Water-based impregnated fabric and production process thereof

Abstract

The invention discloses a water-based impregnated fabric and a production process thereof. The water-based impregnated fabric is formed by weaving warp yarns and weft yarns, and the water-based impregnated fabric is subjected to impregnation, drying, sanding, machine cylinder scouring and shaping treatment; the warp yarns and the weft yarns comprise water-repellent yarns and water-soluble yarns, and the water-repellent yarns are made of fibers with smooth surfaces; impregnation slurry used in the impregnation treatment is aqueous impregnation slurry; the water-soluble yarns are dissolved off after being subjected to machine cylinder scouring treatment; pores exist among the yarns in the water-based impregnated fabric after the setting treatment. The water-based impregnated fabric has the advantages of being breathable and soft, the skin film of the fabric is not prone to cracking, and meanwhile the production process of the water-based impregnated fabric is environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a water-based impregnated fabric and a production process thereof. Background Art

[0002] Most sofas and leather clothes currently used are imitation leather fabrics, which are generally made by impregnating the fabric with resin slurry. Impregnation resin slurry generally includes oily impregnation slurry and water-based impregnation slurry; among them, oily impregnation slurry such as acrylate impregnation slurry has more flexible segments on its acrylate polymer molecular chain, such as ester groups, which can rotate freely, making the molecular chain as a whole relatively soft, but the process of using it to produce imitation leather fabrics is harmful to the environment. Water-based impregnation slurry, such as water-based PU impregnation slurry, because the distance between polymer particles in its aqueous system decreases after water evaporates, they approach each other and agglomerate to form a continuous film; this film structure is often more regular, and the arrangement between the molecular chains is relatively tight, so the fabric feels harder after impregnation. Therefore, it is necessary to develop a simulated leather impregnation fabric, which is not only environmentally friendly, but also breathable and soft. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a water-based impregnated fabric and a production process thereof; the water-based impregnated fabric has the characteristics of being breathable and soft, and its film is not prone to cracks, and its production process is environmentally friendly.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] On the one hand, the present invention provides a water-based impregnated fabric, which is woven with warp yarn and weft yarn, and is subjected to impregnation, drying, sanding, machine-cylinder cloth training, and shaping treatment; the warp yarn and the weft yarn both contain water-repellent yarn and water-soluble yarn, and the water-repellent yarn is made of fibers with smooth surfaces; the impregnation slurry used for the impregnation treatment is a water-based impregnation slurry; after the machine-cylinder cloth training treatment, the water-soluble yarn is dissolved; and there are pores between the yarns in the water-based impregnated fabric after the shaping treatment.

[0006] Furthermore, the fabric structure is a plain weave.

[0007] Furthermore, the specifications of the warp yarn and the weft yarn are both 105D / 96F, wherein among the 96 monofilaments, 26 monofilaments are water-repellent yarns, 20 monofilaments are water-soluble yarns, and the water-repellent yarns and the water-soluble yarns are unevenly distributed.

[0008] Furthermore, the water-repellent yarn is yarn treated with a water-repellent finishing agent, and the water-soluble yarn is PVA yarn.

[0009] Furthermore, the fabric is subjected to an open-width refining treatment before the impregnation treatment.

[0010] On the other hand, the present invention provides a production process of water-based impregnated fabrics, including fabric base cloth weaving, open-width refining, water-based impregnation slurry impregnation treatment, drying, sanding, cylinder cloth training, and shaping treatment.

[0011] Furthermore, in the production process, the process conditions for open-width refining are: the woven base fabric is sequentially passed through refining tanks with temperatures of 60°C, 70°C, 80°C, 80°C, and 60°C, at a speed of 20m / min and a tension of 3kg.

[0012] Furthermore, in the production process, the aqueous impregnation slurry is an aqueous PU slurry, which includes the following components in terms of mass percentage: 55% to 85% deionized water, 10% to 40% aqueous PU resin and 1% to 8% additives.

[0013] Furthermore, in the production process, the drying process includes low-temperature drying and high-temperature drying. The temperature of the low-temperature drying is 50°C-70°C, and the drying time is 20-30 minutes; the temperature of the high-temperature drying is 100°C-120°C, and the drying time is 5-100 minutes.

[0014] Furthermore, in the production process, the process conditions for the cylinder cloth training are: heating to 110°C at a heating rate of 1°C / min, keeping warm for 30 minutes, and then cooling to room temperature at a cooling rate of 1.5°C / min; the process conditions for the shaping treatment are: shaping temperature of 130°C and vehicle speed of 20m / min.

[0015] Beneficial effects of the present invention:

[0016] The warp yarn and the weft yarn in the fabric of the present invention both contain water-repellent yarn and water-soluble yarn. During impregnation, the water-repellent yarn makes it difficult for water molecules to enter the pores inside the yarn and between the fibers, so that the aqueous impregnation slurry does not enter the pores inside the yarn and between the fibers, leaving gaps inside the yarn; after high-temperature cloth training treatment, the water-soluble yarn is dissolved, so that the pores between the yarns become larger, and the gaps inside the yarn make the fabric softer; in addition, the water-repellent yarn is made of fibers with smooth surfaces, which can produce slippage, thereby forming fine pores on the surface, making the fabric breathable; furthermore, the fabric of the present invention is a plain weave with good tightness, and is not prone to cracks when pulled apart after impregnation and film formation; the warp yarn and the weft yarn of the present invention have the same specifications, so that the fabric has similar physical properties such as strength, elasticity and feel in the warp and weft directions.

[0017] In general, the water-based impregnated fabric of the present invention has the advantages of being breathable and soft, and its film is not prone to cracks. At the same time, since it uses water-based impregnated slurry, its production process is environmentally friendly. DETAILED DESCRIPTION

[0018] The technical solutions in the present invention will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides a water-based impregnated fabric, which is woven with warp yarns and weft yarns, and is subjected to impregnation, drying, sanding, machine-cylinder cloth-training and shaping treatments; the warp yarns and weft yarns both contain water-repellent yarns and water-soluble yarns, and the water-repellent yarns are made of fibers with smooth surfaces; the impregnation slurry used for the impregnation treatment is a water-based impregnation slurry; after the machine-cylinder cloth-training treatment, the water-soluble yarns are dissolved; and there are pores between the yarns in the water-based impregnated fabric after the shaping treatment.

[0020] Wherein, the fabric structure is plain weave.

[0021] The specifications of the warp yarn and the weft yarn are both 105D / 96F. Among the 96 monofilaments, 26 monofilaments are water-repellent yarns, 20 monofilaments are water-soluble yarns, and the remaining yarns are ordinary yarns. The water-repellent yarns and the water-soluble yarns are unevenly distributed.

[0022] The water-repellent yarn is yarn treated with a water-repellent finishing agent, and the water-soluble yarn is PVA yarn.

[0023] Furthermore, the fabric is subjected to an open-width refining treatment before being subjected to the impregnation treatment.

[0024] The production process of the water-based impregnated fabric comprises the following steps: fabric base fabric weaving, flat-width refining, water-based impregnated slurry impregnation treatment, drying, sanding, machine cylinder cloth training and shaping treatment.

[0025] Among them, the process conditions of open-width refining are: the woven base fabric is passed through refining tanks with temperatures of 60°C, 70°C, 80°C, 80°C, and 60°C in sequence, with a speed of 20m / min and a tension of 3kg.

[0026] The aqueous impregnation slurry is an aqueous PU slurry, which includes the following components by mass percentage: 55% to 85% deionized water, 10% to 40% aqueous PU resin and 1% to 8% additives. The impregnation treatment process is that the base fabric passes through an impregnation tank containing two rollers at a certain speed, and the aqueous PU slurry in the impregnation tank fully impregnates the base fabric.

[0027] The drying process includes low-temperature drying and high-temperature drying. The temperature of low-temperature drying is 50°C-70°C, and the drying time is 20-30 minutes; the temperature of high-temperature drying is 100°C-120°C, and the drying time is 5-100 minutes.

[0028] Among them, the process conditions for cylinder training are: heating to 110℃ at a heating rate of 1℃ / min, keeping warm for 30 minutes, and then cooling to room temperature at a cooling rate of 1.5℃ / min; the process conditions for shaping treatment are: shaping temperature of 130℃ and vehicle speed of 20m / min.

[0029] The water-based impregnated fabric can also be dyed according to demand after sanding.

[0030] Example 1

[0031] The water-based impregnated fabric of Example 1 is woven with warp yarn and weft yarn according to plain weave, and is subjected to open-width refining, impregnation, drying, sanding, machine-cylinder cloth training, and shaping treatment; the warp yarn and weft yarn both contain water-repellent yarn and water-soluble yarn, and the water-repellent yarn is made of fibers with smooth surfaces; the impregnation slurry used for the impregnation treatment is an aqueous impregnation slurry; after the machine-cylinder cloth training treatment, the water-soluble yarn is dissolved; there are pores between the yarns in the water-based impregnated fabric after the shaping treatment.

[0032] Among them, the specifications of the warp yarn and weft yarn are both 105D / 96F. Among the 96 monofilaments, 26 monofilaments are water-repellent polyester yarns, 20 monofilaments are water-soluble PVA yarns, and the rest are ordinary PET yarns, and the water-repellent yarns and water-soluble yarns are unevenly distributed.

[0033] The water-repellent yarn is a polyester yarn treated with a water-repellent finishing agent, and the water-soluble yarn is a PVA yarn.

[0034] The production process of the water-based impregnated fabric comprises the following steps: sequentially weaving a fabric base cloth, refining in open width, impregnating with water-based impregnated slurry, drying, sanding, rinsing in a machine cylinder, and shaping.

[0035] (1) Fabric base fabric weaving: warp yarn and weft yarn are used to weave the base fabric according to the plain weave structure; the specifications of the warp yarn and the weft yarn are both 105D / 96F, among the 96 monofilaments, 26 monofilaments are water-repellent polyester yarns, 20 monofilaments are water-soluble PVA yarns, and the rest are ordinary PET yarns, and the water-repellent yarns and water-soluble yarns are unevenly distributed;

[0036] (2) Open-width refining: The woven base fabric is passed through a refining tank containing a refining agent at temperatures of 60°C, 70°C, 80°C, 80°C, and 60°C in sequence, at a speed of 20 m / min and a tension of 3 kg;

[0037] (3) Water-based impregnation slurry impregnation treatment: the base fabric after flat-width refining is passed through an impregnation tank containing two rollers at a certain speed, and the water-based PU slurry in the impregnation tank fully impregnates the base fabric; the water-based PU slurry includes the following components in terms of mass percentage: 65% deionized water, 30% water-based PU resin and 5% additives. Among them, the additives include leveling agents and defoaming agents;

[0038] (4) Drying: Dry the impregnated fabric. The drying process includes low-temperature drying and high-temperature drying. The low-temperature drying temperature is 60°C and the drying time is 25 minutes. The high-temperature drying temperature is 100°C and the drying time is 30 minutes.

[0039] (5) Cylinder training: The fabric is placed in a cylinder containing an aqueous solution of 2% refining agent, 2% chelating agent, and 1% liquid alkali for training. The process conditions are: heating to 110°C at a heating rate of 1°C / min, keeping the temperature for 30 minutes, and then cooling to room temperature at a cooling rate of 1.5°C / min;

[0040] (6) Forming treatment: The fabric is subjected to forming treatment at a temperature of 130°C and a speed of 20 m / min.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water-based impregnated fabric, characterized in that: The fabric is woven with warp yarn and weft yarn, and is treated by impregnation, drying, sanding, machine-cylinder cloth training, and shaping; the warp yarn and weft yarn both contain water-repellent yarn and water-soluble yarn, and the water-repellent yarn is made of fibers with smooth surfaces; the impregnation slurry used for the impregnation treatment is an aqueous impregnation slurry; after the machine-cylinder cloth training treatment, the water-soluble yarn is dissolved; there are pores between the yarns in the water-based impregnated fabric after the shaping treatment.

2. The water-based impregnated fabric according to claim 1, characterized in that: The fabric structure is a plain weave.

3. The water-based impregnated fabric according to claim 1, characterized in that: The specifications of the warp yarn and the weft yarn are both 105D / 96F, wherein among the 96 monofilaments, 26 monofilaments are water-repellent yarns, 20 monofilaments are water-soluble yarns, and the water-repellent yarns and the water-soluble yarns are unevenly distributed.

4. The water-based impregnated fabric according to claim 1, characterized in that: The water-repellent yarn is yarn treated with a water-repellent finishing agent, and the water-soluble yarn is PVA yarn.

5. The water-based impregnated fabric according to claim 1, characterized in that: The fabric is also subjected to an open-width refining treatment before being subjected to the impregnation treatment.

6. A process for producing a water-based impregnated fabric according to any one of claims 1 to 5, characterized in that: It includes fabric base cloth weaving, open width refining, water-based impregnation slurry impregnation treatment, drying, sanding, cylinder cloth training and shaping treatment.

7. The production process of the water-based impregnated fabric according to claim 6, characterized in that: The process conditions for open-width refining are: the woven base fabric is passed through refining tanks with temperatures of 60°C, 70°C, 80°C, 80°C, and 60°C in sequence, with a speed of 20m / min and a tension of 3kg.

8. The production process of the water-based impregnated fabric according to claim 6, characterized in that: The aqueous impregnation slurry is an aqueous PU slurry, which comprises the following components in terms of mass percentage: 55% to 85% of deionized water, 10% to 40% of aqueous PU resin and 1% to 8% of auxiliary agent.

9. The production process of the water-based impregnated fabric according to claim 6, characterized in that: The drying process includes low-temperature drying and high-temperature drying. The temperature of low-temperature drying is 50℃-70℃, and the drying time is 20-30min; the temperature of high-temperature drying is 100℃-120℃, and the drying time is 5-100min.

10. The production process of water-based impregnated fabric according to claim 6, characterized in that: The process conditions for cylinder cloth training are: heating to 110℃ at a heating rate of 1℃ / min, keeping warm for 30min, and then cooling to room temperature at a cooling rate of 1.5℃ / min; the process conditions for shaping treatment are: shaping temperature of 130℃ and vehicle speed of 20m / min.