| 摘要 |
A method of making an end stop for a slider of a fastener structure for a thermoplastic bag. The fastener structure comprises a pair of flexible plastic strips adapted to be connected to the walls of the bag (B) and having reclosable interlocking male and female profile elements (16,17) on the respective strips (14,15) and a slider (10) straddling the strips for opening and closing them. The method comprises clamping together a pair of the flexible plastic strips between clamps (40,41) at a seal area in the region intended to form an end of the strips, the clamps (40a,40b) having pockets (41a,41b) therein adjacent the profile elements at the seal area. The profile elements are severed and heated at the seal area with a heated knife (45) to transform the severed ends of the profile elements into molten material; the molten material is pressed into the pockets in the clamps (40,41) with the heated knife (45) thereby increasing the thickness of an area of the strips adjacent the seal area to provide a protruding end stop for preventing movement of the slider past the ends of the bag (30). <IMAGE> |
