WO2011118725A1 - Body fluid treatment article and method for manufacturing same - Google Patents
Body fluid treatment article and method for manufacturing same Download PDFInfo
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- WO2011118725A1 WO2011118725A1 PCT/JP2011/057232 JP2011057232W WO2011118725A1 WO 2011118725 A1 WO2011118725 A1 WO 2011118725A1 JP 2011057232 W JP2011057232 W JP 2011057232W WO 2011118725 A1 WO2011118725 A1 WO 2011118725A1
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- sheet
- core material
- fluid treatment
- body fluid
- compressed
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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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
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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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
- A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
- A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
Definitions
- the present invention relates to a body fluid treatment product such as a sanitary napkin, a urine absorption pad, and a panty liner, and more particularly to a body fluid treatment product in which a plurality of recesses are formed in the thickness direction from the surface thereof, and a manufacturing method thereof.
- the body fluid treatment article includes a top sheet, a back sheet, an absorbent body sandwiched between the front and back sheets, and a plurality of grooves formed by compression from the top sheet to the absorbent body. And have.
- a hot melt adhesive is applied between the top sheet and the absorber.
- a groove is formed by an embossing roll. That is, a plurality of grooves are formed by passing a body fluid treatment article between an embossing roll having a convex portion and a backup roll facing the embossing roll.
- the hot melt adhesive is melted, and the top sheet and the absorber are joined.
- the adhesion between them can be improved, and the liquid on the top sheet can be transferred to the absorber side more efficiently.
- the core of the absorber is interposed between the bottom of the groove and the back sheet without the plurality of grooves reaching the back sheet.
- the core material since the core material can move in the vertical direction and the horizontal direction, the core material may move in the worn state, and the absorbent body may be twisted.
- This invention makes it a subject to provide the bodily fluid treatment article which can suppress the shaking in a wearing condition, and its manufacturing method.
- the present invention has first and second inventions.
- 1st invention has a vertical direction and a horizontal direction, The body side and its opposite side, The liquid-permeable inner surface sheet located in the said body side, The outer surface sheet located in the said opposite side, and these sheets It is related with improvement of the bodily fluid treatment goods which include a liquid-absorbing core material located in between and in which a plurality of compressed grooves are formed in the inner surface sheet.
- the liquid-absorbent core material is not entangled, welded or fused to each other by a special means, and is not covered with another sheet or the like.
- the 1st invention is the said bodily fluid treatment article,
- the said inner surface sheet and the said outer surface sheet are formed with a fiber nonwoven fabric, and the said pressing groove is formed over the whole area of the said vertical direction and the said horizontal direction of the said inner surface sheet.
- a first portion formed from the inner surface sheet toward the outer surface sheet, and a second portion formed so as to be continuous with the first portion from the first portion toward the outer sheet. In the second portion, at least a part of the fibers of the inner sheet and the fibers of the outer sheet are welded to each other.
- the inner sheet and the outer sheet are formed of a fiber nonwoven fabric containing a thermoplastic synthetic resin.
- a plurality of the second portions are intermittently arranged in at least one of the vertical direction and the horizontal direction in the compressed groove.
- the compressed groove has a virtual vertical center line that bisects the horizontal length dimension and a virtual horizontal center line that bisects the vertical length direction. Tilt.
- the compressed groove further has a recess that overlaps at least a part of the first portion.
- the core material has a mass per unit area of 70 to 350 g / m 2 .
- the compressed groove is 10 to 30% of the area of the inner sheet.
- the inner sheet includes short fibers.
- a plurality of pressings on a laminated web including first and second webs formed by a fiber nonwoven fabric containing a thermoplastic synthetic resin, and a liquid-absorbent core material disposed between the webs. It is related to the improvement of the manufacturing method to form the groove.
- the first and second webs and the core material are formed by a step of laminating the core material and the second web on the first web and a groove forming unit.
- the step of compressing the laminated web and forming the compressed groove, the step of joining the first and second webs together around the core material by the sealing means, and the cutting means, Cutting the first and second webs around the seal portion, and the groove forming means includes an embossing roll formed with a first convex portion and a second convex portion protruding from the first convex portion.
- a backup roll having a smooth surface opposite thereto, the laminated web being pressurized and heated by the embossing roll and the backup roll, and the second convex part At least a portion of the corresponding fibers of the first and second webs in position is characterized in that it is thermally welded.
- the liquid-absorbent core material is not entangled, welded or fused to each other by a special means before the step of forming the compressed groove by the groove forming means, and other sheets, etc. It is not covered with. Furthermore, the core material is not subjected to special treatment such as pressing before the step of forming the compressed groove by the groove forming means.
- the top view of the panty liner which is an example of the bodily fluid treatment goods of 1st Embodiment.
- region shown by II of FIG. FIG. 2B is a schematic cross-sectional view taken along the line IIB-IIB in FIG.
- C The expansion outline figure of the field shown by IIC of Drawing 2 (b). Explanatory drawing for demonstrating the manufacturing method of a bodily fluid treatment article. Embossing roll pattern diagram.
- region shown by V of FIG. FIG. 5B is a cross-sectional view taken along the line VB-VB in FIG.
- FIG. 1 is a plan view of the panty liner 1
- FIG. 2A is an enlarged view of a region indicated by II in FIG. 1, and shows an outline thereof
- FIG. 2B is a diagram of FIG.
- FIG. 2C is a cross-sectional view taken along the line IIB-IIB
- FIG. 2C is an enlarged view of the region indicated by IIC in FIG.
- the pantiliner 1 includes a longitudinal direction Y and a transverse direction X, a virtual longitudinal center line PP that bisects the length dimension in the transverse direction X, and a virtual transverse center that bisects the longitudinal dimension in the longitudinal direction Y. It has a line QQ, and is substantially symmetrical with respect to the virtual vertical center line PP and the virtual horizontal center line QQ.
- the panty liner 1 includes an inner sheet 2 positioned on the wearer's body side, an outer sheet 3 positioned on the opposite side of the clothing, and a liquid-absorbent core positioned between the inner and outer sheets 2 and 3.
- a material 4 and a leakage prevention sheet 5 covering the outer sheet 3 are included.
- the inner surface sheet 2, the outer surface sheet 3, and the leakage prevention sheet 5 have substantially the same shape and size, and the core member 4 is slightly smaller than them.
- a hot melt adhesive (not shown) is appropriately patterned, for example, stripes. It is applied in a pattern such as a grid, parallel lines, and dots. In the case of stripes, lattices, and parallel lines, pattern elements such as zigzag and spiral may be used.
- the inner sheet 2 is a fiber nonwoven fabric that has liquid permeability and includes a thermoplastic synthetic resin, and an air-through fiber nonwoven fabric, a point bond fiber nonwoven fabric, a spun bond fiber nonwoven fabric, or the like can be used.
- a thermoplastic synthetic resin polyethylene, polypropylene, a composite thereof, polyethylene terephthalate (PET), or the like can be used.
- PET polyethylene terephthalate
- the inner sheet 2 has a mass per unit area of about 15 to 60 g / m 2 , preferably about 18 to 45 g / m 2 , and a thickness of about 0.15 to 0.60 mm.
- the outer surface sheet 3 is a fiber nonwoven fabric containing a thermoplastic synthetic resin, and can use a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric, an air-through fiber nonwoven fabric, a point bond fiber nonwoven fabric, a spunbond fiber nonwoven fabric, and the like.
- the mass per unit area can be about 15-60 g / m 2 , preferably about 18-45 g / m 2 .
- the thermoplastic synthetic resin for example, polypropylene can be used, but preferably the same kind as the synthetic resin used for the inner sheet 2.
- the outer sheet 3 may be liquid permeable or liquid impermeable.
- the core material 4 uses fluff pulp having a mass per unit area of about 70 to 350 g / m 2 , preferably about 80 to 200 g / m 2 , and in this embodiment about 150 g / m 2 .
- the core material 4 it is desirable to use pulp fibers having an average fiber length of about 0.5 to 3.0 mm, and synthetic pulp fibers can be used in addition to natural pulp fibers.
- absorbent materials such as superabsorbent polymer particles can be mixed with these pulps.
- an appropriate amount of a thermoplastic synthetic fiber (staple fiber), for example, 5 to 25% by mass can also be used for shape retention, promotion of capillary action, and the like.
- the average fiber length of the thermoplastic synthetic fiber is preferably longer than the average fiber length of the pulp fiber and about 50 mm or less.
- the core material 4 as described above is laminated without being entangled, welded, or fused by special means, and is not covered with other sheets or the like. .
- a non-breathable polyethylene film having a mass per unit area of about 21 g / m 2 is used as the leakage preventing sheet 5.
- This leakage prevention sheet 5 is for preventing leakage of bodily fluid absorbed by the core material 4, for example, a moisture-permeable plastic film having a mass per unit area of about 30 to 60 g / m 2 or a unit area.
- a spunbond / meltblown / spunbond (SMS) non-woven fabric having a weight per unit of about 25 to 50 g / m 2 can also be used.
- a seal portion 6 is formed along the outer periphery of the inner surface sheet 2, and the inner surface sheet 2, the outer surface sheet 3, and the leakage prevention sheet 5 are joined to each other.
- the seal portion 6 is formed by thermally welding the inner surface sheet 2, the outer surface sheet 3, and the leakage prevention sheet 5, and the bonding strength thereof by a hot melt adhesive (not shown) positioned between the sheets. Has been strengthened.
- the inner sheet 2 is formed with a plurality of compressed grooves 7 toward the outer sheet 3.
- the compressed groove 7 extends so as to intersect the vertical direction Y and the horizontal direction X, respectively, and forms a lattice pattern.
- the compressed groove 7 includes a first portion 8 formed from the inner surface sheet 2 toward the core member 4 and a lower portion 8 a of the first portion 8 to the outer surface sheet 3.
- the bottomed second portion 9 is formed so that the distance between the side surfaces gradually decreases toward the bottom.
- the length dimension t1 in the thickness direction of the portion where the first and second portions 8 and 9 are not formed is about 1.4 to 1.6 mm, from the lower portion 8a of the first portion 8 to the outer sheet 3.
- the depth dimension t2 of the second portion 9 is about 0.55 to 0.70 mm
- the length dimension from the bottom surface 9a of the second portion 9 to the outer sheet 3 ie, the depth dimension t3 is about 0. 0.09 to 0.15 mm.
- the dimension t3 is about 1/10 of the dimension t1.
- a protruding portion 9b is formed in the length and width direction of the compressed groove 7.
- the raised portion 9 b has a lower compression density such as fluff pulp fiber than the bottom portion 9 a, and can suppress body fluid from flowing too much along the compressed groove 7.
- FIG. 2C at the bottom 9a of the second portion 9, at least a part of the fibers forming the inner surface sheet 2 and the fibers forming the outer surface sheet 3 are in contact with each other, and these are welded.
- a welded portion W is formed.
- the inner and outer surface sheets 2 and 3 are joined by the welded portion W, so that the movement of the core material 4 is hindered, and the core material becomes the outer surface sheet when the panty liner 1 is worn. 3 can be prevented from moving and twisting. Since the dimension t3 is zero at the portion where the inner and outer surface sheets 2 and 3 are welded to each other, the above-described value is an average value of the dimensions of the welded portion and the non-welded portion. Further, when the core material 4 includes thermoplastic synthetic fibers, these fibers are welded to each other to form a mesh, and thus the movement of the core material 4 such as fluff pulp is further regulated.
- the core material 4 is compressed and the density is higher than the periphery where the compressed groove 7 is not formed. Therefore, the bodily fluid excreted by the inner surface sheet 2 can easily flow into the compressed groove 7 having a high density of the core material 4, and can quickly transfer the bodily fluid to the bottom surface side of the core material 4. Further, in the portion where the second portion 9 is formed, the core material 4 is pushed away to the periphery thereof, and the density of the core material 4 is further increased around the second portion 9. Therefore, the body fluid is quickly absorbed into the core material 4. That is, the body fluid of the inner surface sheet 2 flows in a concentrated manner in the compressed groove 7 and diffuses around the second portion 9. Therefore, the body fluid is promptly moved away from the body, and is held at the distance.
- the body fluid can be absorbed also at the bottom surface 9a of the second portion 9, and further the body fluid can be diffused to the core material in the surrounding area, so that the body fluid is prevented from staying in the second portion 9. can do.
- the core material 4 includes a hydrophobic fiber
- the capillary action is promoted, and the body fluid can be diffused along the fiber without blocking the body fluid flow at the bottom surface 9a.
- diffusion of body fluid can be further promoted.
- the compressed grooves 7 formed by the first and second portions 8 and 9 are formed in a lattice pattern so as to intersect the virtual vertical center line PP and the virtual horizontal center line QQ, respectively. Yes. That is, it is not parallel to the virtual vertical center line PP and the virtual horizontal center line QQ.
- both sides in the lateral direction X are pressed inward by the buttocks so that if the compressed groove 7 is formed parallel to the virtual vertical center line PP, the panty liner 1 It is easy to bend along the compressed groove 7 and a gap may be formed between the skin of the wearer.
- the wearer can be in close contact with the wearer by making it not parallel to the virtual vertical center line PP and the virtual horizontal center line QQ, and the wear feeling can be improved. Can do.
- the compressed groove 7 is preferably formed in substantially the entire area in the longitudinal direction Y and the lateral direction X of the inner sheet 2 and is approximately 10 to 30% of the area of the inner sheet 2. If it is smaller than about 10%, the core material 14 is not sufficiently fixed, and if it is larger than about 30%, the rigidity may increase and the product may become hard.
- the second portion 9 is preferably about 10 to 70% of the area of the compressed groove 7. When it is smaller than about 10%, the adhesive strength of the inner and outer surface sheets 2 and 3 is insufficient, and when it is larger than about 70%, the inner and outer surface sheets 2 and 3 are easily broken.
- the second portion 9 is formed intermittently in the compressed groove 7. By forming intermittently in this way, the inner and outer surface sheets 2 and 3 can be prevented from breaking.
- a plurality of second portions 9 are formed side by side in the lateral direction X in the compressed groove 7, or a plurality of second portions 9 are formed side by side in the vertical direction Y, so that the inner and outer surface sheets 2 and 3 are partly strongly joined. The sheet 2 and 3 can be further prevented from being broken.
- temporary attachment means for temporarily attaching the panty liner 1 to the wearer's underwear or the like may be formed on the clothing side of the leakage prevention sheet 5, and this may be covered with a covering sheet.
- a hot melt adhesive or the like can be used, and a plastic film or the like can be used as the covering sheet.
- FIG. 3 illustrates an outline of the manufacturing apparatus 10 for the panty liner 1 as described above.
- the panty liner 1 can be manufactured through the first to fifth steps.
- the core material 14 forming the core material 4 of the panty liner 1 is laminated on the inner surface web 12 forming the inner sheet 2 of the panty liner 1 at a constant interval in the machine direction MD, and the machine is driven by the conveying roller 16.
- the outer web 13 forming the outer sheet 3 of the panty liner 1 conveyed in the direction MD is laminated.
- the core material 14 is laminated by a lamination means (not shown) without being entangled, welded or fused to each other by a special means, and is not covered with another sheet or the like. .
- a hot melt adhesive (not shown) is applied between the inner surface web 12, the core material 14, and the outer surface web 13.
- the compressed groove 7 is formed by the groove forming means 17 in the laminate of the inner and outer webs 12 and 13 and the core material 14.
- the groove forming means 17 includes an embossing roll 20 and a backup roll 21 that faces the embossing roll 20 and has a smooth surface.
- the embossing roll 20 and the backup roll 21 are heated to about 80 to 140 ° C., preferably about 90 to 130 ° C. with a heater (not shown). In this embodiment, it is heated to about 115-120 ° C. Between the embossing roll 20 and the backup roll 21, a laminated body of the inner and outer surface webs 12 and 13 in which the core member 14 is sandwiched is passed.
- the pressure is a pressure value for one roll shaft having a width of 175 mm.
- FIG. 4 is a diagram illustrating the pattern of the embossing roll 20
- FIG. 5A is an enlarged view of a region indicated by V of the embossing roll 20 in FIG. 4, and FIG. It is the VB-VB sectional view taken on the line (a).
- a plurality of ridges 40 are formed on the surface 20 a of the embossing roll 20.
- a plurality of the ridges 40 are formed on the entire surface 20a of the embossing roll 20 so as to be spaced apart from each other in the machine direction MD and the intersecting direction CD intersecting therewith, and form a lattice pattern as a whole.
- the protrusion 40 has a first protrusion 18 that protrudes from the surface 20 a of the embossing roll 20 and a second protrusion 19 that protrudes further from the first protrusion 18.
- the first convex portion 18 has a rectangular shape with a side of about 1.0 mm
- the second convex portion 19 has a rectangular shape with a side of about 0.5 mm.
- the first convex portion 18 and the second convex portion 19 are formed so that their centers coincide with each other, and are continuous by the inclined surface 22.
- the laminated body of the inner and outer surface webs 12 and 13 and the core member 14 has first and second portions 8 and 18 corresponding to the first and second convex portions 18 and 19. 9 is formed.
- the first convex portion 18 and the second convex portion 19 are formed on the entire embossing roll 20, but the inner and outer surface webs 12 and 13 conveyed between the embossing roll 20 and the backup roll 21 have a core material. 14 is sandwiched, and the portion where the core material 14 is located is thick, so only the portion where the core material 14 is located is heated and pressurized. In the 1st convex part 18, the inner surface web 12 is heat-melted, it welds with the adjacent core material 14, and the hot-melt-adhesive agent in between is also fuse
- the core material 14 Since the area of the second convex portion 19 is small and the inclined surface 22 is formed between the second convex portion 19 and the inner surface web 12 and the outer surface web, the core material 14 is pushed away to the periphery. 13 contact, and these are heated and pressurized. In the second convex portion 19, not all of the core material 14 is pushed away, but a gap is formed between the core materials 14 by pushing away at least a part thereof, and the inner surface web 12 and the outer surface web 13 are formed in the gap. Can be made contactable.
- the core member 14 has a mass per unit area of about 80 to 200 g / m 2 and is relatively sparse, so it can be easily pushed away by the second convex portion 19.
- the mass per unit area of the core material 14 is smaller than about 80 g / m 2 , it is difficult to be uniform during mass production, and when it is larger than about 200 g / m 2 , This is because it becomes difficult to push away the core material 14.
- the leakage prevention web 15 forming the leakage prevention sheet 5 is conveyed by the conveyance roll 16 and joined to the outer surface web 13.
- the leakage prevention web 15 is supplied to the surface of the outer surface web 13 opposite to the core 14 lamination surface.
- a hot melt adhesive (not shown) is applied to the leakage preventing web 15 so that the leakage preventing web 15 can be joined to the outer surface web 13.
- the inner web 12, the outer web 13 and the leakage prevention web 15 are joined to each other by the sealing means 23 to form the seal portion 6 of the panty liner 1.
- the seal means 23 includes a seal roll 25 having a protrusion 24 and a backup roll 26 facing the seal roll 25. Both rolls 25 and 26 are heated to about 80 to 140 ° C. by a heater (not shown).
- the protrusions 24 are formed so as to correspond to the periphery of the core member 14, and the inner surface web 12, the outer surface web 13, and the leakage prevention web 15 are heated and pressed together to form the seal portion 6.
- the laminated web of the inner surface web 12, the core material 14, the outer surface web 13, and the leakage preventing web 15 is cut around the seal portion 6 by the cutting means 27.
- the cutting means 27 has a cutter roll 29 in which a blade 28 is formed and a backup roll 30 opposite to the cutter roll 29, and by cutting the laminated web between the rolls 29, 30, the cutting web 27 is cut.
- the panty liner 1 shown in FIG. 1 can be obtained.
- the core material 14 is not covered with a covering sheet such as tissue paper. Therefore, compared with the case where it coat
- a covering sheet such as tissue paper. Therefore, compared with the case where it coat
- the laminated web of the inner surface web 12, the outer surface web 13, and the core material 14 is compressed in the thickness direction by the groove forming means 17 and further compressed by the sealing means 23, thereby forming the compressed groove 7.
- the dimension in the thickness direction is reduced not only in the part but also in the whole, and the density is increased.
- the dimension in the thickness direction of the laminated web before compression was about 12.0 to 16.0 mm, while that after compression was about 1.4 to 1.6 mm. .
- the density of the core material around the compressed groove 7 can be about 0.08 to 0.30 g / cm 3 , preferably about 0.10 to 0.25 g / cm 3 .
- the core material 14 is compressed in the thickness direction by the groove forming means 17 and the sealing means 23 and its density is increased, absorption of body fluid can be promoted.
- the density becomes higher in the compressed groove 7 it is possible to quickly absorb body fluid in the compressed groove 7.
- the hot melt adhesive Since a hot melt adhesive is applied between the inner surface web 12, the core material 14, and the outer surface web 13, the hot melt adhesive is melted by the heated groove forming means 17, so Can flow into. As described above, the hot melt adhesive can strengthen the bonding between the inner surface web 12 and the core material 14 and the bonding between the outer surface web 13 and the core material 14. Therefore, the formed panty liner 1 can make the core 14 difficult to move with respect to the inner and outer surface sheets 2 and 3, and can be prevented from being twisted.
- the inner surface web 12 is a fiber nonwoven fabric such as an air-through nonwoven fabric, a point bond nonwoven fabric, or a spunbond nonwoven fabric, and includes short fibers having an average fiber length of about 20 to 60 mm. This is because when the inner surface web 12 is pressed by the groove forming means 17, the short fibers are easily released from other fibers and come into contact with the outer surface web 13, and are easily heat-welded with the fibers of the outer surface web 13.
- the formation of the compressed groove 7 and the compression of the entire product can be performed simultaneously. That is, since it is not necessary to compress the core material 14 in advance before forming the compressed groove 7, the process can be simplified accordingly. Moreover, since the core material 14 is not squeezed beforehand before forming the pressing groove 7, when forming the pressing groove 7, the core material 14 is easy to move, and these core materials 14 are made into the 2nd convex part 19. Can easily be pushed away. In addition, before the cutting in the fifth step, it is also possible to apply a temporary fixing adhesive to the leakage preventing web 15 and laminate the release web.
- FIG. 6 illustrates another form of the compressed groove 7 formed in the panty liner 1.
- a floral recess 31 may be formed at the intersection of the compressed grooves 7.
- the length dimension of the concave portion 31 in the thickness direction is substantially the same as that of the first portion 8.
- the recess 31 it is possible to give visual pleasure to the wearer.
- the recess 31 the total area of the compressed groove 7 can be increased.
- the recess 31 on the extension line of the compressed groove 7, the panty liner 1 can be prevented from being bent along the compressed groove 7.
- the recessed part 31 may be formed so that it may overlap with the pressing groove 7, and there may exist what remove
- FIG. 7 illustrates another form of the compressed groove 7 formed in the panty liner 1.
- the compressed groove 7 may be wave-shaped extending in the longitudinal direction Y. Even in this case, the first portion and the second portion are formed. Further, by making it wavy, the compressed groove 7 can be prevented from substantially overlapping the virtual vertical center line PP and the virtual horizontal center line QQ, and the panty liner 1 along these center lines. Can be prevented from bending.
- the concave portion 31 can also be formed on the wavy linear groove 7 described above.
- the pressing groove 7 of this invention can also make it the area larger than another area
- FIG. By increasing the area of the compressed groove 7 at the central portion, the rigidity of the central portion that is most likely to be swelled can be improved and kinking can be prevented.
- rigidity can also be changed partially.
- first portion 8, the second portion 9 and the recess 31 of the compressed groove 7 can be changed as appropriate, and are not limited to these embodiments.
- various known materials that are normally used in this type of field can be used without limitation for each component member constituting the panty liner 1. .
- the terms “first” and “second” are used merely to distinguish similar elements, positions, and the like.
Abstract
Description
第1の発明は、縦方向および横方向を有し、身体側およびその反対側と、前記身体側に位置する透液性の内面シートと、前記反対側に位置する外面シートと、これらシートの間に位置する吸液性の芯材とを含み、前記内面シートには複数の圧搾条溝が形成される体液処理用品の改良に関わる。
前記吸液性の芯材は、特別な手段により、互いに交絡、溶着または融着等されることがなく、また、他のシート等で覆われることがないものである。 The present invention has first and second inventions.
1st invention has a vertical direction and a horizontal direction, The body side and its opposite side, The liquid-permeable inner surface sheet located in the said body side, The outer surface sheet located in the said opposite side, and these sheets It is related with improvement of the bodily fluid treatment goods which include a liquid-absorbing core material located in between and in which a plurality of compressed grooves are formed in the inner surface sheet.
The liquid-absorbent core material is not entangled, welded or fused to each other by a special means, and is not covered with another sheet or the like.
前記吸液性の芯材は、溝形成手段によって圧搾条溝を形成する工程の前においては、特別な手段により、互いに交絡、溶着または融着等されることがなく、また、他のシート等で覆われることがないものである。さらに、芯材は、前記溝形成手段によって圧搾条溝を形成する工程の前に、プレス等の特別な処理がされないものである。 According to a second aspect of the present invention, in the manufacturing method, the first and second webs and the core material are formed by a step of laminating the core material and the second web on the first web and a groove forming unit. The step of compressing the laminated web and forming the compressed groove, the step of joining the first and second webs together around the core material by the sealing means, and the cutting means, Cutting the first and second webs around the seal portion, and the groove forming means includes an embossing roll formed with a first convex portion and a second convex portion protruding from the first convex portion. And a backup roll having a smooth surface opposite thereto, the laminated web being pressurized and heated by the embossing roll and the backup roll, and the second convex part At least a portion of the corresponding fibers of the first and second webs in position is characterized in that it is thermally welded.
The liquid-absorbent core material is not entangled, welded or fused to each other by a special means before the step of forming the compressed groove by the groove forming means, and other sheets, etc. It is not covered with. Furthermore, the core material is not subjected to special treatment such as pressing before the step of forming the compressed groove by the groove forming means.
また、第2部分9が形成された部分では、芯材4がその周囲に押し退けられるようにされて、第2部分9の周囲では、芯材4の密度がさらに高くなっている。したがって、体液は、芯材4へと速やかに吸収される。すなわち、内面シート2の体液は、圧搾条溝7に集中して流れるとともに、第2部分9ではその周囲に拡散するようになる。したがって、速やかに身体から体液を遠ざけ、その遠ざけられたところで保持される。 In the portion where the
Further, in the portion where the
第2部分9は、圧搾条溝7において間欠的に形成されることとしている。このように間欠的に形成することによって、内外面シート2,3の破断を防止することができる。さらに、第2部分9が圧搾条溝7において、横方向Xに複数並んで形成され、または、縦方向Yに複数並んで形成されることによって、内外面シート2,3が部分的に強く接合されるのを防止することができ、より一層、これらシート2,3の破断を防止することができる。 The
The
2 内面シート
3 外面シート
4 芯材
6 シール部
7 圧搾条溝
8 第1部分
9 第2部分
12 内面ウェブ(第1ウェブ)
13 外面ウェブ(第2ウェブ)
14 芯材
17 溝形成手段
18 第1凸部
19 第2凸部
20 エンボスロール
21 バックアップロール
23 シール手段
27 切断手段
X 横方向
Y 縦方向 1 Pantilina (Body fluid treatment product)
2
13 External web (second web)
14
Claims (9)
- 縦方向および横方向を有し、身体側およびその反対側と、前記身体側に位置する透液性の内面シートと、前記反対側に位置する外面シートと、これらシートの間に位置する吸液性の芯材とを含み、前記内面シートには複数の圧搾条溝が形成される体液処理用品において、
前記内面シートおよび前記外面シートは、繊維不織布によって形成され、
前記圧搾条溝は、前記内面シートの前記縦方向および前記横方向の全域に亘って形成されるとともに、前記内面シートから前記外面シートに向かって形成された第1部分と、前記第1部分から前記外面シートに向かって前記第1部分に連なるように形成された第2部分とを含み、
前記第2部分では、前記内面シートの繊維と前記外面シートの繊維との少なくとも一部が互いに溶着されていることを特徴とする前記体液処理用品。 It has a longitudinal direction and a lateral direction, has a body side and its opposite side, a liquid-permeable inner surface sheet located on the body side, an outer surface sheet located on the opposite side, and a liquid absorption located between these sheets A bodily fluid treatment article in which a plurality of compressed grooves are formed in the inner surface sheet,
The inner sheet and the outer sheet are formed of a fiber nonwoven fabric,
The compressed groove is formed across the longitudinal direction and the lateral direction of the inner sheet, and from the first part formed from the inner sheet toward the outer sheet, and the first part. A second portion formed to be continuous with the first portion toward the outer sheet,
In the second part, at least a part of the fibers of the inner surface sheet and the fibers of the outer surface sheet are welded to each other. - 前記内面シートおよび前記外面シートは、熱可塑性合成樹脂を含む繊維不織布によって形成される請求項1記載の体液処理用品。 2. The body fluid treatment article according to claim 1, wherein the inner sheet and the outer sheet are formed of a fiber nonwoven fabric containing a thermoplastic synthetic resin.
- 前記第2部分は、前記圧搾条溝において前記縦方向および前記横方向の少なくともいずれかに間欠的に複数並んで形成される請求項1または2記載の体液処理用品。 The bodily fluid treatment article according to claim 1 or 2, wherein a plurality of the second parts are intermittently arranged in at least one of the vertical direction and the horizontal direction in the compressed groove.
- 前記圧搾条溝は、前記横方向の長さ寸法を二等分する仮想縦中心線および前記縦方向の長さ方向を二等分する仮想横中心線に対して傾斜する請求項1~3のいずれかに記載の体液処理用品。 The compressed groove is inclined with respect to a virtual vertical center line that bisects the length dimension in the horizontal direction and a virtual horizontal center line that bisects the length direction in the vertical direction. The body fluid treatment product according to any one of the above.
- 前記圧搾条溝は、前記第1部分の一部および前記圧搾条溝の延長線上のいずれかに重なる凹部をさらに有する請求項1~4のいずれかに記載の体液処理用品。 The body fluid treatment article according to any one of claims 1 to 4, wherein the compressed groove further includes a concave portion that overlaps with a part of the first portion and an extension line of the compressed groove.
- 前記芯材は、単位面積当たりの質量が70~350g/m2である請求項1~5のいずれかに記載の体液処理用品。 The body fluid treatment article according to any one of claims 1 to 5, wherein the core material has a mass per unit area of 70 to 350 g / m 2 .
- 前記圧搾条溝は、前記内面シートの面積の10~30%である請求項1~6のいずれかに記載の体液処理用品。 The body fluid treatment article according to any one of claims 1 to 6, wherein the compressed groove is 10 to 30% of an area of the inner sheet.
- 前記内面シートは、短繊維を含む請求項1~7のいずれかに記載の体液処理用品。 The body fluid treatment article according to any one of claims 1 to 7, wherein the inner sheet includes short fibers.
- 熱可塑性合成樹脂を含む繊維不織布によって形成される第1および第2ウェブと、これらウェブの間に配置された吸液性の芯材とを含む積層ウェブに、複数の圧搾条溝を形成する製法において、
前記第1ウェブに、前記芯材および前記第2ウェブを積層する工程と、溝形成手段によって、前記第1および第2ウェブと芯材とによって形成された積層ウェブを圧縮するとともに前記圧搾条溝を形成する工程と、シール手段によって、前記第1および第2ウェブを前記芯材の周囲で互いに接合しシール部を形成する工程と、切断手段によって、前記第1および第2ウェブを前記シール部の周囲で切断する工程とを含み、
前記溝形成手段は、第1凸部および前記第1凸部から突出する第2凸部が形成されたエンボスロールと、これに対向するとともに表面が平滑なバックアップロールとを有し、前記エンボスロールおよび前記バックアップロールによって、前記積層ウェブが加圧・加熱され、前記第2凸部が対応する位置で前記第1および第2ウェブの繊維の少なくとも一部が熱溶着されることを特徴とする前記製法。 A process for forming a plurality of compressed grooves in a laminated web including first and second webs formed of a fiber nonwoven fabric containing a thermoplastic synthetic resin and a liquid-absorbent core material disposed between the webs In
The laminated web formed by the first and second webs and the core material is compressed by the step of laminating the core material and the second web on the first web and the groove forming means, and the compressed groove. Forming the sealing portion by joining the first and second webs around the core material by sealing means, and cutting the first and second webs by the sealing means. Cutting around
The groove forming means includes an embossing roll formed with a first convex part and a second convex part protruding from the first convex part, and a backup roll facing the same and having a smooth surface, and the embossing roll. The laminated web is pressurized and heated by the backup roll, and at least some of the fibers of the first and second webs are thermally welded at the positions corresponding to the second convex portions. Manufacturing method.
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CN102821723A (en) | 2012-12-12 |
MY161444A (en) | 2017-04-14 |
JP5665338B2 (en) | 2015-02-04 |
JP2011200337A (en) | 2011-10-13 |
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