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About plastic injection molding china

All movement during injection molding, whether hydraulic or electric, creates injection pressure. Proper control of the injection molding pressure required produces a quality product. Injection pressure regulation and metering system On hydraulic injection molding machines, all actions are performed by the oil circuit responsible for the following operations:

1. The plasticizing section screw rotates.

2. Slider type feeder (the nozzle is close to the nozzle bushing).

3. The axial movement of the injection screw during the injection and pressure holding process.

4. Close the base material on the injection rod until the toggle rod is fully extended or the piston mold closing stroke is completed.

5. Start the ejector of the assembly ejector to eject the components.

Mold design: A proper mold design plays an important role. In order to avoid possible molding flaws, the designer needs to have experience in manufacturing similar parts, and the knowledge of versatile plastic materials. For more demanding or complicated plastic parts, a mold flow analysis will be done for the fine tune of the mold design.

environmental impact
Many plastics used in everyday life are thermoplastics that melt when heated and return to their original solid shape when cooled. Injection molding is one of many large-scale manufacturing processes. The process starts with molten thermoplastic pellets, which are then pushed into a mold. After cooling, the injection mold accepts the plastic and sculpts it into a new shape. Injection molding is used in a wide variety of applications. It can incorporate various additives and enhance certain properties.

Injection molding services should consider the environmental impact of their process. Several factors affect the environmental impact of the process, such as energy, electricity and water usage. The manufacturing process itself is environmentally friendly, using 20% less energy than it did a decade ago. For example, using lightweight plastic is more efficient than metal, helping to reduce fuel consumption. Plastics are also used in double-glazed windows and insulation, helping to save energy.

 

 

 

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FAQ

Date:2021-8-10

FAQ/ Frequently Asked Questions

 

 

As a plastic mold and injection molding company in China, we prepared answers for following most frequent asked queries for you, for more queries are always be here for you.

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CONTACT US

 

1. What info needed to get a correct mold quotation? How fast does it take to quote a project?

1)2D or 3D product drawing is needed for a mold quote;

2) If special requirement on mold steel, mold life, cavity quantity, hot runner requirement, part material, forecasted year quantity. Complete information will help to a most suitable cost effective, value added mold solution.

3) Normally take 2 working days to quote a new mold project seriously, and expedite quote is also available.

 

 

2. What’s the payment condition in TKB Mold?

1) New customer for mold: T/T 50% deposit, 50% against sample approval.

2) Mold modification: 100% upon sample approval.

3) Injection molding parts: 50% deposit, 50% before shipment.

4) VIP customer special terms: to be negotiated.

 

 

3. What’s the price terms/freight TKB mold will offer?

  • Normally TKB will offer ex-work TKB price for injection mold and plastic parts.
  • Free mold trial shotting samples free of charge and with freight to collect.
  • VIP customer special terms: to be negotiated.

 

 

4. What’s lead-time for a plastic mold and injection molding processes?

  • Injection mold lead-time counted from mold drawing approval and receipt of deposit to first mold trial(T1), and the difficulty of the molds determines how much time is needed, normally 20 to 60 days.
  • Injection molding lead-time counted from sample approval and receipt of deposit to production finish, order quantity determines how much time is needed, normally 7 to 15 days.

 

 

5. Will TKB send DMF to customer?

Yes,TKB Mold will send DFM (design for manufacturing) analysis and even mold flow analysis prior to the start of mold construction for customer review/approval.

 

 

6. Will TKB send mold design for approval?

After DMF approval, TKB will send the mould design for approval, and TKB will not start steel-cut before getting customers written approval of mold design.

 

 

7. How many plastic samples will be free provided?

TKB normally would provide 10~20 shots first mold trial shooting samples with gate(if have) free of charge according to the size of the parts, it would be freight to collect.

 

 

8. Which side provides plastic resin for injection mold trial?

TKB can provided plastic resin, if needed customer can provide the plastic resin the same.

 

 

9. How to make sure of quality before shipment?

shipment can be arranged only after TKB QC inspection PASS, or customer QC inspection PASS, or third-party inspection PASS if required. And TKB will always be there to provide full support.

 

 

10. How will TKB keep record of all mold data.

TKB will keep record of all final approved 2D, 3D mold drawing, modifications document, and send to customer for file to avoid future confusion in case engineering change is needed.

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