发明授权
US5672308A Method and apparatus for forming seal portion of tubular body of
synthetic resin
失效
用于形成合成树脂管状体的密封部分的方法和装置
- 专利标题： Method and apparatus for forming seal portion of tubular body of synthetic resin
- 专利标题（中）： 用于形成合成树脂管状体的密封部分的方法和装置
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申请号： US553624申请日： 1996-01-03
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公开(公告)号： US5672308A公开(公告)日： 1997-09-30
- 发明人: Mamoru Fujita
- 申请人： Mamoru Fujita
- 申请人地址： JPX Tokyo
- 专利权人： Yoshino Kogyosho Co., Ltd.
- 当前专利权人： Yoshino Kogyosho Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX6-072048 19940411
- 主分类号： B29C57/10
- IPC分类号： B29C57/10 ; B29C65/14 ; B65B7/14 ; B29D23/20 ; B29C65/00
摘要：
An apparatus and method for forming a seal portion of a tubular body of synthetic resin is provided in which the seal portion has increased density and reduced foaming. The apparatus includes a pair of clamps that clamp an end portion of a tubular body of resin flat. A heater heats and fuses a projecting end portion projecting from the clamps. A bending member bends side projecting portions of the body formed during heating so that they are inwardly projecting. A press member presses the projecting end portion to form a seal portion.
公开/授权文献
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