Hot melt adhesive is a mixture of basic polymers, tackifying resins (tackifiers), waxes and antioxidants. In order to improve its adhesiveness, fluidity, heat resistance, cold resistance and toughness, etc. , a certain amount of plasticizers, fillers and other low molecular polymers can also be added appropriately.
The development of the hot melt adhesive industry is synchronized with the development of the hot melt adhesive coating tools and coating equipment industries. The two promote each other, cooperate with each other, and develop together. Without the innovative development of the hot melt adhesive industry, there would be no development of the hot melt adhesive tools and gluing equipment industry. Similarly, without the innovative development of the hot melt adhesive coating tools and gluing equipment industry, there would be no development of the hot melt adhesive industry. Rapid development.
With the increase in labor costs and the rapid development of automated production, as well as the development of the Internet, Internet of Things, robots, and 5G technology, more and more automated production lines have replaced manual operations. Hot melt adhesive is widely used because of its rapid curing characteristics. In sanitary products, medical supplies, label tapes, printing and binding, food packaging, woodworking and home furnishing, beverage packaging, beer packaging, automotive interiors, electronic appliances, shoemaking and other industries. At this time, hot melt glue coating equipment developed rapidly. Hot melt glue coating machines became part of automated packaging production lines, book binding production lines, diaper production lines, beer beverage automatic production lines, automobile production lines, mobile phone production lines, etc., and were responsible for precision in the production lines. Gluing plays a key role.
1. Manual glue application tools:
In the production of light industrial products and DIY assembly, many bonding cannot be achieved in an automated way. In the early days of China's reform and opening up, the manufacturing industry was underdeveloped and the degree of automation of production and manufacturing processes was not high. Manual glue application methods such as hot melt glue guns and hot melt glue furnaces were widely used in Christmas toys, craft flowers, ceramic dolls, telephones, speakers, etc. It is widely used in the manufacturing of packaging, carton sealing and other products. Practical application needs require that the glue gun does not drip glue, does not pour glue, and heats up quickly when used. The glue furnace requires temperature control, precise and adjustable temperature, no atomization, etc. These problems have now been well solved.
2. Classification of hot melt adhesive coating equipment:
Hot melt pressure-sensitive adhesive coating equipment has many classification methods based on different factors. Commonly used classification methods include the following:
(1) According to the production scale, hot melt pressure-sensitive adhesive coating equipment can be divided into experimental equipment, small glue coating equipment, medium glue coating equipment and large glue coating equipment.
(2) According to the relationship between equipment and production lines, coating equipment can be divided into offline equipment and online equipment according to whether it is on a production line.
(3) According to the coating process, hot melt pressure-sensitive adhesive coating equipment can be divided into roller coating equipment, (pattern) roller coating equipment, spray coating equipment, slit coating equipment, extrusion coating equipment and Screen coating equipment.
(4) According to the structure of the equipment, it can be divided into single-arm equipment and double-bracket equipment according to the characteristics of the equipment structure.
(5) According to the products of the production line, hot melt adhesive equipment can be divided into glue coating equipment for beer and beverage automatic packaging production lines, glue coating equipment for various carton packaging production lines, glue coating equipment for PET transparent box production lines, and glue coating equipment for sanitary napkin production lines. Diaper production line gluing equipment, sanitary pad production line gluing equipment, label material gluing production line gluing equipment, book binding production line gluing equipment, composite material production line gluing equipment, shoe hot melt glue equipment, handbag production line gluing equipment, Leather box manufacturing and gluing equipment, etc.
(6) According to the type of hot melt adhesive, there are EVA hot melt glue coating equipment, SBC hot melt glue coating equipment, PUR hot melt glue coating equipment, and PA hot melt glue coating equipment. etc.
The working principle of the hot melt adhesive coating machine is actually very simple. Even if we do not have professional knowledge in this industry, we can easily master it as long as we understand a little knowledge of physical chemistry and other aspects. In fact, to put it simply, it means thermal expansion and contraction. Although the principle used is not very complicated, the convenience brought to some of our daily life and production work after the emergence of the technology is indeed huge. One of the major features is that drying equipment is omitted, which not only saves redundant procedures, but also saves time. By eliminating the cost of equipment such as dryers, this can be said to be killing two birds with one stone. Another big advantage is low energy consumption and the melting point of hot melt adhesive is not very high. Has a fixed and rapid conversion into liquid. Moreover, solid hot melt adhesive is relatively convenient to transport and store at ordinary times. These processes can be said to have incomparable advantages compared with the previous ones. It is because of these many advantages that hot melt machines have been continuously favored by the market since their advent.
Since the advent of hot melt adhesive coating machine technology, it has become popular in the market with its green and environmentally friendly concept. The widespread application of hot melt adhesive technology plays a big role in our energy conservation and environmental protection. Therefore, our national government is also vigorously supporting this industry, opening up a lot of opportunities for the industrial development of hot melt adhesive coating machines. the way.
Maintaining a stable amount of hot melt adhesive coating, balancing the curing time of the hot melt adhesive with the speed of the production line, and accurately controlling the temperature of the equipment are the keys to hot melt adhesive coating equipment. The speed of production lines is getting faster and faster, and consumers have higher and higher requirements for quality, which poses challenges to hot melt adhesive coating equipment manufacturers. Only by closely cooperating with hot melt adhesive manufacturers and understanding the characteristics of hot melt adhesive can hot melt adhesive coating equipment manufacturers better develop hot melt adhesive coating equipment suitable for future high-speed and refined production lines. In the future, hot melt adhesive coating equipment will play an important role in the production lines of various light industrial supplies. The demand will also grow rapidly, and the market prospects are promising!
The working principles of hot melt adhesive coating machines and other hot melt adhesive machines are similar. They all have a heater. During the heating process, due to the different conductivity of heat, during use, the glue displayed on the thermometer will The temperature may have a certain error from the actual temperature. During use, we cannot judge the temperature based on one time. It is best to measure the temperature multiple times within a certain time interval. In this case, the measured temperature will be more accurate. , you can call ours the temperature side more accurately, which makes it more convenient to use.
At present, my country's hot melt adhesive technology is mainly used in hot melt adhesive machines, hot melt adhesive gluing machines, hot melt adhesive gluing machines, hot melt adhesive dispensing machines, hot melt adhesive coating machines, and hot melt adhesive coating machines. Hot melt glue spraying machines and other traditional processes. I believe that in the near future, the technology of our hot melt adhesive coating machine can be improved to a higher level and we can compete for more markets in the high-end industry.
Nanjing Sumino Seiko Machinery Co., Ltd. specializes in the production of release paper coating machines. The company is committed to creating a coating machine production line with uniform coating, high flatness and high cleanliness. The company's main coating machine production lines include release paper coating machines, optical film coating machines, automotive insulation film coating machines, water treatment film coating machines, aluminum foil coating machines, dimmable glass coating machines, and film coating machines. cloth machine, PDLC dimming film coating machine, lithium battery extrusion coating machine, laboratory lithium battery coating machine, etc.
