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

摘要

An integral two-layer preform produces integrally blow-moulded bag-in-containers. The preform has an inner layer and an outer layer, wherein the preform forms a two layer container upon blow-moulding, 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 of the two layers. The melting temperature of the inner layer is greater than or equal to the melting temperature of the outer layer.

主权项

1. An integral two-layer preform for the production of integrally blow-moulded bag-in-containers, said preform comprising:
an inner layer and an outer layer, wherein said preform forms a two layer container upon blow-moulding, and wherein the thus obtained inner layer of said container releases from the thus obtained outer layer upon introduction of a gas at a point of interface of said two layers; and the melting temperature of the inner layer is greater or equal to the melting temperature of the outer layer.