Method and apparatus for making a pile article and the products thereof
AssigneeE. I. Du Pont de Nemours and Company
InventorsDonald W. Edwards, James K. Odle, Peter Popper, Donald M. Sadler, Todd J. Savidge, Harold F. Staunton, William C. Walker, Paul W. Yngve
Life of this patent
Estimating the term…
Abstract
An elongated pile article having a support strand for attachment to a plurality of yarn bundles, the yarn bundles including a dense portion with the filaments bonded to each other and bonded to the support strand, pile surface structure comprised of a plurality of elongated pile articles placed one next to the other, and a method and apparatus for making the elongated pile article.
Claims7
A pile surface structure comprising:
- a backing substrate having a plurality of projections extending out from the surface with the projections terminating in overhanging portions, the projections disposed in an array on the substrate;
- a plurality of elongated pile articles, each comprising an elongated support strand having attached thereto a plurality of bundles of multifilament yarn, the bundles in the form of a "U" shape which is attached to the support strand at the base of the "U" shape, the bundle opposite the base defining a tuft;
- said elongated pile articles placed one next to the other in the array of projections with the support strand located between the projections and retained between the overhanging portions and the substrate with the base of the "U" shaped bundles adjacent the substrate, and the tuft extending beyond the overhanging portions;
- wherein the protrusions, the overhanging portions and the pile articles are deflectable relative to each other to permit passage of the support strand between the projections, to thereby form a pile surface defined by the tufts on the plurality of pile articles retained one next to the other.
A pile surface structure, comprising:
- a backing substrate;
- a plurality of elongated pile articles, each comprising an elongated support strand having attached thereto a plurality of bundles of multifilament yarn, the bundles in the form of a "U" shape which is attached to the support strand at the base of the "U" shape, the bundle opposite the base defining a tuft;
- said elongated pile articles placed one next to the other and attached to the backing substrate with the base of the "U" shaped bundles adjacent the substrate and the tuft extending away from the substrate;
- wherein the tufts adjacent their bases define a distribution of yarn comprising rows of abutted tufts in a direction aligned with the strand, with the rows spaced apart by distances defined by the width of the strand and the space between strands to thereby form a pile surface defined by the spaced rows of tufts on the plurality of pile articles attached one next to the other.
A support mandrel for filaments wrapped around a strand comprising:
- an elongated triangular body member having a central passage therethrough and a cap enclosing one end of said triangular body member said cap having guides aligned with at least one apex of said triangular body member for guiding the strand moving from said central passage along said apex.
A mandrel for attaching filaments to strands, comprising:
- an elongated body member;
- a passage through the length of said member;
- a plurality of ridges along the length of said member;
- and a guide surface along each of the ridges for guiding the strands.
Dependencies are inferred from the claim text.