Method of preparing a porous structural unit

Details Method of preparing a porous structural unit Method of preparing a porous structural unit

1991-06-26

1992-09-01

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

264112, 264120, 264126, B29C 4320

Patent

active

051436647

ABSTRACT:
The present invention concerns a method of preparing a porous structural unit comprising a plurality of layers having different specific gravities by pressing and heating a material including resin particles between opposing molds having a temperature difference to thereby cause the fusion or bonding of the resin particles, and a porous structural unit which improves acoustic absorption properties and heat insulation properties and in which the specific gravity is continuously changed.

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