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Improved method of sealing of thermoplastics straps.
申请公布号：EP0095002(A1)
申请号：EP19820303905
申请日期：1982.07.23
申请公布日期：1983.11.30
发明人：FORD, GRAHAM PAUL
分类号：B29C65/20;B65B13/32
主分类号：B29C65/20
摘要：Heat sealing apparatus for fusing together two layers (26, 28) of thermoplasics strap which have been looped and tensioned around a package, including cutting means for severing one strap layer and not the other, said cutting means comprising a heated knife edge which is operable against the backing of a heating element or separator plate or equivalent solid element which extends between the strap layers as part of a heating and fusing assembly which is used to heat and fuse the strap layers together. The severing action is synchronised with the heating and fusing process so that severing of the one strap is effected after heating and fusion has been completed and the heating current has been switched off.
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