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US 6,837,274 B2Granted
Weaving machine and method for weaving fabrics with pile loops
AssigneeN.V. Michel Van de Wiele
InventorsJohny Debaes, Gilbert Moulin
Life of this patent
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AssigneeN.V. Michel Van de Wiele
InventorsJohny Debaes, Gilbert Moulin
Estimating the term…
A face-to-face weaving machine comprising upper (5) and lower spacers (6) for extending in the warp direction between two fabrics (12), (13) and a weft insertion device (2), (3), (4) for inserting weft yarns (22) between the spacers (5), (6), said spacers being carried out as a rigid element with a first (5c), (6c) and a second part (5B), (6B), the vertical intermediate distance between the first parts (5c), (6c) of the spacers (6) being shorter than said distance between the second parts (5B), (6B) such that the weft yarns (22) can be inserted between said second parts (5B), (6B). This invention also relates to a method for weaving pile loop fabrics, in which at least three weft yarns (14, 15, 22) are inserted above one another during successive weft insertion cycles on a face-to-face weaving machine, in which an upper (12) and a lower backing fabric (13) are woven, and loop weft yarns (22) are inserted between the two fabrics (12), (13) and are kept at a distance of the backing fabrics (12), (13), and in which pile warp yarns (23-28) form pile loops over loop weft yarns (22), so that two pile loop fabrics are woven, whereas pile warp yarns (23-28) are interlaced in the upper (12) and the lower backing fabric (13) alternately and are cut through between the two fabrics (12), (13), so that zones with a cut pile are obtained on the fabrics.
Method for weaving fabrics with pile loops, by means of which each time at least three weft yarns are inserted above one another at a respective insertion level on a face-to-face weaving machine during successive weft insertion cycles, an upper and a lower backing fabric being woven from respective backing warp yarns and backing weft yarns, first and second loop weft yarns being inserted between the two backing fabrics and kept at a distance of the two backing fabrics, the first pile warp yarns being interlaced in the upper backing fabric and forming a pile loop over at least one first loop weft yarn alternately, second pile warp yarns being interlaced in the lower backing fabric and forming a pile loop over at least one second loop weft yarn alternately, and the first and the second loop weft yarns being removed thereafter, so that two fabrics with pile loops are woven simultaneously, wherein a number of pile warp yarns are interlaced in the upper and in the lower backing fabric alternately and thereafter are cut through between the two backing fabrics, so that on both fabrics also at least one zone with a cut pile is obtained.
Fabrics with pile loops comprising at least one zone with a cut pile formed with insertion of at least three weft yarns each time above one another at a respective insertion level on a face-to-face weaving machine during successive weft insertion cycles, an upper and a lower backing fabric woven from respective backing warp yarns and backing weft yarns, first and second loop weft yarns being inserted between the two backing fabrics and kept at a distance of the two backing fabrics, the first pile warp yarns being interlaced in the upper backing fabric and forming a pile loop over at least one first loop weft yam alternately, the second pile warp yarns being interlaced in the lower backing fabric and forming a pile loop over at least one second loop weft yarn alternately, and the first and the second loop weft yarns being removed thereafter forming two fabrics with pile loops woven simultaneously, and a number of pile warp yarns interlaced in the upper and in the lower backing fabric alternately, thereafter being cut through between the two backing fabrics forming on both fabrics the at least one zone with the cut piles.
Dependencies are inferred from the claim text.