1、BRITISH STANDARD Hospital bedding - Part 2: Combustion modified, flexible polyurethane, general purpose foam mattress cores - Specification ES 11.140 3s 5223-2:1999 ncorpomting :orrigendumNo. 1 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS 5223-2:1999 Amd.No. 10617 Chgmdu
2、mNa 1 Committees responsible for this British Standard Date Comments August 1999 indicated by a sideline The preparation of this British Standard was entrusted to Technical Committee FW/5, Beds, upon which the following bodies were represented: Association of British Healthare Industries Castor Manu
3、facturem (UK) Association Furniture Industry Research Association htite of hading Standards Administration National Bed Federation Limited National Fillings haes Association Tissue Viability Society UK Steel Association This British Standard, having been prepared under the direction of the Consumer
4、products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15May 1999 O BSI 08-1999 Amendments issued since publication First published 1979 Second edition 1992 lWrd edition 1999 The following BSI references relate to the work on thi
5、s standard: Committee reference FW/5 Draft for comment 9W02731 DC ISBN O 680 28261 1 STD*BSI BS 5223-2-ENGL 1779 = Lb24bb7 0778388 OT2 W BS 6223-21999 Contents page Committees responsible inside front cover Foreword ii 1 Scope 1 2 Normative references 1 3 Dimensions 4 Construction 5 Performance 6 Ig
6、nitabiiity 7 Marking Annex A (normative) Schedule 1 to Statutory Instrument: 19% No. 1324 Consumer Protection. The Furniture and Furnishings BiblioairaDhv Inside back cover (Fire) (Safety) Regulations 1988 3 O BSI 08-1999 STDDBSI BS 5223-2-ENGL 1999 D 1b24bb7 0798389 T39 = BS 5223-2:1999 Foreword Th
7、is part of BS 5223 has been prepared by Technical Committee FW/5 and is a revision of the 1992 edition which is withmwn. Requirements for ignitability have been included in this revision. In this respect attention is drawn to the Furniture and Furnishings me) (Safety) Regulations, Statutory Instrume
8、nt 1988 (SI No. 1324)1, the Furniture and Furnishings (Fire) (Safety) (Amendment) Regulations 1989 (SI No. 2358)23 and the Furniture and Fumishlligs (Fire) (Safety) (Amendment) Regulations 1993 (SI No. 207)3 from which the test to identify combustion modified materiais has been quoted in annex k Req
9、uirements for sterilization and disinfection have been omitted as it is believed that sterilization and disinfection of hospital mattresses are no longer current hospital practices. Requirements for reinforced edges, joint strength and packaging have also been omitted Annex A is normative. A British
10、 Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front c
11、over, an inside front cover, pages i and ii, pages 1 to 3, a blank page, an inside back cover and a back cover. The BSI copyright notice displayed throughout this document indicates when the document was last issued Sidelining in this document indicates the most recent changes by amendment. ii OBSI
12、O?-1999 STD=BSI BS 5223-2-ENGL 1777 Lb2ilbb7 0798370 750 BS 6223-2:1999 1 Scope This part of BS 5223 specifies requirements for mattress cores made of flexible, combustion modified polyurethane foam for use in hospital wards. It provides for two classes of general purpose mattress core as follows: -
13、 Class 1. Mattress cores for bedsteads and cots for adult patients; - Class 2. Mattress cores for bedsteads, cots and maternity cribs for children. This part of this standard does not apply to mattresses for special purposes or mattresses comprising more than one layer of foam. This part of this sta
14、ndard does not include requirements for mattress covers. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this British Standard. For dated references, subsequent amendments to, or revisions of, any of these pu
15、blications do not apply. For undated references, the latest edition of the publication referred to applies. BS 1694: 1990, Specification for hospital ward cots for children. BS 3379: 1991, Specification for flexible polyurethane cellular materials for loadbearing applications. I BS 4443-1:1988, Meth
16、ods of test forflexible cellular mamals -Part 1: Methods 1 to 6. BS 4443-2:1988, Methods of test forflexible cellular matemals - Part 2: Method 7. Indentation hardness test. BS 444341989, Methods of test for$exible cellular materia,ls - Part 4: Method 1 O. Detmiwtion of solvent swelling. Method 11.
17、Humidity ageing at an elevated temperature. Method 12. Heat ageing. BS 4443-7:1992, Methods of test for flexible cellular materials - Method 17. Determination of tear strength of flexible cellula,r material with an integral skin. Method 18. Determination of compression set under humid conditions. BS
18、 4886: 1988, Specification for hospital bedsteads. BS 5852-2:1982, Fire tests for furniture - Part 2: Methods of test for ignitability of upholstered composites for seating by flaming sources. BS EN IS0 1856:1996, Polymeric materials, cellular flexible - Determination of compression set. BS EN IS0 3
19、385, Flexible cellular polymeric materials -Deteminution of fatigue by constant load pounding. 3 Dimensions Dimensions for mattress cores shall be as given in Tables 1 and 2. Table 1 - Class 1 mattress cores Dimensions in millimetres 1 1 Length I Width I Depth Mattress cores for general purpose hosp
20、ital bedsteads conforming to BS 4886 I iCri+lO O Table 2 - Class 2 mattress cores Dimensions in miiiimeres Mattress cores for: Length Width Depth Childrens bedsteads 1 600+2: 750+10 ioo+l,O Childrens cots 1295k5 710k5 100+10 conforming to t BS 16941990 Maternity cribs The permitted tolerances on dim
21、ensions for mattress cores if not specified in Tables 1 and 2 shall be as follows: for width and depth mm; for len 20 mm. NOTE Mattress cores may be required for sizes of bedsteads other than those conforming to the British Standards referred to in Tables 1 and 2. Under these circumstances purchaser
22、s may wish to order mattress cores of sizes other than those specified in this standard but which conform to this standard in ail other respects. 4 Construction The mattress core shall be made from single layer, combustion modified, flexible polyurethane foam of type CMB, CM-HB, CM-M or CM-HM as def
23、ined in BS 3379. The structure shail be homogeneous with no corrections or repairs and shall consist of an open, interconnecting cellular construction. It shall be free from physical defects such as splits, tears and large blowholes. NOTE if the mattress core is supplied complete with a cover, the f
24、it of the cover should be such that there is no nicking of the fabric or deformation of the core. O BSI 08-1999 1 - STD-BSI BS 5223-2-ENGL 1999 M Lb24bb 0798393 b97 m BS 5223-2: 1999 5 Performance The foam from which the mattress core is manufactured shall conform to the requirements I given in Tabl
25、e 3. I 6 Ignitability The foam from which the mattress core is manufactured shall satisfy the requirements of annex A. Nm if the mattress core is supplied with a cover the assembly should satisfy the performance requirements given in BS 7177 for medium hazard environments. 7 Marking Mattress cores t
26、hat conform to this standard shall be indelibly marked with the following: a) the name, trade mark or other means of identification of the manufacturer; b) the number and date of this British Standard, e) the month and year of manufacture; d) the nominal dimensions. i.e. BS 5223-2:19991); I NOTE if
27、mattresses are supplied with covers the marking requirements as specified above may be made on the cover. Table 3 - Performance requirements of the foam I l 1 , I I Property Tensile strength (minimum) Loss in tensile strength after a) humidity ageing (maximum) b) heat ageing (maximum) Elonga!ation a
28、t break (minium) Compression set (maximum) Compression set under humidity (maximum) indentation hardness index for: Class 1 mattress cores Class 2 mattress cores Ratio ofindentation hardness index (minimum) Indentation hardness loss (maximum) for: Class 1 mattress cores Class 2 mattress cores Requir
29、ement 90 kPa 10 % 10 96 100 % 8% 12 % 110 N to 140 N 90N to 120 N 1.91 class v as defined in BS 3379 class s as defined in BS 3379 Method of test BS 4443-1:1988, method 3A BS 444341989, method 11 for 3 h at (105 1) “C BS 4443-4: 1989, method 12 for 3 h at (105 f 1)“C BS 4443-1:1988, method 3A BS EN
30、IS0 1856:1996, method 6A using a compressive strain of 75 % BS 4443-7: 1992, method 18 BS 4443-2: 1988, method 7, procedure B at 40 % indentation BS 4443-2: 1988, method 7, procedure B at 40 % indentation BS 4443-2: 1988, method 7,- procedure B at 65 % and 25 % indentation BS EN IS0 3385 BS EN IS0 3
31、385 I 1) Marking BS 5223-2 1999 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behaif of the aanufacturer that the product meets the requirements of the standard. The accuracy of the claim is solely the claimants responsibility. Such a decl
32、aration is not to be confused with third party certification of conformity. 2 O BSI OS-lSSS - STDBBSI BS 5223-2-ENGL 1979 W Lb24bb9 0798392 523 m BS 6223-2:1999 Annex A (normative) Schedule 1 to Statutory Instrument: 1988 No. 1324 Consumer Protection. The Furniture and Furnishings (Fire) (Safety) Re
33、gulations 1988 Part I Ignitabiiity test for polyurethane foam in slab or cushion form 1) The foam shall be tested in accordance with the method set out in BS 5852-2:1982 using cover fabric corresponding to the specification set out in paragraph 2 below. 2) The fabric shall be made of 100 % flame ret
34、ardant polyester fibre. Its construction sha be woven to a plain weave. The yam in the warp shal be of 1.6 decitex fibre, spun to a linear density of 37 tex, Z wist at420 turns per metre. The fabric shail be woven to 20.5 yarn threads per centimetre in the warp. The yam in the weft shail be of 3.3 d
35、ecitex fibre spun to a linear densi of 100 tex, Z twist at 550 tums per metre. The fabric shall be woven to between 12.6 and 13 threads per centimetre in the we& The fabric shall be scoured and heat set. Its mass shali be 220 g/m2 f 5 %. 3) The test rig is placed on a metal imy of sufficient dimensi
36、ons to collect any debris failing from specimens being tested. The rig and debris tray shaU be mounted on a weighing baiance with a remote readout having a fuli-de deflection of at least O kg to 20 kg to an accuracy of 2 g. 4) The foam under test, cut to the specified dimensions, is placed on the te
37、st rig, covered with the fabric specified in paragraph 2 above and tensioned with clips as set out in BS 5852. An ignition some 5 crib is placed in position. The mass of the complete assembly is determined (initiai mass). The test shai be carried out in accordance with BS 5852. In pa&ular flaming or
38、 smouldering failure shali be determined against the criteria of clause 4 of that standard. After flaming and Smouldering have ceased, any debris which has become detached from the specimen shall be removed. The remaining mass of the assembly (fmal mass) is then recorded. 5) If failure against the c
39、riteria of BS 5852-2: 1982 clause 4 has occurred but ony by way of the damage exceeding the limits defined in subclauses 4.1 e), 4.1 f) and 4.2 f) and provided that the resultant mass loss (initiai mass less final mass) is less than 60 g the foam passes the ignitability test. O BSI 08-1999 3 Bibliog
40、raphy Standards publications BS 71771996, Specifkation for resistance to ignition of mattresses, divans and bed bases. Other publications i GREAT BRITAIN. Furniture and furnishings (Fire) (Safety) Regulations 1988. SI 1988 No. 1324. London: The Stationery Office. 2 GREAT BRITAIN. Furniture and furni
41、shings (Fre) (Safety) (Amendment) Regulations 1989. SI 1989 No. 23%. London: The Stationery Office. 3 GREAT BRITAIN. Furniture and furnishings (Fire) (Safety) Regulations 1993. SI 1993 No. 207. London: The Stationery Office O BSI 08-1999 STD.BS1 BS 5223-2-ENGL 1999 1b2qbb9 0798394 3Tb D BS 5223-2:19
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