1、Designation: D 6798 02 (Reapproved 2007)Standard Terminology Relating toFlax and Linen1This standard is issued under the fixed designation D 6798; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This terminology covers definitions of technical termsrelated to flax and linen.2. Referenced Documents2.1 ASTM Standards:2D 123 Terminology
3、Relating to Textiles3. Terminology3.1 Definitions:bast fibers, nin flax stems, fibers found in the layer ofphloem of the flax stem between the inner xylem tissue andthe epidermis tissue.breaking, vin flax stems, the crushing of the structure of thestem; loosening the bond between the fiber bundles a
4、ndshives and breaking the shives into short pieces to facilitateits bing, vin flax, the processing of tow so as to producetops or silver which have the staple length and width suitablefor use in the worsted spinning system.cottonizing, vin flax, the processing of flax fiber so as tomake it suitable
5、for use in the cotton spinning system.decorticating, vin flax, the process of mechanically separat-ing fiber bundles from straw.de-seeding, vin flax, the process of removing seeds andseed-holding structures from plants.fiber bundle, nin flax, group of ultimate fibers which areheld together in the fl
6、ax stem by pectins, lignins or anycombination thereof.flax, nthe generic name for plants that are botanicallyclassified as Linum usitatissimum, which are cultivated forseed and/or fiber.hackling, vin flax, the process of cleaning and aligninglong-line fibers to improve fineness and remove non-fibrou
7、smaterials and short fibers.linen, na yarn or fabric made solely 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, vin flax, indicates that decomposition hascaused e
8、xcessive deterioration of bast fibers. (See retting andunderretting)retting, vin 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. (
9、See under-retting and over-retting)scutching, vthe mechanical 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.straw, nin flax, refers to dried stems and plant parts suc
10、h 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 createdsubsequent to bre
11、aking, scutching and hackling.trash, nin flax fiber, any non-fibrous material.ultimate fiber, nin flax, an individual bast fiber.under-retting, vin flax, indicates that decomposition isinsufficient to allow fiber bundles to be easily removed fromthe non-fibrous parts of the stem. (See retting and ov
12、er-retting)3.2 Other DefinitionsFor the definitions of other textileterms used in this standard, refer to Terminology D 123.4. Keywords4.1 definitions; flax; linen; terminology1This terminology is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee
13、 D13.17 on Flax and Linen.Current edition approved Jan. 1, 2007. Published January 2007. Originallyapproved in 2002. Last previous edition approved in 2002 as D 6798 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annua
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17、ill receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by A
18、STM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 6798 02 (2007)2
