Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1978-12-18
1980-12-09
Dixon, Jr., William R.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
264310, 264312, 273 60B, 273 61C, 273 58J, 273DIG4, 273DIG5, A63B 3902, B28B 146
Patent
active
042385377
ABSTRACT:
A rotationally molded hollow article and a process for molding such an article, wherein the article is formed of a mixture of plastic pellets and powder both of which are copolymers of ethylene and vinyl acetate, having a predetermined range of pellet to powder mixture ratio, and with such mixture having a predetermined melt index range, the article being characterized by having substantial "bounce" characteristics generally equivalent to those possessed by hollow, non-cellular articles made of known thermoplastic compositions or known rubber-like compositions of natural and/or synthetic polymers, as well as those possessed by solid cellular articles made from other known thermoplastics or from known rubber-like compositions of natural or synthetic polymers.
REFERENCES:
patent: 3246069 (1966-04-01), Maynord
patent: 3253068 (1966-05-01), Whittington
patent: 3432165 (1969-03-01), Haines et al.
patent: 3788792 (1974-01-01), Suzuki
patent: 3914361 (1975-10-01), Shiina et al.
patent: 4169594 (1979-10-01), Crane
Dixon Jr. William R.
The National Latex Products Company
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