What are the general quality problems of release film? -Film supplier
I would like to know what quality problems the release film will have. We know that as a manufacturing industry, it is inevitable to encounter quality problems. The most important thing is to understand the problem and solve the problem. We can better control the quality of the release film only after we know what quality problems will occur in the release film. What are the general quality problems of the release film? Let's share with you Zhonglian. 1. Scratch on the film surface of the release film The quality problem of the scratch on the film surface of the release film is manifested by scratches on the flat surface of the film, forming a fine groove line, and a bright line can be observed through reflection. Film scratches can be divided into large-area scratches and intermittent scratches. 1. There are three reasons for large-scale scratches: ①It may be that the guide roller does not rotate. ②The speed is slow when the tension is too small. ③Unidentified objects directly contact the film surface (such as: the corrector falling, etc.) 2. There are two reasons for the intermittent scratches: ①The oven belt is aging and damaged. ②There is foreign matter on the guide roller. 2. Dirty film surface of the release film There are rubber particles and foreign objects on the surface of the film material, which can be wiped off. The quality of the release film can be checked and analyzed from the following aspects: the guide roller or pressure roller is dirty and not clean; the filter in the oven is not clean; the workshop 5S is not done well. 3. The uneven winding of the release film The uneven winding of the release film is manifested by the unevenness of the rear end of the winding, and the protruding end surface is generally ≤5mm. The quality problems of uneven winding of release film generally have the following reasons: correction failure; insufficient or no inflation in the tube; bad paper tube (deviation or imprinting during winding); unbalanced finale or unstable pressure of finale ; The guide roller is not level; the winding tension is too small, etc. 4. White mist on the film surface of the release film The film surface of the release film shows white cloud-like spots. The quality problems of white mist on the surface of the release film are generally due to the following reasons: the main agent or solvent is contaminated; the humidity of the coating head is too high; the product is discharged from the oven and the hot air is discharged to produce water vapor. 5. White spots on the film surface of the release film There are white particles on the film surface of the release film, which are not erasable. The white spots on the surface of the release film are caused by the rubber particles produced by the coating head glue tank that is too long and not cleaned in time; the oven and the guide roller are not cleaned; the inlet and outlet direction of the filter rod is wrong; the solvent comes with foreign matter (solvent When using filter cloth). Sixth, the release film appears rainbow lines, optical refraction and reflection appear colorful colors. There are two reasons for the rainbow pattern of the release film: the original film has a slight rainbow pattern; the product formula ratio is not appropriate. Founded in 2010. Located in the economically active and vigorous Dongguan City, in the Shangqiao Industrial Zone, Dongcheng District, Dongguan City, with a superior geographical location, convenient transportation and extensive connections, it is a comprehensive emerging electronic materials company integrating industry and trade. The company mainly sells DuPont polyester film, and undertakes polyester film related die-cutting, coating, gluing and other processing services. Now it has become one of the largest agents of DuPont in South China and East China.