Ramon,

If you would like a thermoset perform, you could try Emerson & Cuming film adhesives at http://www.emersoncuming.com/prodgeneric.asp?cat_id=3&sub_cat_id=2&prodtype_id=5&region_id=1


If that link does not work for you just go to http://www.emersoncuming.com and click on the film adhesives in the lower right corner.

You can get to the same data info by going to the Ablestik web site at http://www.ablestik.com/c_home.asp?item=Home


To process most of these films it is customary to 'tack' the perform on one part of the assembly at 70-80°C, then mate the other components of the assembly.  Many times, the assembly is clamped together during cure.

The film is a B-staged adhesive.  It is typically supported by a woven fiberglass mat.  Most are tack-free at room temp.  At 70-80°C the material softens significantly and even begins to flow somewhat.  Final cures are typically in the 125-150°C+ range for the E&C / Ablestik materials.  Storage is typically at -40°C.  Check out the specific data sheets for what may be best suited for you application.

There are other perform suppliers out there as well, but thought this might get you started.

Steve 




-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon
Sent: Tuesday, February 20, 2007 12:02 PM
To: [log in to unmask]
Subject: [TN] Preforms Adhesives

 

		

	Technetters:
	             Do you know of preform adhesives to bond stiffeners
or heatsinks to PWBs that do not require vacuum bags and bake, but only
bake in an oven with a proven track record?
	Regards,
	Ramon

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------



THE INFORMATION CONTAINED IN THIS E-MAIL MESSAGE AND ANY ATTACHMENTS SENT FROM GENTEX CORPORATION IS GENTEX CONFIDENTIAL INFORMATION INTENDED ONLY FOR THE PERSONAL USE OF THE INDIVIDUAL OR ENTITY NAMED ABOVE. If you are not the intended recipient, you are hereby notified that any review, distribution, or copying of this communication is strictly prohibited.  If you have received this communication in error, please immediately notify the sender by return e-mail, and delete this e-mail message and any attachments from your computer.  




---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------