B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 5/00 (2006.01) A44B 18/00 (2006.01) B29C 43/22 (2006.01)
Patent
CA 2100025
A surface fastener engaging member manufactur- ing method comprises: extruding from an extrusion nozzle a predetermined width of molten resin; intro- ducing the molten resin, which is extruded from the extrusion nozzle, into a predetermined gap between the extrusion nozzle and a die wheel, which has a multi- plicity of coupling element molding cavities on its circumferential surface and a cooling unit inside, to fill up the coupling element molding cavities with the molten resin as the die wheel rotates in one direc- tion; continuously molding a multiplicity of coupling elements integrally on the front surface of a con- tinuous board-shaped base layer as the die wheel is rotated in such a direction as to extrude the molten resin; applying a porous backing material, which is supplied separately from the molten resin and ad- jacently to the extrusion nozzle while being heated, to the board-shaped base layer under pressure while the board-shaped base layer is moved in response to the rotation of the die wheel; cooling the die wheel to a predetermined temperature; and positively pulling a resulting engaging section, which includes the board-shaped base layer with the backing material at- tached thereto as cooled, from the die wheel in the molten resin extruding direction as the molded coup- ling elements of the engaging section are removed off the coupling element molding cavities.
Murasaki Ryuichi
Nishiyama Hissai
Gowling Lafleur Henderson Llp
Ykk Corporation
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