Block bottom bag production process.
1, into the film for printing (printing each color has a plate roll, plate rolling is carved intaglio engraving), at the time of printing ink is continuously flowing, because the ink condenses, during the printing ink printing and membrane with a scraper, scraper is on board scrape ink roll out, such a hollow plate rolling can be printed.If the blade is stained with dirt on strips of ink pollution phenomenon will occur.Because ink for dot ink pollution phenomena in rolling printing ink splashed onto the packaging film and cause the dot of ink pollution.Block bottom food sack, Block bottom food packaging sales, Block bottom food packaging supplies
2, composite membrane after a good printing, for I company produces the film generally adopt wet after legally, is the color of
good film coated with glue into a baked to to bake 2 minutes after then and PE composite, the tension of composite is 5.6 kg.Our company is the two layers of composite packaging used.Block bottom food sack, Block bottom food packaging sales, Block bottom food packaging supplies
3, cure: the composite membrane after curing glue, glue curing effect is mainly will be able to firmly glue stick, curing general solidification under 50 ℃ for 24 hours.Is really of good composite membrane in 50 ℃ environment for 24 hours.If time and temperature of undesirable membrane composite is not tight phenomenon will occur.
4, good curing film and then to carry on the goods, after the goods with the standard sample print input computer, then good curing membrane through the computer control of a white screen, a nonconforming directly to paste a black mark on the film.Block bottom food sack, Block bottom food packaging sales, Block bottom food packaging supplies
5, the film after goods for cutting
6, after cutting the film bag, bag making is through the machine for automatic system directly to a film