Hot Runner Systems for Injection moulds

Hot Runner Systems or Injection molding;



The cost savings, when using hot runners can be substantial, and the part quality is very often much better than cold runner. Usually when the quantities of the injected molded parts are large enough hot runner systems will be used and their cost can be verified.

With the increasing improved technology of today's injection moulding systems, the use of hot runners is becoming an industry standard .
Many applications simply are not possible with the old standard sprue and cold runner system, and hot runners offer a great way to maintain uniform wall thickness and eliminate knit lines and flow lines.

What are advantages of hot runner systems?

 Lower cycle times, thus faster total molding times.    
Less waste 
Ability to minimize gate vestige   
They create uniform wall thickness   
  Reduction or elimination of knit lines   
Great for high cavitation molding   
Often the only method for micro-molding. The center to center distance of the hot runner tips is as little as 17 mm.   
Standardization of components can mean significant savings in material and manufacturing.   
Many large molds rely exclusively on hot runners. 
when using Cold runners cannot these requiremenst can't be meet.

What about the maintenance of hot runners?
Hot runner systems require a new level of expertise on the part of the mold maker. However, this does not mean that it is overly complicated or highly specialized. A well designed system is relatively free
from maintenance, once it is properly installed.

It can, and does happen, that mold makers become frustrated with these systems and swear that they are too much trouble. This is usually due to the fact that the system is not properly installed or incorrectly operated in the molding process.

The leading system manufacturers have a well-trained team of specialists on hand to assist in the proper installation and operation of the systems. The time spent listening to these specialists is time well spent!

Are there different types of hot runner systems?

There are almost as many types as there are suppliers! Most share some common features, however. There are sprue gated systems, valve gates, tip gates (the most common), and edge gates. Any of the major suppliers can describe in great detail why their system is the best for your application. Hot runner systems are some of the most important mold components

What are the benefits on the longer term


Even though there is an small start capital necessary to invest in a  hot runner systems, it is very easy to justify the long-term benefits. Without increasing the complexity of the design of the mold, a hot runner equipped mold can significantly reduce costs. Because the hot runner is designed and manufactured independently, yet concurrently, the lead times are not affected.
Mold makers should always suggest methods forhis customer to reduce molding costs and increase the output of the mold. Being knowledgeable with various runner systems is a good way to demonstrate an active role in helping the molders bottom line. This in turn makes the likelihood of increased business  
even greater for the mold maker.
k � n P3p (�r en, that mold makers become frustrated with these systems and swear that they are too much trouble. 
This is usually due to the fact that the system is not properly installed or incorrectly operated in the molding process.

The leading system manufacturers have a well-trained team of specialists on hand to assist in the proper installation and operation of the systems. The time spent listening to these specialists is time well spent!

Are there different types of hot runner systems?

There are almost as many types as there are suppliers! Most share some common features, however. There are sprue gated systems, valve gates, tip gates (the most common), and edge gates. Any of the major suppliers can describe in great detail why their system is the best for your application. Hot runner systems are some of the most important mold components

Long term benefits

Even though there is an initial investment with hot runner systems, it is easy to justify the long-term benefits. Without increasing the complexity of the design of the mold, a hot runner equipped mold can significantly reduce costs. Because the hot runner is designed and manufactured independently, yet concurrently, the lead times are not affected.
Mold makers should always suggest methods for his customer to reduce molding costs and increase the output of the mold. Being knowledgeable with various runner systems is a good way to demonstrate an active role in helping the molders bottom line. This in turn makes the likelihood of increased business


k � n P3p (�r en, that mold makers become frustrated with these systems and swear that they are too much trouble. This is usually due to the fact that the system is not properly installed or incorrectly operated in the molding process.


The leading system manufacturers have a well-trained team of specialists on hand to assist in the proper installation and operation of the systems. The time spent listening to these specialists is time well spent!

Are there different types of hot runner systems?

There are almost as many types as there are suppliers! Most share some common features, however. There are sprue gated systems, valve gates, tip gates (the most common), and edge gates. Any of the major suppliers can describe in great detail why their system is the best for your application. Hot runner systems are some of the most important mold components

Long term benefits

Even though there is an initial investment with hot runner systems, it is easy to justify the long-term benefits. Without increasing the complexity of the design of the mold, a hot runner equipped mold can significantly reduce costs. Because the hot runner is designed and manufactured independently, yet concurrently, the lead times are not affected.
Mold makers should always suggest methods for his customer to reduce molding costs and increase the output of the mold. Being knowledgeable with various runner systems is a good way to demonstrate an active role in helping the molders bottom line. This in turn makes the likelihood of increased business even greater for the mold maker. ask for more information or click on our websites: www.injectionmoldinchina.com or jointquality.com