An anti-pilling agent composition for preventing linting of a sticky roll and a process for preparing an anti-pilling lint

Abstract

The application relates to the technical field of textile processing, and particularly discloses an anti-pilling and anti-sticking roller agent composition and a preparation process of anti-pilling velvet. The anti-pilling and anti-sticking roller agent composition is composed of 0.1-1.2% aromatic polyethylene glycol ether, 2-8% water-soluble dispersion of thermal crosslinking acrylic copolymer, 0.1-1.0% fluorine-free waterproof finishing agent and the rest water. The anti-pilling and anti-sticking roller agent composition has good wetting effect on the velvet, can penetrate into the velvet and form a continuous and firm hydrophobic film layer in the velvet fibers, so that the mutual friction between the fibers in the velvet and the moisture absorption performance of the film layer are reduced, and the anti-pilling performance and the anti-sticking roller performance of the velvet are improved.

Description

Technical Field

[0001] This application relates to the field of textile processing technology, and more specifically, it relates to an anti-pilling agent composition for preventing pilling and sticking to rollers and a process for preparing anti-pilling fleece. Background Technology

[0002] Fleece is a cotton fabric that has been brushed to create a rich, velvety surface. It comes in two types: single-sided and double-sided. Single-sided fleece is primarily twill-weave, while double-sided fleece is primarily plain-weave. Fleece is highly fluffy, soft, thick, and has excellent warmth retention, making it mainly used for making autumn and winter clothing, children's clothing, etc.

[0003] However, traditional fleece fabrics have poor pilling resistance; the surface is prone to pilling and fuzzing at friction points or after repeated washing, affecting its appearance. Although the pilling resistance of fleece fabrics can be improved by impregnating them with anti-pilling agents, the fabric is easily flattened during the impregnation process, thus losing its fluffy feel.

[0004] To improve the fluffiness of fleece fabric, it is generally impregnated with anti-pilling agents before being napped, combed, and sheared. However, because anti-pilling agents are highly water-soluble and have strong hygroscopic properties after forming a film, the friction between the fleece and the napping machine is relatively high during napping. This can easily damage the anti-pilling agent film on the fleece, causing the anti-pilling agent to stick to the rollers on the napping machine. Consequently, the fleece is less likely to form loops, thus negatively impacting its fluffiness. Summary of the Invention

[0005] To improve the anti-pilling roller performance of anti-pilling additives, this application provides an anti-pilling additive composition for anti-pilling rollers and a preparation process for anti-pilling fleece fabric.

[0006] In a first aspect, this application provides an anti-pilling additive composition for preventing pilling and sticking to rollers, employing the following technical solution: An anti-pilling aid composition for preventing pilling and sticking to rollers, comprising the following components by weight percentage: Aromatic polyethylene glycol ethers 0.1–1.2%; Water-soluble dispersions of thermally crosslinked acrylic copolymers: 2–8%; Fluorine-free waterproofing finishing agent 0.1-1.0%; The remainder is water.

[0007] Aromatic polyethylene glycol ethers are nonionic liquid emulsifiers used in pigment printing, exhibiting good stability and excellent printing performance in all-aqueous pastes. Water-soluble dispersions of thermally crosslinked acrylic copolymers are low-formaldehyde acrylic adhesives used in pigment printing, providing good dry cleaning fastness and imparting a soft hand feel and excellent colorfastness to the printed materials.

[0008] By employing the above technical solution, an aromatic polyethylene glycol ether, a water-soluble dispersion of a thermally crosslinked acrylic copolymer, and a fluorine-free waterproofing agent are compounded in water. On one hand, the aromatic polyethylene glycol ether ensures that the water-soluble dispersion of the thermally crosslinked acrylic copolymer maintains a good dispersion state in water, which is beneficial for the uniform adhesion of the thermally crosslinked acrylic copolymer to the fleece to form a film layer, protecting the fibers in the fleece and reducing the mutual friction between fibers, thereby achieving an anti-pilling effect. On the other hand, because the aromatic polyethylene glycol ether can maintain a very fine dispersion state in the anti-pilling auxiliary composition for anti-pilling roller adhesion, it has a good wetting effect. Therefore, aromatic polyethylene glycol ethers not only promote the film formation of the anti-pilling agent composition on the velour fabric, but also regulate the film formation speed of the anti-pilling agent composition on the velour fabric. This facilitates the formation of a continuous film layer on the velour fabric, making the film layer less prone to peeling and falling off, thus effectively improving the anti-pilling performance of the anti-pilling agent composition.

[0009] Meanwhile, the fluorine-free waterproofing finishing agent exhibits good compatibility and stability with the water-soluble dispersions of aromatic polyethylene glycol ethers and thermally crosslinked acrylic copolymers. Therefore, using a small amount of the fluorine-free waterproofing finishing agent combined with the water-soluble dispersions of aromatic polyethylene glycol ethers and thermally crosslinked acrylic copolymers can effectively inhibit the absorption of water molecules from the air by the anti-pilling aid composition for anti-pilling rollers. This reduces the hygroscopicity of the anti-pilling aid composition after film formation, improves the anti-pilling roller performance of the anti-pilling aid composition during napping, and is beneficial for obtaining a fluffy and pill-resistant fleece fabric.

[0010] Preferably, the anti-pilling aid composition of the anti-pilling roller comprises the following components by weight percentage: Aromatic polyethylene glycol ether 0.1–1.0%; Water-soluble dispersions of thermally crosslinked acrylic copolymers: 3–6%; Fluorine-free waterproofing finishing agent: 0.2-0.8%; The remainder is water.

[0011] By adopting the above technical solution and further optimizing the dosage of the water-soluble dispersion of aromatic polyethylene glycol ether, thermally crosslinked acrylic copolymer and fluorine-free waterproof finishing agent, the resulting anti-pilling and anti-sticking roller additive composition can form a continuous and firm hydrophobic film layer on the surface of the fleece, and the resulting fleece has excellent anti-pilling and anti-sticking roller properties.

[0012] Preferably, the aromatic polyethylene glycol ether has a density of 1.1 g / cm³. 3 It has a boiling point of 100℃ and a pH value of 8-9.

[0013] Preferably, the density of the water-soluble dispersion of the thermally crosslinked acrylic copolymer is 1 g / cm³. 3 It has a freezing point of 0℃ and a pH value of 6 to 8.

[0014] By adopting the above technical solution, the aromatic polyethylene glycol ether, aromatic polyethylene glycol ether, and water have similar densities, excellent water solubility, good compatibility, and high dispersibility. Simultaneously, the anti-pilling agent composition for anti-pilling rollers obtained after mixing the above raw materials has a pH within a certain range, exhibits good rheological properties, good wettability of the fleece fabric, and excellent processing performance. Therefore, the anti-pilling agent composition for anti-pilling rollers formed by mixing and compounding the above aromatic polyethylene glycol ether, aromatic polyethylene glycol ether, water, and a fluorine-free waterproof finishing agent can form a continuous and firm hydrophobic film layer on the fleece fabric surface, which is beneficial to improving the anti-pilling and anti-sticking performance of the fleece fabric.

[0015] Preferably, the fluorine-free waterproofing agent is a fluorine-free waterproofing agent. Hydro AM liq.

[0016] By adopting the above technical solution, a fluorine-free waterproof finishing agent... Hydro AM liq is a mixture of a polymer and a paraffin dispersion, exhibiting weak cationic properties, with a density of approximately 0.97 g / cm³. 3 It can be diluted with water in any proportion and has good compatibility with aromatic polyethylene glycol ethers, exhibiting high stability and excellent processing performance. Therefore, it contains a fluorine-free waterproofing finishing agent. Hydro AM liq's anti-pilling roller composition, when added to the fleece fabric, forms a continuous and robust hydrophobic film on the fleece surface. This is achieved with a fluorine-free waterproof finishing agent. Hydro AM liq can be continuously and uniformly dispersed in the anti-pilling agent composition film layer of the anti-pilling roller, which helps to reduce water absorption of the anti-pilling agent composition film layer of the anti-pilling roller and further improves the anti-pilling roller performance of the fleece.

[0017] Secondly, this application provides a process for preparing anti-pilling fleece fabric, which adopts the following technical solution: A process for preparing an anti-pilling fleece fabric includes the following steps: S1: After the dyed fabric is impregnated with a softening agent aqueous solution, it is then napped, shaped, combed and sheared to obtain a semi-finished velvet fabric. S2: After soaking the semi-finished fleece in the anti-pilling agent composition of the above-mentioned anti-pilling roller, the front side is again brushed, combed, sheared and shaped, and rolled up to obtain the fleece.

[0018] By adopting the above technical solution, the semi-finished fleece fabric is immersed in an anti-pilling agent composition for preventing pilling and sticking to rollers. This composition penetrates into the semi-finished fleece fabric and forms a continuous and robust hydrophobic film on its surface, improving its anti-pilling and anti-sticking properties. Then, the semi-finished fleece fabric immersed in the anti-pilling agent composition undergoes front-side napping, front-side combing, and front-side shearing treatments, resulting in a large number of dense loops on the front side of the fabric. After setting, this process contributes to obtaining a fleece fabric with excellent anti-pilling, anti-sticking, and fluffy texture.

[0019] Preferably, in step S2, the weight ratio of the semi-finished fleece fabric and the anti-pilling agent composition of the anti-pilling roller is 1:(0.02-0.08).

[0020] By adopting the above technical solution, the semi-finished fleece fabric is added to the anti-pilling agent composition for anti-pilling and anti-sticking rollers in the above weight ratio for soaking treatment. This facilitates the anti-pilling agent composition for anti-pilling and anti-sticking rollers to wet the semi-finished fleece fabric and then penetrate into the semi-finished fleece fabric, forming a continuous and firm hydrophobic film layer on the fiber surface of the semi-finished fleece fabric. This is beneficial to improving the anti-pilling performance and anti-sticking roller performance of the fleece fabric.

[0021] Preferably, in step S2, the speed of the curved needle for front napping is 160-175 RPM, the speed of the straight needle is 135-150 RPM, and the speed of the main drum is 155 RPM.

[0022] By adopting the above technical solutions and optimizing the parameters of the napping process, it is beneficial to improve the density and coverage of the loops on the surface of the velvet semi-finished product, and further improve the fluffy feel of the velvet.

[0023] In summary, this application has the following beneficial effects: 1. Because the aromatic polyethylene glycol ether, the thermally crosslinked acrylic copolymer water-soluble dispersion, and the fluorine-free waterproofing agent used in this application have good compatibility, dispersibility, and stability in water, they have a good wetting effect on the fleece fabric. They can penetrate into the fleece fabric and form a continuous and firm hydrophobic film layer in the fleece fibers, thus reducing the mutual friction between fibers in the fleece fabric and the moisture absorption performance of the film layer, thereby improving the fleece fabric's anti-pilling and anti-sticking properties; 2. The fluorine-free waterproofing agent preferably used in this application Hydro AM liq has good compatibility with the water-soluble dispersion of aromatic polyethylene glycol ether and thermally crosslinked acrylic copolymer. The resulting anti-pilling agent composition for anti-pilling rollers has high stability and excellent processing performance, which is beneficial to further improve the hydrophobicity of the film layer on the surface of the fleece, thereby improving the anti-pilling roller performance of the fleece. 3. The method of this application involves immersing a semi-finished fleece fabric in an anti-pilling agent composition for an anti-pilling roller. After the anti-pilling agent composition for an anti-pilling roller forms a continuous and firm hydrophobic film layer on the surface of the semi-finished fleece fabric, the resulting semi-finished fleece fabric is not prone to moisture absorption, so it is easy to nap and form a large number of dense loops, thereby obtaining a fleece fabric with anti-pilling properties and fluffiness. Attached Figure Description

[0024] Figure 1 This is a diagram showing the sticking of the velvet semi-finished product to the tip of the napping roller when the napping roller is applied to the front side during the napping process in Embodiment 1 of this application. Figure 2 This is a diagram showing the sticking of the velvet semi-finished product to the tip of the napping roller when it is napped on the front side in Comparative Example 2 of this application. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Unless otherwise specified below, all raw materials and equipment used in the embodiments of this application are commercially available.

[0027] In this embodiment, the napping machine A, napping machine B, and combing machine are all of the brand Mario Crostata and were purchased from Italy. The shearing machine, brand name Lafer, was purchased from Italy; The setting machine is from the brand "Menfushi".

[0028] Preparation Example Preparation Example 1 An anti-pilling additive composition for preventing pilling and sticking to rollers, the components and their weights (kg) are shown in the table below.

[0029] The preparation method of the above-mentioned anti-pilling auxiliary composition for anti-pilling rollers is as follows: add aromatic polyethylene glycol ether, water-soluble dispersion of thermally cross-linked acrylic copolymer, and fluorine-free waterproof finishing agent to water, stir and mix to obtain the anti-pilling auxiliary composition for anti-pilling rollers.

[0030] In the preparation examples of this application, the aromatic polyethylene glycol ether is... The emulsifier is PE new, with a density of 1.1 g / cm³. 3 It has a boiling point of 100℃ and a pH value of 8-9.

[0031] The water-soluble dispersion of thermally crosslinked acrylic copolymers is TOW Plus adhesive, density 1g / cm³ 3 It has a freezing point of 0℃ and a pH value of 6 to 8.

[0032] Fluorine-free waterproofing finishing agent is a fluorine-free waterproofing finishing agent. Hydro AM liq.

[0033] Preparation Examples 2-5 An anti-pilling aid composition for preventing pilling and sticking to rollers, which differs from Preparation Example 1 in that the components and their weights (kg) are shown in the table below.

[0034] Preparation Example 6 A pilling-resistant roller-resistant additive composition differs from Preparation Example 1 in that the fluorine-free waterproofing agent is fluorine-free waterproofing agent WSA-01, which is weakly cationic and has a pH value of 4-6.

[0035] Preparation Example 7 An anti-pilling aid composition for preventing pilling and sticking to rollers, which differs from Preparation Example 1 in that it is composed of 5.2 kg of a water-soluble dispersion of a thermally crosslinked acrylic copolymer, 0.8 kg of a fluorine-free waterproofing finishing agent, and 99.4 g of water.

[0036] Preparation Example 8 An anti-pilling aid composition for preventing pilling and sticking to rollers, which differs from Preparation Example 1 in that it is composed of 0.7 kg of aromatic polyethylene glycol ether, 5.3 kg of a water-soluble dispersion of a thermally crosslinked acrylic copolymer, and 99.4 g of water.

[0037] Preparation Example 9 An anti-pilling aid composition for preventing pilling and sticking to rollers, differing from Preparation Example 1 in that an equal weight of BASF Lutensol FT TO 10 nonionic emulsifier is used instead. Emulsifier PE new.

[0038] Performance testing The anti-pilling fleece fabric prepared in the embodiments of this application and the fleece fabric prepared in the comparative example were tested for anti-pilling performance, roller adhesion performance, and bulkiness. The testing methods are as follows: Anti-pilling performance: tested according to ISO 12945-2 at 7000 rpm in Martin conditions; Adhesion roller performance test: Visually inspect the adhesion of the roller to the needle tip of the brushing roller during front brushing, and calculate the percentage of non-adhesion roller area to the total area of ​​the brushing roller. Loftiness testing: Thickness gauges were used for testing, and the thickness gauges were purchased from ANDREWS EQUIPMENT CO. Example

[0039] Example 1 A process for preparing an anti-pilling fleece fabric includes the following steps: S1: After the dyed fabric is impregnated with a softening agent aqueous solution, the front and back of the fabric are first napped and first intermediate set, then napped and second intermediate set, and then the reverse side is combed, the reverse side is sheared for the first time and the reverse side is sheared for the second time to obtain the velvet semi-finished product. In this embodiment of the application, the dyed greige fabric is a greige fabric prepared by conventional dyeing and finishing processes (specifically, batching, dyeing, dehydration, opening, and drying). The greige fabric is a coarse-knit fabric, 250g, purchased from Shanghai Jialinjie Textile Technology Co., Ltd.

[0040] The softening agent aqueous solution is composed of 0.5% SIHNANO and 99.5% water. The weight ratio of the dyed fabric to the softening agent aqueous solution is 1:0.005. SIHNANO is purchased from Anggao. During the first napping process, the looper speed of napping machine A was 70 RPM, the straight needle speed was 25 RPM, and the main drum speed was 155 RPM; the looper speed of napping machine B was 59 RPM, the straight needle speed was 50 RPM, and the main drum speed was 155 RPM.

[0041] During the first intermediate setting, the front side of the velvet semi-finished product is facing up. The needle plate speed of the setting machine is 30 YPM, the upper overfeed is 25%, the upper overfeed speed is 37.5 YPM, the lower overfeed is 25%, the lower overfeed speed is 37.5 YPM, and the setting temperature is 150℃.

[0042] During the second napping process, the looper speed of napping machine A was 5 RPM, the straight needle speed was 30 RPM, and the main drum speed was 155 RPM; the looper speed of napping machine B was 20 RPM, the straight needle speed was 20 RPM, and the main drum speed was 155 RPM.

[0043] During the second intermediate setting, the front side of the velvet semi-finished product is facing up. The needle plate speed of the setting machine is 30 YPM, the upper overfeed is 25%, the upper overfeed speed is 37.5 YPM, the lower overfeed is 25%, the lower overfeed speed is 37.5 YPM, and the setting temperature is 130℃.

[0044] During reverse combing, the tension of the combing machine is 14.1 YPM, the speed of roller A is 15.2 YPM, the speed of roller B is 15.4 YPM, and the speed of the main drum is 130 RPM.

[0045] During the first reverse shearing, the fabric output speed of the shearing machine was 2.5 YPM, the main speed was 15 YPM, the feed speed 1 was 3 YPM, the feed speed 2 was 17 YPM, the blade distance was 1.3 / 0.2 inch, the blade speed was 1100 RPM, the brush distance was 3 inch, the brush speed was 50 RPM, and the pile height was 3 mm.

[0046] During the second reverse shearing, the fabric output speed of the shearing machine was 2.5 YPM, the main speed was 10 YPM, the feed speed 1 was 3 YPM, the feed speed 2 was 17 YPM, the blade distance was 1.3 / 0.2 inch, the blade speed was 1100 RPM, the brush distance was 3 inch, the brush speed was 50 RPM, and the pile height was 3 mm.

[0047] S2: After soaking the semi-finished fleece in the anti-pilling agent composition of the anti-pilling roller for 24 hours, the fleece is then subjected to front-side napping, front-side combing, front-side shearing, and final shaping, and then rolled up to obtain the fleece.

[0048] In this embodiment, the anti-pilling additive composition for the anti-pilling roller is the anti-pilling additive composition for the anti-pilling roller prepared in Preparation Example 1, and the weight ratio of the velvet semi-finished product and the anti-pilling additive composition for the anti-pilling roller is 1:0.04.

[0049] During the process of immersing the semi-finished fleece in the anti-pilling agent composition of the anti-pilling roller, the semi-finished fleece is facing upwards, the needle plate speed is 12 YPM, the upper overfeed is 20%, the upper overfeed speed is 14.4 YPM, the lower overfeed is 0%, the lower overfeed speed is 14.4 YPM, and the pressure roller speed is 5 YPM.

[0050] During the napping process, the speed of the looper needle of napping machine A is 170 RPM, the speed of the straight needle needle is 140 RPM, and the speed of the main drum is 155 RPM.

[0051] During the front combing process, the tension of the combing machine is 18.5 YPM, the speed of roller A is 19 YPM, the speed of roller B is 19.5 YPM, and the speed of the main drum is 130 RPM.

[0052] During the front shearing process, the feed speed of the shearing machine is 3 YPM, the feed speed of fabric 2 is 10 YPM, the output speed is 2.5 YPM, the blade distance is 2.8 / 0.2 inch, the blade speed is 1100 RPM, the brush distance is 3.5 inch, the brush speed is 50 RPM, and the pile height is 3 mm.

[0053] In the final setting process, the front side of the velvet semi-finished product is facing up. The needle plate speed of the setting machine is 30 YPM, the upper overfeed is 5%, the upper overfeed speed is 31.5 YPM, the lower overfeed is 0%, the lower overfeed speed is 31.5 YPM, and the setting temperature is 150℃.

[0054] Examples 2-6 A process for preparing an anti-pilling fleece fabric differs from that in Example 1 in that, in step S2, The anti-pilling additive composition for anti-pilling rollers is the anti-pilling additive composition for anti-pilling rollers prepared in the examples in the table below. Example 1 Preparation Example 1 Example 2 Preparation Example 2 Example 3 Preparation Example 3 Example 4 Preparation Example 4 Example 5 Preparation Example 5 Example 6 Preparation Example 6 The anti-pilling fleece fabrics prepared in Examples 1 to 6 of this application were tested for anti-pilling performance, waterproof performance, roller adhesion performance, and bulkiness. The test results are shown in the table below.

[0055] Data analysis of the table above shows that the anti-pilling fleece fabrics prepared in Examples 1-6 of this application have anti-pilling performance of 4.5-5, 85-100% non-sticking to rollers, and a bulkiness of 0.27-0.40 inches. This indicates that when the anti-pilling additive composition used in the preparation steps of the anti-pilling fleece fabric of this application is composed of 0.1-1.2% aromatic polyethylene glycol ether, 2-8% water-soluble dispersion of thermally crosslinked acrylic copolymer, 0.1-1.0% fluorine-free waterproof finishing agent, and water, the resulting anti-pilling fleece fabric exhibits good anti-pilling performance, non-sticking to rollers performance, and high bulkiness.

[0056] Further analysis of the table above shows that the anti-pilling fleece fabrics prepared in Examples 1, 2, and 3 have anti-pilling performance of 4.5-5, 95-100% non-sticking to rollers, and a bulkiness of 0.33-0.35 inches. Compared to the anti-pilling fleece fabric prepared in Example 4, the anti-pilling fleece fabrics prepared in Examples 1, 2, and 3 have higher anti-sticking performance; compared to the anti-pilling fleece fabric prepared in Example 5, the anti-pilling fleece fabrics prepared in Examples 1, 2, and 3 have higher bulkiness. This indicates that when the anti-pilling auxiliary agent composition used in the preparation steps of the anti-pilling fleece fabric of this application is composed of 0.1-1.0% aromatic polyethylene glycol ether, 3-6% water-soluble dispersion of thermally crosslinked acrylic copolymer, 0.2-0.8% fluorine-free waterproof finishing agent, and water, the resulting anti-pilling fleece fabric possesses high anti-pilling performance, anti-sticking performance, and bulkiness.

[0057] Compared to Example 6, the anti-pilling fleece fabrics prepared in Examples 1-5 all showed increased non-sticking percentage and increased bulk. In the preparation steps of the anti-pilling fleece fabric of this application, the anti-pilling additive composition used for preventing pilling and sticking to the rollers, and the fluorine-free waterproof finishing agent, are all fluorine-free waterproof finishing agents. Hydro AM liq can improve the anti-pilling roller properties and bulkiness of the resulting anti-pilling fleece. Meanwhile, compared to Example 6, the anti-pilling grades of Examples 1-5 are slightly increased. This may be due to the fluorine-free waterproofing finishing agent. Hydro AM liq and TOW Plus adhesive The emulsifier PE new has better compatibility, and the compounded composition has better processing performance, thereby improving the anti-pilling grade of the anti-pilling fleece.

[0058] Example 7 A process for preparing an anti-pilling fleece fabric differs from that in Example 1 in that, in step S2, the weight ratio of the fleece fabric semi-finished product and the anti-pilling additive composition of the anti-pilling sticking roller is 1:0.03.

[0059] Example 8 A process for preparing an anti-pilling fleece fabric differs from that in Example 1 in that, in step S2, the weight ratio of the fleece fabric semi-finished product and the anti-pilling additive composition of the anti-pilling sticking roller is 1:0.05.

[0060] Example 9 A process for preparing an anti-pilling fleece fabric differs from that in Example 1 in that, in step S2, the weight ratio of the fleece fabric semi-finished product and the anti-pilling additive composition of the anti-pilling sticking roller is 1:0.02.

[0061] Example 10 A process for preparing an anti-pilling fleece fabric differs from that in Example 1 in that, in step S2, the weight ratio of the fleece fabric semi-finished product and the anti-pilling additive composition of the anti-pilling sticking roller is 1:0.08.

[0062] The anti-pilling fleece fabrics prepared in Examples 1, 7 to 10 of this application were tested for anti-pilling performance, roller adhesion performance, and bulkiness. The test results are shown in the table below.

[0063] Data analysis of the table above shows that the anti-pilling fleece fabrics prepared in Examples 1, 7-10 of this application have anti-pilling performance of 4.5-5, 94-100% non-sticking to rollers, and a bulkiness of 0.29-0.42 inches. This indicates that when the weight ratio of the fleece semi-finished product to the anti-pilling agent is 1:(0.02-0.08) in the preparation steps of the anti-pilling fleece fabric of this application, the resulting anti-pilling fleece fabric has good anti-pilling performance, non-sticking to rollers performance, and high bulkiness.

[0064] Further analysis of the table above shows that, compared to the anti-pilling fleece fabrics prepared in Examples 9 and 10, the anti-pilling fleece fabrics prepared in Examples 1, 7, and 8 possess both higher anti-sticking properties and greater bulk. This indicates that, in the preparation steps of the anti-pilling fleece fabric of this application, when the weight ratio of the fleece fabric semi-finished product to the anti-pilling agent is 1:(0.03~0.05), the resulting anti-pilling fleece fabric possesses both high anti-sticking performance and high bulk.

[0065] Example 11 A process for preparing an anti-pilling fleece fabric differs from that in Example 1 in that, in step S2, the bending needle speed for the front napping is 160 RPM, the straight needle speed is 135 RPM, and the main drum speed is 155 RPM.

[0066] Example 12 The preparation process of an anti-pilling fleece fabric differs from that of Example 1 in that, in step S2, the bending needle speed for the front napping is 175 RPM, the straight needle speed is 150 RPM, and the main drum speed is 155 RPM.

[0067] The bulkiness of the anti-pilling fleece fabrics prepared in Examples 1, 11-12 of this application was tested, and the test results are shown in the table below.

[0068] Comparative Example Comparative Example 1 A process for preparing fleece fabric differs from Example 1 in that, in step S2, the anti-pilling agent composition for the anti-pilling roller is the anti-pilling agent composition for the anti-pilling roller prepared in the preparation examples in the table below. The anti-pilling fleece fabric prepared in Example 1 of this application and the fleece fabrics prepared in Comparative Examples 1 to 3 were tested for anti-pilling performance, roller sticking performance and bulkiness. The test results are shown in the table below.

[0069] Data analysis of the table above shows that, compared with the anti-pilling fleece prepared in Example 1, the fleece prepared in Comparative Examples 1 and 3 has significantly reduced anti-pilling performance and anti-sticking performance.

[0070] Reference Figure 1 It can be seen that in Example 1, during the front-side napping process, the tip of the napping roller needle is sharp, and the anti-pilling additive composition of the anti-pilling roller does not adhere; (Refer to...) Figure 2 It can be seen that in Comparative Example 2, when the napping roller needle tip is rounded during the napping process, a large amount of anti-pilling agent composition adhering to the anti-pilling roller adheres to it. This indicates that the anti-pilling agent composition used in the preparation step of the anti-pilling fleece fabric of this application is composed of an aromatic polyethylene glycol ether, a water-soluble dispersion of a thermally crosslinked acrylic copolymer, a fluorine-free waterproof finishing agent, and water, wherein the aromatic polyethylene glycol ether is... When PE new emulsifier is used, it can improve the anti-pilling properties and anti-sticking properties of the final anti-pilling fleece.

[0071] The reasons for the above findings may be that, in Comparative Examples 1 and 3, the absence of aromatic polyethylene glycol ethers or the use of the nonionic emulsifier BASF Lutensol FT TO 10 to replace the aromatic polyethylene glycol ethers affected the film-forming properties of the anti-pilling agent composition for the anti-pilling roller. This made the film layer of the anti-pilling agent composition prone to peeling, thus weakening the protective effect on the fibers in the fleece and reducing the anti-pilling effect of the fleece. Simultaneously, it also affected the compatibility and stability of the water-soluble dispersion of the fluorine-free waterproofing agent and the thermally crosslinked acrylic copolymer, resulting in a decrease in the moisture-wicking resistance of the film layer formed by the anti-pilling agent composition for the anti-pilling roller.

[0072] In Comparative Example 2, since no fluorine-free waterproofing agent was added, the anti-pilling aid composition for anti-pilling rollers easily absorbed water molecules from the air, increasing the hygroscopicity of the anti-pilling aid composition after film formation, which in turn caused the anti-pilling aid composition for anti-pilling rollers to easily stick to the rollers during napping.

[0073] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A pilling-resistant additive composition for preventing pilling and sticking to rollers, characterized in that, It consists of the following components by weight percentage: Aromatic polyethylene glycol ethers: 0.1–1.2%; Water-soluble dispersions of thermally crosslinked acrylic copolymers: 2-8%; Fluorine-free waterproofing finishing agent: 0.1-1.0%; The remainder is water; Aromatic polyethylene glycol ether is the emulsifier for Lupin® (PE new); The water-soluble dispersion of the thermally crosslinked acrylic copolymer is Hailichailin® adhesive TOW Plus; The fluorine-free waterproofing finishing agent is either Smartrepel® Hydro AM liq or WSA-01.

2. The anti-pilling aid composition for anti-pilling rollers according to claim 1, characterized in that, It consists of the following components by weight percentage: Aromatic polyethylene glycol ethers: 0.1–1.0%; Water-soluble dispersions of thermally crosslinked acrylic copolymers: 3-6%; Fluorine-free waterproofing finishing agent: 0.2-0.8%; The remainder is water.

3. A process for preparing an anti-pilling fleece fabric, characterized in that, Includes the following steps: S1: After the dyed fabric is impregnated with a softening agent aqueous solution, it is then napped, shaped, combed and sheared to obtain a semi-finished velvet fabric. S2: After soaking the semi-finished fleece in the anti-pilling agent composition of the anti-pilling roller as described in any one of claims 1 to 2, the fleece is then subjected to front-side napping, front-side combing, front-side shearing and shaping, and then rolled up to obtain the fleece.

4. The preparation process of the anti-pilling fleece fabric according to claim 3, characterized in that, In step S2, the weight ratio of the semi-finished fleece fabric and the anti-pilling agent composition of the anti-pilling roller is 1:(0.02-0.08).

5. The preparation process of the anti-pilling fleece fabric according to claim 3, characterized in that, In step S2, the speed of the curved needle for front napping is 160-175 RPM, the speed of the straight needle is 135-150 RPM, and the speed of the main drum is 155 RPM.

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