Forming discrete regions of molten resin
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United States of America Patent
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Jul 17, 2007
Grant Date -
Dec 22, 2005
app pub date -
Jun 16, 2004
filing date -
Jun 16, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for producing a fastener product having a multiplicity of fastener elements extending from a sheet-form material. Molten resin is extruded through an extrusion nozzle and gas is introduced into the resin within the extruder to provide an interrupted flow of resin from the nozzle to deposit discrete regions of molten resin onto the sheet-form material. The discrete regions of molten resin are spread apart along a longitudinal direction of the sheet-form material. The molten resin is permanently bonded to the sheet-form material, and a multiplicity of fastener elements are molded from each discrete region of resin.
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