×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Thermoset of PP and PET

thread367-101127

Thermoset of PP and PET

Thermoset of PP and PET

(OP)
Hello!

We supplie a wide range programme of technical fabrics, machine stretching, wire mesh belts and filtration belts, woven from metal wire, plastic threads and/or a combination of these.

We give the PP and PET belts a thermoset treatment (heattreatment) to ensure that the belt won't shrink when it is used on a beltconveyer.

Is there someone who can tell me what happens to the material when given this treatment? We know that it works but we don't exactly know what happens to the structure of the material. What is the influence of the tension in the material? We would like to get more information about the proces to be able to predict how the belt will react during and after the heattreatment.

Kind regards,

Hans

RE: Thermoset of PP and PET

Thermo plastics have 'memory' in that when cold stretched or cold worked to cause them to plastically deform, and later, the temperature is raised somewhat above the cold worked temperature, the plastic will attempt to return to its original shape. The industry of heat shrink tube and tape products is based on this phenomenon.
What you are doing by heat treating the finished product is a form of stress relieving. By the way, thermosetting is a term that should be reserved for thermosetting resins which are quite distinct from thermo-plastic resins such as the PET & PP you are using.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close