发明名称 |
MUSHROOM-TYPE HOOK STRIP FOR A MECHANICAL FASTENER |
摘要 |
A mushroom-type hook strip for a hook-and-loop fastener has a flexible backing of thermoplastic resin and, is integral with backing, an array of upstanding stems distributed across at least one face of the backing, each having a mushroom head. The stems have a molecular orientation as evidenced by a birefringence value of at least 0.001. The mushroom-type hook strip can be produced continuously by injecting resin into cavities of a cylindrical mold while evacuating and cooling the cavities so that the cooled resin becomes molecularly oriented, thus affording to the stems excellent stiffness, durability, and tensile and flexural strength. |
申请公布号 |
WO9204839(A3) |
申请公布日期 |
1992.05.14 |
申请号 |
WO1991US05874 |
申请日期 |
1991.08.19 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
MELBYE, WILLIAM, L.;NESTEGARD, SUSAN, K.;WOOD, LEIGH, E.;LINDSETH, MARVIN, D.;BYCHINSKI, DALE, A. |
分类号 |
A44B18/00;B29C59/02;B29C67/00 |
主分类号 |
A44B18/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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