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US 2002/0162197 A1Published application
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
Life of this patent
Estimating the term…
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.
Claims252
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.
2 more elements
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a bundle break strength sbb and a stiffness s, and wherein the ratio rsbb/s=sbb/s is greater than 477.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a ratio rw/a defined by the equation
- rw/a=weight/area, wherein said fastener has a bundle break strength sbb, and wherein the ratio sbb/rw/a is greater than 0.057 (km/s)2.
2 more elements
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a bundle break strength sbb and a thickness t, and wherein the ratio rsbb/t=sbb/t is greater than 28 MN/m2.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a bundle break strength sbb and a flagging f, and wherein the ratio rsbb/f=sbb/f is greater than 7.4 MN/m2.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a tensile strength st and a stiffness s, and wherein the ratio rst/mf=st/s is greater than 392.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a ratio rw/a defined by the equation
- rw/a=weight/area, wherein said fastener has a tensile strength st, and wherein the ratio st/rw/a is greater than 0.058 (km/s)2.
2 more elements
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a tensile strength st and a thickness t, and wherein the ratio rst/t=st/t is greater than 28 MN/m2.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a tensile strength st and a flagging f, and wherein the ratio rst/f=st/f is greater than 6.2 MN/m2.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a normalized normalized tensile modulus of mt and a stiffness s, and wherein the ratio rmt/s=mt/s is at least about 11,000.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a ratio rw/a defined by the equation rw/a=weight/area, wherein said fastener has a normalized tensile modulus mt, and wherein the ratio mt/rw/a is greater than 0.46 (km/s)2.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a normalized tensile modulus mt and a thickness t, and wherein the ratio rmt/t=mt/t is greater than 0.2 GN/m2.
1 more element
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a tensile strength st and a flagging f, and wherein the ratio rst/f=st/f is greater than 48 MN/m2.
1 more element
An article, comprising:
- a fastener tape wound into a roll, said tape comprising (a) a polymeric substrate which is uniaxially oriented along the longitudinal axis of the tape, and (b) a plurality of hooks disposed on a first surface of said substrate.
A method for making a mechanical fastener, comprising the steps of:
- providing a first film;
- stretching the first film in a longitudinal direction to a first stretch ratio rx, thereby forming a longitudinally oriented film;
- stretching the longitudinally oriented film in a lateral direction to a second stretch ratio ry such that rx/ry is greater than 1, thereby forming a biaxially oriented film;
- and
- providing a plurality of hooks on a first surface of said biaxially oriented film and a plurality of loops on a second surface of said biaxially oriented film.
2 more elements
A fastener, comprising:
- a substrate;
- and
- a plurality of hooks disposed on a first surface of said substrate;
- wherein said fastener has a flagging of less than 3 mm.
1 more element
Dependencies are inferred from the claim text.