Polyolefin layer with improved adhesion to a foamed plastic subs

Details Polyolefin layer with improved adhesion to a foamed plastic subs Polyolefin layer with improved adhesion to a foamed plastic subs

1981-08-31

1984-07-03

Anderson, Philip E.

Buoys, rafts, and aquatic devices

Water skimming or walking device

Surfboard

264 457, 264 466, 264267, 264310, 428 71, 4283184, 4283199, B29D 2704, A63C 1500, B32B 520, B32B

Patent

active

044577290

ABSTRACT:
A rotational molding process for manufacturing objects having a foamed plastic substrate adhered to an outer polyolefin coating layer, and having improved adhesion therebetween comprising the combination of steps of: preparing a first outer coating layer of a stabilized polyolefin; forming a second inner layer of an at most slightly stabilized polyolefin contiguous with and on the interior surface of said first outer layer; and thereafter introducing a foamable plastic material onto the interior surface of said second layer and foaming said plastic material thereagainst thereby the foamed plastic is bonded to said second interior surface.

REFERENCES:
patent: 2715075 (1955-08-01), Wolinski
patent: 3187069 (1965-06-01), Pincus et al.
patent: 3426110 (1969-02-01), Kesling
patent: 3527667 (1970-09-01), Larsen et al.
patent: 3607987 (1971-09-01), Walton et al.
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patent: 3923937 (1975-12-01), Piccioli et al.
patent: 3936565 (1976-02-01), Good
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patent: 4104335 (1978-08-01), Allen
patent: 4158686 (1979-06-01), Boeckmann
patent: 4167382 (1979-09-01), Freedman
patent: 4255221 (1981-03-01), Young
patent: 4307133 (1981-12-01), Haselier
35 Plastics Engineering, Oct. 1979, pp. 1, 47-49.
9 Encycl. Poly. Sci. Tech., pp. 1, 118-137 (1968).

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