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vacuum storage bags to store TT rackets

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blahness View Drop Down
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    Posted: 07/27/2022 at 9:23pm
Wanted to test this theory out.

Since rubber degradation has a lot to do with oxidation, why not just remove the source of oxygen and simply store it in a vacuum bag?

Has anyone tried this before?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stiltt Quote  Post ReplyReply Direct Link To This Post Posted: 07/27/2022 at 10:31pm
I didn't but this is a very good idea for the people seldom playing. For those who train, their play may destroy the rubbers before any oxidation has a chance to kick in however the price of a vacuum bag is nothing compared to what we spend on rubbers so why not since the benefit is not null and the routine is easy to install?

You may go further and introduce an anti pressure box maybe? (btw did that thing ever work LOL)


Edited by stiltt - 07/28/2022 at 5:08am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thethinker Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 1:57am
I had some rubbers at the start of covid put away and they didn't do too well (small amount of oxidation). Perhaps I should have gotten fresh clean bags. Also some rubbers shrunk a lot. So the bags don't help that part. I don't know what to do with small rubbers that can't be play.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote blahness Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 2:39am
Originally posted by thethinker thethinker wrote:

I had some rubbers at the start of covid put away and they didn't do too well (small amount of oxidation). Perhaps I should have gotten fresh clean bags. Also some rubbers shrunk a lot. So the bags don't help that part. I don't know what to do with small rubbers that can't be play.

Were they all vacuum bags?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zeio Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 5:49am
Storing porous sponge in a vacuum is not a good idea because of permeation.
Viscaria FL - 91g
+ Neo H3 2.15 Blk - 44.5g(55.3g uncut bare)
+ Hexer HD 2.1 Red - 49.3g(68.5g 〃 〃)
= 184.8g
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Post Options Post Options   Thanks (0) Thanks(0)   Quote haggisv Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 6:04am
Adhesive protection sheets work very well and are simpler to use.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thethinker Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 6:20am
Only used ziploc bags.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote blahness Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 6:57am
Originally posted by zeio zeio wrote:

Storing porous sponge in a vacuum is not a good idea because of permeation.

Could you elaborate? I'm not too sure if I understand....
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Post Options Post Options   Thanks (0) Thanks(0)   Quote blahness Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 6:58am
Originally posted by haggisv haggisv wrote:

Adhesive protection sheets work very well and are simpler to use.

These protect the topsheet, but doesn't prevent the sponge itself from hardening. I have like a 4 mth old D09c which is becoming close to unplayable fml...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zeio Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 12:10pm
To keep it short, the pressure difference will cause the gas within the cells to escape to the void between the topsheet and sponge at a faster rate than it would if it were stored at atmospheric pressure.
Viscaria FL - 91g
+ Neo H3 2.15 Blk - 44.5g(55.3g uncut bare)
+ Hexer HD 2.1 Red - 49.3g(68.5g 〃 〃)
= 184.8g
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zeio Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 1:22pm
Viscaria FL - 91g
+ Neo H3 2.15 Blk - 44.5g(55.3g uncut bare)
+ Hexer HD 2.1 Red - 49.3g(68.5g 〃 〃)
= 184.8g
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Baal Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 2:55pm
I can't think of a practical method to keep your rubber from oxidizing.  Most people don't have a convenient source of nitrogen or argon at home.  I think zeio is right that a vacuum would deflate the sponge, but maybe you only need a slight vacuum?  Maybe there is a middle ground somewhere?

Edited by Baal - 07/28/2022 at 2:56pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tom Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 5:36pm
Originally posted by blahness blahness wrote:

Originally posted by haggisv haggisv wrote:

Adhesive protection sheets work very well and are simpler to use.

These protect the topsheet, but doesn't prevent the sponge itself from hardening. I have like a 4 mth old D09c which is becoming close to unplayable fml...
4 mos for a premium (priced) product?  you must have money to burn.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote stiltt Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 5:37pm
I like that guy on fb and yt, it's really cool he can make a living doing this.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote blahness Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 5:52pm
Originally posted by tom tom wrote:

Originally posted by blahness blahness wrote:

Originally posted by haggisv haggisv wrote:

Adhesive protection sheets work very well and are simpler to use.

These protect the topsheet, but doesn't prevent the sponge itself from hardening. I have like a 4 mth old D09c which is becoming close to unplayable fml...
4 mos for a premium (priced) product?  you must have money to burn.

Maybe some boosting will soften it up enough? It just doesn't produce that insane spin it did for the 1st 3 months....
I have a decent job so I don't mind that much Tongue
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Post Options Post Options   Thanks (0) Thanks(0)   Quote blahness Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 5:54pm
Originally posted by zeio zeio wrote:

To keep it short, the pressure difference will cause the gas within the cells to escape to the void between the topsheet and sponge at a faster rate than it would if it were stored at atmospheric pressure.

Would this ruin the rubber though, isn't this a reversible process? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote haggisv Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 7:59pm
Originally posted by blahness blahness wrote:

Originally posted by haggisv haggisv wrote:

Adhesive protection sheets work very well and are simpler to use.

These protect the topsheet, but doesn't prevent the sponge itself from hardening. I have like a 4 mth old D09c which is becoming close to unplayable fml...

Yes you're right, but in my experience the degradation of the topsheet is usually far worse than the sponge. When you buy a new rubber, most are in a plastic packet that's got a few holes in it, so I can't see how degradation due to oxidation can happen that quickly.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Baal Quote  Post ReplyReply Direct Link To This Post Posted: 07/28/2022 at 9:06pm
Originally posted by blahness blahness wrote:

Originally posted by zeio zeio wrote:

To keep it short, the pressure difference will cause the gas within the cells to escape to the void between the topsheet and sponge at a faster rate than it would if it were stored at atmospheric pressure.

Would this ruin the rubber though, isn't this a reversible process? 

Possibly irreversible if it damaged the walls of the pores in the sponge?
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