1、May 2007DEUTSCHE NORM English price group 9No part of this standard 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 59.080.30!,xb0“9856313www.d
2、in.deDDIN EN ISO 9073-13Textiles Test methods for nonwovens Part 13: Repeated liquid strike-through time (ISO 9073-13:2006)English version of DIN EN ISO 9073-13:2007-05Textilien Prfverfahren fr Vliesstoffe Teil 13: Wiederholte Durchdringzeit von Flssigkeiten (ISO 9073-13:2006)Englische Fassung DIN E
3、N ISO 9073-13:2007-05www.beuth.deDocument comprises 14 pages 08.07DIN EN ISO 9073-13:2007-05 2 National foreword This standard has been published in accordance with a decision taken by Technical Committee CEN/TC 248 “Textiles and textile products” (Secretariat: BSI, United Kingdom) to adopt Internat
4、ional Standard ISO 9073-13:2006 as a European Standard. ISO 9073-13 was prepared by Technical Committee ISO/TC 38 “Textiles”. At present a DIN committee does not exist for this standard since the parties concerned have not shown any interest in work on the subject. The Normenausschuss Materialprfung
5、 (Materials Testing Standards Committee) is obliged to publish the standard, however, as the subject falls in its domain. DIN EN ISO 9073 consists of the following parts, under the general title “Textiles Test methods for nonwovens”: Part 1: Determination of mass per unit area Part 2: Determination
6、of thickness Part 3: Determination of tensile strength and elongation Part 4: Determination of tear resistance Part 6: Absorption Part 7: Determination of bending length Part 8: Determination of liquid strike-through time (simulated urine) Part 9: Evaluation of drapability including drape coefficien
7、t Part 10: Lint and other particles generation in the dry state Part 11: Run-off Part 12: Demand absorbency Part 13: Repeated liquid strike-through time Part 14: Coverstock wetback The following parts are under preparation: Part 15: Evaluation of air permeability Part 16: Evaluation of water resista
8、nce (hydrostatic pressure test) Part 17: Evaluation of water penetration (spray impact) test Part 18: Determination of breaking strength and elongation of nonwoven materials using the grab tensile test The DIN Standards corresponding to the International Standards referred to in the EN are as follow
9、s: ISO 186 DIN EN ISO 186 ISO 9073-6 DIN EN ISO 9073-6 DIN EN ISO 9073-13:2007-05 3 National Annex NA (informative) Bibliography DIN EN ISO 186, Paper and board Sampling to determine average quality DIN EN ISO 9073-6, Textiles Test methods for nonwovens Part 6: Absorption DIN EN ISO 9073-13:2007-05
10、4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9073-13 February 2007 ICS 59.080.30 English Version Textiles - Test methods for nonwovens - Part 13: Repeated liquid strike-through time (ISO 9073-13:2006) Textiles - Mthodes dessai pour nontisss - Partie 13:
11、 Temps de transpercement successifs des liquides (ISO 9073-13:2006) Textilien - Prfverfahren fr Vliesstoffe - Teil 13: Wiederholte Durchdringzeit von Flssigkeiten (ISO 9073-13:2006) This European Standard was approved by CEN on 21 January 2007. CEN members are bound to comply with the CEN/CENELEC In
12、ternal Regulations 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 Management Centre or to any CEN m
13、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 Management Centre has the same status as the official versions. CEN me
14、mbers are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden
15、, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
16、Ref. No. EN ISO 9073-13:2007: EContents Page 1 Scope . 2 Normative references . 3 Principle. 4 Material and reagents. 5 Apparatus 6 Procedure 7 Test report . 8 Precision Annex A (informative) Precision . 2 EN ISO 9073-13:2007 (E) . 344 44556 6910Foreword Bibliography .Foreword The text of ISO 9073-1
17、3:2006 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 9073-13:2007 by Technical Committee CEN/TC 248 “Textiles and textile products”, the secretariat of which is held by BSI. This European St
18、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2007, and conflicting national standards shall be withdrawn at the latest by August 2007. According to the CEN/CENELEC Internal Regulations, the national sta
19、ndards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
20、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 9073-13:2006 has been approved by CEN as EN ISO 9073-13:2007 without any modifications. 3 EN ISO 9073-13:2007 (E) 1 Scope This part of ISO 9073 specifies a test method for measuri
21、ng the strike-through time (STT) for each of three subsequent doses of liquid (simulated urine) applied to the surface of a test piece of nonwoven coverstock. The STT is defined as the time taken for a known volume of liquid to pass through the nonwoven that is in contact with an underlying dry stan
22、dard absorbent pad. This test method is intended for quality control and is designed for comparison of STT for different nonwoven coverstocks. It does not simulate in-use conditions for finished products. 2 Normative references The following referenced documents are indispensable for the application
23、 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 9073-6, Textiles Test methods for nonwovens Part 6: Ab
24、sorption 3 Principle Three subsequent doses of simulated urine are discharged at a prescribed rate, and under specified conditions, onto a test piece of nonwoven which is placed on a reference absorbent pad. The time taken for each of the liquid doses to penetrate the nonwoven is measured electronic
25、ally, using conductometric detection. The absorbent pad remains unchanged and wet between the doses. 4 Material and reagents 4.1 Absorbent pad, consisting of ten plies of filter paper (size: 100 mm 100 mm) with the test side upwards, as specified by the supplier. The mean STT, in 10 replicate determ
26、inations without the nonwoven, shall be within (1,7 0,3) s. The liquid absorption capacity, of the paper, as determined by ISO 9073-6, shall be 480 % minimum. 4.2 Simulated urine, consisting of a 9,0 g/l solution of analytical grade sodium chloride in deionized water with a surface tension of (70 2)
27、 mN/m at (23 2) C. This surface tension should be checked before each series of tests, as surface tension may change during storage. 4 EN ISO 9073-13:2007 (E) 5 Apparatus 5.1 Burette, 50 ml capacity, with supporting stand, or 5 ml pipette. 5.2 Liquid dispenser with conductometric endpoint detection
28、of liquid absorption that consists of the following parts: 5.2.1 Funnel, fitted with a magnetic exit valve, giving a rate of discharge of 25 ml in (3,5 0,25) s. 5.2.2 Ring stand, to support the funnel. 5.2.3 Electronic conductivity detector, capable of detecting saline solution with 0,05 s response
29、time. Fits with strike-through plate (5.2.4). 5.2.4 Strike-through plate (see Figures 1 and 2), constructed of 25 mm thick transparent acrylic sheet, of total mass (500 5) g, fitted with corrosion-resistant electrodes consisting of 1,6 mm diameter platinum or stainless steel wire. The electrodes sha
30、ll be positioned as shown in Figures 1 and 2. The plate surface, electrode surface and the star-shaped orifice shall be clean and free from deposits and particulate matter. Clean regularly, e.g. with a mildly abrasive car polish and a dry cloth, and/or hot water. 5.2.5 Baseplate, of transparent acry
31、lic sheet, approximately 125 mm 125 mm square and 5 mm thick. 5.2.6 Electronic timer, for measuring the STT, accurate to 0,01 s. The timer is connected with the conductivity detector (5.2.3) such that as conductive liquid closes/opens the contact between the electrodes, the timer starts/stops. 5.3 S
32、topwatch, capable of measuring 60 s to an accuracy of 1 s. 6 Procedure 6.1 Set up the ring stand holding the funnel. Make sure that the timer and conductivity detector are switched on, and the electrodes are connected. 6.2 Cut a nonwoven test piece, 125 mm 125 mm, selected in accordance with ISO 186
33、, if applicable. 6.3 Prepare 1 set of 10 plies of filter paper, stacking the paper plies on top of each other, test side upwards. 6.4 Place the nonwoven test piece on top of the set of 10 plies of filter paper that are placed on the baseplate of the instrument. Position the nonwoven such that the di
34、rection of liquid flow during the test corresponds with the intended use of the nonwoven. For example, for personal hygiene products, the side of the nonwoven that is intended to be in contact with the users skin shall be facing upwards. 6.5 Place the strike-through plate on top of the nonwoven with
35、 the centre of the plate approximately over the centre of the test piece. Centre the funnel over the orifice in the plate. Where available, for the Lister instrument 1), this corresponds with the position defined by the designated positioning template. 6.6 Adjust the height of the funnel such that t
36、he dispensing tip is (45 1) mm above the top of the instrument baseplate. For Lister equipment, this corresponds to the minimum position of the test head, as defined by the vertical positioning ring. 1) Lister is an example of a suitable product available commercially. This information is given for
37、the convenience of users of this part of ISO 9073 and does not constitute an endorsement by ISO of this product. 5 EN ISO 9073-13:2007 (E) 6.7 Check whether the timer display shows zero. If not, re-set. 6.8 Dispense with the pipette or burette, 5,0 ml of test liquid (4.2) into the funnel, while keep
38、ing the discharge valve of the funnel closed. 6.9 Open the magnetic discharge valve of the funnel to discharge the 5,0 ml of liquid. The initial flow of liquid will complete the electrical circuit and start the electronic timer. The timer will stop when the liquid has penetrated into the nonwoven an
39、d dropped below the level of the electrodes in the strike-through plate. At that time, start the stopwatch. 6.10 Record the time indicated by the electronic timer (STT-1). 6.11 Wait for a time period of 60 s (stopwatch). In this period, dispense a fresh aliquot of 5,0 ml of test liquid (4.2) into th
40、e funnel. 6.12 As the stopwatch reads 60 s, repeat steps 6.9 to 6.11 for measuring the STT of the second dose (STT-2). 6.13 As the stopwatch reads 60 s, repeat steps 6.9 and 6.10 for measuring the STT of the third dose (STT-3). 6.14 Clean and dry the bottom of the electrode plate with a dry tissue b
41、efore testing the next piece of nonwoven. 6.15 Repeat the test procedure for the required number of test pieces. 6.16 Before storage, rinse with deionized water and dry the bottom of the electrode plate with a dry tissue. NOTE Occasionally, the conductivity detector may not detect an endpoint, or th
42、e STT comes out exceedingly long ( 5 the intra-lab standard deviations away from the average), and well after the visually detected endpoint. In that case, discard the result. Upon recurrence, clean the electrode as indicated under 5.2.4. 7 Test report The test report shall include the following inf
43、ormation: a) complete identification of the nonwoven material; b) surface tension of simulated urine, if different from the value specified in 4.2; c) testing conditions; d) individual STT for each of the doses (STT-1, STT-2 and STT-3), to an accuracy of 0,1 s; e) calculate the average and standard
44、deviation for all of the STT-1, respectively STT-2 and STT-3, for replicate test pieces from the same material portion/lot, if required; f) any deviation from the procedure described in this part of ISO 9073. 8 Precision The data for the repeatability and reproducibility of this test method were est
45、ablished by inter-laboratory tests carried out in 2000 by EDANA 2)and are given in Annex A. The evaluation of the laboratory tests was carried out according to ISO 5725-2. 2) EDANA: European Disposables and Nonwovens Association. 6 EN ISO 9073-13:2007 (E) Dimensions in millimetres Key 1 optional wei
46、ghing strips 2 strike-through plate (transparent acrylic sheet) 3 electrodes (1,6 mm in diameter) Figure 1 Strike-through plate 7 EN ISO 9073-13:2007 (E) Key 1 wire electrodes (1,6 mm in diameter) Figure 2 Section across strike-through plate on centreline of 25 mm diameter cavity 8 EN ISO 9073-13:20
47、07 (E) Annex A (informative) Precision Figures for the repeatability and reproducibility of this method are the results of collaborative studies carried out in 2000 by EDANA, with the following data: SAMPLE A aSAMPLE B bSAMPLE C c1st dose 2nd dose 3rd dose 1st dose 2nd dose 3rd dose 1st dose 2nd dos
48、e 3rd dose Number of participating laboratories 7 7 7 7 7 7 7 7 7 Number of non-eliminated laboratories 6 6 6 6 6 6 7 7 7 Number of single values of the non-eliminated laboratories 60 60 60 59 60 59 70 70 68 Average STT (seconds) 1,48 2,59 2,83 1,41 2,73 7,25 2,07 4,82 6,49 Standard deviation of rep
49、eatability, sr0,17 0,14 0,80 0,23 0,28 2,91 0,36 1,55 2,15 Coefficient of repeatability, CVr11,5 % 5,4 % 28,3 % 16,1 % 10,4 % 40,2 % 17,4 % 32,3 % 33,0 %Repeatability limit, r (2,8 sr) 0,48 0,39 2,24 0,63 0,79 8,16 1,00 4,35 6,01 Standard deviation of reproducibility, sR0,33 0,31 0,84 0,37 0,44 3,93 0,43 1,91 2,64 Coefficient of reproducibility, CVR22,5 % 12,2 % 29,7 % 26,4 % 16,0 % 54,2 % 20,9 % 39,7 % 40,6 %Reproducibility limit, R (2,8 sR) 0,93 0,88 2,35 1,04 1,22 11,00 1,21 5,36 7,
