US20050067414A1 - Multiple cavity container with method and apparatus for forming the same - Google Patents
Multiple cavity container with method and apparatus for forming the same Download PDFInfo
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- US20050067414A1 US20050067414A1 US10/898,805 US89880504A US2005067414A1 US 20050067414 A1 US20050067414 A1 US 20050067414A1 US 89880504 A US89880504 A US 89880504A US 2005067414 A1 US2005067414 A1 US 2005067414A1
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- Prior art keywords
- container
- cavity
- wall
- threads
- depression
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0238—Rigid or semi-rigid containers provided with a recess in order to be seated on the neck or similar protrusion of a larger container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/54—Moulds for undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/04—Multi-cavity bottles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0237—Rigid or semi-rigid containers provided with a recess on their external surface for accommodating a smaller container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/12—Means for the attachment of smaller articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/0094—Containers having an external wall formed as, or with, a diaphragm or the like which is deformed to expel the contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
A plastic container for liquid or the like has an open top, with exterior threads to receive a cap, opening into a main cavity defined by the wall of the container. An inward depression is formed in the wall of the container and formed with threads so that the outer wall of the main cavity forms the interior wall of a secondary cavity. A threaded cap mates with the threads formed on the secondary cavity to close the secondary cavity. The container is preferably formed by blow molding a parison or a stretched molded tube formed with an exterior thread. One of the blow mold halves includes an interiorly extending rotatable protuberance, formed with threads, which create threads on the interior of the second cavity. As the molds are retracted, the protuberance is rotated to separate from the formed threads on the wall of the secondary cavity.
Description
- This application claims priority of U.S. provisional patent application Ser. No. 60/490,797, filed Jul. 28, 2003, said application being incorporated herein in its entirety by reference.
- This invention relates to plastic containers having a plurality of cavities and to methods of forming such containers by blow molding or stretch molding, and to unique molds for use in such molding process.
- Containers having multiple compartments or cavities for packaging a plurality of different materials, such as liquids, powders, creams, and the like, have been proposed and have a variety of uses. Additionally, one of the compartments may contain articles such as a prize, or the like. Typically, such containers have a primary cavity and a smaller, secondary cavity containing some substance or product which is useful in connection with the liquid or other material stored in the primary cavity.
- As an example, U.S. Patent Application Publication No. 2002/0008116 discloses a liquid container with a secondary compartment for retaining a supplement, such as a vitamin, mineral, analgesic, antibiotic, or other medicine, flavor, or other color additive or nutritional substance, which is useful in connection with the liquid contained in the primary container. Often, the secondary cavity of the container will include some additive which is intended to be mixed with the liquid in the primary container when the liquid is poured out of the container. U.S. Pat. No. 5,215,214 discloses a multi-compartment container of that type. U.S. Pat. No. 5,992,677 discloses a container adapted to store a liquid in the primary compartment and an article or prize in the secondary compartment. Certain containers are adapted to store products used for laundering, such as a detergent solution in the primary container and a bleach in the secondary container as disclosed in U.S. Pat. No. 4,618,444. U.S. Pat. No. 3,658,204 discloses a container for a two-component varnish, such as a urethane, wherein the components must be mixed shortly before use. Other uses of a plural cavity container might be to store a relatively large volume of face lotion or body lotion and a relatively expensive cream that is to be used only on a portion of the body, such as the eyes, in the secondary container.
- As exemplified by the above-noted patents, these multi-cavity containers are often relatively complex, involving a substantial number of parts which must be assembled, and are accordingly rather expensive. One of the least expensive and most useful methods of forming liquid containers is blow molding, wherein a parison is first extruded and is then disposed in a two-part mold. Gas is injected into the interior of the parison, causing the formation of a central cavity which presses the walls of the parison against the opposed surfaces of the two mold halves to form a finished container. The economy and efficiency of this process has led to its wide scale adoption for the formation of plastic containers for liquids.
- The present invention is accordingly directed toward a unique multi-cavity container which is adapted to formation by blow molding or its related variant, stretch molding. The invention is further directed toward unique process and apparatus for blow molding and stretch molding capable of forming the multi-cavity containers in a precise and economical manner.
- The novel containers of the present invention are characterized by an exterior wall enclosing a main cavity and open at one end to form a spout through which the main cavity may be filled and the contents thereof may be poured out. This open top typically has threads formed about its exterior, to receive a closing cap having mating threads on its interior walls. The container further comprises one or more secondary cavities. Each secondary cavity in the container, comprises a depression formed in the exterior wall of the container such that the exterior wall in the region of the depression forms the interior walls of the respective secondary cavity. Female threads are formed about the periphery of the edge of each secondary cavity and each secondary cavity may be closed by a cap member which has male threads which engage the female threads to close off the cavity.
- Any number of the secondary cavities may be formed about the exterior wall of the container. The secondary cavities are typically formed with central axes at right angles to the central axis of the main cavity, so that the cap for the main cavity is oriented at 90 degrees to the caps for the secondary cavities, but this relation is not critical.
- The secondary cavity may alternatively be formed with engagement for a snap-on lid rather than a screw cap.
- In the process of forming the novel containers of the present invention, by blow molding, or its variant, stretch molding, novel tooling is employed wherein the blow molding forms threads on the pour spout for the main cavity in a normal manner by pressing the surface of the parison against threaded sections formed on the two die halves. Each secondary cavity is formed by a respective male protrusion that extends inwardly, toward the opposing die half, from one of the side walls of a die half. The protrusion forms an indentation in the exterior wall of the parison as it blows out to form the interior wall of the secondary cavity. The protuberance contains formations on its outer surface, which form female threads on the wall of the second cavity where it joins the main surface of the exterior wall of the main cavity, i.e. at the entrance to the second cavity. The engagement of the threaded formation on the protuberance and the female threads thus formed at the wall of the secondary cavity prevent the. protuberance from withdrawing axially from the completed container section. Accordingly, the protuberance is rotated so as to free its threads from the molded threads in the container wall as the mold halves separate to release a molded container.
- The formation of female threads in the wall of the secondary cavity by blow molding is an important aspect to the present invention. The interior walls of blow molded bottles are necessarily of indeterminate dimension because of variations in thickness of the wall of the blow molded product. By forming the exterior threads on the exterior wall of the blow molded cavity, which forms an interior wall of the secondary cavity, high quality, precision threading is formed.
- Other objects, advantages and applications of the present invention will be made apparent by the following descriptions of preferred embodiments of the invention. The description makes reference to the accompanying drawings in which:
-
FIG. 1 is a perspective view of a dual cavity container and a dispensing top for the main cavity and a cap for the secondary cavity, in exploded view; -
FIG. 2A is a schematic diagram illustrating the first step in the manufacture of the container of the present invention by blow molding, wherein a parison is disposed between the two halves of an open mold, shown in cross section, built in accordance with the present invention; -
FIG. 2B is the second stage of the blow molding process wherein the mold is closed on the parison and gas is introduced to the interior of the parison, forcing one of the parison walls against a rotatable protuberance on the mold; -
FIG. 2C is the third stage of the process wherein the parison is continued to expand within the cavity of the mold; -
FIG. 2D is the next stage of the process wherein the gas pressure on the interior walls of the parison has forced it into conformity with the walls of the mold and the protuberance; -
FIG. 2E illustrates the release of the mold from the completed container; -
FIG. 2F illustrates the completed container ofFIG. 1 in cross section; -
FIG. 3A is a view, partly perspective and partly in cross section, illustrating an alternative embodiment of the multiple cavity container of the present invention wherein the threads on the secondary cavity are formed on the exterior wall of the cavity; -
FIG. 3B illustrates is a modified protrusion for the die half used to form the secondary cavity and threads ofFIG. 3A . -
FIG. 4A is a cross-sectional view of an alternative embodiment of the multi- cavity invention with a snap-on lid; -
FIG. 4B is a front view of the snap-on lid container ofFIG. 4B ; -
FIG. 5 is a front view of an alternative embodiment of the container having a rectangular opening in the secondary container and a fitting snap-on lid; -
FIG. 6 is an alternative embodiment of the multi-cavity container of the present invention with a triangular opening to the secondary cavity and a snap-on lid; -
FIG. 7 is an alternative embodiment of the present invention wherein an ornate cap for a container, in the form of a human head, is formed by the blow molding process of the present invention; -
FIG. 8 is an exploded view of an alternative embodiment of the invention wherein a blow molded cap adapted to receive a straw is formed by the process of the present invention; -
FIG. 9 is an exploded view of a two-cavity container formed in accordance with the present invention having a pump top; -
FIG. 10 is a perspective view of an alternative embodiment of a container formed in accordance with the present invention wherein a cap blow molded in accordance with the process of the present invention is formed with a secondary cavity therein; -
FIG. 11A is an exploded perspective view of an alternative embodiment of the invention constituting a three-cavity container wherein the cap for the secondary cavity is formed with its own internal third cavity; -
FIG. 11B shows the embodiment ofFIG. 11A assembled; -
FIG. 12A is an exploded perspective view of an alternative embodiment of a squeeze bottle formed in accordance with the present invention; -
FIG. 12B is a rear view of the squeeze bottle ofFIG. 12A ; -
FIG. 12C is a cross-sectional view of the bottle ofFIG. 12B , taken alongline 12C-12C ofFIG. 12B ; and -
FIG. 13 is a perspective view of a stretch tube that may be used as an alternative to the parison in blow molding certain of the containers of the present invention. - Referring to the drawings, a typical multi-cavity container formed in accordance with the present invention is illustrated in
FIG. 1 in exploded form with its cap. A vertical cross section through the container is illustrated inFIG. 2F . - The container, generally indicated at 10, has an open top 12 surrounded by an
annular spout 14.Threads 16 are formed about the outer periphery of thespout 14. The top 12 opens into aprimary container volume 18 enclosed by front andrear side walls bottom wall 24 as well asside walls 26 connecting the front, rear and bottom walls. - The
annular spout 14 may be closed off with a pouringspout 28, shown in exploded relation, which has threads on its interior cap (not shown) which mate with thethreads 16 to close off the top 12. Thefront wall 20 of the container is formed with a central, cylindrical, inwardly directeddepression 30 which forms the wall of a secondary cavity.Threads 32 are formed on the wall of thedepression 30, bounding thefront surface 20 of the container. This opening may be closed off with acap 34 having a reduced diameter section 36 withthreads 38 formed about its surface. Thethreads 38 engage with thethreads 32 to retain thecap 34 at the opening of the secondary cavity formed by thedepression 30. Ashoulder 40 formed on thecap 34 at the margin of the reduceddiameter section 32 bears against the outer surface of thewall 20 surrounding therecess 30 to seal the contents in the container. - The method of forming the
container 10 by blow molding is generally illustrated inFIGS. 2A-2F . The process starts with a parison 50 (or alternatively, an injection molded stretch tube as illustrated inFIG. 13 ) constituting an open ended cylinder formed of a thermoformable plastic, typically produced by an extrusion process. A pair of molding diehalves heated parison 50 as illustrated inFIG. 2B , so as to seal the opposed edges at one end of thecylinder 50 and bring the opposed surfaces into close proximity to one another at the other end of the cylinder, allowing a passage for the introduction of pressurized gas into the resulting envelope. As illustrated inFIG. 2B , thedie half 54 includes arotatable protrusion 56 havingthreads 58 formed about its outer surface beyond the point where the protrusion extends beyond the wall of thedie half 54 into the interior of the mold. - As shown in
FIG. 2C , gas introduced into the heated parison envelope through the passage causes the parison walls to balloon outwardly toward the dies, bringing one of the walls into contact with the surface of theprotrusion 56. Continued introduction of gas causes the parison walls to form intimate contact with the mating walls of the two die halves and surround the section of theprotrusion 56 which extends interiorly of thedie wall 54. This formsthreads 60 on the interior wall of the depression formed by theprotrusion 56 engaging theparison threads 58. As has been noted, this formation of threads on the exterior wall of the blow molded product results in extremely precise thread configuration. - After the parison cools, the molding machine draws the die halves 52 and 54 away from one another. During this process it is necessary to rotate the
protrusion 56 about its central axis so as to unscrew thethreads 58 formed on the outer surface of the protrusion from the moldedthreads 60 formed by the protrusion threads in theparison 50. As illustrated inFIG. 2E , the body includesflash sections bottle 10 illustrated inFIG. 2F . In addition to themain cavity 18, the bottle has asecondary cavity 66 which may be closed by thecap 34. -
FIG. 3A illustrates a second embodiment of the multiple cavity container of the present invention, generally indicated at 70, which is substantially identical to thecontainer 10 with the exception of the fact thatthreads 72 for closing asecondary cavity 74 are formed on the exterior sides of anannular flange 76 formed about the outer wall of the secondary cavity.FIG. 3B illustrates a modified form of the protrusion for the die half, generally indicated at 80, which is used to form thethreads 72 and theannular extension 76. -
FIGS. 4A and 4B respectively illustrate a cross-sectional side view and a front view of an alternative form of the multi-cavity container wherein the container is closed by a snap-onlid 90, rather than a screw cap. The snap-on lid engagescircular tab section 92 formed at the outside of thesecondary cavity 94. The main cavity, like the previous embodiments, is located at 96. -
FIG. 5A illustrates an embodiment of the container wherein a snap-oncap 100 is generally rectangular. In the embodiment ofFIG. 6 a triangular snap-oncap 102 is employed. -
FIG. 7 discloses another embodiment of the invention wherein a primary container, generally indicated at 110, of a conventional variety, with a pouringspout 112 withexternal threads 114, is formed by conventional means such as blow molding. The secondary cavity for the container is disposed within a cap, generally indicated at 116, formed in accordance with the method of the present invention. Thecap 116 is generally spherical in shape, but has anindentation 118, extending from one surface, which is formed withthreads 120 on its internal wall. Thecap 116 also has a pouringspout 122 which communicates with a central cavity formed on the interior of the cap so that the volume within the cap can act as a secondary cavity, relative to the main cavity, disposed in thecontainer 110. Thespout 122 may be formed with threads and may be closed off with an appropriate cap (not shown). - The
cap 116 has an outer contour which is figurative, in this case representing ahuman face 130, with a nose and the like.Cap 130 may be formed by the blow molding process illustrated inFIGS. 2A-2E to create a hollow product with internal threads. In alternative embodiments, thecap 116 might not have aspout 122, but could simply be totally enclosed. -
FIG. 8 illustrates an alternative form of cap for acontainer 110 which is similar to primary container illustrated inFIG. 7 . A cap, generally indicated at 140, for closing off a spout on thecontainer 110, is generally spherical and has acentral recess 142 extending from one side. The recess is formed with threads 144 on its interior wall. Thecap 140 has another funnel-shapedrecess 146 extending from a diametrically opposite point on the cap to theopening 142. This funnel-shapedrecess 146 terminates in a thinplastic wall 148, which separates thefunnel 146 from the bottom of therecess 142. When thecap 140 is retained on thebottle 110, the funnel and thethin wall 148 allow the insertion of a straw into the bottle by punching through thewall 148, either with a straw itself or with another implement, so as to communicate thefunnel 146 to theopening 142, and thus to the contents of thecontainer 110. Thecap 140 could be formed with its own spout communicating with a void formed in the interior of the cap to provide a secondary cavity within the cap. This, for example, might contain flavoring for the contents of the primary cavity of thecontainer 110. -
FIG. 9 illustrates a container generally indicated at 150 which corresponds to the present invention and may be formed by the method of the present invention. It includes aspout 152 with blow moldedthreads 154 surrounding its exterior, which communicates with amain cavity 154 within the container. A secondary cavity is formed by adepression 156 formed inwardly from the front face of thecontainer 150.Threads 158 formed about aflange 160 allow the access to the secondary container and allow it to be closed off bycap 162. - The
main cavity 154 is preferably closed off by apump top 164 which has threads (not shown), which engage with thethreads 151. - The
container 150 and its top 164 might contain face lotion or body lotion, or the like, in themain cavity 154, with a more expensive body care product, such as an eye care product, in the smaller,secondary cavity 156. - Another embodiment of the invention is illustrated in
FIG. 10 wherein a container, generally indicated at 180, having a threadedspout 182 and containing a main cavity, is formed by a conventional blow molding process. - The cap for the
container 180 is generally indicated at 184 and constitutes a toroidal body, havingthreads 186 formed on its interior wall by a blow molding process of the type disclosed inFIGS. 2A-2E , so as to form an interiorsecondary cavity 188 within the toroidal cover. Aspout 190 formed withthreads 192 provides access to thesecondary cavity 188 and may be closed off by an appropriate cover (not shown). -
FIG. 11A discloses another embodiment of the invention wherein a blow molded container generally indicated at 200 and formed by the process ofFIGS. 2A-2E , has amain cavity 202 formed as a central depression in the outer wall of thecontainer 200, withthreads 204 formed about the secondary cavity. Aspout 206 formed withexternal threads 208 provides access to the main cavity. - The cap for closing off the
secondary cavity 202, generally indicated at 210, is itself a blow molded container. Thecap 210 is disc-shaped, with a hollow interior.Threads 212 are formed about its outer perimeter and aspout 214 formed with exterior threads 260 allows access to the interior of thecap 210 and may be closed off with a threadedcap 218. This forms a three cavity container, shown inFIG. 11B . Thecap 210 for thesecondary cavity 202 could be filled with a suitable liquid and frozen and then screwed into thebottle 200 to keep the contents of the bottle cold. Alternatively, a first liquid, such as a body lotion, could be retained in the primary cavity of thebottle 200, a second, typically more expensive lotion or material, such as eye lotion, could be retained in thesecondary cavity 202, and yet a third liquid, such as hair liquid, could be retained in the third cavity, within thecap 210. - Another embodiment of the invention, constituting a squeeze container, generally indicated at 230, is shown in side-perspective view in
FIG. 12A and in rear view inFIG. 12B .FIG. 12C constitutes a cross-section through the body taken alongline 12C-12C ofFIG. 12B . - The
bottle 230, which is preferably formed by the method illustrated inFIGS. 2A-2E , has an interiormain cavity 232. Access to thecavity 232 is through aspout 234 havingscrew threads 236 formed about its exterior. Thespout 234 could be closed off with acap 238 having a pouringaperture 240 which is hingedly retained in thecap 238 and may be moved between the open position as shown inFIG. 12A and a closed position shown inFIG. 12B . A squeeze top of this type is conventional. Thebottle 230 has asecondary cavity 242 formed by an inward depression from its front side and havingthreads 244 arrayed about the interior wall of the depression adjacent the front face. Similarly, athird cavity 246 is formed in the front face above thecavity 242 and formed withscrew threads 248. Each of them may be closed by an appropriate cap (not shown). - The rear of the container is formed with a series of
corrugated louvers 250 which take the form of concentric rings. Thecenter section 252, in the middle of thelouvers 250, may be depressed by means ofspots 254, to decrease the volume of thecontainer 230 and force contents out of thespout 234. -
FIG. 13 discloses a stretch molded tube, generally indicated at 280, which may be substituted for theparison 50 illustrated inFIGS. 2A-2E . Thetube 280 is injection molded so as to have acentral cavity 282 opening through a top 284 which hasscrew threads 286 formed by the injection molding process. Thebody 288 of the tube may be heated and used in a blow molding process in the same way as theparison 50, but the finished product will contain the previously moldedcap 284 andthreads 286.
Claims (7)
1. A multi-cavity container having an outer wall and bottom and an open top, communicating with a main cavity defined by the wall and bottom;
a secondary cavity formed by a depression in the outer wall extending inwardly toward the center of the main cavity;
screw threads formed about the perimeter of the depression adjacent the outer wall of the container, and
caps adapted to close off the main cavity and the secondary cavity.
2. The container of claim 1 wherein the depression in the side wall of the container forming the secondary cavity is cylindrical.
3. The container of claim 1 which is formed by a blow molding process which also forms threads about the perimeter of the depression forming the secondary cavity.
4. The container of claim 3 formed by a pair of mold halves including one mold half which has an inwardly extending protrusion rotatably supported within the wall of the mold half, thread producing formations on the sides of the protrusion within the die half, and means for rotating the protrusion relative to the mold half as it is withdrawn from the finished product, so as to release threads formed on the interior of the depression forming the secondary cavity from the thread-producing formations on the exterior of the protrusion.
5. The container of claim 1 including a plurality of depressions in the outer wall forming second and subsequent secondary cavities
6. The method of forming a blow molded, multi-cavity container, having a side wall defining a main cavity, an inwardly directed depression in the side wall defining an interior wall of a secondary cavity, and threads formed about the perimeter of said depression adjacent to the container side wall, comprising:
disposing a parison between two halves of an open mold, one half having a cylindrical member rotatably supported in the mold wall and extending into the mold cavity and containing projections on its outer surface capable of forming threads;
closing the mold and introducing gas to the interior of the parison to expand the parison against the mold to form a container having a central cavity and a depression formed by the cylindrical member;
and rotating the cylindrical member as the mold halves are opened to release the cylindrical member from threads formed on the interior of the depression on the side wall of the resulting container.
7. A blow molding tooling for forming a container having a main cavity enclosed by an outer wall and at least one threaded secondary cavity formed by a depression in the outer wall and extending inwardly toward the center of the main cavity, said tooling including one mold half which has an inwardly extending protrusion rotatably supported within the wall of the mold half to form said depression, and thread-producing formations on an exterior surface of the protrusion within the mold half, said tooling further comprising means for rotating the protrusion relative to the mold half as the mold half is withdrawn from the finished product, so as to release threads formed on the interior of the depression forming the secondary cavity from the thread-producing formations on the exterior of the protrusion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/898,805 US20050067414A1 (en) | 2003-07-28 | 2004-07-26 | Multiple cavity container with method and apparatus for forming the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US49079703P | 2003-07-28 | 2003-07-28 | |
US10/898,805 US20050067414A1 (en) | 2003-07-28 | 2004-07-26 | Multiple cavity container with method and apparatus for forming the same |
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US20050067414A1 true US20050067414A1 (en) | 2005-03-31 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/898,805 Abandoned US20050067414A1 (en) | 2003-07-28 | 2004-07-26 | Multiple cavity container with method and apparatus for forming the same |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060054583A1 (en) * | 2004-09-14 | 2006-03-16 | DROGERIA ALIMENTARI S.r.I. | Container to be coupled with a bottle |
US20070014898A1 (en) * | 2005-07-12 | 2007-01-18 | Nottingham-Spirk Design Associates, Inc. | Polymeric cereal container as well as system and method utilizing same |
US20080136067A1 (en) * | 2005-06-21 | 2008-06-12 | Kenneth Latimer Scott | Method and apparatus for the production of hollow molded articles and a hollow molded article made by the method |
DE102007014601A1 (en) * | 2007-03-23 | 2008-09-25 | Kautex Textron Gmbh & Co. Kg | Extrusion blow molded component made of thermoplastic material |
US20090084795A1 (en) * | 2005-10-03 | 2009-04-02 | Kagen Kristin W | Container With Sealed Coolant Compartment |
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US20110097453A1 (en) * | 2009-10-28 | 2011-04-28 | Scott Michael Buesching | Container Assembly for a Potable Liquid and Method for Manufacturing Same |
US20110168582A1 (en) * | 2010-01-14 | 2011-07-14 | Tanya Bannister | Formula helper device |
US20120012551A1 (en) * | 2010-07-16 | 2012-01-19 | Russell Sinacori | Container having interchangeable sleeve |
US20120187008A1 (en) * | 2011-01-26 | 2012-07-26 | Gillingwater James D | Receptacle for attaching to a product having a curved wall |
WO2013044906A1 (en) * | 2011-09-28 | 2013-04-04 | Huebel Egon | Device for storing recycling material |
WO2014121317A1 (en) * | 2013-02-06 | 2014-08-14 | Cukman Rosemarie | Method for producing a bottle with an attached object and bottle thus produced |
US20140366485A1 (en) * | 2013-06-17 | 2014-12-18 | The Clorox Company | Skin antiseptic applicator and methods of making and using the same |
US20160340083A1 (en) * | 2015-05-22 | 2016-11-24 | EVI Spirits LLC | Vodka bottle: pass through logo insert |
USD802443S1 (en) * | 2015-12-02 | 2017-11-14 | Pride Industries | Two bottle container package |
US20180339805A1 (en) * | 2017-05-23 | 2018-11-29 | Rebecca Finell | Flavored beverage systems |
CN113507803A (en) * | 2021-06-15 | 2021-10-15 | 杭州电子科技大学 | Deep-sea pressure-resistant container with imitated siderite beetle bionic structure and preparation method thereof |
US20230024962A1 (en) * | 2021-07-24 | 2023-01-26 | Chris Telman | Beverage container and lid system and method |
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US20060054583A1 (en) * | 2004-09-14 | 2006-03-16 | DROGERIA ALIMENTARI S.r.I. | Container to be coupled with a bottle |
US20080136067A1 (en) * | 2005-06-21 | 2008-06-12 | Kenneth Latimer Scott | Method and apparatus for the production of hollow molded articles and a hollow molded article made by the method |
US20070014898A1 (en) * | 2005-07-12 | 2007-01-18 | Nottingham-Spirk Design Associates, Inc. | Polymeric cereal container as well as system and method utilizing same |
US20090084795A1 (en) * | 2005-10-03 | 2009-04-02 | Kagen Kristin W | Container With Sealed Coolant Compartment |
US9046122B2 (en) | 2007-03-23 | 2015-06-02 | Kautex Textron Gmbh & Co. Kg | Assembly of thermoplastic extrusion blow molded component and fastening element |
DE102007014601A1 (en) * | 2007-03-23 | 2008-09-25 | Kautex Textron Gmbh & Co. Kg | Extrusion blow molded component made of thermoplastic material |
DE102007014601B4 (en) * | 2007-03-23 | 2009-05-20 | Kautex Textron Gmbh & Co. Kg | Extrusion blow molded component made of thermoplastic material |
US20100135747A1 (en) * | 2007-03-23 | 2010-06-03 | Kautex Textron Gmbh & Co. Kg | Extrusion blow molded component made of thermoplastic |
EP2308341A2 (en) | 2009-09-30 | 2011-04-13 | L'Oréal | Container having a tool retainer, container carrying a cosmetic tool and associated cosmetic tool |
US20110097453A1 (en) * | 2009-10-28 | 2011-04-28 | Scott Michael Buesching | Container Assembly for a Potable Liquid and Method for Manufacturing Same |
US8402722B2 (en) * | 2009-10-28 | 2013-03-26 | Omni Partners Llc | Method for manufacturing a container assembly |
US20110168582A1 (en) * | 2010-01-14 | 2011-07-14 | Tanya Bannister | Formula helper device |
US20120012551A1 (en) * | 2010-07-16 | 2012-01-19 | Russell Sinacori | Container having interchangeable sleeve |
US20120187008A1 (en) * | 2011-01-26 | 2012-07-26 | Gillingwater James D | Receptacle for attaching to a product having a curved wall |
US9144933B2 (en) * | 2011-01-26 | 2015-09-29 | James D. Gillingwater | Receptacle for attaching to a product having a curved wall |
WO2013044906A1 (en) * | 2011-09-28 | 2013-04-04 | Huebel Egon | Device for storing recycling material |
RU2657574C2 (en) * | 2013-02-06 | 2018-06-14 | Розмари КУКМАН | Method of making bottle and bottle |
WO2014121317A1 (en) * | 2013-02-06 | 2014-08-14 | Cukman Rosemarie | Method for producing a bottle with an attached object and bottle thus produced |
CN105164066A (en) * | 2013-02-06 | 2015-12-16 | 罗斯玛丽·丘克曼 | Method for producing bottle with attached object and bottle thus produced |
CN105164066B (en) * | 2013-02-06 | 2020-10-30 | 罗斯玛丽·丘克曼 | Method for producing bottle with attached object and bottle produced thereby |
US9789998B2 (en) | 2013-02-06 | 2017-10-17 | Rosemarie CUKMAN | Method for producing a bottle with an attached object and bottle thus produced |
US20140366485A1 (en) * | 2013-06-17 | 2014-12-18 | The Clorox Company | Skin antiseptic applicator and methods of making and using the same |
US9867973B2 (en) | 2013-06-17 | 2018-01-16 | Medline Industries, Inc. | Skin antiseptic applicator and methods of making and using the same |
US9999757B2 (en) * | 2013-06-17 | 2018-06-19 | Medline Industries, Inc. | Skin antiseptic applicator and methods of making and using the same |
US10661064B2 (en) | 2013-06-17 | 2020-05-26 | Medline Industries, Inc. | Skin antiseptic applicator and methods of making and using the same |
US10765849B2 (en) * | 2013-06-17 | 2020-09-08 | Medline Industries, Inc. | Skin antiseptic applicator and methods of making and using the same |
US10293977B2 (en) * | 2015-05-22 | 2019-05-21 | EVI Spirits | Vodka bottle: pass through logo insert |
US20160340083A1 (en) * | 2015-05-22 | 2016-11-24 | EVI Spirits LLC | Vodka bottle: pass through logo insert |
USD802443S1 (en) * | 2015-12-02 | 2017-11-14 | Pride Industries | Two bottle container package |
US20180339805A1 (en) * | 2017-05-23 | 2018-11-29 | Rebecca Finell | Flavored beverage systems |
CN113507803A (en) * | 2021-06-15 | 2021-10-15 | 杭州电子科技大学 | Deep-sea pressure-resistant container with imitated siderite beetle bionic structure and preparation method thereof |
US20230024962A1 (en) * | 2021-07-24 | 2023-01-26 | Chris Telman | Beverage container and lid system and method |
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