What is the production process of coffee packaging bags？

1. Purchasing raw material films according to client needs.

Plastic coffee packaging bags are made of different films, with two or three layers, or even four layers. Generally, the type of film is determined according to the size and material of the bag required by the customer.

2. The need for engraving copper plate.

Generally, the composite plastic coffee flexible packaging is a gravure printing process, and the copper plate needs to be engraved first. The copper plate is engraved according to the pattern and size of the customer's plastic packaging bag.

3. Color printing, compounding and bag making.

a. Color printing: The color printing machine is responsible for printing the pattern on a layer of film, and this layer of film with the pattern is generally the middle layer of the finished plastic coffee packaging bag.

b. Compounding: A plastic coffee packaging bag is made of several layers of films of different materials. The compounding process is to firmly compound these layers together.

c. Bag making: The composite plastic coffee packaging bag is also in the form of a roll film. Finally, according to the size and shape of the customer's bag, the large tube of roll film will be cut into small packaging bags one after another.