July 14, 2022

Hot runner soft starting

blog injection molding

I recommend you always use soft start when starting up your hot runner system. If you use filled resins or resins with short residence time, you should purge the system out one a week or each time you shut the system down. This will prevent your system from premature issues from wear. I would recommend you take the system apart and inspect it every 6 months minimum.

Soft start is designed to make sure any moisture that may get into the heaters will be baked out at low slow temperature rise before higher temperatures are applied. This will prevent your heaters burning out prematurely. Many times when I have to trouble shoot a hot runner in the field, a customer has issues starting up a system that has been running a filled resin. The suggestion of cleaning out the filed resin at shut down would not void a warranty. In fact, if the hot runner supplier heard that they would support it. As far as the timing of you doing general maintenance, it is recommended you follow the provided guide lines from the original hot runner supplier. If a system has been passed along to more than 1 molder, then these instructions are sometimes not passed along this would be a general suggestion.

Related Blogs

blog injection molding
Build quality plastic injection molds in China
The process of successfully designing and manufacturing new plastic injection molding tools starts with the design of the product, and the design of the plastic injection mold. If an injection...
blog aco mold
Slow cooling relieves internal stresses of molded parts
Slow cooling relieves internal stresses of metals. Plastics, especially ones with more crystaline (less amorphous) structure shrinks more as they cool slowly. Slower cooling promotes more internal crystaline structure, which...

Table of Contents

Tell us your request right now and contact us today about getting started on your next project together!


Or Fill Out The Contact Form Below:

Support Your Business with Better Molding Solution

Contact Info
Copyright © 2023, ACO Mold. Terms of Service and Privacy Policy. All rights reserved.  Powered by ACO MOLD.
1 1.png

Join Our Network

Please email to sales@acomold.com
or fill out the contact form below: