Fabric coloring method with soil pigment

EP4634453A2Pending Publication Date: 2025-10-22AGAOGLU TEKSTIL SANAYI VE TICARET ANONIM SIRKETI
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Patent Information

Application Number
EP2023904164
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-12-11
Publication Date
2025-10-22

AI Technical Summary

Technical Problem

The textile industry's reliance on synthetic dyes, which are non-renewable, non-degradable, and harmful to human health and the environment, leads to significant chemical pollution and ecological damage, necessitating a more sustainable and health-friendly fabric coloring method.

Method used

A fabric coloring method using soil pigments, which are renewable and biodegradable, involves reducing soil to nano-micro dimensions, mixing it into a printing paste, applying it to fabrics through printing, drying, and fixing the color to create a non-toxic, allergenic, and environmentally friendly textile product.

Benefits of technology

This method eliminates water pollution, prevents health hazards, and ensures sustainable production by using natural pigments that decompose spontaneously, reducing the environmental and health impacts associated with synthetic dyes.

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Abstract

Fabric coloring method with soil pigment The invention relates to a fabric coloring method that enables knitted, woven or nonwoven fabrics in the textile industry to be colored by printing method using colored soil pigments and to obtain textile products that do not contain chemical dyestuffs.
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Description

[0001] Fabric coloring method with soil pigment

[0002] FIELD OF THE INVENTION

[0003] The invention generally relates to methods for coloring fabrics used in the textile industry.

[0004] In particular, the invention relates to a fabric coloring method that enables knitted, woven or nonwoven fabrics in the textile industry to be colored by printing method using colored soil pigments and to obtain textile products that do not contain chemical dyestuffs.

[0005] STATE OF THE ART

[0006] Today, in accordance with the changing fashion trends and trends, there is a need to obtain fabrics in different colors in the textile sector. In order to meet this requirement, many chemicals of different properties and types, especially chemical dyestuffs, auxiliary products, acids, bases and salts, are used in the coloring processes of textile products. In the technical field, various chemical dyestuffs and dyeing methods are being developed, and in this way, vivid, bright fabrics with the desired texture are tried to be obtained. However, many of the synthetic dyestuffs and dye auxiliary products based on petroleum and petroleum derivatives used contain toxic, heavy metal compounds and substances harmful to human health.

[0007] Synthetic origin dyestuffs in the stat of the art are widely used in the textile industry. The production and use of chemical dyes, whose basic raw materials are non-renewable and non-degradable in nature, have many harmful effects on the environment and health. Currently, chemical pollution and the damages caused by this pollution occur during the production, use and waste management of synthetic dyestuffs. Synthetic dyestuffs, which are currently used in high quantities, create pollution with toxic, carcinogenic and mutagenic effects that are harmful to the environment and health. Textile printing and dyeing industry wastewater contains a certain amount of dyes and chemicals from the synthetic dyestuffs used. Textile printing and dyeing industry wastewater containing dyestuffs is released into rivers through discharge water. These controlled or uncontrolled discharges of chemicals, called pollution, have many harmful effects on the environment and health. Undoubtedly, the seas, lakes, rivers and drinking water basins polluted by these wastes suffer the most. The creatures living in these areas are affected by this pollution. In many cases, when this contaminated water reaches freshwater sources and is reused in the production of drinking water or directly for agricultural irrigation or industrial purposes, these health hazardous substances reach humans. On the other hand, water contaminated with dyestuffs reaches humans through the food chain as rivers carry them to the sea. Again, azo dyes constitute a large part of the colorants used worldwide in the state of the art. The presence of these compounds in wastewater can cause toxic effects for aquatic ecosystems and human health.

[0008] Currently, high amounts of polluting synthetic dyestuffs with toxic, carcinogenic and mutagenic effects on the environment and health are used in high quantities in the coloring of textile fabrics. Synthetic dyestuffs are among the groups that cause pollution. Given the damage caused by their use, the best way to avoid the environmental burden is to use synthetic dyestuffs as little or as little as possible.

[0009] Document numbered TR2019 / 09031, which was encountered in the known state of the art, is about ecological fabric dyeing method with natural dyes. In this document, a fabric coloring method is disclosed that comprises the steps of obtaining fibers by subjecting cellulose or regenerated cellulose fibers to mordanting or cationization, obtaining yarn from fibers obtained by 100% cationization or blends of cationized and non-cationized fibers in different proportions with each other by Ring, OE or air jet spinning method, circular knitting, flat knitting, producing knitted or woven fabric with cationic properties by using a warp knitting machine or a rapier / air-jet weaving machine, wetting the cationic fabric with a wetting agent as a pre-treatment for the dyeing process, and dyeing the fabric pretreated with a wetting agent with vegetable dyes.

[0010] In this application, the fabric production process is mostly mentioned and the dyeing of the fabric produced with standard methods and vegetable dyes is discussed.

[0011] Document numbered TR2020 / 17648 relates to fabric coloring process. In this document; the fabric coloring process comprising the steps of dyeing the fabrics containing cellulose, regenerated cellulose and / or their blends with other natural or synthetic fibers in a continuous yarn dyeing machine without removing the natural oil, wax, pectin and sizing on the warp yarn, dyeing the sizing warp yarn and the yarn without sizing at different levels, washing the fabric in order to flow the dye at different levels. In this application, only the method of coloring the fabric has been changed and the coloring of the fabric is carried out with chemical dyestuffs mentioned in the state of the art.

[0012] As a result, improvements are being made in the methods of coloring fabrics, so new structures are needed so as to eliminate the disadvantages mentioned above and to bring solutions to existing systems.

[0013] AIM OF THE INVENTION

[0014] The present invention relates to a method of fabric coloring, which meets the above- mentioned requirements, eliminates all disadvantages and brings some additional advantages.

[0015] The main aim of the present invention is to enable the coloring of fabrics with soil pigment, the main raw material of which is renewable and biodegradable.

[0016] One aim of the present invention is to provide a production process that does not harm human and environmental health by using soil pigment, which is a natural dyestuff, in the process of coloring fabrics.

[0017] Another aim of the present invention is to produce an antiallergic fabric that is not harmful to human skin as a result of dyeing fabrics with natural dyestuff.

[0018] In order to realize all the advantages mentioned above and to be understood from the detailed description below, the present invention is a fabric coloring method that enables knitted, woven or nonwoven surface fabrics in the textile sector to be colored by printing method using colored soil pigments, the method comprises the following steps;

[0019] • obtaining soil pigment with protection, film forming and coloring properties suitable for printing technique,

[0020] • applying the soil pigment, the suitability of which is determined, to the fabric in the form of knitted, woven or nonwoven surface by printing technique by mixing it into the printing paste,

[0021] • drying of fabric colored with soil pigment,

[0022] • fixing the fabric after the drying process is completed. The structural and characteristic features of the present invention will be understood clearly by the following drawings and the detailed description made with reference to these drawings. Therefore the evaluation shall be made by taking these figures and the detailed description into consideration.

[0023] DETAILED DESCRIPTION OF THE INVENTION

[0024] In this detailed description, the preferred embodiments of the fabric coloring method is described only for clarifying the subject matter in a manner such that no limiting effect is created.

[0025] The present invention is a fabric coloring method that enables knitted, woven or nonwoven surface fabrics in the textile sector to be colored by printing method using colored soil pigments, the method comprises the following process steps;

[0026] • obtaining soil pigment with protection, film forming and coloring properties suitable for printing technique,

[0027] • applying the soil pigment, the suitability of which is determined, to the fabric in the form of knitted, woven or nonwoven surface by printing technique by mixing it into the printing paste,

[0028] • drying of fabric colored with soil pigment,

[0029] • fixing the fabric after the drying process is completed.

[0030] The invention, in its most general form, relates to the obtaining of pigments with protection, film-forming and coloring properties from soil and the use of these pigments in the process of coloring fabrics in the form of knitted, woven or nonwoven surfaces by printing method. In the method of the present invention, the first process required for the application of the fabric coloring process is to bring the soil into a pigment form suitable for processing. Said process step is to reduce the soil to nano-micro dimensions, which is the usable, workable form for the next process, printing. The nano-micro-sized soil pigment resulting from the repetition of the beating (crushing / crushing / grinding) and sieving processes one after the other until a suitable form is obtained is ready for the next process, printing. The soil pigment particle size is preferably brought to a range of 1 micron to 200 microns. Since the soil pigment does not have the ability to penetrate the fabric (penetration, adhesion to fibers, affinity), coloring is applied by printing method. The soil pigment, the suitability of which is determined, is mixed into the printing paste and applied to the fabric in the form of knitted, woven or nonwoven surface by printing technique. The porosity of the screen cloth used in the printing process is in the range of 80 mesh to 500 mesh. After the printing process, the colored fabric goes through the drying process. The drying process is preferably carried out between 100°C and 150°C and between 4 minutes and 14 minutes. The dried fabric passes through the fixing process after this process. The fixing process is preferably carried out between 100°C and 180°C and between 4 minutes and 20 minutes. The fabric, which also passes through the fixing process, passes through standard finishing processes and the coloring process of the fabric is completed.

[0031] With the inventive coloring method, the use of chemicals harmful to the environment and human health is prevented in the fabric production process. In this coloring method, the soil pigment taken from nature is given back to nature after being used in the coloring process. The problem of biodegradability is eliminated with the soil pigment, which dissolves and decomposes spontaneously in nature. With the invention, water pollution is prevented, sustainable production without waste management problems is ensured, health problems caused by chemicals are prevented, and environmental and nature destruction is prevented.

Claims

CLAIMS A fabric coloring method that enables knitted, woven or nonwoven surface fabrics in the textile sector to be colored by printing method using colored soil pigments, characterized in that, it comprises the following process steps;• obtaining soil pigment with protection, film forming and coloring properties suitable for printing technique,• applying the soil pigment, the suitability of which is determined, to the fabric in the form of knitted, woven or nonwoven surface by printing technique by mixing it into the printing paste,• drying of fabric colored with soil pigment,• fixing the fabric after the drying process is completed. A fabric coloring method according to claim 1 , characterized in that; it comprises the process step of obtaining the soil pigment by repeating the beating and sieving of the soil, one after the other, until a suitable form is obtained. A fabric coloring method according to claim 1 , characterized in that; soil pigment particle size is in the range of 1 micron to 200 microns. A fabric coloring method according to claim 1 , characterized in that; the porosity of the screen cloth used in the printing process is between 80 mesh and 500 mesh. A fabric coloring method according to claim 1 , characterized in that; the drying process is applied between 100°C and 150°C for 4-14 minutes. A fabric coloring method according to claim 1 , characterized in that; the fixation process is applied between 100°C and 180°C for 4-20 minutes. A fabric coloring method according to claim 1, characterized in that; it comprises the process step of passing the fabric through finishing processes after fixing process.