Stock material or miscellaneous articles – Structurally defined web or sheet – Including fastener for attaching to external surface
Patent
1997-09-16
2000-05-09
Raimund, Christopher
Stock material or miscellaneous articles
Structurally defined web or sheet
Including fastener for attaching to external surface
428138, 24442, 2641731, 264257, 264260, 2642711, 264273, 264274, 264275, B32B 306, D01F 108
Patent
active
060601469
ABSTRACT:
First and second molten resins are continuously injected toward the respective circumferential surfaces of a die wheel and an associated roller in rotation in opposite directions. The die wheel has in its circumferential surface a multiplicity of engaging-element-forming cavities, and the associated roller is disposed in parallel confronting relationship with the die wheel with a gap equal to the thickness of a substrate sheet of a molded surface fastener member. During that time, a porous core sheet is introduced toward a meeting point of the first and second molten resins and is sandwiched between a first substrate sheet part, which is molded on the circumferential surface of the die wheel, and a second substrate sheet part, which is molded on the circumferential surface of the associated roller, to form a unitary laminate substrate sheet. The resulting molded surface fastener member is free from expansion and local thin portions in either substrate sheet part and is therefore prevented from being torn.
REFERENCES:
patent: 5643651 (1997-07-01), Murasaki
Akeno Mitsuru
Murasaki Ryuichi
Raimund Christopher
YKK Corporation
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