发明名称 |
BAG SEALING SYSTEM AND METHOD |
摘要 |
A system for sealing thermoplastic film includes one or more bag sealing units, each comprising a lower vacuum platen and a vacuum chamber cover adapted for sealing engagement on the platen to form a vacuum chamber. A sealing bar assembly includes a sealing bar designed for constant heated operation and a pair of cooling plates which function as heat sinks. The sealing bar assembly is pneumatically reciprocated between a raised, disengaged position and a lowered position with the sealing bar engaging the neck of a bag for hermetically sealing same. The cooling plates clamp the ba g neck against a sealing support assembly. A method of sealing a thermoplastic film bag includes the steps of placing a packaging object in a thermoplastic bag and placing the bag on a cradle with the bag neck extending over a bag support assembly. A. vacuum chamber cover is placed on the platen and evacuated to form a vacuum chamber. A sealing bar assembly melds the thermoplastic to form a sealed area across the bag neck. A cutoff knife blad e severs the end of the bag beyond a sealed area, which extends across its nec k. |
申请公布号 |
CA2528780(C) |
申请公布日期 |
2008.11.18 |
申请号 |
CA20042528780 |
申请日期 |
2004.01.13 |
申请人 |
PACK-TECH, L.L.C. |
发明人 |
BALEK, THEODORE A.;CADY, DERRIL R.;TAYLOR, MARK W., SR. |
分类号 |
B65B31/02;B29C65/00;B29C65/18;B29C65/74;B65B31/00 |
主分类号 |
B65B31/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|