The European Commission for Standardization (CEN) is an organization officially recognized by the EU in accordance with directive 83/189/eec (procedures for providing information in the field of technical standards and regulations), and is specially responsible for the European Standardization Work in the fields other than electricians and telecommunications. CEN standard is an important basis for ISO to formulate international standards, and also a main basis for measuring the quality of products in the EU market.
The types of Cen standards are European standards (EN), technical specifications (TS), technical reports (TR), cen seminar agreements (CWA). European standards are one of the most effective standards in Cen. Countries must convert European standards into national standards and cancel the contrary ones. But the attribute of European standard is voluntary, that is, it is voluntary for the manufacturer, and the manufacturer can not comply with the European standards in the process of product manufacturing.
The European standard is numbered by standard code + serial number. If a standard is used by Member States, double numbering is used. For example, when used in the UK, it is expressed as BS EN 71:2003, in France NF en 71:2003, and in Federal Germany, it is DIN EN 71:2003.
EU countries are the cradle of eco textiles, and the standards of eco textiles are also an effective tool for EU to construct technical barriers. EU has implemented strict protection measures for textiles. Textile ecological problems have developed from the indicator system represented by the ban of dyes to environmental management based on the whole production and consumption process. The main contents of the project include the following aspects:
(1) Prohibition: it is prohibited to use azo dyes, other carcinogenic dyes, acetate fiber dyes that can cause human allergy, organic chlorine carrier used in dyeing, fire prevention treatment and anti microbial treatment AIDS, which can be decomposed into carcinogenic aromatic amines or carcinogenic.
(2) Limit provisions: heavy metals, pesticides, formaldehyde, preservatives, etc., in textiles.
(3) Color fastness: such as color fastness to friction, washing and sweat resistance.
(4) Main evaluation indexes: biodegradability, heavy metal index, organic chlorine content, biological toxicity, etc.
Textiles that meet the corresponding ecological standards can usually obtain corresponding textile environmental signs. Representative signs include eco label, Oeko tex100, milieuker, white swan, etc.