Energy absorber

Details Energy absorber Energy absorber

1986-01-30

1987-04-14

Van Balen, William J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

428357, 428402, 521 58, 521 59, 521 60, 521139, C08J 918, C08J 922, C08J 924, B32B 326

Patent

active

046579370

ABSTRACT:
An energy absorber suitable for use as a bumper core or the like is formed of an expansion-molded article of prefoamed particles. The prefoamed particles use, as the base resin thereof, a resin obtained by impregnating high-density polyethylene with an aromatic vinyl monomer and polymerizing the monomer. The absorber has a density (.rho.) of 0.015-0.15 g/cm.sup.3 and satisfies the following relation:

REFERENCES:
patent: 4168353 (1979-09-01), Kitamori
patent: 4399087 (1983-08-01), Akiyama et al.
patent: 4443393 (1984-04-01), Akiyama et al.
patent: 4464484 (1984-08-01), Yoshimura et al.
patent: 4504534 (1985-03-01), Adachi et al.
patent: 4525486 (1985-06-01), Kobayashi et al.
patent: 4600636 (1986-07-01), Yoshimura et al.

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