The general rule of cursor spacing is as follows:
1. After printing, the distance between cursors tends to decrease. The degree of shrinkage depends on the size of the printing tension, the setting of drying temperature and the thermal stability of the material itself.
2. In dry lamination, the appropriate composite tension has little effect on the cursor spacing of printing film, but excessive coating tension will make the cursor spacing longer.
3. Due to the influence of the hot melt resin, the elongation of the cursor spacing under the same composite tension is larger than that of the dry compounding.
4. In the process of plate making, the size of related structural products can be partially adjusted according to the variation law of cursor spacing.
5. Stabilizing the whole production process parameters is the key to ensure the consistency of cursor spacing change. Obviously, the influence of unstable cursor spacing change is much more obvious. Especially in the process of acceleration and deceleration, the change of cursor spacing caused by the change of tension.
6. For special materials, such as heat shrinkable film printing, temperature control is the key. Another example is OPP / PVDC coextrusion film / PE structure composite film, because PVDC coextrusion film in aging (55 degrees) will appear shrinkage phenomenon, resulting in the change of cursor spacing, at this time, it is necessary to strictly control the curing temperature (such as curing at 35 degrees low temperature).
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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