Integrally blow-moulded bag-in-container having an inner layer and the outer layer made of the same material and preform for making it
US9944453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2008 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Mar 24, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1352
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an integrally blow-molded bag-in-container (2) having an integrally blow-molded 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-molding a bag-in-container, having an inner layer and an outer layer, wherein the preform forms a two-layer container upon blow-molding, 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.