Impact resistant high air retention bladders

Details Impact resistant high air retention bladders Impact resistant high air retention bladders

1984-04-17

1985-04-23

Lusignan, Michael R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

273 65B, 427379, 4273935, 4284235, 4284248, B05D 302, B32B 2740, A63B 4100

Patent

active

045130582

ABSTRACT:
The invention relates to methods of manufacturing bladders for footballs comprising (a) applying a thin layer of coating solution to a polyurethane film, said solution consisting of polyvinylidene, ethylene vinyl alcohol, polyamide polymers or vinylidene chloride copolymers, and organic solvents; (b) evaporating said solvents; (c) optionally repeating steps (a) and (b); (d) forming said coated film into a bladder. Said invention also relates to products of said methods.

REFERENCES:
patent: 4093219 (1978-06-01), Piraud
patent: 4119592 (1928-10-01), Murphy

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