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Selection of thick-sheet thermoforming molds and materials

Published time:

2022-07-02

   Thick Sheet Thermoforming The raw materials of the product are only plastic sheets, and the thickness of the sheets generally does not exceed 1.5MM. Commonly used sheets include: PVC, PET, PP, PS, and flocked sheets, gold-plated sheets, and anti-static sheets based on these.

  

 Thick Sheet Thermoforming


  PVC: A commonly used thermoforming material, it is soft, tough, highly plastic, and can be made into transparent and various colors. Transparent PVC is often used to package electronic products, cosmetics, toys, and gifts.

  PET (A-PET): A hard, tough, high-strength, bright surface, environmentally friendly, non-toxic, transparent, and multi-colored sheet. The disadvantage is that PET is difficult to combine with high-frequency heat, and the price is much more expensive than PVC. This material is often used by users who require advanced and environmentally friendly products to replace PVC. Food preservation film

  PS: Low density (lightweight), environmentally friendly, non-toxic, good plasticity, poor toughness, and high brittleness. It cannot be made into transparent materials and can only be made into base thermoforming. Because it is easy to crack, this blister is not easy to recycle.

  PP: The material is particularly soft, tough, environmentally friendly, non-toxic, and high-temperature resistant. It is often used to make packaging for catering utensils or other high-temperature resistant products; however, it has poor plasticity, high processing difficulty, poor surface gloss, and the color will fade during processing.

  PET-G: The physical properties are similar to A-PET, but it can be high-frequency heated, and the price is 80% higher than A-PET.

  1. Thick Sheet Thermoforming Mold Selection

  Plaster: Carved and shaped with semi-wet plaster, then dried and shaped. It is low-cost and easy to modify, but the precision is not high, the surface is not smooth, and it is fragile and not durable. Therefore, it is often used for prototyping, making patterns for electroplated copper molds, or some thermoforming molds that do not require small-batch production.

  Aluminum mold: Aluminum ingots are machined (lathe, milling machine, CNC, etc.). High precision, smooth surface, durable, but very expensive. Generally used for thermoforming products with higher precision requirements than copper molds.

  Electroplated copper: After the sample is made, a layer of copper shell is electroplated, which is called an electroplated copper mold. Due to its smooth and durable surface and low cost, it is a commonly used thick-sheet thermoforming mold.

  2. Advantages of Thick Sheet Thermoforming Process

  1. Thick sheet thermoforming products have a wide range of applications, such as PC lampshades and mechanical panels, instrument and equipment housings, household appliance inner and outer shells, automotive interiors, sports equipment housings, sanitary products, etc. They can all be processed using thick sheet thermoforming technology.

  2. Its advantage is the low cost of mold manufacturing. Therefore, the investment is small, and the cost is low.

  3. Thick sheet thermoforming technology can process sheets of 12MM or even greater thickness, and the processing area can reach more than 10m2, which can be used to process and manufacture products with larger appearance and greater thickness.

  4. With the rapid development of the plastics industry today, the application fields of thick-film thermoforming are constantly expanding. Now, with the continuous introduction and improvement of domestic thick-film thermoforming machine technology, its energy saving, power generation, and non-easy thermoforming are much better than before.


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