
Since entering the winter, many food packaging bags have a lot of quality
problems due to the composite process, such as: the phenomenon of poor peeling
strength after composite, difficulty eliminating air bubbles, and increasing
white spots have occurred. loss. Some of the compound film workers of some color
printing factories have also talked about it. In summer, the same dry method
does not have these problems. It will appear in winter and can not be solved.
For analysis and suggestions for industry reference:
1. The process of dry composite machine:
1. tension control
(1) Put the roll of the substrate A, put the tension control system
(2) Compound tension control system
(3) Tiring tension control system
2. Dry system control:
(1) The composite machine is usually divided into a three-stage drying
system. The set temperature is the first section 50-65 ° C, the second section
is 65-75 ° C, and the third section is 75-80 ° C
(2) The wind speed is controlled at a minimum of 25 meters per second. At the
wind nozzle, it is best to reach 35 meters per second.
(3) Control the amount of air volume to adjust the oven temperature.
3. The number of wire rollers is related to the amount of glue of the
adhesive.
4. Control the uniformity of coating between the spatula and the
adhesive.
5. Preheating system
6. Compound part
7. Cooling system
8. Receive volume solidification
Read recommendations:
Wholesale Price Biodegradable Aluminum 3 Three Side Seal High Temperature Microwavable Food Retort S
packaging spout pouch manufacture
wine bag in box manufacture
Can the use of vacuum bags ensure that the food does not get moldy?
The difference between textured vacuum bag and vacuum bag