Method of making electric blanket shell

Details Method of making electric blanket shell Method of making electric blanket shell

1976-02-13

1978-01-24

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156148, 156290, 156306, 156309, 428 91, 428198, 428300, 219212, B32B 506, B32B 3116, B32B 3128

Patent

active

040702170

ABSTRACT:
An electric blanket shell is composed of first and second-needled textile fabrics with a yarn layer disposed in at least one of the needled fabrics. The yarn layer has a plurality of first planar yarns extending generally in a first planar direction. A heat-fusible component is disposed in at least one of the needled fabrics. A plurality of small, discrete sonically or ultra-sonically-produced fusion bonds, spaced from each other, link the needled fabrics to form a blanket shell. The fusion bonds form a series of patterns across a planar dimension of the blanket shell and the patterns define a series of channels, for receiving heating wires, between the needled fabrics. The patterns of fusion bonds are disposed in a direction traverse to the direction of the first planar yarns. The fusion bonds of any one pattern do not engage more than about 50% of the first planar yarns and overlaps of fusion-bond patterns are substantially avoided.

REFERENCES:
patent: 3214819 (1965-11-01), Guerin
patent: 3324609 (1967-06-01), Stein et al.
patent: 3336173 (1967-08-01), Renfroe
patent: 3548147 (1970-12-01), Owers
patent: 3649429 (1972-03-01), Hughes
patent: 3924040 (1975-12-01), Addie et al.

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