Patent ID: 9555572
Date: 2017-01-31
CPC Classifications: B29B,B29C,B29K,B29L,B65D,Y10T

Claim:
1. A preform for blow-molding a dispensing bag-in-container, said preform comprising: a neck region, a body portion, wherein each of the neck region and the body portion consists of an inner layer and an outer layer, a mouth with a lip defining a perimeter, a vent disposed at the neck region, and said outer layer adjacent to said inner layer forming an interface in the body portion and the neck region, wherein each of said inner layer and said outer layer consists of a single layer comprising PET and one of said inner layer and said outer layer includes an additive allowing both the inner layer and the outer layer to reach their respective blow-molding temperatures substantially simultaneously upon heating said layers together in a single IR oven, said preform, upon blow-molding, forms a two-layer bag-in-container comprising a collapsible inner bag contained in an outer container and an interface therebetween for receiving pressurized gas through said vent to dispense a liquid contained therein.