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　　The layout and operation of printing equipment determine the quality of packaging plastic bags. These four components are: ink scraper, rubber roller, ink supply system and dry box. Next, let's talk about how to ensure the quality of plastic bags.

　　1. Good products can be printed after scraping

　　If you want to scrape off unnecessary ink without dirty hanging, ink flow (color flow) and knife line, you must adjust the hardness, height and angle of the scraper.

　　2. Rubber roller

　　The hardness and pressure of embossing cots simply affect the ink amount of plastic bags.

　　The hardness of embossed cots affects the inking amount, while the hard inking amount of COTS is small and the soft inking amount of COTS is large. The pressure of the cot is too high and the ink volume is too large. Cots have less pressure and less ink.

　　India territory case is very deep, the material of COTS must be very hard; The printing plate has a light pattern, so the rubber roller for printing must be made of softer material. If the printing speed of the packaging plastic bag is fast, the material of the cot must be hard. If the printing speed of the packaging plastic bag is slow, the soft material printing cot must be accepted.

　　3. Ink supply system of printing equipment

　　Reincarnation must be good, and always make sure that the ink is continuous. The consistency of ink viscosity should be ensured, and the measurement and increase of solvent should be carried out on schedule. New and old inks shall be mixed in proportion.

　　Apply compound solvent. In order to avoid ink composition imbalance, ablation and anti roughness. It is very good to use the ink bucket and mixing rod to hold the ink cycle. Note that the ink bucket should not be too large and the size of the ink bucket should be moderate.

　　4. Drying tank

　　Improving the printing speed of packaging plastic bags is the result of the oven.

　　Ink is dried up in a hot atmosphere, not heated. The higher the temperature, the harder it is for the ink on the plastic bag to dry up.

　　If the temperature is too high, it will make the ink surface conjunctive. The pseudo drying atmosphere leading to the drying of solids is followed by premature evaporation of low melting point solvents, high boiling point residual solvents and slow drying speed.

　　The temperature of the designated drying tank shall be 40-50. The atmosphere can not be blown on the plastic film, and the heat can not be baked on the surface of the film. It should have good exhaust function and can not transport the atmosphere to the printing plate and ink cartridge. The drying box has very good secondary return air characteristics.

　　Article from: Kaiping plastic bag manufacturer   http://www.refeel.cn