Heat pack and process for the preparation of a heat pack

Details Heat pack and process for the preparation of a heat pack Heat pack and process for the preparation of a heat pack

1983-08-26

1985-07-23

Thibodeau, Paul J.

Stock material or miscellaneous articles

Sheet including cover or casing

Filled with gas other than air; or under vacuum

28107, 156250, 428 74, 428 75, 428174, 428219, 428284, 428300, 428484, B32B 506, B32B 3118

Patent

active

045308691

ABSTRACT:
A heat pack and a process for its preparation are described wherein the heat pack comprises an earth-like mass between two outer layers surrounding the mass and the two outer layers are joined together by means of holding fibers uniformly distributed over their entire surface area. The joining of the three layers may be effected by a needle bonding process known in the needle tufting process of the textile industry. Webs of the three-layer system needle bonded in this manner are cut into pieces according to their application, thereby forming the heat packs as such, and packaged into foil bags in which the heat packs may be stored and heated.

REFERENCES:
patent: 3122142 (1964-02-01), Crowe
patent: 3900651 (1975-08-01), Hoppe et al.
patent: 4205113 (1980-05-01), Hermansson et al.
patent: 4409271 (1983-10-01), Pehr

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