Victor,
Could it be an inclusion in the PI?
And,
We do occasionally see voids in Polyimide films.
Chuck
Charles W. Brummer | 3M Manufacturing Engineer
3M Electronic Solutions Division
3M Canoga Park, 8357 Canoga Ave. | Canoga Park, CA 91304
Office: 818 734 4930
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From: <[log in to unmask]>
To: <[log in to unmask]>, <[log in to unmask]>
Cc: <[log in to unmask]>
Date: 08/17/2015 10:00 AM
Subject: [EXTERNAL] RE: Re: [TN] Pros & Cons om laminate VOIDS
Chuck,
Yes, It does appear to be an FPC Product, Rigid Flex assembly. The
cross section revealed an unusual layer stack with different shades in the
laminate. Some with glass bundles and others without glass. The large
voids appear to be concentrated on the layers with non-glass laminate
regions. Perhaps a polyimide layer. I don?t have the vendor stack up
information, thickness nor material construction.
Victor,
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Monday, August 17, 2015 11:28 AM
To: TechNet E-Mail Forum; Hernandez, Victor G
Subject: Re: Re: [TN] Pros & Cons om laminate VOIDS
And,
Is this a flex circuit? What is the construction?
I don't see any glass fiber and the layers appear to be connected by an
adhesive.
I think more information is required. It does appear to be a long way
from the patients heart.
Chuck
Charles W. Brummer | 3M Manufacturing Engineer
3M Electronic Solutions Division
3M Canoga Park, 8357 Canoga Ave. | Canoga Park, CA 91304
Office: 818 734 4930
[log in to unmask] | www.3M.com
This message (including any attachments) may contain material, non-public
information or proprietary information and is for the intended recipients
only. If you are not the intended recipient, you should notify the sender
and delete this message. Any disclosure, copying, or use of this
information is strictly prohibited and may subject you to legal liability.
From: "Victor Hernandez" <[log in to unmask]>
To: <[log in to unmask]>
Date: 08/17/2015 04:19 AM
Subject: [EXTERNAL] Re: [TN] Pros & Cons om laminate VOIDS
Sent by: TechNet <[log in to unmask]>
How can on call it an anomaly/defect if one is unable to discern the
anomaly/defect.
Victor,
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wayne Thayer
Sent: Friday, August 14, 2015 6:05 PM
To: [log in to unmask]
Subject: Re: [TN] Pros & Cons om laminate VOIDS
With this size range, I would be concerned. Nice sections!
Wayne
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Friday, August 14, 2015 5:26 PM
To: [log in to unmask]
Subject: Re: [TN] Pros & Cons om laminate VOIDS
Hi Victor,
Here you go:
http://stevezeva.homestead.com/Laminate_voids.pdf
Steve
On Fri, Aug 14, 2015 at 12:23 PM, Victor Hernandez <
[log in to unmask]> wrote:
> Fellow TechNetters:
>
> What are the Pros N Cons with LF laminate voids. Want to hear what
> the community thinks. I will upload photos to Steve Gregory shortly.
>
> Victor,
>
> Steve Gregory
>
> ______________________________________________________________________
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