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ISO 11721 纺织品 纤维素纺织品抗菌性的测定 - 抗菌产品质量控制体系 - 抗菌产业网-抗菌行业最具影响力门户网站
ISO 11721 纺织品 纤维素纺织品抗菌性的测定
时间：2018-12-11 17:53:18　来源：CIAA　点击量：
ISO 11721-1:2001 纺织品 纤维素纺织品抗菌性的测定 土埋试验 第1部分:防腐处理的评定
ISO 11721-1:2001 Textiles -- Determination of resistance of cellulose-containing textiles to micro-organisms -- Soil burial test -- Part 1: Assessment of rot-retardant finishing
Publication date : 2001-01
Technical Committee : ISO/TC 38 Textiles
ICS : 59.080.01 Textiles in general
Attention is drawn to the possibility that some of the elements of this part of ISO 11721 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 11721-1 was prepared by the European Committee for Standardization (CEN) in collaboration with ISO Technical Committee TC 38, Textiles, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
Throughout the text of this standard, read "...this European Standard..." to mean "...this International Standard...".
ISO 11721 consists of the following parts, under the general title Textiles — Determination of resistance of cellulose-containing textiles to micro-organisms — Soil burial test:
— Part 1: Assessment of rot-retardant finishing
— Part 2: Attack by micro-organisms/mixed culture
— Part 3: Toxicity of textile materials and finishing agents
— Part 4: Saturated atmosphere test (mildew)
Annex A forms a normative part of this part of ISO 11721.
The text of EN ISO 11721-1:2001 has been prepared by Technical Committee CEN/TC 248 "Textiles and textile products", the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 38 "Textiles".
Cellulose-containing textiles are considered resistant to attack by micro-organisms present in soil if their structure, appearance and tensile strength are not essentially altered after a soil burial test. The resistance to deterioration is assessed by measuring the relative reduction in tensile strength between buried and unburied specimens.
If an assessment of long term resistance is required, the procedure described in ISO 11721-2 (in preparation) is applicable.
Due to the biological nature of the soil burial test, and the fact that the test soil cannot be precisely standardized, this standard is only intended to assess the resistance of a fabric to micro-organisms after comparing the performance of specimens with and without a finish.
This standard specifies a method for determination of the resistance of chemically-pretreated textiles to the action of micro-organisms present in soil in comparison with untreated textiles.
This method is applicable to flat textiles made of cellulosic-containing yarns (tentage, tarpaulins, webbing and tapes) that will typically come into contact with soil during use.
Due to the inherent resistance of most synthetic fibres to attack by micro-organisms, fabrics containing a high proportion of synthetic fibres can only be judged by these methods for changes in structure and appearance.
Although this method allows good reproducibility of results, it is intended to show comparative performance rather than provide absolute values.
NOTE Heavy tarpaulin fabrics and webbing may be of such a structure that samples without finish are resistant within a 14 days soil burial period. Also in such cases the decay rate of the untreated sample determines the length of the burial period.
This International Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this International Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).
ISO 139, Textiles — Standard atmospheres for conditioning and testing
ISO 7218, Microbiology of food and animal feeding stuffs — General rules for microbiological examinations
ISO 8022, Surface active agents — Determination of wetting power by immersion
ISO 13934-1, Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and elongation at maximum force using the strip method
ISO 11721-2:2003 纺织品.纤维素纺织品抗菌性的测定.土埋试验.第2部分:防腐处理长期有效性的鉴定
SO 11721-2:2003 Textiles -- Determination of the resistance of cellulose-containing textiles to micro-organisms -- Soil burial test -- Part 2: Identification of long-term resistance of a rot retardant finish
ISO 11721-2 was prepared by the European Committee for Standardization (CEN) in collaboration with Technical Committee ISO/TC 38, Textiles, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
Throughout the text of this document, read "...this European Standard..." to mean "...this International Standard...".
ISO 11721 consists of the following parts, under the general title Textiles — Determination of the resistance of cellulose-containing textiles to micro-organisms — Soil burial test:
— Part 2: Identification of long-term resistance of a rot retardant finish
Cellulose containing textiles are considered as resistant against the attack of microorganisms living in the soil, provided that their structure, appearance and maximum tensile strength have not been altered essentially after a soil burial test.
The assessment of damage resistance takes into account the structure, the aspect and the changes in the maximum tensile strength, compared to untreated specimens of the same material quality. It is assessed by comparing the relative decrease of maximum tensile strength of buried specimens, with that of unburied control specimens.
A long-term rot retardant finish or an increased long-term resistance meets with the requirements for cellulose containing textiles if the maximum tensile strength of a buried specimen, compared with an unburied specimen, does not decrease by more than 25 %.
The soil burial intervals for long-term retardant finishes take twice the time needed for control specimens to lose 80 % of their maximum tensile strength. The soil burial intervals for increased long-term resistant finishes takes four times the time needed for the controls to lose 80 % of their maximum tensile strength.
This European Standard describes a test procedure for identification of the long-term resistance of a rot retardant finish against the attack of microorganisms in the soil.
It allows distinction to be made between rot retardant finishes with no long-term resistance, with regular long-term resistance and with increased long-term resistance, in order to assess the suitability for use in the tropics.
As the soil burial test is a biological process and the test soil not accurately defined, this European Standard only covers the comparison of finished and unfinished specimens.
EN ISO 11721-1:2001, Textiles — Determination of the resistance of cellulose-containing textiles to micro-organisms — Soil burial test — Part 1: Assessment of rot-retardant finishing (ISO 11721-1:2001).
EN ISO 13934-1, Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and elongation at maximum force using the strip method (ISO 13934-1:1999).
ISO 7218, Microbiology of food and animal feeding stuffs — General rules for microbiological examinations.
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