Nowadays, more and more kinds of foods appear in the society, and food safety issues have become the top priority of people. What are the production processes of food packaging bags? Food packaging bags are equivalent to human clothes for food. It is very important. What kind of foods correspond to what kind of packaging bags, then what should the production process do?
Step 1: design artwork
Before the production of the packaging bag, it is necessary to have a design draft of the packaging bag. This design artwork needs to be completed by the customer and the designer. The general contents include: the design of the front of the packaging bag, the color is rich, the text font is matched, etc. The back of the bag should include: contact information, product introduction, etc., as well as the size of the bag and other data. These data need to be communicated one by one, the more detailed the better, and finally need to confirm one word by word to avoid unnecessary losses.
Step 2: plate making
After the artwork is finalized, professional plate-making technicians are required to color-separate the artwork. The general steps of plate-making are: confirm the type of packaging bag, confirm the font line of the packaging bag, confirm the size of the packaging bag, and confirm the transition color. , underlying color problems, shortening of substrates, etc.
Step 3: printing
After all the raw materials are prepared, the printing process is started, and the surface film is generally printed by a high-speed printing machine (one plate roll for each color, the engraving of the plate roll is generally gravure engraving), and the high-speed printing of the North India package. The machine is a nine-color printing machine, which can meet the needs of most customers. When printing, the ink will flow continuously and the ink will condense. Therefore, when the ink printing and film are printed, a scraper is set, and the scraper is used to roll the plate. The place where the ink is discharged is so that the recessed roll can be printed.
Step 4: compound
The compound is a composite film surface film and a heat-sealable inner layer film which are laminated with a special high-speed laminating machine for special glue.
Step 5: Curing
After the compounding is completed, the curing chamber is cured for more than 24 hours under certain conditions, so that the food packaging bag is not easily delaminated.
Step 6: Making a bag
The final step of making the bag, this step is mainly to require the bag making technician to ensure that the edge of the color printing bag is good and does not leak, and the temperature control of the hot knife must have certain technicality.
