发明名称 |
Embossed, inflatable ball making method |
摘要 |
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.
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申请公布号 |
US5494625(A) |
申请公布日期 |
1996.02.27 |
申请号 |
US19940294707 |
申请日期 |
1994.08.23 |
申请人 |
HU, LIANG F. |
发明人 |
HU, LIANG F. |
分类号 |
A63B41/10;A63B45/00;B29C59/02;B29D22/02;(IPC1-7):B29C59/02;B29D22/00 |
主分类号 |
A63B41/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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