Integrally blow-moulded bag-in-container having interface vents opening to the atmosphere at location adjacent to a bag's mouth; preform for making it; and process for producing the preform and bag-in-container

Patent metadata

Field	Value
Publication number	US-8931651-B2
Application number	US-45089608-A
Country	US
Kind code	B2
Filing date	Apr 18, 2008
Priority date	Apr 19, 2007
Publication date	Jan 13, 2015
Grant date	Jan 13, 2015

Abstract

The invention is an integrally blow-moulded bag-in-container ( 2 ) and preform ( 1 ) for making it. The bag-in-container ( 2 ) has an inner layer ( 21 ) forming the bag and an outer layer ( 22 ) forming the container, and a mouth ( 5 ) fluidly connecting the volume defined by the bag to the atmosphere. The container further has at least one interface vent ( 3 ) fluidly connecting the interface ( 14 ) between inner and outer layers to the atmosphere, wherein the at least one vent ( 3 ) runs parallel to the interface between inner and outer layers ( 21 ) ( 22 ) and opens to the atmosphere at a location ( 4 ) adjacent to, and oriented coaxially with the bag-in-container's mouth ( 5 ). Processes for manufacturing a preform and a bag-in-container as defined above are defined too.

First claim

The invention claimed is:

1. An integrally blow-moulded bag-in-container comprising:
an inner layer forming the bag and an outer layer forming the container, and a mouth fluidly connecting the volume defined by the bag to the atmosphere, said container having at least one interface vent fluidly connecting an interface between inner and outer layers to the atmosphere,
said at least one vent runs parallel to the interface between inner and outer layers and opens to the atmosphere at a location adjacent to and oriented approximately coaxially with said mouth.

2. The bag-in-container according to claim 1 , wherein the inner and outer layers are of different materials.

3. The bag-in-container according to claim 1 , wherein the inner and outer layers are of the same material.

4. The bag-in-container according to claim 1 , wherein the inner and outer layer consist of a material selected from PET, PEN, PTT, PA, PP, PE, HDPE, EVOH, PGAc, PLA, and copolymers or blends thereof.

5. The bag-in-container according to claim 4 , wherein the inner and outer layers consist of different materials.

6. The bag-in-container according to claim 4 , wherein the inner and outer layers consist of the same material.

7. The bag-in-container according to claim 1 , wherein the at least one vent is in the shape of a wedge with the broad side at the level of the opening thereof and getting thinner as it penetrates deeper into the bag-in-container, until the inner and outer layers meet to form an interface.

8. The bag-in-container according to claim 1 , wherein more than one vent are distributed around a lip of the bag-in-container's mouth.

Assignees

• Van Hove Sarah
• Peirsman Daniel
• Verpoorten Rudi
• Anheuser Busch Inbev Sa

Inventors

• Van Hove Sarah
• Peirsman Daniel
• Verpoorten Rudi

Classifications

• B29C49/071

  Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties · CPC title

• B29C2949/0715

  the preform having one end closed · CPC title

• B29C49/22 Primary

  using multilayered preforms or parisons · CPC title

• B65D83/771

  for dispensing fluent contents by means of a flexible bag or a deformable membrane or diaphragm · CPC title

• B29C49/06 Primary

  Injection blow-moulding · CPC title