Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Of varying cross-sectional area or with intermittent...
Reexamination Certificate
2005-05-31
2005-05-31
Eashoo, Mark (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Of varying cross-sectional area or with intermittent...
C264S173100, C264S173160, C264S210100, C264S280000, C264S288800
Reexamination Certificate
active
06899841
ABSTRACT:
A running length of fastener product is formed of longitudinally pre-oriented synthetic resin. The product is characterized by a base web and an array of discrete fastener elements protruding from at least one side of the web, the web being in a laterally stretched molecular oriented condition. After forming a preform having discrete fastener elements integral with a base web in a stretchable state, the preform is stretched in a manner that substantially increases the fastener element spacing and reduces the thickness of the base web. A machine is shown that is capable of lengthwise orienting before forming and widthwise stretching after forming, which employs controlled heating to render the product widthwise stretchable while preserving or achieving a desired shape of the fastener elements. There are shown fastener products that include products that are laterally stretched to between two and ten times the width of the original preform fastener products, having lateral rip resistance due to molecular orientation of film form webs produced by stretching, applied to complex or extensive surfaces. Also shown are laminated products formed by joining an added material to the stretched web, and methods for laminating.
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Buzzell Keith G.
Maydra Richard G.
Provost George A.
Eashoo Mark
Velcro Industries B.V.
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