发明名称 |
APPLICATION OF ZIPPERS TO FILM MATERIAL |
摘要 |
The apparatus applies a transverse zipper strip to a film (10) moving continuously in a direction (12). A continuous belt (18) is driven by sprocket wheels (16a, 16b) and carries upper seal bars (22a, 22b, 22c) which receive pre-cut lengths of zipper at station (3). The pre-cut lengths are attached to the film (10) by a lower seal bar (24) which moves towards the film (12) at position A when an upper seal bar carrying a zipper strip is located directly above the film. Sealing takes place as the upper and lower seal bars move at the same speed as the film (12) from position A to position B where the zipper is released from the upper seal bar (22c). The process then repeats for the next zipper strip length. |
申请公布号 |
CA2486845(C) |
申请公布日期 |
2010.10.26 |
申请号 |
CA20032486845 |
申请日期 |
2003.05.20 |
申请人 |
SUPREME PLASTICS HOLDINGS LIMITED |
发明人 |
LEIGHTON, MURRAY EDWARD BRUCE |
分类号 |
B31B19/90;B29C65/00;B29C65/18;B29C69/00 |
主分类号 |
B31B19/90 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|