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Mushroom-type hook strip for a mechanical fastener

DC
  • US 5,077,870 A
  • Filed: 09/21/1990
  • Issued: 01/07/1992
  • Est. Priority Date: 09/21/1990
  • Status: Expired due to Term
First Claim
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1. A mushroom-type hook strip that can be used in a hook-and-loop mechanical fastener, said strip comprising a homogeneous backing of thermoplastic resin and, integral with said backing, an array of upstanding stems distributed across at least one face of the backing, each of said stems having a base adjacent said backing and a mushroom head at the end of the stem opposite said backing, said stems having a molecular orientation as evidenced by a birefrigence value of at least 0.001.

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