Needling loops into carrier sheets
First Claim
1. A method of forming a loop product, the method comprisingintroducing a sheet-form substrate and a layer of polymeric fibers into a needle loom, with the fibers disposed on a first surface of the substrate;
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Accused Products
Abstract
Methods of forming a loop product are provided. Some methods include (a) introducing a sheet-form substrate and a layer of polymeric fibers into a needle loom, with the fibers disposed on a first surface of the substrate, and (b) needling the fibers through the substrate to form hook-engageable loop structures of the fibers extending from a second surface of the substrate through holes formed in the substrate by the needling. Needling the fibers includes piercing the substrate with a plurality of needles while advancing the substrate in a machine direction at a predetermined speed, while cyclically advancing the needles in the machine direction, during piercing of the substrate, in a manner that causes the needles to travel in a substantially elliptical path, such that while the needles extend through the substrate the needles are moving in the machine direction.
188 Citations
25 Claims
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1. A method of forming a loop product, the method comprising
introducing a sheet-form substrate and a layer of polymeric fibers into a needle loom, with the fibers disposed on a first surface of the substrate; - and
needling the fibers through the substrate to form hook-engageable loop structures of the fibers extending from a second surface of the substrate through holes formed in the substrate by the needling, wherein needling the fibers includes piercing the substrate with a plurality of needles while advancing the substrate in a machine direction at a predetermined speed, the needles being configured to form the hook-engageable loop structures, while cyclically advancing the needles in the machine direction, during piercing of the substrate, in a manner that causes the needles to travel in a substantially elliptical path, such that while the needles extend through the substrate the needles are moving in the machine direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of forming a loop product, the method comprising
introducing a sheet-form substrate and a layer of polymeric fibers into a needle loom, with the fibers disposed on a first surface of the substrate; -
supporting the substrate on a support selected from the group consisting of a bristle bed, a flat lammela bed, or a stack of lammela disks; and needling the fibers through the substrate into the support from only one direction, using a random velouring process, to form hook-engageable loop structures of the fibers extending from a second surface of the substrate through holes formed in the substrate by the needling, wherein needling the fibers includes piercing the substrate with a plurality of needles configured to form the hook-engageable loop structures while advancing the substrate in a machine direction at a predetermined speed, while cyclically advancing the needles in the machine direction, during piercing of the substrate, in a manner that causes the needles to travel in a substantially elliptical path, such that while the needles extend through the substrate the needles are moving in the machine direction.
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Specification