ASTM_D_4908_-_89_scan.pdf

ASTM D-I=lOB 87-0759510 0038141 T m 4Tb Designation:D 4908-89 AMERICAN 90ClETY FOR TESTINQ AND MATIZRIALS IQ16 Ran,St,;Phtladelphle,Pa.10103 Reprinted from the Ann4 Sock of ASTM Standards.Copyright ASTM II not II&d In the current combined index,will appear in the next edition.Standard Test Method for Tackiness of Finish on Leather This standard is issued under the fixed designation D 4908;the number immediately following the designation indicates the year of original adoption or,in the casa of revision,the year of last revision.A number in parenthesw indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.scope 1.l This test method is intended for use on finished upper leather,for shoes or similar end use,or the leather article,such as a shoe or handbag,to measure both dry,warm and moist,warm tackiness,1.2 This standard may involve hazardous materials,oper-ations,and equipment.This standard daes not purport to address all of the sqfety problems associated with its use.It is the responsibility of the user of this standard to establish appropriate sdety and health practices and determine the applicability of regulatory limitations prior to use.2.Apparatus 2.1 Oven,air-tight at 110 f 5F.3.Reagents 3.1 Calcium chloride as desiccant spread thinly in a tray near the bottom of the oven with a surface area of at least 50%of the surface area of the bottom of the oven,3.2 Humidifier cabinet at 90%relative humidity 5%and 90 zk 2F.*This test method is under the jurisdiction of ASTM Commit&D-31 on Leather and is the direct resoonsibilitv of Subcommittee D31.07 on Phvskal Properties-Oeneral.*.Current edition approved Feb.24,1989.Published April 1989.4.Procedure 4.1 Place the sample in the oven at 110 f 5F for 2 h after which time the sample shall be removed from the oven and immediately felt with clean dry fingers for tackiness.4.1 Place another similar sample in the humidifier at 90%relative humidity and 90 f 2F for 24 h.After removing from the humidifier,feel the sample immediately with clean dry fingers for tackiness.5.Report 5.1 Dry,warm tackiness of finish shall be reported as one of the following:no tackiness,slight tackiness or considerable tackiness.5.2 Moist,warm tackiness of finish shall be reported as one of the following:no tackiness,slight tackiness or considerable tackiness.6.Precision and Bias 6.1 This test method is adopted from the procedures of the American Leather Chemists Association where it has been in use and where it was approved for publication before the inclusion of precision and bias statements were man-dated,The original interlaboratory test data is no longer available.The user is cautioned to verify by the use of reference materials,if available,that the precision and bias of this method is adequate for the contemplated use.The American So&y for Test/n9 and h4ateriak takes no pMion raspecting the valkNty d any patent dghts asseried In connection with any item msntionad In this standard.Users of this standard are expfess&advised that determlnatlon d the vstidity ofany such pstent dghts,and the risk d Intrlngenmnt of such rights,are entire&their own respnslbllky.This standard Is sub/act to revlslon at any time by the responslbte technIca/commktea and must be rev/awed every five years and if not revised,&hsr respproved or withdrawn.Your comments are invited either for revision of this standard or for additbnat standards and should be addressed to ASTM Headquarters.Your comments will r&We careful conslderatlon at a meeting of the responsible tech&ii Commmee,whkh ycu may attend,If yw fee/that your comments have nd received a feir hearIn you should make your views known to the ASTM Committee on$tandar&,1916 Race St.,Philadelphia,PA 19103.1 F-.i-j.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.