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AssigneeYKK Corporation
InventorsTakumi Mochizuki, Makoto Takekawa, Masayuki Naohara, Peng Li, Hiroyuki Yamashita
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A method of manufacturing a surface fastener includes a molding step of molding at least a base part by feeding molten synthetic resin from a feeding nozzle part to a die wheel that is rotating in one direction. The molding step includes molding the base part in a state where at least one of the feeding nozzle part and the die wheel has a temperature difference between at least two positions that are different in a cross direction, the temperature difference being produced by heating with a heater part. The method enables the manufacture of a surface fastener including a base part whose thickness is uniform or substantially uniform in the width direction and being less likely to have wavy wrinkles even after being wound onto a collecting roller.
A surface-fastener-manufacturing method of manufacturing a surface fastener that is made of synthetic resin, the surface fastener including a base part elongated in a machining direction and a plurality of engaging elements provided on the base part, the base part including a base central portion located in a central area in a cross direction that is orthogonal to the machining direction and a pair of base side-edge portions located at two respective end areas in the cross direction, the manufacturing method comprising:
A molding device to be used in manufacturing a surface fastener that is made of synthetic resin, the surface fastener including a base part elongated in a machining direction and a plurality of engaging elements provided on the base part, the base part including a base central portion located in a central area in a cross direction that is orthogonal to the machining direction and a pair of base side-edge portions located at two respective end areas in the cross direction, the molding device being configured to mold at least the base part and comprising:
Dependencies are inferred from the claim text.