초록 ▼

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 cor

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.

대표청구항 ▼

A collapsible dispensing container having a tubular body and a thermoplastic head fused thereto, said tubular body having a plurality of laminations, including a sealant core film, a first overlying layer of ethylene-acrylic acid copolymer on the product side of said sealant core film, an outer over

A collapsible dispensing container having a tubular body and a thermoplastic head fused thereto, said tubular body having a plurality of laminations, including a sealant core film, a first overlying layer of ethylene-acrylic acid copolymer on the product side of said sealant core film, an outer overlying thermoplastic polymer layer and a second layer of ethylene-acrylic acid copolymer for adhesively bonding the outer side of said sealant core film to said outer thermoplastic polymer layer; said sealant core film comprising a metallic foil layer secured to said second ethylene-acrylic acid copolymer layer, an intermediate polyester barrier layer bonded to said metal foil layer by a first adhesive layer and a heat sealable polymer layer bonded to the other surface of said barrier layer by a second adhesive layer.