×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Film Properties

Film Properties

Film Properties

(OP)
Hi,
   I am looking to obtain a film with the following properties and was hoping you all might help me out.
1) Optically and X-ray transparent
2) Non-oriented polymer
3) Good vapoer barrier properties
4) Can be embossed while still maintaining these properties
5) Ideally 50-25 microns (0.002"-0.001" thick

Any suggestions about what would suite these needs and where to obtain it?

Thanks in adavance,
Brek

RE: Film Properties

The process of making thin normally stretches it which causes some orientation.

Good barrier to what vapour. Different polymers are good to different vapours. To get good barrier to everything with reasonable physical properties you might need a co-extruded film.

The list of transparent to visible light films is very large.

I do not have a list of transparent to X-ray, but such lists exist, posibly on matweb

http://www.matweb.com/index.aspx

Any could be embossed to some degree, but it might effect different properties as it might anneal that embossed area.

When you say transparent, do you mean passes light or passes light with no significant scattering.

Regards

eng-tips, by professional engineers for professional engineers
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.

RE: Film Properties

Need some more information on the application (required exact stress-strain, flexural properties), but may be you could consider crosslinked polyethylene (PEX) or a specific grade of Polyimide. I am not sure whether the materials is sufficiently transparent, but PMMA is very probably not an option for your application (thin films are impossible).

You may want to check the following freeware knowledge base at:

http://www.composite-agency.com/materials-forum.htm

Sincerely,
Rodney

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!


Resources