GB/T 13779-2008 English PDF

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GB/T 13779-2008: Cotton fibres -- Test method for length -- Comb sorter method
Status: Obsolete

GB/T 13779: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 13779-2008	359	Add to Cart	3 days	Cotton fibres -- Test method for length -- Comb sorter method	Obsolete
GB/T 13779-1992	319	Add to Cart	3 days	Test method for length of cotton fibres--Comb sorter method	Obsolete

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Basic data

Standard ID: GB/T 13779-2008 (GB/T13779-2008)
Description (Translated English): Cotton fibres -- Test method for length -- Comb sorter method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: W10
Classification of International Standard: 59.060.10
Word Count Estimation: 9,977
Date of Issue: 2008-08-07
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 13779-1992
Quoted Standard: GB/T 6097; GB 6529; GB/T 8170
Regulation (derived from): National Standard Approval Announcement 2008 No.12 (Total No.125)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method for measuring the length of the comb -piece cotton fiber length distribution analyzer parameters. This standard applies to the determination of cotton fiber length indicators.

GB/T 13779-2008: Cotton fibres -- Test method for length -- Comb sorter method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Cotton fibres. Test method for length. Comb sorter method ICS 59.060.10 W10 National Standards of People's Republic of China Replacing GB/T 13779-1992 Test method for length of cotton fiber comb plate method Posted 2008-08-07 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 13779-1992 "Test method for length of cotton fiber comb plate method." This standard compared with GB/T 13779-1992, the main changes are as follows. a) modify the upper quartile length, mass average length of terms and definitions (1992 Version 3.1; Excerpts from 3.1 to 3.4); b) a clear original comb comb piece length meter spacing (1992 version 5.1; this version 5.2); c) the original weighing scales are switching range ≥100mg, division value ≤0.2mg; division value ≤0.05mg balance (1992 Version 5.2; 5.1 edition); d) Modify the record sheets (1992 edition Chapter 10; edition of Appendix A). Appendix A of this standard is an informative annex. This standard is proposed and managed by China Fiber Inspection Bureau. This standard by Shanghai Fiber Inspection is responsible for drafting, Anhui Province Fiber Inspection Bureau assisted in the drafting. The main drafters of this standard. Sui Wah Ming, Li Ying, Kena, Dai Fuwen. This standard was first published in 1992. This is the first revision. Test method for length of cotton fiber comb plate method

1 Scope

This standard specifies the method for measuring the length of the comb-Chip Analyzer cotton fiber length distribution parameters. This standard applies to the determination of cotton fiber length indicators.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6097 sampling cotton fiber test methods GB 6529 textiles conditioning and testing - Standard atmospheres GB/T 8170 numerical rounding rules

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 In the fiber length distribution map, starting from the longest fibers, fiber length to account for 25% of the fiber sample mass at. 3.2 Cotton fiber length distribution, mass-weighted average length of each group of fibers derived. 3.3 In the fiber length distribution of staple fiber spinning is not conducive to a predetermined length limits. 3.4 Short fiber length of the fibers in the mass below the limit of the percentage of the total mass. Principle 4 The sample was organized into one end of the flush cotton beam, using a set of sheet steel needle comb, then from long to short to cotton fiber bundle by a certain length Second packet extractor, were weighed, and then calculated the length distribution parameters.

5 equipment and instruments

5.1 Balances a) range ≥100mg, division value ≤0.2mg; b) dividing the value ≤0.05mg. 5.2 Comb slices the length of the instrument (comb spacing is 3mm). includes a comb plate carrier, fiber clip, push fork, comb on film, fiber rake. 5.3 plate, thin comb, comb dense, pick a needle, tweezers, 50mm fiber foot, velvet panels. ......

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