BS 6526-1998 Domestic oven gloves Requirements and test methods《家用炉手套规范 要求和试验方法》.pdf

1、BRITISH STANDARD BS 6526:1998 Incorporating Amendment No. 1 Domestic oven gloves Requirements and test methods ICS 13.340.10 BS 6526:1998 This British Standard, having been prepared under the direction of the Health and Environment Sector Board, was published under the authority of the Standards Boa

2、rd and comes into effect on 15 September 1998 BSI 1 October 2002 First published September 1984 Second edition September 1998 The following BSI references relate to the work on this standard: Committee reference PH/3/8 Draft for comment DC/541318 DC ISBN 0 580 29586 9 Committees responsible for this

3、 British Standard The preparation of this British Standard was entrusted by Technical Committee PH/3, Protective clothing, to Subcommittee PH/3/8, Protective gloves, upon which the following bodies were represented: British Agrochemicals Association Ltd. British Glove Association British Leather Con

4、federation British Motorcyclists Federation British Railways Board British Rubber Manufacturers Association Ltd. British Safety Industry Federation British Textile Technology Group Chief and Assistant Chief Fire Officers Association European Resin Manufacturers Association Fire Brigades Union Health

5、 and Safety Executive Home Office Ministry of Defence Personal Safety Manufacturers Association RAPRA Technology Ltd. SATRA Technology Centre Textile Services Association Ltd. Amendments issued since publication Amd. No. Date Comments 13967 1 October 2002 See national forewordBS 6526:1998 BSI 1 Octo

6、ber 2002 i Contents Page Committees responsible Inside front cover Foreword ii Introduction 1 1S c o p e 1 2 Normative references 1 3T e r m s a n d d e f i n i t i o n s 2 4 Construction and performance 2 5M a r k i n g 3 Annex A (normative) Method for the determination of the rate of thermal diffu

7、sion through domestic oven gloves 5 Annex B (informative) Design recommendations for domestic oven gloves 9 Bibliography 11 Figure 1 Dimensions for gloves joined in pairs with straight pockets 3 Figure 2 Dimensions for gloves joined in pairs with slanted pockets 4 Figure 3 Gloves with a thumb Minimu

8、m internal width 4 Figure A.1 Brass cylinder 6 Figure A.2 Mounting stand 7BS 6526:1998 ii BSI 1 October 2002 Foreword This British Standard has been prepared by Subcommittee PH/3/8. It supersedes BS 6526:1984, which is withdrawn. The transport by hand of hot items in a domestic kitchen is always a h

9、azardous operation. The purpose of this standard is to specify oven gloves with thermal insulation properties and dimensions that allow for the safe transport of these hot items, thus reducing the ever-present risk of accident in the domestic kitchen. Annex A is normative and Annex B is informative.

10、 The start and finish of text introduced or altered by Amendment No. 1 is indicated in the text by tags . This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself

11、confer immunity from legal obligations. In particular attention is drawn to: Trade Descriptions Act 1968 1; Textile Products (Indications of Fibre Content) Regulations 1986 and subsequent amendments 2; Materials and Articles in Contact with Food Regulations 1987 (as amended) 3; Personal Protective E

12、quipment (EC Directive) Regulations 1992 4. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 11 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.BS 6526:1998 BSI 1 October 2002 1

13、 Introduction The main factors that this standard seeks to address are those associated with the safety of domestic oven gloves. Major considerations in the assessment of these factors are that the rate of heat penetration through the insulating material adequately protects the hand and wrist area,

14、and that there is continued satisfactory performance of the gloves after washing. As hand sizes vary, the standard allows for differing sizes of oven gloves to be produced, by specifying only minimum dimensions of gloves. The minimum inside length for gloves joined in pairs is shorter than that for

15、single gloves, as the full length inside could restrict movement and hence reduce safety. The major task experienced by the committee was to develop a test to assess the thermal insulation properties of oven gloves. The method that was developed (see Annex A) uses a brass cylinder which is heated to

16、 150 C before being placed on the oven glove. This particular cylinder was chosen in an attempt to reproduce the contact pressure that may be exerted when removing a hot item from a domestic oven. Whilst domestic ovens can reach temperatures of approximately 250 C, a cylinder temperature of 150 C is

17、 specified for the test. When developing the test procedure, it was found that the use of higher temperatures did not significantly alter the performance characteristics of the glove material, although the temperature increased. Thus, the performance figures specified for rise of temperature are rel

18、evant for this test procedure using a 150 C cylinder and are not necessarily the same as the actual temperature rise experienced by the user. The method of test specified in BS 6526:1984 was found to have inadequate inter-laboratory reproducibility. This test method has been revised in the current s

19、tandard to tighten the tolerances and procedure to reduce the variability. After inter-laboratory trials it was established that there still remains a variability of 4 C within the test. This variability has been taken into account when calculating the results of the test. The procedure for extended

20、 testing, where a single failure is recorded has been retained in this version of BS 6526, recognizing the inherent variability of textile materials. In preparing this standard, the results were considered for a range of different oven gloves and due note was taken of the results obtained in selecti

21、ng the performance criteria. These criteria have been chosen so that oven gloves conforming to this standard possess acceptable thermal insulation as determined by a user trial. A user trial was conducted in which a panel of users assessed the insulation performance and dimensions of a range of oven

22、 gloves. The results correlated well with those obtained from the test that was developed, and account was taken of the results when specifying the performance requirements in this standard. The requirement of 4.2 for minimum ironing temperature is intended to ensure some protection against material

23、 failure when heated. 1 Scope This British Standard specifies minimum dimensions and performance requirements for materials and thermal properties for oven gloves used in domestic situations together with requirements for marking. A method for the determination of the rate of thermal diffusion throu

24、gh domestic oven gloves is given in Annex A and design recommendations are given in Annex B. This British Standard is applicable to all types of domestic oven gloves with the exception of gloves which are intended for use with domestic barbecues. NOTE Oven gloves used in similar commercial and indus

25、trial situations are covered by the EC Directive 89/686 5, which is implemented into UK law by the Personal Protective Equipment (EC Directive) Regulations 1992 4. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions

26、 of this British Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS EN ISO 5084, Methods for the determination of thickness of textile materials. BS E

27、N 23758, Textiles Care labelling code using symbols. BS 7305, Method for the determination of the maximum safe ironing temperature of fabrics.BS 6526:1998 2 BSI 1 October 2002 BS EN 20139, Textiles Standard atmospheres for conditioning and testing. BS EN 26330, Textiles Domestic washing and drying p

28、rocedures for testing. 3 Terms and definitions For the purposes of this British Standard, the terms and definitions given in BS 7305 and the following apply. 3.1 domestic oven gloves gloves, mittens and pockets, which may be joined in pairs by fabric, intended for handling hot items NOTE Oven gloves

29、 are generally employed for short-term contact, e.g. when transferring hot articles from a domestic oven to a nearby surface, and are not intended for prolonged contact with hot items. 3.2 sample single glove or mitt from which a specimen(s) will be cut for testing NOTE For gloves that are reversibl

30、e, each side of the glove constitutes a sample. 3.3 specimen material cut from a sample on which a single thermal test is carried out 4 Construction and performance 4.1 General After being washed and flat dried once in accordance with BS EN 26330: programme 4A or according to the care instructions s

31、upplied, and then conditioned as described in BS EN 20139, the oven gloves shall conform to 4.2 to 4.5. 4.2 Materials 4.2.1 Safe ironing temperature When tested in accordance with BS 7305: a) The safe ironing temperature of the oven gloves shall be not less than 220 C. b) There shall be no sticking

32、of the surface to the block. c) Any discoloration shall be reported in the test report (see BS 7305 and Clause A.8 of this British Standard). 4.2.2 Multi-layer construction oven gloves When touched and observed, the layers of multi-layer construction oven gloves shall not separate or deform such tha

33、t the glove comes apart and the insulation shall be uniform within the total pockets or palm area. NOTE 1 Poorly stitched gloves may easily pull apart. Some non-woven insulation materials are known to ball after washing, leaving uninsulated patches. This may occur when inadequate provision has been

34、made to retain the material in its as-purchased position within the oven glove. NOTE 2 Annex B provides design recommendations for domestic oven gloves. 4.2.3 Thickness of material covering the back of the hand of non-reversible gloves For oven gloves that are not reversible, the minimum thickness o

35、f material covering the back of the hand shall be 1.5 mm, when measured as described in BS EN ISO 5084, using a pressure of 1.0 0.01 kPa using a 200 020mm 2 foot. 4.3 Thermal insulation When tested in accordance with Annex A, the temperature rise after 10 s shall not be greater than 30 C. Oven glove

36、s that are reversible, i.e. where either side can be used as protection for the palm of the hand, each side shall be tested as a separate sample.BS 6526:1998 BSI 1 October 2002 3 4.4 Dimensions The minimum dimensions for oven gloves shall be as follows. a) Gloves joined in pairs: 190 mm for the insi

37、de length of thermal insulation of the pocket; 140 mm for the inside width of the pocket measured at the cuff edge; and 400 mm for the length of joining material. (See Figure 1 and Figure 2). b) Single gloves: 240 mm from the inside finger tip of the glove to the cuff edge; 140 mm for the inside wid

38、th measured at the cuff edge. NOTE Gloves may be split at one or both sides, provided protection on either side of the hand is maintained and a minimum internal unsplit glove length of 240 mm is retained for both sides of the glove. 120 mm internal width across the palm to the thumb join for gloves

39、with a thumb (see Figure 3). 5 Marking Oven gloves shall be permanently marked with the following information: a) the number and date of this British Standard, i.e. BS 6526:1998 1) ; b) the name, trademark or other means of identification of the manufacturer or supplier ; c) instructions or any prec

40、autions concerning care; including appropriate care labelling symbols in accordance with BS EN 23758. 1) Marking BS 6526:1998 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements

41、of the standard. The accuracy of the claim is solely the claimants responsibility. Such a declaration is not to be confused with third-party certification of conformity. Figure 1 Dimensions for gloves joined in pairs with straight pocketsBS 6526:1998 4 BSI 1 October 2002 Figure 2 Dimensions for glov

42、es joined in pairs with slanted pockets Figure 3 Gloves with a thumb Minimum internal widthBS 6526:1998 BSI 1 October 2002 5 Annex A (normative) Method for determination of the rate of thermal diffusion through domestic oven gloves A.1 Principle The material forming the palm of an oven glove is plac

43、ed on a thermocouple which is mounted on a polyethylene block and linked to temperature recording equipment. A heated brass cylinder is placed on the material and the temperature rise is recorded after a specified interval. A.2 Apparatus A.2.1 Heat shield, made of non-thermally conductive material s

44、uch as polyethylene and sufficiently large to prevent heat transmission to the test piece. A.2.2 Thermocouples 2) . A.2.2.1 Calibrated thermocouple, to measure temperatures in the range of at least 0 C to 160 C with an accuracy of 1.5 C (see A.4). A.2.2.2 K-type nickel-chromium/nickel-aluminium ther

45、mocouple, with an exposed junction and nominal wire diameter 0.19 mm for fast response and minimum heat loss down the leads, insulated with polytetrafluoroethylene (PTFE) to within 5 mm to 10 mm of junction, calibrated to measure temperatures in a range 0 C to 100 C to an accuracy of 1.5 C. A.2.3 Br

46、ass cylinder, conforming to the specified dimensions given in Figure A.1 and having a clean flat lower surface. All the other dimensions are nominal as it is the mass per unit area in contact with the test specimen that is required to measure the thermal insulation. The total mass of the cylinder (i

47、ncluding any heating source and attachments) shall be 3 000 g 30 g. A.2.4 Mounting stand, with a mechanism for lowering the brass cylinder (A.2.3) on to the test material. The stand shall have a suitable attachment for the cylinder so that no pressure other than the cylinder mass (A.2.3) is placed o

48、n the test material. NOTE Figure A.2 shows a typical mounting stand. A.2.5 A heating source, capable of heating to, and maintaining, a temperature of 150 C. NOTE A heating cord/tape which is wrapped around the brass cylinder is an example of a heating source. A.2.6 Heat-sink compound. A.2.7 Temperat

49、ure recording equipment or microprocessor system, for use with the thermocouples (A.2.2.1 and A.2.2.2). NOTE The temperature recording equipment, particularly for the thermocouple given in A.2.2.2, can be linked through an electronic linearizer which has a built-in cold junction compensator. This enables the conversion of thermal electromagnetic force into temperature and provides a s