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1、BRITISH STANDARD BS EN ISO 9073-9:1998 Textiles Test methods for nonwovens Part 9: Determination of drape coefficient The European Standard EN ISO 9073-9:1998 has the status of a British Standard ICS 59.080.30 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontroll
2、ed Copy, (c) BSI BS EN ISO 9073-9:1998 This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 November 1998 BSI 05-1999 ISBN 0 580 30634 8 National foreword
3、This British Standard is the English language version of EN ISO 9073-9:1998. It is identical with ISO 9073-9:1995. The UK participation in its preparation was entrusted to Technical Committee TCI/24, Physical testing of textiles, which has the responsibility to: aid enquirers to understand the text;
4、 present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee
5、can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement i
6、nternational or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to
7、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 immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, p
8、ages i and ii, the EN ISO title page, page 2, the ISO title page, page ii, pages 1 to 4 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since pub
9、lication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9073-9:1998 BSI 05-1999i Contents Page National forewordInside front cover Foreword2 Forewordii Text of ISO 9073-91 Licensed Copy: sheffieldun sheffieldu
10、n, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9073-9 July 1998 ICS 59.080.30 Descriptors: See ISO docum
11、ent English version Textiles Test methods for nonwovens Part 9: Determination of drape coefficient (ISO 9073-9:1995) Textiles Mthodes dessai pour nontisss Partie 9: Dtermination du coefficient de drap (ISO 9073-9:1995) Textilien Prfverfahren fr Vliesstoffe Teil 9: Bestimmung des Fallkoeffizienten (I
12、SO 9073-9:1995) This European Standard was approved by CEN on 1 July 1998. 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 bibliog
13、raphical references concerning such national standards may be obtained on application to the 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
14、 CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norw
15、ay, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved wor
16、ldwide for CEN national Members. Ref. No. EN ISO 9073-9:1998 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9073-9:1998 BSI 05-1999 2 Foreword The text of the International Standard from Technical Committee ISO/TC 38 “Textiles” of
17、the International Organization for Standardization (ISO) has been taken over as an European Standard 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 publicat
18、ion of an identical text or by endorsement, at the latest by January 1999, and conflicting national standards shall be withdrawn at the latest by January 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement th
19、is European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 9073-9:1998 has been
20、 approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword2 1Scope1 2Normative references1 3Definition1 4Principle1 5Apparatus2 6Sampling2 7Selection of test piece diameter2 8Prepara
21、tion and conditioning of test pieces2 9Preliminary procedures2 10Test procedure2 11Expression of results3 12Test report3 Annex ZA (normative) Normative references to international publications with their relevant European publications4 Figure 1 Section through the test apparatus1 Licensed Copy: shef
22、fieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9073-9:1998 ii BSI 05-1999 Foreword ISO (the International Organization for Standardization) is a
23、worldwide federation of national standards 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
24、 on that committee. International organizations, 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. Draft International Standards ado
25、pted 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 bodies casting a vote. International Standard ISO 9073-9 was prepared by Technical Committee ISO/TC 38, Textiles. ISO 9073 consis
26、ts 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 7: Determination of bendin
27、g length; Part 8: Determination of liquid strike-through time (simulated urine); Part 9: Determination of drape coefficient. Descriptors: Textiles, fabrics, non-woven fabrics, deformation, tests, drape determination (textiles), coefficients. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:
28、28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9073-9:1998 BSI 05-19991 1 Scope This part of ISO 9073 specifies a method for determining the drape coefficient of nonwovens. NOTE 1This International Standard describes a test method specific to nonwovens. Other International Standards applica
29、ble to textile, paper, plastics, rubber or other materials can also be applied to test certain nonwoven characteristics. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 9073. At the time of publication
30、, 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 standards indicated below. Members of IEC and ISO maintain registers of curre
31、ntly valid International Standards. ISO 139:1973, Textiles Standard atmospheres for conditioning and testing. ISO 186:1994, Paper and board Sampling to determine average quality. ISO 9073-1:1989, Textiles Test methods for nonwovens Part 1: Determination of mass per unit area. 3 Definition For the pu
32、rposes of this part of ISO 9073, the following definition applies. 3.1 drape ability of a circular sample of a fabric to deform when suspended under specified conditions 4 Principle A circular piece of the nonwoven under test is held horizontally between smaller concentric discs, and the exterior ri
33、ng of nonwoven is allowed to drape into folds around the lower supporting disc. The shadow of the draped test piece is cast from below onto a ring of paper of known mass and of the same size as the unsupported part of the test piece. The outline of the shadow is traced onto the ring of paper, the pa
34、per is then cut along the trace of the shadow and the mass of the inner part representing the shadow is determined. The drape coefficient is the mass of that part of the paper ring representing the shadow expressed as a percentage of the mass of the whole paper ring. Figure 1 Section through the tes
35、t apparatus Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9073-9:1998 2 BSI 05-1999 5 Apparatus 5.1 Test equipment, comprising a box-like apparatus with translucent lid, containing 5.1.1 two horizontal discs, of diameter 18 cm, betw
36、een which the test piece is held, the lower disc having a central locating pin; 5.1.2 point source of light, positioned centrally beneath the discs and at the focus of a concave parabolic mirror which reflects parallel light vertically past the discs onto the lid of the instrument; 5.1.3 centreplate
37、, on the apparatus lid, to locate the paper ring. A suitable apparatus is shown in Figure 1. 5.2 Three circular templates, of diameter 24 cm, 30 cm and 36 cm respectively, adapted to facilitate marking the centre of the test specimen. 5.3 Rings of translucent paper, of internal diameter 18 cm and ex
38、ternal diameter 24 cm, 30 cm and 36 cm respectively. 5.4 Balance, capable of determining mass to an accuracy of 0,01 g. 5.5 Stopwatch. 6 Sampling Carry out sampling of the test nonwoven in accordance with ISO 186. 7 Selection of test piece diameter Perform a preliminary test (see clause 10) using a
39、test piece of 30 cm diameter and calculate the drape coefficient (see clause 11) for this diameter (D30). If the drape coefficient is in the range 30 % to 85 %, use test pieces of 30 cm diameter for all the tests. If the drape coefficient is outside the range 30 % to 85 %, in addition to testing 30
40、cm diameter test pieces, carry out tests in accordance with a) or b) as appropriate: a) for limp nonwovens characterized by a drape coefficient, D30, of less than 30 %, use test pieces of 24 cm diameter; b) for stiff nonwovens characterized by a drape coefficient, D30, of greater than 85 %, use test
41、 pieces of 36 cm diameter. NOTE 2Results obtained on test pieces of different diameters are not directly comparable, thus in all cases tests also need to be carried out on 30 cm diameter test pieces, regardless of drape coefficient. 8 Preparation and conditioning of test pieces 8.1 Condition the non
42、woven to be tested for at least 24 h in one of the standard atmospheres specified in ISO 139. 8.2 Place the test nonwoven, free from creases, on a flat horizontal surface and using a template (5.2) trace two test pieces, mark the centre of each and cut them out. 8.3 On each test piece, mark the two
43、faces as A and B. 9 Preliminary procedures 9.1 Checking the apparatus 9.1.1 Ensure that the centreplate on the apparatus lid (5.1.3) is horizontal, making adjustments using levelling feet in the base of the apparatus or other suitable means. 9.1.2 Switch on the light. Ensure that the filament of the
44、 light source (5.1.2) is at the focus of the parabolic mirror by placing the 30 cm diameter template (5.2) centrally on the lower support disc (5.1.1) of the apparatus. A centrally situated shadow of diameter 30 cm should be cast on a 36 cm diameter paper ring (5.3) placed in position on the lowered
45、 lid of the apparatus. 9.2 Preliminary evaluation Place one nonwoven test piece, with face A downwards, on the lower horizontal disc of the testing equipment. If the sample drapes to form folds at regular intervals around its circumference, the measurement can be carried out. If the test piece has a
46、 predisposition to bend in line with two planes located on either side of the support disc, do not carry out the measurement but record this fact in the test report. 10 Test procedure 10.1 Place a ring of paper (5.3) of the same outside diameter as the test piece on the apparatus lid. 10.2 Place the
47、 test piece of nonwoven on the lower horizontal disc (5.1.1) of the apparatus so that the locating pin passes through the centre of the test piece. Then position the top disc on the test piece with the pin fitting into the hole in the top disc. 10.3 Lower the lid of the apparatus and start the stopw
48、atch (5.5). 10.4 After 30 s switch on the light source (5.1.2) and without delay draw around the periphery of the shadow cast on the paper ring (5.3). Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:28:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9073-9:1998 BSI 05-19993 10.5 Remov
49、e the paper ring, fold it so that it will fit on the balance (5.4) and determine the mass, mpr, of the paper ring to the nearest 0,01 g. 10.6 Cut the paper ring around the periphery of the shadow which was drawn on the paper, discard the area of the paper ring which was not shaded, and determine the mass, msa, of the residual portion of the paper ring to the nearest 0,01 g. 10.7 Repeat the procedures of 10.1 to 10.6, on the same nonwoven test piece but with the other surface uppermost, using a fresh paper ring. 10.8