Oriental Rug washing in Iran
- Thread starter Sergio
- Start date
cleanking
Member
They are used both in the finishing washing of new rugs to tone down color and to control/correct dye migration during a normal wash. It is normal practice throughout the industry to use both sodium hydrosulfite and chlorine bleach.
-This person told me that chlorine is used to give brightness to the colors.It's correct?
-Do they have to be used together?
-Dwell time?
-Diluition of sodium hydrosulfite and chlorine bleach?
Thanks
cleanking
Member
Hydrosulfite can be used alone however chlorine bleach is neutralized by the hydrosulfite (among other possible neutralizers). So if you are using chlorine bleach you can follow up with hydrosulfite once desired results are reached to stop the chlorine bleaching effect. Hydrosulfite is neutralized by cold water and rinsing.
Hydrosulfite can be mixed at many dilutions however a good starting point is roughly .5oz to 1 gallon of hot water. Baking soda can be added to lessen the strong odor, usually 1/3 of how much hydrosulfite was used will do the trick. Working with hydrosulfite without baking soda is almost unbearable, be sure to have plenty of ventilation during and after use.
For bleach generally a starting point is a cup of 6% available chlorine bleach to 5 gallons of warm water, followed by a dilution of hydrosulfite to stop the reaction.
We find that a light hydrosulfite strip can brighten colors, we do not use very much chlorine bleach so I cannot speak to it's uses in this way.
Others may chime in to fill in the gaps in my explanations here, this is just as I understand it.
Hydrosulfite can be mixed at many dilutions however a good starting point is roughly .5oz to 1 gallon of hot water. Baking soda can be added to lessen the strong odor, usually 1/3 of how much hydrosulfite was used will do the trick. Working with hydrosulfite without baking soda is almost unbearable, be sure to have plenty of ventilation during and after use.
For bleach generally a starting point is a cup of 6% available chlorine bleach to 5 gallons of warm water, followed by a dilution of hydrosulfite to stop the reaction.
We find that a light hydrosulfite strip can brighten colors, we do not use very much chlorine bleach so I cannot speak to it's uses in this way.
Others may chime in to fill in the gaps in my explanations here, this is just as I understand it.
cleanking
Member
It should be stated that the dilutions and chemicals mentioned here only apply to most wool on cotton rugs.
Dye used for synthetic, viscose, and silk fibers will respond very differently to these treatments, many times in undesirable/irreversible ways.
Dye used for synthetic, viscose, and silk fibers will respond very differently to these treatments, many times in undesirable/irreversible ways.
cleanking
Member
Dwell time depends how much color you have to remove vs how much adverse effects you're ok with. This is less science and more art at this point. Try it out on some scraps you own first. It can take a while to get the hang of how these chemicals work.
Mikey P
Administrator
I feel...
So dirty.
So dirty.
GREAT!
approximately between 1 and 5 minutes per chemical product?
Can you post a link on chlorine 6%? (to be sure that we are talking about the same chemical product
)
cleanking
Member
chlorine bleach is different from sodium hypochlorite?
Last edited:
Tom Forsythe
Member
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- Dec 19, 2006
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They would learn the process from experienced rug washers not on their own. Knowledge is passed on from one generation to another. I am not sure how many rugs you would ruin before you had learned the proper procedures along with the chemistry. Be wary of trying this on your own!!
cleanking
Member
There's nothing mystical about trial and error, how do you think it was learned originally? Buy some crappy rugs and play with it, find the limits and take notes along the way. I'd be weary of a rug washer that isn't willing to figure out how to use these chemicals, there's a much higher chance they're the ones ruining the rugs.
cleanking
Member
Dichlor is generally what is used in washing rugs. Powdered bleach is generally a more stable chemical than liquid bleach and is easier to neutralize from my understanding.
Tom Forsythe
Member
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If this was a forum for experienced rug washers, then I might agree with details of this discussion. We purposely put on some product labels not recommended for wool as we are talking to a mass audience. In certain rugs and certain situations I will use what is not recommended for wool. Mikeysboards audience is much more than those who post here. I shudder thinking about the masses (many lurk here) that I have talked with over the years experimenting with 12% hydrogen peroxide let alone chlorine bleach and hydrosulfite (one nasty chemical that I have used with success) on wool rugs. Some knowledge should be held closer to the vest and shared with those who can apply it safely and effectively.
Friends, I have been doing this job for about 4 years. I wash about 300 carpets in a year (90% oriental rugs - 10% syntethic carpets). My knowledge grows year by year . Thanks to the advice of the friends of this forum, the result of the washing has been constantly improved, so the usefulness of this forum is undoubted.
This forum is a starting point, not a point of arrival, in the middle there are many practical tests on cavy carpets.
I need details as a starting point for testing
thank you all for the advice
sorry for my bad english
This forum is a starting point, not a point of arrival, in the middle there are many practical tests on cavy carpets.
I need details as a starting point for testing
thank you all for the advice
sorry for my bad english
Tom Forsythe
Member
- Joined
- Dec 19, 2006
- Messages
- 486
Your bad English is better than my no second language at all. Your writing is better than some first year American college students that I had to read 40 years ago.
Google helps me. ahah
These 2 chemical products are samething?
https://associatedfuelsystems.com/product/zep-aztech-powdered-chlorine-bleach-145-lb-drum/
https://www.zep.co.uk/product/product.asp?EU_Product_code=EU25215&SubCat=250
These 2 chemical products are samething?
https://associatedfuelsystems.com/product/zep-aztech-powdered-chlorine-bleach-145-lb-drum/
https://www.zep.co.uk/product/product.asp?EU_Product_code=EU25215&SubCat=250
cleanking
Member
No they are not.
Could you help me in the search for the same chemical product in the EU, please?
I need your help because my English is not so good and because I do not know the chemical product
Thanks!!!!
I need to find this chemical product in EU for test it!
Can someone help me,please?
Can someone help me,please?
Hi,
chlorine bleach for oriental rug washing is sodium hypochlorite ?
During the washing process,
after washing with detergent, I can pour chlorine bleach on the carpet, dwell time some minutes, i can pour sodium hydrosulphite on the carpet, dwell time some minutes, rinse the carpet.
It's correct?
chlorine bleach for oriental rug washing is sodium hypochlorite ?
During the washing process,
after washing with detergent, I can pour chlorine bleach on the carpet, dwell time some minutes, i can pour sodium hydrosulphite on the carpet, dwell time some minutes, rinse the carpet.
It's correct?
cold,warm or hot water?
Tom Forsythe
Member
- Joined
- Dec 19, 2006
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- 486
Do not use chlorine bleach on wool period......
The Great Oz
Member
In the manufacturing process strong chlorine is used to mute colors and give a rug a patina of age. In these high concentrations chlorine bleach will remove dyes but also raise the cuticle of the wool fiber while turning it yellow. This step is typically followed by an acid rinse to reduce the yellowing and lay the cuticle back down. With repetition, the cuticles will break off and give the wool a silky look and feel, but the damaged wool then becomes extremely prone to staining when in use.
The place for dye stripping is in reviving rugs that have dye bleed from mishaps - rugs that otherwise would be ruined - not as a part of your cleaning process. If you see a high percentage of rugs that would otherwise be thrown away, you have a reason to learn how to strip dyes, and a ready supply of training material. It takes a little training and a great deal of trial and error observation to be good at this.
Good luck!
The place for dye stripping is in reviving rugs that have dye bleed from mishaps - rugs that otherwise would be ruined - not as a part of your cleaning process. If you see a high percentage of rugs that would otherwise be thrown away, you have a reason to learn how to strip dyes, and a ready supply of training material. It takes a little training and a great deal of trial and error observation to be good at this.
Good luck!
Tom Forsythe
Member
- Joined
- Dec 19, 2006
- Messages
- 486
There are a lot of things that you can use on rugs with expert guidance, training and experience. Answers in a public forum should be more definitive to prevent experimenting by those who do not have guidance, training and experience. I have seen issues from playing with chlorine bleach that I would not want to wish on anybody especially a cleaner learning to clean oriental rugs.
Trip Moses
IMOL
I wonder if rug washers on the other side of the pond have to deal with as much pet pee as we do?
The Great Oz
Member
Probably not. I don't think they're silly enough to believe that as "pet parents" their pets should be treated like pampered children.
I don't think they have emotional support pigs/alligators/emus either.
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