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Those hot melt adhesives applied to automobile industry

  • Author:Bob
  • Source:www.tdhotmeltglue.com
  • Release on :2018-09-27

As an environmentally-friendly adhesive, hot melt adhesive is widely used in automotive roofing, automotive door panels, automotive carpets, automotive wiring harnesses, tire protection, automotive labels, automotive filters, automotive lights, bridge dashboards and other components.

tongsde [automotive hot melt glue solutions


1. Bonding PVC canopy to insulation layer, etc.
In the past, solvent-based adhesives were mostly used a lot. The solvent glue is made by dissolving chloroprene rubber, nitrile rubber, styrene-butadiene rubber and a tackifying resin in a solvent, and the solvent is ventilated and dried in a bonding process, which is bad environmentally friendly and has physical damage to the operation. In recent years, the use of hot melt adhesive film, adhesive powder, pressure sensitive hot melt adhesive tend to replace the original bonding process, greatly improving the working environment, meeting the VOC and automotive interior environmental standards.
Regarding to combination of car roofs and other thermal and anti-sounding layers of the body, now more and more manufacturers use hot melt adhesives, usually synthetic rubber type hot melt pressure sensitive adhesives. This type of hot melt adhesive has good low temperature resistance, low odor, low VOC, fast curing, environmental protection, no toxicity, no volatile substances, requires coating equipment, able to quantitative coating, suitable for process Requirements, suitable for automatic production.


2. Bonding decorative parts of automobiles
Most automotive interior parts are non-metallic materials such as PVC, ABS film, foam sheet, carpet and wood grain decorative board. The decorative parts with less stress are now generally bonded by hot melt adhesive. When the plastic sheets wrap the edges and the edges of the decorative, they are also bonded by hot melt adhesive.


3. Welding seal of automobile body cover
When the body is sealed, the whole vehicle is in the rear stage of installation, and the construction quality requirements are high, especially for some parts outside the body. The glue are required to be as small and smooth as possible to ensure the appearance of the body. Hot melt adhesives are now applied instead of two-component rubber adhesives, which are usually polyolefin or PUR hot melt adhesives.


4.The application of automotive wiring harness
The electrical control lines of the car are composed of various wiring harnesses, and the binding and fixing of the wire harness are carried out by using a wire harness tape. The utility model has the advantages of flame retardancy, strong adhesion, aging resistance, high temperature resistance and certain low temperature conditions for the wire harness tape, no lifting phenomenon after the binding, and the tape unwinding force is suitable for the automobile production process requirements. The most widely used type of hot melt adhesive is the synthetic rubber type hot melt pressure sensitive adhesive.


5. Foamable hot melt pressure sensitive adhesive for waterproofing PP film and foam board of automobile door panel
Waterproof PP film or foam board is used inside the door panel of each car. PP film or foam board can prevent water from entering the interior of the car during rain or car wash, causing parts to rust. Traditionally, automotive assembly plants have used butyl rubber-based sealing strips to bond PP films or foam boards to the body. In recent years, hot melt pressure sensitive adhesives have been widely used in this field. Because SBC-based hot melt pressure sensitive adhesives are more flexible than butyl rubber based sealants, they can be easily removed from the surface of the car body during repairs in the aftermarket. It can also achieve the purpose of waterproofing.


6. Bonding automobile door panel and rubber sealing strip
A considerable part of this type of bonding is automated robotic operation, which is bonded with hot glue. This bonding requirement emphasizes whether the hot melt adhesive maintains adhesion at -40 degrees and 108 degrees, and the bond strength is concerned with the adhesive strength 24 hours after bonding. Different manufacturers have different standards, but they all simulate the application of the car in the real world.


7, car tire protection glue
Traffic accidents that occur because of car tire punctures occur every day, and timid female drivers are even more afraid of car punctures. In recent years, the automotive beauty market in the market has provided a service to apply rubber to the tires of the car. It is called explosion-proof rubber. It can be used on the spot to test the rubber-coated tires on the nails. The puncture leaked. This kind of glue is a kind of hot melt adhesive. There are several domestic products that can be supplied in China. It was imported a few years ago and the price is not cheap.


8, hot melt adhesive for automotive filters
Today's cars vary greatly in size and variety, and the power system can be gasoline, diesel, liquefied gas, battery, etc. The filters used are also different. A car usually requires 4 filters: engine air filter, air conditioner filter, gasoline filter, oil filter, filter are consumables. Usually, the car filter needs to be replaced once every 5,000 kilometers. In the manufacture of filters, bonding is required in many places, and most of these bonds are realized by hot melt adhesive. However, the adhesive used in the filter is also different. The filter for gasoline and gasoline is mostly PA polyamide hot melt adhesive, while the air filter is mostly EVA hot melt adhesive, PA hot melt adhesive, PO hot melt adhesive, various Type of hot melt adhesive.


Different car manufacturers have different bonding requirements, and their concerns are different, but the basic content is the same, that is, to simulate the environment that the car may face in actual use. Anti-high temperature requirements and low temperature resistance requirements are the most critical requirements. The car will face changes in spring, summer, autumn and winter. It needs to withstand the high temperature exposure in summer, and also withstand the cold winter, and it will face the hot and humid weather in the south. Also will withstand the dry and hot weather in the north and so on.


As people pay more and more attention to the quality of the indoor environment of the car, there is no irritating odor in the car, and the air is fresh. The hot melt adhesive will be widely used in the bonding of various parts of the automobile interior instead of the solvent-based adhesive. The application of hot melt adhesive in the automotive industry is very small. The hot melt adhesive for a car is about 4 kg, but its overall quality effect to the whole car is very large. It may be because of the hot melt adhesive bonding, air quality in the car is improved, and the high-end quality of the car is approved. It is important to understand the bonding principle of hot melt pressure sensitive adhesive and to correctly grasp the internal structure of hot melt pressure sensitive adhesive. It is important for selecting suitable hot melt adhesive products.


Tongde New Material Technology Co., Ltd is dedicated to the development of hot melt adhesives who is focusing on automotive filter hot melt adhesive solutions for many years, with many domestic and foreign automotive OEMs, with rich filter manufacturing experience and mature hot melt adhesive solutions, welcome to inquire us, thank you~

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