CS214925B1 - Method for producing a fancy yarn - Google Patents

Abstract

A method for producing a fancy yarn containing at least two components, of which the first component has a shrinkage at least 12% lower than the second component. The fancy yarn produced by the method according to the invention is suitable for use in particular in fabrics and knitwear for women's outerwear and in a coarser form in upholstery and possibly also in decorative fabrics. The essence of the invention lies in the fact that first the first component is spun with the second component, then the formation thus obtained is spun with an opposite spinning twist with another formation containing the second component, after which the yarn is spun. During spinning, both spun components are fed at the same speed.

Description

The invention relates to a method for producing a fancy yarn comprising at least two components, the first component having a shrinkage of at least 12% lower than the second component.

The fancy yarns are usually produced on special twisting machines, which in particular allow the individual components to be fed to the twisting point at different speeds, thereby forming loops or other desired effect. The disadvantage is the necessity of special equipment and relatively low productivity.

Also known is a fancy yarn comprising at least two components with different coagulation. A method for producing the same is to combine the components of different shrinkage, then precipitate them by the action of a precipitating medium, for example steam or water, and then combine with at least one other non-precipitating component.

Although this method of production is more productive, it cannot achieve the regular effect produced by the previously described method on special twisting machines.

The object of the invention is to eliminate as far as possible the shortcomings of the state of the art and to provide a method for producing a fancy yarn using different coagulation of the components, in order to achieve the effect achieved on twisting machines with different feeding of the individual components.

SUMMARY OF THE INVENTION The first principle is that the first component is bent with the second component, then the formation thus obtained is twisted by opposite twisting with another formation containing the second component, whereupon the thread precipitates. When twisting, the folded components are fed at the same speed.

The advantage of the invention lies in the fact that it allows to produce an effect on the effect threads achieved so far when twisting on efficient twisting machines by utilizing the different shrinkage of the components folded on the twisting machine with the feeding of the folded components at the same speed. Thus, an effective twisting machine is not required for carrying out the method of the invention.

An example of a fancy yarn produced by the method of the invention is shown in the drawing.

On a conventional twisting machine at the same speed, the first component 1 drops off with the second component 2, the first component 1 having a shrinkage of at least 12% lower than the second component 2. The first component 1 consists of a non-shrinking yarn or tow, optionally twisted přástu. The second component 2 consists of a coarse yarn or coarse silk. The first component 1 is preferably substantially coarser than the second component.

The next operation is to twist the thus obtained formation by opposite twisting with another formation containing the second component 2. This further formation is, for example, the second component 2 itself, as shown in the drawing, or the second component 2 wound or associated with a non-shrinking or less shrinking filler thread.

In a further operation, the yarn thus obtained precipitates. This creates regular loops from the cross-over precipitated second components 2 from the first component 1, as shown in the drawing. The resultant effect on the effect threads produced by the method according to the invention can be varied by changing the number of twisting twists of both twisting operations, by choosing different materials for the first component 1 and for the second component 2, or for the filling thread.

Example 1

X 100 tex 40/60 PADs / VSs bends with S 320 with 100 ° / o PANs shrinkable with a fineness of 28 tex. The formation thus formed is folded with 100% PANs shrinkable with a fineness of 28 tex by a Z 160 twist. The resulting thread is precipitated in the form of skeins in steaming autoclaves.

Example 2

X 50 tex 100% PANs stabilized with bend S 480 with 100% PANs shrinkable with a fineness of 28 tex. The formation thus formed is folded with 100% PANs shrinkable with a fineness of 28 tex by a Z 240 twist. The resulting thread is precipitated on a continuous steaming line.

Example 3

X 100 tex 50/50 POPs / VSs with bend S 300 with yarn of 100% PESs VELANA S with shrinkage of about 50% with a fineness of 50 tex and the formation thus formed bends with a yarn of 10 ° / o PESs VELANA S with a fineness of 50 tex The resulting thread is precipitated on a continuous steaming line.

Example 4

X 133 tex POP tow mechanically shaped with 50 tex blended yarn 20/80 POPs / VELANA S with shrinkage of PES fiber with about 50% twist S 250 and the formation formed with 50 tex 20/80 POPs / VELANA S yarn twist Z 200. The resulting thread is precipitated on a continuous steaming line.

The fancy yarns of Examples 1 and 2 are suitable for use in the manufacture of fabrics and knitwear for women's outerwear, for example, costumes and coats. The fancy yarns of Examples 3 and 4 are best applied in the manufacture of upholstery fabrics.

Claims (2)

A method of producing a fancy yarn comprising at least two components, the first component having a shrinkage of at least 12% less than the second INVENTION component, characterized in that first the first component is twisted with the second component, then the thus obtained formation is twisted by opposite twisting with another formation comprising a second component that during twisting, the twisted components are fed the component, whereupon the yarn precipitates. at the same speed. 2. The method of claim 1, wherein: