Textil- och läderteknik

This guideline defines various preservation methods for raw hides. The preservation methods are needed to suppress microbiological activity and to maintain the quality and commercial value of the hides during storage.

This guideline applies to all raw hides of cattle and horses.

This International Standard specifies the general characteristics of fibre ropes and their constituent materials. It is intended to be used in conjunction with the standards for the individual types of fibre rope, which cover the physical properties and specific requirements for that particular product type.

This International Standard also gives some information on the use of fibre ropes and also on their inspection and retirement criteria.

This International Standard does not intend to address all of the safety matters associated with its use. It is the responsibility of the user to select a rope that is fit for purpose: of the size and with the physical properties to meet the requirements of the application and to determine the applicability of regulatory limitations prior to its use.

This International Standard specifies, for ropes of different kinds, a method of determining each of the

following characteristics:

 linear density;

 diameter;

 lay length;

 braid pitch;

 elongation;

 breaking force.

The linear density, lay length and braid pitch are measured with the rope under a specified tension called the

reference tension, as specified in Annex A.

The elongation corresponds to the measured increase in length of the rope when the tension to which it is

subjected is increased from an initial value (reference tension) to a value equal to 50 % of the minimum

specified breaking strength of the rope.

The breaking force is the maximum force registered (or reached) during a breaking test on the test piece,

carried out on a tensile testing machine with constant rate of traverse of the moving element. The breaking

force values given in the tables of rope specifications are only valid when this type of testing machine is used.

When it is not possible to test the rope in full size, the method described in Annex B can be used, subject to

agreement between the parties involved.

This International Standard also provides a method for measuring water repellence, lubrication and finish

content, when requested by the customer.

This International Standard specifies common methods for the quantitative microscopical analysis of various mixtures of fibres. The methods described is based on the using of a light microscope (LM) or a Scanning Electronic Microscope (SEM), on the measurements of the fibre apparent diameter (preparation of longitudinal views) or on the measurements of fibre section area (preparation of cross views), depending on the section shape of the fibres.

NOTE When the section shape is circular or almost circular, the longitudinal views are appropriate. For the other section shapes, the cross views are adequate. Pictures of section shapes of fibres can be found in ISO/TR 11827.

The given procedures may be applied to fibres in any textile form when mixtures of fibres cannot be separated by manual methods or by chemical methods.

For examples, such mixtures are cashmere and wool, cotton and flax, flax and hemp.

If it is practicable to separate chemically the components, the method described in the individual parts of ISO 1833 should be used in preference to the microscopical methods.

This part of ISO 17076 specifies a method of determining the abrasion resistance of leather using a Taber apparatus.