Textil- och läderteknik

Ämnesområden: Läder och päls
Kommittébeteckning: SIS/TK 158 (Läder och skodon)
Källa: ISO
Svarsdatum: den 22 feb 2019
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This document specifies a test method to determine the degree and rate of aerobic biodegradation of hides and skins of different animal origin, whether they are tanned or not, through the indirect determination of CO2 produced by the degradation of collagen.

The test material is exposed to an inoculum (activated sludge from tannery wastewater) in an aqueous medium. If you do not have a tannery nearby you can use urban wastewater as the inoculum.

The conditions established in this document correspond to optimum laboratory conditions to achieve the maximum level of biodegradation. However, they may not necessarily correspond to the optimum conditions or maximum level of biodegradation in the natural medium.

In general, the experimental procedure covers the determination of the degradation degree and rate of the material under controlled conditions, which allows the analysis of the evolved carbon dioxide produced throughout the test. For this purpose, the testing equipment complies with strict requirements with regard to flow, temperature and agitation control.

This method applies to the following materials:

— natural polymers of animal stroma (animal tissue/skins),

— animal hides and skins tanned (leather) using organic or inorganic tanning agents,

— leathers that, under testing conditions, do not inhibit the activity of microorganisms present in the inoculum.

Ämnesområden: Läder och päls
Kommittébeteckning: SIS/TK 158 (Läder och skodon)
Källa: CEN
Svarsdatum: den 22 feb 2019
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This document specifies a test method to determine the degree and rate of aerobic biodegradation of hides and skins of different animal origin, whether they are tanned or not, through the indirect determination of CO2 produced by the degradation of collagen.

The test material is exposed to an inoculum (activated sludge from tannery wastewater) in an aqueous medium. If you do not have a tannery nearby you can use urban wastewater as the inoculum.

The conditions established in this document correspond to optimum laboratory conditions to achieve the maximum level of biodegradation. However, they may not necessarily correspond to the optimum conditions or maximum level of biodegradation in the natural medium.

In general, the experimental procedure covers the determination of the degradation degree and rate of the material under controlled conditions, which allows the analysis of the evolved carbon dioxide produced throughout the test. For this purpose, the testing equipment complies with strict requirements with regard to flow, temperature and agitation control.

This method applies to the following materials:

— natural polymers of animal stroma (animal tissue/skins),

— animal hides and skins tanned (leather) using organic or inorganic tanning agents,

— leathers that, under testing conditions, do not inhibit the activity of microorganisms present in the inoculum.

Ämnesområden: Textilfibrer: allmänt
Kommittébeteckning: SIS/TK 160 (Textil)
Källa: CEN
Svarsdatum: den 25 feb 2019
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This document specifies methods for the identification of some bast fibres (flax, hemp, ramie) using both light microscopy (LM) and scanning electron microscopy (SEM). This standard is also applicable to blends of these bast fibres and products made from them.

Ämnesområden: Textilfibrer: allmänt
Kommittébeteckning: SIS/TK 160 (Textil)
Källa: CEN
Svarsdatum: den 18 mar 2019
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This document specifies a method, using aluminium sulfate, to determine the mass percentage of cellulose fibres, after removal of non-fibrous matter, in textiles made of mixtures of

— cellulose fibres (natural or regenerated)

with

— polyester, polyamide, acrylic, wool and elastane fibres.

Ämnesområden: Läder och päls
Kommittébeteckning: SIS/TK 158 (Läder och skodon)
Källa: CEN
Svarsdatum: den 1 apr 2019
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This document specifies a method for determining the tensile strength, elongation at a specified load and elongation at maximum force of leather. It is applicable to all types of leather.

Kommittébeteckning: SIS/TK 160 (Textil)
Källa: CEN
Svarsdatum: den 1 apr 2019
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This part of ISO 1833 specifies a method, using carbon disulfide/acetone, to determine the mass percentage of chlorofibre, after removal of non-fibrous matter, in textiles made of mixtures of

certain chlorofibres, with

— wool, animal hair, silk, cotton, viscose, cupro, modal, lyocell, polyamide, polyester, elastomultiester, acrylic, melamine, polypropylene, polypropylene/polyamide bicomponent, polyacrylate and glass fibres.

Before carrying out the analysis, the solubility of the chlorofibres in the reagent shall be checked.

When the wool or silk content of a mixture exceeds 25 %, the method described in ISO 1833-4 shall be used.

When the polyamide content of a mixture exceeds 25 %, the method described in ISO 1833-7 shall be used.

It is also possible to analyse mixtures containing chlorofibres by using the test methods described in ISO 1833-13 or ISO 1833-21.

Kommittébeteckning: SIS/TK 160 (Textil)
Källa: CEN
Svarsdatum: den 1 apr 2019
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This part of ISO 1833 specifies a method, using glacial acetic acid, to determine the percentage of acetate, after removal of non-fibrous matter, in textiles made of mixtures of

— acetate

with

— certain chlorofibres or after-chlorinated chlorofibres. It is also possible to analyse mixtures containing acetate by using the test methods described in IS0 1833-3 or ISO 1833-9.

Kommittébeteckning: SIS/TK 160 (Textil)
Källa: CEN
Svarsdatum: den 1 apr 2019
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This document specifies a method, using benzyl alcohol, to determine the mass percentage of acetate, after removal of non-fibrous matter, in textiles made of mixtures of

— acetate

with triacetate, polypropylene, elastolefin, melamine, polypropylene/polyamide bicomponent and polyacrylate fibres.

Kommittébeteckning: SIS/TK 184 (Golvbeläggningar)
Källa: CEN
Svarsdatum: den 16 apr 2019
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This document specifies two methods for the evaluation of impregnations or other treatments in needled floor coverings by means of a soiling test.