发明名称 |
Heat Sealing Jaw, Apparatus and Method |
摘要 |
This invention relates to a method for sealing film layers to form a sealed portion and a notch within the sealed portion, comprising: providing film layers between sealing jaws comprising a heat sealing element, with a sealing face having a length and a protrusion extending partly along the length of its sealing face; inducing a temperature gradient along the of sealing face length, wherein the temperature proximate to the protrusion is higher than at a distance from the protrusion; closing the jaws and simultaneously clamping the film at a location adjacent to the sealing face; holding the jaws closed for a period of time; and opening the jaws to release the layers of film.
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申请公布号 |
US2012220439(A1) |
申请公布日期 |
2012.08.30 |
申请号 |
US201213396077 |
申请日期 |
2012.02.14 |
申请人 |
SADLER JAMES WILLIAM;LIN QIN;BIRD GORDON CHARLES;MCCARRON VICTOR WAYNE;LIQUI-BOX CORPORATION |
发明人 |
SADLER JAMES WILLIAM;LIN QIN;BIRD GORDON CHARLES;MCCARRON VICTOR WAYNE |
分类号 |
B31B1/14 |
主分类号 |
B31B1/14 |
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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