1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 1970:2012Hot water bottlesmanufactured from rubberand PVC SpecificationPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when t
2、he documentwas last issued. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 78087 5ICS 83.140.99; 97.180The following BSI references relate to the work on this standard:Committee reference PRI/68Draft for comment 12/30259263 DCPublication historyFirst publ
3、ished May 1953First revision, November 1961Second revision, June 1984Third revision, September 2001Fourth revision, November 2006Fifth (present) edition, December 2012Amendments issued since publicationDate Text affectedBS 1970:2012 BRITISH STANDARDContentsForeword ii1 Scope 12 Normative references
4、13 Composition 24 Physical properties 35 Closures 36 Performance 47 Marking 68 Informative labelling 79 Packaging 9AnnexesAnnex A (normative) Determination of thickness 10Annex B (normative) Determination of capacity 10Annex C (normative) Tests for closures 10Annex D (normative) Test for separation
5、of screw stoppers 12Annex E (normative) Seam test 12Annex F (normative) Determination of pressure resistance 13Annex G (normative) Determination of tension set 13Annex H (normative) Determination of creep resistance 14Bibliography 15List of figuresFigure 1 Hot water bottle components 2Figure 2 Examp
6、le of date daisy 7Figure C.1 Small parts cylinder 12List of tablesTable 1 Minimum thickness of hot water bottles 3Table 2 Full thickness tear strength 6Summary of pagesThis document comprises a front cover, an inside front cover, pages i to ii,pages 1 to 16, an inside back cover and a back cover.BRI
7、TISH STANDARD BS 1970:2012 The British Standards Institution 2012 iForewordPublishing informationThis British Standard is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 31 December 2012. Itwas prepared by Technical Committee PRI/68, H
8、ot water bottles. A list oforganizations represented on this committee can be obtained on request to itssecretary.SupersessionThis British Standard supersedes BS 1970:2006, which is withdrawn.Information about this documentThis new edition of BS 1970 incorporates technical changes only. It does notr
9、epresent a full review or revision of the standard, which will be undertaken indue course.The main technical changes in this edition are: the additional requirement in 4.3 that the inside faces are not to stick orblock together during the filling test; in 6.4.3, the reduction of the minimum elongati
10、on at break of PVC testpieces from 200% to 150%; additional safety instructions in Clause 8 on labelling and information.The previous edition, published in 2006, was a full revision of the standard,based on current knowledge and research funded by the DTI.Hot water bottle manufacture has evolved and
11、 the 2006 edition encompassednew production methods that were not reflected in the requirements of the2001 edition. The 2006 revision attempted to address these new productiontechniques by requiring hot water bottles to be tested as products and not thematerials they are manufactured from.The “full
12、thickness” tensile strength and the full thickness tear strengthintroduced in the 2006 edition are requirements that assess the material,production method and mould design. The aim of this standard is to provide theminimum specification for safe hot water bottles and, in so doing, prevent someof the
13、 injuries that might have been a consequence of unsafe products.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, explanation and general informa
14、tive material is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standa
15、rd cannot confer immunity from legalobligations.BRITISH STANDARDBS 1970:2012ii The British Standards Institution 2012Attention is drawn to the Toys (Safety) Regulations 2011 1, which areapplicable to hot water bottles that have any play value in the form of toys, orthat include toys.Attention is als
16、o drawn to BS EN 71-1, Safety of toys Part 1: Mechanical andphysical properties.BRITISH STANDARD BS 1970:2012 The British Standards Institution 2012 iiiBRITISH STANDARDBS 1970:2012This page deliberately left blankiv The British Standards Institution 20121 ScopeThis British Standard specifies require
17、ments for the physical properties andperformance of both rubber and PVC hot water bottles, designed for completeor partial filling with hot water by the user.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in thisdocument and are indispensable for its a
18、pplication. For dated references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.BS 2071, Specifications for Soxhlet extractorsBS EN 71-1:2011, Safety of toys Part 1: Mechanical and physical propertiesBS EN 71-3:
19、1995, Safety of toys Part 3: Specification for migration of certainelementsBS EN ISO 527-1, Plastics Determination of tensile properties Part 1: GeneralprinciplesBS EN ISO 527-3, Plastics Determination of tensile properties Part 3: Testconditions for films and sheetsBS ISO 34-1, Rubber, vulcanized o
20、r thermoplastic Determination of tearstrength Part 1: Trouser, angle and crescent test piecesBS ISO 37, Rubber, vulcanized or thermoplastic Determination of tensilestress-strain propertiesBS ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness(hardness between 10 IRHD and 100 IRHD)B
21、S ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heatresistance testsBS ISO 815-1, Rubber, vulcanized or thermoplastic Determination ofcompression set Part 1: At ambient or elevated temperaturesBS ISO 2285, Rubber, vulcanized or thermoplastic Determination of tension setunder co
22、nstant elongation, and of tension set, elongation and creep underconstant tensile loadBS ISO 23529, Rubber General procedures for preparing and conditioning testpieces for physical test methodsBRITISH STANDARD BS 1970:2012 The British Standards Institution 2012 1Figure 1 Hot water bottle componentsF
23、unnelNeck blockFilling apertureStopper or closureBody of bottle3 CompositionWhen tested in accordance with BS EN 71-3:1995, the hot water bottle shall notcontain proportions (by mass) of migratory elements in excess of the limits inTable 1 of BS EN 71-3:1995.BRITISH STANDARDBS 1970:20122 The British
24、 Standards Institution 20124 Physical properties4.1 Visual examinationSee Figure 1 for hot water bottle components.When inspected with the naked eye, the hot water bottle shall not exhibit:a) inclusions of foreign matter;b) tears, blisters, cuts; orc) any other defects that could adversely affect th
25、e safe performance of thehot water bottle.NOTE Attention should be paid to the neckbody intersection where trimming canresult in a nick which acts as a stress raiser that weakens the product in this area.The visual examination shall continue during the preparation of test pieces asthe discovery of a
26、ny of these detrimental defects will constitute failure toconform to this standard.4.2 ThicknessThe hot water bottle shall, at no point on its surface, have a thickness less thanthat shown in Table 1, according to its capacity and the material of construction.Thickness shall be determined in accorda
27、nce with the method in Annex A, andthe capacity determined in accordance with the appropriate method in Annex B.Table 1 Minimum thickness of hot water bottlesRubber hot water bottles PVC hot water bottlesCapacity Minimum thickness Capacity Minimum thicknessmL mm mL mm 2 000 1.4 800 1.5 2 000 1.5 800
28、 2 000 1.7 2 000 1.84.3 Filling characteristicsThe minimum filling aperture shall not be less than 18 mm diameter.If the diameter of the filling aperture is less than 20.3 mm, the bottle shall beequipped with an integral filling funnel having a minimum capacity of 60 mLwith the stopper fitted, and e
29、xtending beyond the height of the stopper.When the hot water bottle is filled with the recommended volume of water at(23 2) C, the inside faces shall not stick or block together and the bottle shallfill to its recommended capacity within 30 s.5 Closures5.1 GeneralThe hot water bottle shall be provid
30、ed with a stopper that, when tested inaccordance with C.3, Test 1 and C.4, Test 2 shall show no visible leakage and novisible damage to the closure.When tested in accordance with C.5, Test 3, the closure and any of itsdetachable parts shall not fit entirely in any orientation within the small partsc
31、ylinder having dimensions as in Figure C.1.BRITISH STANDARD BS 1970:2012 The British Standards Institution 2012 35.2 Test for separation of screwed closuresWhen tested in accordance with Annex D, there shall be no leakage orseparation between:a) the stopper and the ferrule;b) the ferrule and the nec
32、k block;c) the neck block and the body of the hot water bottle.There shall be no other visual defects that could impair the integrity of thebottle.5.3 Rubber componentsIf a rubber washer is used as part of a screw stopper or if a rubber plug (push-inrubber stopper) is provided, the rubber shall have
33、 a hardness of between55 IRHD and 80 IRHD, when determined in accordance withBS ISO 48, Method N.The rubber compound from which a plug or washer is manufactured shall havea compression set of not greater than 30%, when determined in accordancewith BS ISO 815-1, using Type B test pieces, for 24h with
34、 a temperature of(70 1) C maintained during the compression period.When tested in accordance with C.4, Test 2, the rubber washer shall not exhibita loss of thickness greater than 30%.6 Performance6.1 LeakageThe hot water bottle body shall show no visible leakage when inflated with airto a minimum pr
35、essure of (14 0.5) kPa and immersed in water for a minimumtime of 5 s.6.2 Strength of bonded (or welded) seamsIf present, bonded (or welded) seams shall withstand a minimum tensile force of72 N when tested in accordance with Annex E.6.3 Pressure testThe hot water bottle shall show no visible leakage
36、 when tested in accordancewith Annex F.6.4 Tensile stressstrain properties6.4.1 GeneralRubber hot water bottles shall be tested in accordance with 6.4.2. The fullthickness tensile properties as specified in 6.4.2.1, 6.4.2.2 and 6.4.2.3 shall bedetermined in accordance with BS ISO 37, using rate of g
37、rip separation of500 mm/min. Type 1 dumb-bell test pieces shall be used, unless the shape of thebottle is such that Type 1 dumb-bells cannot be cut from it, whenBS ISO 37 Type 2 dumb-bell test pieces shall be used.PVC hot water bottles shall be tested in accordance with 6.4.3. The full thicknesstens
38、ile properties as specified in 6.4.3.1, 6.4.3.2 and 6.4.3.3 shall be determinedin accordance with BS EN ISO 527-1 using a rate of grip separation of500 mm/min. BS EN ISO 527-3 Type 5 dumb-bell test pieces shall be used, unlessthe shape of the bottle is such that Type 5 dumb-bells cannot be cut from
39、it,when BS ISO 37 Type 2 dumb-bell test pieces shall be used.BRITISH STANDARDBS 1970:20124 The British Standards Institution 2012The full thickness tensile properties shall be determined on the hot water bottlewithout removing any embossing or ribbing from the test pieces. The strengthshall be calcu
40、lated as the maximum load in newtons at break divided by thewidth of the central parallel portion of the dumb-bell used.NOTE The width is normally taken from measurements made on the cutter.A minimum of three test pieces (preferably five) shall be taken in two directionsfrom the hot water bottle. If
41、 the embossing or ribs are unidirectional, the testpieces shall be taken so that their major axis is parallel to the embossing or ribsand at right angles to the embossing or ribs. If the embossing or ribs are notunidirectional, take test pieces in two directions at right angles to incorporatethe pos
42、sible maximum and minimum strength.6.4.2 Tensile tests for rubber hot water bottles6.4.2.1 Tensile stressstrain properties before ageingWhen tested in accordance with 6.4.1, the tensile strength shall be not less than22.5 N/mm width and the elongation at break shall be not less than 500%.6.4.2.2 Ten
43、sile stressstrain properties after ageingAfter ageing the test pieces in an air circulating oven for (168 2) h at atemperature of (70 1) C in accordance with BS ISO 188, the tensile strengthshall be not less than 17.0 N/mm width and the elongation at break shall be notless than 425%.6.4.2.3 Tensile
44、stressstrain properties after immersionAfter continuous immersion of the test pieces in distilled water of a temperatureof (70 1) C for (95 1) h, the tensile strength shall be not less than21.0 N/mm width and the elongation at break shall be not less than 425%. Thetest pieces shall be measured befor
45、e immersion in the water. After theimmersion period, the test pieces shall be stored in water at (23 2) C for aperiod of not less than 16 h and not more than 96 h before testing.6.4.3 Tensile tests for PVC hot water bottles6.4.3.1 Tensile stressstrain properties before ageingWhen tested in accordanc
46、e with 6.4.1, the tensile strength shall be not less than12 N/mm width and the elongation at break shall be not less than 150%.6.4.3.2 Tensile stressstrain properties after ageingAfter ageing in an air circulating oven as described in BS ISO 188 for (168 2) hat a temperature of (100 2) C and, when t
47、ested in accordance with 6.4.1, thetensile strength shall be not less than 12 N/mm width and the elongation atbreak shall be not less than 150%.6.4.3.3 Tensile stressstrain properties after extractionAfter Soxhlet extraction with water of the test pieces over (168 2) h using anapparatus in accordanc
48、e with BS 2071, the tensile strength of the test piecesshall be not less than 12 N/mm width and the elongation at break shall be notless than 150% when tested in accordance with 6.4.1.6.5 Other material specific requirements6.5.1 Tension set for rubber hot water bottlesWhen determined in accordance
49、with Annex G, the tension set shall be notmore than 20% of the original length.BRITISH STANDARD BS 1970:2012 The British Standards Institution 2012 56.5.2 Percentage mass change after extraction for PVC hot water bottlesAfter Soxhlet extraction with water of the test pieces over (168 2) h, using anapparatus in accordance with BS 2071, the percentage mass change shall be5% to +15% inclusive.6.5.3 Creep resistance for PVC hot water bottlesWhen tested in accordance with Ann
