1、BRITISH STANDARD BS EN ISO 9073-2:1997 Textiles Testmethods for nonwovens Part 2: Determination of thickness The European Standard EN ISO 9073-2:1996 has the status of a British Standard ICS 59.080.30BSEN ISO 9073-2:1997 This British Standard, having been prepared under the direction of the Sector B
2、oard for Materials and Chemicals, was published under the authority of the Standards Board and comes intoeffect on 15 March 1997 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference TCI/24 Draft for comment 93/307687 DC ISBN 0 580 26632 X Committees respo
3、nsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee TCI/24, Physical testing of textiles, upon which the following bodies were represented: Association of Consulting Scientists Association of Suppliers to the British Clothing Industry Britis
4、h Apparel and Textile Confederation British Measurement and Testing Association British Polyolefin Textiles Association British Retail Consortium British Textile Machinery Association British Textile Technology Group British Throwsters Association International Wool Secretariat Ministry of Defence R
5、oyal Pharmaceutical Society of Great Britain SATRA Footwear Technology Centre Soap and Detergent Industry Association Society of Dyers and Colourists Textile Finishers Association Textile Institute United Kingdom Accreditation Service The following bodies were also represented in the drafting of the
6、 standard, through subcommittees and panels: British Clothing Industry Association Department of Health European Sterilization Packaging Association (UK) Guild of Hospital Pharmacists Institute of Sterile Services Management Medical Sterile Products Association National Wool Textile Export Corporati
7、on Surgical Dressings Manufacturers Association Amendments issued since publication Amd. No. Date CommentsBS EN ISO 9073-2:1997 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Pr
8、inciple 3 5 Apparatus 3 6 Sampling 4 7 Preparation and conditioning of test pieces 5 8 Preliminary procedure 5 9 Procedure 5 10 Expression of results 6 11 Test report 6 Annex ZA (normative) Normative references to international publications with their relevant European publications 7 Figure 1 Test a
9、pparatus for bulky nonwovens with a maximum thickness of 20 mm 4 Figure 2 Test apparatus for bulky nonwovens with a thickness greater than 20 mm 5 List of references Inside back coverBSEN ISO 9073-2:1997 ii BSI 11-1998 National foreword This British Standard has been prepared by Technical Committee
10、TCI/24 and is the English language version of EN ISO 9073-2:1996 Textiles Test methods for nonwovens Part 2: Determination of thickness published by the European Committee for Standardization (CEN). It is identical with ISO 9073-2:1995 published by the International Organization for Standardization
11、(ISO). This standard supersedes BS EN 29073-2:1992, which is withdrawn. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer im
12、munity from legal obligations. Cross-references Publication referred to Corresponding British Standard EN 20139:1992 (ISO 139:1973) BS EN 20139:1992 Textiles. Standard atmospheres for conditioning and testing EN ISO 186:1996 (ISO 186:1994) BS EN ISO 186:1996 Paper and board Sampling to determine ave
13、rage quality Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theENISOtitle page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in
14、 the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9073-2 October 1996 ICS 59.080.30 Supersedes EN 29073-2:1992 Descriptors: Textiles, fabrics, non-woven fabrics, tests, thickness measurement English version Textiles Test methods for nonwovens Part
15、 2: Determination of thickness (ISO 9073-2:1995) Textiles Mthodes dessai pour nontisss Partie 2: Dtermination de lpaisseur (ISO 9073-2:1995) Textilien Prfverfahren fr Vliesstoffe Teil 2: Bestimmung der Dicke (ISO 9073-2:1995) This European Standard was approved by CEN on 1996-09-28. CEN members are
16、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 references concerning such national standards may be obtained on application to th
17、e Central Secretariat 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 member into its own language and notified to the Central Secretariat has the same stat
18、us as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Com
19、it Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN ISO 9073-2:1996 EENISO 9073-2:1996 BSI 11-1998 2 Foreword The text of the International Standard from Technical Committee ISO/TC 38 “
20、Textiles” of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC 248 “Textile and textile products”, the secretariat of which is held by BSI. This European Standard supersedes EN 29073-2:1992. ISO 9073 consists of the foll
21、owing Parts, with the general title “Textiles Test methods for nonwovens”: Part 1: Determination of mass of per unit area; Part 2: Determination of thickness; Part 3: Determination of tensile strength and elongation; Part 4: Determination of tear resistance. This European Standard shall be given the
22、 status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 1997, and conflicting national standards shall be withdrawn at the latest by April 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
23、 following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. NOTENormative references to International Standards
24、 are listed in annex ZA (normative).ENISO 9073-2:1996 BSI 11-1998 3 Introduction Although nonwovens are classified within the textile industry, it should be recognized that nonwovens technologically share characteristics not only with textile products but also with paper and/or plastic products. The
25、re is an existing international textile test for the determination of thickness, ISO 5084: Textiles Determination of the thickness of textiles and textile products (other than textile floor coverings, nonwovens and geotextiles) to be published (revision of ISO5084:1977). However, in order to meet th
26、e specific needs of nonwovens, alternative requirements to those listed in ISO 5084 are specified in this part of ISO 9073. These are a) a different sampling procedure; b) specific pressures at which to test normal and bulky nonwovens; c) a specific area for the size of the presser-foot; d) a shorte
27、r time to note the gauge reading. 1 Scope This part of ISO 9073 specifies methods for the determination of the thickness, when under a specific pressure, of normal and bulky nonwoven textiles. 2 Normative references The following standards contain provisions which, through reference in this text, co
28、nstitute provisions of this part of ISO 9073. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 9073 are encouraged to investigate the possibility of applying the most recent editions of the stand
29、ards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 139:1973, Textiles Standard atmospheres for conditioning and testing. ISO 186:1994, Paper and board Sampling to determine average quality. 3 Definitions For the purposes of this part of IS
30、O 9073, the following definitions apply. 3.1 bulky nonwoven nonwoven textile which is compressible by 20 % or more when the pressure applied changes from0,1kPa to 0,5 kPa 3.2 thickness distance between the face and back of a nonwoven, measured as the distance between a reference plate on which the n
31、onwoven rests and a parallel presser-foot that is applying a pressure to the nonwoven 4 Principle Measurement of the thickness of a nonwoven as the distance between the reference plate on which the nonwoven rests and a parallel presser-foot that exerts a specified pressure on the area under test. 5
32、Apparatus 5.1 For normal nonwovens 5.1.1 Two circular horizontal plates, attached to a stand, comprising an upper plate, or presser-foot, capable of moving vertically and having an area of approximately 2 500 mm 2 , and a reference plate having a plane surface of diameter at least 50 mm greater than
33、 that of the presser-foot. 5.1.2 Measuring device, having a scale with0,01mm graduations, for measuring the distance between the reference plate and the presser-foot (5.1.1). 5.2 For bulky nonwovens with a maximum thickness of 20 mm NOTE 1An example of suitable test apparatus is shown inFigure 1. 5.
34、2.1 Vertical reference plate, with an area of1000mm 2 , presser-foot with an area of2500mm 2 , and equipment to suspend the test piece vertically between them. 5.2.2 Elbow lever, with both arms of equal length, attached to the reference plate and capable of being balanced using a counterweight so th
35、at it exerts a very small force to the left when the balance weight(5.2.4) is not in position. The geometry of the lever is such that the balance weight gives a measuring pressure of 0,02 kPa. 5.2.3 Electrical contacts, which, when closed, cause a small bulb to become illuminated.ENISO 9073-2:1996 4
36、 BSI 11-1998 5.2.4 Balance weight, with a mass of2,05g0,05 g, which, when in position, causes the contacts (5.2.3) to separate and extinguish the bulb. 5.2.5 Screw, which, when turned, drives the presser-foot to the left and presses the test piece with increasing pressure against the reference plate
37、 until the force on the balance is overcome and the bulb becomes illuminated. 5.2.6 Dial-gauge, to indicate the distance, in millimetres, between the reference plate and the presser-foot corresponding to the thickness of the test piece at the pressure applied. 5.3 For bulky nonwovens with a thicknes
38、s greater than 20 mm NOTE 2An example of suitable test apparatus is shown inFigure 2. 5.3.1 Horizontal square base plate, measuring300mm 300 mm, having a smooth surface. In the centre of one side is a vertical scaleM with graduations in millimetres, on which is placed a horizontal measuring bar B, w
39、hich is movable in a vertical direction. This bar supports an adjustable vertical probe T at a distance of100mm from the vertical scale. NOTE 3The vertical probe T should be above the centre of the measuring plate P when in use (see 9.3.2), such that the measuring plate is not in contact with the sc
40、ale. 5.3.2 Square measuring plate P, measuring(200mm 0,2 mm) (200 mm 0,2 mm) and a mass of 82 g 2 g, made of glass with a thickness of0,7mm, which can be brought to the required mass by the addition of weight-pieces to give a measuring pressure of 0,02kPa. NOTE 4If additional weight-pieces are neces
41、sary, they should be distributed symmetrically so that there is even pressure over the whole area of the plate. 5.4 Stopwatch 6 Sampling Carry out sampling in accordance with ISO 186, ensuring that the areas from which the specimens are taken have no visible flaws and are not creased. NOTE 5This met
42、hod of sampling recognizes and makes provisions for “anisotropy” (differences in properties along various directions, principally machine and cross directions) in the final specimens. However, these specimens are random representatives of the material and in some cases it may be desirable to investi
43、gate systematic variations of properties (including anisotropy), for example across the width, or in certain positions along the length, of a given reel. In all such cases, special provisions should be agreed between purchaser and vendor and recorded in the test report. A procedure for more detailed
44、 examination of variability within a given batch of material is available in TAPPI T 74-05-11 and may be found helpful. This publication may be obtained from: The Technical Association of Pulp and Paper Industries, 1 Dunwoody Park, Atlanta, GA 30338, USA. Figure 1 Test apparatus for bulky nonwovens
45、with a maximum thickness of 20 mmENISO 9073-2:1996 BSI 11-1998 5 7 Preparation and conditioning of test pieces 7.1 If the method of test A, B or C (see clause 9) has not been determined, cut 10 preliminary test pieces, each having an area larger than 2 500 mm 2 , and, after conditioning, carry out t
46、he procedure described in clause 8. 7.2 For normal nonwovens, cut 10 test pieces, each having an area larger than 2 500 mm 2 . 7.3 For bulky nonwovens with a maximum thickness of 20 mm, cut 10 test pieces, each having an area of (130 mm 5 mm) (80 mm 5 mm). 7.4 For bulky nonwovens with a thickness gr
47、eater than 20mm, cut 10 test pieces, each having an area of (200 mm 0,2 mm) (200 mm 0,2 mm). 7.5 Condition the test pieces as specified in ISO 139. 8 Preliminary procedure 8.1 Carry out the tests in the standard atmosphere for testing (see ISO 139). 8.2 Using the apparatus specified in 5.1, adjust t
48、he load on the presser-foot according to the manufacturers instructions to give a uniform pressure of 0,1kPa and set the measuring device to zero. 8.3 Raise the presser-foot and place the preliminary test piece (7.1) carefully, without tension, on the reference plate. Ensure the test piece is positi
49、oned centrally with respect to the presser-foot. Lower the presser-foot carefully until contact is made with the test piece. 8.4 Leave in contact for 10 s, adjust the measuring device to measure the thickness of the sample, and note the reading, in millimetres. 8.5 Repeat the procedure for the other nine test pieces. 8.6 Adjust the load on the presser-foot according to the manufacturers instructions to give a uniform pressure of 0,5 kPa and adjust the measuring device to zero. Repeat the mea
