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What are the advantages and disadvantages of large-scale thick-sheet thermoforming?

Published time:

2020-06-23

Large thick sheet thermoforming Processing In fact, thick sheet thermoforming is similar in principle to thin sheet thermoforming. It involves heating the sheet in an oven until it softens, then immediately drawing out the air inside the mold and creating a sealed space around it, firmly attaching the sheet to the mold surface, and cooling it to form the product. Large thick sheet thermoforming Processing What are the advantages and disadvantages? Let's briefly introduce them below.

Advantages:

1 1) Lower mold cost than injection molding, shorter development cycle, suitable for small batch production.

2 2) One mold can produce products of different materials and thicknesses.

Disadvantages:

1 1) There are limitations on the shape, only semi-spherical products can be produced.

2 2) The product dimensional accuracy is lower than that of injection molding.

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Large thick sheet thermoforming Processing Process Classification

1. According to the mold used: Thick sheet plastic processing molds mainly include two types: convex mold and concave mold thermoforming.

Advantages of concave mold: The inner surface does not contact the mold, so it is suitable for parts with clean surfaces and inner surfaces used as working surfaces, such as refrigerator and freezer boxes. In addition, while ensuring the size of the inner surface, the sheet thickness can be reduced, saving materials and making it easier to form.

Disadvantages: Mold size parameters are not easy to grasp, and the internal dimensions of the mold are easy to expand and difficult to reduce.

Advantages of convex mold: Easy to reduce mold size, suitable for parts exposed to the outside, such as car instruments.

Disadvantages: The material thickness is thicker than the mold forming thickness, the material stretching is large, the A-surface is rough, while the A-surface of the freezer refrigerator inner tank or bathtub needs to be smooth and clean.

2. Classified by sheet thickness:

Currently, the market mainly provides two types of plastic processing. One is thermoforming with a thickness of less than 2.5mm, usually formed by coil processing. The other is large thick sheet thermoforming with a thickness of 3-12mm, usually formed by sheet processing.

Qingdao Kecheng Plastics Co., Ltd. is located in Qingdao. It has a superior geographical environment and convenient transportation. The company has Large thick sheet thermoforming experience in thick sheet thermoforming, thick-walled thermoforming, sheet thermoforming, ABS thermoforming, ASA thermoforming, PS thermoforming and plastic mold design. Welcome customers in need to inquire.

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