SU1392162A1 - Elastic cord for diversъ suits and method of producing same - Google Patents

Abstract

This invention relates to the knitwear industry and allows for improved yarn performance. The elastic band is made on the basis of a single kulir interlacing of the surface of two threads: elastomeric spandex and non-stretchable. The loops of spandex yarns form the internal elastic framework of the braid, and the elements of the loops of nonstretchable yarn overlap the framework of the front and back sides. The ratio of the modules of the loops of the spandex yarn and the nonstretchable yarn is 0.75-0.92. When the braid is inserted to increase its quality, the elastic thread is fed between the non-expandable threads. 2 sec. the item of f-ly, 1 zp f-ly 4 ill., 1 tab. S

Description

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This invention relates to knitwear.

 the industry, in particular, to an elastic band, including a spandex elastomer thread and inextensible yarns, and intended for use as a finishing material in the manufacture of wetsuits from double-sided duplication materials.

The purpose of the invention is to improve the performance properties of the tape when finishing

1 stitches wetsuits.

j FIG. a diagram shows the location of the threads in the band on the front side;

 in fig. 2 - the same, on the wrong side; in fig. 3 - schemes: a way to under

tapes; in fig. 4 - the same.

The webbing comprises an internal elastic frame 1 formed by a spandex polyurethane thread in each loop loop, all loop elements, namely sticks and needle arcs of the core, and also the loop loops consist of straight linear segments. Loops of nonstretchable thread 2 are arranged in the ribbon structure in such a way that the needle sticks of the core, as well as needle and platinum arches

.The framework of polyurethane thread spandex is covered on the front and back sides (Fig. 1 and 2).

The proposed braid is as follows.

In a stocking machine, the needle bed of which performs a reverse movement, the number of needles is established, which corresponds to the knowledge of a string of a given width (12-22 mm). In the process of understretching, the Beats should change for a polyurethane thread a spandex from 0.12 to 0.24 N, and for non-expandable threads from 0.3 to 0.8 P, and the ratio of the modules of the loops of polyurethane threads spandex and non-expandable yarns must be between 0.75-0.92. Threads 1 and 2 are simultaneously fed to one yarn feeder 3 and simultaneously wound into loops (Fig. 3).

In order to improve the quality of the braid, while pulling the polyurethane thread 1, the spandex is tucked between two stretch threads 2. When the needle bar moves in one direction, the non-stretch thread from the yarn guide 3, forming a loop, will overlap the elastic frame from polyurethane thread 1, and moving the needle bed to the other side, the inextensible thread from the yarn feeder 4 will overlap the frame in the next row (Fig. 4).

When an elastic band is blended in a manner in which the spandex polyurethane thread is not fed into the loop-like system between two non-stretchable threads, the quality of the webbing deteriorates. On the surface of the gesma, areas are formed in which the loop elements of the inextensible yarn do not overlap the frame of the spandex polyurethane yarn.

When the tape is inserted in a manner in which the tension of the spandex polyurethane filament is 0.28 N, the thread breaks and the quality of the webbing deteriorates. With

In the case of braiding in the manner in which the tension of the inextensible thread is 0.25 N, the quality of the braid deteriorates and the process of looping becomes difficult.

When in tape, by the way in which,. The tension of the unstretchable thread is 0.85 N, the loop formation process is complicated, the quality of the braid and its operational properties deteriorate.

In the process of scrolling through the webs, the hinge module is established by changing the position of the chimney wedges of the locking system in relation to the bumper. The width of the webbing is determined by the number of working needles, depending on the class of the stocking machine and the type of finishing seam.

0 To illustrate the invention, examples are given of making elastic band for wetsuits.

Example}. Blending elastic wetsuits is done by

5 H2 class 14 hosiery machine by co-wounding an elastomeric yarn spandex 15.6 tex linear density and a polyamide textured yarn texel x 2 elastic yarn when tensioning yarns in a loop-forming system for

0 spandex yarn 0.12 N, and for a polyamide textured yarn 0.3 N. The yarns are fed simultaneously to one yarn feeder. The ratio of the modules of the spandex polyurethane filament to the textured polyamide filament is set at 0.75. amount

5 needles in the refueling 28 needles. Properties of the tape are presented in the table.

Example 2. The braid, made according to example 1, of polyester yarn and spandex polyurethane yarn with a loop modulus of 0.92 and a yarn tension in the loop of the spandex yarn forming system of 0.24 N; and for polyester yarn 0.8 N. The properties of the resulting tape are presented in the table.

Example 3. The braid is made according to the example.

1g 1 of polypropylene yarn and spandex yarn with a loop modulus ratio of 0.84 and yarn tension in the loop forming system for a spandex yarn of 0.18 N and for a polypropylene yarn of 0.5 N. The properties of the resulting tape are shown in the table.

0 Example 4. The braid is made according to example 1 when filling a spandex polyurethane yarn between two polyamide yarns into different yarn feeders with a loop modulus of 0.75 and a spandex polyurethane yarn tension of 0.12 N, and for each polyamide yarn of 0.3 N The properties of the tape are presented in the table.

From the data given in the table and examples, we offer elastic band

for wetsuits it has improved performance properties compared with the known by 10-12%. The ratio of stretchability of the webbing and the rubber-textile material exceeds 1, which indicates high deformation properties of the webbing, ensuring simultaneous deformation of the connecting parts of the wetsuit. The thin thickness of the braid and its weight make it possible to improve the quality of the finishing seams, especially the inner ones.

By creating a braid in which a polyurethane thread is fed between two non-expandable yarns, its quality is improved by uniformly coating the frame of polyurethane yarn with non-expandable yarns.

Claims (3)

1. Elastic band for wetsuits, made by kulir weave of highly elastic polyurethane spandex yarns and non-expandable yarns. 0 five 0 characterized in that, in order to improve its operational properties, it is made of single weave, the loops of spandex yarns in each looped row form an elastic inner frame, and the elements of the loops of inextensible yarns overlap it from the front and back sides, the ratio of the modules of the loops of elastomeric spandex yarn and unstretchable filaments is from 0.75 to 0.92. 2. The braid according to claim 1, characterized in that polyamide, polyester or polypropylene threads are used as inextensible yarns. 3. A method of making elastic band for wetsuits, which consists in laying elastic and inextensible threads under the hooks of the needles at the same time, and then twisting them into loops, characterized in that, in order to improve the quality of the band, an elastic thread is laid between two non-extensible nit mi .one