1、April 2011 Translation by DIN-Sprachendienst.English price group 9No 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、5.080.20!$nn#“1757500www.din.deDDIN EN ISO 12625-8Tissue paper and tissue products Part 8: Water-absorption time and water-absorption capacity,basket-immersion test method (ISO 12625-8:2010)English translation of DIN EN ISO 12625-8:2011-04Tissue-Papier und Tissue-Produkte Teil 8: Zeit fr die Wassera
3、ufnahme und Wasseraufnahmekapazitt,Korbeintauch-Prfverfahren (ISO 12625-8:2010)Englische bersetzung von DIN EN ISO 12625-8:2011-04Papier tissue et produits tissues Partie 8: Temps dabsorption deau et capacit dabsorption deau, mthode dessaidimmersion au panier (ISO 12625-8:2010)Traduction anglaise de
4、 DIN EN ISO 12625-8:2011-04SupersedesDIN EN ISO 12625-8:2006-07www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 1 pages03.115DIN EN ISO 12625-8:2011-04 A comma is used as the decimal marker. National foreword This standard has been prepa
5、red by Technical Committee CEN/TC 172 “Pulp, paper and board”, Working Committee WG 8 “Test methods for soft tissue papers” (Secretariat: DIN, Germany) in collaboration with Technical Committee ISO/TC 6 “Paper, board and pulps” (Secretariat: SCC, Canada). The responsible German body involved in its
6、preparation was the Normenausschuss Papier, Pappe und Faserstoff (Paper, Board and Pulps Standards Committee), Working Committee NA 074-02-05 AA Prf-verfahren fr Tissue-Papier und Tissue-Produkte. The DIN Standards corresponding to the International Standards referred to in this document are as foll
7、ows: ISO 186 DIN EN ISO 186 ISO 187 DIN EN ISO 20187 ISO 287 DIN EN ISO 287 ISO 15755 DIN EN ISO 15755 Amendments This standard differs from DIN EN ISO 12625-8:2006-07 as follows: a) as the comparability of results obtained with the manual method and the automated method is not acceptable, the autom
8、ated method has been deleted; b) the standard has been editorially revised and updated. EN ISO 12625 consists of the following parts, under the general title Tissue paper and tissue products: Part 1: General principles for the use of terms Part 3: Determination of thickness, bulking thickness and ap
9、parent bulk density Part 4: Determination of tensile strength, stretch at break and tensile energy absorption Part 5: Determination of wet tensile strength Part 6: Determination of grammage Part 7: Determination of optical properties Measurement of brightness and colour Part 8: Water-absorption time
10、 and water-absorption capacity, basket-immersion test method Part 9: Determination of ball burst strength Part 12: Determination of tensile strength of perforated lines Calculation of perforation efficiency Previous editions DIN 54540-4: 1989-06 DIN V ENV 12625-8: 2001-09 DIN EN ISO 12625-8: 2006-07
11、 2 DIN EN ISO 12625-8:2011-04 National 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, Paper and board Sampling to determine average qual
12、ity DIN EN ISO 287, Paper and board Determination of moisture content of a lot Oven-drying method DIN EN ISO 15755, Paper and board Estimation of contraries 3 DIN EN ISO 12625-8:2011-04 4 Leerseite EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12625-8 December 2010 ICS 85.060 Supersedes E
13、N ISO 12625-8:2006English Version Tissue paper and tissue products - Part 8: Water-absorption time and water-absorption capacity, basket-immersion test method (ISO 12625-8:2010) Papier tissue et produits tissues - Partie 8: Temps dabsorption deau et capacit dabsorption deau, mthode dessai dimmersion
14、 au panier (ISO 12625-8:2010) Tissue-Papier und Tissue-Produkte - Teil 8: Zeit fr die Wasseraufnahme und Wasseraufnahmekapzitt, Korbeintauch-Prfverfahren (ISO 12625-8:2010) This European Standard was approved by CEN on 14 December 2010. CEN members are bound to comply with the CEN/CENELEC Internal R
15、egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN m
16、ember. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions
17、. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloven
18、ia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nat
19、ional Members. Ref. No. EN ISO 12625-8:2010: EContents Foreword. 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Principle . 5 5 Reagent 6 6 Preparation and conditioning of the test pieces 6 7 Manual test method. 6 8 Calculation and expression of results. 8 9 Test r
20、eport 9 10 Precision 10 Bibliography . 1 1Page 2DIN EN ISO 12625-8:2011-04 EN ISO 12625-8:2010 (E) Foreword This document (EN ISO 12625-8:2010) has been prepared by Technical Committee CEN/TC 172 “Pulp, paper and board”, the secretariat of which is held by DIN, in collaboration with Technical Commit
21、tee ISO/TC 6 “Paper, board and pulps”. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. Attention is dra
22、wn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 12625-8:2006. According to the CEN/CENELEC Internal Regulations, the n
23、ational standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlan
24、ds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 3DIN EN ISO 12625-8:2011-04 EN ISO 12625-8:2010 (E) Introduction This part of ISO 12625 describes one principle for the determination of water-absorption properties of tissue paper and tissu
25、e products, a principle in which sheets of the sample are inserted in a cylindrical basket, which is immersed in water. The results are expressed as g127 water-absorption time, and g127 water-absorption capacity. In European and international trade, both water-absorption time and water-absorption ca
26、pacity represent important parameters in the field of comparison of tissue products. Both manual and automated methods exist, but the procedure described in this part of ISO 12625 refers to manual devices only. The reason is that precision results obtained with the different automatic methods includ
27、ed in an interlaboratory study were not acceptable compared with the results obtained using the manual testing method. Nevertheless, automated test methods may be used, provided that they can be shown to give the same results as the manual method, in terms of average values and standard deviations.
28、4DIN EN ISO 12625-8:2011-04 EN ISO 12625-8:2010 (E) 1 Scope This part of ISO 12625 specifies a basket-immersion test method for the determination of water-absorption time and water-absorption capacity of tissue paper and tissue products. It is expressly stated that the detection of impurities and co
29、ntraries in tissue paper and tissue products be applied according to ISO 15755. For the determination of moisture content in tissue paper and tissue products, ISO 287 is applicable. 2 Normative references The following referenced documents are indispensable for the application of this document. For
30、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 conditioning and testing
31、and procedure for monitoring the atmosphere and conditioning of samples ISO 14487, Pulps Standard water for physical testing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 absorption time time required for complete wetting of a sample 3.2 wa
32、ter-absorption capacity mass of water that is absorbed per unit mass of the test piece under specified conditions 4 Principle A test piece of the tissue paper or a tissue product is placed in a cylindrical basket and allowed to immerse in water under its own weight. The time required for complete we
33、tting of the test piece is measured, the mass of water absorbed then being determined after a stated immersion time followed by a given draining time, under specified conditions. 5DIN EN ISO 12625-8:2011-04 EN ISO 12625-8:2010 (E) 5 Reagent 5.1 Deionized water, with a conductivity u0,25 mS/m at 25 C
34、, in accordance with ISO 14487. The water temperature should be maintained during the test at the temperature used for conditioning and testing. To avoid interference due to contamination of the water from previous test pieces, change the water after each series of tests. 6 Preparation and condition
35、ing of the test pieces 6.1 Sampling If the tests are being made to evaluate a lot, select the sample in accordance with ISO 186. When sampling finished roll products, eliminate at least the first six layers and the last six layers because of the possible presence of adhesive or mechanical damage. If
36、 the tests are made on another type of sample, make sure that the test pieces taken are representative of the sample received. 6.2 Conditioning Condition the test pieces in accordance with ISO 187. 6.3 Preparation of test pieces From the sample, prepare five test pieces by cutting test pieces of (76
37、 g114 1) mm width and with the length in the machine direction sufficient for the mass of each test piece to be (5,0 g114 0,2) g. When preparing test pieces comprising a number of superimposed sheets, all individual sheets shall have the same face up. If several sheets are cut at once, separate them
38、 before testing. Record the mass of each test piece, mo, in grams, to two decimal places. Other test piece sizes could be agreed between the parties concerned. If another test piece size is used, the dimensions shall be reported in the test report. 7 Manual test method 7.1 Apparatus 7.1.1 Water cont
39、ainer, large enough for the basket to be fully submerged when lying on its side (total volume of at least 3 l). The container shall be filled with deionized water (5.1) to a depth of 100 mm. 7.1.2 Draining equipment, comprising a support which is adjusted so that the hanging cylindrical basket forms
40、 a (30 g114 3) angle with the horizontal (see Figure 1). 6DIN EN ISO 12625-8:2011-04 EN ISO 12625-8:2010 (E) Figure 1 Principle of drainage position 7.1.3 Timer, accurate to within g1140,01 s within a range of 60 s. 7.1.4 Balance, with an accuracy of 0,001 g. 7.1.5 Cylindrical basket, having the dim
41、ensions shown in Figure 2, constructed from any non-corroding steel gauge wire of g168 0,5 mm to yield a total mass of (3,0 g114 0,1) g. Dimensions in millimetres Figure 2 Schematic drawing of the cylindrical basket 7DIN EN ISO 12625-8:2011-04 EN ISO 12625-8:2010 (E) 7.2 Procedure 7.2.1 Record the m
42、ass of the basket, mb, in grams, to two decimal places. 7.2.2 Roll the test piece such that it matches the curvature of the cylindrical basket. Do not fold it. Place the weighted test piece in the cylindrical basket (7.1.5) so that it is loosely packed with its 76 mm edge parallel to the side of the
43、 basket. 7.2.3 Place the test piece in the cylindrical basket. Position the cylindrical basket at a distance of (25 g114 5) mm from the water surface maintained in a horizontal position. 7.2.4 Maintaining the horizontal orientation, release the cylindrical basket into the water and simultaneously st
44、art the timer (7.1.3). 7.2.5 Observe the wetting of the test piece to determine the moment that complete wetting occurs. 7.2.6 Stop the timer and record the time required for complete wetting of the test piece. 7.2.7 After the exact moment that the complete wetting of the sample is achieved (see 7.2
45、.6), allow the cylindrical basket and test piece to remain submerged in the water for a further (30 g114 1) s. NOTE One or two timers can be used to perform the measurements described in 7.2.6 and 7.2.7. 7.2.8 At the exact moment the 30 s immersion period of 7.2.7 is complete, remove the cylindrical
46、 basket from the water, keeping it in a horizontal position. Allow the timer to continue to run. 7.2.9 Hang the cylindrical basket containing the wetted test piece on the support (see 7.1.2) at the required 30 angle to the horizontal. 7.2.10 Allow the test piece to drain for a further (60 g114 1) s.
47、 7.2.11 Immediately weigh the cylindrical basket and test piece. Record the mass, mn, in grams, to two decimal places. 7.2.12 Repeat the procedure with each of the remaining four test pieces. 7.2.13 Change the water after each series of five tests. 8 Calculation and expression of results Calculate t
48、he mean water-absorption time, and the standard deviation of the five replicate tests, in seconds. Report the water-absorption time, in seconds, to the nearest 0,1 s. Calculate the water-absorption capacity, Wa, in grams of water per gram of each test piece, from Equation (1): nobaommmWmg16g16g32 (1
49、) where mnis the mass of the cylindrical basket and its contents after submersion and draining, in grams, to two decimal places; mois the dry mass of each test piece, in grams, to two decimal places; mbis the mass of the cylindrical basket, in grams, to two decimal places. Calculate the mean water-absorption capacity as the average of the five replicate tests, in grams of water per gram of the test piece. 8DIN EN ISO 12625-8:2011-04 EN ISO 12625-8:2010 (E) 9 Test report The test report shall include the fol
