What materials are commonly used to make preform PET moulds?

Update: 16-05-2023
Preform PET moulds are typically made from high-quality tool steel, which is a high-strength alloy that can withstand high temperatures and pressures during the injection molding process. The most common types of tool steel used for preform PET moulds are:
1.P20: This is a low-carbon, high-alloy steel that is easy to machine and has good toughness and wear resistance.
2.H13: This is a high-carbon, high-chromium steel that is known for its excellent heat resistance, toughness, and wear resistance.
3.S136: This is a stainless steel that is highly corrosion-resistant and has good wear resistance and toughness.
4.NAK80: This is a pre-hardened steel that is highly machinable and has good wear resistance and toughness.

In addition to tool steel, some preform PET moulds may also incorporate other materials or coatings to enhance performance, such as:
1.Hard chrome plating: This is a process in which a layer of chrome is electroplated onto the surface of the mould to improve wear resistance and prevent corrosion.
2.Nitriding: This is a process in which the surface of the mould is hardened by exposing it to nitrogen gas at high temperatures, which improves wear resistance and reduces the risk of cracking.
3.Ceramic coatings: These are thin layers of ceramic material that are applied to the surface of the mould to reduce friction and improve release properties.

Overall, the choice of materials for preform PET moulds will depend on factors such as the desired level of durability, precision, and cost. High-quality tool steel is the most commonly used material due to its excellent performance and reliability.

Wide mouth preform mould
Wide mouth preform mould
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