1、BSI Standards PublicationBS EN ISO 12951:2015Textile floor coverings Determination of mass loss,fibre bind and stair nosingappearance change using theLisson Tretrad machineBS EN ISO 12951:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO12951:2015. It sup
2、ersedes BS EN 1963:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/3, Textile floor coverings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the
3、necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 83826 2ICS 59.080.60Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard
4、was published under the authority of theStandards Policy and Strategy Committee on 31 October 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12951 September 2015 ICS 59.080.60 Supersedes EN 1963:2007English Version Textile floor cov
5、erings - Determination of mass loss, fibre bind and stair nosing appearance change using the Lisson Tretrad machine (ISO 12951:2015) Revtements de sol textiles - Dtermination de la perte de masse, de la sensibilit au dfibrage et du changement daspect au nez de marche laide la machine Lisson Tretrad
6、(ISO 12951:2015) Textile Bodenbelge - Bestimmung des Gewichtsverlustes, der Fasereinbindung und der Treppenkantenprfung mittels Tretradgert System Lisson (ISO 12951:2015) This European Standard was approved by CEN on 6 August 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regula
7、tions 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 the CEN-CENELEC Management Centre or to any CEN member
8、. 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN
9、 members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, P
10、ortugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any
11、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12951:2015 EBS EN ISO 12951:2015EN ISO 12951:2015 (E) 3 European foreword This document (EN ISO 12951:2015) has been prepared by ISO/TC 219 “Floor coverings“ in collaboration with Technical Committee CEN/TC 134 “Resi
12、lient, textile and laminate floor coverings” the secretariat of which is held by NBN. This 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 March 2016, and conflicting national standards shall be withdr
13、awn at the latest by March 2016. 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 shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1963:2007. According to t
14、he CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
15、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 12951:2015 has been approved by CEN as EN ISO 12951:2015 without a
16、ny modification. BS EN ISO 12951:2015ISO 12951:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Apparatus . 26 Sampling and selection of test specimens . 57 Atmosphere for conditioning and testing 68 Calibration of the apparatus 69 Procedure. 79.1 Genera
17、l . 79.2 Test A: Determination of mass loss of textile floor coverings, also used to assess fibre bind of synthetic pile carpets 79.3 Test B: Determination of stair nosing: appearance change of textile floor coverings . 89.4 Test C: Determination of fibre bind on synthetic loop pile carpets . 89.5 T
18、est D: Determination of fibre bind (hairiness) on needled floorcoverings and floor coverings without pile. 810 Calculation and expression of results . 910.1 Test A . 910.2 Test B . 910.3 Test C 1010.4 Test D 1010.5 Unusual phenomena . 1011 Test Report .10 ISO 2015 All rights reserved iiiContents Pag
19、eBS EN ISO 12951:2015ISO 12951:2015(E)ForewordISO (the International Organization for Standardization) is a 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
20、interested in a subject for which a technical committee has been established has the right to be represented 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 Electrotech
21、nical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO d
22、ocuments should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).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 respon
23、sible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given f
24、or the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following UR
25、L: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 219, Floor coverings.This second edition cancels and replaces the first edition (ISO 12951:1999), which has been technically revised.iv ISO 2015 All rights reservedBS EN ISO 12951:2015INTERNATIONAL STANDARD
26、ISO 12951:2015(E)Textile floor coverings Determination of mass loss, fibre bind and stair nosing appearance change using the Lisson Tretrad machine1 ScopeThis International Standard specifies four methods of test of textile floor coverings (with or without an underlay, see Clause 9) using the Lisson
27、 Tretrad machine. test A: determination of mass loss of textile floor coverings, also used to assess fibre bind of synthetic pile carpets; test B: determination of stair nosing appearance change of textile floor coverings; test C: determination of fibre bind on synthetic loop pile carpets; test D: d
28、etermination of fibre bind (hairiness) on needled floor coverings and floor coverings without pile.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited a
29、pplies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 139, Textiles Standard atmospheres for conditioning and testingISO 1765, Machine-made textile floor coverings Determination of thicknessISO 1957, Machine-made textile floor coverings
30、Selection and cutting of specimens for physical testsISO 2424, Textile floor coverings VocabularyISO 8543, Textile floor coverings Methods for determination of massISO 9405, Textile floor coverings Assessment of changes in appearanceEN 1307, Textile floor coverings Classification of pile carpets3 Te
31、rms and definitionsFor the purposes of this International Standard, the following terms and definitions, in addition to those in ISO 2424, apply:3.1mass loss per unit areamvdifference between the sample mass before and after the wear test, related to the tested areaNote 1 to entry: See Clause 10. IS
32、O 2015 All rights reserved 1BS EN ISO 12951:2015ISO 12951:2015(E)3.2relative mass loss for pile carpetsmrvratio of the mass loss per unit area mvas a percentage of the mass of pile per unit area above the substrate (in accordance with ISO 8543)3.3ITRindexindex calculated according to the following f
33、ormula:ImmTR APrv=019100100,wheremAPis the mass per unit area above the substrate in grams per square metre, determined in accordance with ISO 8543;mrvis the relative fibre loss expressed as a percentage.4 PrincipleThe specimens of a textile floor covering are exposed, at constant load and slippage
34、and for a prescribed number of double passages, to the action of a four-footed wheel (Tretrad), the feet of which are fitted with interchangeable rubber soles.5 Apparatus5.1 Lisson Tretrad machine5.1.1 GeneralA Lisson Tretrad machine comprises of a bed plate, a vacuum cleaning system, and two Tretra
35、d assemblies (see Figure 1).2 ISO 2015 All rights reservedBS EN ISO 12951:2015ISO 12951:2015(E)Key1 support 2 movement of the Tretrad 3 cog bar 4 Tretrad wheel5 frame 6 drive 7 foot 8 bed plate9 specimen 10 dust extraction 11 tension weightFigure 1 Lisson Tretrad machine5.1.2 Bed plateThe bed plate
36、faces are parallel to the track travelled by the Tretrad feet and the front edge of the plate is rounded with a 10 mm radius to simulate a stair nosing.The test surface is formed by the width of the Tretrad feet and the length of the track over which the Tretrad runs. The track length shall be deter
37、mined for each machine by measuring the distance between the front edge of the base plate and the perpendicular projection of the Tretrad axis at its furthermost point of reversal. The length of track shall be (800 20) mm.Two clamps mounted at each end of the bed plate are used to hold each specimen
38、 under tension. The tension is applied by means of a weighted third clamp, each specimen being subjected to a force of (20 2) kg.5.1.3 Tretrad assembliesThe Lisson Tretrad apparatus has two Tretrad assemblies, each of which comprises a Tretrad mounted in a frame that is free to rotate around an axis
39、 that is 135 mm to 140 mm above the upper surface of the bed plate.Each Tretrad comprises four equally-spaced legs with rigidly attached feet platforms.The surface of the foot platform has a radius of curvature of (112,5 1) mm, a circumferential length of (100,0 1,0) mm, and a width of (55,0 0,5) mm
40、. The ends of the contact surfaces of the platforms are rounded with a radius of (4,0 0,5) mm.The vertical force applied by the Tretrad feet, in the stationary state, shall be (15,0 2,0) kg measured without the soles in position (see Figure 2). ISO 2015 All rights reserved 3BS EN ISO 12951:2015ISO 1
41、2951:2015(E)The linear speed of the Tretrad is (0,28 0,02) m/s and the peripheral speed of the Tretrad with sole coverings is (20,0 2,0) % greater than the linear speed. This causes slippage of the feet on the test specimen in addition to the compressive action.At the front edge of the bed plate, th
42、e Tretrad runs beyond the bed and is held horizontally by a height adjustable stopper, in such a way that the lower edge of the foot (without sole material) can be adjusted between 5 mm below and 5 mm above the level of the surface of the bed plate (see Figure 2).At the points of reversal, the Tretr
43、ad remains stationary for approximately 1 s; during this stoppage at the forward point of reversal, the Tretrad is rotated through an angle (but not a right angle) to ensure that the feet walk evenly over the length of the test area.5.1.4 Vacuum cleaning systemSuction nozzles follow the horizontal m
44、ovement of the Tretrad assemblies. The nozzles are flexibly mounted and are equipped on their undersides with slides that rest on the edges of the test specimens, thereby not imposing any wear on the specimens.Each nozzle has the dimensions shown in Figure 2 and is connected to the vacuum cleaner to
45、 extract the abraded fibre.a) bottom view b) side viewKey1 connection to vacuum2 nozzle casing3 nozzle mouthFigure 2 Vacuum inletThe vacuum cleaner performance shall be such as to produce airflow of at least 30 l/s measured at the connection point of the nozzles by an appropriate anemometer in order
46、 to remove loose fibre from the surface of the specimens.4 ISO 2015 All rights reservedBS EN ISO 12951:2015ISO 12951:2015(E)5.2 Other equipment5.2.1 SolesThe soles1)shall be made from vulcanized styrene butadiene rubber (SBR) with silicic acid-based white filler additives and meet the requirements s
47、pecified in Table 1. The soles shall have a wave profile on one face. The slip resistance of the sole material is controlled to ensure standard behaviour in the Lisson Tretrad test.The sole material shall be stored in the dark and air exchange shall be avoided. After long times of storage of the sol
48、es (e.g. two years), they shall be validated by the calibration procedure (calibration carpet).Table 1 Properties of rubber soles for Lisson Tretrad machineSize minimum (190 2) mm long by (55 0,5) mm wideThickness (2,5 0,3) mmHardness (90 5) Shore AWavelength (13,0 0,5) mmAmplitude (2,0 0,5) mmProfi
49、le height (0,6 0,1) mm5.2.2 Balance, capable of weighing the test specimens to the nearest 0,01 g.5.2.3 External vacuum cleaner, equipped with a rotating brush, with or without beaters.5.2.4 Standard photographs, for assessment of fibre bind of loop pile carpets.2)5.2.5 Standard photographs, for assessment of fibre bind on needled floor coverings.3)6 Sampling and selection of test specimensSelect the specimens in accordance with ISO 1957.Test A: at least four specimens, each 1 500 mm
