1、Designation: D 899 00 (Reapproved 2007)Standard Practice forApplied Weight Per Unit Area of Liquid Adhesive1This standard is issued under the fixed designation D 899; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、 revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This practice provides a procedure for t
3、he estimation ofthe quantity of liquid adhesive applied in a spreading or coatingoperation.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, ass
4、ociated 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 Documents2.1 ASTM Standards:2D 907 Terminology of Adhesives3. Terminology3.1 Definiti
5、onsSeveral terms in this practice are defined inaccordance with Terminology D 907.3.2 Definitions of Terms Specific to This Standard:3.2.1 spreading or coating weight per unit area, nthe totalquantity of liquid adhesive uniformly applied, expressed inpounds per thousand square feet of joint or surfa
6、ce area. (Seespread in Terminology D 907.)3.2.2 test specimen, nthe material that is to be coated withadhesive. (See adherend in Terminology D 907).3.2.3 total quantity of liquid adhesive applied the weightof the adhesive on the test specimen as applied on the surfaceor at the glue joint, whether re
7、sulting from a single spread, adouble spread, or multiple applications.4. Significance and Use4.1 For the bonding of adherends, the amount of adhesivepresent is critical and it is important to understand that thispractice does not ensure sufficient adhesive is present on theadherend surface.4.2 This
8、 practice can be used to supplement industry usessuch as that of visually checking the spread or the use ofmil-thickness gages.4.3 In laboratory and industrial operations, hand or me-chanical application of adhesives can be duplicated for costsavings using this practice.5. Apparatus5.1 The following
9、 apparatus is required for this practice:5.1.1 A balance, capable of weighing the material accu-rately to the nearest 1 %, and5.1.2 A suitable instrument for measuring the linear dimen-sions of the specimens to the nearest 1 %.6. Test Specimens6.1 Select test specimens from portions of the actual ma
10、te-rial to be coated or spread, or from the same lot or a similarone, having the same physical characteristics such as thickness,density, or texture.6.2 The size of the specimen may vary with the nature of thesubstrate.NOTE 1Materials of low porosity normally require larger test speci-mens than mate
11、rials of high porosity.6.3 Use simple geometric shapes for the test specimens tofacilitate precise measurement of dimensions.6.4 For operations involving the coating or spreading ofsheeted stock, individual plies or lamina of the adherend, aminimum of 5 test specimens is required for determining the
12、average weight of liquid adhesive applied.1This practice is under the jurisdiction of ASTM Committee D14 on Adhesivesand is the direct responsibility of Subcommittee D14.10 on Working PropertiesCurrent edition approved May 1, 2007. Published May 2007. Originallyapproved in 1947. Last previous editio
13、n approved in 2000 as D 899 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International,
14、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.5 For operations where the test specimen is in continuousform, such as roll stock of paper or fabric, use a test specimensufficient in size to reflect accurately the average spreading orcoating weight of liquid ad
15、hesive.7. Conditioning7.1 Prior to the application of the adhesive, bring the testspecimens to equilibrium with the atmospheric conditionsprevailing under actual or contemplated operational use.8. Procedure8.1 Determine the linear dimensions of the test specimensand calculate their areas to an accur
16、acy of 1 %. Determine theweight of the test specimens to the nearest 1 %.8.2 Apply the adhesive to the test specimens in accordancewith the procedure recommended by the manufacturer, andreweigh the specimens immediately.8.3 Use only test specimens reflecting a normal uniformapplication of adhesive (
17、by visual inspection) in calculating theweight of liquid adhesive applied.9. Calculation9.1 Calculate the weight of liquid adhesive applied asfollows:When W2and W1are expressed in grams:S 5 W22 W1! 3 317.5/N 3 A! (1)When W2and W1are expressed in ounces:S 5 W22 W1! 3 9000/N 3 A! (2)where:S = weight o
18、f liquid adhesive applied, expressed inpounds per thousand square feet of joint or surfacearea,W2= weight of specimen immediately after applicationof the adhesive,W1= weight of specimen before applying the adhesive,A = area of test specimen in square inches, andN = number of surfaces spread.NOTE 2Fo
19、r bonding operations where both contacting surfaces of thejoint are spread with adhesive, the formulas above should be used for eachsurface spread and the combined weight shall equal the total weight ofadhesive applied.10. Report10.1 Report the following information:10.1.1 Complete identification of
20、 the adhesive applied,10.1.2 Method of applying adhesive,10.1.3 Complete description of the adherend test specimens(composition or type, moisture content, size, source, etc.)10.1.4 Number of test specimens used (or total area of testspecimens if from a continuous operation) and calculatedweight of a
21、dhesive applied to each specimen,10.1.5 The average calculated weight of the liquid adhesiveapplied per thousand square feet of surface of joint area, and10.1.6 Any qualifying remarks concerning the test proce-dure.11. Keywords11.1 coating weight; spread weightASTM International takes no position re
22、specting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This
23、 standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Inter
24、national Headquarters. Your comments will 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 b
25、elow.This standard is copyrighted by ASTM 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 899 00 (2007)2
