Process of making a water bed mattress

Details Process of making a water bed mattress Process of making a water bed mattress

1978-04-07

1979-09-11

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

219 1053, 219 1081, B29C 1904, B23K 1302, H05B 904

Patent

active

041674324

ABSTRACT:
In a water mattress, a series of interior bags or bladders are individually attached to the top and bottom layers in order to damp the movement of water. Each bag or bladder comprises a pair of disks peripherally heat sealed together. The disks are respectively heat sealed to the top and bottom layers. The improvement consists of a method of attachment of the bags or bladders to the top and bottom layers. A removable floating ring die is inserted between the companion disks. Large area dielectric plates close about the disks and ring die. Seals are achieved with very little distortion of the top and bottom mattress layers. The floating die is removed. The process is repeated until all the bags or bladders are attached. The strength of the top and bottom layers is not significantly impaired by the welding process, since no localized stress regions are created there. The hazard of leakage is largely eliminated.

REFERENCES:
patent: 2660660 (1953-11-01), Hauteville
patent: 2850422 (1958-09-01), Welch
patent: 2903543 (1959-09-01), Rueggeberg
patent: 2948929 (1960-08-01), Stallard

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