CN101812554A - Process for reducing free formaldehyde of fur products - Google Patents
Process for reducing free formaldehyde of fur products Download PDFInfo
- Publication number
- CN101812554A CN101812554A CN200910227897A CN200910227897A CN101812554A CN 101812554 A CN101812554 A CN 101812554A CN 200910227897 A CN200910227897 A CN 200910227897A CN 200910227897 A CN200910227897 A CN 200910227897A CN 101812554 A CN101812554 A CN 101812554A
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- formaldehyde
- fur
- free formaldehyde
- fur coat
- physical methods
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses a process for reducing free formaldehyde of fur products, which is characterized by adopting the following steps: 1) soaking fur with hydrogen peroxide solution; 2) reducing the formaldehyde ions in the fur by ozone; 3) adding a small amount of ammonia salt in the tanning process; 4) spraying a formaldehyde scavenger; and 5) treating by combining physical methods of water washing, drying and the like. According to the characteristic that the formaldehyde has active chemical properties, the invention reduces the content of the free formaldehyde in the product by chemical methods of oxidization, reduction, ammonium salt combined treatment, a formaldehyde scavenger process and the like, and simultaneously the physical methods of water washing, drying and the like are combined for treatment. For the fur which needs to be oxidized and bleached, by screening the tannin for substituting the formaldehyde, the pollution of the formaldehyde is reduced, and the product can reach the standards.
Description
Affiliated technical field
The invention belongs to a kind of treatment process of animal skin, relate to a kind of process for reducing free formaldehyde of fur products particularly.
Background technology
At present, in the fur products course of processing, formaldehyde is widely used as reagent, and the scope of its use comprises tanning agent, hair fixing agent, laking agent, water-resisting agent, softening agent, tackiness agent etc., and involvement aspect is very wide.Because the free formaldehyde of these auxiliary agents self discharges, and causes the formaldehyde that contains on a lot of fur productses to be difficult to be lower than the ultimate value of regulation.The product that contains formaldehyde in people's dress and use, can disengage free formaldehyde gradually, causes respiratory inflammation and skin inflammation by human respiratory tract, skin contact, and also can produce eyes stimulates.The fur coat kind that China's output is bigger as otter rabbit, raccoon fur, raw fox skin etc., adopts the formaldehyde tanning in the taw process in the early stage, after printing, dye in the later stage, and free formaldehyde severe overweight often.If can not solve the free formaldehyde problem of fur products, hinder one barrier that Chinese fur products goes to the world with becoming gradually.
Summary of the invention
The present invention's purpose is to overcome the above-mentioned deficiency of prior art, and a kind of process for reducing free formaldehyde of fur products is provided, and it makes all products can accomplish that all free formaldehyde is up to standard by processing.
For realizing above-mentioned purpose, process for reducing free formaldehyde of fur products of the present invention is taked following steps: 1) fur coat is soaked with superoxol;
2) utilize ozone that the formaldehyde ion in the fur coat is reduced processing;
3) in tannery, add little ammonia salt;
4) spraying formaldehyde-trapping agent;
5) handle in conjunction with physical methods such as washing, oven dry.
The present invention takes technique scheme, have following beneficial effect: the present invention is according to the more active characteristics of the chemical property of formaldehyde, adopt oxidation, reduction, ammonium salt to reduce the content of free formaldehyde in the product in conjunction with chemical processes such as processings, formaldehyde-trapping agent operations, physical methods such as combination washing simultaneously, oven dry are handled.For needing oxidation to float the hide of look, the tannin by screening replacement formaldehyde reduces formaldehyde pollution, makes product up to standard.Technology of the present invention is applicable to the production of most of kinds of existing plant produced.
Embodiment
Below in conjunction with embodiment the present invention is introduced.
Embodiment
Process for reducing free formaldehyde of fur products of the present invention is taked following steps:
1) fur coat was soaked 2 hours with 3%～5% superoxol, by formaldehyde excessive in the oxidation removal fur coat;
2) utilize ozone that the formaldehyde ion in the fur coat is handled through reduction, eliminate the free formaldehyde in the fur coat;
3) utilize the volatilization of ammonia salt directly to remove the principle of formaldehyde, in tannery, add little ammonia salt, formaldehyde pollution is reduced;
4) spraying 10g/m
2Formaldehyde-trapping agent, and generate stable polymer substance behind the formaldehyde generation chemical reaction, formaldehyde no longer discharges;
5) handle in conjunction with physical methods such as washing, oven dry.
Because the hide source is complicated, assortment are more, can be according to the process condition of each veriety, and the processing of classifying, the technology that design is fit to.Adopt chemical processes such as oxidation, reduction, ammonium salt combination, formaldehyde-trapping agent to reduce the content of free formaldehyde in the product, handle in conjunction with physical methods such as washing, oven dry simultaneously;
For reducing formaldehyde, in some operations, as float the place that needs in the productions at present such as look, boiling hot broad wool with formaldehyde, alternative by other chemical as far as possible.
Claims (2)
1. process for reducing free formaldehyde of fur products is characterized in that it takes following steps: 1) fur coat is soaked with superoxol;
2) utilize ozone that the formaldehyde ion in the fur coat is reduced processing;
3) in tannery, add little ammonia salt;
4) spraying formaldehyde-trapping agent;
5) handle in conjunction with physical methods such as washing, oven dry.
2. a kind of process for reducing free formaldehyde of fur products according to claim 1 is characterized in that it takes following steps: 1) fur coat was soaked 2 hours with 3%～5% superoxol, by formaldehyde excessive in the oxidation removal fur coat;
2) utilize ozone that the formaldehyde ion in the fur coat is handled through reduction, eliminate the free formaldehyde in the fur coat;
3) in tannery, add little ammonia salt;
4) spraying 10g/m
2Formaldehyde-trapping agent, and generate stable polymer substance behind the formaldehyde generation chemical reaction, formaldehyde no longer discharges;
5) handle in conjunction with physical methods such as washing, oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910227897A CN101812554A (en) | 2009-12-25 | 2009-12-25 | Process for reducing free formaldehyde of fur products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910227897A CN101812554A (en) | 2009-12-25 | 2009-12-25 | Process for reducing free formaldehyde of fur products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101812554A true CN101812554A (en) | 2010-08-25 |
Family
ID=42619922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910227897A Pending CN101812554A (en) | 2009-12-25 | 2009-12-25 | Process for reducing free formaldehyde of fur products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101812554A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191334A (en) * | 2016-07-19 | 2016-12-07 | 内蒙古自治区产品质量检验研究院 | A kind of reduce or remove the method for free formaldehyde in fur coat or fur products fleece |
| WO2021068537A1 (en) * | 2019-10-08 | 2021-04-15 | 磐安县亿晖科技发展有限公司 | Method for preparing leather and textile fabric having formaldehyde and unpleasant odor removal function |
-
2009
- 2009-12-25 CN CN200910227897A patent/CN101812554A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191334A (en) * | 2016-07-19 | 2016-12-07 | 内蒙古自治区产品质量检验研究院 | A kind of reduce or remove the method for free formaldehyde in fur coat or fur products fleece |
| CN106191334B (en) * | 2016-07-19 | 2018-04-13 | 内蒙古自治区产品质量检验研究院 | A kind of method reduced or remove free formaldehyde in suede or fur products fleece |
| WO2021068537A1 (en) * | 2019-10-08 | 2021-04-15 | 磐安县亿晖科技发展有限公司 | Method for preparing leather and textile fabric having formaldehyde and unpleasant odor removal function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100825 |