Thick Section Rubber Molding
Thick Section Rubber Molding
(OP)
Greetings Rubber head Guru's
We are accomplished molders but have never ventured into the thick section molding. I currently have a contract to mold a 6"diameter by 8.5" cylinder (top and bottom edges have a 2" radius fillet). I'm searching for info on cure times, more or less shrinkage due to the thick section, how to overcome Backrind or other molding defects.
Thanks and God Bless
Sluggo
We are accomplished molders but have never ventured into the thick section molding. I currently have a contract to mold a 6"diameter by 8.5" cylinder (top and bottom edges have a 2" radius fillet). I'm searching for info on cure times, more or less shrinkage due to the thick section, how to overcome Backrind or other molding defects.
Thanks and God Bless
Sluggo





RE: Thick Section Rubber Molding
A couple of questions:
What type of compound are you molding, polymer-wise and cure system-wise (sulfur or peroxide?), and what are the compound's curing characteristics? Do you have curemeter data? Does the compound revert upon over-curing (like natural rubber)?
I'm not a molding expert, but I'm pretty sure that the answers to these questions will help others give you some guidance.
Tom Jablonowski, TSE Industries, Inc.
www.tse-industries.com
RE: Thick Section Rubber Molding