Multi-layer flexible container for flowable materials

Details Multi-layer flexible container for flowable materials Multi-layer flexible container for flowable materials

1996-11-15

1998-12-01

Harrison, Robert H.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428367, B65D 3008, B65D 7500, B65D 7558, B65D 2728

Patent

active

058435409

ABSTRACT:
A flexible container for a flowable material fabricated from a multi-layer film which may include an interior layer, an exterior layer and a core layer. The core layer is composed of a blend of approximately 40 to 60 parts of a polyethylene material having a density greater than 0.930, approximately 40 to 60 parts of a linear copolymer of ethylene and a C.sub.4 -C.sub.10 alpha-olefin having a density between 0.900 to 0.930 g/cm3 and a melt index of 0.20 to 2.0 dg/min, and approximately from 0 to 10 parts of an additive. The interior layer may be composed of a material selected from the group consisting of a linear copolymer of ethylene and a C.sub.4 -C.sub.10 alpha-olefin, ethylene vinyl acetate, a metallocene catalyzed linear low density polyethylene, and any mixture thereof. The exterior layer is composed of a material selected from the group consisting of surlyn, metallocene catalyzed linear low density polyethylene, a linear copolymer of ethylene and a C.sub.4 -C.sub.10 alpha-olefin, a low density polyethylene, a medium density polyethylene, a high density polyethylene, ethylene vinyl acetate and any mixture thereof. The flexible container is self-supporting when filled with the flowable material. The flexible container has a relatively planar bottom section. The flexible container may have a resealable opening for dispensing the flowable material whereby the flexible container is compressible as the amount of flowable material inside the flexible container is reduced.

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