High temperature sterilization upright bag printing skills

Stand-up pouches are "stand up" to enter the customer's line of sight. Based on the factors of market shelves, stand-up pouches convey product information more eye-catching. Faster, its unique packaging ideas make it stand out in thousands of products. Because the stand-up pouches make the storage space more relaxed and easier to find, they are loved by consumers.

Our company is a branch company established by Hong Kong Meiya Packaging Enterprise Co., Ltd. and has successfully launched a pasteurized upright bag. So what's so clever about the printing process of the pasteurized stand-up pouch? This is the focus of the soft packaging manufacturer's focus. Here, I would like to share my company's experience with you.

There are three kinds of material structures commonly used in our company's high-temperature sterilization stand bags: PETl 2/NYl 5/AL7/
RCPP70. PETl2/AL7/RCPP70, NYl5/EVOHl5/RCPP70, print layer is PET, NY.

The PET film is thin and easy to wrinkle. Therefore, it needs a large tension during printing, and a special ink resistant to high temperature cooking is selected, and it is necessary to always pay attention to whether the film is electrostatic. The PET film can easily generate large static electricity, resulting in blockage, ink dot, knife line and other quality problems during printing. In addition to the conventional method of removing static electricity, it is an effective method to strengthen the temperature and humidity control of the workshop.

NY is the most difficult material to print. It is easy to absorb moisture, and the tension is extremely unstable. Therefore, the packaging film must not be damaged when it is not printed; the humidity of the test environment should be taken into consideration before printing; it is best to take dehumidification measures; print immediately after opening the packaging film, and at the same time, one process can not be ignored - preheating, preheating temperature control at 50 -80~C, no preheating equipment can be flexibly used for printing equipment, and the first color group can be vacated as a preheating device; the tension in the printing process should be properly reduced; after printing, it must be sealed and put into curing room for curing. - 3 days, then compound as soon as possible.

Whether printing PET or printing NY, the focus of control is ink. It mainly includes the following two aspects.

(1) Adjustment of printing ink suitability. Including viscosity. Color density adjustment. Viscosity automatic regulator can be used to adjust to improve work efficiency. The regulator can add the solvent according to the preset value to keep the viscosity of the ink unchanged. However, the color concentration of the ink should not use solvents; in the light, use special; medium light agent to adjust.

(2) Closely monitor the effect of active particles. After a certain time of printing, the ink will produce many reactive groups, these groups will be combined with the chromium ion of the gravure cylinder. When these conjugates appear in the shallow part of the graded version, their binding force will hinder the transfer of the ink. Cause blockage. Flowering point. Therefore, the manufacturer must not worry about the cost at this time, and an appropriate amount of the activity-reducing agent CHY-1 adjuvant can be added.

Our stand-up pouches can not only be used for high-temperature sterilization, but also can be combined with a zipper upright Zipper Bag, not only to facilitate opening and resealing, but also conducive to the preservation of food, prevent leakage of the internal logistics, moisture.

The combination of different materials determines the different uses of upright zipper bags to meet the packaging needs of various items. The following is an example.

(1) Upright zipper bags designed for the food industry can package cereals. Vegetables, pasta. Candy, thousand fruits, preserved fruit, drinks. Tea, spices, seasonings. Frozen meat, frozen foods, coffee and sugar. lotus root starch. Sesame paste and other powdered foods. Commonly used material constructions are: OPP/CPP, P[Down/VMPET/LLDPE. OPP/PET/P [, PET/PE, PET/PE, OPP/LLDPEE, etc.

(2) Upright zipper bags designed for chemical industry and daily-use chemical industry can be used to pack all kinds of detergents, such as laundry detergent, shower gel, shampoo, and detergent. Commonly used material structure: PET/VMPET/PI (multi-layer co-extrusion), PET/AL/PC (multi-layer co-extrusion) and so on.

(3) Enterprise zipper bags designed for the electronics industry can be packaged with computer color printing powder. Copiers, carbon powder and iron powder, electronic components, etc. Commonly used materials are: PET/AL/CPE.

Since the above materials do not exceed the requirements for high temperature sterilization, printing control is not difficult.