1、July 2017 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 79.060.20!%gg-“2686810www.din.deDIN
2、 EN 14323Woodbased panels Melamine faced boards for interior uses Test methods;English version EN 14323:2017,English translation of DIN EN 14323:2017-07Holzwerkstoffe Melaminbeschichtete Platten zur Verwendung im Innenbereich Prfverfahren;Englische Fassung EN 14323:2017,Englische bersetzung von DIN
3、EN 14323:2017-07Panneaux base de bois Panneaux surfacs mlamins pour usages intrieurs Mthodes dessais;Version anglaise EN 14323:2017,Traduction anglaise de DIN EN 14323:2017-07SupersedesDIN EN 14323:200406www.beuth.deDocument comprises 19 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the
4、German-language original shall be considered authoritative.06.17 DIN EN 14323:2017-07 2 A comma is used as the decimal marker. National foreword This document (EN 14323:2017) has been prepared by Technical Committee CEN/TC 112 “Wood-based panels” (Secretariat: DIN, Germany). The responsible German b
5、ody involved in its preparation was DIN-Normenausschuss Holzwirtschaft und Mbel (DIN Standards Committee Timber and Furniture), Working Committee NA 042-02-15 AA “Wood-based panels - Mirror committee to CEN/TC 112 and ISO/TC 89”. Amendments This standard differs from DIN EN 14323:2004-06 as follows:
6、 a) reference has been made to the new EN 438-2:2016; b) in 5.4.2 and 5.6.3, the light source has been changed; c) in 5.5.1, the principle of resistance to scratching has been changed; d) in 5.9, the determination of the wear point for resistance to abrasion has been deleted; e) in 5.10, the resista
7、nce to cigarette burns has been deleted. Previous editions DIN 53799-10: 1982-08 DIN 53799: 1960-10, 1968-07, 1975-05, 1986-01 DIN EN 14323: 2004-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14323 March 2017 ICS 79.060.20 Supersedes EN 14323:2004English Version Wood-based panels - Melamin
8、e faced boards for interior uses - Test methods Panneaux base de bois - Panneaux surfacs mlamins pour usages intrieurs - Mthodes dessaisHolzwerkstoffe - Melaminbeschichtete Platten zur Verwendung im Innenbereich - Prfverfahren This European Standard was approved by CEN on 9 January 2017. CEN members
9、 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 national standards may be obtained on application
10、to the CEN-CENELEC 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 and notified to the CEN-CENELEC Management
11、 Centre has the same status as the official versions. CEN 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, Lit
12、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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 Mar
13、nix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14323:2017 EEN 14323:2017 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Test pieces . 5 4 Conditioning of test pieces . 5 5 T
14、est methods 5 5.1 Dimensions (thickness, length and width) 5 5.2 Flatness . 5 5.2.1 Principle . 5 5.2.2 Apparatus . 5 5.2.3 Test pieces . 6 5.2.4 Procedure. 6 5.2.5 Expression of results 6 5.3 Edge damage . 6 5.3.1 Principle . 6 5.3.2 Apparatus . 6 5.3.3 Test pieces . 6 5.3.4 Procedure. 6 5.3.5 Expr
15、ession of results 6 5.4 Surface defects . 6 5.4.1 Principle . 6 5.4.2 Apparatus . 6 5.4.3 Test pieces . 7 5.4.4 Procedure. 7 5.4.5 Expression of results 7 5.5 Resistance to scratching . 8 5.5.1 Principle . 8 5.5.2 Apparatus . 8 5.5.3 Test pieces . 8 5.5.4 Procedure. 8 5.5.5 Expression of results 8 5
16、.6 Resistance to staining 8 5.6.1 Principle . 8 5.6.2 Staining agents . 8 5.6.3 Apparatus . 9 5.6.4 Test pieces . 9 5.6.5 Procedure. 9 5.6.6 Expression of results 9 5.7 Resistance to cracking 10 5.7.1 Principle 10 5.7.2 Apparatus 10 5.7.3 Test pieces 10 5.7.4 Procedure 10 5.7.5 Expression of results
17、 . 10 DIN EN 14323:2017-07 EN 14323:2017 3 5.8 Colour matching and surface texture 10 5.8.1 Principle . 10 5.8.2 Reference sample . 11 5.8.3 Test piece . 11 5.8.4 Apparatus 11 5.8.5 Procedure 11 5.9 Resistance to abrasion of the decorative surface layer 12 5.9.1 Principle . 12 5.9.2 Test pieces . 12
18、 5.9.3 Preconditioning of the test pieces and abrasive paper. 12 5.9.4 Apparatus 12 5.9.5 Materials 12 5.9.6 Procedure 12 5.9.7 Expression of results . 12 5.10 Resistance to water vapour . 12 5.10.1 Principle . 12 5.10.2 Apparatus 13 5.10.3 Test pieces . 13 5.10.4 Procedure 13 5.10.5 Expression of r
19、esults . 13 5.11 Resistance to colour change in xenon arc light 13 5.11.1 Principle . 13 5.11.2 Apparatus 13 5.11.3 Test pieces . 13 5.11.4 Procedure 13 5.11.5 Expression of results . 13 5.12 Gloss level 14 5.12.1 Principle . 14 5.12.2 Test piece . 14 5.12.3 Apparatus 14 5.12.4 Procedure 14 5.12.5 E
20、xpression of results . 14 5.13 Resistance to impact by large-diameter steel ball 15 5.13.1 Principle . 15 5.13.2 Apparatus 15 5.13.3 Test pieces . 15 5.13.4 Procedure 15 5.13.5 Expression of results . 15 6 Test report 15 Annex A (informative) Staining agents 16 Bibliography . 17 DIN EN 14323:2017-07
21、 EN 14323:2017 4 European foreword This document (EN 14323:2017) has been prepared by Technical Committee CEN/TC 112 “Wood-based panels”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by
22、 endorsement, at the latest by September 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifyin
23、g any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This document supersedes EN 14323:2004. Compared to EN 14323:2004 the following modifications have been made: a) reference to new EN 438-2
24、:2016; b) change for light source in 5.4.2 and 5.6.3; c) to principle of resistance to scratching in 5.5.1; d) deletion of wear point for resistance to abrasion in 5.9; e) deletion of resistance to cigarette burn in 5.10. According to the CEN-CENELEC Internal Regulations, the national standards orga
25、nizations 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
26、 Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 14323:2017-07 EN 14323:2017 5 1 Scope This European Standard specifies test methods for the determination of characteristics of melamine faced boards
27、(MFB) as defined in EN 14322. 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 references, only the edition cited applies. For undated references, the latest edition of the referenced
28、 document (including any amendments) applies. EN 324-1, Wood-based panels Determination of dimensions of boards Part 1: Determination of thickness, width and length EN 438-2:2016, High-pressure decorative laminates (HPL) Sheets based on thermosetting resins (usually called laminates) Part 2: Determi
29、nation of properties EN ISO 2813, Paints and varnishes Determination of gloss value at 20, 60 and 85 (ISO 2813) EN ISO 3668, Paints and varnishes Visual comparison of the colour of paints (ISO 3668) EN ISO 4892-2:2013, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lamps
30、(ISO 4892-2:2013) ISO 9352, Plastics Determination of resistance to wear by abrasive wheels 3 Test pieces The test pieces for the following tests shall be taken at least 150 mm from the edge of the product. When needed, the longitudinal or transverse direction of the decorative surface shall be spec
31、ified by the manufacturer for the tests on the products. 4 Conditioning of test pieces Unless specified otherwise for the individual tests, the test pieces shall be tested in the received state. In cases of dispute or for type approval, the test pieces shall be conditioned in an atmosphere of (23 2)
32、 C and (50 5) % relative humidity to constant mass prior to testing. 5 Test methods 5.1 Dimensions (thickness, length and width) These properties shall be determined in accordance with EN 324-1. 5.2 Flatness 5.2.1 Principle Flatness is determined by measuring the maximal deviation of the board surfa
33、ce from a metal straight edge placed at two selected positions parallel to the long and short edges of the board or panel. 5.2.2 Apparatus Straight edge, of (1 000 1) mm length, with dial indicator gauge (comparator) graduated to permit a reading accuracy of 0,1 mm. DIN EN 14323:2017-07 EN 14323:201
34、7 6 5.2.3 Test pieces The test piece shall be the complete board under test, as received, stored in the conditions recommended by the manufacturer. 5.2.4 Procedure Place the board in a vertical position free from restraint with one long edge resting on an essentially horizontal floor. Place the flat
35、ness gauge on the concave surface at various positions. At each position, measure the greatest distance between board surface and the flatness gauge with an accuracy of 0,1 mm. 5.2.5 Expression of results The result of the test is the highest recorded reading on the dial gauge in millimetres to the
36、nearest 0,1 mm. 5.3 Edge damage 5.3.1 Principle Edge damage is determined by placing a graduated mask or tape measure on the board or panel under test and measuring the size of chips of paper removed from the edges. 5.3.2 Apparatus A metal tape measure or mask graduated in divisions of 1 mm. 5.3.3 T
37、est pieces The test piece is the board or panel as received. 5.3.4 Procedure The test piece is laid level on a protective surface. Loose surface contamination is to be removed using a soft brush. Using the metal tape measure or the mask the size of the chip is measured at right angles to the board e
38、dge, across the chip towards the centre of the board. 5.3.5 Expression of results Record the dimensions of the largest chip of paper removed to the nearest millimetre (mm). 5.4 Surface defects 5.4.1 Principle Inspection of boards for surface appearance under standardized conditions of lighting and v
39、iewing. Surface defects are larger than 0,8 mm2and those that can be identified when the surface texture is viewed from a distance of 0,7 m and at an angle about of 45. 5.4.2 Apparatus The light source shall provide a diffused illumination of (1 200 400) lx over the whole area. This may either be di
40、ffused daylight or be diffused artificial light. The daylight shall be unaffected by surrounding trees, etc. When artificial daylight is used, it shall have a correlated colour temperature of (5 000 to 6 500) K and a Ra greater than 92, by using a colour matching booth in accordance with EN ISO 3668
41、. A convenient distance of the lights from the inspection table is approximately 1,5 m. DIN EN 14323:2017-07 EN 14323:2017 7 5.4.3 Test pieces The test piece shall be the board under test, as received. 5.4.4 Procedure Place the board, decorative face uppermost, on the inspection table and wipe it fr
42、ee of any loose contamination, if necessary, with a soft cloth and any suitable cleaning agent if necessary. Inspect it from the distance required (specified in 5.4.1) for defects such as smudges, smears, finger-prints, scratches, foreign particles, damage or any other form of blemish evident within
43、 the decorative surface. In case of cut to size panels the inspection shall be performed on the edges too. The evaluation of the total area of spot-type defects in square millimetres and of the total length of hair-like defects in millimetres may be carried out with the help of the Tappi Size Estima
44、tion Chart1)or with an equivalent system. In case of dispute the inspection shall be carried out by three observers using the Tappi Chart or an equivalent system. The inspector shall have normal vision, corrected if necessary. No magnifying glass shall be used in viewing the sheet. In cases of doubt
45、 or dispute, three observers are required for the visual assessment. 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. 5.4.5 Expression of results Record all defects identifying type, n
46、umber and size of defects and sum up surfaces and length. The admissible size of defects is based on a maximum contamination area equivalent to a unit of defects and is proportional to the standard delivery size of the manufacturer. The total admissible area of contamination may be concentrated in o
47、ne spot or dispersed over an amount of smaller defects. In case of pre-cut panels the cumulative defect is referred to the standard delivery sizes of the manufacturers or amount of delivery. EXAMPLE Permitted unit of defect (see EN 14322) in this sample is 2 mm2/m2Standard delivery size of the manuf
48、acturer: 5 000 mm 2 000 mm Points: The permissible total error (TE) is calculated as follows: TE = Board length Board width Permitted unit of defect = 5 000 mm 2 000 mm 2 mm2/m2= 20 mm2The following errors are therefore permitted: 1 20mm2defect,or 2 10mm2defect,or 3 6,6 mm2defect etc. Length: The pe
49、rmissible total error (TE) is calculated as follows: TE = Board length Board width Permitted unit of defect = 5000 mm 2000 mm 20 mm/m2= 200 mm 1) “Tappi Size Estimation Chart” is the trade name of a product supplied by TAPPI, Technology Park, P.O. Box 105113, Atlanta, GA 30348-5113, USA, tel. +1 770 446 1400, fax +1 770 446 6947. The article reference is: TAPPI - Dirt size estimation chart. “Tappi size estimation chart” is
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