发明名称 Method & apparatus for sealing fitment tubes into pouches
摘要 The present invention relates to a method of heat sealing fitment tubes to pouches or bags of flexible film using a pair of hot bars. Also disclosed is the use of warm bars or cold bars to cool the hot bar seal. An apparatus for producing pouches with fitment tubes sealed thereto as well as the pouches so produced is also disclosed.
申请公布号 US5484375(A) 申请公布日期 1996.01.16
申请号 US19940209129 申请日期 1994.03.11
申请人 W. R. GRACE & CO.-CONN. 发明人 OWENSBY, JOSEPH E.;MCDONALD, GREGORY E.
分类号 B31B1/84;B29C65/00;B29C65/18;B29C65/78;B65B51/32;(IPC1-7):B31B1/84;B31B49/04 主分类号 B31B1/84
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