【正文】 nuous surveillance are laid down in Table 3 for E 1 products and table 4 for E 2 products. NOTE 1 Boards of Class E 1 can be used without causing an indoor air concentration greater than 0,1 ppm HCHO in condi tions according to ENV 7171. The test requirement does not apply to plywood to which no formaldehyde containing material were added during production or in postproduction processing. These may be classified E 1 without testing. NOTE 2 Example of such plywood is uncoated, coated or overlaid plywood glued with resins emitting either no formaldehyde or negligible amounts of formaldehyde after production as e. g. isocyanate, or phenolic glue. NOTE 3 The limit values for the class E 1 are given in Table 3 and for class E 2 are given in Table 4. `,``,`,`,`,`,`,``,``,`,`,`,` Copyright British Standards Institution Reproduced by IHS under license with BSI Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2020 05:10:42 MST Questions or ments about this message: please call the Document Policy Group at 3033972295. 8 EN 636:2020 (E) Conditioning of test pieces Factory production control For factory production control by gas analysis, a test may be carried out within 3 days of production. A value of 5 mg/m2 (release class E 1) or 12 mg/m2 (release class E 2 ) gives an indication that the plywood will probably conform to the values given in Tables 3 and 4 after conditioning for 4 weeks. The manufacturer has to ensure this correlation. External control The test pieces shall be conditioned for 4 weeks at (20 2)176。 I S C H ES KOM I TEE F 220。 EN 6363: 1996 English version Plywood Specifications Contreplaqu233。 BSI 30 July 2020 ISBN 0 580 42353 0 Summary of pages This document prises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Copyright British Standards Institution Reproduced by IHS under license with BSI Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2020 05:10:42 MST Questions or ments about this message: please call the Document Policy Group at 3033972295. `,``,`,`,`,`,`,``,``,`,`,`,` EUROPEAN STANDARD NORME EUROP201。Copyright British Standards Institution Reproduced by IHS under license with BSI Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2020 05:10:42 MST Questions or ments about this message: please call the Document Policy Group at 3033972295. `,``,`,`,`,`,`,``,``,`,`,`,` BRITISH STANDARD BS EN 636:2020 Plywood — Specifications The European Standard EN 636:2020 has the status of a British Standard ICS Copyright British Standards Institution Reproduced by IHS under license with BSI Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2020 05:10:42 MST Questions or ments about this message: please call the Document Policy Group at 3033972295. Amd. No. Date Comments `,``,`,`,`,`,`,``,``,`,`,`,` BS EN 636:2020 National foreword This British Standard is the official English language version of EN 636:2020. It supersedes BS EN 6361:1997, BS EN 6362:1997 and BS EN 6363:1997 which are withdrawn. The UK participation in its preparation was entrusted to Technical Committee B/541, Wood based panels, which has the responsibility to: — aid enquirers to understand the text。ENNE EUROP196。 Exigences Sperrholz Anforderungen This European Standard was approved by CEN on 18 March 2020. CEN members are bound to ply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T 201。 R NOR M U NG Management Centre: rue de Stassart, 36 B1050 Brussels 169。C and (65 5) % relative humidity before testing. Table 3 — Definition of formaldehyde class E 1 Initial type testinga Test method ENV 7171 Requirement Release 0,124 mg/m3 air Factory production control Test method EN 7172 Requirement Release 3,5 mg/m2 h or 5 mg/m2 h within 3 days after production a For established products, initial testing may also be done on the basis of existing data with EN 7172 testing, either from factory production control or from external inspection. Table 4 — Definition of formaldehyde class E 2