摘要：

A collapsible dispensing container for packaging preparations containing hard-to-hold ingredients such as acetic acid. The container comprises a deformable tubular body and a thermoplastic head fused thereto. The wall of the tubular body is made of a plurality of laminations, including a sealant core film which prevents product migration and delamination. The wall of the tubular body comprises, from the inside of the tubular body toward the outside thereof, overlying layers of ethylene-acrylic acid copolymer, the sealant core film and an outer thermoplastic (e.g., polyethylene) layer bonded to the outer layer of the sealant core film by another layer of ethylene-acrylic acid copolymer. The sealant core film comprises a metallic foil (e.g., aluminum) layer bonded to said inner ethylene-acrylic acid layer, an intermediate biaxially oriented corona treated polyester barrier layer bonded to said metal foil layer by a polyester adhesive layer or other suitable adhesive and an outer layer of ethylene-vinyl acetate or narrow molecular weight distribution (MWD) polyethylene bonded to the outer surface of said barrier layer by another polyester adhesive layer or other suitable adhesive. All layers are coextensively bonded to each other along their entire respective surfaces to insure against product migration and delamination at the metal foil interface.

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