1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 13: Repeated liquid strike-through timeThe European Standard EN ISO 9073-13:2007 has the statu
2、s of a British StandardICS 59.080.30Textiles Test methods for nonwovens BRITISH STANDARDBS EN ISO 9073-13:2007BS EN ISO 9073-13:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 March 2007 BSI 2007ISBN 978 0 580 50384 9Amendments issued
3、since publicationAmd. No. Date Commentscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of EN ISO 9073-13:2007. It is i
4、dentical with ISO 9073-13:2006.The UK participation in its preparation was entrusted to Technical Committee TCI/24, Physical testing of textiles.A list of organizations represented on TCI/24 can be obtained on request to its secretary.This publication does not purport to include all the necessary pr
5、ovisions of a EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 9073-13February 2007ICS 59.080.30English VersionTextiles - Test methods for nonwovens - Part 13: Repeatedliquid strike-through time (ISO 9073-13:2006)Textiles - Mthodes dessai pour nontisss - Partie 13:Temps de transpercement succes
6、sifs des liquides (ISO9073-13:2006)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 Internal Regulations which stipulate t
7、he conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in
8、 three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of
9、 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, Switzerland and United Kingdom.EUROPEAN CO
10、MMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 9073-13:2007: EForeword The text o
11、f ISO 9073-13:2006 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
12、 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 August 2007, and conflicting national standards shall be withdrawn at the latest by August 2007. According to the CEN/CENELEC Internal Regulations, the
13、national standards 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, Norw
14、ay, Poland, 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. EN ISO 9073-13:2007Reference numberISO 9073-13:2006(E)INTERNATIONAL STANDARD IS
15、O9073-13First edition2006-04-01Textiles Test methods for nonwovens Part 13: Repeated liquid strike-through time Textiles Mthodes dessai pour nontisss Partie 13: Temps de transpercement successifs des liquides EN ISO 9073-13:2007ii iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3
16、 Principle. 1 4 Material and reagents. 1 5 Apparatus 2 6 Procedure 2 7 Test report . 3 8 Precision 3 Annex A (informative) Precision . 6 Bibliography . 7 EN ISO 9073-13:2007iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS
17、O member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, gove
18、rnmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC
19、Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member
20、 bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 9073-13 was prepared by Technical Committee ISO/TC 38, Textiles. ISO 9073
21、 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 of thickness Part 3: Determination of tensile strength and elongation Part 4: Determination of tear resistance Part 6: Absorption Part 7: D
22、etermination of bending length Part 8: Determination of liquid strike-through time (simulated urine) Part 9: Evaluation of drapability including drape coefficient Part 10: Lint and other particles generation in the dry state Part 11: Run-off Part 12: Demand absorbency Part 13: Repeated liquid strike
23、-through time Part 14: Coverstock wetback The following parts are under preparation: Part 15: Evaluation of air permeability Part 16: Evaluation of water resistance (hydrostatic pressure test) EN ISO 9073-13:2007v Part 17: Evaluation of water penetration (spray impact) test Part 18: Determination of
24、 breaking strength and elongation of nonwoven materials using the grab tensile test EN ISO 9073-13:2007blank1Textiles Test methods for nonwovens Part 13: Repeated liquid strike-through time 1 Scope This part of ISO 9073 specifies a test method for measuring the strike-through time (STT) for each of
25、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 standard absorbent pad. This test method is inten
26、ded 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 of this document. For dated references, only
27、 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: Absorption 3 Principle Three subsequent doses o
28、f 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 electronically, using conductometric detection. The abs
29、orbent 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 determinations without the nonwoven, shall be withi
30、n (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) mN/m at (23 2) C. This surface tension shoul
31、d be checked before each series of tests, as surface tension may change during storage. EN ISO 9073-13:20072 5 Apparatus 5.1 Burette, 50 ml capacity, with supporting stand, or 5 ml pipette. 5.2 Liquid dispenser with conductometric endpoint detection of liquid absorption that consists of the followin
32、g 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 time. Fits with strike-through plate (5.2.4). 5.2.
33、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 shall be positioned as shown in Figures 1 and 2. The
34、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 acrylic sheet, approximately 125 mm 125 mm square and
35、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 Stopwatch, capable of measuring 60 s to an accuracy
36、 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, if applicable. 6.3 Prepare 1 set of 10 plies of
37、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 direction of liquid flow during the test corresponds
38、 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 the centre of the plate approximately over the ce
39、ntre 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 the dispensing tip is (45 1) mm above the top of th
40、e 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 the convenience of users of this part of ISO 9073
41、and does not constitute an endorsement by ISO of this product. EN ISO 9073-13:200736.7 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 keeping the discharge valve of the funnel closed. 6.9 Open t
42、he 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 and dropped below the level of the electrodes in the strik
43、e-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 the funnel. 6.12 As the stopwatch reads 60 s, repeat steps
44、 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 before testing the next piece of nonwoven. 6.15 Repeat th
45、e 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 the STT comes out exceedingly long ( 5 the intra-lab stand
46、ard 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 information: a) complete identification of the nonwoven mat
47、erial; 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 deviation for all of the STT-1, respectively STT-2 and S
48、TT-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 established by inter-laboratory tests carried out in 2000 b
49、y 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. EN ISO 9073-13:20074 Dimensions in millimetres Key 1 optional weighing strips 2 strike-through plate (transparent acrylic sheet) 3 electrodes (1,6 mm in diameter) Figure 1 Strike-through plate EN ISO 9073-13:20075Key 1 wire electrodes (1,6 mm in diameter) Figure 2 Section across strike-
