Hot Melt Applicator in Automotive Industry

It has been more than 50 years since the application of adhesives and bonding technology in the automotive industry. In recent years, due to the increasingly higher requirements for the use and commercial properties of automobiles, the materials used in automobile production are increasingly diversified, bonded and sealed. Has become an indispensable process, adhesives become the necessary materials for automobile production, and bonding technology has also become one of the important technologies in automobile manufacturing.

As an adhesive for automobiles, besides satisfying the requirements for the service life of automobiles, it must also have the processability of large-scale flow-through production adapted to this, not only having suitable physical and chemical properties, but also having good construction performance, including storage. Stability and transportation safety, on the one hand, hot-melt adhesives have certain advantages, which have been applied in the automotive industry. Mainly used for car roof bonding (including PVC roofing seams, roof linings, roof insulation blankets bonding, roof arched reinforcement beams and ceiling bonding, etc.), automotive interior and exterior decoration Bonding, welding and sealing of automobile body panels, etc. are mainly based on polyester and polyamide hot melt adhesives.

A car consists of tens of thousands of parts. In foreign countries, a car uses about 4KG of hot melt adhesive. The specific components used are described below.

1, the traditional method of the headlight headlamp is to use the rubber seal with holes, through the screw compression seal, after changing to hot melt adhesive, can quickly bond the seal, which reduces costs and is conducive to automated production, and Better sealing.

2, seats in the past the seat production is the use of curling, snaps and other mechanical methods to secure the seat cushion and the frame, and now with hot melt adhesive, not only can reduce the occurrence of dislocation, but also can be semi-automatic Production greatly reduces production costs.

3, dashboard ventilation duct car dashboard and cardboard parts bonded to form a cavity ventilation duct, in the past is connected with large staples, not only a waste of man-hours, but also a bad seal, the use of hot-melt adhesives, improve production efficiency and Guaranteed quality.

4, passenger car accelerator pedal accelerator pedal is made of polypropylene material, taking into account the wear resistance, in the middle groove to be bonded to a polyformaldehyde disc, this wafer is a difficult-to-stick material, only the use of hot melt adhesive Bonding.

5, The engine intake pipe of the engine intake pipe is made of aluminum alloy. The manufacturing uses foamed polystyrene lost foam. Because of the hollow structure, the two parts must be glued into a whole. This process requires within several tens of seconds. Finished, and the adhesive should disappear with the polystyrene foam at the aluminum water temperature, and EVA/vinegar-based hot melt adhesives are particularly desirable.