Eco-friendly paper tray is an ideal lined cushioning package. It uses waste newspapers, carton paper, paper tubes, and pure wood pulp as the main raw materials. Eco-friendly paper trays have gradually replaced many traditional packaging in the market. Practicability, environmental protection, and resource saving have great advantages, so the paper tray industry has a better development trend, so what are the molding processes of environmentally friendly paper tray products?
What are the molding processes of environmentally friendly paper tray products:
1. Vacuum suction molding method: It is a method of popularizing paper-plastic products. According to its different structure, there are three ways: drum type, flip type, and reciprocating lifting type.
Rotary drum type: continuous rotating production, high production efficiency, large investment in mold shells, high mold processing precision, high technical requirements for equipment processing accuracy, one set of concave molds with eight sets of convex molds. Need to use the CNC center to process the mold, the processing cycle is long, and the investment is large. Because it is continuous production, it is suitable for mass production of stereotyped products, such as trays, dinner trays, and egg trays. For industrial molding production, it is not applicable due to non-standard, small quantity, small batch, and large investment in molds.
Flip type: lower production efficiency than drum type, suitable for medium batch and non-standard production of industrial molding, but because it is a set of concave molds with two sets of punches, the mold needs to be processed by a CNC center, and the mold shell investment is large and the cycle time long. Reciprocating lifting type: The production efficiency is the same as that of the flip type, which is a common production method at present. Because the equipment only needs a set of concave molds to match the punches, and does not need CNC center processing, it is especially suitable for non-standard, small batch, and fast cycle industrial packaging products. .
2. Grouting molding method: The injection molding method is to calculate the required amount of slurry (material) according to different pulp packaging products, and then quantitatively inject it into the molding cavity for adsorption molding. This kind of molding method adapts little to changes. The finalized standard products are commonly used in tableware molding products. Because the finalization calculation is difficult to grasp, this molding method is not used in non-standard paper-plastic packaging (industrial packaging).
