DIN EN ISO 9073-16-2009 Textiles - Test methods for nonwovens - Part 16 Determination of resistance to penetration by water (hydrostatic pressure) (ISO 9073-16 2007) English versio.pdf

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1、January 2009DEUTSCHE 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!$U(u“1500582w

2、ww.din.deDDIN EN ISO 9073-16Textiles Test methods for nonwovens Part 16: Determination of resistance to penetration by water (hydrostaticpressure) (ISO 9073-16:2007)English version of DIN EN ISO 9073-16:2009-01Textilien Prfverfahren fr Vliesstoffe Teil 16: Bewertung der Wasserdichtheit (Hydrostatisc

3、her Druckversuch)(ISO 9073-16:2007)Englische Fassung DIN EN ISO 9073-16:2009-01www.beuth.deDocument comprises 14 pagesDIN EN ISO 9073-16:2009-01 2 National foreword This standard has been published in accordance with a decision taken by Technical Committee CEN/TC 248 “Textiles and textile products”

4、(Secretariat: BSI, United Kingdom) to adopt International Standard ISO 9073-16:2007 as a European Standard. ISO 9073-16:2007 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 i

5、n work on the subject. The Normenausschuss Materialprfung (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: Det

6、ermination 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 5: Determination of resistance to mechanical penetration (ball burst procedure) Part 6: Absorption Part 7: Determination of bendi

7、ng length Part 8: Determination of liquid strike-through time (simulated urine) Part 9: Determination 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-through time Part

8、 14: Coverstock wetback Part 15: Determination of air permeability Part 16: Determination of resistance to penetration by water (hydrostatic pressure) Part 17: Determination of water penetration (spray impact) Part 18: Determination of breaking strength and elongation of nonwoven materials using the

9、 grab tensile test Part 1 and Part 3 of ISO 9073 are only available as International Standards. DIN EN ISO 9073-16:2009-01 3 The DIN Standards corresponding to the International Standards referred to in the EN are as follows: ISO 139 DIN EN ISO 139 ISO 3696 DIN ISO 3696 ISO 10012 DIN EN ISO 10012 Na

10、tional Annex NA (informative) Bibliography DIN EN ISO 139, Textiles Standard atmospheres for conditioning and testing DIN ISO 3696, Water for analytical laboratory use Specification and test methods DIN EN ISO 10012, Measurement management systems Requirements for measurement processes and measuring

11、 equipment DIN EN ISO 9073-16:2009-01 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9073-16 October 2008 ICS 59.080.30 English Version Textiles - Test methods for nonwovens - Part 16: Determination of resistance to penetration by water (hydrostatic press

12、ure) (ISO 9073-16:2007) Textiles - Mthodes dessai pour nontisss - Partie 16: Dtermination de la rsistance la pntration de leau (pression hydrostatique) (ISO 9073-16:2007) Textilien - Prfverfahren fr Vliesstoffe - Teil 16: Bewertung der Wasserdichtheit (Hydrostatischer Druckversuch) (ISO 9073-16:2007

13、) This European Standard was approved by CEN on 25 September 2008. CEN members are bound to comply with the CEN/CENELEC Internal 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

14、 references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. 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 m

15、ember into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy

16、, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-105

17、0 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9073-16:2008: EContents Page 2 DIN EN ISO 9073-16:2009-01EN ISO 9073-16:2008 (E) Foreword .3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 Principl

18、e .5 5 Apparatus.5 6 Calibration7 7 Procedure.7 8 Calculation .8 9 Test report8 Annex A (informative) General information regarding reproducibility.10 Foreword 3 EN ISO 9073-16:2008 (E) DIN EN ISO 9073-16:2009-01The text of ISO 9073-16:2007 has been prepared by Technical Committee ISO/TC 38 “Textile

19、s” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 9073-16:2008 by Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by

20、publication of an identical text or by endorsement, at the latest by April 2009, and conflicting national standards shall be withdrawn at the latest by April 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC

21、 shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark,

22、 Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 9073-16:2007 has been approved

23、 by CEN as a EN ISO 9073-16:2008 without any modification. 1 Scope This part of ISO 9073 describes the hydrostatic pressure test that measures the resistance of nonwoven fabrics to the penetration of water under varied hydrostatic head pressures. This part of ISO 9073 applies to any nonwoven fabrics

24、 which are intended for use as a barrier to the penetration of fluids. 2 Normative 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

25、document (including any amendments) applies. ISO 139, Textiles Standard atmospheres for conditioning and testing ISO 3696, Water for analytical laboratory use Specification and test methods ISO 3951-5, Sampling procedures for inspection by variables Part 5: Sequential sampling plans indexed by accep

26、tance quality limit (AQL) for inspection by variables (known standard deviation) ISO 10012:2003, Measurement management systems Requirements for measurement processes and measuring equipment 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 hec

27、topascal millibar unit of atmospheric pressure equal to 100 N/m2or 0,000 981 m of a water column 3.2 water resistance of nonwoven materials fabric characteristics which are resistant to wetting and penetration by water 4 DIN EN ISO 9073-16:2009-01EN ISO 9073-16:2008 (E) 4 Principle A nonwoven fabric

28、 specimen is mounted to form the cover on the test-head reservoir. This specimen is subjected to a standardized water pressure increase at a constant rate, until leakage appears on the outer surface of the nonwoven. The test results for the hydrostatic water pressure test are measured at the point w

29、here the first drops appear in three separate areas on the specimen. 5 Apparatus 5.1 Hydrostatic testing apparatus, with the following components: (see Figures 1 and 2 for examples of two different types of hydrostatic head-testing equipment) 5.1.1 A levelling mechanism that maintains the specimen h

30、orizontally. 5.1.2 A clamping mechanism which does not allow water leakage, specimen damage or specimen slippage. 5.1.3 A means of maintaining the temperature of the water that comes into contact with the specimen (from below or above) at (23 2) C. NOTE Alternative temperatures can be used, if agree

31、d by interested parties and noted in the test report. 5.1.4 A means of controlling the rate of increase of the water pressure, at either (10 0,5) cm H2O/min or (60 3) cm H2O/min. 5.1.5 A test-head reservoir with a circular test area of (100 1) cm2. NOTE Other sizes can be used if agreed between inte

32、rested parties and noted in the test eport. 5.2 Optional nylon netting, 20 cm 20 cm square piece of netting with approximately 3 cm holes. When testing some nonwovens that exhibit low tensile strength, such as a meltblown fabric, a nylon web or net screen may be used to support the sample. This woul

33、d simulate the effect of a bonded laminate and prevent the weight of the water from tearing or stretching the material. The use of the nylon support should be agreed upon by all parties and all parties should be fully aware of its effects. The test in this part of ISO 9073 is normally done without t

34、he use of the nylon support. 5.3 Stop watch, calibrated to 0,1 s. 5.4 Cutting dies or templates, to cut specimens having dimensions at least equal to the area of the clamping surfaces of the test apparatus (optional), or paper cutter. 5 EN ISO 9073-16:2008 (E) DIN EN ISO 9073-16:2009-01Key 1 worm ge

35、ar 8 beaded chain 2 motor 9 specimen 3 weight 10 lower plate 4 heated water supply 11 light 5 motor switch 12 mirror 6 clamping valve lever 13 drain 7 upper plate 14 sink Figure 1 Example of suitable test equipment 6 DIN EN ISO 9073-16:2009-01EN ISO 9073-16:2008 (E) Key 1 pressure mechanism 2 pressu

36、rizing system 3 measuring area 4 frame Figure 2 Alternative test equipment 6 Calibration 6.1 The metrological confirmation of the test apparatus shall be in compliance with Clause 7, Figure 2 and Annex A of ISO 10012:2003; also use the following steps: The set-up procedures for machines from differe

37、nt manufacturers may vary. Prepare and verify calibration of the hydrostatic tester as directed in the manufacturers instructions. 6.2 For the best results, level the test instrument. 6.3 Verify calibration for the range of water pressure expected for the material to be tested. 6.4 If a column of wa

38、ter is used, be sure to calibrate the incoming water supply for a rate of (10 0,5) cm H2O/min or (60 3) cm H2O/min and a temperature of (23 2) C. 7 Procedure 7.1 Prepare the samples in accordance with ISO 3951-5. Unless otherwise specified, test five specimens, evenly spaced across the available cro

39、ss-directional width, from each sample. 7.2 Bring the specimens from the prevailing atmosphere to moisture equilibrium for testing in the standard atmosphere as specified in ISO 139. If agreed upon by all parties, conditioning and testing may be carried out without preconditioning the test specimens

40、. 7 EN ISO 9073-16:2008 (E) DIN EN ISO 9073-16:2009-01Care in handling should be observed so that specimens do not contact any contaminants, such as soap, salt, oil, etc., which might facilitate or hinder water penetration. No dirt or other foreign material should be allowed on the specimen. 7.3 Spe

41、cimens should be cut large enough to be tested on the 100 cm2head, or they may be left in long strips if this is compatible with the test equipment. 7.4 Fresh grade 3 water complying with ISO 3696 should be provided for the testing of each new specimen. 7.5 Carefully clean the clamping surfaces of a

42、ll water and debris, and of anything that could alter the seal. 7.6 Carefully place the test specimen on the test head, close the clamps and start the test. If the test equipment has a water reservoir in the test head, be sure that the water forms a convex surface. Carefully slide the specimen onto

43、the surface of the water in the test head so that the face of the specimen is in contact with the water. Do not allow air to be caught under the specimen. 7.7 Observe the specimen surface and watch for water passing through the specimen. The test is complete when three separate drops are formed. How

44、ever, these drops should form three different penetrating holes. Read the water pressure from the display or read the centimetres from the manometer. 8 Calculation 8.1 Report the water penetration of individual specimens. Record, in centimetres/millibars, the height of the water when penetration of

45、the material took place. If other units are read, convert to centimetres if necessary. 8.2 Report the water penetration average. Calculate the average height of the water when penetration took place. Calculate the average test results for each laboratory sample. 8.3 Calculate the standard deviation

46、and coefficient of variation of the test (if required) to the nearest hectopascal or centimetre in accordance with Table 1. Report the average and standard deviation of the results obtained from at least five specimens. Table 1 Reporting precision Up to 100 hPa 0,5 hPa Up to 1 m H2O 0,5 cm Over 100

47、hPa 1,0 hPa Over 1 m H2O 1,0 cm8.4 When data are automatically computer-processed, calculations are generally contained in the associated software. It is recommended that computer-processed data be verified against known property values and its software described in the test report. 9 Test report Th

48、e test report shall include the following information: a reference to this part of ISO 9073; type or designation of material tested; where the water pressure was applied, from below or above the specimen; water temperature used, (23 2) C or another agreed temperature; rate of increase of water press

49、ure, (10 cm H2O/min or 60 cm H2O/min); 8 DIN EN ISO 9073-16:2009-01EN ISO 9073-16:2008 (E) side of the fabric tested, face or anvil; number of samples/specimens tested; testing conditions; identification of software used, if data was computer-processed; individual results and their averages; any deviation from the procedure described in this part of ISO 9073; average and standard deviation of the hydrostatic head (expressed in cm H2O/min or HPa/min). 9 EN