Hot melt adhesive mesh classification and application: a must read for beginners
TPU hot melt adhesive TPU hot melt adhesive, also known as TPU hot melt double-sided adhesive, is mainly composed of polyurethane. TPU hot melt adhesive has good elasticity and excellent water washing resistance, making it a very popular type of hot melt adhesive. Improving peel strength and adhesion can enhance polarity of adhesive resin G-31. TPU hot melt adhesive has three types: high temperature and high elasticity, medium temperature elasticity, and low temperature non elasticity. Among them, the high temperature and high elasticity type TPU hot melt adhesive film has a transparent color and excellent elasticity, mainly used in various seamless underwear fields; Medium temperature type has transparent color and elasticity; The low-temperature type has a white matte surface and no elasticity. TPU hot melt adhesive film can be applied to various clothing, shoes and hats, daily necessities, industrial products and other purposes, and has good adhesion to various materials such as textiles, leather, film, sponge, rubber, etc.
PES hot melt adhesive The main component of PES hot melt adhesive film is copolyester, which has good water washing resistance. The color is white mist, without elasticity, and the melting point is about 110 ℃ -120 ℃. It belongs to medium temperature hot melt adhesive film. PES hot melt adhesive film can be widely used for bonding in various fields such as clothing, daily necessities, and environmental water treatment. It has good adhesion to materials such as polyester fabric, PET film, rubber, sponge, and metal, and is second only to TPU hot melt adhesive film in sales.
PA hot melt adhesive The main component of PA hot melt adhesive film is copolyamide, which has good viscosity and stability, transparent color, no elasticity, high melting point, and good dry cleaning resistance. PA hot melt adhesive film has a limited application range and is expensive, mainly used for bonding materials in various fields such as electronic products and PI films.
PO hot melt adhesive The main component of PO hot melt adhesive film is polyolefin, which has good water washing resistance, transparent and non elastic color. It is mainly used in the clothing industry, especially in the adhesion of clothing trademark logos, with low cost. The density of PO hot melt adhesive film is very low, only about 0.83, which means that the weight per 0.01mm thickness is 8.3 grams, which is much lighter compared to TPU hot melt adhesive film with a weight of 12 grams per 0.01mm. This is also one of the important reasons why PO is cheap. Many people confuse PO and EAA materials, but in fact, there are fundamental differences in their composition and usage areas.
EVA hot melt adhesive The main component of EVA hot melt adhesive film is vinyl acetate copolymer, which is an elastic material with a low melting point but poor water resistance. It is not suitable for use in areas with washing requirements and can be used for bonding in wallpaper, home textiles, building materials, and other fields. It has good adhesion to materials such as polypropylene (PP), wood paper, EVA foam, and various sponges.
