Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Patent
1995-12-20
1997-11-25
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Forming continuous work followed by cutting
264167, 26417716, 26417717, 425224, 425316, 425325, 425327, 4253781, 425471, B29C 4732, B29C 4790
Patent
active
056908750
ABSTRACT:
A high-quality molded surface fastener is manufactured by extruding molten thermoplastic resin, in a predetermined width, from an extrusion nozzle to a circumferential surface of a die wheel having a multiplicity of engaging-element-forming cavities, driving the die wheel for rotation, and molding a multiplicity of engaging elements integrally with a plate-like substrate sheet. At the same time, pseudo elements are molded integrally with the substrate sheet along opposite side edges, using pseudo-element-forming cavities in opposite side circumferential surfaces of the die wheel simultaneously. With the pseudo elements, the molded surface fastener is peeled off the die wheel under a uniform peeling force through the entire width of the substrate sheet. Thus the high-quality surface fastener can be obtained.
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Minato Tsuyoshi
Murasaki Ryuichi
Sakakibara Keisuke
Thurlow Jeffery R.
YKK Corporation
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