1、Designation: C 735 04Standard Test Method forAcid Resistance of Ceramic Decorations on Returnable Beerand Beverage Glass Containers1This standard is issued under the fixed designation C 735; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, the 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 covers qualitative determination of theacid resistance of ceramic decorations on
3、 returnable beer andbeverage containers, to assure the necessary durability of thedecoration.1.2 This test provides an indication of performance whenand if the decoration is to be exposed to the acid solutions usedin reclaiming bottles, and it also covers those instances wherethe beverages themselve
4、s have acidic properties.1.3 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 pri
5、or to use.2. Referenced Documents2.1 ASTM Standards:2C 224 Practice for Sampling Glass Containers3. Summary of Test Method3.1 This test method is a qualitative method which deter-mines by visual inspection the degree of attack of a nominal10 % hydrochloric acid solution on the ceramic decoration.4.
6、Significance and Use4.1 This test method evaluates the quality and serviceabilityof ceramic decorations on returnable beer and beverage con-tainers.4.2 This test method is also suitable for specification accep-tance. Its significance is that bottles with good acid resistancecoatings have longer serv
7、ice life.5. Reagent5.1 Hydrochloric Acid (27 + 73)Dilute 27 volumes ofconcentrated hydrochloric acid (HCl, sp gr 1.19) with 73volumes of distilled water. This will produce nominal 11.5weight % HCl. The volume of the solution may be varied asneeded.6. Test Specimen6.1 The decorated ware should be rep
8、resentative of the lot,or run, and should be taken in accordance with the principlesstated in Practice C 224.7. Procedure7.1 Pour the HCl (27 + 73) into a beaker large enough toaccept all of the test specimen and the reference sample. Keepthis solution at room temperature (25 6 5C).7.2 Place the tes
9、t specimen into the HCl so that approxi-mately one half of the label is immersed, and cover the beaker.7.3 Remove the specimen from the HCl after 20 min. Rinsewith water and dry.7.4 Record the temperature of the HCl at both the beginningand the end of the test period.7.5 Retain a duplicate piece of
10、ware with each decorationunder test, without exposure to HCl as an aid in judging thedegree of chemical attack on the specimens under test.8. Interpretation of Results8.1 Judge the degree of the HCl attack on the decoratedsurface by visually comparing the exposed specimen to thenonexposed specimen,
11、if such is available.8.2 Grade the decoration on the test specimen according toone of the following classes:Grade 1No attack apparent.Grade 2Appearance of iridescence or visible stain on theexposed surface when viewed at a 45 angle but not apparentat angles less than 30.Grade 3A definite stain which
12、 does not blur reflectedimages and is visible at angles less than 30.Grade 4Definite stain with a gross color change orstrongly iridescent surface visible at angles less than 30.Grade 5Surface dull or matte with chalking possible.1This test method is under the jurisdiction of ASTM Committee C14 on G
13、lassand Glass Products, and is the direct responsibility of Subcommittee C14.10 onGlass Decoration in cooperation with the Society of Glass Decorators CommitteeA-20.Current edition approved Oct. 1, 2004. Published October 2004. Originallyapproved in 1972. Last previous edition apporved in 1999 as C
14、735 93 (1999).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, 100 Barr Harbor
15、Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Grade 6Significant removal of enamel with pinholingevident.Grade 7Complete removal of enamel in exposed area.8.3 Reference ware is a decorated, returnable beer orbeverage container of known acid resistance.9. Report9.1 Report the fo
16、llowing information:9.1.1 Identification of the ware, the decorating materialused, and the firing cycle used,9.1.2 Test solution temperature at both the beginning andthe end of the test period,9.1.3 Grading of the specimens and the reference sample asin 8.2, and9.1.4 Date of test and name of operato
17、r conducting test.10. Precision and Bias10.1 No justifiable statement can be made regarding theprecision and bias of this test method since the degree of attackis determined using a subjective grading system.11. Keywords11.1 acid resistance; ceramic decorations; returnable glasscontainersASTM Intern
18、ational takes no position respecting 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 t
19、heir own responsibility.This 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 shoul
20、d be addressed to ASTM International 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 Stand
21、ards, at the address shown below.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).C735042
