A kind of degradable lambskin fabric and preparation method thereof

Abstract

The present application relates to the field of textile technology, and more specifically, it relates to a degradable lambskin fabric and a preparation method thereof. A degradable lambskin fabric is woven from a connecting yarn and a blended yarn; the connecting yarn is a tencel filament; the blended yarn is blended by 70-90% shrink-proof wool and 10-30% tencel fiber by weight percentage; the fineness of the blended yarn is (12-18) N / 2; the fineness of each single fiber in the tencel filament is 1.2 or 3 dpf; its preparation method is: weaving the blended yarn and the connecting yarn into a grey cloth; after the grey cloth is subjected to a dyeing process, the grey cloth after the dyeing process is obtained; after the grey cloth after the dyeing process is subjected to auxiliary setting, napping, intermediate setting, combing, shaking, front shearing, back shearing and final setting, rolling to obtain a degradable lambskin fabric. The degradable lambskin fabric of the present application has good warmth retention, high degradation rate, is not easy to shed, and has a good cloth style.

Description

Technical Field

[0001] The present application relates to the field of textile technology, and more specifically, to a degradable lambskin fabric and a preparation method thereof. Background Art

[0002] Lambskin is a functional fabric made by blending polyester fiber and acrylic fiber. It has the advantages of being soft to the touch, easy to wash, not easy to deform, and not shedding or wrinkling. Therefore, it is widely used in products such as clothing, home textiles, and plush toys.

[0003] Nowadays, with the development of the times, the iteration of cashmere products such as clothing, home textiles and plush toys is relatively fast, and a large number of iterated cashmere products will be discarded. However, since the polyester fiber and acrylic fiber in cashmere are synthetic fibers synthesized from high molecular compounds, compared with natural fibers, synthetic fibers are not biodegradable. Therefore, if a large number of cashmere products are directly discarded in the natural environment, it will cause environmental pollution. Summary of the invention

[0004] In order to protect the environment and improve the environmental pollution problem caused by discarded lambskin products, the present application provides a degradable lambskin fabric and a preparation method thereof.

[0005] In the first aspect, the present application provides a degradable lambskin fabric, which adopts the following technical solution:

[0006] A biodegradable lambskin fabric woven from connecting yarn and blended yarn;

[0007] The connecting yarn is Tencel filament;

[0008] The blended yarn is formed by blending 70-90% of shrink-proof wool and 10-30% of Tencel fiber by weight percentage;

[0009] The fineness of the blended yarn is (12-18) N / 2;

[0010] The fineness of each single fiber in the Tencel filament is 1.2-3 dpf;

[0011] Here, dpf = D / F, D is denier, and F is the number of single fibers.

[0012] Wool is a natural protein, and Tencel is a fiber made from wood pulp. Since materials from animal and plant sources have a certain degree of biodegradability, both wool and Tencel can be decomposed by fungi, bacteria and other organisms, and have the advantages of being environmentally friendly and harmless to the ecology.

[0013] By adopting the above technical scheme, in the total raw materials for preparing lambskin, Tencel and shrink-resistant wool that can be completely decomposed in the soil are used to replace the synthetic fibers synthesized by high molecular compounds in the prior art. Therefore, the degradation efficiency of the obtained lambskin in the soil is improved, and the pollution problem of discarded lambskin products to the environment is improved.

[0014] At the same time, the present application adopts Tencel filament of moderate thickness as connecting yarn, which has certain strength and support. It is used to weave thicker blended yarn with higher shrinkage-resistant wool content, which can not only produce high-wool lambskin with high wool content, but also realize the production of high-wool lambskin. The obtained lambskin also has the advantages of large surface particles, round and full surface particles, high surface particle firmness, high surface particle uniformity, soft and delicate surface feel and no hair shedding.

[0015] Preferably, the connecting yarn is 144D / 120F Tencel filament; the fineness of the blended yarn is 16N / 2, and the blended yarn, calculated by weight percentage, is blended with 80% shrink-proof wool and 20% Tencel fiber.

[0016] By adopting the above technical solution, 144D / 120F Tencel filament has better support. The blended yarn obtained by blending it with fibers of specific fineness and weight percentage is used for weaving, which is beneficial to further improve the fabric style of the obtained lambskin and improve the hair loss situation.

[0017] In a second aspect, the present application provides a method for preparing a degradable lambskin fabric, using the following technical solution:

[0018] A method for preparing a degradable lambskin fabric comprises the following steps:

[0019] S1 weaving process: weaving blended yarn and connecting yarn into grey fabric;

[0020] S2 dyeing process: the grey cloth obtained in S1 is subjected to a dyeing process to obtain a grey cloth after the dyeing process;

[0021] S3 post-finishing process: the grey fabric after the dyeing process obtained in S2 is subjected to auxiliary setting, napping, intermediate setting, combing, shaking, front shearing, back shearing and final setting, and then rolled to obtain a biodegradable lambskin fabric;

[0022] The napping includes a first napping and a second napping. After the grey cloth is shaped by the auxiliary agent, the first napping is firstly performed, and then the second napping is performed.

[0023] Among them, the bending speed of the needle for the first roughening treatment is 128.8-148.8RPM; the bending speed of the needle for the second roughening treatment is 132.9-152.9RPM;

[0024] In the combing process, the speed of the curved needle is 90-100RPM; the speed of the straight needle is 90-100RPM; the speed of the roller is 120-130RPM;

[0025] In the pelletizing, the S34 combed grey cloth is first treated with steam at 90-100°C for 60-65min, and then dried at 95-105°C for 110-125min, and the cloth surface is cooled to below 30°C to obtain the pelletized grey cloth.

[0026] By adopting the above technical scheme, after the blended yarn and the connecting yarn are spun and dyed, the obtained grey cloth is post-treated under the above-mentioned napping, combing and shaking process conditions, which is beneficial to increasing the size of the particles of the obtained lambskin cloth surface, as well as improving the roundness and fullness of the particles, the firmness of the particles and the uniformity of the distribution of the particles. At the same time, the obtained cloth surface feels soft and silky and is not easy to shed.

[0027] Preferably, in the S1 weaving process, the yarn tension of the blended yarn is 12-18g; the yarn tension of the connecting yarn is 32-38g.

[0028] By adopting the above technical scheme, the yarn tension of the blended yarn and the connecting yarn can be optimized, the tightness between the blended yarn and the connecting yarn can be adjusted, and the problems of yarn breakage and yarn relaxation during the textile process can be effectively improved. Not only can lambskin with a high wool content be obtained, the environmental protection performance of lambskin can be improved, but it is also beneficial to improve the yield of finished products.

[0029] Preferably, in the S1 weaving process, the coil length of the blended yarn is 12-18 inches / r; the coil length of the connecting yarn is 218-228 inches / r.

[0030] By adopting the above technical solution, the coil length of the blended yarn and the connecting yarn is optimized, which is beneficial to improving the fabric style of the lambskin and improving the occurrence of lambskin hair loss.

[0031] Preferably, in the S2 dyeing process, the grey cloth obtained in S1 is degreased, dyed, soaped, dehydrated and opened to obtain the grey cloth after the dyeing process.

[0032] By adopting the above technical solution, the grey cloth is subjected to dyeing process, the oil stains in the yarn can be removed, and the lambskin finally obtained has a soft feel and is free of oil stains and color spots.

[0033] Preferably, in the auxiliary agent setting of the post-finishing process S3, the grey cloth after the dyeing process obtained in S2 is immersed in a softener aqueous solution to obtain an auxiliary agent-set grey cloth with a liquid content of 75-90%.

[0034] By adopting the above technical solution and impregnating the grey cloth with a softener, the softness and hydrophilicity of the lambskin fabric finally obtained can be further improved.

[0035] Preferably, in the front shearing of the S3 post-finishing process, the distance between the round knife and the bottom knife is 4.2-5.0 inches; and the distance between the bottom knife and the bottom knife is 0.4-0.6 inches.

[0036] By adopting the above technical solution and optimizing the circular knife tool and the bottom knife tool, the cloth surface particles can be modified and the loss of particles can be reduced. The final lambskin cloth surface particles are large, full and round, and the cloth surface style is good.

[0037] In summary, this application has the following beneficial effects:

[0038] 1. The lambskin fleece prepared by the use of connecting yarn and blended yarn in the present application has a high wool content and good warmth retention effect; at the same time, since the blended yarn is composed of a mixture of Tencel fiber and shrink-proof wool, the connecting yarn is Tencel filament, and both Tencel fiber and shrink-proof wool are environmentally friendly and degradable fibers, therefore, compared with the lambskin fleece prepared by synthetic fibers synthesized from polymer compounds, the lambskin fleece in the present application has a higher degradation efficiency in the soil, which can effectively improve the environmental pollution problem of discarded lambskin fleece products;

[0039] 2. In the preparation method of the lambskin of the present application, the grey cloth obtained by the weaving process is subjected to a dyeing process and then subjected to post-processing under specific napping, combing and shaking process conditions. The obtained lambskin cloth has a good style and the obtained lambskin cloth with a high wool content is not easy to shed. DETAILED DESCRIPTION

[0040] The present application is further described in detail below with reference to the embodiments.

[0041] In the examples of the present application, the blended yarns were all purchased from Zhejiang Zhongding Textile Co., Ltd.

[0042] Performance testing:

[0043] The degradable lambskin fabric obtained in the embodiment of the present application and the lambskin fabric obtained in the comparative example were subjected to fabric style detection and hair loss detection, and the detection method was as follows:

[0044] Fabric style testing: Five volunteers who have worked in the field of textile technology for more than five years were selected to observe the size, shape and firmness of the fabric particles, the uniformity of the distribution of the fabric particles, the feel of the fabric, the flatness and thickness of the flat side of the fabric (the side without particles), and then score the fabric style. The scoring criteria are as follows, and the final score is the average.

[0045] Size of fabric particles: Fabric particles are scored from small to large on a scale of 1-5, with large particles being 5 points and small particles being 1 point.

[0046] The shape of the cloth surface particles: The cloth surface particles range from flat to round and full, and are scored on a scale of 1-5, with round and full particles being 5 points and flat being 1 point.

[0047] Solidity of fabric particles: Fabric particles are scored from weak to strong on a scale of 1-5, with strong particles receiving 5 points and weak particles receiving 1 point.

[0048] Distribution uniformity of fabric particles: The fabric surface is scored from uneven to uniform on a scale of 1-5, with uniform distribution of fabric particles being 5 points and uneven distribution being 1 point.

[0049] Fabric feel: The fabric feel ranges from stiff and rough to soft and smooth, and is rated on a scale of 1-5, with soft and smooth fabric receiving 5 points and stiff and rough fabric receiving 1 point.

[0050] Observe the flatness of the flat side of the fabric (the side without particles): the fabric surface changes from uneven to flat, and is scored on a scale of 1-5, with a flat surface being 5 points and an uneven distribution being 1 point.

[0051] Observe the thickness of the flat surface of the fabric (the side without particles): the fabric is scored from thin to thick on a scale of 1-5, with thick fabric being 5 points and thin distribution being 1 point.

[0052] Hair loss detection:

[0053] Experimental materials:

[0054] The degradable lambskin fabric obtained in the example and the lambskin fabric obtained in the comparative example were used as samples to be tested.

[0055] Transparent tape, model CT-18, width 18 mm, length 35 mm, purchased from Japan Michelbon Co., Ltd.

[0056] Weight block, 500g.

[0057] Experimental operation:

[0058] The first step is to lay the sample with particles facing upward on the table;

[0059] The second step is to lay the adhesive surface of the transparent tape flat on the side of the sample with particles in the first step;

[0060] Step 3: After placing the weight block on the transparent tape in step 2 for 5 seconds, gently tear off the transparent tape from the sample to be tested;

[0061] Step 4, stick the transparent tape in the step 3 to the side of the sample with particles in the step 1, where the position of the side of the sample with particles is different from the position of the side of the sample with particles in the step 2;

[0062] Step 5. Repeat steps 3 and 4 in sequence for 4 times. When the process reaches step 3 for the 4th time, stop the process to obtain the transparent tape after the experiment.

[0063] Experimental results:

[0064] After the test, the percentage of hairiness on the adhesive surface of the transparent tape is recorded as the hairiness, and then the test is graded according to the following standards:

[0065] Level 1: The hairiness on the adhesive surface of the transparent tape after the test is ≥80%;

[0066] Second level: 50% ≤ The hairiness on the adhesive surface of the transparent tape after the test is less than 80%;

[0067] Level 3: 20% ≤ The hairiness on the adhesive surface of the transparent tape after the test is less than 50%;

[0068] Level 4: 10% ≤ The hairiness on the adhesive surface of the transparent tape after the test is less than 20%;

[0069] Level 5: 0% ≤ The amount of hairiness on the adhesive surface of the transparent tape after the test is less than 10%.

[0070] The same sample was subjected to three parallel experimental operations, and the final experimental result was the average of the experimental results of the three experimental operations.

[0071] Example

[0072] Example 1

[0073] A degradable lambskin fabric is woven from 1.1 kg of connecting yarn and 8.9 kg of blended yarn through a loom, calculated based on the preparation of a grey cloth with a total weight of 10 kg;

[0074] The above-mentioned degradable lambskin fabric is prepared by the following steps:

[0075] S1 Weaving process: Referring to the table below, 1.1 kg of connecting yarn and 8.9 kg of blended yarn are woven in a loom.

[0076]

[0077] In the embodiment of the present application, the loom model is UFX-1.5TJ, which is a Lida towel loom;

[0078] The connecting yarn is 144D / 120F Tencel filament yarn, purchased from Lenzing Fiber (Shanghai) Co., Ltd.;

[0079] The blended yarn is customized and is made of 80% shrink-proof wool and 20% Tencel fiber by weight percentage. The fineness is 16N / 2 and it is purchased from Zhejiang Zhongding Textile Co., Ltd.

[0080] S2 Dyeing Process

[0081] S21 degreasing: according to the bath ratio of the grey cloth and the degreasing agent aqueous solution of 1:12, water was added to the dyeing machine (the model is the Japanese version, purchased from China Machinery Technology Co., Ltd.), and then 1g / L of degreasing agent Sinmorle SL-376N was added to the water and stirred evenly to obtain the degreasing agent aqueous solution. The grey cloth in S1 was placed in the degreasing agent aqueous solution at 80°C, degreased for 20 minutes, and then the degreasing agent aqueous solution was discharged to obtain the degreased grey cloth.

[0082] Among them, the degreasing agent Sinmorle SL-376N was purchased from LIMING GROUP.

[0083] The running speed of the grey cloth in the degreasing agent aqueous solution in S21 is 120s / r, wherein s represents seconds, r represents revolutions, and s / r represents the time required for the grey cloth to make one revolution in the dye vat of the dyeing machine.

[0084] S22 dyeing: according to the bath ratio of the grey cloth to the dye bath being 1:12, water is added to the dyeing machine, and then 0.5 g / L of chelating agent CA-170 and 20 g / L of sodium sulfate are added into the water, stirred and mixed, and then the temperature is raised to 40°C, and then 0.62% Yellow BF-3R, 0.37% RED BF-RFN and 0.51% BLUE EL-NR are added, stirred and mixed to obtain a dye bath.

[0085] Add the grey cloth degreased with S21 into the dye bath. When the temperature rises to 60°C, add 5g / L of soda ash Na2CO3 into the water. After stirring and mixing, keep the mixture warm for 60 minutes to obtain the dyed grey cloth.

[0086] Among them, the chelating agent CA-170 was purchased from LIMING GROUP;

[0087] Yuanming powder, purchased from Huaian Yuanming powder Co., Ltd. of Nanfeng Group;

[0088] The running speed of the grey cloth after S21 degreasing in the dye bath is 110-120s / r.

[0089] S21 After degreasing, the grey cloth is in the dye bath, and the temperature and time of the dye bath are controlled as follows:

[0090] The temperature was raised from room temperature to 40°C at a heating rate of 2°C / min, and then raised from 40°C to 60°C at a heating rate of 1°C / min, and kept warm for 60 minutes; the dye solution was discharged to obtain the dyed grey cloth.

[0091] S22 Soap washing: according to the bath ratio of the grey cloth and the soap washing aqueous solution of 1:12, add water and 2g / L soaping agent RC-425A into the dyeing machine, stir and mix evenly, heat the soap washing aqueous solution to 85°C, use the soap washing aqueous solution to wash the grey cloth dyed in S21 for 10 minutes, discharge the soap washing aqueous solution, then add water into the dyeing machine, heat the aqueous solution to 60°C, wash the grey cloth for 10 minutes, and obtain the washed grey cloth.

[0092] S23 dehydration: dehydrating the grey cloth soaped in S22 for 3 minutes to obtain a dehydrated grey cloth.

[0093] S24 opening: the grey cloth dehydrated in S23 is transferred to the opening machine for opening, and the speed is 40m / min to obtain the grey cloth after opening, wherein the width of the grey cloth is 160cm.

[0094] S3 post-processing

[0095] S31 auxiliary agent setting: according to the bath ratio of the grey cloth and the softener aqueous solution of 1:3, water and 20g / L softener NVS (purchased from Archroma Management LLC) were added to the setting machine. The grey cloth after S24 opening was immersed in the slugging groove of the setting machine to obtain the grey cloth after auxiliary agent setting. Among them, the liquid carrying rate of the grey cloth after auxiliary agent setting was 75-90%, the speed of the setting machine was 14m / min, and the pressure of the roller was 30N.

[0096] S32 napping: including the first napping and the second napping. After the S31 auxiliary agent is fixed, the grey cloth is firstly napped for the first time and then napped for the second time to obtain the napped grey cloth;

[0097] The first roughing is carried out in the first roughing machine, and the second roughing is carried out in the second roughing machine;

[0098] The first and second napping machines are both NSC10 / 20-AMJ, purchased from Italy.

[0099] The process parameters involved in roughening are shown in the following table.

[0100]

[0101] S33 intermediate shaping: shaping the grey cloth after napping in S32 at a temperature of 130° C., an overfeed of 10%, and a cloth feeding speed of 40 m / min to obtain the grey cloth after intermediate shaping.

[0102] S34 combing: combing the grey cloth after the intermediate shaping in S33 to obtain the combed grey cloth;

[0103] Among them, the carding machine, model EG0016, was purchased from Italy;

[0104] The process parameters involved in combing wool are shown in the following table.

[0105]

[0106]

[0107] S35 polarization: In the drum dryer, the S34 combed grey cloth is first treated with 100°C steam for 60 minutes, and then dried at 100°C for 120 minutes. After the cloth surface is cooled to 30°C, the polarized grey cloth is obtained, wherein the steam pressure is 3KG.

[0108] S36 front shearing: the grey fabric after the S34 polarization is sheared on the front in a shearing machine to obtain the grey fabric after the front shearing;

[0109] Among them, the shearing machine, model is GMI100, brand is LAFER, and the process parameters involved in front shearing are shown in the following table.

[0110]

[0111] S37 back shearing: the grey cloth after the front shearing in S36 is sheared on the back in a shearing machine to obtain the grey cloth after the back shearing;

[0112] Among them, the process parameters involved in reverse shearing are shown in the following table.

[0113]

[0114]

[0115] S38 final shaping: the grey cloth after reverse shearing in S37 is transferred to an oven and shaped at a temperature of 130° C., a speed of 40 m / min, and an overfeed of 3%, to obtain a degradable lambskin fabric.

[0116] S39 rolling: rolling the biodegradable lambskin fabric that has been finally shaped in S38 into a roll on a rolling machine, so as to obtain the biodegradable lambskin fabric in a roll.

[0117] Example 2

[0118] A degradable lambskin fabric is different from Example 1 in that the blended yarn is blended with 70% shrink-proof wool and 30% Tencel fiber by weight, and the fineness of the blended yarn is 16N / 2.

[0119] Example 3

[0120] A degradable lambskin fabric is different from Example 1 in that the blended yarn is blended with 90% shrink-proof wool and 10% Tencel fiber by weight, and the fineness of the blended yarn is 16N / 2.

[0121] The degradable lambskin fabrics obtained in the above Examples 1-3 were tested for fabric style and hair loss, and the test results are shown in the following table.

[0122]

[0123] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0124] From the data analysis of the above table, it can be seen that the degradable lambskin fabrics obtained in Examples 1-3 of the present application have full marks for the size of the fabric particles, the shape of the fabric particles, the firmness of the fabric particles, the uniformity of the distribution of the fabric particles, and the flatness of the fabric surface distribution, and the hair loss detection is as high as level 5. This shows that the degradable lambskin fabrics obtained in Examples 1-3 of the present application have good fabric style and less hair loss.

[0125] Embodiment 4-6

[0126] A degradable lambskin fabric, which is different from Example 1 in that the fineness of the connecting yarn and the blended yarn is as shown in the following table.

[0127]

[0128] The degradable lambskin fabrics obtained in Examples 4-6 above were tested for fabric style and hair loss, and the test results are shown in the following table.

[0129]

[0130] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0131] Data analysis of the above table shows that the degradable lambskin fabrics obtained in Examples 4-6 of the present application have full marks for the size of the fabric particles, the shape of the fabric particles, the firmness of the fabric particles, the uniformity of the fabric particle distribution, and the flatness of the fabric surface distribution, and the hair loss detection is as high as level 5. This shows that in the total raw materials for preparing the degradable lambskin fabric of the present application, when the fineness of the blended yarn is (12-18) N / 2 and the fineness of the connecting yarn is 1.2 dpf or 3 dpf, the final fabric has a good fabric style and less hair loss.

[0132] Through further analysis of the above table, it can be seen that in Example 1 and Examples 4-6, the change in the fineness of the shrink-proof wool and Tencel fiber has an impact on the feel of the cloth. The reason may be that the larger the count, the finer the shrink-proof wool, so the obtained cloth particles are softer and smoother.

[0133] In particular, in Example 1 and Examples 4-6, the fabric obtained in Example 1 has moderate softness.

[0134] Embodiment 7-8

[0135] A degradable lambskin fabric, which is different from Example 1 in that, in the S1 weaving process, the yarn tension of the blended yarn is shown in the following table.

[0136]

[0137] The degradable lambskin fabrics obtained in the above Examples 7-8 were tested for fabric style and hair loss, and the test results are shown in the following table.

[0138]

[0139] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0140] Data analysis of the above table shows that the degradable lambskin fabrics obtained in Examples 7-8 of the present application have full marks for the size of the fabric particles, the shape of the fabric particles, the firmness of the fabric particles, the uniformity of the fabric particle distribution, and the flatness of the fabric surface distribution, and the hair loss detection is as high as 4.7 or above. This shows that in the preparation steps of the degradable lambskin fabric of the present application, when the yarn tension of the blended yarn is 12-18g and the yarn tension of the connecting yarn is 32-38g, the fabric finally obtained has a good fabric style and less hair loss.

[0141] Examples 9-10

[0142] A degradable lambskin fabric, which is different from Example 1 in that, in the S1 weaving process, the yarn tension of the blended yarn is shown in the following table.

[0143]

[0144] The degradable lambskin fabrics obtained in Examples 9-10 above were tested for fabric style and hair loss, and the test results are shown in the following table.

[0145]

[0146] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0147] Data analysis of the above table shows that the degradable lambskin fabrics obtained in Examples 1, 9, and 10 of the present application have a flatness score of 4.8-5 points for the flat surface distribution, a flat surface thickness score of 2.1-3.0 points, full marks for the size of the surface particles, the shape of the surface particles, the firmness of the surface particles, and the uniformity of the surface particle distribution, and a hair loss detection of 4.7 or above. This shows that in the preparation steps of the degradable lambskin fabric of the present application, when the coil length of the blended yarn is 455-465 inches / r and the coil length of the connecting yarn is 218-228 inches / r, the final fabric has a good surface style and less hair loss.

[0148] Embodiment 11

[0149] A degradable lambskin fabric is different from Example 1 in that, in the S3 post-finishing process, S32 napping, S34 combing, S35 shaking and S36 front shearing are different.

[0150] In S32 napping, the bending speed of the first napping machine is 143.2RPM; the bending speed of the second napping machine is 134.7RPM;

[0151] In S34 combing, the speed of curved needle is 90RPM; the speed of straight needle is 90RPM; the speed of roller is 125RPM;

[0152] In S35 polarization, the grey fabric after S34 combing is first treated with 95°C steam for 65 minutes, and then dried at 105°C for 110 minutes. After the fabric surface is cooled to 30°C, the grey fabric after polarization is obtained, wherein the steam pressure is 3KG.

[0153] When shearing on the front side of S36, the distance between the round knife and the bottom knife is 4.2 inches; the distance between the bottom knife and the bottom knife is 0.4 inches.

[0154] Example 12

[0155] A degradable lambskin fabric is different from Example 1 in that, in the S3 post-finishing process, S32 napping, S34 combing, S35 shaking and S36 front shearing are different.

[0156] In S32 napping, the bending speed of the first napping machine is 163.2RPM; the bending speed of the second napping machine is 154.7RPM;

[0157] In S34 combing, the speed of curved needle is 100RPM; the speed of straight needle is 100RPM; the speed of roller is 130RPM;

[0158] In S35 polarization, the grey fabric after S34 combing is first treated with 90°C steam for 70 minutes, and then dried at 95°C for 125 minutes. After the fabric surface is cooled to 30°C, the grey fabric after polarization is obtained, wherein the steam pressure is 3KG.

[0159] When shearing on the front side of S36, the distance between the round knife and the bottom knife is 4.2-5.0 inches; the distance between the bottom knife and the bottom knife is 0.4-0.6 inches.

[0160] The degradable lambskin fabrics obtained in the above Examples 11-12 were tested for fabric style and hair loss, and the test results are shown in the following table.

[0161]

[0162]

[0163] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0164] Data analysis of the above table shows that the degradable lambskin fabrics obtained in Examples 1, 11, and 12 of the present application have a cloth particle score of up to 4.6-5 points, a cloth particle shape score of up to 4.7-5 points, a cloth particle firmness of up to 4.9-5 points, a cloth particle distribution uniformity of up to 4.8-5 points, a cloth flat surface distribution flatness score of 5 points, and a hair loss detection of up to level 5. This shows that in the preparation steps of the degradable lambskin fabric of the present application, under the process conditions of S32 napping, S34 combing, S35 shaking, and S36 front shearing of the present application, the final fabric has a good cloth style and less hair loss.

[0165] Comparative Example

[0166] Comparative Example 1

[0167] A lambskin fabric is different from Example 1 in that the blended yarn is blended with 60% shrink-proof wool and 40% Tencel fiber by weight percentage.

[0168] Comparative Example 2

[0169] A lambskin fabric is different from Example 1 in that the blended yarn is blended with 95% shrink-proof wool and 5% Tencel fiber by weight percentage.

[0170] The lambskin fabrics obtained in the above comparative examples 1-2 were tested for fabric style, and the test results are shown in the following table.

[0171]

[0172] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0173] Data analysis of the above table shows that, relative to Example 1, the degradable lambskin fabrics obtained in Comparative Examples 1 and 2 have a uniformity of particle distribution on the surface as low as 2.2-2.4 points, a score of flatness distribution on the surface as low as 2-2.2 points, and a low rating for hair loss detection. This shows that in the total raw materials for preparing the degradable lambskin fabric of the present application, when the blended yarn is blended by 70-90% of shrink-proof wool and 10-30% of Tencel fiber by weight percentage, the resulting fabric has a good surface style and less hair loss.

[0174] At the same time, the inventors also tried to use an equal amount of 32STK / 1 cotton to replace the connecting yarn for the preparation of lambskin fabric. However, during the S1 weaving process, some yarns were cracked and the resulting grey cloth had holes. Therefore, the inventors no longer carried out subsequent process operations on the grey cloth with holes. This shows that the degradable lambskin fabric of the present application overcomes the production problem of lambskin fabric with high wool content.

[0175] Comparative Examples 3-5

[0176] A lambskin fabric, which is different from Example 1 in that the fineness of the connecting yarn and the blended yarn is as shown in the following table.

[0177]

[0178] The lambskin fabrics obtained in the above comparative examples 3-4 were tested for fabric style and hair loss, and the test results are shown in the following table.

[0179]

[0180]

[0181] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0182] Data analysis of the above table shows that, relative to Example 1, the score of the degradable lambskin fabric obtained in Comparative Example 3 for the hand feel of the fabric is as low as 2.3 points, the score of the degradable lambskin fabric obtained in Comparative Example 4 for the size of the fabric particles is as low as 3.5 points, and the score of the degradable lambskin fabric obtained in Comparative Example 5 for the hand feel of the fabric is as low as 2.5 points, and the hair loss detection level is significantly reduced. This shows that in the total raw materials for preparing the degradable lambskin fabric of the present application, the fineness of the blended yarn is (12-18) N / 2, and the fineness of the connecting yarn is 1.2 or 3 dpf, which can significantly improve the hand feel of the fabric and the size of the fabric particles, and reduce the hair loss of the fabric.

[0183] Comparative Example 6

[0184] A lambskin fabric is different from Example 1 in that, in the S3 post-finishing process, S32 napping, S34 combing and S35 polarizing are different.

[0185] In S32 napping, the bending speed of the first napping machine is 140RPM; the bending speed of the second napping machine is 130RPM;

[0186] In S34 combing, the speed of curved needle is 85RPM; the speed of straight needle is 85RPM; the speed of roller is 110RPM;

[0187] In S35 polarization, the grey fabric after S34 combing is first treated with 80°C steam for 80 minutes, and then dried at 100°C for 120 minutes. After the fabric surface is cooled to 30°C, the grey fabric after polarization is obtained, wherein the steam pressure is 3KG.

[0188] Comparative Example 7

[0189] A lambskin fabric is different from Example 1 in that, in the S3 post-finishing process, S32 napping, S34 combing and S35 polarizing are different.

[0190] In S32 napping, the bending speed of the first napping machine is 169RPM; the bending speed of the second napping machine is 159RPM;

[0191] In S34 combing, the speed of curved needle is 110RPM; the speed of straight needle is 110RPM; the speed of roller is 135RPM;

[0192] In S35 pelletizing, the grey fabric after S34 combing is first treated with 100°C steam for 60 minutes, and then dried at 100°C for 100 minutes. After the fabric surface is cooled to 30°C, the pelletized grey fabric is obtained, wherein the steam pressure is 3KG.

[0193] The lambskin fabrics obtained in the above comparative examples 6-7 were tested for fabric style, and the test results are shown in the following table.

[0194]

[0195] Table Notes: Large particles are 5 points, small particles are 1 point; round and full particle shape is 5 points, flat and collapsed is 1 point; solid particles are 5 points, loose particles are 1 point; even particle distribution on the fabric is 5 points, uneven particle distribution is 1 point; soft and smooth fabric surface is 5 points, stiff and rough is 1 point; flat fabric surface is 5 points, uneven particle distribution is 1 point; flat and thick fabric surface is 5 points, thin fabric surface is 1 point.

[0196] Data analysis of the above table shows that, relative to Example 1, the degradable lambskin fabrics obtained in Comparative Examples 6-7 have a score as low as 2.1-2.5 for the size of the fabric particles, a score as low as 1.5-1.9 for the properties of the fabric particles, a score as low as 1.8-2.1 for the firmness of the fabric particles, a score as low as 1.6-1.8 for the uniformity of the distribution of the fabric particles, and a score as low as 3.2-3.5 for the feel of the fabric. This indicates that in the preparation steps of the degradable lambskin fabric of the present application, by controlling the process conditions of S32 napping, S34 combing, S35 shaking, and S36 front shearing, the fabric style of the fabric finally obtained can be improved.

[0197] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A method for preparing a degradable lambskin fabric, characterized in that: Woven from connecting yarn and blended yarn; The connecting yarn is Tencel filament; The blended yarn is formed by blending 70-90% of shrink-proof wool and 10-30% of Tencel fiber by weight percentage; The fineness of the blended yarn is (12-18) N / 2; The fineness of each single fiber in the Tencel filament is 1.2 or 3 dpf; Where, dpf=D / F, D is the denier, and F is the number of single fibers; The preparation method of the degradable lambskin fabric comprises the following steps: S1 weaving process: weaving blended yarn and connecting yarn into grey fabric; S2 dyeing process: the grey cloth obtained in S1 is subjected to a dyeing process to obtain a grey cloth after the dyeing process; S3 post-finishing process: the grey fabric after the dyeing process obtained in S2 is subjected to auxiliary setting, napping, intermediate setting, combing, shaking, front shearing, back shearing and final setting, and then rolled to obtain a biodegradable lambskin fabric; The napping includes a first napping and a second napping. After the grey cloth is shaped by the auxiliary agent, the first napping is firstly performed, and then the second napping is performed. Among them, the bending speed of the needle for the first roughening treatment is 128.8-148.8RPM; the bending speed of the needle for the second roughening treatment is 132.9-152.9RPM; In the combing process, the speed of the curved needle is 90-100RPM; the speed of the straight needle is 90-100RPM; the speed of the roller is 120-130RPM; In the pelletizing, the S3 combed grey cloth is first treated with steam at 90-100°C for 60-65min, and then dried at 95-105°C for 110-125min, and the cloth surface is cooled to below 30°C to obtain the pelletized grey cloth.

2. The method for preparing the degradable lambskin fabric according to claim 1, characterized in that: The connecting yarn is 144D / 120F Tencel filament; the fineness of the blended yarn is 16N / 2, and the blended yarn, calculated by weight percentage, is blended with 80% shrink-proof wool and 20% Tencel fiber.

3. The method for preparing the degradable lambskin fabric according to claim 1, characterized in that: In the S1 weaving process, the yarn tension of the blended yarn is 12-18g; the yarn tension of the connecting yarn is 32-38g.

4. The method for preparing the degradable lambskin fabric according to claim 1, characterized in that: In the S1 weaving process, the coil length of the blended yarn is 12-18 inches / r; the coil length of the connecting yarn is 218-228 inches / r.

5. The method for preparing the degradable lambskin fabric according to claim 1, characterized in that: In the S2 dyeing process, the grey cloth obtained in S1 is degreased, dyed, soaped, dehydrated and opened to obtain the grey cloth after the dyeing process.

6. The method for preparing the degradable lambskin fabric according to claim 1, characterized in that: In the auxiliary agent setting of the post-finishing process S3, the grey cloth after the dyeing process obtained in S2 is immersed in a softener aqueous solution to obtain an auxiliary agent-set grey cloth with a liquid content of 75-90%.

7. The method for preparing the degradable lambskin fabric according to claim 1, characterized in that: In the front shearing of the S3 post-finishing process, the distance between the round knife and the bottom knife is 4.2-5.0 inches; the distance between the bottom knife and the bottom knife is 0.4-0.6 inches.

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