CZ15706U1 - Yarn for producing rifle fabric with gradual abrasion process of original color shade to another color shade - Google Patents

Abstract

The solution concerns the yarn for production of blue-jeaned fabric with the elected colour effect. The gist of the solution is that the resulting yarn is constituted by the core spidleless staple yarn and on its surface is rotor-spun staple yarn with the dyeing different from the dyeing of the core spindleless staple yarn which result in the two-color effect for the resulting yarn.

Description

Yarn for making denim fabric with the effect of gradual abrasion of the original color shade on another color shade

Technical field

The invention relates to a yarn intended for the manufacture of denim fabrics with a selected color effect. Color effect denim respectively. denim products occur after a certain time of wear by the user, when the original color shade of the warp component of the fabric is abraded into another color shade, for example the natural color.

BACKGROUND OF THE INVENTION

A complex dyeing process involving several manufacturing stages is currently used to dye the warp threads of denim fabrics with the effect of gradual rubbing of one color onto another, which entails considerable technological costs. The dyeing is followed by a chemical and / or mechanical treatment of the warp yarns in order to obtain a bicolour effect. Dyes which have been specially developed and treated are also used for this purpose. facilitate its formation in a short period of use of the textile product.

It is therefore an object of the present invention to provide a different process for preparing warp yarns exhibiting the effect of gradual abrasion of one color on another color, for example from the original indigo color also called denim to a natural color.

The essence of the technical solution

This object was achieved according to the invention by the construction of a rotor yarn formed of two components, one of which is a core open-end staple yarn and the other component is a mantle open-end staple yarn spun on the core yarn surface. thereby achieving a two-color effect in the resulting rotor yarn.

With this construction of the resulting rotor yarn, many different color variations can easily be achieved by gradually rubbing the color shade of the sheath layer of the yarn to the color shade of the core yarn. The technology of producing a two-component rotor yarn is also more economical than in the prior art.

The two-component open-end staple yarn may be exclusively cotton or blended yarn, in particular of a cotton-polyester blend or exclusively of a cotton-polyester blend.

It is also a feature of the present invention that the core open-end staple yarn exhibits a fineness of from 30 to 70 tex, while the sheath open-end staple yarn has a fineness of from 10 to 50 tex. It is also advantageous to use regenerates, in particular for sheathed open-end staple yarns, whereby the regenerates need to be uniformly colored in the dyeing apparatuses.

Examples of technical solution

Some of the possible constructional applications of open-end staple yarn according to the invention are given in the following specific examples.

Example 1

For making denim fabric with a denim shade, yarn spun on an open-end spinning machine containing 100% cotton was used in the warp. This yarn, resulting in 430 turns per meter of length, consists of two components, the first being a cotton core open-end staple yarn with a staple of 16 to 40 mm, a fineness of 50 tex, 590 turns per meter of length in natural color. a cotton staple with a staple of 16 to 40 mm, a fineness of 30 tex, dyed in a navy blue flake, the second component of the resulting yarn being rotor-spun onto the surface of a core open-end staple yarn with a selected twist of 420 turns per meter . This warpless spindle two-component staple yarn is made by spinning on an open-end spinning machine designed for spinning with spinning, for example on a machine marked RIETER - BT 904, type ROTONA. A core yarn is fed to the rotor of the machine through a tube and a hollow bearing and the core yarn is braided with fibers of the second component of the resulting two-component open-end staple yarn. Thus, the second component is a mantle open-end staple yarn. The resulting two-component open-end staple yarn is pulled from the rotor of the production machine in a conventional manner via a funnel, a tube and a take-up roller to the winding roller and spool.

With regard to obtaining the weft yarn for making denim fabric, a conventional gray cotton yarn of 60 tex can be used since the weft is located on the reverse side of the fabric. Alternatively, a denim fabric may also be applied to a weft open-end spun cotton rotor yarn with a core of a fineness of 50 to 70 tex.

The resulting two-component open-end staple yarn used in the warp is rubbed on the finished denim product to the natural shade of the core yarn.

Example 2

For the production of the resulting core yarn, a 50 tex natural color spun yarn in a blend with polyester is used as the core to help achieve the necessary yarn strength. The spun staple sheath yarn for the core yarn is cotton, 30 tex, in a denim shade. This results in a resulting yarn with a natural-colored core, which rubs on the finished jeans product into the natural-colored core of the yarn.

Example 3

The resulting two-component open-end staple yarn according to Example 2, except that a regenerated material obtained from the spun rags is used as the starting material for the spun staple sheath.

Example 4

The resulting two-component open-end staple yarn according to Example 2, except that a pair of said core yarns is made for use in the warp.

Example 5

For the production of the resulting warp core yarn, an open-end yarn 50 tex in red color is used as the core, onto which a spun open-end staple yarn 30 tex with a denim color shade is spun. A product made of such a resulting warp yarn would scuff into red, representing an unconventional color concept of the goods and a possible fashion hit.

Claims (5)

PROTECTION REQUIREMENTS 35 1. Yarn for the manufacture of denim fabric with the effect of gradual abrasion of the original color shade to another color shade, characterized in that it consists of a core open-end staple yarn, the surface of which is rotor-spun sheath open-end staple yarn. spindle-free staple yarn, thereby achieving a two-color effect on the resulting yarn. 40 Denim fabric yarn according to claim 1, characterized in that the core open-end staple yarn and / or the jacket-open staple staple yarn is of cotton. -2EN 15706 Ul Denim fabric yarn according to claim 1, characterized in that the core open-end staple yarn and / or the open-end open-end staple yarn is mixed, in particular of a blend of cotton and polyester, respectively. exclusively from cotton / polyester blend. The denim fabric yarn of claim 1, wherein the core 5 open-end staple yarn has a fineness of from 30 to 70 tex, while the sheathed open-end staple yarn has a fineness of from 10 to 50 tex. A denim fabric yarn according to claim 1, characterized in that the mantle-free staple yarn is a regenerate dyed prior to tearing, for example denim.