发明名称 |
APPARATUS FOR SHAPING COILED SLIDE FASTENER COUPLING ELEMENTS |
摘要 |
A coupling element shaper comprises a pair of parallel externally threaded screw members corotatable in a common direction and disposed on opposite sides of a mandrel along which a core thread is fed while a filamentary material is wound around the mandrel into a row of helically coiled coupling elements. Each screw member has a portion varying in pitch to gradually reduce in a direction from one end to the opposite end thereof. The core thread is squeezed by the coupling elements as shaped by such portion so as to have a certain degree of stretchability which can cancel or take out its shrinkage when the coupling elements are sewn to a slide fastener stringer tape. |
申请公布号 |
DE3360462(D1) |
申请公布日期 |
1985.09.05 |
申请号 |
DE19833360462 |
申请日期 |
1983.04.12 |
申请人 |
YOSHIDA KOGYO K.K. |
发明人 |
MIZUHARA, HISAYOSHI;OMORI, SHIGENORI;TANAKA, AKIRA |
分类号 |
A44B19/12;A44B19/42;B21F45/18;B29D5/06;(IPC1-7):A44B19/12 |
主分类号 |
A44B19/12 |
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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