subject: Stop device for upper stops and a pull of a nylon zipper [print this page] After the positioning holes are formed, the strain can be removed when the thermal setting plastics is formed. Thereby, the strains due to the material and temperature differences of the zipper strip are released and the plastic stops can be released. The design of the positioning holes is not used in the prior art.
Stop device for upper stops and a pull of a nylon zipper
