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[Chemical Knowledge]：What is dry glue? The role and classification of dry glue

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Dry glue, as a widely used adhesive and sealant, is a kind of adhesive without solvent, no viscosity and plasticity. It is through chemical reaction or thermal curing to achieve bonding, with simple, environmental protection, energy saving and so on. Dry glue is widely used in machinery, electronics, medical, automotive, construction, health and other industries, and can be seen everywhere in our daily lives, such as carton sealing, envelope sealing, labeling, etc. The role of

dry glue can be divided into two types. One is adhesive, which is used to fix items or connect two items. It has the advantages of water resistance, oil resistance, high temperature, mildew resistance, and non-toxic. It can be described as advancing with the times. Another role of dry glue is sealant, which is divided into vulcanization molding (vulcanization type) and polymer molding (latex type). It can seal some intermittent arterial permanent gas tank and liquid level, and can also seal hatch and ship structure, etc., which is related to the sealing protection of food industry and medical equipment production.

According to the function and physical properties of dry glue, the classification of dry glue is also divided into many kinds. Common categories are thermosetting dry glue, UV curing dry glue, pressure sensitive adhesive, water-based dry glue, hot melt adhesive and so on. All kinds of dry glue have different uses in different fields.

thermosetting dry glue is a glue that uses thermal energy catalytic technology to crosslink and cure substances. It has the characteristics of high strength and high temperature and high efficiency, but it has high hardness and requires curing time and temperature.

ultraviolet curing dry adhesive has the advantages of fast curing speed, cost-effective, easy to use, easy to deploy, fast curing speed, large coating thickness, etc., and is widely used in processing plants and printing plants.

pressure-sensitive adhesives are characterized by excellent adhesion and good cold resistance, are suitable for bonding between various materials, and can be processed into coils or sheets. In the automotive, furniture, packaging, electronics and other fields have a wide range of applications.

water-based dry adhesive has the characteristics of easy processing and fixation, non-toxic, non-polluting, low temperature and temperature resistance, and is mainly used in food, medical equipment, stationery, motorcycles and other industries. One of the reasons why

hot melts are more popular is due to their ease of use. The adhesive can be heated by electric heating and other means, and applied in a softened state to the location where the material is needed. Hot melt adhesives can be cut to configurable sizes and shapes. Hot melt adhesives are often used in garment manufacturers and other industries.

as we often encounter in life, whether it is manufacturing, construction or ordinary people's livelihood, dry glue is very common. Choose to use different types of dry glue for different types of items, on the basis of ensuring relevant needs, maximize cost and time savings, and further improve efficiency.

conclusion:

dry adhesive has a wide range of applications, involving all walks of life. In different fields and different needs, the type and performance of dry glue are constantly improving and perfecting. Understanding the functions and differences of various dry glue types, selecting and using suitable dry glue can not only improve work efficiency, reduce resource waste, but also ensure the high quality and long-term stability of work results.