发明名称 |
NACHGEFORMTE KÖPFE AUF VERSCHLUSSELEMENTEN |
摘要 |
A method and apparatus of producing a fastener product having a multiplicity of fastening members with stems integrally molded with a strip-form base, along with a product and a preform product so produced. Molten resin is applied to a rotating mold roll having an outer surface for forming one side of the base, and a multiplicity of cavities extending inward from the outer surface for molding the stems. A preform product is stripped from the mold roll having a multiplicity of upstanding, preform stems extending from a side of the base. The preform product is passed through a post-forming nip between a heading roll and a backing member to form overhanging heads at the distal ends of the upstanding stems. The heading roll has a multiplicity of cavities about its periphery for forming the heads. Various means are disclosed for aligning the preform stems and the heading roll cavities. In another embodiment, a dimpled, heated heading roll is employed to post-form the stems to form fastener elements that extend in random directions. |
申请公布号 |
DE69827297(D1) |
申请公布日期 |
2004.12.02 |
申请号 |
DE1998627297 |
申请日期 |
1998.08.21 |
申请人 |
VELCRO INDUSTRIES B.V., CURACAO |
发明人 |
BUZZELL, G.;PROVOST, A.;DOWD, CLINTON |
分类号 |
A44B18/00;B29C51/22;B29C67/00;(IPC1-7):B29C51/02;B32B3/06 |
主分类号 |
A44B18/00 |
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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