Integral two layer preform, process and apparatus for the production thereof, process for producing a blow-moulded bag-in-container, and bag-in-container thus produced

CAFC
  • US 9,162,372 B2
  • Filed: 04/18/2008
  • Issued: 10/20/2015
  • Est. Priority Date: 04/19/2007
  • Status: Active Grant
First Claim
Patent Images

1. An integrally blow-moulded dispensing bag-in container consisting of:

  • (a) an outer container made of a single layer, said single layer comprising PET having a first melting temperature, said outer container comprising a body portion, and a neck region, and a mouth;

    (b) a collapsible inner bag made of a single layer, said single layer comprising PET having a second melting temperature that is greater than or equal to the first melting temperature, said inner bag comprises a neck region and a body portion being fixed to the outer container at least at the neck;

    (c) at least one vent fluidly connecting the region between the inner bag and the outer container, said vent open to the atmosphere;

    (d) the outer container and said inner bag are releasably adhered to one another over substantially the entirety of the inner bag and outer container so as to readily delaminate at the body portion upon introduction of a pressurized gas through at least one vent between the inner bag and the outer container, so as to collapse the body portion of the inner bag and dispense a liquid contained therein.

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