1. Choose the right glue
Choose the appropriate glue for compounding of aluminum-plated film such as VMCPP, VMPET, etc. The difference between VMCPP and VMPET of different manufacturers is very big.
2. Process
①The temperature of the oven and the composite roll are reduced by 5-10℃ respectively;
②The temperature of the curing chamber does not exceed 45℃;
③PET/VMPET/PE (CPP) is compounded for the first time and then cured for 1-2 hours, and then compounded for the second time;
④ If the air is dry, reduce the curing dose by 10%.
How to make aluminum foil bags?
1. The choice of spelling
The more parsing, the lower the cost. Choosing the appropriate specifications according to the equipment situation can greatly reduce the loss.
2. Adhesive selection
Choose an adhesive with large initial tack, high solid content and good wettability.
3. Process
①The amount of glue applied is about 1.5 times of the white film. When the printing is full or the printing area is large, the amount of glue applied should be further expanded.
②Cure for 13 hours after the first time of compounding, and then carry out the second time of compounding, and the product will be cured for 72 hours.
③The aluminum foil does not pass through the flattening roller, but faces into the composite roller.
④Tension control.
⑤The temperature of the oven and composite roller should be increased as much as possible.
How to make cooking bags?
The composite cooking bag film is a comprehensive test for the compound operators and equipment. By making the cooking bag film, the management level and operation level of the workshop can be comprehensively improved.
1. Material: PET, AL, NY, CPP, glue.
2. Coating amount: 5-5.5g/m2(135℃) 4.5-5.5g/m2(121℃)
3. Oven temperature (60℃, 70℃, 80℃), good ventilation and clean environment (a point is a source of damage).
4. The temperature of the composite roll (80-90℃), and the pressure of the composite roll should be as large as possible.
