[China Glass Network] With the emergence of a large number of OEM products, inferior heat insulation film is full of the entire market. The surface reason is that the owner does not understand professional knowledge and it is difficult to study it. In fact, the deeper reason is that the owners did not recognize the harm of poor quality insulation film. Most car owners may think that even if they accidentally bought inferior goods, it would be a big loss to lose some money. In fact, the inferior Shenzhen insulation film implies many ills. Let's talk about its harm.
First, the clarity is reduced, and the traffic safety is jeopardized. The traffic safety regulations of the Ministry of Public Security clearly stipulate that the light transmittance of the front windshield must be greater than 70%. Frankly speaking, the film has some influence on the front windshield line of sight, but the degree of influence of the high quality film is inferior to that of the inferior film. High-quality membranes will strictly enforce the standard of light transmission, try to reduce the impact to a low level and neglect it, and one of the hidden dangers of inferior membrane is that the transmittance does not meet the standard. This is why some cars feel blurred after the film is applied, especially during rainy nights.
Second, residual volatile substances, one of the harmful membranes that harm human health is a dyed film. I believe many of my friends have seen the dye and smelled the smell of the dye. The chemical coatings in these stain layers will cause pollution inside the car and damage human health.
Third, the chemical glue layer absorbs heat, causing a hidden danger of glass. There was once a film sold in Guangdong, but it has almost disappeared. I heard that it was a boycott of dealers because of quality problems. One of the main problems is that The film is easy to cause the glass to burst. At that time, someone had done such a test, and the sample was baked under the lamp. It was found that the film was quickly warped and deformed, and then the test was performed, and the effect was not as good as before. This is a typical endothermic film. Its characteristics are as follows: First, the chemical coating agent changes after heating, so that the original efficiency is gradually lost. Second, the absorption of heat makes the glass temperature too high, and the long-term thermal expansion and contraction eventually leads to The glass burst.
Fourth, pay attention to the purchase points, the correct choice of products The following performance indicators are the key to purchase: heat insulation rate on the market, the thermal insulation rate of the explosion-proof membrane is between 40% and 70%, the insulation rate is more than 80% The solar film does not exist. UV blocking rate Generally, the UV blocking rate of the explosion-proof membrane is only 40%, and the high-quality insulation explosion-proof membrane can be as high as 99% because of its deep-filled UV absorber. Visible light transmittance The visible light transmittance of the heat-insulating and explosion-proof membrane on the market is between 50% and 75%. The relevant regulations stipulate that the light transmittance of the front windshield must reach 70%. Therefore, consumers should pay attention to the penetration of the front film. The light rate must also be above 70%. The visible light reflectance of the visible light reflectance of the visible light can reflect more heat. Generally, the reflectivity of the front film should not exceed 10%, otherwise it may affect the safety of driving.
Note: Do not look for cheap film and find some roadside shops. The working environment of the store is poor. In the open air environment, the dust in the film air will seriously affect the quality of the film. A film maker that does not have brand certification, construction standards, and quality assurance system cannot win the trust of the owner. How to choose a professional film service must have the following four conditions:
1. Professional certification or authorization of the brand company. Brand membranes have strict specifications from product to construction to after-sales.
2. Must have a qualified closed film shop.
3. Construction service personnel must undergo brand professional technical training and be certified.
4. Can provide the original warranty card. The film service provider will provide a three-way original warranty card after the film is applied. The quality film has a long warranty period of 5 to 7 years.
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