CN104389192A - A kind of manufacturing method of soft fine wrinkle imitation leather microfiber leather - Google Patents
A kind of manufacturing method of soft fine wrinkle imitation leather microfiber leather Download PDFInfo
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- CN104389192A CN104389192A CN201410716306.7A CN201410716306A CN104389192A CN 104389192 A CN104389192 A CN 104389192A CN 201410716306 A CN201410716306 A CN 201410716306A CN 104389192 A CN104389192 A CN 104389192A
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- 239000010985 leather Substances 0.000 title claims abstract description 34
- 229920001410 Microfiber Polymers 0.000 title abstract description 32
- 239000003658 microfiber Substances 0.000 title abstract description 32
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 230000037303 wrinkles Effects 0.000 title description 10
- 239000011347 resin Substances 0.000 claims abstract description 32
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 30
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000011265 semifinished product Substances 0.000 claims abstract description 12
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000000047 product Substances 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 36
- 239000002649 leather substitute Substances 0.000 claims description 9
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 229920002545 silicone oil Polymers 0.000 claims description 6
- 210000001161 mammalian embryo Anatomy 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 7
- 238000010438 heat treatment Methods 0.000 claims 3
- 239000012752 auxiliary agent Substances 0.000 claims 2
- 239000003607 modifier Substances 0.000 claims 2
- 230000001112 coagulating effect Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 238000004886 process control Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 10
- 238000005470 impregnation Methods 0.000 abstract description 8
- 238000000605 extraction Methods 0.000 abstract description 7
- 239000012790 adhesive layer Substances 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000004898 kneading Methods 0.000 abstract 1
- 239000002585 base Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000000654 additive Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Textile Engineering (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
本发明涉及超纤革的制作技术领域，尤其是涉及一种软质细皱仿真皮超纤革的制作方法。本发明提供一种柔软的、折皱细致、手感接近真皮的软质细皱仿真皮超纤革的制作方法。其工艺步骤依次为：将无纺布经过含浸槽，浸渍一定比例的PU树脂溶液，再涂布一层PU树脂溶液，然后凝固、水洗、烘干制得超纤粗胚→将超纤粗胚经过甲苯抽出生产线，通过高温抽出减量制得超纤基布半成品→通过超纤基布后整理线（上油烘干、揉皮、精磨）制得超纤基布→将离型纸依次通过一号、二号、三号涂布头，在其表面依次涂布一层面料、中料层、接着层→将涂有面料、中料和接着层的离型纸进行预热处理，然后将制得的超纤基布与涂有面料、底料的离型纸相结合，再经过烘箱进行烘干处理、分离制得半成品→将半成品进行表面真皮处理制得成品。The present invention relates to the technical field of manufacturing microfiber leather, and in particular to a method for manufacturing soft fine-wrinkle simulated leather microfiber leather. The present invention provides a method for manufacturing soft fine-wrinkle simulated leather microfiber leather which is soft, finely wrinkled and has a hand feel close to that of genuine leather. The process steps are as follows: pass the non-woven fabric through an impregnation tank, impregnate a certain proportion of PU resin solution, then apply a layer of PU resin solution, and then solidify, wash and dry to obtain a microfiber rough blank → pass the microfiber rough blank through a toluene extraction production line, and obtain a microfiber base cloth semi-finished product by high-temperature extraction and reduction → pass through a microfiber base cloth finishing line (oiling and drying, kneading, and fine grinding) to obtain a microfiber base cloth → pass the release paper through the No. 1, No. 2, and No. 3 coating heads in turn, and coat a layer of fabric, middle material layer, and adhesive layer on its surface in turn → preheat the release paper coated with the fabric, middle material and adhesive layer, and then combine the obtained microfiber base cloth with the release paper coated with the fabric and base material, and then pass through an oven for drying and separation to obtain a semi-finished product → perform surface leather treatment on the semi-finished product to obtain a finished product.
Description
技术领域 technical field
本发明涉及超纤的制作技术领域，尤其是涉及一种软质细皱仿真皮超纤革的制作方法。 The invention relates to the technical field of making superfibers, in particular to a method for making soft fine wrinkle imitation superfiber leather.
背景技术 Background technique
超细纤维合成革是由超纤基布、粘合层和面层树脂组成的类似真皮性能的高档人工皮革，毫无疑问，超纤革具有很多优异的性能，比如拉力、撕裂、剥离强度、耐酸碱性等理化性能等，这些物性已经高于真皮， 近几年随着超纤技术的不断发展，超纤的应用领域越来越广，已经广泛应用于鞋革、箱包、沙发、汽车内饰等。但是同时也不可否认，超纤和真皮比较起来手感上还有一定差距， Microfiber synthetic leather is a high-grade artificial leather that is composed of microfiber base cloth, adhesive layer and surface layer resin. There is no doubt that microfiber leather has many excellent properties, such as tensile strength, tearing, and peel strength. , acid and alkali resistance and other physical and chemical properties, etc. These physical properties are already higher than those of genuine leather. Automotive interiors, etc. But at the same time, it is undeniable that there is still a certain gap in the feel between microfiber and genuine leather.
特别是和头层皮比较，柔软度和折皱的细致度还比较欠缺，这也导致超纤无法进入高档休闲鞋、箱包等市场。 Especially compared with the first layer of leather, the softness and fineness of wrinkles are still relatively lacking, which also prevents microfiber from entering the market of high-end casual shoes, bags and so on.
发明内容 Contents of the invention
因此，针对上述问题，本发明提供了一种软质细折皱仿真皮超纤革的制作方法，通过改变传统超纤的生产工艺，含浸后增加一道涂层提升密度改善折皱，从而制得柔软、折皱细致自然，更接近于真皮的软质细折皱超纤革。 Therefore, in view of the above problems, the present invention provides a method for making soft fine wrinkle imitation leather microfiber leather. By changing the production process of traditional superfiber, adding a coating after impregnation to improve density and improve wrinkle, so as to obtain soft, The wrinkles are delicate and natural, which is closer to the soft fine wrinkled microfiber leather of genuine leather.
为达到上述目的，本发明是通过以下技术方案实现的：一种软质细折皱仿真皮超纤革的制作方法，包括如下工艺步骤： In order to achieve the above object, the present invention is achieved through the following technical solutions: a method for making soft finely wrinkled imitation leather microfiber leather, comprising the following process steps:
（1）将无纺布通过含浸槽，浸渍一定比例的粘度在8000～10000cps的PU树脂溶液；然后再涂布一层粘度为12000～15000cps的PU树脂溶液，通过上述处理的无纺布再经过凝固、水洗、烘干制得超纤基布粗胚； (1) Pass the non-woven fabric through the impregnation tank, impregnate a certain proportion of PU resin solution with a viscosity of 8000-10000cps; then coat a layer of PU resin solution with a viscosity of 12000-15000cps, and then pass through the non-woven fabric treated above Coagulate, wash, and dry to obtain a rough microfiber base cloth;
（2）将步骤(1)制得的超纤粗胚，以8～9m/mine的车速经过甲苯抽出槽，抽出槽温度控制85±5℃，甲苯循环量控制10～13m3/h，追出槽循环水量15～25m3/h； (2) Pass the superfiber rough embryo prepared in step (1) through the toluene extraction tank at a speed of 8-9m/min, control the temperature of the extraction tank at 85±5°C, control the toluene circulation rate at 10-13m 3 /h, and chase The circulating water flow out of the tank is 15-25m 3 /h;
（3）将步骤（2）制得的超纤基布半成品，经过烘干、上油、揉皮、精磨等超纤基布后整理线，制得超纤基布； (3) The microfiber base cloth semi-finished product obtained in step (2) is dried, oiled, rubbed, finely ground, etc., and the microfiber base cloth is finished to obtain a microfiber base cloth;
（4）离型纸通过一号、二号涂头，依次涂布粘度为2200～2500cps的PU树脂溶液； (4) The release paper passes through the No. 1 and No. 2 coating heads, and successively coats the PU resin solution with a viscosity of 2200-2500 cps;
（5）将步骤（4）中，已经涂布面、中料的离型纸通过三号涂布头，在中料上面涂布一层粘度为8000～10000cps的接着料； (5) In step (4), the release paper that has been coated on the surface and the middle material is passed through the No. 3 coating head, and a layer of adhesive material with a viscosity of 8000-10000cps is coated on the middle material;
（6）将步骤（5）中涂有面料、中层料和接着料的离型纸进行预热处理，然后将超纤基布与涂有面料、中层料及接着料的离型纸相结合，再经过烘箱进行烘干、分离制得半成品； (6) Preheat the release paper coated with fabric, middle material and adhesive in step (5), then combine the microfiber base fabric with the release paper coated with fabric, middle material and adhesive, and then Drying and separation in an oven to obtain semi-finished products;
（7）将步骤（6）中制得的半成品，通过处理、抛光等真皮处理后制得成品。 (7) The semi-finished product prepared in step (6) is processed by leather treatment such as processing and polishing to obtain a finished product.
通过采用前述技术方案，本发明的有益效果是：本发明通过改变传统超纤的生产工艺，含浸后增加一道涂层提升密度改善折皱，从而制得柔软、折皱细致自然，更接近于真皮的软质细折皱超纤革。 By adopting the above-mentioned technical scheme, the beneficial effect of the present invention is: the present invention changes the production process of the traditional superfiber, adds a layer of coating after impregnation to increase the density and improve the wrinkle, so as to obtain a soft, fine and natural wrinkle, which is closer to the leather. Finely creased microfiber leather.
具体实施方式 Detailed ways
以下将结合具体实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。 The implementation of the present invention will be described in detail below in conjunction with specific examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention.
本发明的实施例为： Embodiments of the present invention are:
一种软质细折皱超纤革的制作方法，包括如下工艺步骤： A method for making soft finely wrinkled microfiber leather, comprising the following process steps:
（1）将无纺布通过含浸槽，浸渍一定比例的粘度在8000～10000cps的PU树脂溶液；然后再涂布一层粘度为12000～15000cps的PU树脂溶液，通过上述处理的无纺布再经过凝固、水洗、烘干制得超纤基布粗胚； (1) Pass the non-woven fabric through the impregnation tank, impregnate a certain proportion of PU resin solution with a viscosity of 8000-10000cps; then coat a layer of PU resin solution with a viscosity of 12000-15000cps, and then pass through the non-woven fabric treated above Coagulate, wash, and dry to obtain a rough microfiber base cloth;
（2）将步骤(1)制得的超纤粗胚，以8～9m/mine的车速经过甲苯抽出槽，抽出槽温度控制85±5℃，甲苯循环量控制10～13m3/h，追出槽循环水量15～25m3/h； (2) Pass the superfiber rough embryo prepared in step (1) through the toluene extraction tank at a speed of 8-9m/min, control the temperature of the extraction tank at 85±5°C, control the toluene circulation rate at 10-13m 3 /h, and chase The circulating water flow out of the tank is 15-25m 3 /h;
（3）将步骤（2）制得的超纤基布半成品，经过烘干、上油、揉皮、精磨等超纤基布后整理线，制得超纤基布； (3) The microfiber base cloth semi-finished product obtained in step (2) is dried, oiled, rubbed, finely ground, etc., and the microfiber base cloth is finished to obtain a microfiber base cloth;
（4）离型纸通过一号、二号涂头，依次涂布粘度为2200～2500cps的PU树脂溶液； (4) The release paper passes through the No. 1 and No. 2 coating heads, and successively coats the PU resin solution with a viscosity of 2200-2500 cps;
（5）将步骤（4）中，已经涂布面、中料的离型纸通过三号涂布头，在中料上面涂布一层粘度为8000～10000cps的接着料； (5) In step (4), the release paper that has been coated on the surface and the middle material is passed through the No. 3 coating head, and a layer of adhesive material with a viscosity of 8000-10000cps is coated on the middle material;
（6）将步骤（5）中涂有面料、中层料和接着料的离型纸进行预热处理，然后将超纤基布与涂有面料、中层料及接着料的离型纸相结合，再经过烘箱进行烘干、分离制得半成品； (6) Preheat the release paper coated with fabric, middle material and adhesive in step (5), then combine the microfiber base fabric with the release paper coated with fabric, middle material and adhesive, and then Drying and separation in an oven to obtain semi-finished products;
（7）将步骤（6）中制得的半成品，通过处理、抛光等真皮处理后制得成品。 (7) The semi-finished product prepared in step (6) is processed by leather treatment such as processing and polishing to obtain a finished product.
在本发明一实施例中，所述粘度在8000～10000cps的树脂溶液由重量比为100：27～30：2：1的聚醚树脂：二甲基甲酰胺：非离子泡孔调节剂：硅油助剂组成。 In one embodiment of the present invention, the resin solution with a viscosity of 8000-10000 cps is composed of polyether resin: dimethylformamide: non-ionic cell regulator: silicone oil with a weight ratio of 100:27-30:2:1 Auxiliary composition.
在本发明一实施例中，所述粘度为12000～15000cps的PU树脂溶液由重量比为100：22～25：1.5：2的聚醚树脂：二甲基甲酰胺：非离子泡孔调节剂：硅油助剂组成。 In one embodiment of the present invention, the PU resin solution with a viscosity of 12000-15000 cps is composed of polyether resin: dimethylformamide: non-ionic cell regulator with a weight ratio of 100:22-25:1.5:2: Composition of silicone oil additives.
在本发明一实施例中，所述粘度为2200～2500cps的PU树脂溶液由重量比为100：70～80：10～15的PU树脂：二甲基甲酰胺：色粉组成。 In an embodiment of the present invention, the PU resin solution with a viscosity of 2200-2500 cps is composed of PU resin: dimethylformamide: toner in a weight ratio of 100:70-80:10-15.
在本发明一实施例中，所述粘度为8000～10000cps的接着料由重量比为 100：30～40：5：2的PU树脂：二甲基甲酰胺：固化剂：促进剂组成。 In one embodiment of the present invention, the adhesive with a viscosity of 8000-10000 cps is composed of PU resin: dimethylformamide: curing agent: accelerator in a weight ratio of 100:30-40:5:2.
在本发明一实施例中，所述步骤（1）中通过含浸槽后的涂布层量控制在0.7～0.8kg/m，y用于凝固的凝固槽浓度35%。 In an embodiment of the present invention, the amount of the coating layer after passing through the impregnation tank in the step (1) is controlled at 0.7-0.8 kg/m, and the concentration of the coagulation tank used for solidification is 35%.
在本发明一实施例中，所述步骤（6）中的结合处理的预热工艺的预热处理温度分别为70～80℃，预热时间为1min；结合处理的贴合压力控制3.5～4.5kg。 In an embodiment of the present invention, the preheating temperature of the preheating process of the combined treatment in the step (6) is 70-80°C respectively, and the preheating time is 1min; the bonding pressure of the combined treatment is controlled at 3.5-4.5 kg.
在本发明一实施例中，步骤（1）含浸PU树脂溶液的粘度可以为9000cps，含浸处方聚醚树脂：二甲基甲酰胺：非离子泡孔调节剂：硅油助剂的重量比可以为100：28：2：1，涂布层PU树脂溶液粘度可以为13000cps，涂布处方聚醚树脂：二甲基甲酰胺：非离子泡孔调节剂：硅油助的重量比可以为为100：24：1.5：2；步骤（4）中面料、中料的粘度可以是2500cps，面、中料的处方PU树脂：二甲基甲酰胺：色粉的重量比可以为100：70：12， 一号、二号涂头间隙分别是 0.1～0.12mm、0.13～0.15mm；步骤（5）中接着料的粘度可以是10000cps，底料的处方PU树脂：二甲基甲酰胺：固化剂：促进剂的重量比可以为100：30：5：2，三号涂头的间隙是为0.15～0.18mm。 In an embodiment of the present invention, step (1) the viscosity of the impregnated PU resin solution can be 9000cps, and the weight ratio of impregnated prescription polyether resin: dimethylformamide: nonionic cell regulator: silicone oil additive can be 100 : 28: 2: 1, the viscosity of the coating layer PU resin solution can be 13000cps, the weight ratio of the coating prescription polyether resin: dimethylformamide: non-ionic cell regulator: silicone oil can be 100: 24: 1.5:2; in step (4), the viscosity of the fabric and the middle material can be 2500cps, and the weight ratio of the prescription PU resin: dimethylformamide: toner for the surface and the middle material can be 100:70:12, No. 1, The gaps between the No. 2 coating head are 0.1～0.12mm and 0.13～0.15mm respectively; the viscosity of the bonding material in step (5) can be 10000cps, and the prescription of the base material is PU resin: dimethyl formamide: curing agent: the weight of the accelerator The ratio can be 100:30:5:2, and the gap of No. 3 coating head is 0.15~0.18mm. the
以上各具体步骤中涉及的温度、线速度、各种物质的重量比、粘度范围实际上是限定一个可行并且理想的范围，使用各取值范围内的任一数值都可以实现发明的目的，同时，各工艺步骤中涉及到的设备如烘箱、含浸槽、甲苯减量抽出槽、涂布头等属公知技术，所以对其结构不作具体的描述。 The temperature involved in the above specific steps, the linear velocity, the weight ratio of various substances, and the viscosity range actually limit a feasible and ideal range, and the purpose of the invention can be achieved by using any numerical value in each value range. , The equipment involved in each process step, such as oven, impregnation tank, toluene reduction and extraction tank, coating head, etc., belongs to known technology, so its structure will not be described in detail.
本发明通过本发明通过改变传统超纤的生产工艺，含浸后增加一道涂层提升密度改善折皱，从而制得柔软、折皱细致自然，更接近于真皮的软质细折皱超纤革。 The present invention changes the traditional microfiber production process, adds a layer of coating after impregnation to increase density and improve wrinkle, so as to produce soft fine wrinkled microfiber leather that is soft, fine and natural in wrinkle, and closer to genuine leather.
以上所记载，仅为利用本创作技术内容的实施例，任何熟悉本项技艺者运用本创作所做的修饰、变化，皆属本创作主张的专利范围，而不限于实施例所揭示者。 The above records are only examples of using the technical content of this creation. Any modifications and changes made by those who are familiar with this technology using this creation belong to the scope of patents claimed by this creation, and are not limited to those disclosed in the examples.
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