OPTEK (operations technology)
Blairstown, NJ
908-362-6200
Ask for Richard or George,

If your West Coast give me a call and I can give you a different number for their guy
out here.

Chuck Brummer
818.734.4930


Martin Christie wrote:

> Chuck,
>
> Interesting...............who makes the Differential Pressure Laminator?
>
> Martin
>
> ===== Original Message from [log in to unmask] (TechNet E-Mail Forum.) at
> 28/09/00 16:28
> >Hi,
> >
> >Back in the days when we used an HRL for single sided resist lamination we
> >ran the
> >lower roll at 100F to keep the resist from sticking to the lower roll
> >between panels.
> >Still had good resist adhesion as long as the exit temperature of the panel
> >was at
> >least 145F.  The upper roll was set at 235F.
> >
> >We used to do it very unsafely.  All the guards off and the operators with
> >their
> >fingers very close to the pinch keeping light tension on the edges of the
> >flex, half
> >mil Kapton with half ounce copper.
> >
> >Now we use the Differential Pressure Laminator, (vacuum laminator).
> >
> >Good Luck
> >
> >Chuck Brummer
> >
> >Martin Christie wrote:
> >
> >> Hans,
> >>
> >> Do you still get good adhesion of the resist using the FR4? My only
> >concern
> >> would be that the FR4 would tend to insulate the flex from the bottom
> >heated
> >> roller. It may look okay but may manifest itself as poor line definition
> >> when you come to develop / etch.
> >>
> >> I've used a material called "Duofoil" in the past as a rigidiser for very
> >> thin flex (can't remember who makes it). Basically it's just a thin Al
> >sheet
> >> (normally used in stack make-ups for laminating flex circuits).
> >>
> >> Martin
> >>
> >> ===== Original Message from [log in to unmask] (TechNet E-Mail Forum.) at
> >> 27/09/00 16:18
> >> >Martin and Bareboard,
> >> >
> >> >Thanks for the replies.
> >> >
> >> >We taped the flex to some 31 mil FR-4, ran it through the laminator and
> >it
> >> >worked!
> >> >
> >> >Now, I'll order some pressure sensitive film for the next time.
> >> >
> >> >Hans
> >> >
> >> >
> >> >-----Original Message-----
> >> >From: [log in to unmask] [mailto:[log in to unmask]]
> >> >Sent: Tuesday, September 26, 2000 2:33 PM
> >> >To: [log in to unmask]; [log in to unmask]
> >> >Subject: Re: [TN] Flex Wrinkling during Hot Roll Photo Resist Lamination
> >> >
> >> >
> >> >A pressure variation from one end of the roller to the other would be my
> >> >guess.
> >> >Just had the same problem. Found one of the idler gears in the machine
> >had
> >> >spit out a key and was slightly out of alignment, which was causing the
> >> >roller to apply uneven pressure across the panel.
> >> >
> >> >##############################################################
> >> >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
> >> >##############################################################
> >> >To subscribe/unsubscribe, send a message to [log in to unmask] with
> >following
> >> >text in
> >> >the body:
> >> >To subscribe:   SUBSCRIBE TECHNET <your full name>
> >> >To unsubscribe:   SIGNOFF TECHNET
> >> >##############################################################
> >> >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> >additional
> >> >information.
> >> >If you need assistance - contact Keach Sasamori at [log in to unmask] or
> >> >847-509-9700 ext.5315
> >> >##############################################################
> >>
> >> ##############################################################
> >> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
> >> ##############################################################
> >> To subscribe/unsubscribe, send a message to [log in to unmask] with
> >following text in
> >> the body:
> >> To subscribe:   SUBSCRIBE TECHNET <your full name>
> >> To unsubscribe:   SIGNOFF TECHNET
> >> ##############################################################
> >> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> >additional
> >> information.
> >> If you need assistance - contact Keach Sasamori at [log in to unmask] or
> >> 847-509-9700 ext.5315
> >> ##############################################################
> >
> >##############################################################
> >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
> >##############################################################
> >To subscribe/unsubscribe, send a message to [log in to unmask] with following
> >text in
> >the body:
> >To subscribe:   SUBSCRIBE TECHNET <your full name>
> >To unsubscribe:   SIGNOFF TECHNET
> >##############################################################
> >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
> >information.
> >If you need assistance - contact Keach Sasamori at [log in to unmask] or
> >847-509-9700 ext.5315
> >##############################################################
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
> the body:
> To subscribe:   SUBSCRIBE TECHNET <your full name>
> To unsubscribe:   SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
> information.
> If you need assistance - contact Keach Sasamori at [log in to unmask] or
> 847-509-9700 ext.5315
> ##############################################################

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################