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1、BRITISH STANDARD BS 4965:1991 Specification for Decorative laminated plastics sheet veneered boards and panels Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 08:49:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4965:1991 This British Standard, having been prepared under the direction of th
2、e Plastics and Rubber Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 31 October 1991 BSI 03-1999 First published July 1974 Second edition June 1983 Third edition October 1991 The following BSI references relate to the work on this standa
3、rd: Committee reference PRM/76 Draft for comment 90/41099 DC ISBN 0 580 19859 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Plastics and Rubber Standards Policy Committee (PRM/-) to Technical Committee PRM/76, upon which the followin
4、g bodies were represented: Association of Suppliers to the Furniture Industry Ltd. British Laminated Plastics Fabricators Association Ltd. British Plastics Federation Fibre Building Board Organization Fibre Cement Manufacturers Association Ltd. Furniture Industry Research Association Standards Assoc
5、iation of Australia Society of Motor Manufacturers and Traders Ltd. United Kingdom and Ireland Particleboard Association Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 08:49:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4965:1991 BS
6、I 03-1999i Contents Page Committees responsible Inside front cover Foreword ii 1Scope1 2Definitions1 3Classification1 4Materials requirements2 5Appearance2 6Dimensional tolerances2 7Adhesion of laminate to core4 8Performance of fire-rated boards or panels4 9Marking4 Appendix A Items for agreement be
7、tween purchaser and supplier5 Appendix B Method for the determination of surface irregularities5 Appendix C Method for the determination of flatness5 Appendix D Method of test for adhesion8 Appendix E Examples of application and usage of symbols9 Figure 1 Suitable arrangement for viewing for surface
8、 irregularities6 Figure 2 Suitable instrument for measuring flatness7 Figure 3 Suggested tool for adhesion test8 Table 1 Categories of surface laminates and typical applications2 Table 2 Core materials used for particular durability classes3 Table 3 Typical performance of adhesives3 Publications ref
9、erred to Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 08:49:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4965:1991 ii BSI 03-1999 Foreword This British Standard has been prepared under the direction of the Plastics and Rubber Standards Policy Committee, from an initia
10、l draft submitted by the British Laminated Plastics Fabricators Association Ltd. It is a revision of BS 4965:1983, which is superseded and withdrawn. The most significant change in this revision is to the nomenclature used to describe the various board and panel categories. Some substrates have also
11、 been regraded. With these changes, the suitability of the product to meet the demands of various environments, the resistance expected of the laminate surface to wear and tear, and the fire rating of the board or panel, if applicable, should now be instantly recognizable in a wide European context.
12、 Items which may be considered for agreement between purchaser and supplier are given in Appendix A. Examples of usage of symbols and some suggested applications of the three durability classes are provided in Appendix E. Assessed capability. Users of this British Standard are advised to consider th
13、e desirability of assessment and registration of a suppliers quality systems against the appropriate Part of BS 5750 by a third party certification body. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their co
14、rrect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 10, an inside back cover and a back cover. This standard has been updated (see co
15、pyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 08:49:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4965:1991 BSI 03-19991 1 Scope This British Standard specifie
16、s requirements for decorative laminated sheet, based on thermosetting resins, bonded to a substrate, generally for interior use. It specifies the particular combinations of decorative laminate, substrate and adhesive necessary to meet the following service conditions. a) In normal-humidity condition
17、s with occasional wetting. b) In high-humidity conditions with occasional wetting. c) In prolonged high-humidity conditions and frequent wetting. d) Where, in addition to the above, the board or panel is required to meet statutory Fire Regulations. The type and grade of laminate required to meet the
18、 demands likely to be made on its surface are also specified. NOTE 1The standard is not applicable to boards and panels manufactured by directly applying uncured films to the substrate and performing cure and bond in the same process, nor boards and panels faced with other decorative films such as t
19、hermoplastics. NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this British Standard, the following definitions apply. 2.1 boards composite boards produced in the standard sheet sizes of the manufacturer 2.2 pan
20、els composite panels manufactured to specified sizes 2.3 high humidity relative humidity above 80 % 2.4 normal humidity relative humidity of 40 % to 80 % 2.5 low humidity relative humidity below 40 % 3 Classification 3.1 General The classification of boards and panels shall be indicated by the follo
21、wing symbols: a) the overall durability of the board or panel: D2, D3, D4 (see 3.2); b) the performance rating of the surface laminate: VG, HG, HD (see Table 1); c) the fire rating of the board or panel, if applicable: F1, FO (see 3.4). 3.2 Durability Although the durability of the board or panel is
22、 determined by both the nature of the substrate and the type of adhesive used to bond the facing laminates to it, the classification used shall be that based on EN 204. Adhesive bonds throughout the board or panel shall be classified as follows: D2Occasional short-term exposure to running or condens
23、ed water and/or to occasional high humidity. D3Frequent short-term exposure to running or condensed water and/or long-term exposure to high humidity. D4Frequent prolonged exposure to running or condensed water. NOTEOnly the durability classes D2, D3 and D4 of EN 204 have been cited in this standard.
24、 Class D1 is considered to be of too low a performance level for inclusion in this standard. 3.3 Surface laminate The category of surface laminate shall be determined by its performance when tested in accordance with BS EN 438-2. These categories shall be as given in Table 1, which also provides exa
25、mples of typical applications. 3.4 Fire rating Fire-rated boards and panels shall be classified as follows. F1Where the composite meets the surface spread of flame requirements of class 1 in accordance with BS 476-7. F0Where the composite meets class 0 requirements of Appendix E of the Building Regu
26、lations 1985.1) Because of the hygroscopic nature of fire-retardant additives used in the manufacture of flame-retardant laminates, the edges of flame-retardant panels used in wet applications shall be sealed to prevent moisture ingress. 1) Available from HMSO, 49 High Holborn, London WC1V 6HB. Lice
27、nsed Copy: sheffieldun sheffieldun, na, Fri Dec 01 08:49:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4965:1991 2 BSI 03-1999 Table 1 Categories of surface laminates and typical applications 4 Materials requirements 4.1 Substrates The selection of core materials suitable for use in each durabili
28、ty class shall be as given in Table 2. 4.2 Surface laminates 4.2.1 Decorative laminate sheets These shall be manufactured in accordance with BS EN 438-1 or BS 7332 and shall comply with the performance requirements for their grade and type set out in these standards. NOTEThe board or panel manufactu
29、rer should seek assurance from the laminate manufacturer that any flame-retardant grade of laminate is suitable for the application in the intended durability class. 4.2.2 Backing sheets All boards and panels shall be veneered on their reverse side. The backing sheet for D3 and D4 boards and panels
30、shall comply with the appropriate performance requirements of BS EN 438-1 or BS 7332. NOTE 1Other backing materials may be used on D2 boards and panels providing the composite meets the relevant requirements for durability, flatness (see clause 6.4) and fire performance (see clause 8). NOTE 2For F1
31、and FO fire-rated boards and panels the purchaser may require the backing sheet to possess similar flame-retardant properties to those of the face laminate. 4.3 Adhesives The adhesive types shown in Table 3 shall be regarded as providing the bond of laminate to substrate to the classification shown.
32、 NOTE 1The precise performance of adhesives used should be confirmed with the manufacturers. NOTE 2Polychloroprene contact adhesives are not classified in EN 204 but because of their long trouble-free history when properly applied by spray methods in heated factory environments followed by mechanica
33、l nip rolling pressure, they may be classed as D2 when so applied. Because of the elastomeric nature of this type of adhesive, panel widths in excess of 600 mm should be avoided. All bonds in all classes shall comply with clause 7. 5 Appearance The surface of the laminate, before fabrication, shall
34、comply with 6.4 of BS EN 438-1:1991. Only slight show-through shall be permitted on the surface of the board or panel when inspected in accordance with Appendix B. For high-gloss or satin finishes moderate show-through is permitted on the surface of the board or panel when inspected in accordance wi
35、th Appendix B. Panels or boards for any one scheme shall be matched as to their colour and appearance as specified in 6.2.1 of BS EN 438-1:1991. 6 Dimensional tolerances 6.1 General When using a metal tape or rule graduated to .5 mm the tolerance for both length and width shall be 3 mm for boards an
36、d 1.5 mm for panels. NOTEThe tolerance for thickness is not specified (see A.2). 6.2 Straightness of edges of rectangular finished panels The maximum deviation over 1 m length shall be 0.5 mm when measured in accordance with 7.3 of BS 5669-1:1989. 6.3 Squareness of rectangular finished panels Rectan
37、gular panels when measured in accordance with 7.4 of BS 5669-1:1989 shall be not out of square by more than 1.5 mm in 1 m or 0.15 %. BS 4965 classificationLaminate specification Performance categoryTypical application HD (Heavy duty)BS EN 438-1 (HD) Decorative laminates with greater resistance to ab
38、rasion than HG Flooring and supermarket checkout counters HG (Horizontal grade) BS EN 438-1 (HG) BS 7332 (G) Decorative laminates of high Performance for general use in horizontal applications and for vertical applications requiring particularly high performance Kitchen working surfaces, restaurant
39、and hotel tables; heavy-duty doors and wall coverings; interior walls of transport vehicles, lifts, etc. VG (Vertical grade) BS EN 438-1 (VG) BS 7332 (G) Decorative laminates of lower performance than HG for general use in vertical applications Kitchen and counter front panels, wall coverings, shelv
40、es, etc. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 08:49:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4965:1991 BSI 03-19993 Table 2 Core materials used for particular durability classes Table 3 Typical performance of adhesives Durability classCore materials D2a) Interior-grade plyw
41、ood manufactured from hardwood, free from surface irregularities, meeting the requirements of bond type INT of BS 6566-8. b) Fully glued blockboard or laminboard of 5-ply construction, free from surface irregularities. c) Wood chipboard to type CIA of BS 5669-2. d) Standard hardboard to type SHA of
42、BS 1142. e) Medium-density fibreboard type MDF to BS 1142. f) Vermiculite-based core materials with good moisture resistance, having a minimum perpendicular tensile strength of 0.4 MPa, tested in accordance with the method given in 12.2 of BS 5669-1:1989 D3g) Plywood manufactured from hardwood, free
43、 from surface irregularities, meeting the requirements of bond type CBR of BS 6566-8. h) Tempered hardboard to type THE and THN of BS 1142. i) Medium-density fibreboard type MDFMR to BS 1142. j) Wood chipboard to type C3 (or better) of BS 5669-2. D4k) Plywood with a sanded finish manufactured from d
44、urable hardwood, free from surface irregularities, meeting the requirements of bond type WBP of BS 6566-8. l) Non-asbestos mineral board having a minimum perpendicular tensile strength of 0.4 MPa, tested in accordance with the method given in 12.2 of BS 5669-1:1989. (See note 2.) m) Cement-bonded pa
45、rticleboard with a good sanded finish to type T2 of BS 5669-4. NOTE 1Materials in class D4 automatically meet the requirements of classes D3 and D2. Materials in class D3 automatically meet the requirements of class D2. NOTE 2The manufacturers endorsement that his product is suitable for bonding hig
46、h-pressure laminates should be sought, together with any special recommendations to follow or precautions to be observed. Adhesive typesTypical performance in accordance with EN 204 Emulsion adhesives a) PVAc single component b) PVAc two component D2 D2 D3 D3D4 Condensation adhesives (thermosetting)
47、 c) urea formaldehyde d) urea/melamine formaldehyde e) phenol/resorcinol formaldehyde D2 D2 D2 D3 D3 D3 D4 D4 Reaction adhesives (thermosetting) f) epoxy g) polyurethane adhesives, two-part D2 D2 D3 D3 D4 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 08:49:03 GMT+00:00 2006, Uncontrolled Co
48、py, (c) BSI BS 4965:1991 4 BSI 03-1999 6.4 Flatness When tested in accordance with either method A or method B, given in Appendix C, as-delivered boards and panels having a core thickness of 12 mm and over shall comply with either of the following requirements, as applicable. Method A: The maximum p
49、ermitted deviation is 1 mm; Method B: The maximum permitted deviation is given by the formula where D is the distance between the panel edges (in mm). Example D = 1 200 mm divided by 600 = 2; 2 2 = 4 mm. NOTENumerous factors including changes in temperature and relative humidity, such as are encountered at building sites, may cause boards and panels to bow and twist irreversibly. This requirement therefore is only applicable to boards and panels at the time of delivery. 7 Adhesion of laminate to core When test pieces taken from any point in the