Multilayer plastic structures, containers made therefrom, and methods of making the structures
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United States of America Patent
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May 7, 2002
Grant Date -
N/A
app pub date -
Mar 29, 1999
filing date -
Mar 29, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved coextruded asymmetric multilayer plastic structure and method of forming the same are provided. The layers of the structure consist of a barrier layer comprised of an ethylene vinyl alcohol copolymer, an adhesive layer on each surface of the barrier layer, inner and outer surface layers, and a bulk layer positioned between the outer surface layer and its adjacent adhesive layers. The bulk layer is comprised of a thermoplastic polymer and calcium carbonate in an amount sufficient that the multilayer structure has an acceptable level of curling. The structure can be used to form a tubular body that has a cylindrical shape. A collapsible dispensing container having a body wall formed of the aforementioned structure and having improved product dispense properties is also provided.
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