1、BSI Standards PublicationPD CEN/TS 16611:2016Furniture Assessment ofthe surface resistance tomicroscratchingPD CEN/TS 16611:2016 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of CEN/TS16611:2016. It supersedes PD CEN/TS 16611:2014 which is withdrawn.The UK parti
2、cipation in its preparation was entrusted to TechnicalCommittee FW/0/1, Common Test Methods for Furniture.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are
3、 responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 91179 8ICS 97.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStand
4、ards Policy and Strategy Committee on 31 March 2016.Amendments issued since publicationDate Text affectedPD CEN/TS 16611:2016TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 16611 March 2016 ICS 97.140 Supersedes CEN/TS 16611:2014English Version Furniture - Assessment o
5、f the surface resistance to microscratching Ameublement - valuation de la rsistance des surfaces aux micro-rayures Mbel - Bestimmung der Mikrokratzbestndigkeit von Mbeloberflchen This Technical Specification (CEN/TS) was approved by CEN on 18 January 2016 for provisional application. The period of v
6、alidity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in t
7、he same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN m
8、embers 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, Por
9、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any
10、form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 16611:2016 EPD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Principle . 5 5 Apparatus and materials 5 5.1 Martindale tes
11、ter . 5 5.2 Holder for scrub material 5 5.3 Diffuse light source . 5 5.4 Reflectometer . 5 5.5 Positioning device . 6 5.6 Scrub materials 6 5.7 Double-sided tape . 6 5.8 Cleaning cloth . 7 5.9 Reference black high gloss HPL . 7 6 Assembly and maintenance of the Martindale tester 7 7 Preparation and
12、conditioning 7 7.1 Conditioning 7 7.2 Test surface . 7 8 Test procedure . 7 8.1 General 7 8.2 Testing . 8 8.2.1 Procedure A . 8 8.2.2 Procedure B . 8 9 Test report . 9 Annex A (normative) Method for checking the Lissajous figure 10 Annex B (normative) Classification of the image after scratching acc
13、ording to procedure B . 11 Bibliography . 13 PD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 3 European foreword This document (CEN/TS 16611:2016) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. Attention is drawn to the possibility that some of th
14、e 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 CEN/TS 16611:2014. Compared to CEN/TS 16611:2014, the following modification has been made: in 8.2.2.1 “2 or 3” is
15、 replaced by “3 or 4”. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Repub
16、lic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 4 1 Scope This T
17、echnical Specification specifies a method for the assessment of the surface resistance to microscratching and relates to rigid surfaces of all finished products regardless of materials. Method A is suitable for all types of surface coatings and coverings except for lacquers with pearly or metallic e
18、ffects. Method B is suitable for all types of surface. It does not apply to finishes on leather and fabrics. The test is intended to be carried out on a part of finished furniture, but can be carried out on test panels of the same material, finished in an identical manner to the finished product, an
19、d of a size sufficient to meet the requirements of the test. It is essential that the test is carried out on unused surfaces. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated referenc
20、es, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 2813, Paints and varnishes - Determination of gloss value at 20, 60 and 85 (ISO 2813) EN ISO 12945-2, Textiles - Determination of fabric propensity to
21、surface fuzzing and to pilling - Part 2: Modified Martindale method (ISO 12945-2) EN ISO 12947-1, Textiles - Determination of the abrasion resistance of fabrics by the Martindale method - Part 1: Martindale abrasion testing apparatus (ISO 12947-1) 3 Terms and definitions For the purposes of this doc
22、ument, the following terms and definitions apply. 3.1 test surface part of the test panel 3.2 test panel panel including the test surface Note 1 to entry: It can be cut from a finished item of furniture or it can be a separate panel produced in the same manner as the finished item of furniture. 3.3
23、test area part of the test surface effected by the scrub material (5.6) 3.4 rub one revolution of the two outer drives of the Martindale tester PD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 5 3.5 cycle completion of all the translational movements tracing a Lissajous figure comprising 16 rubs Note 1 to
24、entry: This comprises of 16 revolutions of the two outer drives and 15 revolutions of the inner drive of the Martindale tester. 3.6 lissajous figure figure created by movement which ranges changes from a circle gradually narrowing ellipses, until it becomes a straight line, from which progressively
25、widening ellipses develop, in a diagonally opposite direction before the pattern is repeated 4 Principle The test surface shall be fixed on a horizontal table. A circular scrub material fixed on a holder impacts on the test surface with a defined load. Table and holder shall be moved perpendicular t
26、o each other, in a translational movement, with defined frequencies, tracing a Lissajous figure. The holder is additionally freely rotatable around its own axis perpendicular to the horizontal plane. The test surface is exposed to the scrub material for a predetermined number of rubs. The changes of
27、 the surface are determined by gloss measurement or visual assessment. 5 Apparatus and materials 5.1 Martindale tester The Martindale tester shall be as described in EN ISO 12947-1 with the following exceptions: the “Abrading table” is the table for the test surface; the “clamping ring and mechanism
28、” is not necessary; the “specimen holder” is the holder for the scrub material; the “loading pieces” are not necessary. 5.2 Holder for scrub material The holder for scrub material shall be as described in EN ISO 12945-2, with the following exceptions: consists of a guide plate with an inner diameter
29、 of (90 0,5) mm, a large ring weight and a spindle with an overall weight (612 2) g (nominally called 6 N). 5.3 Diffuse light source Light source providing evenly diffused light giving an illumination on the test surface of (1200 400) lx. This may either be diffuse daylight or be diffuse artificial
30、daylight. The daylight should be unaffected by surrounding trees, buildings, etc. When artificial light is used it is recommended that it can have a correlated colour temperature of (6500 50) K and an Ragreater than 92, by using a colour matching booth in accordance with EN ISO 3668:20011. 5.4 Refle
31、ctometer For gloss measurement with 3 angle measurement geometry as described in EN ISO 2813. PD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 6 5.5 Positioning device For gloss measurement on the same position before and after the test with 4 measurement points. An example of a positioning device is shown
32、 in Figure 1. Dimensions in millimetres Reflectometer direction of movement for the measurement Key 1 measurement area Figure 1 Scheme of positioning device for the reflectometer on the shaded measurement area 5.6 Scrub materials The scrub material shall be a nylon web imbedded with alumina abrasive
33、. Two types of scrub materials (very fine and ultra fine) shall be used. The scrub materials shall be cut or stamped on a diameter of (89 1) mm. NOTE Scotch Brite fleece 7447+(very fine) and 7448+(ultra fine) are examples of a suitable product available commercially. This information is given for th
34、e convenience of users of this Technical Specification and does not constitute an endorsement by CEN of this product. 5.7 Double-sided tape To attach the scrub material on the guide plate of the holder and the test surface on the table. PD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 7 5.8 Cleaning cloth
35、White soft absorbent cloth. 5.9 Reference black high gloss HPL Black high gloss lacquered HPL (Reflectometer value R 100, measured with 20 geometry of a reflectometer according to 5.4 with antiscratch surface provided by corundum in the top lacquer. NOTE James Heal Article Nr. JH701501 is an example
36、 of a suitable product available commercially. This information is given for the convenience of users of this Technical Specification and does not constitute an endorsement by CEN of this product. 6 Assembly and maintenance of the Martindale tester The assembly of the tester shall be carried out in
37、accordance with the instructions of the apparatus manufacturer. For the described test, the outer position C shall be used for both axes to create the larger Lissajous figure as explained in EN ISO 12947-1 or the manufacture guidebook. The checking of the Lissajous figure shall be done according to
38、Annex A. 7 Preparation and conditioning 7.1 Conditioning Conditioning of test surface shall begin at least one week before testing and shall be carried out in air at a temperature of (23 2) C and relative humidity of (50 5) %. The conditioning time shall be stated in the test report. NOTE Some finis
39、hing systems cannot have achieved full cure after one week conditioning. 7.2 Test surface Six test surfaces with dimensions of 150 mm x 150 mm shall be prepared. The test surface shall be carefully wiped with a cleaning cloth (5.8) before the test without scratching the surface. The test surface sha
40、ll be substantially flat. 8 Test procedure 8.1 General Two different procedures (A / B) are described. All the necessary parameters (scrub material, speed factor, number of cycles) are shown in Table 1. Table 1 Test procedures for determination of resistance to micro scratches Test parameter Procedu
41、re A Procedure B Scrub material ultra fine very fine Speed factor 1 1 Number of rubs 80 rubs (= 5 Lissajous movements) 80 rubs (= 5 Lissajous movements) Assessment gloss change after 24 h Visual assessment according to Annex B after 24 h PD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 8 8.2 Testing 8.2.1
42、Procedure A 8.2.1.1 Calibration of ultra fine scrub material Procedure A is also valid for checking of every new batch of ultra fine scrub materials (5.6). In this case, 3 test surfaces shall be taken from reference high gloss HPL (5.9). The batch of ultra fine scrub materials shall be used for test
43、ing if the mean value of gloss change, determined with 20 reflectometer geometry, is in the range from 15 % to 30 % according to EN ISO 2813. 8.2.1.2 Microscratching of test area Immediately after conditioning, the test shall be carried out in a test temperature of (23 2) C at 3 test surfaces. Befor
44、e the test, 4 gloss measurements on each test surface using the reflectometer (5.4) with a geometry of 60 and the positioning device (5.5) shall be carried out. If there is a decor or preferential structure direction on the test surface the measurement shall be done parallel to this direction. Calcu
45、late the mean value for each test surface. If the mean value is higher than 70 (high gloss surface) additional four measurements with the 20 geometry shall be carried out. Fix the test surface on the table of the Martindale tester using the adhesive tape (5.7). The ultra fine scrub material shall be
46、 fixed with the adhesive tape on the guide plate of holder. Select 80 rubs on the counter of the Martindale device and start the test. After finishing remove the test surface from the table and clean it with the cleaning cloth (5.8). Remove also the used scrub material. Measure the gloss again with
47、the chosen geometry according to the above described procedure. Calculate for each test surface the gloss change R according to the following formula: = 100RI RFRRI% (1) where RI is the mean value at initial state; RF is the value after finishing the test. Calculate the mean value of the gloss chang
48、e of the 3 test surfaces and round it on the next integral number. 8.2.2 Procedure B 8.2.2.1 Calibration of very fine scrub material Procedure B is also valid for checking of every new batch of very fine scrub materials (5.6). In this case, 3 test surfaces shall be taken from reference high gloss HP
49、L (5.9). The batch of very fine scrub materials shall be used for testing if the mean value of scratch pictures is 3 or 4 (Annex B). 8.2.2.2 Microscratching of test area Immediately after conditioning, the test shall be carried out in a test temperature of (23 2) C at 3 test surfaces. PD CEN/TS 16611:2016CEN/TS 16611:2016 (E) 9 Fix the test surface on the table of the Martindale tester using the adhesive tape (5.7). The very fine scrub material shall be fixed on the guide plate of holder with the adhesive tape. S
