A small jacquard anti-pilling coating fabric and a preparation process thereof
By using a fluorine-free water-repellent treatment and a cold-pressing process with a polypropylene and polyurethane mixture coating, the problem of poor down-proof effect of jacquard fabrics has been solved, achieving a lightweight, soft, and highly effective down-proof effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CONCORDIA ADVANCED FABRICS SUZHOU
- Filing Date
- 2023-06-25
- Publication Date
- 2026-08-04
AI Technical Summary
The existing anti-downy coating on small jacquard fabrics is not ideal, and the anti-downy film is expensive and adds a lot of weight to the fabric, making it difficult to meet the demand for lightness and softness.
A lightweight, small jacquard down-proof coated fabric is prepared by using a fluorine-free water-repellent agent for water-repellent treatment, combined with calendering, a non-ionic polypropylene and polyurethane mixture adhesive coating, and cold pressing.
It achieves a highly efficient down-proof effect on lightweight jacquard fabrics. The coating is thin and lightweight with minimal weight gain, soft to the touch, and has high tear strength. The down-proof performance meets the EN 12132-1 standard, enhancing the quality and grade of the fabric.
Abstract
Description
Technical Field
[0001] This invention relates to the field of textile fabrics, and in particular to a small jacquard anti-fleece coated fabric and its preparation process. Background Technology
[0002] There are various down jacket fabrics on the market now, mainly achieving down-proof effects through two methods. The first is to add a lining between the outer and inner fabrics of the garment to wrap the down. However, down jackets are becoming increasingly lightweight, and this lining method is no longer sufficient to meet people's demand for lightweight and soft down jackets. The second method involves applying down-proof finishing, coatings, or films to the fabric to prevent down from escaping. For the second method, down-proof finishing is usually not very effective, and down-proof films are expensive and add significant weight to the fabric. Many down fabrics opt for a thin down-proof coating to achieve the desired down-proof effect, but currently, down-proof coatings are generally only applicable to plain weave fabrics. Because of its special jacquard weave structure, the raised yarns on the surface of lightweight jacquard fabrics are easily deformed by friction, creating large gaps that allow down to easily escape. Ordinary down-proof coatings cannot achieve a good down-proof effect, thus limiting the improvement of the quality and grade of lightweight down garments. Summary of the Invention
[0003] The first objective of this invention is to address the problem described in the background art that existing anti-downy coatings on existing jacquard fabrics fail to achieve the anti-downy effect, and to provide a preparation process for jacquard anti-downy coated fabrics.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a preparation process for a small jacquard down-proof coated fabric, comprising the following steps: S1. Use polyester jacquard fabric as the base fabric; S2. Water-repellent treatment: A fluorine-free water-repellent agent is used to treat the front side of the base fabric to prevent the coating from seeping through and to improve the tear strength of the fabric. S3. Calendering treatment: Calendering is performed several times on the reverse side of the water-repellent fabric. S4. First layer of adhesive: Apply the first layer of adhesive to the reverse side of the calendered fabric. The first layer of adhesive is a non-ionic polypropylene mixture adhesive. Apply the adhesive evenly to the reverse side of the fabric and bake it in the first four sections of the oven. S5. Second layer of adhesive: After the first layer of adhesive has cured, a second layer of adhesive is applied to the surface. The second layer of adhesive is a non-ionic polyurethane mixture adhesive. The adhesive is applied evenly and then baked in the first four sections of the oven. S6. Cold pressing treatment: After the second layer of adhesive has cured, the fabric is subjected to cold pressing treatment under controlled temperature and pressure.
[0005] In the above scheme, in step S1, the base fabric is 20D lightweight polyester jacquard taffeta fabric, 50D polyester spring spun jacquard fabric, 30D lightweight polyester spring spun jacquard fabric, or 50D lightweight polyester taffeta jacquard fabric.
[0006] In the above scheme, in step S2, the fluorine-free water-repellent is a polyurethane water-repellent, a modified acrylic fluorine-free water-repellent, or a paraffin-modified fluorine-free water-repellent.
[0007] In the above scheme, in step S2, the fluorine-free water-repellent agent is Huntsman's Zelan R3 fluorine-free water-repellent agent, with a density of 40-60 g / L and a liquid retention rate of 50%-70%. After coating with the water-repellent agent, it is baked in an oven. The temperature of the four sections of the front oven gradually increases from the inlet to the rear oven. The temperatures of each section of the front oven are 100℃, 110℃, 120℃ and 130℃, respectively, and the baking time is 20-40 seconds. The temperature of the rear oven is 160℃, pH 4-5, and the baking time is 1-3 minutes.
[0008] In the above scheme, the first layer of adhesive includes 100 parts of nonionic polypropylene mixture, 2-3 parts of catalyst, and an appropriate amount of thickener. It is filtered with an ultra-fine mesh, and an adhesive tank stirring device is added to improve the fluidity of the adhesive. The adhesive is uniformly scraped onto the surface of the fabric at a certain speed. It is then baked in the first four ovens at temperatures of 90℃, 100℃, 120℃, and 140℃, with a machine speed of 18-22m / min, a blade distance of 4-5mm, and a base adhesive viscosity of 19000-21000mpa·s.
[0009] In the above scheme, the second layer of adhesive includes 100 parts of nonionic polyurethane mixture, 2-3 parts of catalyst, and an appropriate amount of thickener. It is filtered with an ultra-fine mesh, and an adhesive tank stirring device is added to improve the fluidity of the adhesive. The adhesive is uniformly scraped onto the surface of the fabric at a certain speed. It is then baked in the first four ovens at temperatures of 90℃, 100℃, 120℃, and 140℃, with a machine speed of 18-22m / min, a blade distance of 4-5mm, and a base adhesive viscosity of 11000-13000mpa·s.
[0010] The small jacquard anti-fleece coated fabric of the present invention adds a glue tank stirring device during the first and second glue coating processes to change the flow pattern of the coating glue in the production process, increase its fluidity, and improve the problem of defects such as color spots and color streaks caused by poor glue fluidity by filtering through an ultra-fine mesh, thereby improving the production yield.
[0011] In the above scheme, in step S3, the calendering temperature is 160℃, and the calendering process is repeated 3 times to flatten the yarn, shrink the fabric, reduce the gaps between the yarns, make it difficult for the subsequent coating to penetrate, and improve the down-proof effect of the fabric.
[0012] In the above scheme, in step S6, the temperature of the cold pressing treatment is 60℃, the speed is 20-30 m / min, the pressure is 80-100 kg / cm2, and the coating surface is pressed to make the fabric soft and light.
[0013] The second objective of this invention is to provide a small jacquard down-proof coated fabric.
[0014] This invention has the following positive effects: 1) The small jacquard down-proof coated fabric of this invention has a thin and lightweight coating, with a weight gain of only about 5 GSM, good adhesion, and a soft hand feel; 2) The small jacquard down-proof coated fabric of this invention has a soft hand feel. Through fluorine-free water-repellent pretreatment, hot-pressing treatment, and adjustment of coating viscosity, the fabric has minimal impact on tearing. After coating, the fabric tear resistance remains above 7N using the ISO13937-1 pendulum test; 3) The small jacquard down-proof coated fabric of this invention uses a polypropylene coating as the base coat, followed by a polyurethane coating. The polypropylene coating has high hardness, preventing yarn slippage and making it difficult for down to poke out. The polyurethane coating ensures good film-forming properties and elasticity, providing secondary reinforcement of down-proof performance. This results in the small jacquard fabric achieving down-proof performance according to EN 12132-1 1998, based on 80 / 20 grey duck down filling with 2 warp and 2 weft threads. The fabric achieves excellent down-proof performance. Implementation
[0015] The technical solution of the present invention will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] The preparation process of the small jacquard anti-fleece coated fabric of the present invention includes the following steps: S1, selecting a base fabric of polyester small jacquard fabric; the base fabric can be selected from polyester 20D lightweight small jacquard taffeta fabric, polyester 50D spring spun small jacquard fabric, polyester 30D lightweight spring spun small jacquard fabric, or polyester 50D lightweight polyester taffeta small jacquard fabric. For example, polyester 50D spring spun small jacquard fabric with a weight of 75GSM can be selected; the processing flow of the base fabric is: greige fabric, in-vat desizing, dyeing, dehydration, and water finishing.
[0017] S2. Water-repellent treatment: A fluorine-free water-repellent agent is used to treat the front side of the base fabric to prevent the coating from seeping through and to improve the tear strength of the fabric.
[0018] Fluorine-free water repellents can be selected from polyurethane-based water repellents, such as Huntsman's Zelan R3 fluorine-free water repellent, modified acrylic-based fluorine-free water repellents, such as Zhejiang Rihua's NR-7080, or paraffin-modified fluorine-free water repellents, such as Huntsman's Phobotex RSH, etc.
[0019] The density of the fluorine-free water-repellent agent is 40-60 g / L, and the liquid retention rate is between 50% and 70%. After coating with the water-repellent agent, it is baked in an oven. The temperature of the four sections of the front oven gradually increases from the inlet to the rear oven. The temperatures of each section of the front oven are 100℃, 110℃, 120℃ and 130℃, respectively, and the baking time is 20-40 seconds. The temperature of the rear oven is 160℃, pH 4-5, and the baking time is 1-3 minutes.
[0020] S3. Calendering treatment: The reverse side of the water-repellent fabric is calendered several times. The calendering temperature is 160℃, and the calendering treatment is performed 3 times. This flattens the yarn, shrinks the fabric, reduces the gaps between the yarns, makes it difficult for subsequent coatings to penetrate, and improves the down-proof effect of the fabric.
[0021] S4. First layer of adhesive: Apply the first layer of adhesive to the reverse side of the calendered fabric. The first layer of adhesive is a non-ionic polypropylene mixture adhesive. Apply the adhesive evenly to the reverse side of the fabric and bake it in the first four oven sections. The first layer of adhesive consists of 100 parts of non-ionic polypropylene mixture, 2-3 parts of catalyst, and an appropriate amount of thickener. It is filtered through an ultra-fine mesh and a stirring device is added to the adhesive tank to improve the fluidity of the adhesive. The adhesive is uniformly scraped onto the surface of the fabric at a certain speed and then baked in the first four oven sections at temperatures of 90℃, 100℃, 120℃, and 140℃, with a speed of 18-22m / min, a blade distance of 4-5mm, and a base adhesive viscosity of 19000-21000mpa·s.
[0022] The first layer of adhesive is a nonionic polypropylene mixture copolymerized from various vinyl monomers such as acrylates, acrylamide, and acrylonitrile in appropriate proportions. Based on the medium used, it can be classified as solvent-based or water-based; in this invention, an existing solvent-based nonionic polypropylene mixture can be used.
[0023] S5. Second layer of adhesive: After the first layer of adhesive has cured, a second layer of adhesive is applied to the surface. The second layer of adhesive is a non-ionic polyurethane mixture. The adhesive is applied evenly and then baked in the first four oven sections. The second layer of adhesive consists of 100 parts of non-ionic polyurethane mixture, 2-3 parts of catalyst, and an appropriate amount of thickener. It is filtered through an ultra-fine mesh and a stirring device is added to the adhesive tank to improve the fluidity of the adhesive. The adhesive is uniformly applied to the surface of the fabric at a certain speed and then baked in the first four oven sections at temperatures of 90℃, 100℃, 120℃, and 140℃, with a speed of 18-22m / min, a blade distance of 4-5mm, and a base adhesive viscosity of 11000-13000mpa·s.
[0024] The second layer of adhesive, made from a nonionic polyurethane mixture, can be selected from polyester-based polyurethane, polyether-based polyurethane, aromatic isocyanate-based polyurethane, or aliphatic isocyanate-based polyurethane. Based on the medium used, it can be classified as solvent-based or water-based. This invention can utilize existing nonionic solvent-based polyester-based polyurethane mixtures.
[0025] During the first and second coats of adhesive, a mixing device is added to the adhesive tank to alter the flow pattern of the adhesive during production, increasing its fluidity. Filtering through an ultra-fine mesh further improves defects such as color spots and streaks caused by poor adhesive flow, thereby increasing the yield rate. S6. Cold pressing treatment: After the second layer of adhesive has cured, the fabric is subjected to cold pressing treatment under controlled temperature and pressure. The cold pressing temperature is 60℃, the speed is 20-30 m / min, and the pressure is 80-100 kg / cm2. This process presses the coating surface, making the fabric soft and lightweight.
[0026] The preparation process of the small jacquard down-proof coated fabric of this invention produces a small jacquard down-proof fabric with a thin coating, a weight gain of only about 5 GSM, good adhesion, and a soft hand feel. The soft hand feel of the coating is minimized by fluorine-free water-repellent pretreatment, three hot-pressing cycles at 160℃, and adjustment of the coating viscosity. After coating, the fabric's tear resistance remains above 7N using the ISO13937-1 pendulum test. The addition of a glue tank stirring device during coating alters the flow pattern of the coating glue during production, increasing its fluidity. Ultra-fine mesh filtration improves defects such as color spots and streaks caused by poor glue fluidity, thus increasing the production yield. The coated fabric uses a polypropylene base coat, followed by a polyurethane coating. The polypropylene coating is highly rigid, preventing yarn slippage and minimizing down leakage. The polyurethane coating ensures excellent film-forming properties and elasticity, further enhancing down-proofness. This results in a down-proof performance meeting EN 12132-1 1998 standards for this jacquard fabric, based on 80 / 20 grey duck down filling (2 warp and 2 weft threads). The fabric achieves exceptional down-proof properties.
[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A process for the production of a small-jacquard, anti-pilling coated fabric, characterized by, It includes the following steps: S1. Use polyester jacquard fabric as the base fabric; S2. Water-repellent treatment: A fluorine-free water-repellent agent is used to treat the front side of the base fabric to prevent the coating from seeping through and to improve the tear strength of the fabric. S3. Calendering treatment: Calendering is performed several times on the reverse side of the water-repellent fabric. S4. First layer of adhesive: Apply the first layer of adhesive to the reverse side of the calendered fabric. The first layer of adhesive is a non-ionic polypropylene mixture adhesive. Apply the adhesive evenly to the reverse side of the fabric and bake it in the first four sections of the oven. S5. Second layer of adhesive: After the first layer of adhesive has cured, a second layer of adhesive is applied to the surface. The second layer of adhesive is a non-ionic polyurethane mixture adhesive. The adhesive is applied evenly and then baked in the first four sections of the oven. S6. Cold pressing treatment: After the second layer of adhesive has cured, the fabric is subjected to cold pressing treatment under controlled temperature and pressure. In step S1, the base fabric is 20D lightweight polyester jacquard taffeta, 50D polyester spring spun jacquard, 30D lightweight polyester spring spun jacquard, or 50D lightweight polyester taffeta jacquard. In step S2, the concentration of the fluorine-free water-repellent agent is 40-60 g / L, and the liquid retention rate is between 50% and 70%. After coating with the water-repellent agent, the mixture is baked in an oven. The temperature of the four sections of the front oven gradually increases from the inlet to the rear oven. The temperatures of each section of the front oven are 100℃, 110℃, 120℃, and 130℃, respectively, and the baking time is 20-40 seconds. The temperature of the rear oven is 160℃, the pH is 4-5, and the baking time is 1-3 minutes.
2. A process for the production of a small-jacquard no-pill coating fabric according to claim 1, characterized in that: In step S2, the fluorine-free water-repellent is a polyurethane-based water-repellent, a modified acrylic-based fluorine-free water-repellent, or a paraffin-modified fluorine-free water-repellent.
3. The preparation process of the small jacquard anti-fleece coated fabric according to claim 1, characterized in that: The first layer of adhesive comprises 100 parts of nonionic polypropylene mixture, 2-3 parts of catalyst, and a thickener. It is filtered through an ultra-fine mesh and a stirring device is added to the adhesive tank to improve the fluidity of the adhesive. The first layer of adhesive is uniformly applied to the surface of the fabric and then baked in the first four ovens at temperatures of 90℃, 100℃, 120℃, and 140℃, with a machine speed of 18-22m / min and a blade distance of 4-5mm. The viscosity of the first layer of adhesive is 19000-21000mPa·s.
4. The preparation process of the small jacquard anti-fleece coated fabric according to claim 1, characterized in that: The second layer of adhesive comprises 100 parts of a nonionic polyurethane mixture, 2-3 parts of a catalyst, and a thickener. It is filtered through an ultra-fine mesh and equipped with a stirring device in the adhesive tank to improve its fluidity. The second layer of adhesive is uniformly applied to the surface of the fabric and then baked in four ovens at temperatures of 90℃, 100℃, 120℃, and 140℃, with a machine speed of 18-22 m / min and a blade distance of 4-5 mm. The viscosity of the second layer of adhesive is 11000-13000 mPa·s.
5. The preparation process of the small jacquard anti-fleece coated fabric according to claim 1, characterized in that: In step S3, the calendering temperature is 160℃, and the calendering process is repeated 3 times to flatten the yarn, shrink the fabric, reduce the gaps between the yarns, make it difficult for the subsequent coating to penetrate, and improve the down-proof effect of the fabric.
6. The preparation process of the small jacquard anti-fleece coated fabric according to claim 1, characterized in that: In step S6, the cold pressing temperature is 60℃, the speed is 20-30 m / min, and the pressure is 80-100 kg / cm2, pressing the coating surface to make the fabric soft and light.
7. A jacquard anti-fleece coated fabric made using the preparation process described in any one of claims 1-6.