An antibacterial, antistatic, and anti-shedding rabbit fur-like fabric, its preparation method and application

Abstract

This invention relates to an antibacterial, antistatic, and anti-shedding rabbit fur-like fabric, its preparation method, and its application. Using in-situ polymerized multifunctional polyester chips as the main sheath material and conventional PET polyester chips as the core material, a composite melt spinning process with a shaped spinneret is employed to obtain a sheath-core structure fiber. This fiber is used as the face yarn, and low-elastic polyester fiber is used as the middle and bottom yarns, knitted into a fabric blank using a double-needle bed warp knitting machine. The fabric is then dyed, followed by napping, setting, blow-drying, combing, ironing, and shearing treatments to obtain an antibacterial, antistatic, and anti-shedding rabbit fur-like fabric. It exhibits no chemical component leaching, an antibacterial rate exceeding 99%, antistatic grade A, and excellent anti-shedding and washability properties, making it suitable for children's plush toys. The preparation method is simple, quick, and requires minimal equipment, facilitating industrial production and application.

Description

Technical Field

[0001] This invention relates to the development of a rabbit fur-like fabric and its application in plush toys, belonging to the field of functional textile technology. Background Technology

[0002] Rabbit hair fibers are long and fine, white in color, with a good luster, soft and fluffy, and have strong warmth retention. However, the fibers have little crimp, a smooth surface, poor cohesion between fibers, and relatively low strength. Fine rabbit hair has a strength of 15.9–27.4 cN / tex, while coarse rabbit hair has a strength of 62.7–122.4 cN / tex, with an average breaking elongation of 31%–48%. Its reaction to acids and alkalis is roughly the same as wool. Rabbit hair contains various amino acids, has low density and light weight, good warmth retention, strong moisture absorption, a smooth texture, and a good luster. Its composition is similar to human skin, providing a comfortable feel against the skin, making it widely used in the clothing industry. However, due to the high cost of rabbit hair harvesting and raw material costs, and the fact that rabbit hair contains protein and oil, making it prone to bacterial growth, especially considering animal protection measures that prohibit the killing of animals and the use of animal fur in clothing, accessories, and shoes, it is essential to find a lower-cost, higher-performance alternative to rabbit hair. Imitation rabbit fur fabric has emerged as a result, but it still needs further improvement in terms of physical properties such as wearing comfort, pilling resistance, softness, and elongation at break. Furthermore, it is prone to shedding when washed, and synthetic fibers easily generate static electricity, leading to the adsorption of dust and bacteria from the environment, thus failing to meet consumer demands. This is especially true in the plush toy industry, where the requirements for dust and bacteria control are even more stringent.

[0003] Chinese invention patent CN 111088593 A discloses a preparation process for imitation rabbit fur fabric and the adhesive used therein. Through reasonable selection of raw fiber materials and the design of the stitching process for the middle and bottom yarns, the fabric is less prone to shedding and possesses excellent stiffness and fluffiness in the pile layer, thus improving the quality of the imitation animal fur fabric. However, the fineness of the pile surface, the smoothness of the hand feel, the high simulation effect, and the antibacterial properties of this imitation rabbit fur fiber fabric need further improvement.

[0004] Chinese utility model patent CN 208104657 U discloses an antibacterial and antistatic imitation rabbit fur fabric. The antibacterial layer is a bamboo fiber and honeycomb polyester woven layer, and the antistatic layer is a silver-plated filament and nylon filament woven layer. The fiber composition is complex, making dyeing difficult and prone to uneven dyeing.

[0005] Chinese invention patent CN 106592085 A discloses a method for preparing imitation rabbit fur fiber fabric. Through reasonable selection of raw materials and design of the middle yarn and bottom yarn stitching process, the prepared fabric is not easy to shed, and the fabric's pile layer is given excellent stiffness and fluffiness, thus improving the quality of the imitation animal fur fabric.

[0006] The above-mentioned technical solutions have solved the problems of shedding, antibacterial properties, and antistatic properties to a certain extent. However, the process is complex and it is difficult to solve all three problems at the same time. Moreover, while solving the problems, it has an adverse effect on the feel and dyeability. At present, the main methods to produce antibacterial and antistatic properties in imitation rabbit fur fabric are finishing and masterbatch addition. Since the subsequent processes of imitation rabbit fur fabric are relatively complex, in order to ensure that the feel of rabbit fur is achieved, processes such as napping, shaping, blow-drying, combing, and ironing are required. The general masterbatch addition method often fails to achieve a good feel. Furthermore, the finishing process may result in chemical precipitation, which poses a safety hazard to the human body, especially children, and is not washable. Therefore, to obtain imitation rabbit fur fabric that combines a good feel and safety, the intrinsic functional fiber raw materials and all subsequent processing processes need to be perfectly coordinated. Summary of the Invention

[0007] This invention addresses the shortcomings of existing technologies by providing a rabbit fur-like fabric that is resistant to shedding, has antibacterial and antistatic properties, and exhibits excellent stiffness, fluffiness, and anti-collapse properties in its pile layer, effectively improving the quality of animal fur-like fabrics. The invention also includes its preparation method and its application in plush toys.

[0008] The technical solution to achieve the objective of this invention is to provide a method for preparing an antibacterial, antistatic, and anti-shedding rabbit fur-like fabric, comprising the following steps:

[0009] 1. Add 3-4% by weight of matting masterbatch titanium dioxide to in-situ polymerized multifunctional polyester chips to obtain the sheath material. Use conventional PET polyester chips as the core material. With the mass ratio of sheath to core layer being 40-60:60-40, adopt a shaped spinneret sheath-core composite melt spinning process to control the sheath viscosity to be 0.70-0.72 dL / g and the crystallinity to be 63-65% to obtain sheath-core structured fibers.

[0010] 2. Using the core-sheath structure fiber prepared in step 1 as the face yarn and polyester low-elastic fiber as the middle and bottom yarns, the fabric blank is woven into a double needle bed warp knitting machine according to the preset needle-feeding process.

[0011] 3. The fabric is dyed at a temperature of 120-125℃, and then subjected to napping, shaping, blow-drying, combing, ironing, and shearing to obtain a rabbit fur-like fabric with antibacterial, antistatic, and anti-shedding functions.

[0012] The present invention discloses a method for preparing an antibacterial, antistatic, and anti-shedding imitation rabbit fur fabric, wherein the spinneret has a core layer spinneret hole with a serrated shape, a skin layer spinneret hole with a symmetrical flat shape, two ends in the length direction being arc-shaped, and the other two sides being wavy.

[0013] After dyeing, the product is treated with a hydrophilic polyether swelling softener at a concentration of 20-30 g / L.

[0014] The aforementioned blow-drying process employs a hot air blow-drying technique, where the surface temperature within the hot air zone is controlled at 155–165°C, and the passing speed is controlled at 40–60 meters per minute.

[0015] The hydrophilic polyether bulking softener includes polyether-modified multi-component copolymer block silicone oil 8828B and organosilicon linear block copolymer 8157.

[0016] The technical solution of the present invention also includes an antibacterial, antistatic, and anti-shedding rabbit fur fabric obtained by the above preparation method.

[0017] The present invention relates to an antibacterial, antistatic, and anti-shedding rabbit fur-like fabric, which is used in the manufacture of plush toys.

[0018] This invention uses in-situ polymerized multifunctional polyester chips as the main raw material. Through a combination of various processes including chip selection, spinning design and process adjustment, weaving, dyeing and finishing, napping, setting, blow-drying, combing, and calendering, it provides a non-shedding rabbit fur-like fabric with antibacterial and antistatic properties. Furthermore, it has no chemical leaching, long-lasting functionality, and is particularly suitable for children's plush toys. The principle and beneficial effects of this invention are as follows:

[0019] 1. Selection of raw materials

[0020] Functionally, antibacterial and antistatic properties are emphasized, while also meeting the requirements of subsequent processes. Therefore, the polyester chips selected are GENOMEX in-situ polymerized multifunctional polyester chips (produced by Jiangsu Nadun Technology Co., Ltd.), which have good antistatic properties and excellent antibacterial effects. Their intrinsic viscosity is controlled between 0.70 and 0.72 dL / g. Too low a viscosity will lead to glassization in the subsequent setting process, while too high a viscosity will affect the feel and make it difficult to blow patterns later.

[0021] 2. Selection of spinning process conditions

[0022] Traditional spinning processes can cause vitrification and collapse, resulting in a lack of the fluffiness and luster of rabbit fur. Therefore, the crystallinity of the yarn must be controlled at 63-65% during spinning. If the crystallinity is too low, vitrification and collapse will occur during setting, making it impossible to achieve the rabbit fur style. Therefore, a core-sheath structure is used for control. The sheath layer uses GENOMEX polyester chips, and the core layer uses conventional PET polyester chips, with a mass ratio of 40-60:60-40. To achieve a super-simulated rabbit fur effect, titanium dioxide matting masterbatch is added to the sheath layer to eliminate the shine of the polyester. The amount of matting masterbatch added must be strictly controlled to achieve an ultra-dull effect without affecting the spinning quality; the optimal range is 3-4%.

[0023] This invention employs a composite melt spinning process using a shaped spinneret core and sheath. The cross-sectional shape of the core and sheath layers of the shaped spinneret holes gives the resulting fibers excellent anti-shedding and wash-resistant properties when used to prepare imitation rabbit fur fabric.

[0024] 3. Selection of dyeing, finishing and post-treatment process conditions

[0025] Since the melting point of GENOMEX polyester chips is about 5°C lower than that of ordinary polyester fibers, the dyeing temperature should be 5-10°C lower than the conventional dyeing temperature. Too high a dyeing temperature will affect the feel of the fabric.

[0026] To ensure the antistatic properties of GENOMEX polyester fiber while achieving the feel of rabbit fur, strict control must be exercised over the type and amount of softener used. Hydrophilic polyether bulking softener should be selected, while hydrophobic silicone oil smoothing softener should be avoided. The amount used should be strictly controlled at 20-30g / l, as too high a amount will make it too soft and cause shedding.

[0027] The post-processing processes, such as napping, shaping, blow-drying, combing, and heat pressing, are basically similar to ordinary imitation rabbit fur processes, except for blow-drying. When blow-drying with hot air, it is important to control the actual temperature of the fur surface. Generally, the temperature set by the equipment is 20-30°C higher than the actual temperature of the fur surface. Therefore, an infrared thermometer is used to test the actual temperature of the fur surface and control it at 155-165°C, with the speed controlled at 40-60 meters per minute.

[0028] Due to the adoption of the above technical solution, compared with the prior art, the antibacterial, antistatic, and anti-shedding rabbit fur fabric provided by the present invention has an antibacterial rate of over 99%, antistatic grade A, and excellent anti-shedding and washability. The preparation method of the rabbit fur fabric provided by the present invention has the advantages of being simple and quick, with low equipment requirements, which is conducive to industrial production. Attached Figure Description

[0029] Figure 1 A schematic diagram of the cross-section of the spinneret hole in a spinneret for preparing imitation rabbit fur fabric fibers provided in this embodiment of the invention;

[0030] In the diagram, 1. Core layer spinneret orifice; 2. Skin layer spinneret orifice.

[0031] Figure 2 A cross-sectional electron microscope image of the fibers of the rabbit fur-like fabric prepared in an embodiment of the present invention;

[0032] Figure 3 The image shows the antibacterial effect of the rabbit fur-like fabric prepared according to an embodiment of the present invention.

[0033] Figure 4 The image shows the antistatic properties of the rabbit fur-like fabric prepared according to an embodiment of the present invention. Implementation

[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0035] Preparation of core-sheath structure imitation rabbit fur fabric fiber: The sheath layer is made of in-situ polymerized multifunctional polyester chips (GENOMEX polyester chips, produced by Jiangsu Nadun Technology Co., Ltd., preparation method see reference CN110387598A) with good antistatic and antibacterial properties, and an intrinsic viscosity of 0.71 dL / g. 3.2% titanium dioxide matting masterbatch is added to the sheath layer. The core layer uses conventional PET polyester chips with an intrinsic viscosity of 0.74 dL / g, and the core-sheath mass ratio is 40:60. The crystallinity of the yarn is controlled at 64% during spinning. A shaped spinneret is selected for core-sheath composite melt spinning, and a suitable spinning process is used to obtain 75D36F fully matte FDY flat profiled yarn with a core-sheath structure.

[0036] See appendix Figure 1 This is a schematic diagram of the cross-section of the spinneret holes for fiber preparation in this embodiment; the core layer spinneret hole 1 is serrated, and this embodiment adopts a symmetrical double serrated shape; the cortex spinneret hole 2 is symmetrically flat, similar to a peanut shell, with arc-shaped ends and wavy sides in the length direction, and this embodiment adopts a double wavy shape.

[0037] See appendix Figure 2 The image shows a cross-sectional electron microscope image of the fiber prepared in this embodiment. As can be seen from the cross-sectional image, the cortex and core layers have obvious boundaries. The fiber consists of a serrated core layer and a peanut-shell-shaped cortex, which are flat and irregularly shaped filaments that match the shape of the spinneret used in spinning. This gives the prepared imitation rabbit fur fabric excellent shedding resistance and washability.

[0038] The fiber prepared in this embodiment is used as the face yarn (70% by mass), and 100D36F FDY yarn is used as the base yarn (30% by mass). The fabric is woven on a 288 type double needle bed warp knitting machine to form a grey fabric. The fabric is then split on a splitting machine. The split fabric is then subjected to white combing, calendering and pre-setting processes.

[0039] The fabric is dyed in an overflow dyeing machine at a temperature of 125℃. After dyeing, it is treated with a 20g / l hydrophilic polyether bulking softener (such as polyether modified multi-component copolymer block silicone oil 8828B). Finally, it is processed through conventional finishing processes such as fabric smoothing, napping, shaping, blow-drying, combing, ironing, and shearing to obtain the imitation rabbit fur fabric.

[0040] The hot air blowing process is used for the fabric. In the hot air area, an infrared thermometer is used to test the actual temperature of the fabric surface and control it at 155-165℃. The speed of the hot air passing through the hot air area is controlled at 40-60 meters per minute.

[0041] See appendix Figure 3Figures 1 and 2 show the antibacterial effect of the fabric prepared in this embodiment. Figures a1 and b1 show the antibacterial effect of the fabric against *Escherichia coli*, with a1 being a blank sample and b1 being the fabric sample; figures a2 and b2 show the antibacterial effect of the fabric against *Staphylococcus aureus*, with a2 being a blank sample and b2 being the fabric sample. Figure 3 The results show that the fabric has excellent antibacterial properties.

[0042] See appendix Figure 4 The image shows the antistatic properties of the fabric prepared in this embodiment; its electrostatic half-life is 1.98 s, and its highest surface static voltage is 510 V, indicating that the fabric has excellent antistatic effects.

[0043] The fabric provided in this embodiment adopts a core-sheath structure, with the core layer providing effective support and the sheath layer remaining soft, resulting in soft yet firm fibers that achieve a realistic rabbit fur effect. The use of irregularly shaped spinneret holes gives the prepared imitation rabbit fur fabric excellent shedding resistance and washability. The fabric has an antibacterial rate of over 99% and is antistatic grade A, making it suitable for manufacturing plush toys. Example 2

[0044] In this embodiment, the outer layer is made of GENOMEX polyester chips (produced by Jiangsu Nadun Technology Co., Ltd.), which have good antistatic and antibacterial properties and an intrinsic viscosity of 0.70 dL / g. The core layer uses conventional PET polyester chips with an intrinsic viscosity of 0.74 dL / g, and the outer layer to core weight ratio is 35:65. The method described in Example 1 is as follows. Figure 1 The spinning plate with the spinneret-shaped structure shown controls the crystallinity of the sheath to 64% during the spinning process, and adds 3.3% titanium dioxide matting masterbatch to the sheath. After a suitable core-sheath composite melt spinning process, 75D36F fully matte FDY flat profiled yarn is obtained. Using the prepared yarn as the face yarn (70% by mass) and polyester low-elasticity yarn as the middle and bottom yarns (30% by mass), it is woven on a 288-type double-needle bed warp knitting machine according to the set needle-running process to form a fabric blank. The fabric blank is then split on a splitting machine. After splitting, the fabric blank undergoes white brushing, calendering, and pre-setting processes. It is then dyed in an overflow dyeing machine at 125℃, followed by washing and reduction. It is then treated with a 25g / l hydrophilic polyether bulking softener (such as silicone linear block copolymer 8157). Finally, through finishing processes such as fabric preparation, hot air treatment, napping, brushing, calendering, and shearing, a rabbit fur-like fabric is obtained. It has an antibacterial rate of over 99%, is antistatic (Grade A), and has excellent lint-proof and washability. Example 3

[0045] The outer layer is made of GENOMEX polyester chips (produced by Jiangsu Nadun Technology Co., Ltd.) with good antistatic and antibacterial properties, and its intrinsic viscosity is 0.72 dL / g. The core layer uses conventional PET polyester chips with an intrinsic viscosity of 0.74 dL / g. The outer layer to core weight ratio is 50-50. During the spinning process, the crystallinity of the yarn is controlled at 65%. 3.0% titanium dioxide, a matting masterbatch, is added to the sheath layer. Using the core-sheath composite melt spinning process with the irregularly shaped spinneret structure provided in Example 1, a 75D36F fully matte FDY flat irregularly shaped yarn is obtained through a suitable spinning process. This yarn is used as the face yarn (65% by mass), and polyester low-elasticity yarn is used as the middle and bottom yarns (35% by mass). The yarn is woven on a 288-type double-needle bed warp knitting machine according to the set needlework process to form a fabric blank. The fabric blank is then split on a splitting machine. After splitting, the fabric blank undergoes white brushing, calendering, and pre-setting processes. It is then dyed in an overflow dyeing machine at 125℃, followed by washing and reduction. Finally, it is treated with 20g / l hydrophilic polyether bulking softener. After finishing processes such as fabric smoothing, hot air treatment, napping, brushing, calendering, and shearing, a rabbit fur-like fabric is obtained. It has an antibacterial rate of over 99%, is antistatic (Grade A), and has excellent lint-proof and washability.

Claims

1. A method for preparing an antibacterial, antistatic, and anti-shedding rabbit fur-like fabric, characterized in that... Includes the following steps: (1) Add 3-4% by weight of matting masterbatch titanium dioxide to in-situ polymerized multifunctional polyester chips to obtain the skin layer raw material. Use conventional PET polyester chips as the core layer raw material. With the mass ratio of skin layer to core layer being 40-60:60-40, adopt the shaped spinneret skin-core composite melt spinning process to control the skin layer viscosity to be 0.70-0.72dL / g and the crystallinity to be 63-65% to obtain skin-core structure fiber. (2) Using the core-sheath structure fiber prepared in step (1) as the face yarn and the polyester low elastic fiber as the middle yarn and bottom yarn, the fabric blank is woven into a double needle bed warp knitting machine according to the preset needle-running process. (3) The fabric is dyed at a temperature of 120-125℃, and then subjected to napping, shaping, blow-drying, combing, ironing and shearing to obtain a rabbit fur-like fabric with antibacterial, antistatic and anti-shedding functions. The irregular spinneret has a core layer spinneret hole with a serrated shape, a skin layer spinneret hole with a symmetrical flat shape, two arc-shaped ends along the length direction, and a wavy shape on the other two sides.

2. The method for preparing an antibacterial, antistatic, and anti-shedding imitation rabbit fur fabric according to claim 1, characterized in that: After dyeing, the product is treated with a hydrophilic polyether swelling softener at a concentration of 20–30 g / L.

3. The method for preparing an antibacterial, antistatic, and anti-shedding imitation rabbit fur fabric according to claim 1, characterized in that: The aforementioned blow-drying process employs a hot air blow-drying technique, where the surface temperature within the hot air zone is controlled at 155–165°C, and the passing speed is controlled at 40–60 meters per minute.

4. The method for preparing an antibacterial, antistatic, and anti-shedding imitation rabbit fur fabric according to claim 2, characterized in that: The hydrophilic polyether bulking softener includes polyether-modified multi-component copolymer block silicone oil 8828B and organosilicon linear block copolymer 8157.

5. An antibacterial, antistatic, and anti-shedding rabbit fur fabric obtained by the preparation method according to claim 1.

6. The antibacterial, antistatic, and anti-shedding rabbit fur fabric according to claim 5 is used in the manufacture of plush toys.

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