1、Designation: D6551/D6551M 05 (Reapproved 2011)Standard Practice forAccelerated Weathering of Pressure-Sensitive Tapes byXenon-Arc Exposure Apparatus1This standard is issued under the fixed designation D6551/D6551M; the number immediately following the designation indicates theyear of original adopti
2、on or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice describes one environment for the expo-sure of pressure-sens
3、itive tape, used primarily for packaging, toa laboratory accelerated weathering environment.1.2 This practice describes sample preparation and theaccelerated environment to which it shall be exposed. It doesnot specify the length of time of the exposure nor what testsshall be performed on the materi
4、al following the exposure.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may resu
5、lt in non-conformancewith the standard.1.4 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 l
6、imitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A666 Specification for Annealed or Cold-Worked Auste-nitic Stainless Steel Sheet, Strip, Plate, and Flat BarD3330/D3330M Test Method for Peel Adhesion ofPressure-Sensitive TapeD3715/D3715M Practice for Quality Assurance ofPressure-Se
7、nsitive TapesD5105 Practice for PerformingAccelerated Outdoor Weath-ering of Pressure-Sensitive Tapes Using ConcentratedNatural SunlightG151 Practice for Exposing Nonmetallic Materials in Ac-celerated Test Devices that Use Laboratory Light SourcesG155 Practice for Operating XenonArc LightApparatus f
8、orExposure of Non-Metallic Materials3. Summary of Practice3.1 The pressure-sensitive tape is exposed for the timespecified in accordance with the conditions provided in Prac-tice G155. Following this exposure the specimen is ready for aprescribed examination of physical characteristics by otherstand
9、ards as determined by the applicable material specifica-tion or other document.4. Significance and Use4.1 This practice describes one method for acceleratedweathering of pressure-sensitive tapes used primarily forpackaging. It is not intended for evaluation the weatheringcharacteristics of pressure-
10、sensitive tapes used in long-termoutdoor exposure conditions (see Practice D5105).4.2 This practice does not necessarily provide direct simu-lation of natural exposure.4.3 Results from use of this practice shall not be representedas being equivalent to those of any natural weathering test untila sat
11、isfactory degree of correlation has been established for thematerial in question.4.4 Variation in results are possible when operating condi-tions vary within accepted limits for the instrument specified inPractices G151 and G155.5. Apparatus5.1 Exposure Apparatus, a xenon-arc weathering apparatuswit
12、h daylight filters conforming to all parameters as describedin Practices G151 and G155.5.2 Panels3,4, for holding or supporting specimens approxi-mately 75 by 225 mm 3 by 9 in. and rigid enough to resistdeformation during use.1This practice is under the jurisdiction of ASTM Committee D10 on Packagin
13、gand is the direct responsibility of Subcommittee D10.14 on Tape and Labels.Current edition approved Aug. 1, 2011. Published November 2011. Originallyapproved in 2000. Last previous edition approved in 2005 as D6551 05. DOI:10.1520/D6551_D6551M-05R11.2For referenced ASTM standards, visit the ASTM we
14、bsite, 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.3The sole source of supply of the apparatus known to the committee at this timeis Chemsultants International,
15、9349 Hamilton Dr., Mentor, OH 440611118. If youare aware of alternative suppliers, please provide this information to ASTMInternational Headquarters. Your comments will receive careful consideration at ameeting of the responsible technical committee,1which you may attend.1Copyright ASTM Internationa
16、l, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2.1 The material shall be Type 302 or 304 stainless steel inaccordance with Specification A666 having a bright annealedfinish. The surface roughness height shall be 50 6 5 mm 2.06 0.1 -in. arithmetical average d
17、eviation from the mean line.5.2.2 Other dimensions or materials and finishes are accept-able when defined by the subsequent test standard or commod-ity specification.5.2.3 A panel or frame of the dimensions required by theexposure apparatus may be used to support the specimen panelwhen it is more co
18、nvenient to do so, as long as the light andwater paths are not interrupted or shortened by doing so.5.3 Rubber Covered Roller, at least as wide as the specimenwith any diameter and rubber hardness.3,46. Sampling6.1 Sampling shall be in accordance with the requirementsof the applicable material or co
19、mmodity specification.6.2 Lacking the previously mentioned specification, sam-pling shall be in accordance with the physical property methodapplicable to the testing following exposure.6.3 When no other sampling requirement is applicable,sampling shall be in accordance with Practice D3715/D3715M.7.
20、Test Specimen7.1 Unless otherwise specified, prepare and expose at leastthree replicate specimens of each tape to be tested. The testspecimen dimensions shall be in accordance with the standardto be used subsequent to this exposure or the commodityspecification.7.2 Unwind and discard at least three,
21、 but no more than six,outer wraps of tape from the sample roll before takingspecimens for testing.7.3 Remove specimens from a freely rotating roll at the rateof 500 to 700 mm 20 to 30 in./s. Where width or other factorscausing a high adherence to backing make it impossible toremove the specimen at t
22、he prescribed rate, remove it at a rateas close to 500 mm 20 in./s as possible.8. Procedure8.1 Apply specimens as directed by the standard to be usedsubsequent to this exposure. If none, apply the specimen,centered lengthwise, to the panel using the rubber coveredroller (5.3), holding the specimen s
23、o that the roller causes thefirst contact of the specimen with the panel.8.1.1 When the test, such as in Test Methods D3330/D3330M, is to follow this exposure, it is customary to applythe tape to the prescribed panel in accordance with TestMethods D3330/D3330M preparatory to the exposure and topeel
24、it without reapplication following exposure.8.1.2 Usually, it is assumed that the backside of thepressure-sensitive tape receives the energy. Any deviationsfrom this would be expressed by the commodity specification.8.2 Set up xenon-arc apparatus with the daylight filtersystem and operate in accorda
25、nce with Practices G151 andG155. Unless otherwise mutually agreed on or specified, setmachine irradiance level of 0.35 W/(m2nm) at 340 nmmaintained at a tolerance level of 60.02 W/(m2nm) at 340 nm.The equivalent broad band irradiance and tolerance levels are41.5 6 2.5 W/m2at 300400 nm and 365 6 20 W
26、/m2at300800 nm.8.2.1 Unless otherwise mutually agreed on or specified,expose specimens in the filtered xenon arc apparatus inaccordance with Practice G151 and Cycle 1 of Practice G155using continuous light and a test cycle consisting of 102 minlight only followed by 18 min of light with water spraye
27、d onthe front surface of the specimens. The uninsulated black paneltemperature shall be controlled at equilibrium at 63C at thecontrol point. The maximum operational fluctuation allowed is63C. In apparatus that has the means of humidification, therelative humidity is set at 50 % at the control point
28、 with amaximum operational fluctuation of 65 %. The chamber airtemperature shall be controlled at 44C at the control pointwith a maximum operational fluctuation of 62C. Conductexposures for the time specified in the relevant productstandard or specification. If no other exposure time is specified,ex
29、pose the specimens for 2000 h.8.3 Follow the instructions of the material specification, orother document, relative to observations, physical tests, or bothto be performed on the specimen following exposure. Deter-mine the average of the result for physical property testsperformed on the specimens.9
30、. Report9.1 In reporting data, including observations, obtained byany examination following this exposure, make reference tothis practice by designation. Provide the following informa-tion:9.1.1 Any deviation from this practice and any item refer-enced in the Report section of Practice G151, and9.1.
31、2 The information required by the applicable materialspecification or other document.10. Keywords10.1 accelerated weathering; pressure-sensitive tape; xenon-arc exposure apparatus4The sole source of supply of the apparatus known to the committee at this timeis Panel Lab Products, 26200 First Street,
32、 Cleveland, OH 94145. If you are awareof alternative suppliers, please provide this information to ASTM InternationalHeadquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee,1which you may attend.D6551/D6551M 05 (2011)2ASTM International takes
33、 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 their own resp
34、onsibility.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 should be addresse
35、d 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 Standards, at the
36、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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D6551/D6551M 05 (2011)3
