Production process of fluoride-free washable waterproof fabric

Abstract

The invention provides a production process of a fluoride-free washable waterproof fabric, and relates to the technical field of fabric production. The production process of the fluoride-free washable waterproof fabric comprises the following steps: selecting natural or synthetic fibers with high hydrophobicity as a fabric base cloth, desizing, boiling off and bleaching the fabric base cloth, and preshrinking, sizing, dyeing and softening the fabric base cloth at the same time; the preparation method comprises the following steps: mixing a fluoride-free waterproof agent and an auxiliary agent according to a specific ratio, adding deionized water, and uniformly stirring to form a waterproof agent emulsion; uniformly applying the waterproof agent emulsion to the surface of the fabric; the fabric is placed at the temperature of 100-120 DEG C to be pre-dried for 1-2 minutes; baking the pre-baked fabric at 150-180 DEG C for 2-3 minutes, so that the coating is fixed on the fabric to form a stable waterproof layer; and carrying out softening finishing and antistatic finishing on the baked fabric. The fluorine-free waterproof agent and the auxiliary agent are added, so that the problem of environmental pollution possibly caused by a traditional fluorine-containing waterproof agent is avoided, and the requirements of current environmental protection laws and regulations and sustainable development are met.

Description

Technical Field

[0001] The invention relates to the technical field of fabric production, in particular to a production process of fluorine-free, washable and waterproof fabric. Background Art

[0002] With the continuous advancement of technology, people's functional demands on textiles are getting higher and higher. Textiles are inevitably exposed to water and oil stains during wearing or using, so water-repellent textiles have entered people's lives.

[0003] In the current waterproof fabric market, commonly used waterproof agents include fluorine-containing waterproof agents and fluorine-free waterproof agents. Although fluorine-containing waterproof agents have good waterproof effects, they contain fluorine elements and cause certain pollution to the environment. Fluorine-free waterproof agents have environmental advantages because they do not contain fluorine, but they have obvious defects. The waterproof performance of the fabrics produced is relatively poor and they are not washable. Generally, fabrics on the market need to maintain waterproof performance within 50 washes, but existing fluorine-free waterproof agents are difficult to meet this requirement. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a production process for fluorine-free, washable and waterproof fabrics, which solves the problems raised by the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the present invention is implemented by the following technical scheme: a production process of fluorine-free washable waterproof fabric, comprising the following steps:

[0008] Step 1: Fabric pretreatment:

[0009] Select natural or synthetic fibers with high hydrophobicity as the fabric base, desize, scour and bleach them, pre-shrink, shape, dye and soften them, and then dry them to a moisture content of 8%-12%;

[0010] Step 2: Waterproofing agent configuration:

[0011] Mix the fluorine-free waterproofing agent and the auxiliary agent in a specific proportion, add deionized water, and stir evenly at 30-40°C and 800-1200r / min to form a waterproofing agent emulsion;

[0012] Step 3: Coating treatment:

[0013] Apply the above-mentioned waterproofing agent emulsion evenly to the surface of the fabric;

[0014] Step 4: Pre-baking:

[0015] Pre-dry the above fabrics at 100-120°C for 1-2 minutes;

[0016] Step 5: High temperature baking:

[0017] The pre-baked fabric is baked at 150-180℃ for 2-3 minutes to fix the coating on the fabric and form a stable waterproof layer;

[0018] Step 6: Finishing:

[0019] The baked fabrics are softened and antistatically treated.

[0020] Preferably, in step one, the base fabric material is one of polyester fiber fabric, cotton and polyester fiber blended fabric or nylon fabric; and the moisture content is 10%.

[0021] Preferably, in step 2, the components of the fluorine-free waterproofing agent and the auxiliary agent are: 5-10 parts of fluorine-free waterproofing agent and 3-9 parts of auxiliary agent; the fluorine-free waterproofing agent includes but is not limited to silicone polymer, acrylic resin and nano-scale filler, and the auxiliary agent includes but is not limited to dispersant, thickener and defoaming agent.

[0022] Preferably, the dispersant includes 1-3 parts of a polycarboxylate dispersant, the thickener includes 1-3 parts of hydroxyethyl cellulose, and the defoamer includes 1-3 parts of a silicon-based defoamer.

[0023] Preferably, in step three, the coating treatment is a padding method: immersing the pretreated fabric in a waterproofing agent emulsion for 30-60 seconds, and then padding the liquid with a padder to control the padding rate to be 60%-80%.

[0024] Preferably, in step three, the coating treatment is a spraying method: the pretreated fabric is placed under a spraying device, and the waterproofing agent emulsion is evenly sprayed through a high-pressure nozzle to ensure that the coating evenly covers the surface of the fabric.

[0025] Preferably, in step three, the coating treatment is a transfer coating method: the pretreated fabric is tightly fitted with a transfer paper containing a waterproofing agent emulsion, the waterproofing agent is transferred to the fabric by hot pressing transfer, and then the transfer paper is peeled off to complete the application of the coating.

[0026] Preferably, in step six, the softening finishing uses an environmentally friendly softener, and the antistatic finishing uses a conventional antistatic agent.

[0027] (III) Beneficial effects

[0028] The present invention provides a production process for fluorine-free, washable and waterproof fabrics. It has the following beneficial effects:

[0029] The present invention adopts a fluorine-free waterproof agent, avoids the pollution of the environment by fluorine-containing waterproof agents, meets environmental protection requirements, and helps promote the sustainable development of the textile industry. Moreover, through the addition of special auxiliaries and optimized production processes, the waterproof performance of the fluorine-free waterproof fabric reaches or even exceeds the level of similar products, and can still maintain a good waterproof effect after multiple washings, thereby extending the service life of the fabric and improving the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the production process of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0032] Embodiment 1:

[0033] like Figure 1 As shown, the embodiment of the present invention provides a production process of fluorine-free washable waterproof fabric, comprising the following steps:

[0034] Step 1: Fabric pretreatment:

[0035] A natural or synthetic fiber with high hydrophobicity is selected as the fabric base fabric. Specifically, the base fabric material is one of polyester fiber fabric, cotton and polyester fiber blended fabric or nylon fabric, and the base fabric material is desized, scour and bleached, and the base fabric material is pre-shrunk, shaped, dyed and softened, and then dried to a moisture content of 8%;

[0036] Step 2: Waterproofing agent configuration:

[0037] Mix the fluorine-free waterproofing agent and the auxiliary agent in a specific ratio. Specifically, the components of the fluorine-free waterproofing agent and the auxiliary agent are: 5 parts of the fluorine-free waterproofing agent and 3 parts of the auxiliary agent; wherein the fluorine-free waterproofing agent includes an organic silicon polymer, an acrylic resin and a nano-scale filler, and the auxiliary agent includes a dispersant, a thickener and a defoamer. Specifically, the dispersant includes 1 part of a polycarboxylate dispersant, the thickener includes 1 part of hydroxyethyl cellulose, and the defoamer includes 1 part of a silicon-based defoamer; then add deionized water, stir evenly at 30° C. and 800 r / min to form a waterproofing agent emulsion;

[0038] Step 3: Coating treatment:

[0039] The waterproofing agent emulsion is uniformly applied to the surface of the fabric. Specifically, the coating treatment is a padding method: the pretreated fabric is immersed in the waterproofing agent emulsion for 45 seconds, and then the liquid is squeezed out with a padder, and the rolling rate is controlled to be 70%;

[0040] Step 4: Pre-baking:

[0041] Pre-bake the above fabric at 100°C for 1 minute;

[0042] Step 5: High temperature baking:

[0043] The pre-baked fabric is baked at 150°C for 2 minutes to fix the coating on the fabric and form a stable waterproof layer;

[0044] Step 6: Finishing:

[0045] The baked fabric is subjected to softening finishing and antistatic finishing. Specifically, the softening finishing uses an environmentally friendly softener, and the antistatic finishing uses a conventional antistatic agent.

[0046] Embodiment 2:

[0047] like Figure 1 As shown, the embodiment of the present invention provides a production process of fluorine-free washable waterproof fabric, comprising the following steps:

[0048] Step 1: Fabric pretreatment:

[0049] A natural or synthetic fiber with high hydrophobicity is selected as the fabric base fabric. Specifically, the base fabric material is one of polyester fiber fabric, cotton and polyester fiber blended fabric or nylon fabric, and the base fabric material is desized, scour and bleached, and the base fabric material is pre-shrunk, shaped, dyed and softened, and then dried to a moisture content of 10%;

[0050] Step 2: Waterproofing agent configuration:

[0051] Mixing the fluorine-free waterproofing agent and the auxiliary agent in a specific ratio, specifically, the components of the fluorine-free waterproofing agent and the auxiliary agent are: 8 parts of the fluorine-free waterproofing agent and 6 parts of the auxiliary agent; wherein the fluorine-free waterproofing agent includes an organic silicon polymer, an acrylic resin and a nano-scale filler, and the auxiliary agent includes a dispersant, a thickener and a defoamer, specifically, the dispersant includes 2 parts of a polycarboxylate dispersant, the thickener includes 2 parts of hydroxyethyl cellulose, and the defoamer includes 2 parts of a silicon-based defoamer; then adding deionized water, stirring evenly at 35° C. and 1000 r / min to form a waterproofing agent emulsion;

[0052] Step 3: Coating treatment:

[0053] The waterproofing agent emulsion is evenly applied to the surface of the fabric. Specifically, the coating treatment is a spraying method: the pretreated fabric is placed under the spraying equipment, and the waterproofing agent emulsion is evenly sprayed through a high-pressure nozzle to ensure that the coating evenly covers the surface of the fabric;

[0054] Step 4: Pre-baking:

[0055] Pre-dry the above fabric at 110°C for 2 minutes;

[0056] Step 5: High temperature baking:

[0057] The pre-baked fabric is baked at 160°C for 2 minutes to fix the coating on the fabric and form a stable waterproof layer;

[0058] Step 6: Finishing:

[0059] The baked fabric is subjected to softening finishing and antistatic finishing. Specifically, the softening finishing uses an environmentally friendly softener, and the antistatic finishing uses a conventional antistatic agent.

[0060] Embodiment three:

[0061] like Figure 1 As shown, the embodiment of the present invention provides a production process of fluorine-free washable waterproof fabric, comprising the following steps:

[0062] Step 1: Fabric pretreatment:

[0063] A natural or synthetic fiber with high hydrophobicity is selected as the fabric base fabric. Specifically, the base fabric material is one of polyester fiber fabric, cotton and polyester fiber blended fabric or nylon fabric, and the base fabric material is desized, scour and bleached, and the base fabric material is pre-shrunk, shaped, dyed and softened, and then dried to a moisture content of 12%;

[0064] Step 2: Waterproofing agent configuration:

[0065] Mix the fluorine-free waterproofing agent and the auxiliary agent in a specific ratio. Specifically, the components of the fluorine-free waterproofing agent and the auxiliary agent are: 10 parts of the fluorine-free waterproofing agent and 9 parts of the auxiliary agent; wherein the fluorine-free waterproofing agent includes an organic silicon polymer, an acrylic resin and a nano-scale filler, and the auxiliary agent includes a dispersant, a thickener and a defoamer. Specifically, the dispersant includes 3 parts of a polycarboxylate dispersant, the thickener includes 3 parts of hydroxyethyl cellulose, and the defoamer includes 3 parts of a silicon-based defoamer; then add deionized water, stir evenly at 40° C. and 1200 r / min to form a waterproofing agent emulsion;

[0066] Step 3: Coating treatment:

[0067] The waterproofing agent emulsion is uniformly applied to the surface of the fabric. Specifically, the coating treatment is a transfer coating method: the pretreated fabric is closely attached to the transfer paper containing the waterproofing agent emulsion, the waterproofing agent is transferred to the fabric by hot pressing transfer, and then the transfer paper is peeled off to complete the coating application;

[0068] Step 4: Pre-baking:

[0069] Pre-dry the above fabric at 120°C for 2 minutes;

[0070] Step 5: High temperature baking:

[0071] The pre-baked fabric is baked at 180°C for 3 minutes to fix the coating on the fabric and form a stable waterproof layer;

[0072] Step 6: Finishing:

[0073] The baked fabric is subjected to softening finishing and antistatic finishing. Specifically, the softening finishing uses an environmentally friendly softener, and the antistatic finishing uses a conventional antistatic agent.

[0074] Comparative Example 1:

[0075] A production process of a fluorine-free, washable and waterproof fabric comprises the following steps:

[0076] Step 1: Fabric pretreatment:

[0077] A natural or synthetic fiber with high hydrophobicity is selected as the fabric base fabric. Specifically, the base fabric material is one of polyester fiber fabric, cotton and polyester fiber blended fabric or nylon fabric, and the base fabric material is desized, scour and bleached, and the base fabric material is pre-shrunk, shaped, dyed and softened, and then dried to a moisture content of 8%;

[0078] Step 2: Coating treatment:

[0079] Apply ordinary waterproofing agent evenly to the surface of the fabric. Specifically, the coating treatment is a padding method: immerse the pretreated fabric in the waterproofing agent emulsion for 45 seconds, and then use a padding car to squeeze out the liquid, and control the rolling rate to be 70%;

[0080] Step 3: Pre-baking:

[0081] Pre-bake the above fabric at 100°C for 1 minute;

[0082] Step 4: High temperature baking:

[0083] The pre-baked fabric is baked at 150°C for 2 minutes to fix the coating on the fabric and form a stable waterproof layer;

[0084] Step 5: Finishing:

[0085] The baked fabric is subjected to softening finishing and antistatic finishing. Specifically, the softening finishing uses an environmentally friendly softener, and the antistatic finishing uses a conventional antistatic agent.

[0086] Comparative Example 2:

[0087] The difference between this comparative example and comparative example 1 is that the ordinary waterproofing agent in step 2 is replaced with a fluorine-free waterproofing agent, and the other steps remain unchanged.

[0088] Experimental example:

[0089] The fabrics produced in Examples 1, 2, 3 and Comparative Examples 1 and 2 were tested for performance, and the results are shown in the following table:

[0090]

[0091]

[0092] It can be seen from the above table that the fluorine-free water-washable waterproof fabric produced by this embodiment has significant environmental advantages and excellent waterproof performance compared with the comparative example. Specifically, the fabrics of Examples 1, 2, and 3 all reached a high environmental protection level, and their waterproof rates were all above 99%, and the hydrostatic pressure retention rates were all over 89%, which shows that the fabrics can still maintain a good waterproof effect after multiple washings. In contrast, although the fabric of Comparative Example 1 uses a common waterproofing agent, its environmental protection level is low, and its waterproof rate and hydrostatic pressure retention rate are significantly lower than those of the embodiment, which shows that the common waterproofing agent is insufficient in environmental protection performance and long-term waterproof effect. Although Comparative Example 2 uses a fluorine-free waterproofing agent, its environmental protection level and waterproof performance are still not as good as those of the embodiment, which may be because the formula and treatment process of the fluorine-free waterproofing agent fail to reach the optimization level of the present invention. Therefore, the fluorine-free water-washable waterproof fabric production process provided by the present invention not only meets environmental protection requirements, but also significantly improves the waterproof performance and durability of the fabric, and has high practical value and market competitiveness.

[0093] In summary, the fluorine-free, water-resistant, and waterproof fabric produced by the production process of the fluorine-free, water-resistant, and waterproof fabric of the present invention has the following characteristics:

[0094] 1. Significantly improved environmental performance: Due to the use of fluorine-free waterproofing agents and additives, the environmental pollution problems that may be caused by traditional fluorine-containing waterproofing agents are avoided, which complies with current environmental protection regulations and sustainable development requirements.

[0095] 2. Excellent waterproof performance: Through specific process steps, such as fabric pretreatment, coating treatment, high-temperature baking, etc., a stable waterproof layer is formed on the fabric surface, thereby achieving a high waterproof rate and hydrostatic pressure retention rate, meeting the high requirements for waterproof performance in daily use.

[0096] 3. Excellent washability: After high-temperature baking and finishing, the waterproof layer of the fabric is more solid and can withstand multiple washings without affecting its waterproof performance, thus extending the service life of the fabric.

[0097] 4. Both comfort and functionality are important: In the finishing process of the fabric, in addition to antistatic finishing, environmentally friendly softeners are also used to ensure that the fabric has good hand feel and wearing comfort while maintaining waterproof properties.

[0098] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production process for fluorine-free washable waterproof fabric, characterized by: The following steps are involved: Step 1: Fabric pretreatment: Select natural or synthetic fibers with high hydrophobicity as fabric base fabrics, desize, scour and bleach them, pre-shrink, shape, dye and soften them, and then dry them to a moisture content of 8%-12%; Step 2: Waterproofing agent configuration: Mix the fluorine-free waterproofing agent and the auxiliary agent in a specific proportion, add deionized water, and stir evenly at 30-40°C and 800-1200r / min to form a waterproofing agent emulsion; Step 3: Coating treatment: Apply the above-mentioned waterproofing agent emulsion evenly to the surface of the fabric; Step 4: Pre-baking: Pre-dry the above fabrics at 100-120°C for 1-2 minutes; Step 5: High temperature baking: The pre-baked fabric is baked at 150-180℃ for 2-3 minutes to fix the coating on the fabric and form a stable waterproof layer; Step 6: Finishing: The baked fabrics are softened and antistatically treated.

2. The production process of a fluorine-free washable waterproof fabric according to claim 1, characterized in that: In step 1, the base fabric material is one of polyester fiber fabric, cotton and polyester fiber blended fabric or nylon fabric; and the moisture content is 10%.

3. The production process of a fluorine-free washable waterproof fabric according to claim 1, characterized in that: In step 2, the components of the fluorine-free waterproofing agent and the auxiliary agent are: 5-10 parts of fluorine-free waterproofing agent and 3-9 parts of auxiliary agent; the fluorine-free waterproofing agent includes but is not limited to silicone polymer, acrylic resin and nano-scale filler, and the auxiliary agent includes but is not limited to dispersant, thickener and defoamer.

4. The production process of a fluorine-free washable waterproof fabric according to claim 3, characterized in that: The dispersant includes 1-3 parts of a polycarboxylate dispersant, the thickener includes 1-3 parts of hydroxyethyl cellulose, and the defoamer includes 1-3 parts of a silicon-based defoamer.

5. The production process of a fluorine-free washable waterproof fabric according to claim 1, characterized in that: In step three, the coating treatment is a padding method: the pretreated fabric is immersed in the waterproof agent emulsion for 30-60 seconds, and then the liquid is squeezed out with a padder, and the rolling rate is controlled to be 60%-80%.

6. The production process of a fluorine-free washable waterproof fabric according to claim 1, characterized in that: In step three, the coating treatment is a spraying method: the pretreated fabric is placed under the spraying equipment, and the waterproofing agent emulsion is evenly sprayed through a high-pressure nozzle to ensure that the coating evenly covers the surface of the fabric.

7. The production process of a fluorine-free washable waterproof fabric according to claim 1, characterized in that: In step three, the coating treatment is a transfer coating method: the pretreated fabric is closely attached to the transfer paper containing the waterproofing agent emulsion, the waterproofing agent is transferred to the fabric by hot pressing transfer, and then the transfer paper is peeled off to complete the application of the coating.

8. The production process of a fluorine-free washable waterproof fabric according to claim 1, characterized in that: In step six, the softening finishing uses an environmentally friendly softener, and the antistatic finishing uses a conventional antistatic agent.

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