Analyze the manufacturing process of plastic bag production equipment

1, mixing material: the raw materials of plastic bags, including PE particles, and other filling materials, if the non-transparent plastic bags, and masterbatch particles.Plastic bag production equipment in the mix, is to mix these raw materials, so that it into the next process: blow molding.Some shady manufacturers will also add some recycled materials in this process to reduce costs.

2. Blow molding: stir the plastic particles evenly, put them into the container, and start the blow molding process.

3. Printing: Offset printing and copperplate printing are generally used.Rubber plate printing has the advantages of fast plate making time, low plate making cost, but poor printing effect.And copper plate printing using computer engraving plate, and need to electroplate copper plate and other special treatment, so the plate making time is longer, but the printing effect is better, and can be retained for a long time.

4. Bag making: make printed semi-finished material into bags one by one;The vest bag and the mouth and hand bag should be made by hot cutting process, so that the handle can be pressed directly.The bag making machine will automatically count to ensure the accuracy of the quantity.

5, the hand: the vest bag and the mouth hand bag are different in the form of hand, the need for different hand mold, but the production process is basically the same.

6. Packing and shipping: the standard packaging of plastic bags is woven bags. The cost of carton packaging is relatively high.