Integrally blow-moulded bag-in-container having an inner...

B - Operations – Transporting – 29 – B

Patent

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Details

B29B 11/14 (2006.01) B29C 49/06 (2006.01) B29C 49/22 (2006.01) B65D 25/14 (2006.01) B65D 77/06 (2006.01)

Patent

CA 2681839

The present invention relates to an integrally blow-moulded bag-in-container (2) having an integrally blow-moulded 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-moulding a bag-in-container, having 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 between the two layers. The inner and outer layers are of the same material.

La présente invention concerne une caisse-outre moulée par soufflage d'un seul tenant présentant une caisse-outre moulée par soufflage d'un seul tenant, le même polymère étant en contact de chaque côté de l'interface entre les couches interne (11) et externe (12). La présente invention concerne également une préforme (1, 1') permettant de mouler par soufflage une caisse-outre, présentant une couche interne et une couche externe, la préforme formant une caisse à deux couches après moulage par soufflage, et la couche interne ainsi obtenue de la caisse se séparant de la couche externe ainsi obtenue lors de l'introduction d'un gaz à un point d'interface entre les deux couches. Les couches interne et externe sont fabriquées dans le même matériau.

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