1、June 2011 Translation by DIN-Sprachendienst.English price group 10No 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 8
2、5.080.30!$r/“1799712www.din.deDDIN ISO 3039Corrugated fibreboard Determination of grammage of the component papers after separation(ISO 3039:2010)English translation of DIN ISO 3039:2011-06Wellpappe Bestimmung der flchenbezogenen Masse der Lagen nach Trennung (ISO 3039:2010)Englische bersetzung von
3、DIN ISO 3039:2011-06Carton ondul Dtermination du grammage des papiers composants aprs leur sparation(ISO 3039:2010)Traduction anglaise de DIN ISO 3039:2011-06SupersedesDIN ISO 3039:1993-07www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authorita
4、tive.1305.11 A comma is used as the decimal marker. Contents Page National foreword 3 Introduction.5 National Annex NA (informative) Bibliography 4 1 Scope6 2 Normative references6 3 Terms and definitions .6 4 Principle7 5 Reagents.7 6 Apparatus.7 7 Sampling.7 8 Preparation of specimens.8 9 Procedur
5、e.8 9.1 Separation of the component layers .8 9.2 Removal of the adhesive 8 9.3 Drying of the separated layers.8 9.4 Conditioning of the separated layers 8 9.5 Preparation of test pieces.8 9.6 Determination of grammage.9 10 Calculation and expression of results 9 11 Test report9 Annex A (informative
6、) Precision10 Bibliography13 DIN ISO 3039:2011-06 2National foreword This standard has been prepared by Technical Committee ISO/TC 6/SC 2 “Test methods and quality specifications for paper and board” (Secretariat: SIS, Sweden). The responsible German body involved in its preparation was the Normenau
7、sschuss Papier und Pappe (Paper and Board Standards Committee), Working Committee NA 074-02-03 AA Physikalisch-technische Prfverfahren fr Papier und Pappe. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 186 DIN EN ISO 186 ISO 187 DIN E
8、N 20187 ISO 536 DIN EN ISO 536 The text of the International Standard ISO 3039:2010, Corrugated fibreboard Determination of grammage of the component papers after separation was adopted without any modification. Amendments This standard differs from DIN ISO 3039:1993-07 as follows: a) Clause 3 “Term
9、s and definitions” has been added; b) Clause 9 “Procedure” has been rendered more precise; c) Clause 10 “Calculation and expression of results” has been added; d) Annex A (informative) “Precision” has been added; e) the standard has been editorially revised without changing the technical substance.
10、Previous editions DIN 53104-2: 1974-01 DIN ISO 3039: 1993-07 DIN ISO 3039:2011-06 3National Annex NA (informative) 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
11、, Paper and board Sampling to determine average quality DIN EN ISO 536, Paper and board Determination of grammage DIN ISO 3039:2011-06 4Corrugated fibreboard Determination of grammage of the component papers after separation Introduction This International Standard describes a procedure where the se
12、parated component layers are allowed to dry freely, i.e. unrestrained. In 2008, an international round-robin was performed to compare precision data between the two drying procedures: free drying (which can involve shrinkage) and restraint drying (where the layers are prevented from shrinking). As n
13、o statistical provable difference in the repeatability and the reproducibility between the two drying procedures was observed, the faster and simpler procedure, i.e. the free drying method, was chosen for this International Standard. Precision data for free drying are given in Annex A. There is an i
14、ndication from test results that some of the adhesive enters and stays in the papers it comes in contact with, and is not or cannot be removed by the method we use. Thus, the results for layers will generally be greater than the initial values. DIN ISO 3039:2011-06 51 Scope This International Standa
15、rd specifies a method for determining the grammage of the component layers from which corrugated fibreboard has been made. This International Standard is applicable to all types of corrugated fibreboard. 2 Normative references The following referenced documents are indispensable for the application
16、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 Sampling to determine average quality ISO 187, Paper, board and pulps Standard atmosphere for con
17、ditioning 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 grammage mass per unit area mass of a unit area of paper or board determined by a specific method of
18、 test NOTE Grammage is expressed in grams per square metre. ISO 536:19951, definition 3.1 3.2 corrugated fibreboard board consisting of one or more sheets of fluted paper glued to a flat sheet of board or between several sheets ISO 4046-4:20022, definition 4.49 3.3 layer component that is a part of
19、corrugated fibreboard, which normally comprises a fluted layer (fluting) and a flat layer (liner) on each side DIN ISO 3039:2011-06 63.4 facing linerboard (liner) used as the flat component of corrugated fibreboard ISO 4046-4:2002, definition 4.66 3.5 fluting medium corrugating medium fluting paper
20、or board intended for use in the manufacture of corrugated fibreboard ISO 4046-4:2002, definition 4.73 3.6 linerboard board used as the facing material in the production of combined corrugated fibreboard, solid fibreboard or “carton compact” ISO 4046-4:2002, definition 4.105 4 Principle Separation o
21、f the components of corrugated board specimens, to determine their grammage, by soaking in water so that the component layers can be separated. Drying and conditioning of the component layers. Determination of grammage of the individual layers. 5 Reagents 5.1 Tap water, normally having a temperature
22、 of 20 C to 30 C but not exceeding 60 C. 6 Apparatus Use ordinary laboratory apparatus and the following. 6.1 Tank, of sufficient size for immersion of the test specimen, to contain water at room temperature (20 C to 30 C) or hot water not exceeding 60 C. 6.2 Cutting device, for cutting circular (di
23、ameter 112,8 mm 0,5 mm) or square (length 100 mm 0,5 mm) specimens from the corrugated fibreboard. 6.3 Drying oven, capable of maintaining the air temperature at 105 C 2 C, and suitably ventilated. 6.4 Balance, with an actual scale interval of 0,001 g which makes it possible to determine the grammag
24、e of the separate layers to three significant figures (including micro-flute with grammage 100 g/m2for the separate layers). When in use, the balance shall be shielded from air currents. 7 Sampling If the tests are being made to evaluate a lot, carry out the sampling in accordance with ISO 186. If t
25、he tests are made on another type of sample, make sure that the specimens taken are representative of the sample received. DIN ISO 3039:2011-06 7The surfaces of the specimens taken from the corrugated fibreboard shall be free from any damage that may affect the test results. The specimens should, if
26、 possible, be taken from non-printed and non-coated corrugated fibreboard. 8 Preparation of specimens Using the cutting device (6.2), cut the specimens to an area of 10 000 mm2(100 cm2), corresponding to a diameter of 112,8 mm 0,5 mm or a square with sides of 100,0 mm 0,5 mm. Cut enough specimens to
27、 enable the determination of grammage on five test pieces from each component layer. 9 Procedure 9.1 Separation of component layers Using the tank (6.1), immerse the specimens in tap water (5.1) long enough to cause the component layers of the corrugated fibreboard to separate spontaneously or with
28、an extremely light pull. Make sure that the corrugated fibreboard remains submerged in the water, placing weights on the top of it if needed. When separating the component layers, care shall be taken to ensure that minimal fibres are removed from one surface and adhere to the adjoining one. In the c
29、ase of water-resistant adhesive, the water (5.1) can be heated to a temperature not exceeding 60 C to accelerate the process and to separate corrugated fibreboard. The suitable immersion time may vary from grade to grade. In most cases, a few minutes are sufficient, but for grades having highly wate
30、r-resistant adhesive, the necessary immersion time may be several hours. If the immersion time is unknown, it is recommended that the suitable immersion time be evaluated before testing. Blotters may be used to remove excess water, but not when drying. 9.2 Removal of the adhesive By lightly scraping
31、 the surface, remove, while still wet, the adhesive showing on the surface of the component layer, which has not been absorbed by the sheet. Complete removal of the absorbed adhesive cannot be expected. Removal of the fibres shall be avoided. 9.3 Drying of separated layers Dry the separated layers,
32、i.e. liners and fluting, in an oven at a temperature of 105 C 2 C (6.3) to constant mass. Avoid using blotters during drying since components in the adhesive, e.g. starch, might adhere to the fibres. 9.4 Conditioning of separated layers After drying, condition the separated layers in accordance with
33、 ISO 187. 9.5 Preparation of test pieces After cleaning and conditioning, flatten the fluting medium and re-cut the test pieces to an area of 10 000 mm2(100 cm2) using the cutting device (6.2). It is not necessary to re-cut the liners. DIN ISO 3039:2011-06 8One way is to use the take-up factor (TUF)
34、, to calculate the fluting medium mass, according to FEFCO 1025. The TUF should be determined for different grades of fluting. The use of the TUF is not a part of this International Standard. 9.6 Determination of grammage Determine the grammage of the component layers by individually weighing each t
35、est piece to the nearest 0,001 g using the balance (6.4). Carry out the weighing in the same atmosphere as that used to condition the separated layers (9.4). NOTE The individual component mass can be subtracted from the mass of the combined board before separation to obtain an indication of the over
36、all mass of the dried adhesive applied. Conditioning and testing is in accordance with ISO 187. 10 Calculation and expression of results For each test piece, calculate the grammage, g, in grams per square metre, to three significant figures according to: 610mgA= where m is the mass of the test piece
37、 after cutting, in grams (weighing to 0,001 g); A is the area of the test piece after cutting (10 000 mm2), in square millimetres. For each component layer, calculate the mean of the five determinations and report the arithmetic mean grammage to three significant figures and the standard deviation t
38、o two significant figures. 11 Test report The test report shall include the following information: a) a reference to this International Standard; b) the date and place of testing; c) a description and identification of the corrugated fibreboard tested; d) a description and identification of the comp
39、onent layers; e) the duration and temperature of soaking; f) the conditioning atmosphere used; g) the arithmetic mean grammage of each component layer; h) the standard deviation of the grammage for each component layer; i) any deviation from this International Standard that may have affected the res
40、ults. DIN ISO 3039:2011-06 9Annex A (informative) Precision A.1 General In January 2009, an international round-robin was performed in which 18 laboratories from 10 different countries participated. For a single wall of corrugated fibreboard, three laboratories did not report any results and two lab
41、oratories deviated from this International Standard which means that 13 laboratories have been included in the calculations. For a triple wall of corrugated fibreboard, four laboratories did not report any results and three laboratories deviated from this International Standard which means that 11 l
42、aboratories have been included in the calculations, with the exception of “Fluting 1” with only 10. Eight samples of single-wall corrugated board and one sample of triple-wall corrugated board were tested. For each sample, the grammage was determined on five test pieces from each component layer. Th
43、e process of separating corrugated boards into component layers may induce changes in the masses measured, associated with adhesives used, the properties of the layers, or other factors. These shifts, being related to the materials in the corrugated fibreboard, will probably occur in most laboratori
44、es and so are not explicitly included in the round-robin results. Thus, by its nature, this test is capable of only very limited accuracy for predicting the actual initial masses of the components used. However, it can give useful information concerning a general estimate of those masses. The calcul
45、ations were made according to ISO/TR 24498:20064and TAPPI T 1200 sp-076. The repeatability standard deviation reported in Tables A.1 and A.2 is the “pooled” repeatability standard deviation; that is, the standard deviation is calculated as the root-mean-square of the standard deviations of the parti
46、cipating laboratories. This differs from the conventional definition of repeatability in ISO 5725-13. The repeatability and reproducibility limits reported are estimates of the maximum difference that can be expected in 19 of 20 instances when comparing two test results for material similar to that
47、described under comparable test conditions. These estimates may not be valid for different materials or different test conditions. Repeatability and reproducibility limits are calculated by multiplying the repeatability and reproducibility standard deviations by 2,77. NOTE 2,77 = 1,96 2 , provided t
48、hat the test results have a normal distribution and that the standard deviation, s, is based on a large number of tests. DIN ISO 3039:2011-06 10A.2 Repeatability Table A.1 Estimation of repeatability of the test method for single-wall corrugated board Sample Number oflaboratories Mean value Standard deviation Coefficient of variation Repeatability limit srCVrr g/m2g/m2% g/m2A Marked liner 13 209 2,6 1,2 7,2 Fluting 13 131 3,0 2,3 8,3 Liner 13 275 3,3 1,2 9,0 B Marked liner 13 151 1,4 0,9 3,9 Fluting
