About hot runner

What is a hot runner
Introduced to the plastics industry more than 50 years ago, hot runner technology has revolutionized injection molding processing capabilities by improving molded part quality, improving operational efficiency, reducing scrap and saving money.

What is a hot runner A hot runner system is a molten plastic conveying device used in an injection mold. In other words, a hot runner system consists of a heating component (usually electrically) used inside a plastic injection mold that brings molten plastic from the injection molding machine barrel into the mold cavity. The size of the hot runner melt channel depends on many factors such as resin type, injection speed, fill rate, and molded part. A temperature controller (either a standalone controller or a controller from an injection molding machine) heats the hot runner system in the injection mold and the resin in the barrel to processing temperature and injects the resin into the mold. The resin passes through the inlet, down into the manifold, and then diverts to individual nozzles and through the injection point (or gate) into the final mold cavity, where the final part is formed. Today’s molds can have anywhere from 1 to more than 192 nozzles, depending on the plastic part being made.

What is the purpose of a hot runner system?
Hot runner systems deliver liquid plastic to multiple mold cavities to manufacture plastic products. It is an injection-molded component that uses heated manifolds to keep plastic in a molten state.

Injection Mold Manufacturing

WHY CHOOSE TKB Injection Mold Manufacturing?

Your injection mold manufacturing makes your product from concept to reality?

Your injection mold is manufactured with the ideal precision?

Want custom plastic molds to without flashes and with durable mold die life?

Then start mold manufacturing at TKB Mold, and let’s creat an ideal injection mold solution for your product.

Out standing engineering team for export molds

Rich experience in mold fabrication

Advanced manufacturing equipment

Quality assurance of ISO9001: 2015 system

Fast delivery time

Excellent after sales service

TKB Process for Injection Mold Manufacturing

To make a good quality export plastic injection mold, processes as below for your reference:

DFM Report, Mold Flow analysis, conclude 2D/3D Mold drawing, approval to mold fabrication.

Mold steel preparation—Processing—Mold Base Processing—-Electrodes Processing—-Mold Parts Processing—-Quality Control—–Mold Fitting and Assembly—Inspection—-Mold Trial—Mass Production Trial—Inspection PASS—Pack and export the Mold

TKB types of plastic injection mold

Since plastic injection mold is widely used for many industries, TKB mold has advantage for producing high precision injection molds as follows:

Automotive Mold +

Medical Mold +

Electronics Mold +

Home Appliance Mould +

Industrial Mold +

Aerospace Mold +

Overmold +

Precision Molds +

major mold applications

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.

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.