Common molding process methods

A Grouting Molding​

Grouting molding

Utilize the water absorption characteristics of plaster molds, process raw materials into mud, inject them into plaster molds to form green bodies.

Grouting molding/Injection Forming is suitable for making products with relatively complex shapes, but the labor efficiency is low, the labor intensity of workers is high, there are many defects in the molded green body, and the loss of the mold is also large, so the molding cost is relatively high.

This method is often applied to irregular shapes, or products with large size and thickness. Such as cup handles, large spoons, vases, kettles/jug, special-shaped large bowls, etc.

B Roll forming

Roll forming1000

Use the roll forming machine to rotate the gypsum mold on the machine wheel, and turn the roller head to roll out the inner shape of the green body, and the outer shape is controlled by the mold.

Roll forming/Jiggering is suitable for making circular plates, bowls, and cups with symmetrical shapes and shapes. It has high labor efficiency and good body quality, and is suitable for mass mechanized and automated production.

Regular shapes can be made in this way.

C Compression Molding​

Pressure Forming1000

There is a mold for the product to be formed in the middle composed of upper and lower metal frames and gypsum. When forming, the upper and lower molds are aligned, and the cavity is put into the mud cake, and then the upper and lower molds are closed to make the mud cake full of pressure. In the mold cavity, it is pressed into a green body.

Compression molding/Pressure Forming is suitable for non-rotationally symmetrical plates and bowls, and has a high degree of automation, but the mold life is short and the cost is higher than Rolling formed.

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