Particle filled self-conformable cushion and method of making sa

Details Particle filled self-conformable cushion and method of making sa Particle filled self-conformable cushion and method of making sa

1971-12-06

1976-07-27

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

264126, 264248, D04H 154, B29C 602

Patent

active

039718395

ABSTRACT:
A quantity of discrete particles of thermo-meltable material are heated to melt those particles at the surface of the charge for a predetermined distance inwardly of the charge. The particles remote from the surface of the charge remain in original and unmelted condition. While the melted particles are in a melted condition molding pressure is applied to the exterior of the charge to shape the melted material into a covering encapsulating, at least in part, the unmelted particles. In a further embodiment the particles remote from the surface of the charge may under heat and pressure be superficially tacked together.

REFERENCES:
patent: 2878153 (1959-03-01), Hacklander
patent: 3048537 (1962-08-01), Pall et al.
patent: 3244783 (1966-04-01), Eissfeldt et al.
Chemical Engineering, vol. 69, June 11, 1962, p. 207.

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