技术领域technical field
本发明涉及铝箔制造技术领域，具体为一种耐蚀耐磨有色涂层铝箔的制造方法。The invention relates to the technical field of aluminum foil manufacturing, in particular to a method for manufacturing a corrosion-resistant and wear-resistant colored coated aluminum foil.
背景技术Background technique
铝箔是一种薄片型金属铝制品，铝箔因其具备质地柔软且延展性好、防潮、气密、遮光和无毒无味等优点，广泛用于食品、饮料、香烟、药品、照相底板、家庭日用品和电器等领域，作为包装材料、电解电容器材料、绝热材料和装潢商标等。Aluminum foil is a thin sheet metal aluminum product. Because of its soft texture, good ductility, moisture-proof, air-tight, light-shielding, non-toxic and tasteless, aluminum foil is widely used in food, beverages, cigarettes, medicines, photographic bottom plates, and household daily necessities. And electrical appliances and other fields, as packaging materials, electrolytic capacitor materials, heat insulation materials and decoration trademarks, etc.
随着生活水平的提高，例如：我国铝箔消费量呈逐年增长趋势，空调箔是制造空调器用热交换器翅片的专用材料，近几年我国空调箔的生产能力和技术水平不断提高，我国是世界上最大的卷烟生产和消费大国，基本都采用香烟箔包装，显然我国铝箔市场还有较大的上升空间，为了适应市场需求，有色涂层铝箔在诸多领域中都充分显示出它广阔的应用前景。With the improvement of living standards, for example, the consumption of aluminum foil in my country is increasing year by year. Air-conditioning foil is a special material for the manufacture of heat exchanger fins for air conditioners. In recent years, the production capacity and technical level of air-conditioning foil in my country have been continuously improved. my country is The world's largest cigarette production and consumption country basically uses cigarette foil packaging. Obviously, my country's aluminum foil market still has a large room for growth. In order to meet market demand, colored coated aluminum foil has fully demonstrated its wide application in many fields. prospect.
随着现代工业高速发展，有色涂层铝箔设备被越来越多的要求在高温、高压、高速、和恶劣工况条件下能够长期、稳定地运转，对设备表面的耐磨和耐蚀性能要求日益增大，因此材料表面保护技术的研发至关重要，为了强化材料表面，保证材料的稳定应用，我们提供了一种耐蚀耐磨有色涂层铝箔的制造方法。With the rapid development of modern industry, colored coated aluminum foil equipment is increasingly required to be able to operate stably for a long time under high temperature, high pressure, high speed, and harsh working conditions, and the wear and corrosion resistance of the equipment surface is required Therefore, the research and development of material surface protection technology is very important. In order to strengthen the material surface and ensure the stable application of the material, we provide a manufacturing method of corrosion-resistant and wear-resistant colored coated aluminum foil.
发明内容Contents of the invention
（一）解决的技术问题(1) Solved technical problems
针对现有技术的不足，本发明提供了一种耐蚀耐磨有色涂层铝箔的制造方法，解决了有色涂层铝箔设备被越来越多的要求在各种工况条件下能够长期、稳定地运转，对设备表面有色涂层铝箔的耐磨和耐蚀性能要求日益增大的问题。Aiming at the deficiencies of the prior art, the present invention provides a method for manufacturing a corrosion-resistant and wear-resistant colored coated aluminum foil, which solves the growing requirement that colored coated aluminum foil equipment can be long-term and stable under various working conditions. The problem of increasing the wear resistance and corrosion resistance of the colored coated aluminum foil on the surface of the equipment.
（二）技术方案(2) Technical solutions
为实现上述目的，本发明提供如下技术方案：一种耐蚀耐磨有色涂层铝箔的制造方法，包括以下步骤：In order to achieve the above object, the present invention provides the following technical solution: a method for manufacturing a corrosion-resistant and wear-resistant colored coated aluminum foil, comprising the following steps:
S1：铝箔材料准备，铝箔工件加工处理包括：脱脂处理—清水清洗—铬化或磷化处理—烘干—紫外线消毒—双涂双烘—冷却。S1: Aluminum foil material preparation, aluminum foil workpiece processing includes: degreasing treatment - clean water cleaning - chromizing or phosphating treatment - drying - ultraviolet disinfection - double coating and double drying - cooling.
S2：涂层材料准备，包括以下重量百分比材料：石墨粉20％-30％、水12％-18％、染色液10％-15％、表面改良剂2％-5％、复合α-陶瓷微粉10％-15％、钇系稀土微粉10％-15％、贝壳粉14％-18％和尼龙粉末10％-20％，搅拌混合处理，调制PH为3。S2: Coating material preparation, including the following materials in weight percentage: graphite powder 20%-30%, water 12%-18%, dyeing solution 10%-15%, surface modifier 2%-5%, composite α-ceramic powder 10%-15%, 10%-15% of yttrium series rare earth micropowder, 14%-18% of shell powder and 10%-20% of nylon powder, stirring and mixing treatment, adjusting pH to 3.
S3：火焰喷涂，将涂层材料加热到熔融状态，在高速气流的推动下形成雾流，喷射到铝箔工件基体上，进一步打磨处理、清洗处理和烘干处理。S3: Flame spraying, heating the coating material to a molten state, forming a mist flow under the impetus of high-speed airflow, spraying it on the aluminum foil workpiece substrate, and further grinding, cleaning and drying treatment.
优选的，在步骤S1中，铝箔工件为双面光铝箔，厚度为0.01mm-0.1mm。Preferably, in step S1, the aluminum foil workpiece is double-sided glossy aluminum foil with a thickness of 0.01mm-0.1mm.
优选的，在步骤S1中，脱脂处理的脱脂剂为机酸、无机酸、氧化剂、缓蚀剂、除油助剂以及表面活性剂的复配溶液，将脱脂剂与清水配成2%-6%的清洗溶液，铝箔工件在清洗溶液内浸泡处理，浸泡时间3-5分钟，脱脂温度50℃左右。Preferably, in step S1, the degreasing agent for degreasing treatment is a compound solution of organic acid, inorganic acid, oxidizing agent, corrosion inhibitor, degreasing aid and surfactant, and the degreasing agent and clear water are formulated into 2%-6 % cleaning solution, the aluminum foil workpiece is soaked in the cleaning solution, the soaking time is 3-5 minutes, and the degreasing temperature is about 50°C.
优选的，在步骤S1中，双涂双烘处理为底涂预处理—烘干—底涂—烘干。Preferably, in step S1, the double-coating and double-baking treatment is primer pretreatment-drying-primer-drying.
优选的，在步骤S1中，底涂预处理为在铝箔工件涂布处理，涂布层为树脂液封闭层，启动风机加热和烘道加热开关，并设定好温度，熟化。Preferably, in step S1, the primer pretreatment is coating on the aluminum foil workpiece, the coating layer is a resin liquid sealing layer, the fan heating and the oven heating switch are turned on, and the temperature is set for aging.
优选的，在步骤S1中，底涂处理的底涂溶剂配置材料包括高分子量聚乙烯亚胺水溶液、水、醇溶液以任意比例稀释，其中醇与水的质量比为100：10或100：100。Preferably, in step S1, the primer solvent configuration material for primer treatment includes high molecular weight polyethyleneimine aqueous solution, water, and alcohol solution diluted in any ratio, wherein the mass ratio of alcohol to water is 100:10 or 100:100 .
优选的，在步骤S1中，醇溶液为甲醇、乙醇或异丙醇的中一种。Preferably, in step S1, the alcohol solution is one of methanol, ethanol or isopropanol.
优选的，在步骤S3中，对铝箔工件双面进行火焰喷涂多层，先涂第一层，厚度可控制在0.01mm-0.02mm，在低温70℃左右或者常温彻底干燥后，继续施工涂抹第二层，第三层。Preferably, in step S3, the aluminum foil workpiece is flame-sprayed with multiple layers on both sides, the first layer is applied first, and the thickness can be controlled at 0.01mm-0.02mm. Second floor, third floor.
（三）有益效果(3) Beneficial effects
本发明提供了一种耐蚀耐磨有色涂层铝箔的制造方法，具备以下有益效果：The invention provides a method for manufacturing a corrosion-resistant and wear-resistant colored coated aluminum foil, which has the following beneficial effects:
本发明通过设置石墨粉、尼龙粉末、贝壳粉以及对铝箔工件双涂双烘处理工艺，低摩擦系数和高化学稳定性能的尼龙材料具有良好的耐化学腐蚀性能和润滑性能，低摩擦系数和高化学稳定性能的石墨材料具有导热、减磨、耐磨和润滑性能，复合材料适应无润滑剂条件下的干摩擦，随着摩擦速度增大，石墨具有导热性能，温度升高有助于尼龙形成润滑膜，从而提高了有色涂层的耐磨耐蚀性能，双涂双烘时涂布树脂液封闭层具有延伸性，有效防护底涂开裂，达到了耐磨耐蚀的目的，解决了有色涂层铝箔设备被越来越多的要求在各种工况条件下能够长期、稳定地运转，对设备表面有色涂层铝箔的耐磨和耐蚀性能要求日益增大的问题。In the present invention, by setting graphite powder, nylon powder, shell powder and double-coating and double-baking process on the aluminum foil workpiece, the nylon material with low friction coefficient and high chemical stability has good chemical corrosion resistance and lubricating performance, low friction coefficient and high The chemically stable graphite material has thermal conductivity, wear reduction, wear resistance and lubrication properties. The composite material is suitable for dry friction without lubricant. With the increase of friction speed, graphite has thermal conductivity, and the temperature rise helps nylon to form Lubricating film, thereby improving the wear resistance and corrosion resistance of colored coatings. During double coating and double drying, the coating resin liquid sealing layer has extensibility, which can effectively prevent cracking of the primer, achieve the purpose of wear resistance and corrosion resistance, and solve the problem of colored coatings. Layered aluminum foil equipment is increasingly required to be able to operate stably for a long time under various working conditions, and the wear and corrosion resistance of the colored coated aluminum foil on the surface of the equipment is increasingly required.
具体实施方式Detailed ways
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
本发明提供一种技术方案：一种耐蚀耐磨有色涂层铝箔的制造方法，包括以下步骤：The invention provides a technical solution: a method for manufacturing a corrosion-resistant and wear-resistant colored coated aluminum foil, comprising the following steps:
S1：铝箔材料准备，铝箔工件加工处理包括：脱脂处理—清水清洗—铬化或磷化处理—烘干—紫外线消毒—双涂双烘—冷却。S1: Aluminum foil material preparation, aluminum foil workpiece processing includes: degreasing treatment - clean water cleaning - chromizing or phosphating treatment - drying - ultraviolet disinfection - double coating and double drying - cooling.
S2：涂层材料准备，包括以下重量百分比材料：石墨粉20％-30％、水12％-18％、染色液10％-15％、表面改良剂2％-5％、复合α-陶瓷微粉10％-15％、钇系稀土微粉10％-15％、贝壳粉14％-18％和尼龙粉末10％-20％，搅拌混合处理，调制PH为3。S2: Coating material preparation, including the following materials in weight percentage: graphite powder 20%-30%, water 12%-18%, dyeing solution 10%-15%, surface modifier 2%-5%, composite α-ceramic powder 10%-15%, 10%-15% of yttrium series rare earth micropowder, 14%-18% of shell powder and 10%-20% of nylon powder, stirring and mixing treatment, adjusting pH to 3.
S3：火焰喷涂，将涂层材料加热到熔融状态，在高速气流的推动下形成雾流，喷射到铝箔工件基体上，进一步打磨处理、清洗处理和烘干处理。S3: Flame spraying, heating the coating material to a molten state, forming a mist flow under the impetus of high-speed airflow, spraying it on the aluminum foil workpiece substrate, and further grinding, cleaning and drying treatment.
作为本发明的一种技术优化方案，在步骤S1中，铝箔工件为双面光铝箔，厚度为0.01mm-0.1mm。As a technical optimization solution of the present invention, in step S1, the aluminum foil workpiece is double-sided glossy aluminum foil with a thickness of 0.01mm-0.1mm.
作为本发明的一种技术优化方案，在步骤S1中，脱脂处理的脱脂剂为机酸、无机酸、氧化剂、缓蚀剂、除油助剂以及表面活性剂的复配溶液，将脱脂剂与清水配成2%-6%的清洗溶液，铝箔工件在清洗溶液内浸泡处理，浸泡时间3-5分钟，脱脂温度50℃左右。As a technical optimization scheme of the present invention, in step S1, the degreasing agent for degreasing treatment is a compound solution of organic acid, inorganic acid, oxidizing agent, corrosion inhibitor, degreasing aid and surfactant, and the degreasing agent and Make a 2%-6% cleaning solution with clean water, and soak the aluminum foil workpiece in the cleaning solution for 3-5 minutes, and the degreasing temperature is about 50°C.
作为本发明的一种技术优化方案，在步骤S1中，双涂双烘处理为底涂预处理—烘干—底涂—烘干。As a technical optimization solution of the present invention, in step S1, the double-coating and double-baking treatment is primer pretreatment-drying-primer-drying.
作为本发明的一种技术优化方案，在步骤S1中，底涂预处理为在铝箔工件涂布处理，涂布层为树脂液封闭层，启动风机加热和烘道加热开关，并设定好温度，熟化。As a technical optimization scheme of the present invention, in step S1, the primer pretreatment is coating on the aluminum foil workpiece, the coating layer is a resin liquid sealing layer, the fan heating and the drying tunnel heating switch are started, and the temperature is set , ripening.
作为本发明的一种技术优化方案，在步骤S1中，底涂处理的底涂溶剂配置材料包括高分子量聚乙烯亚胺水溶液、水、醇溶液以任意比例稀释，其中醇与水的质量比为100：10或100：100。As a kind of technical optimization scheme of the present invention, in step S1, the primer solvent configuration material of primer treatment comprises high molecular weight polyethylenimine aqueous solution, water, alcohol solution to be diluted in any ratio, wherein the mass ratio of alcohol to water is 100:10 or 100:100.
作为本发明的一种技术优化方案，在步骤S1中，醇溶液为甲醇、乙醇或异丙醇的中一种。As a technical optimization solution of the present invention, in step S1, the alcohol solution is one of methanol, ethanol or isopropanol.
作为本发明的一种技术优化方案，在步骤S3中，对铝箔工件双面进行火焰喷涂多层，先涂第一层，厚度可控制在0.01mm-0.02mm，在低温70℃左右或者常温彻底干燥后，继续施工涂抹第二层，第三层。As a technical optimization scheme of the present invention, in step S3, flame spray multi-layers on both sides of the aluminum foil workpiece, first coat the first layer, the thickness can be controlled at 0.01mm-0.02mm, at a low temperature of about 70°C or at room temperature After drying, continue to apply the second layer and the third layer.
实施例一Embodiment one
本发明提供一种技术方案：一种耐蚀耐磨有色涂层铝箔的制造方法，包括以下步骤：The invention provides a technical solution: a method for manufacturing a corrosion-resistant and wear-resistant colored coated aluminum foil, comprising the following steps:
S1：铝箔材料准备，铝箔工件加工处理包括：添加脱脂剂复配溶液浸泡实现脱脂处理—清水加压喷淋清洗—铬化或磷化处理—启动风机加热和烘道加热开关烘干—缓冲间紫外线消毒—双涂双烘—冷却，双烘均为启动风机加热和烘道加热开关烘干，冷却可自然冷却。S1: Aluminum foil material preparation, aluminum foil workpiece processing includes: adding degreasing agent compound solution soaking to achieve degreasing treatment - clear water pressurized spray cleaning - chromizing or phosphating treatment - starting fan heating and drying tunnel heating switch drying - buffer room Ultraviolet disinfection—double coating and double drying—cooling, double drying is to start the fan to heat and the drying channel heating switch to dry, and the cooling can be natural cooling.
S2：涂层材料准备，包括以下重量百分比材料：石墨粉20％、水12％、染色液15％、表面改良剂5％、复合α-陶瓷微粉15％、钇系稀土微粉15％、贝壳粉14％和尼龙粉末20％，搅拌混合处理，调制PH为3，贝壳粉14％呈细致粉末状，无颗粒。S2: Coating material preparation, including the following materials in weight percentage: graphite powder 20%, water 12%, dyeing solution 15%, surface modifier 5%, composite α-ceramic micropowder 15%, yttrium series rare earth micropowder 15%, shell powder 14% and 20% of nylon powder, stirred and mixed to adjust the pH to 3, and 14% of shell powder is fine powder without particles.
S3：火焰喷涂，将涂层材料加热到熔融状态，在高速气流的推动下形成雾流，喷射到铝箔工件基体上，进一步打磨处理、清洗处理和烘干处理。S3: Flame spraying, heating the coating material to a molten state, forming a mist flow under the impetus of high-speed airflow, spraying it on the aluminum foil workpiece substrate, and further grinding, cleaning and drying treatment.
实施例二Embodiment two
本发明提供一种技术方案：一种耐蚀耐磨有色涂层铝箔的制造方法，包括以下步骤：The invention provides a technical solution: a method for manufacturing a corrosion-resistant and wear-resistant colored coated aluminum foil, comprising the following steps:
S1：铝箔材料准备，铝箔工件加工处理包括：添加脱脂剂复配溶液浸泡实现脱脂处理—清水加压喷淋清洗—铬化或磷化处理—启动风机加热和烘道加热开关烘干—缓冲间紫外线消毒—双涂双烘—冷却，双烘均为启动风机加热和烘道加热开关烘干，冷却可自然冷却。S1: Aluminum foil material preparation, aluminum foil workpiece processing includes: adding degreasing agent compound solution soaking to achieve degreasing treatment - clear water pressurized spray cleaning - chromizing or phosphating treatment - starting fan heating and drying tunnel heating switch drying - buffer room Ultraviolet disinfection—double coating and double drying—cooling, double drying is to start the fan to heat and the drying channel heating switch to dry, and the cooling can be natural cooling.
S2：涂层材料准备，包括以下重量百分比材料：石墨粉30％、水12％、染色液15％、表面改良剂5％、复合α-陶瓷微粉15％、钇系稀土微粉15％、贝壳粉14％和尼龙粉末10％，搅拌混合处理，调制PH为3，贝壳粉14％呈细致粉末状，无颗粒。S2: Coating material preparation, including the following materials in weight percentage: graphite powder 30%, water 12%, dyeing solution 15%, surface modifier 5%, composite α-ceramic micropowder 15%, yttrium series rare earth micropowder 15%, shell powder 14% and 10% of nylon powder, stir and mix to adjust the pH to 3, and 14% of shell powder is fine powder without particles.
S3：火焰喷涂，将涂层材料加热到熔融状态，在高速气流的推动下形成雾流，喷射到铝箔工件基体上，进一步打磨处理、清洗处理和烘干处理。S3: Flame spraying, heating the coating material to a molten state, forming a mist flow under the impetus of high-speed airflow, spraying it on the aluminum foil workpiece substrate, and further grinding, cleaning and drying treatment.
作为本发明的一种技术优化方案，在步骤S1中，铝箔工件为双面光铝箔，厚度为0.01mm-0.1mm。As a technical optimization solution of the present invention, in step S1, the aluminum foil workpiece is double-sided glossy aluminum foil with a thickness of 0.01mm-0.1mm.
作为本发明的一种技术优化方案，在步骤S1中，脱脂处理的脱脂剂为机酸、无机酸、氧化剂、缓蚀剂、除油助剂以及表面活性剂的复配溶液，将脱脂剂与清水配成2%-6%的清洗溶液，铝箔工件在清洗溶液内浸泡处理，浸泡时间3-5分钟，脱脂温度50℃左右。As a technical optimization scheme of the present invention, in step S1, the degreasing agent for degreasing treatment is a compound solution of organic acid, inorganic acid, oxidizing agent, corrosion inhibitor, degreasing aid and surfactant, and the degreasing agent and Make a 2%-6% cleaning solution with clean water, and soak the aluminum foil workpiece in the cleaning solution for 3-5 minutes, and the degreasing temperature is about 50°C.
作为本发明的一种技术优化方案，在步骤S1中，双涂双烘处理为底涂预处理—烘干—底涂—烘干。As a technical optimization solution of the present invention, in step S1, the double-coating and double-baking treatment is primer pretreatment-drying-primer-drying.
作为本发明的一种技术优化方案，在步骤S1中，底涂预处理为在铝箔工件涂布处理，涂布层为树脂液封闭层，启动风机加热和烘道加热开关，并设定好温度，熟化。As a technical optimization scheme of the present invention, in step S1, the primer pretreatment is coating on the aluminum foil workpiece, the coating layer is a resin liquid sealing layer, the fan heating and the drying tunnel heating switch are started, and the temperature is set , ripening.
作为本发明的一种技术优化方案，在步骤S1中，底涂处理的底涂溶剂配置材料包括高分子量聚乙烯亚胺水溶液、水、醇溶液以任意比例稀释，其中醇与水的质量比为100：10或100：100。As a kind of technical optimization scheme of the present invention, in step S1, the primer solvent configuration material of primer treatment comprises high molecular weight polyethylenimine aqueous solution, water, alcohol solution to be diluted in any ratio, wherein the mass ratio of alcohol to water is 100:10 or 100:100.
作为本发明的一种技术优化方案，在步骤S1中，醇溶液为甲醇、乙醇或异丙醇的中一种。As a technical optimization solution of the present invention, in step S1, the alcohol solution is one of methanol, ethanol or isopropanol.
作为本发明的一种技术优化方案，在步骤S3中，对铝箔工件双面进行火焰喷涂多层，先涂第一层，厚度可控制在0.01mm-0.02mm，在低温70℃左右或者常温彻底干燥后，继续施工涂抹第二层，第三层，至少为一层，不多于三层。As a technical optimization scheme of the present invention, in step S3, flame spray multi-layers on both sides of the aluminum foil workpiece, first coat the first layer, the thickness can be controlled at 0.01mm-0.02mm, at a low temperature of about 70°C or at room temperature After drying, continue to apply the second layer, the third layer, at least one layer, no more than three layers.
综上可得，本发明通过设置石墨粉、尼龙粉末、贝壳粉以及对铝箔工件双涂双烘处理工艺，解决了有色涂层铝箔设备被越来越多的要求在各种工况条件下能够长期、稳定地运转，对设备表面有色涂层铝箔的耐磨和耐蚀性能要求日益增大的问题。In summary, the present invention solves the increasing requirement of colored coated aluminum foil equipment to be able to be For long-term and stable operation, the wear-resistant and corrosion-resistant performance of the colored coated aluminum foil on the surface of the equipment is increasingly required.
需要说明的是，在本文中，诸如术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。It should be noted that, in this document, terms such as "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements , but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or equipment.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910583744.3ACN110216056A (en) | 2019-07-01 | 2019-07-01 | A kind of manufacturing method of corrosion-proof wear colored coating aluminium foil |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910583744.3ACN110216056A (en) | 2019-07-01 | 2019-07-01 | A kind of manufacturing method of corrosion-proof wear colored coating aluminium foil |
| Publication Number | Publication Date |
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| CN110216056Atrue CN110216056A (en) | 2019-09-10 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910583744.3APendingCN110216056A (en) | 2019-07-01 | 2019-07-01 | A kind of manufacturing method of corrosion-proof wear colored coating aluminium foil |
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| CN (1) | CN110216056A (en) |
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| RJ01 | Rejection of invention patent application after publication | Application publication date:20190910 |