ISO 15625-2014 PDF

Full title and description

ISO 15625:2014 — Silk — Electronic test method for defects and evenness of raw silk. This international standard specifies electronic test methods (capacitive and optical) for detecting and classifying defects and for measuring the evenness of raw silk yarns in skein or on cone, soaked or unsoaked.

Abstract

ISO 15625:2014 defines the principle, apparatus, sampling, test procedure and reporting format for electronic testing of raw silk. It covers defect detection (slubs, thick places, thin places, small imperfection elements) using capacitive and optical sensors and defines evenness indices (CV% at short and long lengths) for raw silk with specified yarn-size ranges.

General information

• Status: Published (confirmed during periodic review, remains current).
• Publication date: 2014-05 (first edition published April–May 2014).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.01 (Textiles — general).
• Edition / version: Edition 1 (2014).
• Number of pages: 15.

Scope

Specifies electronic test methods for determining defects and evenness of raw silk yarns when tested by capacitive and/or optical electronic testers. It applies to raw silk yarns with linear density approximately between 13.3 dtex and 76.7 dtex (about 12–69 denier), whether presented in skein or on cone, and whether soaked or unsoaked. The standard covers required apparatus characteristics, sampling, conditioning, test speeds, defect classification and reporting of statistical results.

Key topics and requirements

• Measurement principles: capacitive sensors (mass/linear-density variation) and optical sensors (photoelectric/shadow detection) for defect detection; evenness primarily by capacitive measurement.
• Defined defect types and thresholds: slubs, thick places, thin places and small imperfection elements (SIE) with length and mass/cross-sectional criteria for classification.
• Evenness indices: coefficient of variation (CV%) calculated at short and long segment lengths (examples: 1 cm, 5 m, 50 m) and between-skein/cone CV for lot homogeneity.
• Apparatus and test performance: single- or multi-spindle electronic testers with specified signal processing, sensor calibration, test speeds and tension conditions to ensure reproducible results.
• Sampling and sample preparation: sampling plan, conditioning, winding and test-length requirements and reporting of soaked vs unsoaked condition where relevant.
• Test report requirements: identification of sample, test settings, sensor type used, statistical output (defect counts, evenness indices) and any deviations from specified procedure.

Typical use and users

Used by textile testing laboratories, silk reeling and processing facilities, raw-silk buyers and traders, quality-control teams, instrument manufacturers (capacitive/optical testers) and standards bodies. Typical applications include acceptance testing of raw-silk lots, internal quality control, supplier benchmarking and calibration/verification of electronic silk-testing equipment.

Related standards

Closely associated with other textile test and conditioning standards produced under ISO/TC 38 (textiles). For example, standards for yarn linear-density determination (e.g., ISO 2060) and standard atmospheres for conditioning and testing are commonly used alongside ISO 15625 to support sampling and reporting procedures.

Keywords

raw silk; silk testing; electronic tester; capacitive sensor; optical sensor; defects; slub; thick place; thin place; SIE; evenness; CV%; dtex; denier; ISO 15625:2014.

FAQ

Q: What is this standard?

A: ISO 15625:2014 is an international standard that specifies electronic test methods for detecting defects and measuring the evenness of raw silk using capacitive and optical testers.

Q: What does it cover?

A: It covers the principle, apparatus, sampling, test procedure, defect classification, evenness indices and reporting requirements for raw silk (in skein or on cone, soaked or unsoaked) within specified yarn-size ranges.

Q: Who typically uses it?

A: Textile testing laboratories, silk producers and processors, raw-silk buyers, quality-control personnel and manufacturers of electronic silk-testing instruments use this standard.

Q: Is it current or superseded?

A: The first edition was published in 2014 and the publication was reviewed and confirmed in a later review cycle; it is listed as the current (confirmed) edition.

Q: Is it part of a series?

A: ISO 15625:2014 is a standalone test-method standard within the body of ISO textile testing standards managed by ISO/TC 38 (textiles). It is commonly used together with other ISO textile standards (for example, standards on yarn linear density and conditioning) to provide complete test and reporting practices.

Q: What are the key keywords?

A: Raw silk, defects, evenness, capacitive tester, optical tester, CV%, slub, thick place, thin place, SIE, dtex, denier, textile testing, ISO 15625.