SU929757A1 - Weft-knitted textile - Google Patents

Description

(5) COOLED KNITTING

one

The invention relates to the production of knitwear, the manufacture of inextensible tricotting, in particular, intended to be used as a reinforcing framework for hoses.

Culinary knitwear is known, which includes rows of a curly surface made of a ground thread, weft threads located on the reverse side of the surface loops, and warp threads that are located between the hinge posts and secured on the reverse side with weft threads. Such a knit is characterized by the strength of fixing weft yarns on the warp threads at low densities in tl3. To increase the permeability, the distance between the weft yarns of the knitwear is increased, since the distance between the warp threads is determined by the design in the filling machine

undesirable because of the reduced strength of the hoses. For this, the lengths of the surface loops are increased. However, with an increase in the length of the loops, the weft yarn is completely free in the stitch row, and the fixation of the warp threads in the knitwear structure is significantly reduced. Therefore, under the influence of loads that are inevitable in the process of making knitwear, transport

10 and storage, as well as in the manufacture of hoses, there is a displacement of the warp threads and the surface loops along the weft threads to the center of the flat-folded tubular knit, as well as the displacement

15 weft threads and looped rows along the warp threads, which leads to a decrease in the hydraulic strength of the hoses.

The purpose of the invention is to improve the quality of weft knitwear.

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Claims (2)

The goal is achieved in that the weft yarns are laid in one row in a knit knit and the loop length in rows containing weft 392 threads is at least 1.05 times less than the loop length in rows that do not contain weft threads, moreover, the thickness of the weft yarn is at least 3 times greater than the thickness of the thread of the soil. The drawing shows a knit knit. The weft yarns 1 are laid through one looped loop, the lengths of the loops in odd rows 2 containing weft yarns are less than the lengths of the loops in even rows 3 not containing weft yarns, the weft yarns being compressed by the surrounding loops. The high permeability of such knitwear is ensured by considerable distances between weft yarns, i.e. greater loop length in even looped rows. The high shear stability of the yarns is due to the short loop length in odd rows for deforming the weft yarns and the warp and for firmly securing the knit fabric due to friction forces. The greater the difference between the lengths of the loops in odd and even rows, the higher the permeability. At the same time, the ratio of loops in even rows to lengths in odd numbers is more than 1.05, for example, 1.05-2, preferably 1.2-1.5, using smooth synthetic yarns. An increase in this ratio leads to an undesirable decrease in the tensile strength of the knit in the horizontal direction, with a constant linear density of the specified threads. The lengths of the loops in odd rows are so small that the weft yarns are deformed by loops at the contact points and fixed in a strip of knitwear (10 cm long) with a force of less than 0.8 kg, preferably not less than 1.2 kg. When securing the warp threads with force, the tricot has a sufficient stability of the structure so that the threads do not shift during its storage and sealing. The length of the loop in the rows containing weft yarns is inexpedient to be expressed in mm, since it depends not only on the depth of cooling, but also on the linear densities of the filaments of the soil, the substrate and the weave. However, it was found that the measure of its length, which shows the required depth of sublimation, is the clamping force of the warp and weave in a strip 10 cm long, whose definition is no more difficult to determine the length of the loop in mm. To further increase permeability, it is advisable that the difference in weft yarn and primer thicknesses be as large as possible. In the general case, the ratio of linear densities of weft yarn and soil is 3-50, but mainly 10-25, based on the strength of the soil yarn. Knitwear is made of textile yarns, mainly smooth synthetic yarns, for example, polyester and polyamide, on a single-loop circular sling machine equipped with devices for manufacturing (basic and weft yarns and having an even number of loop-forming systems. A needle is laid on a thread (in all systems and stitch it. And the inter needle spacing pads the main threads. Weft threads pave the main threads. Weft threads pave behind the backs of the needles through one looped row, for example, only in odd loops In odd-numbered systems, the depth of stitch of the soil filament is necessary to obtain a stitch series with a loop length so short that the named clamping force of the weft yarns and main threads is achieved, and then the depth of sting of the ground string in even-numbered systems is achieved so that the length of the loops in the row formed by this system is at least 1.5 times, preferably 2-2.5 times, more than even. Hoses made on the basis of Kulir knitwear have the necessary tightness and hydraulic strength. Claim 1. Culinary knitwear, which includes rows of a celular smooth of a thread of soil, weft threads and warp threads laid along them from the reverse side, located between the stitched columns of the smooth surface and fixed on the reverse side of the thread that, in order to improve its quality, weft yarns are laid through one looped row, and the loop length in rows containing weft yarns is at least 1.05 times less than the loop length in rows that do not contain weft yarns, 2. The crochet knitwear according to claim 1, about tl and h and y and with the fact that the thickness of the 929 757.6 weft yarn is at least 3 times greater than the thickness of the thread of the soil, Sources of information taken in attention during examination 1. USSR Author's Certificate No. 193010, cl. About 0 In I / I, 1967.