What are the molding processes of pulp molding

Aug 23, 2021

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Jimmy Louis
Jimmy Louis
Senior Packaging Engineer at HESHENG with 8+ years specializing in molded pulp product design and sustainable packaging solutions. Expert in dry-pressing, semi-wet-pressing, and custom tray development for electronics, cosmetics, and consumer goods i

Paper tray, also known as pulp molding, has good shock-proof, shock-proof, anti-static and anti-corrosion effects, and has no pollution to the environment. It is more conducive to the export of manufacturers' products. It is widely used in electronics, electrical appliances, computers, and machinery. Packaging for parts, industrial instruments, handicraft glass, ceramics, toys, medicine and other industries. Today, the editor will tell you about the molding process of pulp molding.

Rotary drum type: continuous rotating production, high production efficiency, large investment in mold shells, high mold processing accuracy, 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 lift type: The production efficiency is the same as the flip type, which is a very common production method at present. Because the equipment only needs a set of concave molds to match the convex molds, and does not need CNC center processing, it is especially suitable for non-standard, small batch, and fast cycle industrial packaging. Product (Industrial packaging product mold production cycle is usually within 10 days)

    2. Grouting method: According to different pulp packaging products, the injection molding method calculates the required amount of slurry (material) and quantitatively injects it into the molding cavity for adsorption molding. This kind of molding method adapts to little change. The finalized standard products are commonly used in tableware molding products. Because the finalizing calculation is difficult to grasp, this molding method is not used in non-standard paper-plastic packaging (industrial packaging).

    The above is an introduction to the molding process of pulp molding, I hope it can be helpful to everyone. Today, the editor will tell you all about this, see you next time.

    Dongguan Lvyou Paper Products Co., Ltd. is a high-tech company serving the paper product industry and paper product packaging. Adhering to the business philosophy of "professionalism, integrity and trustworthiness", the company provides world-class products and services in the fields of research, development, and high temperature heating. Our years of experience and accumulation, our professionalism and continuous innovation, our integrity and quality service have won unanimous affirmation and praise from customers in various industries, and have won excellent reputation for the company

  

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