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Method for changing the colour of a textile, fabric and garment

a technology for textiles and fabrics, applied in the field of textile finishing, can solve the problems of high health risks, high sanding risk, and wet washing process, and achieve the effects of less harmful to the environment, less time, and enhanced colour fading

Pending Publication Date: 2020-11-12
SANKO TEKSTIL ISLETMELERI SANAYI & TICARET A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The aim of the present invention is a method for changing the color of textile to create a vintage look that is environmentally friendly, safe for operators, fast, cost-effective, easy to do, and limits any damage to the treated textile.

Problems solved by technology

Sanding is known to be very hazardous for operating workers, and high health risks have been associated with sanding (e.g. silicosis).
Washing processes are wet processes and require great amounts of water and stones / chemicals / enzymes that have to be correctly disposed.
For this reasons, washing techniques are often harmful for the environment and are not considered “green”.
Limitations of stone washing include wear, tear and damage of the textile and eventual metal buttons and rivets thereof and damage of the washing machines.
Moreover, environmental harmful grit is produced by the stones.
Additionally, areas wherein the dye have to be removed cannot be selected when carrying out stone washing.
Enzymes washing processes have the following limitations: limited operational conditions of the enzymes, requirement of post-treatment of the textile, and limited textile loading size of the washing machine.
Parameters above have to be carefully checked in every bleach washing process as fabric degradation can easily occur.
This washing technique is the most harmful washing process for operators and for the environment, as large quantities of harmful chemicals (i.e. strong oxidative bleaching agents) are used to prepare the washing bath.
Textiles can be damaged by the burn and removal of the treated surface, and deformation and loss in strength of the textiles may occur.
Deformation of the textile also limits the deep contrast look of a denim textile, i.e. the visual difference in the laser engraved area on denim fabric (blue-white contrast).
The operational parameters of the laser treatment that provide colour removal on the textile, e.g. laser energy and treatment time, are the same that may cause damages to the treated textile; for this reason, it may be difficult to obtain a deep and intense vintage look on a textile with laser treatments without damaging it.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Method for changing the colour of a textile, fabric and garment
  • Method for changing the colour of a textile, fabric and garment
  • Method for changing the colour of a textile, fabric and garment

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0061]Comparative Example of Change in Colour

[0062]A fabric of the invention is prepared according to steps a), a′), b) and c) as disclosed in Example 1.

[0063]A comparative fabric is prepared by carrying out laser treatment using the same parameters disclosed in Example 1 starting from an identical fabric as the one of Example 1. The comparative fabric has not been subjected to steps a), a′) and b) of the method of the invention.

[0064]The change in colour of the fabrics is evaluated by Datacolor 6000 spectrophotometer using the strength adjustment method, which is a conventional method for comparing the strength of colours. Max absorption peak is set at 660 nm. Fix adjustment strength is set to 100%. The comparative fabric shows a result of 100% strength. The fabric of the invention shows a result of 52% strength. According to the above results, the fabric of the invention has less colour strength compared to the comparative fabric, therefore a higher colour fading is obtained with ...

example 3

[0066]Energy and Time Saving of the Method of the Invention

[0067]A comparative fabric and a fabric of the invention have been prepared starting from identical untreated fabrics. The comparative fabric has been prepared carrying out only laser treatment on the untreated fabric.

[0068]It has been observed by the present Example that the laser treatment to manufacture the fabric of the invention provided an energy saving of about 12% to 20% and a time saving of about 12% to 15% per garment, in particular per pair of pants, and an energy saving of about 120 to 130 W and of about 86 seconds per m2 of treated fabric, with respect to the laser treatment to manufacture the comparative fabric, to provide a comparable vintage look.

[0069]The present Example proves that the laser treatment (step c)) of the method of the invention, compared to laser treatment only, (i) provides cost-savings in terms of energy-savings and time-savings, and (ii) can be carried out with reduced values of the operati...

example 4

[0070]The method of the invention is carried out on a fabric. 5 g of such fabric are kept in 200 mL of deionized water for 30 minutes at a temperature of 50° C. Then, complexometric titration is carried out on the water above using EDTA. It resulted that such water contained 5.8 mg / L of magnesium ion corresponding to about 62 mg / L of magnesium nitrate hexahydrate.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention refers to a fabric finishing method suitable for changing the colour of a coloured fabric thereby providing a vintage look to the fabric. The invention refers also to the fabric obtainable by the above method and to a garment comprising such fabric.

Description

[0001]This application claims priority to and the benefit of European Application No. 19173382.3 filed on May 8, 2019, the content of which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to the field of textile finishing, in particular textile finishing to change colours in textiles to provide a vintage look.BACKGROUND OF THE INVENTION[0003]Finishing processes for textiles are a group of heterogeneous processes that modify the look, the performance and / or the “hand” (feel) of the finished textiles or clothing.[0004]Common finishing processes that modify the look of textiles, in particular of denim, are those that deliberately remove the dyes in specific areas of the textile (e.g. via mechanical abrasion or chemically) to provide a change in colour, and in particular a colour fading effect known as vintage look (also known as worn-out, washed or faded look). Vintage look provides an “aged” effect to the textile that is pa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D06P5/13D06P5/20
CPCD06P5/2005D06P5/2077D06P5/132D06P5/153
Inventor LOYAN, KENANDEDE, YAVUZHAMITBEYLI, AGAMIRZEAKBULUT, SABRETTINOZDEN, ERDOGAN BARISZEYREK, MUSTAFABIRAKMAZ, SERENSEN, MURAT
Owner SANKO TEKSTIL ISLETMELERI SANAYI & TICARET A S
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