RU2208670C1 - Combined weaving fabric - Google Patents

Abstract

FIELD: textile industry. SUBSTANCE: fabric comprises warp and weft threads arranged in groups with dense and open-weave warp and weft strips made by repeat weft weaving of no more than 8 threads. At least four weft threads are involved in dense and open-weave strip. Ratio of densities of weft thread arrangement in dense and open-weave strips provides for whole number of weft threads in dense strip without considering the process of withdrawal of strip from forming zone. Fabric of such structure may be used for manufacture of blouses, shirts, linen and child's articles. EFFECT: improved consumer properties by providing definite boundaries between dense and open-weave weft strips. 1 dwg, 1 ex

Description

 The invention relates to the production of textile materials, in particular to the manufacture of fabrics blouse, shirts, underwear and children's assortment.

 Known fabric of combined weaving [1], containing the main and weft yarns located in groups with densified and sparse strips on the base and weft, having in separate stripes along the warp at least two types of weaves. The presence of different weaves in the densified and sparse strips of fabric provides equal distances between the extreme threads of these strips, that is, the sharpness of the boundaries between the densified and sparse strips. The connectivity coefficient of the weft-compacted strip is 3.6.

 The disadvantage of this fabric is the relatively low consumer properties due to the reduced service life due to the loose structure, reduced density and low coefficient of cohesion of the compacted strip in the weft, which negatively affects the tensile load of the fabric in the warp and in the weft.

 The combined weave fabric [2] containing the main and weft yarns located in groups with densified and sparse strips along the warp and weft, made by weaving with rapport in the weft of not more than 8 threads, the number of weft threads in the sealed and sparse strips is not less than four.

When the density of the weft threads in the compacted strip P _уу = 500 threads / dm, in the rarefied strip P _ur = 200 threads / dm, the cohesion coefficient of the compacted strip in the weft is 8.5.

где N_уу - количество нитей утка в уплотненной полосе ткани.The disadvantage of this fabric is that the boundaries between the densified and rarefied stripes are not clear when the coefficient is chosen incorrectly, taking into account the ratio of the densities of the weft threads in the densified and rarefied tissue bands (K _p = P _yy / P _ur ). The sharpness of the boundaries is estimated by the number of weft threads in the compacted strip of fabric without taking into account the process of its removal from the formation zone (N _{у у (з)} ), determined by the formula:

where N _yy is the number of weft threads in the compacted strip of fabric.

The clarity of the boundaries is optimal if the value of N _{yy (s)} takes an integer value. Otherwise, the blurriness of the boundary between the densified and rarefied strips is observed. For a given fabric, _p = 2.5, and for N _yy = 10 strands, the value of N _{yy (s)} = 6.4 strands, which shows the fuzzy boundaries between the strips.

 The technical result of the invention is to improve the consumer properties of the fabric by ensuring the clarity of the boundaries between the compacted and rarefied strips of weft. The technical result is achieved in that in a combined weave fabric containing warp and weft yarns arranged in groups with densified and sparse strips along the warp and weft, made by weaving with rapport on the weft of not more than 8 threads, the number of weft threads in the sealed and sparse stripes is not less than four, according to the invention, the ratio of the density of the weft threads in the sealed and rarefied strips provides an integer number of weft threads in the sealed strip without taking into account the process of its removal from the zone of Framing.

 The invention is illustrated in the drawing, which shows an abbreviated based on the weaving pattern of the proposed combination fabric.

 Example. The combined weave fabric was developed on the basis and on the weft of cotton yarn of the pneumomechanical spinning method with a linear density of 18.5 tex. The fabric pattern at the base is alternating compacted A, B, C, E and sparse D, F stripes. The strips densified on the basis are formed by the following weaves: stripe A — weft halfreps 3/1; lane B - satin 5/2; lane C - weft halfreps 1/3; lane E - weft half-rips 1/3, linen, weft half-rips 3/1.

 Stripes D and F, sparse on the basis, are formed by plain weaving.

The number of warp threads in the i-th strip is determined by the formula:
M _oi = n _oi • R _obi , (2)
where R _obi - rapport based on weaving in the i-th strip;
n _oi is the number of repetitions of R _obi in the i-th band.

Sealed and sparse strips on the basis contain the following number of warp threads:
lane A: M _oA = 1 • 4 = 4 strands;
lane B: M _oV = 1 • 4 + 4 • 5 = 24 threads;
lane C: M _{° C} = 1 • 4 = 4 strands;
lane D: М _оD = 7 • 2 = 14 threads;
lane E: M _oE = 1 • 10 = 10 threads;
lane F: M _оF = 7 • 2 = 14 threads.

 In addition, bands E and F alternate 3 times in the repeat of the fabric pattern.

The general rapport of the fabric pattern on the basis is:
M _oz = M _oA + M _oV + M _oC + M _oD + 3 • (M _oE + M _oF ) = 4 + 24 + 4 + 14 + 3 • (10 + 14) = 118 threads.

The weft fabric pattern is alternating, compacted I and sparse II strips. The densified I strip contains 10 weft threads, and the rarefied II strip contains 26 weft threads. The density of the weft fabric in the densified I band is P _уу = 501 threads / dm, in the rarefied II band P _ur = 167 threads / dm (k _p = 3).

 The cohesion coefficient of the compacted I strip in the weft is 8.5.

.The number of weft threads in the compacted strip of fabric without taking into account the process of its removal from the formation zone:

.

 Thus, between the compacted and rarefied strip in comparison with the prototype is the optimal sharpness of the border.

Sources of information
1. Borodin A.I. and others. Refueling calculations of harsh fabrics. Directory. M.: Light Industry, 1969, p. 383.

 2. Patent 2040605 of the Russian Federation, D 03 D 15/00. Combination weave fabric. / Erokhin Yu.F., Sinitsyn V.A., Kareva T.Yu., Bykov M.Yu., Speranskaya T.F., Stepanov G.V. (Russia). - Publ. 1995, Bull. 21.

Claims (1)

 Combined weaving fabric containing warp and weft yarns arranged in groups with densified and sparse strips along the warp and weft made by weaving with rapport on the weft of not more than 8 threads, the number of weft threads in the sealed and sparse stripes of at least four, characterized in that the ratio the density of the location of the weft threads in the sealed and rarefied strips provides an integer number of weft threads in the sealed strip without taking into account the process of its removal from the formation zone.