Memory molded, high strength polystyrene

Details Memory molded, high strength polystyrene Memory molded, high strength polystyrene

1996-01-11

1998-02-17

Yamnitzky, Marie

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428212, 4283044, 4283135, 4283166, 428516, 428523, 428909, 521 56, 521 58, 521146, 264 454, 264 51, 264113, 264120, 264126, 264294, 156242, 156245, B32B 532, B32B 702, B29D 900

Patent

active

057189684

ABSTRACT:
An expanded, memory molded, increased density, highly impact-resistant polystyrene construct, and method of making the construct. The construct is formed by molding pre-expanded non-equilibrated polystyrene beads to a first volume, cooling rapidly, and then compression molding to a final, smaller volume. The resultant constructs have increased density, and high impact strength without increase in embrittlement. Also, the construct has "memory" in the sense that it returns substantially to its original shape after impact.

REFERENCES:
patent: 2899708 (1959-08-01), Donaldson et al.
patent: 2986537 (1961-05-01), Chaumeton
patent: 3082483 (1963-03-01), Bickford
patent: 3264381 (1966-08-01), Stevens
patent: 3445406 (1969-05-01), Koch
patent: 3458608 (1969-07-01), Russell et al.
patent: 3459274 (1969-08-01), MacPhail, Sr.
patent: 3676033 (1972-07-01), Buonaiuto
patent: 3819544 (1974-06-01), Pillar et al.
patent: 3832429 (1974-08-01), Charpentier
patent: 3919370 (1975-11-01), Cotterell
patent: 3935044 (1976-01-01), Daly
patent: 3984511 (1976-10-01), Lammers
patent: 4399087 (1983-08-01), Akiyama et al.
patent: 4424180 (1984-01-01), Lalloz et al.
patent: 4581191 (1986-04-01), Hartmann
patent: 4698001 (1987-10-01), Vismara
patent: 4700411 (1987-10-01), Kawasaki et al.
patent: 4816199 (1989-03-01), Matz et al.
patent: 5056162 (1991-10-01), Tirums
patent: 5114656 (1992-05-01), Dionne et al.
patent: 5266396 (1993-11-01), Howard
patent: 5298208 (1994-03-01), Sibley et al.
patent: 5309576 (1994-05-01), Broersma
patent: 5324460 (1994-06-01), Briggs
patent: 5328345 (1994-07-01), Yamamoto et al.
patent: 5351342 (1994-10-01), Garneau
patent: 5385698 (1995-01-01), Bishop et al.
Computer Search #1, pp. 1-12, Computer Search #2, pp. 1-6, Computer Search #3, pp. 1-3, Computer Search #4, pp. 1-3, Computer Search #5, 1 page, all dated Oct. 3, 1995.

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