LAMINATE FOR PACKAGING HYGROSCOPIC MATERIALS, POUCHES MADE THEREFROM, AND METHOD FOR MANUFACTURING SAME
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United States of America Patent
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Issued Date -
Aug 16, 2012
app pub date -
Feb 14, 2011
filing date -
Feb 14, 2011
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Abandoned
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Abstract
The present invention provides a novel packaging laminate designed particularly for packaging highly hygroscopic, pelleted, flowable materials. It is a multilayer structure which incorporates a layer of heat-sealable polymeric material which has had a thin film of aluminum deposited onto it by vapour coating. This layer combined with a further effective barrier layer provides the low WVTR in the range required by such highly hygroscopic materials. This laminate can be used with additional structural layers of paper or plastic, to form bags that have the features of very low WVTR, excellent puncture resistance, and excellent heat sealability.
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