US 11,752,683 B2
Integrally blow-moulded bag-in-container comprising an inner layer and an outer layer comprising energy absorbing additives, preform for making it and process for producing it
Sarah Van Hove, Brussels (BE); Daniel Peirsman, Brussels (BE); and Rudi Verpoorten, Lommel (BE)
Assigned to ANHEUSER-BUSCH INBEV S.A., Brussels (BE)
Filed by Anheuser-Busch InBev S.A., Brussels (BE)
Filed on May 2, 2022, as Appl. No. 17/735,051.
Application 16/889,566 is a division of application No. 15/419,098, filed on Jan. 30, 2017, granted, now 10,668,659, issued on Jun. 2, 2020.
Application 15/419,098 is a division of application No. 12/450,893, granted, now 9,555,572, issued on Jan. 31, 2017, previously published as PCT/EP2008/054766, filed on Apr. 18, 2008.
Application 17/735,051 is a continuation of application No. 16/889,566, filed on Jun. 1, 2020, abandoned.
Application 12/450,893 is a continuation in part of application No. 11/785,749, filed on Apr. 19, 2007, abandoned.
Prior Publication US 2022/0266498 A1, Aug. 25, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 45/00 (2006.01); B29C 49/22 (2006.01); B29B 11/14 (2006.01); B65D 23/02 (2006.01); B65D 83/00 (2006.01); B29C 49/06 (2006.01); B29B 11/08 (2006.01); B29C 35/08 (2006.01); B29C 49/42 (2006.01); B29C 49/64 (2006.01); B29C 45/16 (2006.01); B29K 23/00 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01)
CPC B29C 49/22 (2013.01) [B29B 11/08 (2013.01); B29B 11/14 (2013.01); B29C 35/0805 (2013.01); B29C 49/06 (2013.01); B29C 49/4273 (2013.01); B29C 49/6418 (2013.01); B65D 23/02 (2013.01); B65D 83/0055 (2013.01); B29C 45/1684 (2013.01); B29C 2035/0822 (2013.01); B29C 2045/1601 (2013.01); B29C 2949/072 (2022.05); B29C 2949/073 (2022.05); B29C 2949/0773 (2022.05); B29C 2949/0819 (2022.05); B29C 2949/302 (2022.05); B29C 2949/3008 (2022.05); B29C 2949/3012 (2022.05); B29C 2949/3016 (2022.05); B29C 2949/3026 (2022.05); B29C 2949/3032 (2022.05); B29C 2949/3034 (2022.05); B29K 2023/06 (2013.01); B29K 2023/065 (2013.01); B29K 2023/086 (2013.01); B29K 2023/12 (2013.01); B29K 2067/00 (2013.01); B29K 2067/046 (2013.01); B29K 2077/00 (2013.01); B29K 2105/005 (2013.01); B29K 2105/0032 (2013.01); B29K 2105/258 (2013.01); B29L 2031/712 (2013.01); Y10T 428/1352 (2015.01)] 8 Claims
OG exemplary drawing
 
1. A process for producing a bag-in-container comprising the following steps:
providing a polymer preform having:
an inner layer and an outer layer, wherein each of said inner layer and said outer layer consists of a single layer comprising PET, said preform forms a two layer bag-in-container having a body and neck region upon blow-moulding, said bag-in container comprising a vent connecting the interface to the atmosphere and
wherein the obtained inner layer of said bag-in-container releases from the obtained outer layer upon introduction of a pressurized gas at a point of interface between said two layers in the neck region of the bag-in-container, and
at least one of said inner and outer layers includes an additive, the additive is selected from the group consisting of energy absorbing additives and colorants;
heating said preform to blow-moulding temperature in a single oven; and
blow-moulding the heated preform to form the bag-in-container;
wherein a type and an amount of the additive in the at least one of the inner and outer layers of said preform are such that said two layers reach their respective blow-moulding temperatures simultaneously.