Industrial Textiles Still Need Technical And Regulatory Support For Environmental Protection.

< p > < a href= "http://www.91se91.com/news/index_c.asp > > dyeing and finishing process < /a > is the key process for producing eco industrial textiles.

In the process of dyeing and finishing of industrial products, harmful substances mainly include soluble metal salts, formaldehyde, pentachlorophenol, carcinogenic dyes, etc.

Therefore, the ecological dyeing and finishing of nonwovens is an important research direction in the future production of industrial textiles, and is also an inevitable choice to ensure the safety of production and use of industrial textiles.

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< p > < strong > it is very difficult to disable auxiliaries < /strong > < /p > like forbidden dyes.

Members of the European Union, including Germany, are discussing the prohibition of some auxiliaries. However, up to now, no banned dyes have been put forward to ban varieties of dyeing and finishing auxiliaries. This is mainly due to the opacity of the molecular structure and the compounding ingredients of dyeing and finishing auxiliaries, which increases the difficulty of disabling auxiliaries. P

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< p > Austria, Germany, Switzerland and other European countries, 13 research institutions, "a href=" http://www.91se91.com/news/index_q.asp "international ecological textiles research and Inspection Association < /a >, have been committed to the development of eco industrial products.

Gavin, the head of the association, said that the target of textile products used in the ecological industry is not harmful to human health when used, and that the harmful substances in textiles should be reasonably defined and the corresponding quality control system should be established, such as the prohibition of some dyeing and finishing auxiliaries and the further implementation of the concept of "green additives".

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< p > at present, the EU member states including Germany are discussing the prohibition of some auxiliaries, but so far, no banned dyes have been put forward to ban the varieties of dyeing and finishing auxiliaries. This is mainly due to the opacity of the molecular structure and the compounding ingredients of dyeing and finishing auxiliaries, which increases the difficulty of disabling auxiliaries.

Although there are definite boundaries in some projects, such as technical labeling of eco industrial textiles specified in Oeko-Tex Standard 100, most of the projects do not have clear standards, and can only be compared with other countries' regulations and practices, which is relatively vague.

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< p > in the field of commodity circulation, some standards of industrial textiles are embodied by quality labels.

With the enhancement of people's awareness of environmental protection, the ecology and toxicology of labelling of industrial textiles will attract more and more attention.

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< p > < strong > biodegradable dispersant reduces formaldehyde pollution < /strong > /p >

< p > a biodegradable dispersant, known as acid resistant yellow formaldehyde condensate, is not affected by formaldehyde limitation. Its biodegradability is very strong. Some 70%~75% parts can be biodegraded. This will bring positive and positive effects on the protection of the ecological environment.

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< p > non-woven fabric finished with formaldehyde flavor crosslinking agent will release some of the uncross-linked or hydrolyzed free formaldehyde during the use and damage human health.

Although the regulations and standards of various countries have strictly restricted the content of free formaldehyde in products, for example, the formaldehyde content of clothing and textiles that contact the skin can not exceed 75mg/kg. The formaldehyde content of clothing and textiles and textile industrial fabrics that do not directly contact the skin can not exceed 300mg/kg, but the effect is still not ideal.

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< p > formaldehyde is used as a reactant to improve the durability of dyeing and finishing auxiliaries on nonwoven fabrics. However, the free formaldehyde and formaldehyde released from dyeing and finishing auxiliaries cause excessive formaldehyde content on the nonwoven fabric, resulting in formaldehyde content exceeding the limit specified in the relevant regulations.

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P, a company that is working with the International Association for the study and inspection of eco textiles, announced that the company is studying a biodegradable dispersant called acid resistant yellow formaldehyde condensate.

Such products such as NNO and MF also contain a small amount of free formaldehyde, but its molecular structure is not as active as the N- hydroxymethyl group. It has no reversible reaction. When it is synthesized, it does not require excessive formaldehyde to maintain the reaction equilibrium. Moreover, the C-C bond bond is large and it is difficult to hydrolyze and release formaldehyde.

In this sense, this kind of dispersant is not affected by formaldehyde limitation, and its biodegradability is very strong. About 70%~75% of the dispersant can be biodegraded, which will bring a positive positive impact on the protection of the ecological environment.

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< p > < strong > revised standard to strengthen the monitoring range of heavy metals < /strong > /p >

In the 2013 revision process, in addition to the 10 heavy metals and ions stipulated in Oeko-Tex Standard 100, the children's toys, daily consumer goods and new packaging materials will be repositioned, and barium and selenium will also be included in the monitoring range. P

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< p > industrial chemicals, especially chemicals used in Nonwovens processing, have certain effects on the ecological environment of textiles.

Therefore, the harmful metals in the processing of industrial textiles, especially the protective products, must be < a href= "http://www.91se91.com/news/index_s.asp" > limit control < /a >.

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< p > in the 2000 Revision of Oeko-Tex Standard 100, the determination of heavy metals can be tested by means of ICP, AAS or UV-VIS according to the test conditions and regulations.

However, in the process of revising in 2013, Gavin, director of the International Association for Eco textiles research and inspection, said that apart from the 10 heavy metals and ions stipulated in Oeko-Tex Standard 100, new toys and daily consumer goods and new packaging materials will be repositioned, and barium and selenium will also be included in the monitoring area.

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