1、Designation: D6798 02 (Reapproved 2013)2Standard Terminology Relating toFlax and Linen1This standard is issued under the fixed designation D6798; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number i
2、n parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEThe term “average fiber width” was added editorially in September 2014.2NOTEThe terms “dew retting,” “enzyme retting,” and “water retting” were added
3、editorially in September 2015.1. Scope1.1 This terminology covers definitions of technical termsrelated to flax and linen.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD7879 Test Method for Determining Flax Fiber WidthsUsing Image Analysis3. Terminology3.1 Definitio
4、ns:average fiber width (m), nthe arithmetic mean width of aselected group of fibers in a two-dimensional image plane.DISCUSSIONThe selected group of fibers is dependent upon thecapturing device and software parameters as set by the opeator. D7879bast fibers, n in flax stems, fibers found in the laye
5、r ofphloem of the flax stem between the inner xylem tissue andthe epidermis tissue.breaking, nin flax stems, the crushing of the structure of thestem; loosening the bond between the fiber bundles andshives and breaking the shives into short pieces to facilitateits bing, nin flax, the processing of t
6、ow so as to producetops or silver which have the staple length and width suitablefor use in the worsted spinning system.cottonizing, n in flax, the processing of flax fiber so as tomake it suitable for use in the cotton spinning system.decorticating, n in flax, the process of mechanically sepa-ratin
7、g fiber bundles from straw.de-seeding, nin flax, the process of removing seeds andseed-holding structures from plants.dew retting, nin flax, the process of pulling or cutting flaxstraw and leaving on the soil for a period of time to allowpartial degradation of straw to effect retting.enzyme retting,
8、 nin flax, the process of mechanically addingenzyme formulations under precise conditions to pulled orcut flax straw for a period of time to effect retting.fiber bundle, n in flax, group of ultimate fibers which areheld together in the flax stem by pectins, lignins or anycombination thereof.flax, nt
9、he generic name for plants that are botanicallyclassified as Linum usitatissimum, which are cultivated forseed and/or fiber.hackling, nin flax, the process of cleaning and aligninglong-line fibers to improve fineness and remove non-fibrousmaterials and short fibers.linen, na yarn or fabric made sole
10、ly from flax fibers.linen blend, na yarn or fabric made from a combination offlax and other fibers.long line, nin flax, flax fiber bundles that have a minimumlength of 50 cm.over-retting, n in flax, indicates that decomposition hascaused excessive deterioration of bast fibers. (See retting andunderr
11、etting)retting, nin flax, the process of partial biological or chemicaldecomposition of pectins and other components which bindthe fiber, fiber bundles, and the non-fiber structures, therebyfacilitating removal of bast fibers from stems. (See under-retting and over-retting)scutching, nthe mechanical
12、 beating and scraping of flaxstraw subsequent to breaking to separate the shives and towfrom the long line flax fiber.shives, nthe woody parts of the flax plant which are notfibers.1This terminology is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcomm
13、ittee D13.17 on Flax and Linen.Current edition approved July 1, 2013. Published September 2013. Originallyapproved in 2002. Last previous edition approved in 2007 as D6798 02(2007)1.DOI: 10.1520/D6798-02R13E02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Custo
14、mer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1straw, nin flax, refers to dried stem
15、s and plant parts such asroots, leaves, and seed holding structures.tow, nin flax fibers, a combination of fiber bundles andultimate fibers that have a maximum length of 50 cm.DISCUSSIONTow can be made during any stage of processing. Forexample, breaker, scutched and hackled tow are respectively cre
16、atedsubsequent to breaking, scutching and hackling.trash, nin flax fiber, any non-fibrous material.ultimate fiber, n in flax, an individual bast fiber.under-retting, n in flax, indicates that decomposition isinsufficient to allow fiber bundles to be easily removed fromthe non-fibrous parts of the st
17、em. (See retting and over-retting)water retting, nin flax, the process of immersing flax strawfor a period of time in water to effect retting.3.2 Other DefinitionsFor the definitions of other textileterms used in this standard, refer to Terminology D123.4. Keywords4.1 definitions; flax; linen; termi
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