ASTM D4772-1997(2004) Standard Test Method for Surface Water Absorption of Terry Fabrics (Water Flow)《丝绒纺织品表面吸水性的标准试验方法(水流试验法)》.pdf
《ASTM D4772-1997(2004) Standard Test Method for Surface Water Absorption of Terry Fabrics (Water Flow)《丝绒纺织品表面吸水性的标准试验方法(水流试验法)》.pdf》由会员分享,可在线阅读,更多相关《ASTM D4772-1997(2004) Standard Test Method for Surface Water Absorption of Terry Fabrics (Water Flow)《丝绒纺织品表面吸水性的标准试验方法(水流试验法)》.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 4772 97 (Reapproved 2004)Standard Test Method forSurface Water Absorption of Terry Fabrics (Water Flow)1This standard is issued under the fixed designation D 4772; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、year of last revision. A number 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 test method determines the ability of a terry fabricto rapidly absorb and retain liquid water from surfa
3、ces such ashuman skin, dishes, and furniture.1.2 This test method is not applicable to non-terry fabricssuch as huck towels, waffle-weave towels, crash towels,flour-sack towels, and nonwoven wipes. The steep angle of thespecimen on the apparatus may cause a large amount of waterto runoff these non-p
4、ile fabrics, or the lightweight/open struc-ture of these fabrics may allow a large amount of water tocompletely pass through the specimen; thus the test result maynot be a valid measure of a non-terry fabrics ability to absorbwater.1.3 This test method is not applicable to decorative terryfabrics th
5、at will not be used to absorb water from surfaces.1.4 This test method is written in SI units. The inch-poundunits that are provided are not necessarily exact equivalents ofthe SI units. Either system of units may be used in this testmethod. In case of referee decisions the SI units will prevail.1.5
6、 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Docu
7、ments2.1 ASTM Standards:2D 123 Terminology Relating to TextilesD 1776 Practice for Conditioning Textiles for TestingD 2904 Practice for Interlaboratory Testing of a Textile TestMethod that Produces Normally Distributed DataD 2906 Practice for Statements on Precision and Bias forTextilesD 3136 Termin
8、ology for Permanent Care Labels for Con-sumer Textile and Leather Products Other Than Carpetsand UpholsteryD 5433 Performance Specification for Towel Products forInstitutional and Household Use2.2 AATCC Standard:Test Method 135 Dimensional Changes in Automatic HomeLaundering of Woven and Knit Fabric
9、s33. Terminology3.1 Definitions:3.1.1 absorption, na process in which one material (theabsorbent) takes in or absorbs another (the absorbate); as theabsorption of moisture by fibers.3.1.2 pile, nin pile fabric, the raised loops or tufts (cutloops) that form all or part of the surface.3.1.3 surface w
10、ater absorption, nby a fabric, the processof removing liquid water from a surface such as human skin,dishes, or furniture.3.1.4 terry fabric, na material with a woven warp pile ora knitted pile, with uncut loops on a single side or uncut loopson both sides, and which is used for such products as tow
11、eling,beachwear, and bathrobes.3.1.5 For definitions of other textile terms used in this testmethod, refer to Terminologies D 123 and D 3136.4. Summary of Test Method4.1 A terry fabric product with hems or with both hems andselvages (such as a bath towel), or a terry fabric without hemsor without bo
12、th hems and selvages (such as a terry fabric cutfrom a roll) is prepared for testing by preconditioning andconditioning. Specimens are placed one at a time in anembroidery hoop and then the hoop/specimen assembly isplaced at an angle on the base of the apparatus. After waterflows down the surface of
13、 each specimen, the amount of waterretained by each specimen is measured. Six specimens aretested, three on the face of the fabric and three on the back ofthe fabric. The six observations are averaged to determine thesurface water absorption of the fabric.5. Significance and Use5.1 This test method
14、may be used to test the surface waterabsorption of terry fabrics for bath towels, bath sheets, handtowels, kitchen towels, dishcloths, washcloths, beachwear,1This test method is under the jurisdiction of ASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.59 on Fabric
15、Test Methods,General.Current edition approved Jan. 10, 1997. Published June 1997. Originallypublished as D 4772-88. Last previous editioin D 4772 88.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStanda
16、rds volume information, refer to the standards Document Summary page onthe ASTM website3Available from American Association of Textile Chemists and Colorists, P.O.Box 12215, Research Triangle Park, NC 27709.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1942
17、8-2959, United States.bathrobes, and the like. Different specifications may be neededfor each of these fabrics because of different applications.45.2 It is recognized that surface water absorption is only oneof the characteristics that the ultimate consumer may use indetermining which terry fabric i
18、s acceptable. Consult Specifi-cation D 5433 for other characteristics that may be applicableto terry fabrics.5.3 This test method is recommended for quality controltesting of terry fabrics during manufacturing and productcomparisons of different terry fabrics by manufacturers, retail-ers, and users.
19、5.4 This test method may be used for the acceptance testingof commercial shipments of terry fabrics, but caution isadvised since interlaboratory precision is known to be poor.Comparative tests as directed in 5.4.1 may be advisable.5.4.1 In case of a dispute arising from differences inreported test r
20、esults when using this test method for acceptancetesting of commercial shipments, the purchaser and the sup-plier should conduct comparative tests to determine if there isa statistical bias between their laboratories. Competent statis-tical assistance is recommended for the investigation of bias.As
21、a minimum, the two parties should take a group oflaboratory sampling units (such as towels) that are as homo-geneous as possible and that are from a lot of material of thetype in question. The laboratory sampling units should then berandomly assigned in equal numbers to each laboratory fortesting. T
22、he average results from the two laboratories should becompared using appropriate statistical analysis for unpaireddata and an acceptable probability level chosen by the twoparties before the testing is begun. If a bias is found, either itscause must be found and corrected or the purchaser andsupplie
23、r must agree to interpret future test results with consid-eration of the known bias.6. Apparatus and Materials6.1 Water Flow TesterThis tester is not commerciallyavailable, but it is not difficult or expensive to build. The testershown in Figs. 1-3 can be made from the parts and the seriesof steps d
24、escribed in Annex A1; however, there are otheracceptable ways to build the tester. Sections 6.1.1-6.1.4 indi-cate the critical factors which must be incorporated into thedesign of the tester.6.1.1 The hoop/specimen assembly must be at 1.1 rad (60)to the table top (see Fig. 1 and Fig. 3).6.1.2 The 50
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