| 摘要 |
A method for 3-D engagement of a fastener, in which fastener teeth of two fastener strips received in different height-level within slider can be engaged together in the same plan by the siding action of slider. The present invention also discloses a separate-type fastener enabling 3-D engagement, comprising first and second fastener strip each of which has a plurality of equi-distance fastener teeth alternately arranged on each of two opposed long substrates respectively so that a plurality of projecting portions and recesses with corresponding shape, which can engage with the recesses and projecting portions of opposite strip, are formed on the side edge walls of fastener teeth on each of first and second fastener strips respectively, a slider having front and rear end wherein inlet ports at high-level and low-level are formed respectively at different heights of the front end. These inlet ports extend along a central plan at rear end and merge at this common central plan, a common outlet port being formed at the rear end of said slider. After one end of each of the first and second strip is passing respectively through the inlet port at high-level and low-level, fastener teeth on each of first and second fastener strip passing through outlet port can be meshed on the same plan by the sliding action of said slider. |
