The zipper bag is easy to break down. In this paper, the ten faults of the zipper bag are analyzed in detail.
The bag bends
1. The balance of film tension and chain belt tension is not good. (1) The tension of adjusting roller is too weak. (2) The zipper is too tight. (3) The zipper doesn't slide well. (4) The slot of the zipper panel is too narrow. (5) The slide of the zipper panel is not good. (6) The film sliding at the inclined plate / M plate is not good. 2. The temperature of zipper heat seal is too high. 3. The tension of rubber roller under zipper is poor.
Local heat sealing of zipper belt is poor. 1. Foreign matters (polyethylene residue and dust) are mixed in the heat sealing plate of zipper. 2. The Teflon surface installed on the zipper frame is damaged or there are foreign matters. 3. The Teflon surface of the zipper plate is damaged or there are foreign matters. 4. The zipper plate is partially damaged or deformed.
Either end of the heat sealing part of the zipper belt is not sealed or the heat sealing strength is very weak. 1. 2. The position of the zipper heat sealing plate is not aligned with the belt.
The heat sealing temperature of zipper is too high. 2. The position of the heat seal of the zipper is offset and the matching part is pressed. 3. The waiting time is too long and affected by preheating.
The position of the zipper plate is too low, the film on the lower side is heat sealed with the lower side, and the cooling plate has friction. Or affected by the preheating of the lower heat seal. 2. The rubber roller on the lower side of the zipper does not clamp the film well, which makes the film slip. 3. The position of the upper release roller of the lower rubber roller of the zipper is not set well. 4. The tension of the tension adjusting roller is too small.
The anastomotic strength of the zipper is too small. 1. 2. The thermal cover of the opening side / inner bag side of the zipper is set reversely. 3. The temperature of heat seal of zipper is set too high, which makes the anastomotic part deform, especially the concave part opens. 4. At the zipper plate, the flow of the film deviates from the angle of the zipper plate, and the edge of the zipper plate rubs to the anastomosis part. 5. The rubber roller pressed the fitting part. 6. The edge of the rubber roller groove rubs on the fitting part. 7. During bag making in two rows, the film (especially OPP / CPP) shrinks due to heat, and the flat plate for bag making in the center of zipper flat plate rubs to the anastomosis part. 8. The top cooling plate is too wide, and the fitting part is pressed. 9. The upper and lower clearance of the lower rubber roller string is too small, and the zipper fitting part is pressed too tightly.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
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