ASTM_D_4925_-_89_scan.pdf

-2595532 0082379 TO3 W ASTM D 4925 ADOPTION NOTICE ASTM D 4925,Standard Test Method for Flexibility and Adhesion of Finish on Leather,was adopted on 5 March 1996 for use by the Department of Defense(DOD).Proposed changes by DOD activities must be submitted to the DOD Adopting Activity:Defense Personnel Support Center,Clothing and Textiles Directorate,Attn:DPSC-FNSE,2800 South 20th Street,Philadelphia,PA 19145-5099.DOD activities may obtain copies of this standard from the Standardization Document Order Desk,700 Robbins Avenue,Building 4D,Philadelphia,PA 19111-5094.The private sector and other Government agencies may purchase copies from the American Society For Testing and Materials,1916 Race Street,Philadelphia,PA 19103-1187.Custodians:Army-GL Navy-NU Air Force-99 Adopting Activity:DLA-CT(Project 83GP-0044-016)FSC 83GP DISTRIBUTION LIST A.Approved for public release;distribution is unlimited.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.ASTM DL1925 89-0759530 003820b L H Designation:D 4925-89 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Test Method for Flexibility and Adhesion of Finish on Leather This standard is issued under the fixed designation D 4925;the number immediately following the designation indicates the year of original adoption or,in the case ofrevision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(t)indicate-s an editorial change since the last revision or reapproval.1.scope 1.1 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 flexibility and adhesion of finish on the leather.1.2 T&is standard may involve hazardous materials,oper-ations,and equipment.This standard does not purport to address all ofthe safety problems associated with its use.It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2.Apparatus and Reagents 2.1 Air Tight Oven,at 1lO”F t-5F(43C*3C).2.2 Calcium chloride,as desiccant,spread thinly over at least 50%of surface area in a tray near bottom of oven.2.3 Desiccator,at room temperature with calcium chlo-ride as desiccant.3.Procedure 3.1 Place sample in fhe oven at 1lO”F f 5F(43C+-3C)This test method is under the jurisdiction of ASTM Committee D-31 on Leather and is the direct responsibility of Subcommittee D31.07 on Physical Properties-General.Current edition approved March 31,1989.Published April 1989.for 24 h.After this period remove sample from the oven and place in a desiccator at room temperature for 2 h.After removing from the desiccator,bend the sample sharply by hand at a 180”angle with the finish side on the inside of the bend,pressing tightly together with the fingers and rolling back and forth for three complete cycles,a distance of approximately 0.25 in.Examine for finish cracks.4.Report 4.1 Visually observe flexibility and report as one of the following:no cracking,slight cracking,or considerable cracking.4.2 Visually observe adhesion for looseness of finish that can be wiped off with fingers and report as one of the following:good,fair,or poor.5.Precision and Bias 5.1 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 test method is adequate for the contemplated use.2American Leather Chemists Ass%,Of&e of SecretawTreasurer,Campus Station,Cincinnati,OH 45221.The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.Users of this standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights,are entirely the/r own responsibllky,This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.Your comments will receive careful consideration at a meeting of the responsible technlcal committee,which you may attend.If you feel that your comments have not received a ialr hearing you should make your vlews known to