发明名称 |
Method of manufacturing multi-layer game ball |
摘要 |
A process for producing multi-layer game ball products includes the steps of extruding an inner layer precursor as a parison in a partial melt state, forming an outer layer, introducing the inner and outer layers into a mold and expanding the parison within the mold to form the multilayer game ball product. The outer layer may take the form of pre-cut panels vacuum supported in the mold and an intermediate layer may be provided for dimensional stability in the product. Subsequent to expanding the parison a filler such as foam may be injected into the center space for forming a core.
|
申请公布号 |
US2001038158(A1) |
申请公布日期 |
2001.11.08 |
申请号 |
US20010894610 |
申请日期 |
2001.06.28 |
申请人 |
SPALDING SPORTS WORLDWIDE, INC. |
发明人 |
KENNEDY THOMAS J. |
分类号 |
A63B37/02;A63B41/00;A63B43/00;A63B45/00;B29C49/04;B29C49/20;B29C49/22;B29C49/24;B29C67/20;B29L31/54;(IPC1-7):B29C49/20 |
主分类号 |
A63B37/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|