Film Properties

[brekpaen]

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

 

[patprimmer]

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

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[rodneybennet]

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