WO1985004572A1 - Recipient, par exemple un biberon avec doublure flexible et site d'acces et son procede de fabrication - Google Patents

Recipient, par exemple un biberon avec doublure flexible et site d'acces et son procede de fabrication Download PDF

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Publication number
WO1985004572A1
WO1985004572A1 PCT/US1985/000576 US8500576W WO8504572A1 WO 1985004572 A1 WO1985004572 A1 WO 1985004572A1 US 8500576 W US8500576 W US 8500576W WO 8504572 A1 WO8504572 A1 WO 8504572A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
accordance
liner
shell
layer
Prior art date
Application number
PCT/US1985/000576
Other languages
English (en)
Inventor
James L. Cabernoch
Leonard A. White
Original Assignee
Baxter Travenol Laboratories, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US06/599,412 external-priority patent/US4558792A/en
Priority claimed from US06/599,302 external-priority patent/US4657151A/en
Application filed by Baxter Travenol Laboratories, Inc. filed Critical Baxter Travenol Laboratories, Inc.
Publication of WO1985004572A1 publication Critical patent/WO1985004572A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J11/00—Teats
    • A61J11/0075—Accessories therefor
    • A61J11/0095—Seal rupturing means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J9/00—Feeding-bottles in general
    • A61J9/001—Feeding-bottles in general with inner liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/20—Flexible squeeze tubes, e.g. for cosmetics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
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    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3086—Interaction between two or more components, e.g. type of or lack of bonding
    • B29C2949/3094—Interaction between two or more components, e.g. type of or lack of bonding preform having at least partially loose components, e.g. at least partially loose layers
    • 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
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
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    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
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    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
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    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43123—Closing the ends of squeeze tubes, e.g. for toothpaste or cosmetics
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
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    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2325/00—Polymers of vinyl-aromatic compounds, e.g. polystyrene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2391/00—Waxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • CONTAINER SUCH AS A NURSING CONTAINER
  • the present invention relates, in general, to nursing containers for feeding liquid to an infant. More particularly, the present invention relates to nursing containers of the type employing a flexible liner or pouch which is collapsible upon dispensing of the contents to an infant.
  • Nursing containers employing flexible liners or pouches have been proposed in a wide variety of shapes and configurations, as exemplified by U.S. Patents Nos. 3,117,874 to Horan; 3,537,226 to Fields; 2,628,909 to Horan; and 3,790,017 to Fitzpatrick et al . Perhaps the most well known of these is the type of nurser shown in Fitzpatrick.
  • the nurser depicted there employs a reusable rigid sleeve or tube and a disposable plastic liner which may be secured to the end of the tube and held in place by a resilient nipple.
  • U.S. Patents Nos. 3,537,225 and 3,386,604 to Fields disclose a disposable infant container, and a relatively complex method for making it where the nipple is actually formed into the co ⁇ tainer wall, and must be opened by piercing the nipple with a pin or similar instrument.
  • the pouch disclosed in Fields may be workable, however, it is believed that the pouch is not generally practical, and is not well suited to home or institutional use.
  • the two-stage manufacturing process to make the pouch and outer cover is complicated, and likely to result, it is believed, in a relatively costly product.
  • a nursing container which has a substantially continuous outer semirigid or rigid plastic shell, a flexible plastic liner interior of the shell and substantially coextensive therewith, a quantity of liquid, such as infant formula or water, within the liner, ' and a nipple assembly secured to the shell and adapted to provide communiucation to the otherwise sealed plastic liner.
  • An intentionally and selectively weak or temporary bond is provided between the liner and shell to permit separation of the liner from the shell subsequent to formation of the nursing container, and upon d spensing of the liquid contents-from within the liner.
  • the bond between the liner and shell may be provided by a selected low tensile strength adhesive between the liner and shell materials, or by natural adherence between the plastic materials of the shell and l ner or by electrostatic attraction between the shell and liner.
  • the shell and liner are coextruded or laminated together in the bonded condition, and it is only necessary that they adhere during fabrication of the nursing container. After the container is formed, filled and sealed, it is not necessary that the liner and shell remain bonded together.
  • a degradable adhesive may also be used between the shell and liner to permit subsequent separation.
  • the resulting container provides a pre-filled pre-sterilized infant nurser which is particularly convenient to use, does not require substantial on-site preparation, and has the advantage of a flexible liquid container which permits dispensing of the contents to an infant without requiring displacement air.
  • the contents may be accessed by a nipple assembly attached to the shell which ⁇ k-
  • nipple access site provided in the container wall where the liner is tightly sealed to the shell.
  • the nipple access site is defined by an annular fold formed in the container wall which captures the liner mechanically to seal it to the shell around the periphery of the access site and prevent liquid from flowing back between the liner and shell and hold the liner tightly to assure pentration by the nipple access member.
  • the present invention is not limited to a nursing container but may also be a container having an access assembly for delivery of a contained fluid in a manner such that the flexible liner collapses and such that the entry of displacement air is not required.
  • Figure 1 is a perspective view of a nursing con- tainer with dispensing nipple and cover, in a removed posi ⁇ tion, embodying the present invention.
  • Figure 2 is a longitudinal cross-sectional view of the container of Figure 1, taken along line 2-2 of Figure 1.
  • Figure 3 is a cross-sectional view of the con ⁇ tainer of Figure 1 taken along line 3-3 of Figure 1.
  • Figure 4 is a cross-sectional view of tKe con ⁇ tainer of Figure 1, illustrating dispensing of the contents through the nipple assembly, and collapse of the liner wall as the contents are dispensed.
  • Figure 5 is a diagrammatic illustration of the coextrusion of a plastic parison having a rigid outer layer - and a flexible inner layer weakly adhered together for use in the present invention.
  • Figure 6 is a vertical cross-sectional view of molding apparatus for forming a coextruded parison into the desired nursing container.
  • Figures 7a and 7b are enlargements of the lower end portion of the molds of Figure 6, depicting sealing of the parison walls together by the molds.
  • Figure 8 is a perspective view of an alternative embodiment of the nursing container of the present inven ⁇ tion, which is formed by folding a generally planar sheet of coextruded or laminated plastic to form a generally pouch shape.
  • Figure 9 is a longitudinal sectional view of the . container of Figure 8 taken along line 9-9 of Figure 8.
  • Figure 10 is a cross-sectional view of the con ⁇ tainer of Figure 8 taken along line 10-10 of Figure 8.
  • Figure 11 is an enlarged cross-sectional view of the nipple assembly and the end of the container of Figure 8 to which the nipple assembly is attached, showing a nip ⁇ ple assembly access site on the container.
  • Figures 12a-12c depict a method for forming a nipple access site in the container wall.
  • the present invention is generally embodied in a nursing con ⁇ tainer 20 having an outer rigid plastic shell or layer 22, an inner flexible liner 24 in which liquid 28, which may be an infant formula, water or the like, is contained and a nipple assembly 26 attached to the shell.
  • the line_r 24 is substantially coextensive with the outer shell 22 and weak ⁇ ly or temporarily bonded thereto, the bond being suffi- ciently weak or degradable to perait collapse of the inner liner wall as contents are dispensed to an infant.
  • This construction provides a sealed unitary container which may be aseptically filled or filled and subsequently sterilized to provide long shelf life, while simultaneously having the convenience and benefits of a flexible container which does not require the entry of displacement air for dispensing the contents to an infant.
  • the liner and shell may be weakly or temporarily bonded together in various ways.
  • a low tensile strength adhesive is coextruded or laminated between the liner and shell.
  • the layers may be held together by a natural adherence of the materials used for the liner and shell, or by an electrostatic attraction between the shell and liner.
  • a degradable adhesive which holds the liner and shell together during fabrication but releases them later when the adhesive degrades. The degradation process may occur by way of time, or may be accelerated by exposure to heat or ultraviolet light, depending on the particular adhesive used.
  • the container of the present invention may be formed, for example, by coextruding a parison having an inner plastic layer corresponding to the container liner, an outer layer corresponding to the container shell, and a layer of selected adhesive or plastic therebetween.
  • the parison may then be molded, such as by blow molding, to form the desired container shape, and the nipple assembly then attached to the end of the container.
  • the container may be formed of a generally planar coextruded or laminated sheet which is folded together and sealed on the sides and end to form a generally pouch- shaped container.
  • the sealed seams of the container are preferably formed in a manner which is depic- ted in Figures 7a and 7b. As shown there, the plastic film is compressed together along the seam, until the portion forming the liner is forced from between the shell-forming layers, which then seal together.
  • This sealing technique thus permits collapse of the inner liner from all directions, rather than simply a collapse of opposed portions of the liner together.
  • Figure 1 depicts one embodiment of the nursing container embodying the present invention, as it might be formed by blow molding a parison.
  • the shell and liner form a generally cylindrically shaped container, which mounts the nipple assembly 26 at one end, and is sealed along a tail seal 30 at the other end.
  • the shell and liner prefer ⁇ ably form a unitary closed liquid compartment 32 within which the liquid formula, water or other liquid for infant feeding is contained.
  • the liner 24 is disposed along sub ⁇ stantially the entire inner surface of the shell 22, in other words, is co-extensive with the shell.
  • the liner 24 is preferably made of a relatively thin plastic film suffi- ciently flexible to collapse under the vacuum created by dispensing of liquid from the compartment 32.
  • the liner is inert to infant nutritional liquid, and may be made of materials such polyethylene, or a laminate of poly ⁇ ethylene and polyvinylchloride and the like. While the liner may be made of a single layer of such material it may also be made of a composite material or a laminated film which includes an oxygen barrier to prevent substantial oxygen transmission to the liquid contained in the compart ⁇ ment, thereby improving shelf life.
  • the shell 22 is also made of plastic material, and preferably a material which, when cooled, provides a semirigid or rigid protective shell for the liner-24.
  • the shell 22 is preferably sufficiently thick to prevent inadvertent puncture of the liner during shipping and storing, as well as to provide an oxygen barrier to prevent substantial access of oxygen to the liquid contained within the liner.
  • the shell 22 may be made of a single material or may be a laminated or composite material including an oxygen barrier material, such as Saran plastic.
  • an oxygen barrier material such as Saran plastic.
  • the many materials suitable for shell material are polypropylene, polyethylene, and high impact polystyrene.
  • the liner and shell are formed, for example, by coextrusion or lamination, to have a selectively weak adherence which will hold the layers together at least during container formation, but permit the liner to collapse when the con ⁇ tents of the container are dispensed.
  • the adhesive material preferably has a very low tensile strength to permit separation of the liner and shell upon dispensing of the contents.
  • a suitable low bond strength adhesive layer such as an ultra low molecular weight polyethylene may be provided between those materials.
  • a wax-based adhesive layer which permits ready separation of liner and shell and also may be weakened upon heating of the container contents prior to feeding of the infant,.may also be used.
  • Alternative means for adhering the liner to the shell include the use of an adhesive, the bond strength of which diminishes or weakens when exposed to certain conditions.
  • One advantage of such adhesive material is that it permits a very strong bond during formation of the container and the manufacturing steps involved therewith, yet provides that the liner is completely unbonded or unadhered to the shell by the time it is put to use.
  • Various types of degradable materials which degrade under different conditions, may be used in accordance with the present invention. For example, some adhesives may degrade with age, or with the application of heat such as occurs in autoclave sterilization. In another type of adhesive, the degradation is activiated by exposure to ultraviolet light. Employing this adhesive, the finished container would be exposed to ultraviolet light when manufacturing was complete, starting the degradation process which would permit the liner to readily separate from the shell when eventually used.
  • An alternative means for adhering the shell and liner together is electrostatic force, wherein a selected electrostatic charge is applied to each of the shell and the liner, resulting in attraction therebetween which is sufficient to permit the shell and liner to adhere together at least during manufacturing processing.
  • the container formed by the shell and liner is preferably a unitary sealed compartment, which may be either aseptically filled or filled and subsequently ster ⁇ ilized. Yet it provides the convenience and safety of a collapsible liner, which permits the contents to be dis-institud without leakage or fear of air ingestion by the infant.
  • the nipple assembly 26 is sealed to one end of the container and includes inte ⁇ gral means for accessing the contents by piercing the con- tainer wall.
  • One type of nipple assembly suitable for use with the present invention is depicted, in cross-section, in Figure 11. As seen there, the nipple assembly 26 inc ⁇ ludes a flexible nipple 34 preferably made of elastomeric material, such as thermoplastic rubber, Kraton G plastic of the Shell Chemical Company, silicone, or other material.
  • the nipple 34 has a generally radial base flange 36 which is sealed to the outer shell 22.
  • the nipple 34 has a side wall 38 upstanding from the base flange, and terminating in a narrower dispensing end portion 40 of the nipple, which has a dispensing aperture of 42 therein.
  • the inside surface of the dispensing end of the nipple is generally spherical, to capture the spherical end of a puncturing spike 44 disposed within the nipple.
  • the spike 44 is in a retracted position where it remains until the contents of the container must be accessed. At that time, the spike is forced through the container wall either by squeezing the dispensing end 40 of the nipple or by axially compressing of the nipple.
  • the puncturing spike 44 is generally elongated and hollow, terminating in a tapered lower end 46.
  • the spike has an interior passageway extending upwardly through the center of the • spike and communicates through the lower end of the spike with elongated side aperatures 50.
  • FIG. 4 A cross-sectional view of the container alone, showing the opening spike in an extended liquid-accessing position is illustrated in Figure 4. That Figure demonstrates the initial collapsing of the container walls as liquid is dispensed to an infant through the nipple.
  • a cover 52 is preferably sealed over the nipple.
  • the cover 50 is generally of rigid pl stic construction, and includes a general radial bottom flange 54 which is heat sealed to the upper surface of the container shell 22.
  • the heat seal between the flange 54 of the cover and the shell is frangible to permit easy removal of the cover by exerting a force on pull tab 56 of the cover.
  • Figures 1-3 depict a mechanical attachment of the nipple assembly to the end of container.
  • bottom flange 36 of the nipple assembly is mechanically captured, and preferably thermally bonded, to the container wall.
  • the container has a reduced diameter portion 57 which forms a radial shoulder 59 that the nipple flange engages against.
  • the materials of the nipple and container wall are sufficiently compatible that the flange may be thermally bonded to the wall.
  • the end poriton 61 of the container wall is formed, as by heat swaging, or other suitable method, to tightly lock the nipple to the container.
  • a separate membrane 63 may be sealed to the underside of the nipple flange to isolate the nipple and spike from the container contents and prevent leakage during shipping and storing.
  • Figures 5-7b depict one method by which a container embodying the present invention may be constructed.
  • Diagrammatically shown in Figure 5 is a coextruder die 72 of a type well known in the art for extruding a plastic parison 74 comprising layers of various plastics and other materials fed to the coextruder from extruders nos. 1, 2 and 3.
  • extruder no. 1 could be the extruder for the plastic material forming the rigid shell 22.
  • Extruder no. 3 would be the extruder for the plastic material forming for the flexible liner material 24, and
  • extruder no. 2 would be the extruder for the adhesive or bonding material, if any, between the liner and shell.
  • the parison 74 is positioned, either directly from the coextruder, or after cooling and reheating, between a pair of molds 76 ( Figure 6), which, when joined, define a mold cavity 78 of the desired container shape.
  • the parison is expanded to conform to the cavity shape by injecting compressed air, or applying a vacuum to the wall of the parison, or a combination of both.
  • the lower end of the molds 22 have pinch edges 80 which close substantially together when the mold closes,- to form the tail seal 30 of the container.
  • the bottom of the container could remain open for filling and be subsequently closed by a heat sealing operation similar to that described hereinafter.
  • the nipple assembly may be sealed to the container either in place within the mold, or subsequent to cooling.
  • apparatus not shown, is employed with the mold or subsequently to form the annular nipple access site on the end of the container.
  • means such as a retractable pin may be utilized to form small port 81 ( Figures 1-3) in the outer shell only, which allows air to enter the shell as the contents are dispensed and the liner collapses.
  • Figures 7a and 7b depict the formation of the tail seal 30 of a container of the present invention, form- ed by blow molds 76.
  • Figure 7a depicts the lower edges 80 of the molds coming together and compressing the end of the container together.
  • the inner liner 24 has come into contact between the tail seal portions of the outer shell 22.
  • the portion of plastic material forming the inner liner is forced from between the shell portions, as shown in Figure 7b.
  • the end portion of the liner at the seal is not trapped between the joined shell portions, and thus the entire liner is collapsible toward the dispensing nipple as liquid flows therefrom. Although this is not required for satisfactory container operation, it is considered desirable.
  • FIGs 8-10 depict a container formed from a generally flat sheet of plastic material coextruded or laminated of a shell layer 22 and a liner layer 24.
  • the nipple assembly 26 is attached generally to the center of the sheet (not shown) and the sheet is folded until the end portions of the sheet meet. The lateral edges of the sheet are sealed along lines 82, leaving the end opposite the nipple open for filling. Upon completion of filling, the end of the container is closed and sealed at 84, thereby providing a complete sealed unitary container and nipple assembly arrangement.
  • the lateral seals 82 and end seal 84 of the container of Figure 9 are carried out in a manner such as that previously depicted and described in Figures 7a and 7b, which force the liner portion from between the shell, to permit collapse of the liner in all directions as liquid is dispensed through the nipple assembly 26.
  • the nipple assembly 26 is preferably attached to the shell at an access site in accordance with the present invention, which will permit a puncturing member to access the container, without causing delamination of the liner and shell in that area which would permit liquid contents to escape into the space between the liner and shell.
  • the nipple is attached to an access site, generally designated 58 at the end of the container.
  • the access site may be provided by utilizing a permanent adhesive or bonding between the shell and liner in that area of the container
  • the access site is preferably defined by a generally annular fold 60 in the container wall which tightly entraps the liner and seals it.to the shell peripherally around the access site so that liquid cannot escape into the space between the liner and shell.
  • the fold as shown in enlarged cross-section in Figure 11, is actually formed by a pair of 180° folds in opposite directions, so as to define a generally S-shaped cross-sectional configuration
  • the container wall is folded through 180° at 62 to bring the liner portions 64 into a generally face-to-face relationship and tightly trap them between the facing shell portions 66 and 68.
  • a return 180° fold of the container wall is provided at 70 such that the container wall continues in the original direction.
  • the portion of inner liner may delaminate or separate from the shell in the immediate area of the access site enclosed by the annular fold, the capture of the inner liner between folded portions of the shell mechanically seals the liner to the shell and prevents liquid from entering the space between the liner and the shell.
  • Figures 12a-12c depict the preferred method for forming the nipple access site and container in a sheet, to form the container depicted in Figure 9.
  • a portion of the sheet, having a laminated or coextruded shell layer 22, liner layer 24 weakly temporarily bonded together is depicted in Figure 12a prior to any of the formation steps " for defining an access site.
  • a generally annular V-shaped groove 88 having an inner wall portion 90 and an outer wall portion 92, is formed in the sheet, such as by thermoformfng, circumscribing the intended nipple access site 58.
  • the V-shaped groove is preferably defined to protrude toward the liner side of the sheet, i.e., downwardly in Figure 12b.
  • the walls 90 and 92 forming the V-shaped groove are then heat-swaged in a radially outward direction, capturing the portions 64 of the liner tightly between adjacent folded portions 66 and 68 of the shell.
  • a generally raised rib 94 is preferably formed adjacent and outwardly of the V-shaped groove, so as to better define fold line 62 of the contain ⁇ er wall during the swaging operation.
  • clam-shell shaped sidewall portions 95 are thermoformed into the sheet.
  • the nipple 34 is then heat-sealed to " the shell at the access site cir ⁇ cumscribed by the annular fold, and the clam-shell sides are folded together along thermoformed dimple 97 and the sides 82 sealed together.
  • the end 84 remains open tempo ⁇ rarily for filling, and after filling is sealed to provide a unitary sealed container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)

Abstract

Récipient (20) possédant une enveloppe extérieure rigide ou semi-rigide (22) et une doublure intérieure flexible coétendue (24) que l'on fait adhérer faiblement ou temporairement à l'enveloppe (22) afin de permettre une fabrication plus commode du récipient (20) et qui est pourtant repliable de manière à permettre la distribution du contenu (28) sans air de déplacement, ainsi qu'un site d'accès (58) déterminé dans la paroi du récipient à laquelle peut être fixé un montage d'accès (26). On peut faire adhérer faiblement la doublure (24) à l'enveloppe (22) grâce à un adhésif à faible résistance à la traction bien qu'il soit aussi possible d'utiliser l'adhérence naturelle ou l'attraction électrique statique. Alternativement, un adhésif dégradable peut être utilisé pour maintenir la doublure (24) et l'enveloppe (22) ensemble pendant le montage; mais il s'affaiblit à un point inférieur au seuil de libération entre l'enveloppe et la doublure avant la période d'utilisation. Le site d'accès (58) est déterminé de préférence par un pli annulaire (60) dans la paroi du récipient qui capture étroitement la doublure (24) afin de former une fermeture hermétique périphérique mécanique entre l'enveloppe (22) et la doublure (24) autour du site d'accès afin d'empêcher une fuite de liquide dans la zone entre l'enveloppe (22) et la doublure (24). Le récipient (20) est particulièrement utile en tant que biberon, comportant un site d'accès à tétine (58) avec un montage de tétine fixé (26).
PCT/US1985/000576 1984-04-12 1985-04-05 Recipient, par exemple un biberon avec doublure flexible et site d'acces et son procede de fabrication WO1985004572A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/599,412 US4558792A (en) 1984-04-12 1984-04-12 Container such as a nursing container, with flexible liner and access site and method of making said access site
US599,302 1984-04-12
US06/599,302 US4657151A (en) 1984-04-12 1984-04-12 Container such as a nursing container, with flexible liner
US599,412 1984-04-12

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WO1985004572A1 true WO1985004572A1 (fr) 1985-10-24

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WO (1) WO1985004572A1 (fr)

Cited By (1)

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GB2325219A (en) * 1997-05-13 1998-11-18 Gleneagles Spring Waters Compa Prefilled, disposable baby's bottle.

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US2519986A (en) * 1949-06-30 1950-08-22 Allan E Trout Baby food formula container
US2679336A (en) * 1950-10-09 1954-05-25 Leo M Harvey Sealed fluid container
US2885104A (en) * 1956-10-11 1959-05-05 Greenspan Irving Bottle with disposable cartridge
US3204855A (en) * 1963-04-29 1965-09-07 Int Latex Corp Flexible container
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US3519157A (en) * 1964-05-15 1970-07-07 Abbott Lab Sealed feeding bottle assembly
US3334764A (en) * 1966-10-25 1967-08-08 John P Fouser Infant nurser
US3926706A (en) * 1969-10-31 1975-12-16 Reifenhaeuser Kg Film blowing method
US3977153A (en) * 1970-11-06 1976-08-31 The Dow Chemical Company Container for food products and method for making same
US3777925A (en) * 1971-04-16 1973-12-11 R Eckholm Disposable nursing device
US3936334A (en) * 1971-12-25 1976-02-03 Yoshino Kogyosho Co., Ltd. Collapsable tube
US3900548A (en) * 1973-01-24 1975-08-19 Cosden Oil & Chem Co Coextrusion of polystyrene and polysulfones
US4244914A (en) * 1976-02-18 1981-01-13 Montedison S.P.A. Process for preparing gas-, vapor- and odor-proof coupled and coextruded multilayer articles of thermoplastic material and closed-surface bodies comprising the same
US4107362A (en) * 1976-11-22 1978-08-15 Valyi Emery I Multilayered container
US4286047A (en) * 1979-07-25 1981-08-25 Minnesota Mining And Manufacturing Company Pressure-sensitive adhesive susceptible to ultraviolet light-induced detackification
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Publication number Priority date Publication date Assignee Title
GB2325219A (en) * 1997-05-13 1998-11-18 Gleneagles Spring Waters Compa Prefilled, disposable baby's bottle.

Also Published As

Publication number Publication date
EP0179093A1 (fr) 1986-04-30
EP0179093A4 (fr) 1987-10-08

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