US3828783A - Absorbent facing material - Google Patents
Absorbent facing material Download PDFInfo
- Publication number
- US3828783A US3828783A US00363459A US36345973A US3828783A US 3828783 A US3828783 A US 3828783A US 00363459 A US00363459 A US 00363459A US 36345973 A US36345973 A US 36345973A US 3828783 A US3828783 A US 3828783A
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- United States
- Prior art keywords
- absorbent
- facing
- wood pulp
- core
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
- A61F13/15642—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres by depositing continuous layers or pads of fibrous material on single sheets or webs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
-
- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
-
- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
- A61F13/2002—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the use
- A61F13/202—Catamenial tampons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F2013/51002—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres
- A61F2013/51038—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres being a mixture of fibres
- A61F2013/51042—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers with special fibres being a mixture of fibres with hydrophobic and hydrophilic fibres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F2013/53445—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad from several sheets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F2013/53721—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
- A61F2013/53908—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24826—Spot bonds connect components
Definitions
- the cellulosic fibers are substantially only on one surface of the material and the wood pulp substantially only on the opposite surface.
- the binder is distributed in a predetermined pattern with the surface containing the cellulosic fibers having a higher concentration of binder than the surface containing the wood pulp fibers.
- the present invention is directed to a new nonwoven fabric and more particularly to a highly absorbent, stabilized fabric suitable for use as the facing for absorbent products.
- Nonwoven fabrics have gained considerable use as the facing or outer layer of absorvent products such as underpads, diapers, sanitary napkins and the like.
- the facing material is primarily used to contain the absorbent core and in some instances provide other properties in the final product. Such properties may be maintaining a dry surface when the product is in use, improving the wicking characteristics and distribution of the fluid to be absorbed within the product to make more efficient use of the absorbent core, abrasion resistance, and so forth.
- Our new facing material has excellent softness and good wicking and fluid distribution properties. Furthermore our new facing material is very soft, highly absorbent, abrasion resistant, and improves the stability of the entire product in that it has one surface which stabilizes and holds the absorbent core in place during use.
- our new absorbent facing material weighs at least 1 ounce per square yard and comprises to percent of cellulosic, staple length, textile fibers, 60 to 80 percent of fluffed wood pulp and 5 to 25 percent of an adhesive resin binder.
- the facing material has the cellulosic fibers substantially only on one surface of the material and the wood pulp substantially only on the other surface of the material.
- the resin binder is distributed in a pattern over the material with the concentration of resin being greater on the cellulosic fiber surface than it is on the wood pulp surface of the material.
- Our new facing material is manufactured by forming a web of cellulosic textile length fibers and uniformly depositing wood pulp on one side of the textile fiber web to form a fiber-wood pulp laminate.
- the laminate is confined between a pair of moving surfaces and while confined the laminate is. thoroughly wetted with water.
- a resin binder is deposited on the wet laiminate with the resin being applied to the web side of the laminate in a pattern.
- the laminate with the resin thereon is dried to remove the water and cure the binder and product the absorbent facing material.
- the facing material is used in combination with an absorbent core wherein the absorbent core may be fluffed wood pulp or absorbent creped tissue or similar highly absorbent materials.
- the facing material may be used to wrap the entire core or it may be used on one surface of the core with the other surface of the core being covered with a waterproof film such as polyethylene or the like.
- the facing material is applied to the absorbent core with the wood pulp surface in contact with the core so that the cellulosic textile'fiberrich surface is the exposed surface of the final product.
- This configuration produces an absorbentproduct having a smooth, soft surface which isabrasion resistant.
- the facing also aids in uniformly wicking and distributing the fluid beingabsorbed into-thecore. Furthermore this configuration is highly absorbent and the wood pulp surface which has a higher coefficient. of friction than the cellulosic textile fiber surface contacts the absorbent core and stabilizes and holds the core in place .during use.
- FIG. 5 is a schematic flow sheet of apparatus useful in carrying out the method of the present invention.
- the absorbent facing material 10 comprises an upper or top layer 11 of cellulosic, textile, staple length, fibers and a bottom or lower layer 12 of fluffed wood pulp.
- a resin binder 13 is distributed over the textile fiber layer in a pattern so as to form a substantially unbonded hexagon areas 14 in the layer. As is more clearly seen in FIG. 2 the concentration of binder is greater in the textile fiber layer 11 than it is in the remainder of the facing material.
- the cellulosic fibers used may be any of the natural or artificial cellulosic fibers; such as, cotton, rayon, and the like.
- the cellulosic fibers must have a length of at least one-half inch up to 2% inches or more. The minimum fiber length is required in order to carry the laminate through the process for producing the final facing material and to provide strength in the final product.
- the wood pulp may be any of the known wood pulps such as Kraft pulps, sulfite pulp, and the like.
- the wood pulp is ground into a fine, highly absorbent, particulate configuration.
- the binders used to hold the laminate together may be any of the well known polymer resin binders used in bonding nonwoven fabrics; for example, self crosslinking acrylate resins, polyvinyl chloride resins, polyvinyl acetate resins and the like.
- the binder is applied in a predetermined pattern to the surface containing the cellulosic textile fibers.
- the pattern may have a configuration of hexagons as shown, or circles or dots or other configuration as long as there are substantially unbonded fiber areas on the cellulosic textile fiber surface to aid in the wicking and distribution of the fluid to be absorbed.
- the facing should weigh at least 1 ounce per square yard. Lighter weight materials will not produce either the desired absorbency or the desired stabilization of the core.
- FIG. 3 there is shown a sanitary napkin 16 which utilizes the absorbent facing material of the present invention as the cover of the napkin.
- the napkin comprises an absorbent core 17 which may be a multiplicity of plies of crepe tissue, a thick layer of fluffed wood pulp or similar material that is highly absorbent.
- the core is wrapped with the'facing material 18 of the presentinvention with the surface containing the high concentration of: wood pulp'fibers in contact with the core tostabilize and hold the core in place.
- FIG. 4 there is shown a disposable diaper 20 utilizing the facing material of the present invention.
- the diaper comprises an absorbent core 21 which may be either a multiplicity of plies of creped tissue or a fluffed wood pulp core.
- the core is backed with a water repellent or water-proof film 22 such as polyethylene film.
- the opposite surface of the core is covered with the facing material 23 of the present invention.
- the wood pulp surface of the facing material is in contact with the core to stabilize and hold the core in place during use.
- the cellulosic textile fiber surface forms the outer surface of the diaper and is soft, abrasion resistant, and highly absorbent.
- FIGS. 3 and 4 Although sanitary napkins and disposable diapers have been depicted in FIGS. 3 and 4 there are various other absorbent products with which the facing material of the present invention may be used, such as, tampons, underpads, bandages, and the like.
- FIG. there is schematically depicted one form of apparatus for manufacturing the absorbent facing material of the present invention.
- a lap 25 of cellulosic, staple length textile fibers is fed to a standard card machine 26 and a carded fiber web 27 is removed from the card machine by a standard doffing comb 28 and placed on a moving conveyor 29.
- Wood pulp board 30 is passed between counter-rotating toothed rolls 31 and 32 to grind the wood pulp and deposit it through the funnel 33 onto the surface of the card web.
- the laminate of cellulosic fibers and wood pulp is confined between a continuous foraminous belt 34 and a rotatable foraminous drum 35.
- the belt contacts the drum about a portion of it periphery and water is sprayed with suitable nozzles 36 through the foraminous drum into the web and out through the belt to thoroughly wet out the laminate.
- the belt, drum and laminate move at the same linear speed.
- the wetted laminate 37 is passed through a pair of rotating rolls 38 and 39.
- the bottom roll 38 rotates in a reservoir 40 of resin binder.
- the roll has the desired binder pattern engraved on its surface.
- the roll 38 contacts the cellulosic textile fiber surface of the wet laminate and deposits the resin binder in a pattern on the laminate.
- the laminate with the binder thereon is placed on the conveyor 41 and passed through an oven 42 where it is dried and the binder cured.
- the bonded nonwoven facing material 43 is rolled up.
- the facing may be used in combination with various types of absorbent cores to produce the final products previously described.
- the cellulosic textile fiber web may be produced by standard methods such as carding, air laying, wet laying techniques and the like.
- the wood pulp may be produced by any of the known grinding methods such as Bauer mills, hammer mills, and the like which grind the pulp board into finely divided particulate wood pulp material.
- the fiber-pulp laminate is confined between a pair of moving foraminous surfaces and is thoroughly wetted with water. It is critical to the present invention that the pulp-fiber laminate be confined when wetted to produce integrity in the laminate. If the laminate is not confined when wetted it will lose its desired uniformity and will not produce a suitable facing material.
- the wetted laminate is bonded by known techniques such as printing. It is critical to the present invention that the binder be placed on the surface containing the cellulosic fibers. This is important in order to prevent adherence of the wood pulp fibers to the printing roll which would occur if the binder was applied to the wood pulp side of the laminate.
- the laminate with the binder thereon is dried to remove the water, cure the resin binder and bond the fibers and wood pulp together to form the final facing material.
- EXAMPLE Using standard card machines a card web is produced. The web weighs approximately 200 grains per square yard and is made from 1 9/16 inch, 1% denier viscose rayon fibers. Wood pulp board is ground utilizing a Bauer mill and the fully fluffed wood pulp is deposited on the card web. Approximately 700 grains per square yard of fluffed wood pulp is laid on the card web.
- the fiber-pulp laminate is confined between a rotating foraminous drum and a moving foraminous belt and is saturated with water to more than percent by weight pickup of water.
- the wet laminate is passed through the nip formed by a pair of rolls. The roll contacting the textile fiber surface has a pattern of lines engraved in its surface with the lines forming a pattern of hexagons as shown in FIG. 1.
- the binder used is a self cross-linking acrylic resin emulsion and it is printed on the textile fiber-rich surface of the laminate.
- the laminate with the self cross-linking acrylic resin is heated to drive off the water and cross link the resin. Approximately grains per square yard of resin is applied to the laminate.
- the resultant material has a higher concentration of binder on the textile fiber-rich surface than it has on the pulp-rich surface.
- the material is soft, strong and highly absorbent.
- An absorbent facing weighing at least 1 ounce per square yard and suitable for use in covering absorbent cores said facing comprising, 10 to 30 percent cellulosic, staple length textile fibers, 60 to 80 percent fluff wood pulp and 5 to 25 percent resin binder material, said facing having the textile fibers only on one surface thereof with said wood pulp substantially only on the opposite surface, said resin binder being distributed in an intermittent pattern over the surface having the textile fibers, the concentration of binder being greater on the textile fiber surface than the concentration of binder on the wood pulp surface, whereby the facing is soft and highly absorbent, the textile fiber surface has good abrasion resistance and the wood pulp surface aids in stabilizing the absorbent core in use.
- An absorbent product comprising an absorbent core and an absorbent facing contacting at least one surface of said core, said absorbent facing weighing at least 1 ounce per square yard and comprising 10 to 30 percent cellulosic, staple length textile fibers, 60 to 80 percent fluff wood pulp, and from 5 to 25 percent of a resin binder, said facing having the textile fibers only on one surface thereof and said wood pulp substantially said absorbent facing is wrapped about the absorbent core.
Abstract
An absorbent facing material comprising 10 to 30 percent cellulosic, staple length, textile fibers, 60 to 80 percent of fluff wood pulp, and 5 to 25 percent of a resin binder material. The cellulosic fibers are substantially only on one surface of the material and the wood pulp substantially only on the opposite surface. The binder is distributed in a predetermined pattern with the surface containing the cellulosic fibers having a higher concentration of binder than the surface containing the wood pulp fibers.
Description
MMQ
tates atent [191 Kennette et all.
[11] 3,828,783 [451 Aug. 13, 1974 1 ABSORBENT FACING MATERIAL [75] Inventors: John Wilson Kennette, Somerville;
Irving Stanley Ness, Princeton, both of NJ.
[73] Assignee: Johnson & Johnson, New
Brunswick, NJ.
[22] Filed: May 24, 1973 [21] Appl. No.: 363,459
[52] US. Cl 1128/284, 128/290 W, 161/164 [51] int. Cl. A411) 13/02, A61f 13/16 [58] Field of Search.. 128/284, 287, 290 R, 290 W, 128/296;161/116,164,l70,151,l55,169
[56] References Cited UNITED STATES PATENTS 2,295,439 9/1942 Voigtman 128/290 W 2,833,283 /1958 Spahr et a1 128/290 W 3,063,454 1 H1962 Coates et a1. 128/290 W 3,085,309 4/1963 Olson 128/284 3,523,536 8/1970 Ruffo 128/287 3,663,348 5/1972 Liloia ct a1 128/284 Primary ExaminerCharles F. Rosenbaum 5 7] ABSTRACT An absorbent facing material comprising 10 to percent cellulosic, staple length, textile fibers, to percent of fluff wood pulp, and 5 to 25 percent of a resin binder material. The cellulosic fibers are substantially only on one surface of the material and the wood pulp substantially only on the opposite surface. The binder is distributed in a predetermined pattern with the surface containing the cellulosic fibers having a higher concentration of binder than the surface containing the wood pulp fibers.
6 Claims, 5 Drawing Figures Pmmmum 3mm SHEET 2 [1F 2 ABSORIBENT FACING MATERIAL The present invention is directed to a new nonwoven fabric and more particularly to a highly absorbent, stabilized fabric suitable for use as the facing for absorbent products.
Nonwoven fabrics have gained considerable use as the facing or outer layer of absorvent products such as underpads, diapers, sanitary napkins and the like. The facing material is primarily used to contain the absorbent core and in some instances provide other properties in the final product. Such properties may be maintaining a dry surface when the product is in use, improving the wicking characteristics and distribution of the fluid to be absorbed within the product to make more efficient use of the absorbent core, abrasion resistance, and so forth.
We have discovered a new facing material for use on absorbent products. Our new facing material has excellent softness and good wicking and fluid distribution properties. Furthermore our new facing material is very soft, highly absorbent, abrasion resistant, and improves the stability of the entire product in that it has one surface which stabilizes and holds the absorbent core in place during use.
In accordance with the present invention our new absorbent facing material weighs at least 1 ounce per square yard and comprises to percent of cellulosic, staple length, textile fibers, 60 to 80 percent of fluffed wood pulp and 5 to 25 percent of an adhesive resin binder. The facing material has the cellulosic fibers substantially only on one surface of the material and the wood pulp substantially only on the other surface of the material. The resin binder is distributed in a pattern over the material with the concentration of resin being greater on the cellulosic fiber surface than it is on the wood pulp surface of the material.
Our new facing material is manufactured by forming a web of cellulosic textile length fibers and uniformly depositing wood pulp on one side of the textile fiber web to form a fiber-wood pulp laminate. The laminate is confined between a pair of moving surfaces and while confined the laminate is. thoroughly wetted with water. A resin binder is deposited on the wet laiminate with the resin being applied to the web side of the laminate in a pattern. The laminate with the resin thereon is dried to remove the water and cure the binder and product the absorbent facing material.
The facing material is used in combination with an absorbent core wherein the absorbent core may be fluffed wood pulp or absorbent creped tissue or similar highly absorbent materials. The facing material may be used to wrap the entire core or it may be used on one surface of the core with the other surface of the core being covered with a waterproof film such as polyethylene or the like. In use the facing material is applied to the absorbent core with the wood pulp surface in contact with the core so that the cellulosic textile'fiberrich surface is the exposed surface of the final product. This configuration produces an absorbentproduct having a smooth, soft surface which isabrasion resistant. The facing also aids in uniformly wicking and distributing the fluid beingabsorbed into-thecore. Furthermore this configuration is highly absorbent and the wood pulp surface which has a higher coefficient. of friction than the cellulosic textile fiber surface contacts the absorbent core and stabilizes and holds the core in place .during use.
FIG. 5 is a schematic flow sheet of apparatus useful in carrying out the method of the present invention.
Referring to the drawings in FIGS. 1 and 2 there is depicted an absorbent facing material of the present invention. The absorbent facing material 10 comprises an upper or top layer 11 of cellulosic, textile, staple length, fibers and a bottom or lower layer 12 of fluffed wood pulp. A resin binder 13 is distributed over the textile fiber layer in a pattern so as to form a substantially unbonded hexagon areas 14 in the layer. As is more clearly seen in FIG. 2 the concentration of binder is greater in the textile fiber layer 11 than it is in the remainder of the facing material.
The cellulosic fibers used may be any of the natural or artificial cellulosic fibers; such as, cotton, rayon, and the like. The cellulosic fibers must have a length of at least one-half inch up to 2% inches or more. The minimum fiber length is required in order to carry the laminate through the process for producing the final facing material and to provide strength in the final product.
The wood pulp may be any of the known wood pulps such as Kraft pulps, sulfite pulp, and the like. The wood pulp is ground into a fine, highly absorbent, particulate configuration.
The binders used to hold the laminate together may be any of the well known polymer resin binders used in bonding nonwoven fabrics; for example, self crosslinking acrylate resins, polyvinyl chloride resins, polyvinyl acetate resins and the like. The binder is applied in a predetermined pattern to the surface containing the cellulosic textile fibers. The pattern may have a configuration of hexagons as shown, or circles or dots or other configuration as long as there are substantially unbonded fiber areas on the cellulosic textile fiber surface to aid in the wicking and distribution of the fluid to be absorbed.
To produce a facing material having the desired softness, abrasion resistance, and absorbency properties and to also stabilize the absorbent core during use of the final product, the facing should weigh at least 1 ounce per square yard. Lighter weight materials will not produce either the desired absorbency or the desired stabilization of the core.
In FIG. 3'there is shown a sanitary napkin 16 which utilizes the absorbent facing material of the present invention as the cover of the napkin. The napkin comprises an absorbent core 17 which may be a multiplicity of plies of crepe tissue, a thick layer of fluffed wood pulp or similar material that is highly absorbent. The core is wrapped with the'facing material 18 of the presentinvention with the surface containing the high concentration of: wood pulp'fibers in contact with the core tostabilize and hold the core in place.
In FIG. 4 there is shown a disposable diaper 20 utilizing the facing material of the present invention. The diaper comprises an absorbent core 21 which may be either a multiplicity of plies of creped tissue or a fluffed wood pulp core. The core is backed with a water repellent or water-proof film 22 such as polyethylene film. The opposite surface of the core is covered with the facing material 23 of the present invention. The wood pulp surface of the facing material is in contact with the core to stabilize and hold the core in place during use. The cellulosic textile fiber surface forms the outer surface of the diaper and is soft, abrasion resistant, and highly absorbent.
Though sanitary napkins and disposable diapers have been depicted in FIGS. 3 and 4 there are various other absorbent products with which the facing material of the present invention may be used, such as, tampons, underpads, bandages, and the like.
In FIG. there is schematically depicted one form of apparatus for manufacturing the absorbent facing material of the present invention. A lap 25 of cellulosic, staple length textile fibers is fed to a standard card machine 26 and a carded fiber web 27 is removed from the card machine by a standard doffing comb 28 and placed on a moving conveyor 29. Wood pulp board 30 is passed between counter-rotating toothed rolls 31 and 32 to grind the wood pulp and deposit it through the funnel 33 onto the surface of the card web. The laminate of cellulosic fibers and wood pulp is confined between a continuous foraminous belt 34 and a rotatable foraminous drum 35. The belt contacts the drum about a portion of it periphery and water is sprayed with suitable nozzles 36 through the foraminous drum into the web and out through the belt to thoroughly wet out the laminate. The belt, drum and laminate move at the same linear speed. The wetted laminate 37 is passed through a pair of rotating rolls 38 and 39. The bottom roll 38 rotates in a reservoir 40 of resin binder. The roll has the desired binder pattern engraved on its surface. The roll 38 contacts the cellulosic textile fiber surface of the wet laminate and deposits the resin binder in a pattern on the laminate. The laminate with the binder thereon is placed on the conveyor 41 and passed through an oven 42 where it is dried and the binder cured. The bonded nonwoven facing material 43 is rolled up. The facing may be used in combination with various types of absorbent cores to produce the final products previously described.
The cellulosic textile fiber web may be produced by standard methods such as carding, air laying, wet laying techniques and the like. The wood pulp may be produced by any of the known grinding methods such as Bauer mills, hammer mills, and the like which grind the pulp board into finely divided particulate wood pulp material.
The fiber-pulp laminate is confined between a pair of moving foraminous surfaces and is thoroughly wetted with water. It is critical to the present invention that the pulp-fiber laminate be confined when wetted to produce integrity in the laminate. If the laminate is not confined when wetted it will lose its desired uniformity and will not produce a suitable facing material. The wetted laminate is bonded by known techniques such as printing. It is critical to the present invention that the binder be placed on the surface containing the cellulosic fibers. This is important in order to prevent adherence of the wood pulp fibers to the printing roll which would occur if the binder was applied to the wood pulp side of the laminate. The laminate with the binder thereon is dried to remove the water, cure the resin binder and bond the fibers and wood pulp together to form the final facing material.
The following is an illustrative example of the method of the present invention used in producing the absorbent facing material of the present invention.
EXAMPLE Using standard card machines a card web is produced. The web weighs approximately 200 grains per square yard and is made from 1 9/16 inch, 1% denier viscose rayon fibers. Wood pulp board is ground utilizing a Bauer mill and the fully fluffed wood pulp is deposited on the card web. Approximately 700 grains per square yard of fluffed wood pulp is laid on the card web. The fiber-pulp laminate is confined between a rotating foraminous drum and a moving foraminous belt and is saturated with water to more than percent by weight pickup of water. The wet laminate is passed through the nip formed by a pair of rolls. The roll contacting the textile fiber surface has a pattern of lines engraved in its surface with the lines forming a pattern of hexagons as shown in FIG. 1. The binder used is a self cross-linking acrylic resin emulsion and it is printed on the textile fiber-rich surface of the laminate. The laminate with the self cross-linking acrylic resin is heated to drive off the water and cross link the resin. Approximately grains per square yard of resin is applied to the laminate. The resultant material has a higher concentration of binder on the textile fiber-rich surface than it has on the pulp-rich surface. The material is soft, strong and highly absorbent.
The above detailed description has been given for clearness of understanding only. No unnecessary limitations should be understood therefrom as modifications will be obvious to those skilled in the art.
What is claimed is:
1. An absorbent facing weighing at least 1 ounce per square yard and suitable for use in covering absorbent cores said facing comprising, 10 to 30 percent cellulosic, staple length textile fibers, 60 to 80 percent fluff wood pulp and 5 to 25 percent resin binder material, said facing having the textile fibers only on one surface thereof with said wood pulp substantially only on the opposite surface, said resin binder being distributed in an intermittent pattern over the surface having the textile fibers, the concentration of binder being greater on the textile fiber surface than the concentration of binder on the wood pulp surface, whereby the facing is soft and highly absorbent, the textile fiber surface has good abrasion resistance and the wood pulp surface aids in stabilizing the absorbent core in use.
2. An absorbent facing according to claim 1 wherein the cellulosic staple length textile fibers are rayon fibers.
3. An absorbent facing according to claim 1 wherein the resin binder is a self cross-linking acrylic resin.
4. An absorbent product comprising an absorbent core and an absorbent facing contacting at least one surface of said core, said absorbent facing weighing at least 1 ounce per square yard and comprising 10 to 30 percent cellulosic, staple length textile fibers, 60 to 80 percent fluff wood pulp, and from 5 to 25 percent of a resin binder, said facing having the textile fibers only on one surface thereof and said wood pulp substantially said absorbent facing is wrapped about the absorbent core.
6. A disposable diaper according to claim 4 wherein the absorbent facing contacts one surface of said absorbent core and a water repellent film contacts the opposite surface of said absorbent core.
Patent No.
August 13,197?
Dated Inventor) John Wilson Kennette and Irving Stanley'Ness It: is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
[SEAL] In Column 1, line 8, "absorvent" should read absorbent In Column 2, line 23, "to form a substantially" should read to form substantially In Column 2, line 36, "The wood pulp" should read The pulp Signed and Salad this twenty-third Day of March 1976 Attest:
RUTH C. MASON C. MARSHALL DANN Arresting Officer Commissioner of Parents and Trademarks
Claims (5)
- 2. An absorbent facing according to claim 1 wherein the cellulosic staple length textile fibers are rayon fibers.
- 3. An absorbent facing according to claim 1 wherein the resin binder is a self cross-linking acrylic resin.
- 4. An absorbent product comprising an absorbent core and an absorbent facing contacting at least one surface of said core, said absorbent facing weighing at least 1 ounce per square yard and comprising 10 to 30 percent cellulosic, staple length textile fibers, 60 to 80 percent fluff wood pulp, and from 5 to 25 percent of a resin binder, said facing having the textile fibers only on one surface thereof and said wood pulp substantially only on the opposite surface thereof, said facing having the resin binder distributed in an intermittent pattern over the surface containing the textile fibers, the concentration of binder being greater on the textile fiber surface than it is on the wood pulp surface and said facing having the wood pulp surface in contact with the absorbent core.
- 5. A sanitary napkin according to claim 4 wherein said absorbent facing is wrapped about the absorbent core.
- 6. A disposable diaper according to claim 4 wherein the absorbent facing contacts one surface of said absorbent core and a water repellent film contacts the opposite surface of said absorbent core.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00363459A US3828783A (en) | 1973-05-24 | 1973-05-24 | Absorbent facing material |
CA200,840A CA987480A (en) | 1973-05-24 | 1974-05-23 | Absorbent facing material and method for manufacturing the same |
JP49058046A JPS599177B2 (en) | 1973-05-24 | 1974-05-24 | How do you know what to do with your child? |
US05/583,932 US4035217A (en) | 1973-05-24 | 1975-06-05 | Method of manufacturing absorbent facing materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00363459A US3828783A (en) | 1973-05-24 | 1973-05-24 | Absorbent facing material |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US43127174A Division | 1973-05-24 | 1974-01-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3828783A true US3828783A (en) | 1974-08-13 |
Family
ID=23430293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00363459A Expired - Lifetime US3828783A (en) | 1973-05-24 | 1973-05-24 | Absorbent facing material |
Country Status (3)
Country | Link |
---|---|
US (1) | US3828783A (en) |
JP (1) | JPS599177B2 (en) |
CA (1) | CA987480A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3903890A (en) * | 1974-08-20 | 1975-09-09 | Johnson & Johnson | Disposable diaper of simple construction |
US3939836A (en) * | 1974-02-07 | 1976-02-24 | Johnson & Johnson | Water dispersible nonwoven fabric |
US3965904A (en) * | 1975-03-18 | 1976-06-29 | Johnson & Johnson | Disposable diaper |
US3976075A (en) * | 1975-02-24 | 1976-08-24 | Personal Products Company | Tampon blank with reduced sloughing properties |
FR2313488A1 (en) * | 1975-06-06 | 1976-12-31 | Schickedanz Ver Papierwerk | Absorbent material contg. cellulose fibres and thermoplastic binder - for disposable hygienic articles with high retention of aq. physiological fluids (NL081276) |
US4050463A (en) * | 1976-08-20 | 1977-09-27 | Colgate-Palmolive Company | Diapers |
US4085754A (en) * | 1976-03-03 | 1978-04-25 | Johnson & Johnson | Disposable diaper inner facing |
USRE29789E (en) * | 1973-05-14 | 1978-10-03 | Scott Paper Company | Absorbent articles for disposable diaper |
US4194507A (en) * | 1976-03-03 | 1980-03-25 | Johnson & Johnson | Disposable diaper inner facing |
US4219024A (en) * | 1978-09-21 | 1980-08-26 | Colgate-Palmolive Company | Absorbent article |
US4417893A (en) * | 1977-06-17 | 1983-11-29 | Kao Soap Co., Ltd. | Sanitary napkin |
US5431643A (en) * | 1992-04-02 | 1995-07-11 | The Procter & Gamble Company | Absorbent article having a nonwoven topsheet with fluid impervious areas |
US5665082A (en) * | 1995-11-01 | 1997-09-09 | Johnson & Johnson Inc. | Highly absorbent transfer layer structure |
US5989478A (en) * | 1994-06-30 | 1999-11-23 | The Procter & Gamble Company | Method of manufacturing fluid transport webs exhibiting surface energy gradients |
CN102795505A (en) * | 2012-08-11 | 2012-11-28 | 河北杰力伟机械设备有限公司 | Cotton comforter batt mesh spreading and cutting device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS566098Y2 (en) * | 1975-10-30 | 1981-02-10 | ||
JPS566097Y2 (en) * | 1975-10-30 | 1981-02-10 | ||
JPS558527U (en) * | 1978-06-30 | 1980-01-19 |
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US2295439A (en) * | 1939-02-08 | 1942-09-08 | Int Cellucotton Products | Sanitary napkin |
US2833283A (en) * | 1954-12-28 | 1958-05-06 | Chicopee Mfg Corp | Nonwoven fabric and absorbent products |
US3063454A (en) * | 1959-02-26 | 1962-11-13 | Cleanese Corp Of America | Non-woven products |
US3085309A (en) * | 1960-03-09 | 1963-04-16 | Kendall & Co | Throwaway diaper |
US3523536A (en) * | 1966-02-26 | 1970-08-11 | Johnson & Johnson | Absorbent fibrous products |
US3663348A (en) * | 1968-05-16 | 1972-05-16 | Johnson & Johnson | A lofty and soft nonwoven, through bonded fabric |
-
1973
- 1973-05-24 US US00363459A patent/US3828783A/en not_active Expired - Lifetime
-
1974
- 1974-05-23 CA CA200,840A patent/CA987480A/en not_active Expired
- 1974-05-24 JP JP49058046A patent/JPS599177B2/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2295439A (en) * | 1939-02-08 | 1942-09-08 | Int Cellucotton Products | Sanitary napkin |
US2833283A (en) * | 1954-12-28 | 1958-05-06 | Chicopee Mfg Corp | Nonwoven fabric and absorbent products |
US3063454A (en) * | 1959-02-26 | 1962-11-13 | Cleanese Corp Of America | Non-woven products |
US3085309A (en) * | 1960-03-09 | 1963-04-16 | Kendall & Co | Throwaway diaper |
US3523536A (en) * | 1966-02-26 | 1970-08-11 | Johnson & Johnson | Absorbent fibrous products |
US3663348A (en) * | 1968-05-16 | 1972-05-16 | Johnson & Johnson | A lofty and soft nonwoven, through bonded fabric |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE29789E (en) * | 1973-05-14 | 1978-10-03 | Scott Paper Company | Absorbent articles for disposable diaper |
US3939836A (en) * | 1974-02-07 | 1976-02-24 | Johnson & Johnson | Water dispersible nonwoven fabric |
US3903890A (en) * | 1974-08-20 | 1975-09-09 | Johnson & Johnson | Disposable diaper of simple construction |
US3976075A (en) * | 1975-02-24 | 1976-08-24 | Personal Products Company | Tampon blank with reduced sloughing properties |
US3965904A (en) * | 1975-03-18 | 1976-06-29 | Johnson & Johnson | Disposable diaper |
FR2313488A1 (en) * | 1975-06-06 | 1976-12-31 | Schickedanz Ver Papierwerk | Absorbent material contg. cellulose fibres and thermoplastic binder - for disposable hygienic articles with high retention of aq. physiological fluids (NL081276) |
US4194507A (en) * | 1976-03-03 | 1980-03-25 | Johnson & Johnson | Disposable diaper inner facing |
US4085754A (en) * | 1976-03-03 | 1978-04-25 | Johnson & Johnson | Disposable diaper inner facing |
US4050463A (en) * | 1976-08-20 | 1977-09-27 | Colgate-Palmolive Company | Diapers |
US4417893A (en) * | 1977-06-17 | 1983-11-29 | Kao Soap Co., Ltd. | Sanitary napkin |
US4219024A (en) * | 1978-09-21 | 1980-08-26 | Colgate-Palmolive Company | Absorbent article |
US5431643A (en) * | 1992-04-02 | 1995-07-11 | The Procter & Gamble Company | Absorbent article having a nonwoven topsheet with fluid impervious areas |
US5989478A (en) * | 1994-06-30 | 1999-11-23 | The Procter & Gamble Company | Method of manufacturing fluid transport webs exhibiting surface energy gradients |
US6025049A (en) * | 1994-06-30 | 2000-02-15 | The Procter & Gamble Company | Fluid transport webs exhibiting surface energy gradients |
US6180052B1 (en) | 1994-06-30 | 2001-01-30 | The Procter & Gamble Company | Fluid transport webs exhibiting surface energy gradients |
US5665082A (en) * | 1995-11-01 | 1997-09-09 | Johnson & Johnson Inc. | Highly absorbent transfer layer structure |
CN102795505A (en) * | 2012-08-11 | 2012-11-28 | 河北杰力伟机械设备有限公司 | Cotton comforter batt mesh spreading and cutting device |
Also Published As
Publication number | Publication date |
---|---|
CA987480A (en) | 1976-04-20 |
JPS599177B2 (en) | 1984-02-29 |
JPS5020589A (en) | 1975-03-04 |
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