Method of making a ball having a foamed spherical center core, w

Details Method of making a ball having a foamed spherical center core, w Method of making a ball having a foamed spherical center core, w

1985-09-30

1987-06-23

Anderson, Philip

Metal working

Method of mechanical manufacture

Assembling or joining

264 451, 264 455, 264 54, 264129, 264321, 264DIG5, 264DIG83, B29C 6548, B29C 4516, C08J 906, C08J 934

Patent

active

046741704

ABSTRACT:
A method for making a ball having a cover and a core, which core has a spherical center and a winding, is disclosed. The ball is made by foam injection molding a thermoplastic resin comprising a mixture of at least about 45% of a copolymer of at least one olefin with at least one unsaturated monocarboxylic acid to form a spherical partially blown center. The center is then wound to form a wound core which is immersed in an adhesive which impregnates the yarn. The wound core is then dried and ironed the melt the surface of the center so as to fuse the windings to the center. A cover is then applied to the core to form the completed ball.

REFERENCES:
patent: 709411 (1902-09-01), Kempshall
patent: 713769 (1902-11-01), Kempshall
patent: 2175685 (1939-10-01), Dieterich
patent: 3264272 (1966-08-01), Rees
patent: 3421766 (1969-01-01), Camiel et al.
patent: 4211407 (1980-07-01), Tomar
patent: 4364565 (1982-12-01), Tomar
patent: 4367873 (1983-01-01), Chang et al.

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