×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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

Insights about UL pov on non-FR components in a rated pkg.

Insights about UL pov on non-FR components in a rated pkg.

Insights about UL pov on non-FR components in a rated pkg.

(OP)
First, sorry for the cryptic subject line.

We design and manufacture enterprise IP imaging products the materials for which "need" to be UL94 HB as a minimum. You will know that in the case of resins, their FR rating is qualified with a specimen thickness. In essence UL/CSA requires that the section thickness of any parts made from a rated material be at least that thk.

We need to use a particular, thin (0.020") flocked rigid film material that solves an awkward optical issue we are having. There is no FR rating for the material (PS rigid film with acrylic flock). The material is die-cut and bonded to the inside wall of a rated plastic body. I link to a sketch in which you will note that the potential energy sources are separated from the non-rated material. Obtaining a rated material in our quantities is not realistic.

My question is "What certification experiences can you share about small mass non-rated components inside an enclosure made with suitably rated materials?"

Thanks for any insights offered!
Nigel

"You will master any feeling of inadequacy you may be having"
....from my fortune cookie @ the buffet!

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



News


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