1、BS EN ISO9073-16:2008ICS 59.080.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTextiles Testmethods fornonwovensPart 16: Determination of resistanceto penetration by water (hydrostaticpressure) (ISO 9073-16:2007)This British Standardwas published under theaut
2、hority of the StandardsPolicy and StrategyCommittee on 28 February2009 BSI 2009ISBN 978 0 580 56795 7Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 9073-16:2008National forewordThis British Standard is the UK implementation of EN ISO9073-16:2008. It is identical to ISO 9073-16:
3、2007.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/24, Physical testing of textiles.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contrac
4、t. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 9073-16October 2008ICS 59.080.30English VersionTextiles - Test methods for nonwovens - Part 16: Determinationof r
5、esistance to penetration by water (hydrostatic pressure) (ISO9073-16:2007)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: Bewertungder Wasserdichtheit (h
6、ydrostatischer Druckversuch) (ISO9073-16:2007)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 EuropeanStandard the status of a national standard without any altera
7、tion. 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 three official versions (English, French, German). A version in any other language made by transla
8、tionunder 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 Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Gre
9、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement C
10、entre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 9073-16:2008: EBS EN ISO 9073-16:2008EN ISO 9073-16:2008 (E) 3 Foreword The text of ISO 9073-16:2007 has been prepared by Technical C
11、ommittee ISO/TC 38 “Textiles” 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 na
12、tional standard, either by 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
13、 rights. CEN and/or CENELEC 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, Cypru
14、s, 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 the United Kingdom. Endorsement notice The text of ISO 907
15、3-16:2007 has been approved by CEN as a EN ISO 9073-16:2008 without any modification. BS EN ISO 9073-16:2008ISO 9073-16:2007(E) ISO 2007 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle. 2 5 Apparatus 2 6 Calibration . 4 7
16、 Procedure 4 8 Calculation. 5 9 Test report . 5 Annex A (informative) General information regarding reproducibility 7 BS EN ISO 9073-16:2008ISO 9073-16:2007(E) iv ISO 2007 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national stand
17、ards bodies (ISO 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 orga
18、nizations, governmental 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
19、in the ISO/IEC 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
20、% of the member 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 9073-16 was prepared by Technical Committee ISO/TC 38, Tex
21、tiles. 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 of thickness Part 3: Determination of tensile strength and elongation Part 4: Determination of tear resistance Part 5: Resis
22、tance to mechanical penetration (ball burst procedure) Part 6: Absorption Part 7: Determination of bending 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
23、 dry state Part 11: Run-off Part 12: Demand absorbency Part 13: Repeated liquid strike-through time Part 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 (
24、spray impact) Part 18: Determination of breaking strength and elongation of nonwoven materials using the grab tensile test BS EN ISO 9073-16:2008INTERNATIONAL STANDARD ISO 9073-16:2007(E) ISO 2007 All rights reserved 1Textiles Test methods for nonwovens Part 16: Determination of resistance to penetr
25、ation by water (hydrostatic pressure) 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 which are intended f
26、or 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 document (including a
27、ny 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 acceptance quality limit (
28、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 hectopascal millibar uni
29、t 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 BS EN ISO 9073-16:2008ISO 9073-16:2007(E) 2 ISO 2007 All rights reserved4 Principle A nonwoven fabric
30、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 wh
31、ere 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 ho
32、rizontally. 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 agreed
33、 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 inter
34、ested 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 would
35、 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 th
36、e 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. BS EN ISO 9073-16:2008ISO 9073-16:2007(E) ISO 2007 All rights rese
37、rved 3Key 1 worm gear 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 BS EN ISO 9073-16:2008ISO 9073-16:2007(E) 4 ISO 2007 All rights re
38、servedKey 1 pressure mechanism 2 pressurizing 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-
39、up procedures for machines from different 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 mater
40、ial to be tested. 6.4 If a column of water 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,
41、 evenly spaced across the available cross-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 wit
42、hout preconditioning the test specimens. BS EN ISO 9073-16:2008ISO 9073-16:2007(E) ISO 2007 All rights reserved 5Care 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
43、foreign material should be allowed on the specimen. 7.3 Specimens 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 n
44、ew specimen. 7.5 Carefully clean the clamping surfaces of all 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
45、 forms a convex surface. Carefully slide the specimen onto 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
46、 test is complete when three separate drops are formed. However, 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 centimet
47、res/millibars, the height of the water when penetration of 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 ea
48、ch laboratory sample. 8.3 Calculate the standard deviation 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 pre
49、cision Up to 100 hPa 0,5 hPa Up to 1 m H2O 0,5 cm Over 100 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 The test report shall include the following information: a reference to this part of ISO 9073; type or designati
