Method and apparatus for making a pile article and the products thereof
AssigneeE. I. Du Pont de Nemours and Company
InventorsAhmed M. Mokhtar, Peter Popper, Wiliam C. Walker
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.
Claims11
An elongated pile article comprising a plurality of bundles of filaments attached to an elongated support strand wherein each bundle is in the form of a pair of loops, with one of the pair bonded on each side of the strand.
A method of making an elongated loop pile article, comprising:
- contacting an elongated support strand with a plurality of bundles of filaments, wherein each bundle comprises a pair of loops with one on each side of the strand;
- bending said bundles over the strand;
- bonding said filaments of each bundle where they contact the strand to form a dense portion in the bundle that has the filaments bonded together and to the strand.
A method for making an elongated pile article, comprising:
- feeding a continuous length of a bundle of filaments under tension to an eccentric guide;
- rotating said eccentric guide to wrap said bundle of filaments around a fork to form loops of said bundles with said fork having a plurality of prongs having one end free of support;
- positioning the prongs on the sides of a hollow mandrel having an elongated ridge on the mandrel between the prongs;
- feeding a carrier strand for said loops through the hollow portion of said mandrel and guiding the carrier strand along said ridge between said loops and said stationary hollow mandrel, said carrier strands may be said support strand when said support strand is placed between said loops and said stationary mandrel;
- transporting said loops under a bonding means aligned with the ridge and said support strand by propelling said carrier strands along said ridge of said stationary mandrel;
- bending the loops over the ridge;
- bonding the filaments in the bundle to each other and to the strand while bent over the ridge to form a loop pile, elongated pile article;
- forwarding the bonded loops off the free end of the prongs;
- and
- forwarding the elongated pile article off the mandrel.
Dependencies are inferred from the claim text.