The production process of waterproof bags includes the following steps:
1. Material preparation: select materials suitable for the production of waterproof bags, such as PVC, TPU, etc. Cut the material into corresponding sizes.
2. Design plate making: design plate making according to the size and shape of the waterproof bag, and print it on the material.
3. Printing: According to the designed printing patterns and characters, printing technology is used to print the patterns and characters on the materials.
4. Bag making: cut the printed materials into corresponding shapes according to the size and shape of plate making, and then heat press them to make waterproof bags.
5. Packaging: The waterproof bag will be packaged for transportation and sales.
It should be noted that the quality of each link should be strictly controlled during the production process to ensure that the quality of waterproof bags meets relevant standards and requirements.