Automotive industry adhesives - hot melt adhesives（1）

Automotive industry adhesives - hot melt adhesives(1)

Hot melt adhesive is the most environmentally friendly type of adhesive currently available and is also suitable for high-speed automatic assembly line operations. Today's automobile industry is developing rapidly, especially in my country. With the improvement of the level of automobile production automation, the automobile industry needs a large number of adhesives that can be quickly bonded and adapted to high-speed automated production and are environmentally friendly. Hot melt adhesive just meets all of the above requirements, so hot melt adhesive is increasingly widely used in the automobile industry, and its usage is increasing year by year. It has become an irreplaceable adhesive type in the automobile industry. The reason for this trend is determined by the characteristics of hot melt adhesive itself.

Hot melt adhesive features:

• 1. The curing speed is fast and it is suitable for modern high-speed assembly line operations.
• 2. There are many bonding materials. Automobiles are mainly composed of a large number of metal and non-metal parts, and hot melt adhesives are suitable for bonding such products. For example, ABS, PP, PE, felt, etc. are widely used in automobiles.
• 3. Hot melt adhesive is easy to apply, and can be applied in many ways, such as spraying, rolling, scraping, etc.
• 4. Hot melt adhesive has a 100% solid content, is easy to store, energy-saving, environmentally friendly, non-toxic, and will not cause secondary pollution to the environment.
• 5. Resources are scarce in today's world. Many automobile companies have considered recycling resources after the cars are scrapped when they are produced. Hot melt adhesive has the characteristic of melting when heated, which has more advantages when recycling and disassembling cars.

Types of hot melt adhesives for automobiles:

Most hot melt adhesives are used in automobiles, but different parts and uses will use different types of hot melt adhesives. According to their functions, they can be divided into two categories: bonding type and sealing type. The sealing type mainly uses butyl adhesives, which will not be discussed here. If divided by use and construction temperature, they can be divided into ordinary type and heat-resistant type. Automobiles are mainly driven outdoors, and hot melt adhesives are generally required to have certain heat resistance. If classified by material, there are EVA, rubber, APAO, PUR, PA, PES, etc., and the shapes are block, film, rod, granule and powder.