Embossed, inflatable ball making method

Details Embossed, inflatable ball making method Embossed, inflatable ball making method

1994-08-23

1996-02-27

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264293, 264321, 264510, 264574, 156147, 273 65ED, B29C 5902, B29D 2200

Patent

active

054946255

ABSTRACT:
The method includes the steps of i) molding an inner tube from butyl rubber, ii) processing the outer wall of the inner tube into a coarse surface; iii) preparing cover panels from ethylene vinyl acetate (EVA) through a foaming process and then processing the inside wall of each cover panel into a coarse surface; iv) covering the cover panels over the inner tube by a press to form a blank ball; and v) embossing the surface of the blank ball thus obtained by an embossing machine through a heating process and then quickly cooling the embossed ball.

REFERENCES:
patent: 2213479 (1940-09-01), Voit et al.
patent: 2819753 (1958-01-01), Nogue
patent: 4312827 (1982-01-01), Bokelmann
patent: 4462590 (1984-07-01), Mitchell
patent: 4598909 (1986-07-01), Ventura et al.
patent: 4653752 (1987-03-01), Miller
patent: 4660831 (1987-04-01), Kralik
patent: 5405469 (1995-04-01), Lin
patent: 5427372 (1995-06-01), Ratner et al.

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