KR-20260066381-A - garment nature side dyeing environment-friendly blue jean manufacturing method

KR20260066381AKR 20260066381 AKR20260066381 AKR 20260066381AKR-20260066381-A

Abstract

The present invention relates to a method for manufacturing eco-friendly jeans dyed with natural indigo dye on a garment, and more specifically, comprises: a desizing step (F1) for removing impurities remaining on a garment (completed sewing) of trousers; a bio-washing step (F2) for bio-washing the garment trousers desizing through the desizing step; a natural dyeing step (F3) for dyeing the garment trousers bio-washed through the bio-washing step with a natural indigo dye; a mordanting step (F4) for fixing the natural indigo dye by adding a mordant to the garment trousers dyed through the natural dyeing step; a washing step (F5) for removing the mordant remaining on the garment trousers mordanted through the mordanting step; an oxidation color development step (F6) for oxidizing and color-developing the garment trousers washed through the washing step; a washing step (F7) for washing the garment trousers oxidizing and color-developing through the oxidation color development step; a fixation step (F8) for fixing the natural indigo dye by adding a fixing agent to the garment trousers washed through the washing step; and the fixation It includes a softening step (F9) in which a softening agent is added to the garment pants to soften them, and a drying step (F10) in which the garment pants are dried.

Inventors

이현자

Assignees

에프엠주식회사

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (13)

As a method for manufacturing eco-friendly jeans using natural indigo dyeing for garment, Desizing step (F1) for removing impurities remaining on the sewn garment trousers; A bio-washing step (F2) for bio-washing the garment pants dehydrated through the above dehydrated step; A natural dyeing step (F3) for dyeing the garment pants washed through the above bio-washing step with natural indigo dye; A mordanting step (F4) in which a mordant is added in the above natural dyeing step to fix the natural indigo dye; A washing step (F5) to remove residual mordant from the above mordant step; An oxidation color development step (F6) for oxidizing and color-developing the garment pants washed through the above washing step; A washing step (F7) for washing the garment pants that have been oxidized and colored through the above oxidation and coloring step; A fixation step (F8) in which a fixing agent is applied to the garment pants washed through the washing step above to fix them; A softening step (F9) in which a softening agent is added to soften the garment in the above fixing step; and a drying step (F10) in which the garment pants are dried; A method for manufacturing eco-friendly jeans with natural indigo dyeing of a garment, characterized by including
In claim 1, A method for manufacturing natural indigo-dyed eco-friendly jeans, characterized in that the above-mentioned garment pants are denim fabric for jeans, or are one of Lycra, cotton, rayon, polyester, spandex, stretch, ramie, Sanfordry, or turtleselv, or are a blend.
In claim 1, A method for manufacturing natural indigo-dyed eco-friendly jeans, characterized in that the natural dye added in the above natural dyeing step (F3) is natural indigo powder, which is either indigo powder produced through a domestic traditional dye manufacturing process or a natural raw material that is one of Niram or Indoram.
In claim 1, A method for manufacturing naturally indigo dyed eco-friendly jeans, characterized in that in the above natural dyeing step (F3), the dye solution is composed of natural indigo powder, an alkali agent, and a hydrosulfide mixed in a weight ratio of 1:0.3:0.3 to 1:1:2.5.
In claim 1, A method for manufacturing natural indigo dyed eco-friendly jeans, characterized in that the dye solution in the above natural dyeing step (F3) is natural indigo powder or Niram.
In claim 1, A method for manufacturing natural indigo-dyed eco-friendly jeans, characterized by dissolving natural indigo powder, an alkali agent, and hydrosulfide in a weight ratio of 1:0.3:0.3 to 1:1:2.5 in water at a temperature of 70~75℃ to 50℃ during the natural dyeing step (F3), and reducing the dye solution with a pH of 10~11 for 30 minutes to 60 minutes.
In claim 1, A method for manufacturing natural indigo-dyed eco-friendly jeans, characterized in that the alkali agent added in the above natural dyeing step (F3) is selected from potassium carbonate and caustic soda.
In claim 1, A method for manufacturing natural indigo dyed eco-friendly jeans, characterized by adding a natural indigo dye solution in the above natural dyeing step (F3), maintaining the temperature at 10 to 20°C, and operating the dyeing machine for 30 to 40 minutes.
In Article 1, A method for manufacturing natural indigo dyed eco-friendly jeans, characterized in that the mordant added in the above mordant step (F4) is selected from the group of alum and iron mordants.
In claim 1, The above oxidation color development step (F6) is characterized by using a dyeing machine that deviates from oxidation color development by exposure to air, adding 2 g/L of glacial acetic acid (CH3C0OH), and performing oxidation color development at a temperature of 30 to 45°C for 5 to 10 minutes, in a method for manufacturing natural indigo-dyed eco-friendly jeans.
In claim 1, A method for manufacturing natural indigo-dyed eco-friendly jeans, characterized by using a fixing agent at a concentration of 4%/L in the fixing step (F8), fixing at 30°C for 5 minutes, and then raising the temperature to 60°C and treating for 15 minutes.
In claim 1, A method for manufacturing natural indigo dyed eco-friendly jeans, characterized in that the type of softener used in the softening step (F9) is composed of eco-friendly ingredients.
Deodorizing step (F21) for removing impurities remaining on the garment pants; A bio-washing step (F22) of bio-washing the above garment trousers at a temperature of 60~70℃ for 20 minutes; A natural dyeing step (F23) of dyeing the above garment pants with natural indigo dye; A mordanting step (F24) in which a mordant is added to the garment trousers to fix the natural indigo dye; A washing step (F25) to remove residual mordant from the garment pants; An oxidation color development step (F26) in which glacial acetic acid is added to the above garment pants to develop an oxidative color; A washing step (F27) to remove residual glacial acetic acid from the garment pants; A fixation step (F28) for fixing the natural indigo dye of the above garment trousers; A dehydration drying step (F29) for dehydrating and drying the above garment pants; Cat + Sand step (F30) for cat + sanding the above garment pants; A spray gun step (F31) of bleaching the above garment pants by mixing 300g to 1kg of sodium permanganate with 20L of water using a spray gun; A neutralization step (F32) in which the above garment pants are neutralized with a neutralizing agent mixed with 2 kg of hydrogen peroxide and 1.5 kg of glacial acetic acid; A softening and dehydration step (F33) in which a softening agent is added to the garment pants to soften and dehydrate them; A drying step (F34) for drying the above garment trousers. A method for manufacturing eco-friendly jeans with natural indigo dyeing of garment, including

Description

Garment natural indigo dyeing environment-friendly blue jean manufacturing method Garment nature side dyeing environment-friendly blue jean manufacturing method The present invention relates to a method for manufacturing eco-friendly jeans dyed with natural indigo for garments, and in particular, to a new method for dyeing jeans that deviates from the conventional method of dyeing cotton yarn to produce denim fabric woven by twill weaving. Furthermore, the present invention provides a method for dyeing garment trousers with natural indigo after sewing is complete, aiming to resolve the issues of time consumption and cost associated with existing natural indigo dyeing processes. This relates to a method for manufacturing eco-friendly jeans dyed with natural indigo, which increases the commercial viability of natural dyeing as garment natural dyeing, a method that had previously been shunned by the fashion market due to the uneconomical nature of dyeing yarns or twill fabrics with natural indigo. Denim fabric, commonly known as jeans, got its name from "Serge de Nimes," who originated in the Nimes region of France in the 18th century. Originally, denim was used to make sturdy workwear, and it was introduced to the United States in the mid-19th century and popularized by Levi Strauss as workwear for gold miners. Traditionally, denim is made of 100% cotton, which is soft and breathable, providing a comfortable fit against the skin. As a natural fiber, cotton is biodegradable and easy to care for. Modern denim uses various materials, such as spandex or polyester, blended with cotton to enhance functionality. Denim fabric is woven using a twill weave, creating a unique color contrast by using indigo-dyed threads for the warp and white or undyed threads for the weft. As of 2022, the denim market is worth approximately $64.5 billion, or about 86 trillion won, and indigo dye is required to manufacture jeans. However, due to the increased demand for jeans since the 20th century, synthetic indigo has been used, which has resulted in the extensive use of toxic chemicals. The amount of water used to manufacture a single pair of jeans amounts to approximately 7,000 liters, which is causing environmental pollution problems. In particular, there is a growing need for environmental regulations and exposure to toxic substances resulting from the use of chemical dyes. As such, jeans are a popular and fashionable garment worldwide, widely loved by people of all ages and genders. While dyeing methods using chemically synthesized indigo were previously predominant, the demand for natural dyeing methods is increasing due to concerns regarding chemical components that may be harmful to the human body and environmental side effects. In particular, functional jeans with antibacterial and deodorizing properties utilizing natural indigo dyes are garnering significant attention in line with recent eco-friendly fashion trends. However, commercialization has been difficult using conventional methods due to the uneconomical nature and limited durability of natural dyes. Recently, natural dyeing methods using natural indigo powder dye have been gaining prominence; however, the dyeing cost is relatively high, and the expression of a wide range of colors is insufficient. Furthermore, mass production remains difficult due to the problem of having to dye the yarn repeatedly. Therefore, there is a need to develop a manufacturing method for popular, eco-friendly natural indigo-dyed jeans that enables the design processing and diverse color implementation desired by recent users, thereby overcoming the shortcomings of conventional natural indigo dyeing methods and increasing commercialization potential. FIG. 1 is a process flowchart of a method for manufacturing natural indigo-dyed eco-friendly jeans according to one embodiment of the present invention. FIG. 2 is a process flowchart of a method for manufacturing natural indigo-dyed eco-friendly jeans according to another embodiment of the present invention. Figure 3 is a photograph showing a naturally dyed jeans garment dyed with natural indigo through Example 1 of the present invention. Figure 4 is a photograph showing a naturally dyed jeans garment dyed with natural indigo through Example 2 of the present invention. Figure 5 is an image to help understand the natural indigo-dyed eco-friendly jeans of the present invention. The method for manufacturing naturally dyed jeans for finished jeans according to the present invention is differentiated from existing methods of dyeing in the state of thread or fabric, and aims to popularize naturally dyed jeans by enabling the expression of various colors, small-batch production, and real-time response to user demands. Below, the method for manufacturing naturally dyed jeans for finished jeans according to the present invention will be described in detail through an example. In the present invention, the finished jeans are exemplified by a 100% cotton ma