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US 6,484,371 B1Granted
High strength, flexible, light weight hook and loop bundling straps
Assignee3M Innovative Properties Company
InventorsWalter R. Romanko, Hang N. Tran, Ronald W. Ausen, Curtis L. Larson, William C. Unruh, Michael W. Mills, Kirit C. Mody
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Abstract
A mechanical fastener is provided which is lightweight, thin, flexible, and strong, and whose holding power is as great as, or greater than, the holding power of conventional hook and loop type fasteners.
Claims37
A fastener, comprising:
- a uniaxially oriented polymeric substrate;
- a plurality of hooks disposed on a first side of said substrate;
- and
- a plurality of loops disposed on a second side of said substrate;
- wherein said fastener has a longitudinal axis, and wherein said substrate is oriented along said longitudinal axis, wherein
- a) said fastener has a ratio rw/a defined by the equation rw/a=weight/area, wherein said fastener has a bundle break sbb, and wherein the ratio sbb/rw/s is greater than 0.09 (km/s)2,
- b) said fastener has a ratio rw/a defined by the equation rw/a=weight/area, wherein said fastener has a normalized tensile modulus of mt, and wherein the ratio mt/rw/a is greater than 0.85 (km/s)2,
- c) said fastener has a stiffness s, and wherein the ratio sbb/s is greater than 770,
- d) said fastener has a tensile strength st, and wherein the ratio rst/s=st/s is greater than 600, and
- e) wherein the ratio rmt/s=mt/s is greater than 11,000.
7 more elements
Dependencies are inferred from the claim text.