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1、BRITISH STANDARD BS 1970:2001 Incorporating Amendments Nos. 1, 2 and 3 Hot water bottles manufactured from rubber and PVC Specification ICS 83.140.99; 97.180 ? Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 This British Standar
2、d, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 25 September 2001 BSI 2 March 2004 The following BSI references relate to work on this British Standard
3、: Committee reference PRI/68 Draft for comment 00/122668 ISBN 0 580 38439 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PRI/68, Hot water bottles, upon which the following bodies were represented: British Retail Conso
4、rtium British Rubber Manufacturers Association Ltd. Consumer Policy Committee of BSI Department of Trade and Industry National Pharmaceutical Association RAPRA Technology Ltd. Tun Abdul Razak Research Centre Amendments issued since publication Amd. No.Date Comments 1367523 July 2002Revision of 6.4.2
5、.1, 8.2 and 8.3 1435523 April 2003Addition of 4.3, C.5, Figure C.1 and Figure C.2 149092 March 2004 Revision of 5.1 and C.5 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 BSI 2 March 2004 i Contents Page Committees responsibleI
6、nside front cover Forewordii 1Scope1 2Normative references1 3Composition1 4Physical properties1 5Closures2 6Performance2 7Marking4 8Informative labelling5 9Packaging6 Annex A (normative) Determination of thickness7 Annex B (normative) Determination of capacity7 Annex C (normative) Tests for closures
7、7 Annex D (normative) Test for separation of screwed stoppers10 Annex E (normative) Seam test10 Annex F (normative) Determination of pressure resistance10 Annex G (normative) Determination of tension set10 Annex H (normative) Determination of creep resistance11 Figure 1 Example of date daisy4 Figure
8、 C.1 Hot water bottle components8 Figure C.2 Small parts cylinder9 Table 1 Minimum thickness of hot water bottles1 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 ii BSI 2 March 2004 Foreword This British Standard has been prepa
9、red under the direction of Technical Committee PRI/68, Hot water bottles. It combines requirements for both rubber and PVC hot water bottles and supersedes both the following standards which are withdrawn: BS 1970:1984, Specification for rubber hot water bottles. BS 6728-1:1986, Thermoplastics hot w
10、ater bottles Specification for hot water bottles manufactured from PVC compounds. Attention is drawn to the Toys (Safety) Regulations 1995 (UK Statutory Instrument SI 1995 No. 204) which is applicable to hot water bottles that have any play value in the form of toys, or that include toys. Attention
11、is also drawn to BS EN 71-1:2001, Safety of toys Specification for mechanical and physical properties. Annex A, Annex B, Annex C, Annex D, Annex E, Annex F, Annex G and Annex H are normative. This publication does not purport to include all the necessary provisions of a contract. Users are responsib
12、le for its correct 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 11 and a back cover. The BSI copyright notice displayed in this docu
13、ment indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 BSI 2 March 2004 1 1 Scope This British Standard specifies requirements for the physical properties and performance of both rubber
14、 and PVC hot water bottles, designed for complete or partial filling with hot water by the user. 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 amendme
15、nts to, or revisions of, any of these publications do not apply. BS 903-A2:1995, Physical testing of rubber Part A2: Method for determination of tensile stressstrain properties. BS 903-A5:1997, Physical testing of rubber Part A5: Determination of tension set at normal and high temperatures. BS 903-A
16、6:1992, Physical testing of rubber Part A6: Method for determination of compression set at ambient, elevated or low temperatures. BS 903-A26:1995, Physical testing of rubber Part A26: Method for determination of hardness (hardness between 10 IRHD and 100 IRHD). BS 903-A38:1991, Physical testing of r
17、ubber Part A38: Methods for the determination of dimensions of test pieces and products for test purposes. ISO 4648:1991 BS 2071:1989, Specification for Soxhlet extractors. BS 2782-3:Method 321:1994, Plastics Determination of tensile properties Part 3: General principles. BS EN ISO 527-1:1996 BS EN
18、71-3:1995, Safety of toys Part 3: Specification for migration of certain elements. BS ISO 188:1998, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests. 3 Composition When tested in accordance with BS EN 71-3:1995, the hot water bottle shall not contain proportions (by m
19、ass) of migratory elements in excess of the limits in Table 1 of BS EN 71-3:1995. 4 Physical properties 4.1 General appearance When inspected visually, the hot water bottle shall be free from porosity, inclusions of foreign matter, tears, blisters and any other defects that could adversely affect th
20、e safe performance of the hot water bottle. 4.2 Thickness The hot water bottle shall at no point on its surface have a thickness less than that shown in Table 1, according to its capacity and the material of construction. Thickness shall be determined in accordance with the method in Annex A, and th
21、e capacity determined in accordance with the method in Annex B. Table 1 Minimum thickness of hot water bottles Rubber hot water bottlesPVC hot water bottles CapacityMinimum thicknessCapacityMinimum thickness mlmmmlmm k2 0001.4k8001.5 2 0001.5800 k2 0001.7 2 0001.8 Licensed Copy: sheffieldun sheffiel
22、dun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 2 BSI 2 March 2004 4.3 Filling characteristics The 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 be equipped with an in
23、tegral filling funnel having a minimum capacity of 60 ml, with the stopper fitted, and extending beyond the height of the stopper. 5 Closures 5.1 General The hot water bottle shall be provided with a stopper which, when tested in accordance with C.1 and C.2, shall show no visible leakage and no visi
24、ble damage to the closure. When tested in accordance with C.3, the closure and any of its detachable parts shall not fit entirely in any orientation within the small parts cylinder having dimensions as in Figure C.2. 5.2 Test for separation of screwed closures When tested in accordance with Annex D,
25、 there shall be no leakage or separation between: a) the stopper and the ferrule; b) the ferrule and the neck block; c) the neck block and the body of the hot water bottle. 5.3 Rubber components If a rubber washer is used as part of a screw stopper or if a rubber plug is provided, the rubber shall h
26、ave a hardness of between 55 IRHD and 80 IRHD, when determined in accordance with BS 903-A26:1995 Method N. The rubber compound from which a plug or washer is manufactured shall have a compression set of not greater than 30 %, when determined in accordance with BS 903-A6:1992 for 24h with a temperat
27、ure of (70 1) C maintained during the compression period using Type 1 test pieces. When tested in accordance with Annex C, Test 2, the rubber washer shall not exhibit a loss of thickness greater than 30 %. 6 Performance 6.1 Leakage The hot water bottle body shall show no visible leakage when inflate
28、d with air to a minimum pressure of (14 0.5) kPa and immersed in water for a minimum time of 5 s. 6.2 Strength of bonded (or welded) seams If present, bonded (or welded) seams shall withstand a minimum tensile force of 72 N when tested in accordance with Annex E. 6.3 Pressure test The hot water bott
29、le shall show no visible leakage when tested in accordance with the test in Annex F. 6.4 Tensile stressstrain properties 6.4.1 General NOTE Different tensile stressstrain properties are specified, depending on whether the hot water bottle is made from rubber or PVC. Rubber hot water bottles shall be
30、 tested in accordance with 6.4.2. PVC hot water bottles shall be tested in accordance with 6.4.3. 0 2 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 BSI 2 March 2004 3 6.4.2 Tensile tests for rubber hot water bottles 6.4.2.1 Ge
31、neral The tensile properties as specified in 6.4.2.2, 6.4.2.3 and 6.4.2.4 shall be determined in accordance with BS 903-A2:1995. Type 1 dumb-bell test pieces shall be used, unless the shape of the bottle is such that Type 1 dumb-bells cannot be cut from it, when Type 2 dumb-bell test pieces shall be
32、 used. Ribbing and any surface not classed as lightly embossed shall be removed by buffing or slitting and, when this is necessary, tensile strength and elongation of break values not less than 80 % of those specified in 6.4.2.2, 6.4.2.3 and 6.4.2.4 shall be deemed to meet the requirements of this s
33、tandard. Size reduction and acceptance of lower tensile properties do not apply to lightly embossed samples that already meet the test piece thickness and thickness tolerances specified in BS 903-A2:1995. 6.4.2.2 Tensile stressstrain properties before ageing The tensile strength shall be not less th
34、an 14 MPa and the elongation at break shall be not less than 500 %. 6.4.2.3 Tensile stressstrain properties after ageing After ageing the test pieces in an air circulating oven for (168 2) h at a temperature of (70 1) C in accordance with BS ISO 188:1998, the tensile strength shall be not less than
35、10.5 MPa and the elongation at break shall be not less than 425 %. 6.4.2.4 Tensile stressstrain properties after immersion After continuous immersion of the test pieces in distilled water of a temperature of (70 1) C for 96 h, the tensile strength shall be not less than 10.5 MPa and the elongation a
36、t break shall be not less than 425 %. The test pieces are measured before immersion in the water. After the immersion period, the test pieces are stored in water at (23 2) C for a period of not less than 16 h and not more than 96 h before testing. 6.4.3 Tensile tests for PVC hot water bottles 6.4.3.
37、1 General The tensile properties as specified in 6.4.3.2, 6.4.3.3 and 6.4.3.4 shall be determined for the length and width of the bottle in accordance with BS 2782-3:Method 321:1994 using a rate of grip separation of 500 mm/min on material cut from the hot water bottle. Ribbing shall be removed by s
38、litting or buffing. When this is necessary, the same tensile properties specified in 6.4.3.2, 6.4.3.3 and 6.4.3.4 shall apply. 6.4.3.2 Tensile stressstrain properties before ageing When tested in accordance with 6.4.3.1, the tensile strength shall be not less than 6 MPa and the elongation at break s
39、hall be not less than 200 %. 6.4.3.3 Tensile stressstrain properties after ageing After ageing in an air circulating oven as described in BS ISO 188:1998 for (168 2) h at a temperature of (100 2) C and, when tested in accordance with 6.4.3.1, the tensile strength shall be not less than 6 MPa and the
40、 elongation at break shall be not less than 200 %. 6.4.3.4 Tensile stressstrain properties after extraction After Soxhlet extraction with water of the test pieces over a period of (168 2) h, using an apparatus in accordance with BS 2071:1989, the tensile strength of the test pieces shall be not less
41、 than 6 MPa and the elongation at break shall be not less than 200 % when tested in accordance with 6.4.3.1. 6.5 Other material specific requirements 6.5.1 Tension set for rubber hot water bottles When determined in accordance with Annex G, the tension set shall be not more than 20 % of the original
42、 length. 6.5.2 Percentage mass change after extraction for PVC hot water bottles After Soxhlet extraction with water of the test pieces over (168 2) h, using an apparatus in accordance with BS 2071:1989, the percentage mass change shall be p5 % to +15 % inclusive. 0 2 Licensed Copy: sheffieldun shef
43、fieldun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 4 BSI 2 March 2004 6.5.3 Creep resistance for PVC hot water bottles When tested in accordance with Annex H, the percentage creep shall not be greater than 50 %. 7 Marking Each hot water bottle shall be legibly a
44、nd permanently marked with the number and date of this British Standard i.e. BS 1970:20011) and, additionally, with the following in the form of a simple code: a) name or trade mark of the manufacturer or supplier; b) a date daisy (see Figure 1) indicating: year of manufacture (centre circle); month
45、 of manufacture (12 segments); week of manufacture (marks within segments). 1)Marking BS 1970:2001 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 of the standard. The accura
46、cy of the claim is solely the claimants responsibility. Such a declaration is not to be confused with third-party certification of conformity. Figure 1 Example of date daisy Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:19:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1970:2001 BSI 2
47、March 2004 5 8 Informative labelling 8.1 General Each hot water bottle shall be accompanied by the identification of the European manufacturer, or the UK distributor for bottles manufactured outside the European Union, and the following warning in the format given: “WARNING HOT WATER BOTTLES CAN CAU
48、SE BURNS. AVOID PROLONGED DIRECT CONTACT WITH THE SKIN.” If the hot water bottle contains natural rubber, a clear and legible statement shall accompany the product as follows: “This hot water bottle is made of natural rubber.” 8.2 Hot water bottles with screw stoppers Each hot water bottle shall be
49、accompanied by at least the following instructions, depending on the design designated by the manufacturer. a) Hot water bottles designed for partial filling. “When filling this hot water bottle, do not use boiling water and fill to a maximum of two-thirds capacity. Hold the bottle by the neck in an upright position and fill slowly to avoid hot water splashing back. Expel