| 摘要 |
A coupling element of a slide fastener stringer has a pair of integral upper and lower coupling portions having different shapes and engagable with the lower and upper coupling portions of adjacent coupling elements on a co-operating like stringer. The upper coupling portion has a side surface including a flat abutment surface extending perpendicularly to a stringer tape across the thickness of a longitudinal edge portion of the stringer tape. When lateral pulling forces are applied to the coupled stringers, areas on the abutment surfaces of the interdigitating coupling elements take up such forces and prevent the stringers from separation. |
