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WARNING! Destroyed foam found in longtime unused CD boxes.
Nessuno
post Mar 9 2013, 13:48
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I report this fact to warn all other fellows: today I opened a CD box of mine, one of the first I ripped back in about 2006 and likely never opened again since. It is a very old 4 CD jewel case box issued in 1985 by Archiv Production (actually I bought my copy brand new in 2004, but don't know the real build date) and had two foam sheets between opposite facing CDs to keep them firmly in place. Unfortunately by time the foam had somewhat disintegrated and glued to the CD surfaces in many a contact point.

I had accurately ripped FLAC copies of those CD (so no reason to lose my temper! wink.gif), nevertheless in polishing them I tried to be not too forceful for fear of scratching the upper surface where the actual data are written, so some little debris and spots of melted foam could still be seen. I tried a new ripping test run and AR verification went all ok.

This post has been edited by Nessuno: Mar 9 2013, 13:51


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2Bdecided
post Mar 11 2013, 10:30
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Thanks for the warning. Some early Now! CDs shipped like this and I shall go and check them.

Cheers,
David.
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2Bdecided
post Mar 13 2013, 12:34
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QUOTE (2Bdecided @ Mar 11 2013, 09:30) *
Thanks for the warning. Some early Now! CDs shipped like this and I shall go and check them.
Now 11 still fine (though foam is discoloured). Now 12 foam as good as new! (both from 1988).

(Good job, given the cost on Amazon.co.uk, and the lesser but still ridiculous prices they fetch on eBay - who says CDs are worthless?!).

I took the foam out, but kept it, given that these have entered collectable territory and are worth more with the foam(!)
(how did my teenage years get to be 25 years ago?)

Cheers,
David.
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Nessuno
post Mar 13 2013, 19:02
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QUOTE (2Bdecided @ Mar 13 2013, 12:34) *
Now 11 still fine (though foam is discoloured). Now 12 foam as good as new! (both from 1988).

I see you are from northern England, much colder than southern Italy (just to say: 15C here by now). Maybe this could have played some role. Also the quality of the foam: that one was of the lighter large cell type.


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2Bdecided
post Mar 14 2013, 11:45
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QUOTE (Nessuno @ Mar 13 2013, 18:02) *
I see you are from northern England, much colder than southern Italy
Oh the understatement! wink.gif The house has always been pretty warm though - but you have summer temperatures we can only dream of!

I wonder if all foam degrades in the end? Well, everything degrades in the end. I mean over decades, rather than centuries, maybe some of it happens to be "archival quality"? Degraded foam seems to plague old loudspeakers.

Worth checking though, so thank you for mentioning it. Some CDs react with the booklets themselves. I've had one (only one) where washing it caused the label to just fall off (still played). Generally though, I've had no problems with CDs at all, beyond occasional accidental damage.

Cheers,
David.
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Nessuno
post Mar 14 2013, 13:44
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QUOTE (2Bdecided @ Mar 14 2013, 11:45) *
you have summer temperatures we can only dream of!

To them I was referring: north of 30C for many hours a day in the summer (a dream that often turns to a nightmare, I tell you! wink.gif). Maybe if I had opened the box more often the foam degraded the same in the long term, but without sticking to the CDs.

QUOTE
Degraded foam seems to plague old loudspeakers.

You name it: I bought my Infinity speakers in 1990 and by 2001 woofer suspensions started to turn into dust. I had the foam replaced, maybe with better quality one because it seems to be still in good conditions (er... when was the last time I checked? better give a look, back home... unsure.gif )

QUOTE
Generally though, I've had no problems with CDs at all, beyond occasional accidental damage.

Neither I, this case apart. And this case itself confirms that long term storage is not only a question of save and forget...


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Posts in this topic
- Nessuno   WARNING! Destroyed foam found in longtime unused CD boxes.   Mar 9 2013, 13:48
- - Porcus   Tried to just soak the CD in water overnight?   Mar 9 2013, 15:29
|- - Soap   If the issue is foam degradation due to plasticize...   Mar 9 2013, 16:18
|- - Nessuno   Considered that I verified all discs are still in ...   Mar 9 2013, 19:58
- - 2Bdecided   Thanks for the warning. Some early Now! CDs sh...   Mar 11 2013, 10:30
|- - 2Bdecided   QUOTE (2Bdecided @ Mar 11 2013, 09:30) Th...   Mar 13 2013, 12:34
|- - julf   QUOTE (2Bdecided @ Mar 13 2013, 12:34) I ...   Mar 13 2013, 15:21
|- - Porcus   QUOTE (2Bdecided @ Mar 13 2013, 12:34) (h...   Mar 13 2013, 15:57
|- - Nessuno   QUOTE (2Bdecided @ Mar 13 2013, 12:34) No...   Mar 13 2013, 19:02
|- - 2Bdecided   QUOTE (Nessuno @ Mar 13 2013, 18:02) I se...   Mar 14 2013, 11:45
|- - Nessuno   QUOTE (2Bdecided @ Mar 14 2013, 11:45) yo...   Mar 14 2013, 13:44
- - cyberdux   QUOTE (Nessuno @ Mar 9 2013, 22:48) I rep...   Mar 11 2013, 21:56
- - pdq   When I was a teenager we didn't have stereo (o...   Mar 13 2013, 15:56
|- - bilbo   QUOTE (pdq @ Mar 13 2013, 09:56) When I w...   Mar 13 2013, 16:21
||- - Porcus   QUOTE (bilbo @ Mar 13 2013, 16:21) I stil...   Mar 13 2013, 20:43
||- - julf   QUOTE (bilbo @ Mar 13 2013, 16:21) I stil...   Mar 13 2013, 21:16
|- - db1989   QUOTE (pdq @ Mar 13 2013, 14:56) When I w...   Mar 13 2013, 17:44
- - Canar   You kids and your plastic media... ...be back in ...   Mar 13 2013, 16:52
|- - 2Bdecided   QUOTE (Canar @ Mar 13 2013, 15:52) You ki...   Mar 13 2013, 17:44
- - pdq   Two of the biggest factors in polymer degradation ...   Mar 14 2013, 13:25


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