Blow Molding Machine Heater Factory

Frequently Asked Questions

• Q: What type of heater is best for a blow molding die head?

• A: A cast-in heater is often the best choice as it provides uniform heat and is extremely durable. For less complex dies, a high-quality ceramic band heater can also be effective.

• Q: How can I achieve uniform heating across a large die?

• A: Using multiple zones of control, each with its own heater and thermocouple, is the best way. We can design a multi-zone heater to meet your specific requirements.

• Q: Why do my extruder barrel heaters fail prematurely?

• A: Common causes include plastic leakage, poor fit causing hot spots, and thermal cycling. Using high-quality heaters with robust lead protection and ensuring a proper fit can extend their life.

• Q: Can you provide heaters for both single and multi-layer blow molding?

• A: Yes, we have experience providing heating solutions for all types of blow molding machines, including complex multi-layer extrusion heads.

• Q: What is the typical lead time for a custom blow molding die heater?

• A: For custom cast-in or complex band heaters, the lead time is typically 3-4 weeks. We will provide a firm delivery date upon order confirmation.

• Q: Do you offer heaters suitable for PET preform molding (injection molding)?

• A: Yes, the heaters used in the injection molding stage of PET preforms are very similar to those used in other injection molding applications. We offer high-performance cartridge and nozzle heaters for this purpose.

• Q: Can you integrate thermocouples into your band heaters?

• A: Yes, we can machine a precision slot in the band heater to house a thermocouple, ensuring it reads the temperature as close to the barrel surface as possible.

• Q: What sheath material is recommended for my application?

• A: For most applications, stainless steel is a good choice. For very high temperatures or corrosive materials, Incoloy provides superior performance and longevity.