Large size thermal bag and a method of manufacturing the same

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United States of America Patent

PATENT NO 11345536
APP PUB NO 20210032008A1
SERIAL NO

16655233

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Abstract

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A manufacturing method of a large size thermal bag, having the steps of a) manufacturing a cover which includes an outer cover and an inner cover; b) manufacturing an inner bag; c) manufacturing an outer bag; d) disposing a layer of insulation material between the inner bag and the outer bag; e) welding the inner bag to a lower surface of the outer cover. Also provided is the large size thermal bag having an inwardly recessed cavity.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Luo, Binghua Fujian, CN 7 107

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