Double bag vacuum insulation panel for stream chest molding
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United States of America Patent
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May 7, 2019
Grant Date -
Aug 10, 2017
app pub date -
Apr 28, 2017
filing date -
Aug 5, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A double bag vacuum insulation panel for use in a temperature assured shipper made in a steam chest molding machine is provided. The double bag VIP comprises a porous core, a heat sealable inner envelope and an outer bag. The inner envelope is made from a substantially gas impermeable first material having a first thickness and defines an interior having a pressure of less than or equal to about 30 millibar. The outer bag is made from a substantially gas impermeable second material having a second thickness. The outer bag encapsulates the inner envelope. The double bag vacuum insulation panel has an R value of at least about 28 hr-ft2-° F./BTU-in and the R value drops less than about 10% after being exposed to a temperature of up to 95 degrees C. for up to 7 seconds.
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