1、March 2012 Translation by DIN-Sprachendienst.English price group 7No 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 5
2、9.080.60!$zb“1875863www.din.deDDIN EN 994Textile floor coverings Determination of the side length, squareness and straightness of tilesEnglish translation of DIN EN 994:2012-03Textile Bodenbelge Bestimmung der Lnge und Geradheit der Kanten und der Rechtwinkligkeit von FliesenEnglische bersetzung von
3、 DIN EN 994:2012-03Revtements de sol textiles Dtermination de la longueur des artes, de lquerrage et de la rectitude des dallesTraduction anglaise de DIN EN 994:2012-03SupersedesDIN EN 994:1995-08www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document co
4、mprises 9 pages02.12 DIN EN 994:2012-03 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 134 “Resilient textile and laminate floor coverings” (Secretariat: BSI, United Kingdom). The responsible German body involved in its prepar
5、ation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-04-09 AA Prfung und Verwendungsbereichseinstufung von textilen Bodenbelgen. Amendments This standard differs from DIN EN 994:1995-08 as follows: a) the text has been technically revised; b) in the Germ
6、an version, the term Mabestimmung has been changed to Lnge; c) 8.2 “Straightness and squareness” has been revised; d) Figure 1 and Figure 3 have been revised; e) normative references have been updated. Previous editions DIN EN 994: 1995-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 994 Jan
7、uary 2012 ICS 59.080.60 Supersedes EN 994:1995English Version Textile floor coverings - Determination of the side length, squareness and straightness of tiles Revtements de sol textiles - Dtermination de la longueur des artes, de lquerrage et de la rectitude des dalles Textile Bodenbelge - Bestimmun
8、g der Lnge und Geradheit der Kanten und der Rechtwinkligkeit von FliesenThis European Standard was approved by CEN on 20 November 2011. 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
9、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. This European Standard exists in three official versions (English, French, German). A version
10、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 members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
11、 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, Turkey and United Kingdom. Management Centre: Avenue Marnix 17, B-100
12、0 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 994:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEN 994:2012 (E) 2 Contents Page Foreword 31 Scope 42 Norma
13、tive references 43 Principle 44 Apparatus .44.1 Length .44.1.1 Measurement device .44.1.2 Support plate 44.1.3 Rigid plate .44.2 Squareness .44.2.1 Precision square 44.2.2 Flat surface .54.2.3 Rigid plate .54.2.4 Shims 55 Sampling and preparation of test specimens .56 Conditioning .57 Test method 57
14、.1 Length .57.2 Squareness and straightness .58 Calculation and expression of results .78.1 Length .78.2 Straightness and squareness .79 Test report 7DIN EN 994:2012-03 EN 994:2012 (E) 3 Foreword This document (EN 994:2012) has been prepared by Technical Committee CEN/TC 134 “Resilient, textile and
15、laminate floor coverings”, the secretariat of which is held by BSI. 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 July 2012, and conflicting national standards shall be withdrawn at the latest b
16、y July 2012. 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 994:1995. The following is a list of signific
17、ant technical changes between this European Standard and the previous edition: the text has been technically revised, Figure 1 and Figure 3 have been revised, and the normative references have been updated. According to the CEN/CENELEC Internal Regulations, the national standards organizations of th
18、e following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania
19、, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 994:2012-03 EN 994:2012 (E) 4 1 Scope This European Standard specifies a method for determining the length and straightness of the edges and the squareness of floor coverings in the form of right-angled tiles. 2
20、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 edition of the referenced document (including any amendments) applies. EN ISO 139:2005, Textiles St
21、andard atmospheres for conditioning and testing (ISO 139:2005) 3 Principle The plane dimensions of a tile are measured at different points for each direction. In addition, at each corner of the tile the maximum deviation from the right angle is measured. 4 Apparatus 4.1 Length 4.1.1 Measurement devi
22、ce Device which can be used to measure a dimension to an accuracy of 0,05 mm such as a slide gauge, comparator table with stop or an opto-electronic system. 4.1.2 Support plate Flat support plate, on to which the test specimen is placed for measurement. It shall be slightly bigger than the test spec
23、imen. 4.1.3 Rigid plate Rigid metal or glass plate, slightly smaller than the tile or any other device which can be used to hold the tile flat during measurement. 4.2 Squareness 4.2.1 Precision square Precision square or any other device, for example an opto-electronic system which can be used to me
24、asure a right angle or angular deviation to an accuracy of at least 0,2 mm. If a square is used, it shall meet the following requirements: a) The length of one of the straight edges shall be at least equal to the largest dimension of the tile to be checked, the second straight edge being not greater
25、 than 2/3 of this dimension; b) The linearity error of the straight edges shall be less than or equal to 0,01 mm; c) The angular error shall be less than or equal to 0,02 mm at 300 mm. DIN EN 994:2012-03 EN 994:2012 (E) 5 4.2.2 Flat surface Flat surface as described in 4.1.2. 4.2.3 Rigid plate Rigid
26、 plate as described in 4.1.3. 4.2.4 Shims Set of shims, including 0,2 mm to 2,0 mm shims. 5 Sampling and preparation of test specimens Take at least five tiles from each sample to represent the test specimens. If the sample comprises a pack of tiles, ensure that the first and last tiles are not used
27、 as test specimens. 6 Conditioning Condition the tiles in the standard atmosphere for testing textiles as defined in EN ISO 139 for at least 24 h. Conduct the tests in this atmosphere. 7 Test method 7.1 Length Hold the test specimen flat using, the rigid plate described in 4.1.3. Measure the distanc
28、e between the edges parallel to the direction of manufacture, then between the edges perpendicular to the direction of manufacture, in at least two different points. If a different device is used, proceed as appropriate. 7.2 Squareness and straightness Place the tile with its back against the flat s
29、upport plate. Place one edge of test specimen against a straight edge of the square or appropriate device and slide it until it makes contact with the other straight edge, then position the rigid plate without moving the tile. Select the thickest shim which can be easily inserted between the second
30、straight edge of the square and the end of the edge of the tile to evaluate the squareness deviation (see Figures 1 and 2). Find the thickest shim which can easily be inserted at any point between the second straight edge of the square and the tile to evaluate the straightness of the edges (see Figu
31、re 3). Repeat this procedure for the three other test specimen edges. If a different device is used, proceed as appropriate. DIN EN 994:2012-03 EN 994:2012 (E) 6 Figure 1 Squareness Figure 2 Squareness Figure 3 Straightness DIN EN 994:2012-03 EN 994:2012 (E) 7 8 Calculation and expression of results
32、 8.1 Length For each tile and direction, calculate the average of the measurements taken. Express the length of the edge by the result obtained in millimetres to one decimal place. 8.2 Straightness and squareness Express the maximum deviation for each edge of each tile in millimetres to an accuracy
33、of 0,05 mm. a) For the end of the edge for squareness; b) At any point of the edge for straightness. Note the biggest deviation of a) or b) for each side. Calculate the determined maximum deviation (in mm) for squareness and straightness in percentage from the nominal side length of the tile (in mm)
34、 by the following formula: D = (M / N) x 100%) where D is deviation in % M is maximum deviation in mm N is nominal tile dimension in mm 9 Test report The test report shall include the following information: a) reference to this European Standard, i.e. EN 994:2012; b) complete identification of the p
35、roduct tested, including the type, origin, manufacturers reference numbers; c) details of the sample; d) number of test specimens (tiles) submitted for testing; e) average general length for each direction; f) difference between the smallest and largest average length for each direction; g) value of the deviation for each edge of each tile and if this relates to squareness or straightness; h) any deviation from this standard which is likely to have affected the results. DIN EN 994:2012-03
