Coextruded heat sealable laminar thermoplastic films
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United States of America Patent
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-
Apr 8, 1980
Issued Date -
N/A
app pub date -
Oct 26, 1978
filing date -
Nov 4, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Laminar thermoplastic films are provided which exhibit improved heat seal strengths as well as heat seal temperature ranges. The laminates comprise a predominantly propylene-based polymer substrate or core, the propylene core layer being coated with continuous skins, the skins being fabricated from ethylene based resin with a density of less than 0.939.
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