Method of manufacturing a reusable fabric-covered heat-exchange bag
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United States of America Patent
Stats
-
Sep 3, 1991
Grant Date -
N/A
app pub date -
Dec 1, 1989
filing date -
Dec 1, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of producing a reusable, fabric-covered, heat exchange bag is provided which includes the steps of providing thermoplastic stock including waterproof film and a fabric-like material. The fabric-like material is folded along a fold line so as to contain a substantial portion of the waterproof film. This fold line represents a first edge of the reusable heat exchange bag whenthe bag is in a flattened condition. The waterproof film and the fabric-like material are heat sealed to form a closure with the fold line and to provide a tear initiation site for facilitating the severing of the reusable heat exchange bag from the thermoplastic stock.
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