CS252357B1 - Method of two-component sewing threads production - Google Patents

Abstract

A method for producing two-component sewing threads for sewing, falls into fabrics and Knitted Fabrics characterized in that it has a skirt made of staple material like nature, cellulose or synthetic fibers; supply two linear textiles under the outlet a drafting roller that is spinning together.

Description

The invention relates to a process for the production of two-component sewing threads.

The present process for the production of two-component core sewing threads consists of the following technological operations. It is refinement and cleaning, carding, stranding, sewer stretching, combs, two stretches and pre-spinning. The yarn produced in this way is presented to annular spinning machines, whereby an endless yarn is fed to a single yarn in front of the exit stretch roller to produce a core yarn composed of one endless silk and cotton staple material.

In other technological operations, the core yarns are mated, folded together, folded and the core sewing thread is produced by subsequent refining and finishing. A disadvantage of the prior art method of producing core sewing threads is that the process consists of several technological operations. During production, there is a higher number of breaks and there are unsealed places.

These drawbacks are eliminated in the process of making the two-component sewing threads of the invention, which consists in that two linear textiles such as synthetic, cellulose or staple yarns are fed to the yarn of staple material such as natural, cellulosic or synthetic fibers and mixtures thereof. and then skewered.

An advantage of the method of making the two-component sewing threads according to the invention is that the technological process is substantially shortened, namely by the bundling and rewinding operations.

At the same time, the tear will be reduced while maintaining the physico-mechanical properties and sewing capability compared to the core sewing threads produced by conventional teclinology. The yarns produced according to the invention combine the advantageous properties of synthetic and natural materials and, even at a high proportion of synthetic silk, the resulting yarn retains a staple character.

The method of making the sewing threads of the present invention is accomplished by feeding two endless silks (e.g., PEShJ) under the output punch roller to the staple material in the form of a yarn in the spinning process on the annular spinning machine, thereby producing the resulting gray sewing operation.

The twist direction is generally used to the right (Z) t. j. direction of the twist twist from the prior art technology of core sewing thread production. The number of twists is in the range of 500 - 1000 z / ml depending on the selected final fineness in terms of achieving not twisting or twisting. staple component and thereby achieve excellent sewing ability. Thus, the twist for the selected fineness of the N should be determined experimentally. (For some finenesses of SS, the number of twists is specified in the application examples

In order to produce a sewing thread according to the invention, it is necessary to solve the placement of twice the number of kicks on the ring spinning machine. (Increasing production to double. J This is possible by adjusting the reel and / or production on each second spindle of the spinning machine while maintaining production in comparison with the current technology or the new concept of machine construction - larger spindle spacing, etc. invention.

The suture threads produced according to the invention must also be heat-stabilized by steaming (using PESh of non-shrinkable type and cotton) to reduce looping for the next processing stage - rewinding for dyeing or fixation (e.g. when using PESh of shrinkage type and PESs as [material] to adjust the physical mechanical properties (ductility, shrinkage) to the required parameters.

DvoJkúpefovým resp. by high pressure dyeing of the PES component The loopsity of the resulting yarn is suppressed to such an extent (below 50 loops / ij that it does not affect the negative sewing process. The loopsity reaches the loopiness of the sewing threads produced by the conventional cotton process).

This implies that the structure of the stitch. The threads produced according to the invention are suitable for use in sewing in the field of ready-made fabrics.

The described technology can also be successfully used for the production of yarns for use in knitting products and fabrics.

The subject matter of the invention is illustrated by way of example.

EXAMPLE

The Mil combed cotton yarn was used], made with conventional 200 tex cotton combed technology, to which 2 infinite PESh Slotera NZ 7.6 tex are fed on an annular spinning machine at a total elongation of 22.7 and a right bend of 700 Z / m is produced. gray sewing thread fineness 24 tex. By further steaming, refining and dosing with finishing we get a kennel sewing thread.

Example 2

A PESs Tesil 1.3 dtex of 400 tex fineness was used, to which 2 infinite PESh Sloter NZ 14 tex was fed on an annular spinning machine and a seam cut was made at a right turn of 500 z / m. thread of fineness 40 tex. Further steaming, rewinding for dyeing, high-pressure dyeing and reeling with finishing are used to produce a toasted neck. thread.

Example 3

A carded cotton yarn of 400 tex was used and a filament of 2 continuous filament yarns of Slotera shrinking 6.7 tex on an annular spinning machine at a total draw of 25.6 and a bend of 550 Z / m produced a 29 tex fine yarn for use in fabrics and knitting.

Claims (1)

SUBJECT Process for the production of two-component sewing threads on ring spinning machines, characterized in that two linear textiles are fed under the exit stretch roller, which are spun together by a right twist, to the yarn of staple material such as natural, cellulosic or synthetic fibers.