Suomen Standardisoimisliitto SFS

This document describes methods for the determination of compensation values for orthotropic coated fabrics (different properties along ideally perpendicular directions, such as the weft and warp yarns for woven based coated fabrics, or along the courses and wales of knitted based coated fabrics) for determining cutting patterns.NOTE The final interpretation and the determination of the compensation values remains the responsibility of the project engineer.Annex C describes a method to determine comparable measures of extensibility along ideally perpendicular directions of coated fabrics. The comparable measures of extensibility may be used by design engineers to assess the extensibility of a coated fabric by comparison with other coated fabrics. In this way, they may help to interpret results of compensation tests. Moreover, they may be used by material suppliers to measure the consistency of extensibility along perpendicular directions of a coated fabric from batch to batch.

This document gives guidelines for the test methods and recommended values for upholstery leather for furniture.This document also specifies the sampling and conditioning procedures of specimens.Furs, hair-on leathers and wool-on leathers are not covered by this document.

This document specifies the methodology to determine if a laboratory is in control in the execution of a standard test method. By using statistical control charts and following this document the 'in-statistical-control' status is established and validated. In-statistical-control means the test results produced by the lab on control samples are reasonably consistent with expectation over time; with random variation scattered around a stable expected centre due to common causes only This document explicitly defines ‘site precision’ conditions as single apparatus, multi-operators, over a long time horizon. It specifies control charts that are most appropriate for ISO TC28 test methods where the dominant common cause variation is associated with the long term, multiple operator conditions as described by "site precision" conditions. The control charts specified for determination of in-statistical-control are: Individual (I), Moving Range of 2 (MR2), Exponentially Weighted Moving Average (EWMA), and zone-based run rules (commonly known as Western Electric (WE)run rules.The procedures in this document have been designed specifically for petroleum and petroleum related products, which are normally considered as homogeneous and for test methods which show normality in obtaining their results. However, the procedures described in this document can also be applied to other types of homogeneous products and test methods.

This document specifies requirements for the designations and descriptions in public or commercial communications, labels or product descriptions when leather is used in upholstered furniture and seating.The designation or description of leather in footwear, leather goods and leather clothing including gloves are not covered by this document.The designation and description of leather in automotive interior applications is covered in prEN 16223 2.