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1、BS EN 12722:2009 ICS 97.140 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Furniture Assessment of surface resistance to dry heat Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI This British Standard was published un
2、der the authority of the Standards Policy and Strategy Committee on 31 March 2009 BSI 2009 ISBN 978 0 580 57245 6 Amendments/corrigenda issued since publication DateComments BS EN 12722:2009 National foreword This British Standard is the UK implementation of EN 12722:2009. It supersedes BS EN 12722:
3、1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee FW/0/1, Common test methods. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisi
4、ons of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EUROPEAN STANDARD NORME EUROPENNE EUROPI
5、SCHE NORM EN 12722 February 2009 ICS 97.140Supersedes EN 12722:1997 English Version Furniture - Assessment of surface resistance to dry heat Meubles - valuation de la rsistance de la surface la chaleur sche Mbel - Bewertung der Bestndigkeit von Oberflchen gegen trockene Wrme This European Standard w
6、as approved by CEN on 3 January 2009. 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 bibliographical references concerning such n
7、ational standards 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 translation under the responsibility of a CEN member into its own language a
8、nd notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembo
9、urg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CENAll rights
10、of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12722:2009: E Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative reference
11、s 4 3 Terms and definitions .4 4 Principle 5 5 Apparatus and materials .5 5.1 Thermometer 5 5.2 Heat source 5 5.3 Oven 6 5.4 Cleaning cloth 6 5.5 Heat-insulating foam .6 5.6 Diffuse light source .6 6 Preparation and conditioning .7 6.1 Conditioning .7 6.2 Test surface 7 7 Test procedure .7 7.1 Testi
12、ng 7 7.2 Test temperatures 7 8 Examination of the test panel .8 9 Assessment of results 8 10 Test report 9 Annex A (informative) Direct light source 10 A.1 General . 10 A.2 Apparatus 10 Annex B (informative) Significant technical changes in revised edition of this standard . 12 Bibliography . 13 Tab
13、les Table 1 Descriptive numerical rating code 8 Figures Figure 1 Aluminium block used as heat source .6 Figure A.1 Viewing cabinet 11 Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 3 Foreword This document (EN 12722:2009)
14、 has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. 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 August 2009, and conflicting national sta
15、ndards shall be withdrawn at the latest by August 2009. 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 12
16、722:1997. Informative Annex B provides details of significant technical changes between this European Standard and the previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: A
17、ustria, Belgium, Bulgaria, Cyprus, 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. Licens
18、ed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 4 1 Scope This European Standard specifies a method for the assessment of the resistance to dry heat of all rigid furniture surfaces regardless of materials. It does not apply to l
19、eather and textile surfaces. The test is intended to be carried out on a part of the finished furniture, but can be carried out on test panels of the same material, finished in an identical manner to the finished product, and of a size sufficient to meet the requirements of the test. The test should
20、 be carried out on unused surfaces. Annex A (informative) describes a direct light source. 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 editio
21、n of the referenced document (including any amendments) applies. EN ISO 4287:1998, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture parameters (ISO 4287:1997) EN ISO 4288:1997, Geometrical Product Specifications (GPS) Surface texture: Pr
22、ofile method Rules and procedures for the assessment of surface texture (ISO 4288:1996) ISO 209:2007, Aluminium and aluminium alloys Chemical composition ISO 1770:1981, Solid-stem general purpose thermometers 3 Terms and definitions For the purposes of this document, the following terms and definiti
23、ons apply. 3.1 test panel panel including the test surface NOTE It may be cut from a finished item of furniture or it may be a separate panel produced in the same manner as the finished item of furniture. 3.2 test surface part of the test panel 3.3 test area part of the test surface under the heat s
24、ource (5.2) Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 5 3.4 roughness Ra arithmetic mean of the absolute values of the profile deviations from the mean line 4 Principle A standard aluminium alloy block at a specified
25、 test temperature is placed on the test surface. After a specified period of time the block is removed. The test surface is wiped dry and the test panel left undisturbed for at least 16 h. It is then examined under specified lighting conditions for signs of damage (discolouration, change in gloss an
26、d colour, blistering, swelling or other defects). Assessment of the test results in terms of a descriptive numerical rating code. 5 Apparatus and materials 5.1 Thermometer As specified in ISO 1770:1981, capable of insertion to the bottom of the centre bore of the heat source (5.2) or other means of
27、measuring the temperature of the heat source to an accuracy of 1 C. 5.2 Heat source A block as shown in Figure 1 manufactured from aluminium alloy according to ISO 209:2007, Al Mg Si (alloy shall contain more than 94% aluminium). The roughness of bottom surface shall be (2 1) m, expressed as Ra, acc
28、ording to EN ISO 4287:1998 and EN ISO 4288:1997. NOTE Alloy 6060 and 64430 are suitable For this document, the following tolerances are applicable: Dimensions: 0,2 mm of the nominal dimension; Angles: 2 of the nominal angle. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolle
29、d Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 6 Dimensions in millimetres Figure 1 Aluminium block used as heat source 5.3 Oven An oven which can heat the heat source to a temperature higher than the test temperature. 5.4 Cleaning cloth White soft absorbent cloth. 5.5 Heat-insulating foam A mel
30、amine foam, with the following characteristics: density between 8,5 kg/m3 and 11,5 kg/m3; heat conductivity, less than 0,035 W/mK. The foam shall withstand at a temperature higher than 200 C. 5.6 Diffuse light source Light source providing evenly diffused light, giving an illumination on the test su
31、rface of (1200 400) lx. This may either be diffused daylight or be diffused artificial daylight. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 7 NOTE The daylight should be unaffected by surrounding trees, etc. When arti
32、ficial daylight is used it is recommended that it should have a correlated colour temperature of (6500 50) K and an Ra greater than 92, by using a colour matching booth in accordance with EN ISO 3668:2001. 1 6 Preparation and conditioning 6.1 Conditioning Conditioning of test surface shall begin at
33、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. 6.2 Test surface The test surface shall be substantially flat and of a size sufficient to meet the requirements of C
34、lause 7. 7 Test procedure 7.1 Testing Immediately after conditioning, the test shall be carried out in a test atmosphere of (23 2) C. The test surface shall be placed horizontally. It shall accommodate the required number of tests, with at least 15 mm spacing between the perimeter of adjacent test s
35、urfaces, and between the perimeters of the test surfaces and the edges of the panel. Where tests are carried out simultaneously, the perimeters of the test surfaces shall be separated by a minimum of 50 mm. If there is any reason to suppose that the properties of the test surface may vary, two ident
36、ical tests shall be carried out simultaneously. The test surface shall be lightly wiped with a cleaning cloth (5.4) before the test. Using the oven (5.3), raise the temperature of the heat source to a temperature higher than the specified test temperature, and transfer it to the heat insulating foam
37、 (5.5). Place the thermometer (5.1) or other means of measuring temperature in the centre bore of the heat source (5.2). If the temperature is not higher than the specified test temperature, the heat source shall be placed again in the oven until achieving this higher temperature. When the heat sour
38、ce reaches the specified test temperature with an accuracy of 1 C, immediately place it on the test surface. After 20 min in this position, remove the block. Wipe the test surface dry with the cleaning cloth when it has cooled. Record the position of each test surface and its temperature. Allow the
39、test surface to stand undisturbed from 16 h to 24 h. Wipe each test surface with the cleaning cloth (5.4) and examine the test panel. 7.2 Test temperatures The test temperatures shall be stated in requirement specifications, selected from the following: Licensed CopyChinese University of Hong Kong,
40、11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 8 55 C 70 C 85 C 100 C 120 C 140 C 160 C 180 C 200 C 8 Examination of the test panel Carefully examine the test surface, with light coming from all directions, for damage, e.g. discoloration, change in gloss and colour,
41、blistering, swelling and other defects. For this purpose illuminate the surface separately using the light source (5.6) and examine from different angles, including angle combinations such that the light is reflected from the test surface and towards the observers eye. Viewing distance shall be 0,25
42、 m to 1,0 m. Changes caused by the test shall also be determined by touching the surface. 9 Assessment of results Rate the test surfaces by comparing the test area with the area surrounding it according to Table 1: Table 1 Descriptive numerical rating code Numerical rating Description 5 No change te
43、st area indistinguishable from adjacent surrounding area 4 Minor change test area distinguishable from adjacent surrounding area, only when the light source is mirrored on the test surface and is reflected towards the observers eye, e. g. discoloration, change in gloss and colour no change in the su
44、rface structure, e.g. deformation, swelling, fibre raising, cracking, blistering 3 Moderate change test area distinguishable from adjacent surrounding area, visible in several viewing directions, e. g. discoloration, change in gloss and colour no change in the surface structure, e.g., swelling, fibr
45、e raising, cracking, blistering 2 Significant change test area clearly distinguishable from adjacent surrounding area, visible in all viewing directions, e. g. discoloration, change in gloss and colour, and / or structure of the surface slightly changed, e.g. swelling, fibre raising, cracking, blist
46、ering 1 Strong change the structure of the surface being distinctly changed and / or discoloration, change in gloss and colour, and / or the surface material being totally or partially removed Each test surface shall be rated by an experienced observer. In cases of doubt, three observers shall be re
47、quired. All observers shall have good colour vision. In case of three observers, the reported rating for the test surface shall be the average to the nearest nominal value. Duplicate tests shall be assessed and reported separately. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Unco
48、ntrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 9 10 Test report The test report shall include at least the following information: a) reference to this European Standard; b) description of the test panel (relevant data); c) the test temperature or temperatures; d) conditioning time; e) the
49、 assessment of each test surface in accordance with Clause 9; f) if applicable, test results using the direct light source (Annex A (informative); g) if applicable, additional information regarding type of damage; h) any deviations from this European standard; i) name and address of the test facility; j) date of the test. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:14, Uncontrolled Copy, (c) BSI BS EN 12722:2009 EN 12722:2009 (E) 10 Annex A (informative) Direct light source
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