Multilayer sheet and package body made from the multilayer sheet for packaging food, medicine or tool
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United States of America Patent
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Issued Date -
Jan 19, 2006
app pub date -
Nov 14, 2002
filing date -
Nov 14, 2002
priority date (Note) -
Abandoned
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Abstract
A multilayer sheet harmless to human beings, having a certain gas-barrier property, and comprising an easily-produced metal film layer and a packaging material made of the multilayer sheet. The multilayer sheet is composed of at least a resin film layer and a metal film layer of magnesium or a magnesium alloy integrally formed on the resin film layer by evaporation, electron beam, or sputtering. Magnesium is harmless to human beings, and therefore such a multilayer sheet can be preferably used as a material of a food or medicine bag.
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