BREATHABLE CONTAINER SEAL
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United States of America Patent
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app pub date -
Mar 14, 2013
filing date -
Jan 23, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A multi-layer seal material comprising a layer of paper or pulp, next to a layer of polymer, next to a layer of metal foil, next to a layer of adhesive polymer, the seal containing micro-holes allowing the seal to be breathable. A method of making a sealed container is also described by forming the multi-layer seal material described above, using laser drilling to generate the micro-holes in the seal material, placing the adhesive polymer layer of the multi-layer seal material onto a container filled with product material, heating the seal material to bond the seal to the container, thereby forming a product filled container having a breathable seal.
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