How to distinguish the quality of car film? How to distinguish good from bad car film?

1. Judge by transparency and color.

The transparency of the car heat shield film is the clarity of the inside and outside of the car through the window. The transparency of the better film is relatively high; The transparency of inferior car film is usually not up to standard, and it is not clear to look from the inside to the outside after pasting, and it feels foggy, and the driving vision is blurred and obstructed, and there are great safety hazards.

As for the color of the car heat insulation film, some car films are darker, and for consumers, they can first take a small piece of car film for inspection. Use your fingernail or key to slide on the torn car film, if it fades, it is a fake film. This is due to the fact that the true membrane has an anti-scratch layer that is not easy to fade.

Car owners should also change their understanding of the color of the car film, "the darker the color of the car film, the better the thermal insulation effect" This concept is a misunderstanding, and the color of the car film has nothing to do with the quality.

2. The thermal insulation of the film can be tested.

Usually, there is a light box in the car film shop that simulates the environment of the car where the sun shines, and you can place the film near the light box, and put your hand through the film to intuitively feel the heat insulation effect of the car film. You can also point the film to the sun or iodine-tungsten lamp, and then feel it with your hands.

3. It is very important to choose a regular business.

For car owners, don't lose a lot because of a small one, because you are greedy for cheap and choose unreliable merchants, which will cause endless trouble. In the process of lamination, the dusty outdoor environment should be avoided as much as possible, and the film should be applied in a relatively closed environment. Therefore, it is necessary to choose a manufacturer with professional operation.

And in the process of sticking the film, the whole film is pasted, the purpose is that if the front windshield is broken, the whole car film can exert its explosion-proof property, firmly stick to the broken glass, and will not cause the glass to splash and hurt people. Be sure not to work in blocks and films, which also reflects the professionalism of the merchant's operation.

In general, the authenticity of automotive heat insulation film can be distinguished in many ways.

1.In terms of clarity, regardless of the color of the film, high-quality film should be able to clearly see items 6m away at night, while low-quality film will have a foggy feeling.

2.From the point of view of hand feel, the ** film feels thick and smooth, while the inferior film feels thin and brittle, and is easy to wrinkle.

3.From the color point of view, the pigment of the high-quality film is evenly integrated in the film, which is durable and not easy to change color, and will not be discolored by scraping during the pasting process.

4.From the point of view of thermal insulation, thermal insulation performance is one of the important indicators of glass protective film, which can be compared by a simple test method: put a piece of glass sticking to the car film on an iodine-tungsten lamp, and use it without feeling a trace of heat is a high-quality film.

The inferior film has poor light transmittance, the line of sight is blocked, and there will be a foggy feeling when looking at things, and the high-quality car film is smooth and thick to the touch, while the inferior film is very soft and thin, lacks toughness, and is easy to wrinkle. They can also be distinguished from the color, the high-quality film color gloss is uniform and will not fade, while the inferior film is scraped with a fingernail after tearing off the film, and the color will fall off, and the benzene content in the residual solvent of the inferior film adhesive layer is high, and there is a pungent odor, which will increase after sun exposure.

To put it simply, a film with high light transmittance and obvious thermal insulation effect is a good film, and it is a poor quality film anyway.

Whether the transparency of the film is good, and whether there is air after pasting.

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can consult car problems at any time, 24 hours ** answer.

1. Pay attention to the "three rates" First of all, we should pay attention to the "three rates", that is, light transmittance, ultraviolet resistance rate, and heat insulation rate, to distinguish the quality of the car film. From the inside to the outside, the light transmittance is very clear, and it maintains a good perspective effect at night and in rainy days, regardless of the color depth line of the car film. For a simple judgment of the thermal insulation rate, car owners can use fluorescent lamps in car beauty shops to feel the temperature change after the film.

Take the former's barrier film as an example. The slightly better automotive film has a light transmittance of more than 70%, a UV resistance rate of 98%-19%, and a thermal insulation rate of more than 48%. For the side windows and rear bumper, the light transmittance of the selected car film only needs to be more than 60%.

2. Judge by feelSecondly, judging the quality of the car film can also be judged by the feel. A high-quality membrane that is thick and smooth to the touch and has enough toughness. On the other hand, inferior membranes are prone to wrinkling.

It is also thin and soft. In this regard, Huang Guiyong introduced a little trick. If you can't feel the quality of the film with your hands, the owner can take a small piece of car film and scratch it on the glass.

If the film is easy to leave marks or damage, it means that the film is of poor quality and should not be used. 3. Peel off the car film and smell itIn addition, the car owner can peel off the car film and smell it. Inferior films tend to leave a large amount of benzene in the adhesive line, which has a pungent odor.

If you choose inferior products, it will seriously affect the health of the car owner.

The method of identifying the quality of the car film is as follows: 1. Feel. The inferior film uses ordinary polyester film as the base material, because the internal structure is loose, easy to dye, and the strength is low, so it has no elasticity, lacks toughness, and is easy to detect and wrinkle, and it cannot meet the basic requirements of automobile film safety explosion-proof film.

The high-quality film is made of optical-grade polyester film, which is not only more expensive, but also thick and smooth to the touch, dense in structure and high in strength, so it has high safety performance and excellent explosion-proof performance. , 2. Color. The inferior film is mainly dyed by the dyeing process, so these pigments are attached to the surface of the film, not only the color uniformity and stability are poor, the color difference is serious, and it is easier to fade and become blurred.

The high-quality film is manufactured by magnetron sputtering process, which adsorbs precious and rare space metal atoms such as gold, silver, nickel and titanium through a strong magnetic field, which not only has uniform color and luster, but also naturally has space metal color, high visual clarity and excellent permeability, which is very suitable for automotive front windshield. 3. Anti-scratch. There is no anti-scratch layer on the surface of the inferior film, and it is easy to scratch when the line is not staring at the lifting window or wiping it by hand; If you gently wipe it with alcohol, gasoline, etc. for one minute, the inferior film will fade.

The surface of the high-quality film has a professional anti-scratch layer, which is not only more resistant to scratches and not easy to scratch, but also will not appear decolorization after being gently wiped with alcohol and gasoline.

About discernment.

Distinguish between good and bad membranes!

Color: High-quality films are usually colored by sputtering metal to give the film a color (known as natural color). Natural colors are durable and do not fade easily, while many low-grade and inferior films are mostly colored by the viscose coloring method.

That is to add pigment to the adhesive and then apply it to a colorless transparent film to give the film a color. Consumers look at the outside of the car through this film as if separated by a layer of colored cellophane, which has potential safety hazards, and affects the clarity of vision, and is easy to fade if it is not light-resistant.

1.Glue & Pellet Bubbles:

The adhesive layer of the high-quality film is extremely thin, and the particle bubble is produced by the dust floating in the air, which is inevitable in the process of filming. The adhesive layer of the high-quality film is very thin, so the particle bubbles are more obvious. This is also an important way to distinguish between good and bad diaphragms.

2.Anti-glare:

When driving in the face of sunlight or meeting at night, the high-quality film can effectively filter the sunlight and glare in the high beams of the other party, making the owner more comfortable and safer to drive.

3.Abrasion Resistant Protective Layer:

The surface of the high-quality film has an anti-scratch layer, which can protect the film surface from scratching under normal use, while the low-grade film does not have this protective layer, and even scratches are scratched by tools when the film is applied.

In addition to the light transmittance, the higher the heat insulation rate, the better, the higher the ability to isolate ultraviolet rays, the better, and the lower the radio signal blocking rate, the better.

How to identify inferior membranes?

In such a chaotic market environment, how to identify inferior membranes is particularly important, in fact, the way to identify is simple.

Method 1: You can ask the merchant to cut a small piece of film down, and take a photo on the bright side, the clarity of the film is higher, and the inferior film looks foggy.

Method 2: After tearing off the protective layer, the inferior film smells pungent and has a pungent smell, while the file film has a faint glue smell or basically no taste, which is related to the environmentally friendly glue it uses.

Method: The film is thick and smooth to the touch, while the inferior film is soft, not tough, and easy to wrinkle.

Summary: It is recommended to pick up this kind of film yourself, and you still have to choose those with a better reputation, just like Meiji, 3M, dragon film, but I still prefer Meiji, I have been using it, and finally I still persuade you not to buy inferior car film, it is no different from running naked, and it costs money in vain.

Method 1: Distinguish by feel.

The car film that can achieve the effect of blocking infrared rays must have a metal layer, and the car film containing the metal layer will make a crisp sound when gently rubbed or dusted by hand.

Method 2: Take a photo with a money detector.

When purchasing, consumers can carry a small ultraviolet money detector and place it between the emitted ultraviolet rays and the renminbi. If the watermark on the RMB under the car film is still clearly visible, it means that the sun protection effect of this car film is not good.

Method 3: Soak in banana water.

The scraps of the car film can be soaked in banana water, and the edges of the car film of poor quality will crack into several layers within two or three hours; And a good quality film will not crack if soaked for more than 8 hours. (Banana water, also known as Tianna water, is cheap and can be bought in the building materials market.) )

When sticking the film, it is more time-consuming, because the glass has a curvature, so it is necessary to lay the film on the window to bake and set, which is a more time-consuming link, the better the film, the worse the shape, the front gear and the body at the same time to paste at least 3 hours, and the fake film is easier to bake, and the paste is faster. In other words, the side of the film that is really attached to your car window is smooth, while the side of the fake film is sticky.

This method is not easy to practice, first of all, the beauty shop will prepare some real film leftovers, and finally paste it on the car or fake film, if the real and fake are mixed, it is not easy to distinguish. There are also many fake warranty cards and anti-counterfeiting labels, and car owners who buy them should generally check carefully.