Method of producing high-density PU foam material

Details Method of producing high-density PU foam material Method of producing high-density PU foam material

1985-07-24

1987-05-19

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

264 41, 264DIG7, 264DIG69, B32B 516, B32B 520

Patent

active

046666460

ABSTRACT:
The present invention relates to a method of producing high-density PU foam material, which is characterized by its process of using comminuted waste foam material, as its primary raw material which is then dried and filtered before mixing with other chemical agents in proportion, such as Voranol 3800 polyo, Isocyanate and relatively small amount of Catalysts to make the individual particle and also those agents between particles to swell to proper size in mold. Then, the yet foamed material is compressed in a mechanical way and cooled down slowly in natural manner to produce high-density PU foam material.

REFERENCES:
patent: 3354578 (1967-11-01), Ryan
patent: 3401128 (1968-09-01), Terry
patent: 3452122 (1969-06-01), Stern et al.
patent: 3517414 (1970-06-01), Carson, Jr.

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