Integrally Blow-Moulded Bag-in-Container Having an Inner Layer and the Outer Layer Made of the Same Material and Preform for Making It

• US 20160185505A1
• Filed: 02/23/2016
• Published: 06/30/2016
• Est. Priority Date: 04/19/2007
• Status: Active Grant

• Current Assignee: Anheuser-Busch InBev SA/NV
• Original Assignee: Anheuser-Busch InBev SA/NV
• Inventors: Van Hove, Sarah, Peirsman, Daniel, Verpoorten, Rudi
• Granted Patent: US 9,517,876 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B29B 11/14 characterised by structure or composition
• CPC Class Codes: B29C 2045/1601 the injected materials not being adhered or bonded to each other B29C45/0017 takes precedence
• CPC Class Codes: B29C 2049/023 using inherent heat of the preform, i.e. 1 step blow moulding
• CPC Class Codes: B29C 2949/0715 the preform having one end closed
• CPC Class Codes: B29C 2949/072 having variable wall thickness
• CPC Class Codes: B29C 2949/073 having variable diameter
• CPC Class Codes: B29C 2949/0773 Threads
• CPC Class Codes: B29C 2949/3008 at neck portion
• CPC Class Codes: B29C 2949/3012 at flange portion
• CPC Class Codes: B29C 2949/3016 at body portion
• CPC Class Codes: B29C 2949/302 at bottom portion
• CPC Class Codes: B29C 2949/3026 having two or more components
• CPC Class Codes: B29C 2949/3032 having components being injected
• CPC Class Codes: B29C 2949/3034 having two or more components being injected
• CPC Class Codes: B29C 45/0053 combined with a final operation, e.g. shaping injection-compression moulding B29C45/561
• CPC Class Codes: B29C 45/16 Making multilayered or multicoloured articles B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816
• CPC Class Codes: B29C 45/1684 Injecting parison-like articles B29C45/1625, B29C45/1643 and B29C45/1646 take precedence
• CPC Class Codes: B29C 49/06 Injection blow-moulding
• CPC Class Codes: B29C 49/071 Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
• CPC Class Codes: B29K 2023/06 PE, i.e. polyethylene
• CPC Class Codes: B29K 2023/065 : HDPE, i.e. high density polyethylene
• CPC Class Codes: B29K 2023/086 : EVOH, i.e. ethylene vinyl alcohol copolymer
• CPC Class Codes: B29K 2023/12 : PP, i.e. polypropylene
• CPC Class Codes: B29K 2067/003 : PET, i.e. poylethylene terephthalate
• CPC Class Codes: B29K 2067/043 : PGA, i.e. polyglycolic acid or polyglycolide
• CPC Class Codes: B29K 2067/046 : PLA, i.e. polylactic acid or polylactide
• CPC Class Codes: B29K 2077/00 : Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2101/12 : Thermoplastic materials
• CPC Class Codes: B29K 2105/253 : Preform
• CPC Class Codes: B29K 2105/258 : Tubular
• CPC Class Codes: B29K 2667/043 : PGA, i.e. polyglycolic acid or polyglycolide
• CPC Class Codes: B29L 2031/712 : Containers; Packaging elements or accessories, Packages closures therefor B29L2031/56; ink or toner cartridges B29L2031/7678; squeeze tubes B29L2023/20; suitcases B29L2031/7418
• CPC Class Codes: B65D 23/02 : Linings or internal coatings
• CPC Class Codes: B65D 25/16 : Loose, or loosely-attached, linings
• CPC Class Codes: B65D 83/0055 : Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
• CPC Class Codes: Y10T 428/1352 : Polymer or resin containing [i.e., natural or synthetic]

Abstract

The present invention relates to an integrally blow-moulded bag-in-container (2) having an integrally blow-moulded bag-in-container wherein the same polymer is in contact on either side of the interface between the inner (11) and outer layers (12). It also concerns a preform (1, 1′) for blow-moulding a bag-in-container, having an inner layer and an outer layer, wherein the preform forms a two-layer container upon blow-moulding, and wherein the thus obtained inner layer of the container releases from the thus obtained outer layer upon introduction of a gas at a point of interface between the two layers. The inner and outer layers are of the same material.

Claims

1-14. -14. (canceled)

15. A two-layer integrally blow-moulded dispensing device comprising:

(a) an outer container consisting of a first polymer layer comprising PET having a neck region, a body portion, and a mouth;

(b) a collapsible inner bag consisting of a second polymer layer comprising PET, suitable for holding a liquid in said inner bag;

(c) at least one vent between said inner bag and said outer container, said vent open to an outer atmosphere, wherein said at least one vent is disposed at the neck region; and

(d) wherein PET of said outer container and PET of said inner bag are adjacent to and in direct contact before introduction of a pressurized gas through the at least one vent, and releasably adhered to one another over an interface so as to delaminate upon introduction of the pressurized gas through the at least one vent, collapsing said inner bag and dispensing said liquid contained therein.

16. The blow-moulded dispensing device according to claim 15 wherein more than one vent is distributed around the mouth.

17. A two-layer integrally blow-moulded dispensing device comprising:

an outer container consisting of a first polymer layer comprising PET having a neck region, a body portion, and a mouth;

a collapsible inner bag consisting of a second polymer layer comprising PET, suitable for holding a liquid in said inner bag, wherein the outer container and the inner bag are adjacent, said inner bag in direct contact with the outer container forming an interface to which the outer container and said inner bag are releasably adhered; and

a vent between said inner bag and the outer container, said vent open to an outer atmosphere, wherein said vent is disposed at the neck region;

wherein the dispensing device is implemented by the steps comprising;

(a) introducing a pressurized gas through said vent;

thereby

(b) collapsing said inner bag from the outer container to dispense said liquid contained therein.

18. A method of dispensing a liquid using a bag-in-container device having an outer container consisting of a first polymer layer comprising PET having a neck region, a body portion, and a mouth;

a collapsible inner bag consisting of a second polymer layer comprising PET, suitable for holding a liquid in said inner bag, wherein the outer container and the inner bag are adjacent, said inner bag in direct contact with the outer container forming an interface to which the outer container and said inner bag are releasably adhered; and

a vent between said inner bag and the outer container, said vent open to an outer atmosphere, wherein said vent is disposed at the neck region;

said method comprising the steps of;

(a) introducing a positively pressured gas through said vent;

(b) collapsing the inner bag from the outer container thereby dispensing said liquid contained therein.