Application of hot melt adhesive in automotive industry

A car is made up of thousands of parts, and many parts involve the use of Hot Melt adhesives. Do you know which parts of the car use hot melt adhesives? Let's find out.
Applications in automotive filters
The filter is an important part of the car. The engine has three kinds of air, oil and fuel filters, and the air conditioning filter in the car is generally called "four filters".

They are responsible for the engine intake system, lubrication system, combustion system cooling system intermediate filtration. To extend the life of these parts and protect the health and safety of passengers.

And these 4 filter products will often use adhesive, the main function is to solve the filter in the manufacturing process of bonding, styling, sealing and other aspects of the process needs.

Hot Melt Adhesive is widely used in the filter manufacturing industry because of its environmental protection, safety, temperature resistance, fast curing speed, high production efficiency and simple gluing operation.

Hot Melt Adhesive01 2 Jpg

Applications in automotive interiors

1. Headlights
The traditional method is to use a rubber seal with holes, tightly sealed by screws, and use hot melt adhesive, which can be quickly bonded and play a sealing role, which reduces the cost and is conducive to automated production.

The main types of hot melt adhesive are rubber type and APAO type and PUR type, which require good temperature resistance, high bonding glass strength and vibration resistance. Two-component gels are also available. The license plate lamp also uses a heat-resistant hot-melt Glue Stick to fix the wiring harness and electronic components.

2. Bridge instrument panel, ventilation duct, interior fixing buckle, etc
In the past, mechanical methods were used to fix the connection, which was not only time-consuming and laborious, but also low efficiency and poor sealing performance. After using hot melt adhesive, the production efficiency and product quality are greatly improved.

The main use of heat-resistant Hot Melt Glue rod, substrate EVA and polyolefin types.

3. Car ceiling
The car ceiling is composed of plastic sheets
The type of hot melt adhesive is mainly adhesive film and adhesive powder, and the substrate is PE and EVA.

4. Car door panel
The assembly of automobile door panels requires hot melt adhesive bonding. There are PP parts bonded, audio and wire harness fixed.
Mainly use APAO and temperature resistant glue sticks.

5, car carpet and floor insulation mat, luggage buckle, etc
This is where the car uses the most hot melt adhesive.
The types of hot melt adhesives are glue blocks, colloidal particles and glue sticks. There are pressure sensitive adhesives, EVA pellets, glue sticks and APAO.
It requires long opening time, easy to assemble and fit large pieces, good heat resistance, and less odor.

6, car wiring harness fixed
There are a large number of wires inside the car, so many wiring harnesses can not be fixed with wire tubes like our home decoration, fixing with hot melt adhesive is a time-saving and efficient method, and hot melt adhesive has a certain elasticity, will not fall off in the turbulence of driving, and it is easy to disassemble when it needs maintenance.
Glue sticks and hot melt adhesives of APAO type are mainly used.

Other parts of the application
In addition to the above need to use hot melt glue, there are some accessories, such as batteries, sunshades and so on.