Casein Glue: "Rising Star" for Beer Brand Adhesives

With the development of the domestic beer industry, its packaging quality and production speed have been continuously improved. The conventional trademark adhesives have poor water resistance and are not suitable for storage in freezers. In particular, when aluminum vapor deposition paper and metal foil are used as labels, there is no water resistance. In addition, the domestic beer production line from the original 20,000 bottles / hour, now increased to 30,000 - 40,000 bottles / hour, while at the same time have used aluminum foil or tin foil as a sealing standard, which is the popular "Golden beer" packaging. The foreign production line has reached the speed of 40,000-60,000 bottles per hour. This requires the label adhesive to have good initial viscosity and high-speed workability. The common trademark glue cannot adapt to the requirements of high-speed production. Therefore, domestic and foreign beer manufacturers gradually shift to the use of casein series. Adhesives. Casein series adhesives are a kind of adhesive with good initial adhesion, water resistance and alkali detergency. Due to the high price of domestic casein and the lack of related production technology, domestic 40,000 Bottles/hours of beer production lines and manufacturers of metal foil label adhesives are mostly dependent on imports, which is about 20,000 yuan per ton.

Researchers based on the domestic market situation, combined with foreign existing technology, developed a low viscosity, high quality and water-resistant trademark adhesive with the same quality as foreign products, and its physical and chemical indicators are in line with the performance requirements of similar foreign products. The product is non-toxic, non-corrosive to the equipment and operators; the product has strong initial adhesion, fast drying, and no shifting of the label when it is processed on the assembly line; the label is not peeled off after the pressure is applied and the adhesive does not warp; Stable viscosity, good fluidity, antifreeze; product paste is very strong, no drawing in the run, rejection of the standard, off the standard phenomenon; product stickers do not absorb moisture, no mildew, water is not wet off the label, cold water immersion, Hot water is easy to remove.

Product performance indicators are as follows: Viscosity: 40-100Pa.S (30°C); Solid content> 40%; PH value 7-9; Curing time: Fiber tear after 30 seconds; Ice water resistance: Pass 15 days Blister test (5 °C); resistance to normal temperature water: more than 5 days; alkaline washability: 3 minutes off the label; storage period: more than six months.