synthetic corks

[jgmillr1]

, i.e. putting a crease in synthetic corks that causes the bottled to leak if you put them on their side.

I had EXACTLY this same problem with an Italian floor corker and synthetic corks. Solved it by going back to micro agglomerated corks.

It taught me that the synthetic corks are not as robust at bouncing back from compression and made me question their long term effectiveness.

 

[mainshipfred]

Just went on Amazon to look for small count packs of Normacorcs but it doesn't tell you which ones you are getting. If you want to make sure you get Reserva, 900s or the Greens line you have to buy 1000.

 

[winemaker81]

It taught me that the synthetic corks are not as robust at bouncing back from compression and made me question their long term effectiveness.

The photo I posted on the last page of this thread tends to confirm the lack of "springiness".

However -- so far the Nomacorcs are doing fine. The company has been producing corks since 1999 and is used by a lot of commercial wineries, so my concern is lessened.

Just went on Amazon to look for small count packs of Normacorcs but it doesn't tell you which ones you are getting. If you want to make sure you get Reserva, 900s or the Greens line you have to buy 1000.

I purchased 100 count bags of Nomacorcs from Midwest Supply via Amazon. In November 2020 I contacted Midwest, asking what grade the corks are, and received a quick reply that said they are Nomacorc Select 900s. This was discussed in November in this thread:

Nomacorc 1 1/2 vs 1 3/4

Other than a quarter of an inch what is the difference between the Nomacorc 1 1/2" and 1 3/4". I am looking for something that will store my wine 10 years.

www.winemakingtalk.com

I checked the Nomacorc site and found the data sheet on the Select Green corks, which lists models 100, 300, and 500 which are good for 15, 10, and 8 years respectively.

https://corksupply.com/assets/Uploads/Nomacorc-SelectGreen-sellsheet-EN-US-Mid.pdf

As I reported in the previous thread, the Select 900 series is supposed to replace the Classic series, which is good up to 5 years.

https://corksupply.com/assets/Uploads/SellSheet-Nomacorc-ClassicGreen-LOW-OTR-ENUS.pdf

Most vendors on Amazon appear to sell the #9 x 1.5" 900 series. I suspect that for most people, a 5+ year lifespan is sufficient. Most of the wine I make will be consumed by the 5 year mark. If I notice the corks or wine degrading, I'll recork whatever is left.

For legal reasons, Nomacorc probably under-reports the lifespan of their corks, so I expect the 900's will satisfy my needs.

BTW -- I never received a reply from Nomacorc when I contacted them in November. Not that I expected a reply.

 

[winemaker81]

I just had to make one more search, which proved very fruitful. Cork Supply doesn't own Nomacorc, they're business partners, and Nomacorc is no longer a stand-alone company, it's part of VinVentions, and the Nomacorc product is one of many products they produce. My guess is the Cork Supply and Nomacorc sites are not supported or updated, but the VinVentions site is.View attachment 70467

Nomacorc - PlantCorc

Vinvention's Nomacorc Green Line is a plant-based wine closure derived from sustainable, renewable sugarcane-based raw materials. Learn more.

us.vinventions.com

Click the Try It button to get their configurator, which walks through the customer needs to identify what product fit those needs. Oddly enough, the Select 900 is in the Traditional line, NOT the Select line. The information presented during the selection of the cork matches the previously posted information -- the cork is rated for up to 5 years.

For fun, I uploaded my grape warrior avatar to see what it would look like. I actually like it!

The next step is to click Contact Us for prices .... which I'm sure will make my heart skip -- not the per-cork price, but the minimum quantity!

EDIT: I tried clicking Contact Us -- a form was displayed asking person name, winery name, # cases produced per year. I didn't continue as an answer of "30 cases" probably would not impress them ....

But if the price wasn't too bad, I'd order 1,000. It would take a few years to use 'em, but that's ok!

 

[hounddawg]

I just went back to my list on my Amazon account, it says Reserva wine closure 47 x 23.5 for wines up to 25 years, 1000 lot $295
i'm going to look at where i order my select 900 selects at
Dawg

 

[hounddawg]

hum now all my select 900's just says for wines over 2 years, but i got some 6 year old put back with both Flor and nomacroc 900 select, laying side by side I open one of each , each year, both still the same as far as i can tell
Dawg

 

[hounddawg]

I had EXACTLY this same problem with an Italian floor corker and synthetic corks. Solved it by going back to micro agglomerated corks.

It taught me that the synthetic corks are not as robust at bouncing back from compression and made me question their long term effectiveness.

what brand of synthetic corks did you use?
Dawg

 

[jgmillr1]

what brand of synthetic corks did you use?
Dawg

I looked back through my email and order history and found that they were Nomacorc Select. I had this issue in around 2014, so it's been a while.

 

[Etxcav8]

I have been using a Portuguese floor corker for several years and I’m into my second 1000 batch of nomacorc corks and never had a bottle leak until recently. I had two leaking bottles, pulled the corks and found the crease in the side of the cork as you mentioned. I activated the lever several times without a bottle or cork and found that one of the cork compressors was not returning to it’s rest position. I took it apart, cleaned the rust and dried sodium metabisulpfate, put back together and works like new again. FWIW
Ed T.

 

[Wine Lab]

Thanks for all the responses. I noticed when you go to buy the 1000 pack of Normacorc 900 Selects on Amazon.ca, the supplier, Midwest Supplies, notes that "Note: We recommend using the Gilda Single lever corker with these corks because while some Portuguese or Italian floor corkers may work without problems, there is also a chance that the cork will be scored as it is inserted into the bottle, causing leaks". That seems to be the consensus of this forum too, and that is most people have used their Portuguese or Italian or Ferrari floor corkers with brass, chrome or thermoplastic jaws using synthetic corks for years and have had no problems, but there were some that definitely had problems with creasing using synthetic corks and the reason why is not that clear.

Has anyone had any experience with these Chinese made stainless bench corkers available on Amazon, pic below, and if so, have you used synthetic corks with them? These do not have a compressible 4 jaw sliding iris system like most floor corkers but rather just a simple Stainless or POM guide in which you put the cork into and a handle with a plunger forces the cork through the guide into the bottle. On the surface, it would seem less likely to mark or damage the cork during compression, but I have no idea if they work well and work well with synthetic corks. Any thoughts on this corker would be appreciated.

 

[bstnh1]

I have no idea how well these work. But it looks like using this would be a slow, cumbersome operation.

 

[hounddawg]

it looks like it'd wear your arm out,,,
Dawg

 

[winemaker81]

I looked at the pictures of the Chinese corker on Amazon. It appears to work like a double-lever corker, using a compression cone that rests on the bottle. The plunger forces the cork through the cone, compressing it smaller than the inside diameter of the bottle neck.

Personally, I'd not buy one. First, my confidence in any hardware coming out of China is very low, due to experiences with very shoddy materials and workmanship. Beyond that, I don't expect it to work any better than a double-level corker and it's ~4 times the price. YMMV