WO2011131110A1 - 一种环保皮革及其制备方法 - Google Patents

一种环保皮革及其制备方法 Download PDF

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Publication number
WO2011131110A1
WO2011131110A1 PCT/CN2011/072906 CN2011072906W WO2011131110A1 WO 2011131110 A1 WO2011131110 A1 WO 2011131110A1 CN 2011072906 W CN2011072906 W CN 2011072906W WO 2011131110 A1 WO2011131110 A1 WO 2011131110A1
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Prior art keywords
friendly
leather
environmentally
polyurethane coating
paper
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PCT/CN2011/072906
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English (en)
French (fr)
Inventor
周兴葵
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深圳市星辉盛业科技有限公司
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Priority claimed from CN 201010170186 external-priority patent/CN101812807A/zh
Priority claimed from CN 201010156101 external-priority patent/CN101871169A/zh
Application filed by 深圳市星辉盛业科技有限公司 filed Critical 深圳市星辉盛业科技有限公司
Publication of WO2011131110A1 publication Critical patent/WO2011131110A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • 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
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1607—Degradability
    • D06N2209/1614—Biodegradable
    • 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
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather

Definitions

  • the invention relates to a synthetic leather and a preparation method thereof, in particular to an environmentally-friendly leather which can be applied to the fields of clothing, footwear, furniture, surface decoration, packaging and the like and a preparation method thereof.
  • the synthetic leathers appearing in the market are mostly made of organic solvent type PU resin as the base layer and the top layer, that is, the PU leather is obtained; this type of PU resin is passed through toluene, xylene, acetone, methyl ethyl ketone, ethyl acetate, Dimethylformamide or the like is obtained as a solvent by a solvent polymerization method, and these organic solvents are harmful substances, and a process of foaming and synthesizing PU leather generates a gas harmful to the human body, affects the body health, and harmful substances pass through the water. And air emissions, serious pollution of the environment, poor environmental protection.
  • the current PU leather is difficult to degrade, discarded in the Bairan world, and has a long residence time, forming toxic waste, posing a major threat to people's production, life, and public health.
  • An environmentally friendly leather comprising an environmentally friendly paper substrate and a polyurethane coating layer laminated to the substrate.
  • the polyurethane coating is bonded to the surface of the eco-friendly paper substrate by knife coating, and an adhesive is provided between the eco-friendly paper substrate and the polyurethane coating.
  • the green paper substrate is also bonded with a reinforced textile layer.
  • the polyurethane coating may be one or more layers on the surface of the eco-friendly paper substrate, and may include a base layer and a color layer in a plurality of layers.
  • a method for preparing an environmentally-friendly leather comprising an environmentally-friendly paper substrate and a polyurethane coating layer composited on the substrate, comprising the steps of:
  • the ambient temperature of the above manufacturing process needs to be controlled below 70 °C.
  • the present invention can also be produced by the following method:
  • a method for preparing an environmentally-friendly leather comprising an environmentally-friendly paper substrate and a polyurethane coating layer composited on the substrate, comprising the steps of:
  • step 3 using the transfer or bonding method to composite the polyurethane coating obtained in step 2) onto the environmentally-friendly paper selected in step 1);
  • the ambient temperature of the above manufacturing process needs to be controlled below 70 °C.
  • the environmental protection leather provided by the invention has the advantages of being non-toxic, recyclable and easy to be decomposed; in the natural environment of sunlight, ultraviolet rays and sun and rain, it will oxidize and decompose in a short time, return to the earth, and not generate Toxic or polluted water.
  • Another advantage of the present invention is to provide a brand-new environmentally-friendly polyurethane innovation product, which can completely replace the existing polyurethane synthetic leather in the fields of luggage, high-grade packaging, and the like, and has a simple structure, easy to manufacture, and no foaming art.
  • the production cost is low, the energy saving and emission reduction effects are achieved, and the social and economic benefits are extremely high, which helps to promote the development of social environmental protection and protect the human living environment.
  • the preparation method of the environmentally-friendly leather provided by the invention has the advantages of single process and easy implementation, and does not generate harmful gas to the human body in the production process, achieves the effects of energy conservation and emission reduction, and has extremely high social and economic benefits. It will help promote the development of social environmental protection and protect the living environment of human beings.
  • the environmentally-friendly leather produced according to the preparation method has the advantages of being non-toxic, recyclable and easy to be decomposed; in the natural environment of sunlight, ultraviolet rays and sun and rain, it will oxidize and decompose in a short time, returning to the earth, Produce poisonous gas or pollute water.
  • 1 is a schematic structural view of an environmentally friendly leather of an embodiment of the wood invention
  • FIG. 2 is a schematic structural view of an environmentally friendly leather according to another embodiment of the present invention. detailed description
  • the leather is composed of an environmentally-friendly paper substrate 1 composite polyurethane coating 2; the polyurethane coating 2 is bonded to the surface of the environmentally-friendly paper substrate 1 by knife coating, and is disposed on the environmentally-friendly paper substrate 1
  • An adhesive 3 is provided between the polyurethane coatings 2.
  • the polyurethane coating 2 can be one or more layers on the surface of the environmentally-friendly paper substrate, and the base layer and the color layer can be included in the multi-layer, which increases the pleochroism of the leather surface and improves the gloss.
  • the polyurethane coating can be a two-component or one-component polyurethane coating or a thermosetting polyurethane coating or a room temperature curing polyurethane coating or a PUA (polyurethane, polyacrylic) composite coating.
  • the environmentally-friendly paper of the corresponding size and thickness is selected as the substrate 1 , and the environmentally-friendly paper is the synthetic paper described in the Chinese Patent No. 01136182.4 (CN1213847C), which can be purchased from the market.
  • the polyurethane coating 2 is laminated on the surface of the eco-friendly paper substrate 1 by a doctoring process to form a surface layer of the leather, and the polyurethane coating 2 is also formed with a texture as needed to obtain a multi-style leather.
  • the composite part on the environmentally-friendly paper substrate is also coated with an adhesive 3, such as a reactive adhesive, to reinforce the composite force between the polyurethane coating 2 and the green paper substrate 1 so as to be cured. It will not crack afterwards, the compounding will be tighter, the product life will be longer, and the surface layer of leather will not fall off easily.
  • the composite polyurethane coating 2 combines the polyurethane coating 2 and the environmentally-friendly paper substrate 1 to form a leather, and the polyurethane coating 2 also generates a texture as needed.
  • the synthetic leather structure is simple and easy to prepare. Compared with the traditional PU leather, no foaming process is required, the production cost is low, the energy saving and emission reduction effects are achieved, and the social benefit is extremely high. Economic benefits; the environmentally-friendly leather obtained has the advantages of non-toxic, recyclable and recyclable; it is easy to decompose. In the natural environment of sunlight, ultraviolet light and sun and rain, it will oxidize and decompose in a short time, returning to the earth, no Hazardous waste will be formed, no toxic gases and polluted water sources will be produced.
  • FIG. 2 is a schematic structural view of an environmentally-friendly leather according to another embodiment of the present invention.
  • a reinforced textile layer 4 is adhered to the lower side of the environmentally-friendly paper substrate 1, such as Textile fabrics, fibers, etc., to enhance the tensile strength of the leather, to obtain good elasticity and tension, not easy to break, to meet the needs of many fields.
  • the environmentally friendly leather provided by the invention is a revolutionary innovation from the perspective of environmental protection, to solve the problem of non-environmental protection of the traditionally used PU leather, and effectively promote the development of synthetic leather.
  • the eco-friendly leather can be applied to clothing, footwear, furniture, surface decoration, packaging, etc. It is non-toxic, non-polluting, and effectively protects the human living environment, which is conducive to the healthy development of people's lives.
  • the preparation method of the environmentally-friendly leather of the invention adopts environmentally-friendly paper as the base material composite polyurethane coating to obtain environmentally friendly leather which is non-toxic, recyclable and easy to be decomposed.
  • Production can be carried out by the following steps:
  • coating which is coated with one or more layers of polyurethane coating on the selected environmentally-friendly paper, so that the polyurethane coating is composited on the surface of the environmentally friendly paper to form a surface layer; before the polyurethane coating is compounded, on the environmentally friendly paper base
  • the composite part of the material is also coated with an adhesive, such as a reactive adhesive, to enhance the composite force between the polyurethane coating and the green paper substrate, so that it does not crack after curing, the compounding is tighter, and the product life is longer.
  • the top layer of leather is not easy to fall off.
  • curing treatment is carried out by heating, such as using a baking machine for baking, but the temperature needs to be controlled above 30 °C and below 70 °C , to ensure that the environmentally friendly paper does not soften.
  • the ambient temperature for the above preparation process needs to be controlled below 0 °C and below 70 °C.
  • the foil-cutting technique can also be carried out to realize partial decals, such as marking, text display, etc. for a specific part, and finally performing subsequent printing, embossing, spraying and surface treatment.
  • the preparation method of the environmentally-friendly leather of the present invention can also be completed by the following steps: 1), select materials, according to the requirements of the leather produced, select the appropriate size and thickness of environmentally friendly paper; environmentally friendly paper is the synthetic paper described in China No. 01136182.4 (CN1213847C), which can be purchased from the market;
  • step 3 using the transfer or bonding method to composite the polyurethane coating obtained in step 2) onto the environmentally-friendly paper selected in step 1);
  • the ambient temperature for the above preparation process needs to be controlled below 0 °C and below 70 °C.
  • the ambient temperature during the entire preparation process was room temperature.
  • the radial tensile load was 27 N/cm
  • the latitudinal tensile load was 26 N/cm
  • the radial elongation at break was 200%
  • the latitudinal elongation at break was 160%.
  • This environmentally friendly leather can replace the existing polyurethane synthetic leather in the packaging materials of high-end packaging boxes such as wine packaging boxes or packaging materials for notebook computers.
  • the method for manufacturing environmentally-friendly leather provided by the invention has the advantages of simple process and easy implementation, and does not generate harmful gas to the human body during the production process, and achieves energy saving and emission reduction effects, and has high social and economic benefits;
  • the resulting eco-friendly leather has the advantages of non-toxic, recyclable and recyclable; it is easy to decompose. Under the natural environment of sunlight, ultraviolet light and sun and rain, it will oxidize and decompose in a short time, return to the earth, and will not generate poison gas or Polluted water source.

Description

一种环保皮革及其制备方法 技术领域
本发明涉及一种合成革及其制备方法， 尤其是一种可应用于服饰、 鞋类、 家具、 表面装饰、 包装等领域的环保皮革及其制备方法。 背景技术
目前， 市面出现的合成革多是采用有机溶剂型的 PU树脂作为基层和面层 制成， 即获得 PU革； 这种类型的 PU树脂通过甲苯、 二甲苯、 丙酮、 丁酮、 乙 酸乙脂、 二甲基甲酰胺等作为溶剂以溶剂聚合法制得， 而这些有机溶剂皆为有 害物质， 在发泡合成 PU革的过程产生有对人体有害的气体， 影响身体健康， 而且有害物质还会通过水和空气排放， 严重污染环境， 环保性差。 此外， 众所 周知， 目前的 PU 革难以降解， 废弃在白然界中， 停留时间长， 形成有毒垃 圾， 给人们的生产、 生活、 公众的生命健康构成重大威胁。
随着人类文明社会的发展， 社会各界对环保的意识逐步增强， 市面也随之 出现各种环保产品， 如中国第 01 1 36182. 4 号专利， 提出了一种环保纸， 该环 保纸不仅可回收利用， 而且废弃在自然环境下， 短时间内就能氧化分解， 回归 大地， 不会产生毒气或污染水源。
但在合成革领域， 如何减少或消除生产过程中的环境污染影响及生产出易 降解的合成革， 仍是一个难题。 发明内容
本发明的目的在于提供一种以环保纸为基材， 达到易分解， 产品无毒的环 保皮革。 本发明的另一目的在于提供一种以环保纸作为基材制备环保皮革的方 法， 以克服传统生产 PU革存在的环保问题， 该制备方法工艺筒单， 易实施。
为达到上述目的， 本发明采用如下技术方案：
一种环保皮革， 该皮革包括环保纸基材和复合在所述基材上的聚氨酯涂料 层。
所述的聚氨酯涂料通过刮涂结合在环保纸基材的面上， 并在环保纸基材与 聚氨酯涂料之间设有粘合剂。 所述的环保纸基材上还粘合有加强的纺织物层。
所述聚氨酯涂料在环保纸基材的面上可为一层或多层， 多层时可包括基层 和色层。
一种环保皮革的制备方法， 该环保皮革包括环保纸基材和复合在所述基材 上的聚氨酯涂料层， 包括如下步骤：
1)、 选材， 根据所生产皮革的要求选用相应尺寸大小和厚度的环保纸；
2)、 涂布， 其是在所选的环保纸上涂覆一层或多层的聚氨酯涂料， 使聚氨 酯涂料复合在环保纸的面上；
3)、 通过印刷或压花形式在聚氨酯涂料上生成紋路， 并进行固化处理；
4)、 喷染， 生成需要的颜色；
5)、 表面处理， 形成环保皮革。
上述制作过程的环境温度需要控制在 70°C以下。
为达到上述目的， 本发明还可采用如下方法制作：
一种环保皮革的制备方法， 该环保皮革包括环保纸基材和复合在所述基材 上的聚氨酯涂料层， 包括如下步骤：
1)、 选材， 根据所生产皮革的要求选用相应尺寸大小和厚度的环保纸；
2)、 将聚氨酯涂料施加在离型纸上， 并进行固化处理；
3)、 采用转印或贴合方式将步骤 2)所得的聚氨酯涂料复合到步骤 1)选取的 环保纸上；
4)、 表面处理， 形成环保皮革。
上述制作过程的环境温度需要控制在 70°C以下。
本发明的有益技术效果在于：
本发明提供的环保皮革， 具有无毒、 可回收再利用、 易分解的优点； 在阳 光、 紫外线及日晒雨淋的大自然环境下， 短时间内将会氧化而分解， 回归大 地， 不产生毒气或污染水源。
本发明再一优点是提供了一个全新的环保聚氨酯革新品种， 在箱包、 高档 包装盒的包覆等领域可完全代替现有的聚氨酯合成革， 其结构筒单， 制作容 易、 无需发泡上艺， 制作成本低， 达到节能、 减排的功效， 具有极高地社会效 益和经济效益， 有助于推动社会环保事业的发展， 保护人类居住环境。 本发明提供的环保皮革制备方法， 具有工艺筒单、 易实施的优点， 且在生 产过程中不产生有对人体有害的气体， 达到节能、 减排的功效， 具有极高地社 会效益和经济效益， 有助于推动社会环保事业的发展， 保护人类居住环境。
依照本制备方法生产的环保皮革具有无毒、 可回收再利用， 易分解的优 点； 在阳光、 紫外线及日晒雨淋的大自然环境下， 短时间内将会氧化而分解， 回归大地， 不产生毒气或污染水源。 附图说明
图 1为木发明的一个实施例环保皮革的结构示意图；
图 2为本发明的另一实施例环保皮革的结构示意图。 具体实施方式
以下结合附图对本发明作进步说明：
本发明所述的一种环保皮革， 该皮革是由环保纸基材 1复合聚氨酯涂料 2 构成;聚氨酯涂料 2通过刮涂结合在环保纸基材 1 的面上， 并在环保纸基材 1 与聚氨酯涂料 2之间设有粘合剂 3。 其中， 聚氨酯涂料 2在环保纸基材的面上 可为一层或多层设计， 多层时可包括基层和色层， 增加皮革表面多色性， 提高 光泽。 聚氨酯涂料可以是双组分或单组分聚氨酯涂料或者热固性聚氨酯涂料或 者室温固化聚氨酯涂料或者 PUA (聚氨酯、 聚丙烯酸） 复合涂料。
制备时， 选取相应尺寸大小及厚度的环保纸作为基材 1 , 环保纸为中国第 01136182.4号专利 （ CN1213847C )所述的合成纸， 可市面采购。 然后通过刮 涂工艺将聚氨酯涂料 2复合在环保纸基材 1的面上， 构成皮革的面层， 聚氨酯 涂料 2上还根据需要生成紋路， 以获得多款式皮革。 聚氨酯涂料 2复合之前， 在环保纸基材上的复合部位还涂覆有粘合剂 3, 如反应性粘合剂， 以增强聚氨 酯涂料 2与环保纸基材 1之间的复合力， 以致固化后不会裂开， 复合更紧密， 产品寿命更长， 皮革的面层不易脱落。
附图 1所示为本发明的一个实施例环保皮革的结构示意图， 选定环保纸基 材 1后， 先是在其上侧面涂覆有粘合剂 3, 然后再在粘合剂 3的基础上复合聚 氨酯涂料 2, 使聚氨酯涂料 2和环保纸基材 1复合构成皮革， 聚氨酯涂料 2上 还根据需要生成紋路。 该合成革结构筒单， 制备容易， 相对于传统的 PU革， 无需发泡工艺， 制作成本低， 达到节能、 减排的功效， 具有极高的社会效益和 经济效益； 获得的环保皮革具有无毒、 可回收再利用的优点； 且易分解， 在阳 光、 紫外线及日晒雨淋的大自然环境下， 短时间内将会氧化而分解， 回归大 地， 不会形成有害垃圾， 不产生毒气和污染水源。
附图 2所示为本发明另一实施例环保皮革的结构示意图， 其是在图 1所示 的皮革基础上， 在环保纸基材 1 的下侧面粘合有加强的纺织物层 4, 如纺织 布、 纤维等， 从而增强皮革抗拉性， 获得良好的弹性和张力， 不易断裂， 满足 多领域使用。
本发明提供的环保皮革， 是从环保角度进行一次革命性的创新， 以解决了 传统使用的 PU革所存在的不环保问题， 有效推动合成革的发展。 该环保皮革 可应用于服饰、 鞋类、 家具、 表面装饰、 包装等领域， 无毒、 无污染， 有效保 护人类居住环境， 利于人们的生命健康发展。
本发明的环保皮革的制备方法， 是采用环保纸作为基材复合聚氨酯涂料， 以获得无毒、 可回收再利用， 易分解的环保皮革。
可通过如下步骤进行生产：
1)、 选材， 根据所生产皮革的要求选用相应尺寸大小和厚度的环保纸； 环 保纸为中国第 01136182.4号专利 （ CN1213847C ) 所述的合成纸， 可市面采 购。
2)、 涂布， 其是在所选的环保纸上涂覆一层或多层的聚氨酯涂料， 使聚氨 酯涂料复合在环保纸的面上， 形成面层； 聚氨酯涂料复合之前， 在环保纸基材 的复合部位还涂覆有粘合剂， 如反应性粘合剂， 以增强聚氨酯涂料与环保纸基 材之间的复合力， 以致固化后不会裂开， 复合更紧密， 产品寿命更长， 皮革的 面层不易脱落。
3)、 通过印刷或压花形式在聚氨酯涂料上生成紋路， 并进行固化处理； 固 化处理采用加热方式进行， 如采用烘烤机进行烘烤， 但温度需要控制在 30 °C 以上 70 °C以下， 在确保环保纸不会软化的情况下固化。
4)、 喷染， 生成需要的颜色。
5)、 表面处理， 去除毛边、 凹凸点， 使表面平整、 光滑， 形成环保皮革。 对于上述制备过程的环境温度均需要控制在 0°C以上 70°C以下。
对于上述制备过程， 在涂布后还可以进行切箔下艺， 实现局部贴花， 如特 定部位做标记、 文字显示等， 最后进行后续的印刷、 压花、 喷染及表面处理。
本发明的环保皮革的制备方法还可通过如下步骤完成： 1)、 选材， 根据所生产皮革的要求选用相应尺寸大小和厚度的环保纸； 环 保纸为中国第 01136182.4号专利 （ CN1213847C ) 所述的合成纸， 可市面采 购；
2)、 将聚氨酯涂料施加在离型纸上， 并进行固化处理；
3)、 采用转印或贴合方式将步骤 2)所得的聚氨酯涂料复合到步骤 1)选取的 环保纸上；
4)、 表面处理， 形成环保皮革。
对于上述制备过程的环境温度均需要控制在 0°C以上 70°C以下。
实施例 1
选取宽度为 1300mm、 厚度为 200 ± 20微米的按 CN1213847C专利技术制 备的环保纸； 将单组分聚氨酯涂料刮涂在离型纸上， 并在 60 ± 5 °C下进行固化 处理， 聚氨酯层的厚度为 120 ± 15微米； 采用常规的贴合方式将聚氨酯层复合 到环保纸上； 进行常规的表面处理， 形成环保皮革。 整个制备过程环境温度为 室温。 按照 QB/T 2710-2005方法测试得径向拉伸负荷为 27N/cm, 纬向拉伸负 荷为 26N/cm, 径向断裂伸长率为 200% , 纬向断裂伸长率为 160%。 本环保革 可代替现有的聚氨酯合成革应用于高档包装盒例如红酒类包装盒的包覆材料或 者笔记本电脑的包材。
本发明提供的环保皮革制作方法， 具有工艺筒单， 易实施的优点， 且在生 成过程不产生有对人体有害的气体， 达到节能、 减排的功效， 具有极高的社会 效益和经济效益； 生成的环保皮革具有无毒、 可回收再利用的优点； 且易分 解， 在阳光、 紫外线及日晒雨淋的大自然环境下， 短时间内将会氧化而分解， 回归大地， 不产生毒气或污染水源。

Claims

权利要求书
1、 一种环保皮革， 其特征在于： 该皮革包括环保纸基材和复合在所述基材 上的聚氨酯涂料层。
2、 根据权利要求 1所述的环保皮革， 其特征在于： 聚氨酯涂料通过刮涂结 合在环保纸基材的面上， 并在环保纸基材与聚氨酯涂料之间设有粘合 剂。
3、 根据权利要求 1或 2所述的环保皮革， 其特征在于： 环保纸基材上还粘 合有加强的纺织物层。
4、 根据权利要求 1或 2所述的环保皮革， 其特征在于： 聚氨酯涂料在环保 纸基材的面上可为一层或多层。
5、 一种环保皮革的制备方法， 其特征在于： 该环保皮革包括环保纸基材和 复合在所述基材上的聚氨酯涂料层， 包括如下步骤：
1)、 选材， 根据所生产皮革的要求选用相应尺寸大小和厚度的环保纸；
2)、 涂布， 其是在所选的环保纸上涂覆一层或多层的聚氨酯涂料， 使聚 氨酯涂料复合在环保纸的面上；
3)、 通过印刷或压花形式在聚氨酯涂料上生成紋路， 并进行固化处理；
4)、 喷染， 生成需要的颜色；
5)、 表面处理， 形成环保皮革。
6、 根据权利要求 5所述的环保皮革的制备方法， 其特征在于： 制备过程的 环境温度控制在 70 °C以下。
7、 一种环保皮革的制备方法， 其特征在于： 该环保皮革包括环保纸基材和 复合在所述基材上的聚氨酯涂料层， 包括如下步骤：
1)、 选材， 根据所生产皮革的要求选用相应尺寸大小和厚度的环保纸；
2)、 将聚氨酯涂料施加在离型纸上， 并进行固化处理；
3)、 采用转印或贴合方式将步骤 2)所得的聚氨酯涂料复合到步骤 1)选取 的环保纸上；
4)、 表面处理， 形成环保皮革。
8、 根据权利要求 7所述的环保皮革的制备方法， 其特征在于： 制备过程的 环境温度控制在 70 °C以下。
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