The mounting method of the hot film dedicated to the automatic laminating machine on the equipment heated to a certain temperature (about 100-180 °C) is called hot laminating, which can be divided into single-sided hot lamination and double-sided hot lamination because of its light permeability And good waterproof, good heat resistance, strong hardness, suitable for post-production of advertising pictures based on lights or other occasions. However, hot laminating equipment and consumables are more expensive, complicated to operate, consume more energy, and cost more.
1. The product to be constructed by the automatic laminator must be straight. Handle uneven paper with "lotus edge" and "tight edge" phenomena. Paper with "lotus edge" can be baked, and paper with "tight edge" can be hung.
2. Be sure to wait for the blot to dry before coating, otherwise it will cause blistering or hair pulling.
3. Spray as little powder as possible during printing, otherwise it will cause emptying and blistering at the powder pile. Before the computer bronzing machine works, the powder should be disposed of. If the number of prints is large, it can be hung to dry to remove the powder, and if the number of prints is small, it can be wiped manually.
1. The product to be constructed of the pre-coating film laminating machine must be straight. Handle uneven paper with "lotus edge" and "tight edge" phenomena. Paper with "lotus edge" can be baked, and paper with "tight edge" can be hung.
2. Be sure to wait for the blot to dry before coating, otherwise it will cause blistering or hair pulling.
3. Spray as little powder as possible during printing, otherwise it will cause emptying and blistering at the powder pile. Before the computer bronzing machine works, the powder should be disposed of. If the number of prints is large, it can be hung to dry to remove the powder, and if the number of prints is small, it can be wiped manually.
4. When laminating, attention should also be paid to the direction of the paper strands, especially thick paper, to reduce the phenomenon that the paper is curled due to rolling and stretching.
5. Temperature control is very important, it is best to be at 40~60℃ (low temperature cold mounting), too high temperature will deform the paper and film, causing the product to curl, too low will cause insufficient viscosity. The temperature of coated paper should be slightly lower than that of offset paper.
6. The maintenance of the rubber roller is also very important. Adjust the expansion and tighten the pressure evenly to keep the rubber roller clean. Before working, let the rubber roller preheat for 10-20 minutes to better improve the quality of the film.
Pre-coated film laminating machine, no gluing and drying parts, small size, low cost, flexible and convenient operation, not only suitable for laminating processing of large batches of printed products, but also suitable for laminating small batches and scattered printed products such as automated desktop office systems Processing is very promising.
Laminating machine manufacturers use a flat knife to cut like a razor, and the laminating machine manufacturers drop to fall in the process of material operation, so as to achieve the purpose of slitting. There are two types of this. Overhanging slitting is when the material passes through two rollers, the razor falls down to cut the material longitudinally. This slitting method is convenient for knife and easy to operate. Groove slitting is when the material runs on the grooving roller, the cutter is dropped into the groove of the grooving roller, and the material is cut longitudinally. When slitting cast PP film or film with narrow edge material, this slitting method is commonly used to improve the slitting efficiency.
1. The product to be constructed must be straight. Handle uneven paper with "lotus edge" and "tight edge" phenomena. Paper with "lotus edge" can be baked, and paper with "tight edge" can be hung.
2. Be sure to wait for the blot to dry before coating, otherwise it will cause blistering or hair pulling.
3. Spray as little powder as possible during printing, otherwise it will cause emptying and blistering at the powder pile. Before spraying the film, the powder should be disposed of. If the number of prints is large, it can be hung to remove the powder, and if the number of prints is small, it can be wiped manually.
4. When laminating, attention should also be paid to the direction of the paper strands, especially thick paper, to reduce the phenomenon that the paper is curled due to rolling and stretching.
Problems and solutions of fabric wrinkle of automatic laminating machine:
1. Check whether the unwinding and unwinding rods bounce during the normal operation. Cause: If there is a bounce, the unwinding of the unwinding motor and the unwinding rod will cause different tensions at both ends.
2. Carefully check whether the front and back ends of the cloth are aligned
3. Check whether the cloth-dispensing motor is running normally Cause: If the cloth-discharging motor does not rotate, it will cause the cloth to be slack and easily wrinkled
4. The print head installation is not parallel
5. The fabric is too thin Caused by: the fabric is too thin, the fabric is easily deformed under a certain tension
In the case that the colored paper for mounting and printing is thin and curled, the speed of the machine should not be too fast. When loading the paper and corrugated board, the relative positions of them should be aligned to avoid deviation errors due to the paper positioning. , Resulting in inaccurate lateral lamination, in order to ensure the accurate placement of facial paper and corrugated cardboard, the production speed of the laminating machine should be reasonably controlled according to the characteristics of facial paper; the relative position of facial paper and corrugated cardboard should be aligned The travel of the upper and lower chains must be accurate; after the upper and lower papers are aligned, the paper stopper of the stacking table should be fixed.
The film of this pre-coating film laminating machine is formed at one time, and the consumables used have been coated with glue. When the film is coated, the glue is melted by heating, and then the film is adhered to the printed matter by pressing. This kind of film coating equipment is cheap, simple to operate, and does not generate harmful gases during operation. It is a trend in the development of film coating. In today's society that is increasingly environmentally friendly, I believe that this technology will one day replace the pre-coated pre-coated film and become The main laminating technology in the domestic printing industry.
Because the water-based glue can dissolve the powder sprayed on the surface of the printed matter, when the snowflakes appear on the coated product, it feels incomprehensible. In fact, the reason is very simple. The water-based glue itself is also limited by the solubility. If the print powder is too large, the excess part cannot be When completely dissolved by the glue, a large area of snowflakes will appear.
There are three ways to solve this situation:
1. Coordinate the upper and lower processes to minimize the amount of powder sprayed during printing;
2. The amount of glue should be properly increased to increase the ability of the glue to dissolve the powder;
3. Clean the suspended powder on the surface of the printed matter before laminating
Since the water-based coating adhesive dries quickly, if it does not flow at rest, it will dry into a rubber skin and become a solid block. If it is attached to the glue roller or pressure roller, it will cause the local glue to be too small, or the local pressure will be too large when applying pressure. Therefore, keep the glue roller and pressure roller clean during the lamination process.
If there is too much dust in the surrounding environment, there is dry rubber and cut film fragments in the glue, the coated product will have snowflakes, so you should pay attention to the environmental hygiene. If you don’t use the glue, you should pour it back into the glue bucket to seal it, or take Filtering method before glue.