1、August 2016 English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 85.080.30!%Y.U“2541150www.din.deDI
2、N ISO 3034Corrugated fibreboard Determination of single sheet thickness (ISO 3034:2011),English translation of DIN ISO 3034:2016-08Wellpappe Bestimmung der Dicke von Wellpappe (ISO 3034:2011),Englische bersetzung von DIN ISO 3034:2016-08Carton ondul Dtermination de lpaisseur dune feuille unique (ISO
3、 3034:2011),Traduction anglaise de DIN ISO 3034:2016-08SupersedesDIN ISO 3034:2012-09www.beuth.deDocument comprises 12 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.08.16 A comma is used as the decimal marker. Contents Page N
4、ational foreword .3 National Annex NA (informative) Bibliography 3 1 Scope5 2 Normative references4 3 Terms and definitions.4 4 Principle4 5 Apparatus.5 6 Sampling.5 7 Conditioning5 8 Preparation of test pieces.5 9 Procedure.6 9.1 General.6 9.2 Verification and calibration of micrometer.6 9.3 Determ
5、ination of single board thickness6 10 Calculation and expression of results6 11 Test report7 Annex A (normative) Verification of micrometer performance and calibration.8 Annex B (informative) Precision10 Bibliography12 2DIN ISO 3034:2016-08 National foreword This document is a result of the adoption
6、 of ISO 3034:2011. This document has been prepared by ISO/TC 6/SC 2 “Test methods and quality specifications for paper and board (Secretariat: SIS, Sweden). International Standard ISO 3034:2011, Corrugated fibreboard Determination of single sheet thickness, has been incorporated in this document wit
7、hout modifications. The responsible German body involved in its preparation was DIN-Normenausschuss Papier, Pappe und Faserstoff (DIN Standards Committee Paper, Board and Pulps), Working Committee NA 074-02-03 AA Physikalisch-technische Prfverfahren fr Papier, Pappe und Faserstoff. Attention is draw
8、n to the possibility that some of the elements of this document may be the subject of patent rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. The DIN Standards corresponding to the International Standards referred to in Clause 2 of this standard are
9、 as follows: ISO 186 DIN EN ISO 186 ISO 187 DIN EN 20187 Amendments Compared with DIN ISO 3034:2012-09, the following corrections have been made: a) an error with regard to the area where specimens are to be taken from has been corrected. Previous editions DIN ISO 3034: 2012-09 National Annex NA (in
10、formative) Bibliography DIN EN 20187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples DIN EN ISO 186, Paper and board Sampling to determine average quality 3DIN ISO 3034:2016-08 Corrugated fibreboard Dete
11、rmination of single sheet thickness 1 Scope This International Standard specifies a method for determining the single sheet thickness of corrugated fibreboard intended for use in the manufacture of packing cases. This International Standard is applicable to all types of corrugated fibreboard. 2 Norm
12、ative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 186, Paper and board Samplin
13、g to determine average quality ISO 187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 corrugated
14、 fibreboard board consisting of one or more sheets of fluted paper glued to a flat sheet of board or between several sheets ISO 4046-4:2002, definition 4.49 3.2 single sheet thickness corrugated fibreboard distance between one surface of a corrugated fibreboard and the other, measured under an appli
15、ed static load, using the test method specified in this International Standard 4 Principle Measurement of thickness of corrugated board under a specific static load by means of a high-precision micrometer. 4DIN ISO 3034:2016-08 5 Apparatus 5.1 Dead-weight micrometer, provided with two plane, paralle
16、l, circular pressure faces, between which the corrugated board is placed for measurement. The pressure exerted between the pressure faces during the thickness measurement shall be 20 kPa 0,5 kPa. NOTE Other methods exist that use alternative pressures; however, different loading pressures might not
17、give the same results. The two pressure faces shall form an integral part of the micrometer, such that one face is fixed (the anvil) and the other is movable, in a direction perpendicular to the plane of the fixed face, smoothly at a speed of 2 mm/s to 3 mm/s. One face shall be 35,7 mm 0,3 mm in dia
18、meter and the second face shall be of such a size that it is in contact with the whole area of the other face when the micrometer reads zero. Thus, a circular region of a test piece, 1 000 mm2 20 mm2(10 cm2 0,2 cm2) in area, is subjected during the thickness measurement to the pressure exerted betwe
19、en the faces. The instrument shall be sufficiently accurate to permit measurements to be made to the nearest 0,05 mm (see Annex A). The performance requirements of the micrometer shall be such that, when calibrated according to the method given in Annex A, the micrometer complies with the required p
20、ressure of 20 kPa 0,5 kPa and the performance requirements as shown in Table 1 (see also 9.2). Table 1 Micrometer performance requirements Micrometer characteristics Maximum permitted value Indication error 0,5 % of the reading Error of parallelism between pressure faces 1 % Repeatability of measure
21、ment (as standard deviation) 0,5 % 5.2 Thickness gauges (to be used in A.4), corresponding to approximately 10 %, 30 %, 50 %, 70 % and 90 % of the full-scale reading of the micrometer. The thickness of each gauge shall be known to an accuracy of 5 m. 6 Sampling If the tests are made to evaluate a lo
22、t, select the sample in accordance with ISO 186. If the tests are made on another type of sample, make sure that the specimens taken are representative of the sample received. 7 Conditioning Condition the specimens in accordance with ISO 187. 8 Preparation of test pieces Prepare the test pieces in t
23、he same standard atmospheric conditions as used to condition the specimens. The test pieces shall normally be free from any damage or other irregularities and, unless otherwise agreed between the interested parties, free from converting machine marks, printings, etc. that may affect the test results
24、. 5DIN ISO 3034:2016-08 If the thickness of a printed sample is desired, all measurements should be performed in printed areas. Testing can be done on a variety of samples in different states of quality to achieve various goals of process understanding and troubleshooting. Specimens should be repres
25、entative of the materials being tested. If the test specimens are to be taken from corrugated shipping containers, they should be taken from areas away from scorelines, joints and closures. Unless otherwise agreed upon between interested parties, specimens should not be taken from obviously damaged
26、areas and/or areas not representative of the container as a whole. Select, at random, at least 5 specimens large enough to permit the cutting of at least 10 test pieces (two from each specimen). Cut from the specimens, test pieces each with an area of at least 10 000 mm2(100 cm2), either square or c
27、ircular (of diameter 112,9 mm). If only one test piece can be cut from each specimen, select 10 specimens and cut one test piece from each. Ensure that the test piece dimensions are not so large that the micrometer reading is affected by the test piece mass that overhangs the lower pressure face whi
28、le a measurement is being made. 9 Procedure 9.1 General Prior to the use of the micrometer (5.1) or when calibrating it (see Annex A), ensure that the anvil, pressure foot and thickness gauges (5.2) are clean. Check the zero point of the precision micrometer before and also during a series of measur
29、ements. NOTE Particularly in the case of the anvil and pressure foot, small pieces of fibre can collect on these surfaces, causing erroneously high values. With the pressure faces in contact with one another, set the micrometer reading to zero. 9.2 Verification and calibration of micrometer At appro
30、priate time intervals, calibrate the micrometer at the temperature of normal use, and verify its performance using the method given in Annex A. 9.3 Determination of single board thickness Carry out the test in the standard atmospheric conditions at which the samples were conditioned. Place the micro
31、meter on a horizontal vibration-free surface, and place the test piece between the open pressure faces of the micrometer at a position at least 20 mm from any edge of the test piece. Permit the test piece to be held by the pressure face, by very carefully allowing the movable pressure face to move s
32、teadily and slowly, at a velocity of 2 mm/s to 3 mm/s, towards the anvil so that any punching effect is avoided. Record the micrometer reading as soon as its value becomes steady, normally within 2 s to 5 s. If any “bedding down” of the corrugated board can occur, the reading shall be within 2 s to
33、3 s. Avoid imposing any manual stress on the test piece or micrometer while a reading is being made. Make only one measurement on the test piece. Repeat the above procedure for the remaining test pieces. 10 Calculation and expression of results Calculate the mean value and standard deviation of not
34、less than ten readings made in accordance with 9.3. Express the single sheet thickness corrugated fibreboard, in millimetres, to three significant figures. 6DIN ISO 3034:2016-08 11 Test report The test report shall include the following information: a) a reference to this International Standard; b)
35、the date and place of testing; c) a description and identification of the material tested; d) the conditioning atmosphere used; e) the arithmetic mean of the single sheet thickness corrugated fibreboard, as stated in Clause 10, and the standard deviation; f) any deviation from this International Sta
36、ndard that may have affected the results; g) any other information which may assist in the interpretation of the test results; in particular, whether any areas compressed by printing or other converting machines are involved. 7DIN ISO 3034:2016-08 Annex A (normative) Verification of micrometer perfo
37、rmance and calibration A.1 General Verify the performance of the micrometer in the conditioned atmosphere, in which thickness measurements are to be made, using the following tests in the order given. For micrometers in frequent use, determine the indication error and repeatability of measurement an
38、d determine the pressure exerted between the pressure faces and their error of parallelism according to the recommendation of the manufacturer. If the micrometer performance is not within the tolerance appropriate to a particular measurement (see 5.1), make the necessary correction and recommence th
39、e series of tests. To cover the range of corrugated fibreboards normally encountered, it is desirable that the measuring capacity of the dead-weight micrometer should be at least 20 mm. Prior to the calibration, ensure that the anvil, pressure foot and thickness gauges (5.2) are clean. When thicknes
40、s gauges are used, they should be gently wiped with alcohol using a non-linting absorbent material. A.2 Pressure exerted between pressure faces Use any suitable means (e.g. certified load cells or a laboratory balance with a through-spindle mounted above the micrometer with a cradle to suspend the p
41、ressure foot) of verifying the accuracy and uniformity of the pressure exerted between the pressure faces. This verification can also be performed during the calibration service by the manufacturer. Use pressure-sensitive film to verify the evenness of pressure. A.3 Indication error and repeatabilit
42、y of measurement A.3.1 With the pressure faces in contact with one another, set the micrometer reading to zero. Do not reset the zero reading during the following procedure. A.3.2 Open the gap between the pressure faces, allow it to close again so that the pressure faces make contact with one anothe
43、r, and note the micrometer reading. Repeat this procedure at least five times. A.3.3 Take one of the thickness gauges specified in 5.2, open the gap between the pressure faces, interpose the gauge, allow the faces to close upon the gauge (see 9.1) and note the micrometer reading. Avoid direct handli
44、ng of the thickness gauges when cleaning or positioning them. Repeat this procedure at least five times. A.3.4 Repeat the procedure described in A.3.3, using, in turn, each of the remaining thickness gauges. NOTE The thickness gauges are used singly, not in combination. A.3.5 Repeat the procedure de
45、scribed in A.3.2. 8DIN ISO 3034:2016-08 A.3.6 For each gauge thickness at which micrometer readings are taken, calculate a) the repeatability of measurement, that is, the standard deviation of the five (or more) readings taken, and b) the indication error, i.e. the difference between the mean of the
46、 five (or more) readings taken and the gauge thickness. A.4 Parallelism of pressure faces A.4.1 Take one of the thickness gauges specified in 5.2, open the gap between the pressure faces and interpose the gauge, as near as possible to one edge of the faces. Allow the pressure faces to close upon the
47、 gauge (see 9.1) and note the micrometer reading. A.4.1.1 Open the gap between the pressure faces and interpose the thickness gauge as close as possible to the edge of the faces diametrically opposite the edge used in A.4.1. Allow the pressure faces to close upon the gauge (see 9.1) and again note t
48、he micrometer reading. A.4.2 Repeat the procedure described in A.4.1, using positions as near as possible to the edge of the pressure faces and on a diameter perpendicular to that passing through the points referred to in A.4.1. A.4.3 Repeat the procedure described in A.4.1, A.4.1.1 and A.4.2, using
49、, in turn, each of the remaining thickness gauges. NOTE The thickness gauges are used singly, not in combination. A.4.4 For each gauge thickness at which micrometer readings are taken, calculate the error of parallelism, E, according to Equation (A.1): 22120,5E dd=+ (A.1) where d1is the difference between the readings corresponding to opposite ends of a diameter of the pressure faces; d2is the difference between the readings corresponding to opposite ends of a diameter of t
