Environmental protection vacuum aluminum plated paper primer

Cup Bao M vacuum coating molybdenum coating bottom coating, Fujian Hong Yang Group Co., Ltd. Chen Shaohong equipment equipment aluminum plating equipment has been widely used in the packaging process, China's market demand is very large. This article mainly introduces the pre-procedure of direct aluminum plating, the type of under-layer coating agent for vacuum aluminum-plating cardboard, and the market conditions at home and abroad.

It is understood that environmentally-friendly water-based chemicals have been widely used in the packaging industry in Europe, America, and other developed countries, and the penetration rate has reached 85%. Basically, it has abandoned traditional products that are contaminated and difficult to degrade, especially in the processing of cigarettes by direct aluminum plating. The method of inserting paper and beer labels has been unanimously recognized and promoted internationally. The pre-procedure for the so-called direct aluminum plating is to coat the surface of the coated paper with a layer of glue or a layer of PE film in order to improve the paper. Surface smoothness, gloss and smoothness make it a more structured and effective coating with aluminum powder. Paper aluminum is an important means for the modern production of composite materials. With paper as the substrate for aluminum plating, its surface state has an important influence on aluminum plating. When aluminum films are directly deposited on the surface of paper, the paper must be pre-coated to make the paper surface Smoothness ensures high metallic luster coating. Therefore, the quality of the coating agent and the thickness of the coating directly affect the gloss of the coated paper.

At present, there are mainly two kinds of primers for vacuum aluminum-plated paper: solvent-based coating agents. Such coating agents use organic solvents as diluents. After coating with solvent-based coating, the brightness of the metal film is better after the vacuum metallization, but the requirement for the coating machine is high. If there is no solvent recovery equipment, it will cause great pollution to the environment and damage the operator. Health.

Aqueous coating agent. Such water-based coating agents do not require a high level of coating machines, but there are a series of technical differences such as low brightness and poor heat resistance of the coating film, and this is currently the area with the greatest potential for development.

UV and EBC Coating Agents UV light and electron beam curing coating agents. The gloss is best after vacuum aluminum plating, but it is expensive. The domestic vacuum aluminum coating agents are mainly based on organic solvents. The few aqueous coating agents are limited to dry polyvinyl alcohol (PVA), amino resin and polyacrylate blends. Their coating luster is not good, the heat resistance is not good, can't replace the solvent type primer agent in a large area, can't reach the effect of compound aluminum plating film even more. Due to the lack of efficient and environmentally friendly primers, high-quality direct aluminum plating on the market is rarely able to meet the ever-evolving process requirements.

According to statistics, the total value of tobacco and alcohol consumed in China is more than 7,000 billion yuan, and the demand for this portion alone amounts to 4,500 tons. In fact, Jinji Card Paper has a wider range of market use, especially in the high-end packaging fields such as cigarettes, wine, and gift boxes. According to current forecasts, the total market demand is about 10,000 tons. According to the regulations of relevant state departments, in 2003 China's cigarette packaging completely disabled composite aluminum film. Therefore, the market prospects for waterborne vacuum aluminum plating products are promising.

The successful development of the environment-friendly vacuum aluminum-plated paper-coating primer product series of Fujian Hongyang Group Co., Ltd. has changed the structure of traditional products to a great extent, and can completely replace the existing PE filming process. The process is a coating process. Water is used as a solvent, and toxic substances are completely abandoned as a solvent, which will not cause damage and pollution to operators and the surrounding environment. The technical problem is solved that the water-based primer agent has poor heat resistance, uneven paper absorption, and low brightness. The aluminum-coated base paper coated with the film has a smooth surface and good moisture resistance, the luster of the coated aluminum film is uniform and firm (without powder removal), and the metallic feeling is realistic, and a satisfactory effect can be obtained. As a new type of water-based environmental protection vacuum aluminum-plating paper-based primer, dry and rational molecular design and modification have successfully solved many high-tech problems of water as a solvent. The coated paper can be degraded and recycled. Recycling, in line with international environmental packaging ISOMOOO requirements, has important practical significance for the development of the packaging industry. '

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