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1、International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEXdYHAPOAHAR OPrAHH3AWlR l-l0 CTAHJWTM3AlWl.ORGANISATION INTERNATIONALE DE NORMALISATION Rubber boota, unlined moulded Bottes en caoutchouc moulkes non doublhes Second edition - 1983-05-01 UDC 678.4/.8 : 688.314.3 Descriptors : r
2、ubber products, footwear, boots, specifications. Ref. No. lSO3910-1983 (E) Price bared on 4 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or n
3、etworking permitted without license from IHS -,-,- Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bedies). The work of developing International Standards is carried out through ISO technical committees. Every membe
4、r body interested in a subject for which a technical committee has been authorized has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technica
5、l committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO 3910 was developed by Rubber and rubber products. Technical Committee ISO/TC 45, This second edition was submitted directly to the ISO Counc
6、il, in accordance with clause 6.11.2 of part 1 of the Directives for the technical work of ISO. lt cancels and replaces the first edition (i.e. ISO 3910-1976), which had been approved by the member bodies of the following countries: Belgium Italy Brazil Mexico Canada Netherlands Czechoslovakia New Z
7、ealand Egypt, Arab Rep. of Romania France South Africa, Rep. of India Spain Sweden Turkey USA USSR Y ugoslavia The member body of the following men t on tech nical grounds : 0 country had expressed disapproval of the docu- Switzerland International Organkation for Standardkation, 1983 Printed in Swi
8、tzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 39104983 Ru
9、bber boots, unlined moulded 1 Scope and field of application This International Standard specifies the requirements for general purpose unlined rubber boots moulded in one piece. 2 References ISO 34, Rubber, vulcanized - Determination of tear s trength (trouser, angle and crescent test piecesl. ISO
10、37, Rubber, vulcanized - Determination of tensile s tress- strain properties. ISO 188, Rubber, vulcanized - Accelerated ageing or heat- resistance tests. ISO 471, Rubber - Standard temperatures, humidities and times for the conditioning and testing of test pieces. ISO 1382, Rubber - Vocabulary. 3 Ma
11、terials The rubber Parts of the boot shall be homogeneous and free from porosity. 4 Thickness The thickness of the rubber shall be not less than as shown in figure 1 at the Points indicated for the upper part of the boot, and as shown in table 1 for the Soling and heel. Table 1 - Minimum thicknesses
12、 Dimensions in millimetres Cleated Soling, mens Cleated Soling, womens Heel, mens Heel, womens Over cleats Between cleats 13 8 11 73 25 - 20 - The thickness of the heel shall be measured on the outside edge along the length of the heel. 5 Physical properties of Soling and heels 5.1 Tensile requireme
13、nts before ageing Three test pieces shall be tut from both the Soling and heels and then reduced to the required thickness by careful buffing, or any other suitable method, taking care to avoid an increase in temperature. The tensile strength and elongation at break shall then be determined accordin
14、g to the method specified in ISO 37. The median of these results shall be at least the ap- propriate value given in table 2. A smaller dumb-hell test piece may be used for the heels, if size makes this necessary. The size of the dumb-bell shall be stated when expressing results. All three test piece
15、s shall be free from visible defects. If the median of the results is below, and the highest value equal to or above, the appropriate value given in table 2, two further pieces shall be tested. The material shall not be deemed to comply with the requirements unless the median of all five results is
16、at least the appropriate value given in table 2. 4 Table 2 - Tensile strength and elongation at break requirements before ageing Minimum tensile Minimum elongation strength at break MPa % 1 Soling and heel 1 8,O I 200 I 5.2 Tensile requirements after ageing After ageing for 168 h at a temperature of
17、 70 + 1 OC, in accor- dance with ISO 188, the tensile strength and elongation at break of Soling and heels determined as in 5.1 shall be in accor- dance with the values given in table 3. Table 3 - Tensile strength and elongation at break requirements after ageing Tensile strength Elongation at break
18、 f % of initial value % of initial value I Soling and heel l Ik 20 + IO - 30 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or networking permitted w
19、ithout license from IHS -,-,- ISO 3910-1983 (El 5.3 Pear resistance of upper The tear resistance of the upper shall be not less than 80 N when tested in accordance with the method described in ISO 34. The grain of the Sample tested shall be at right angles to the length of the Sample. 5.4 Resistance
20、 to dry heat ageing All rubber component Parts shall be capable of withstanding, without developing any signs of brittleness or tackiness, ex- posure to air at a temperature of 100 31 1 OC and at at- mospheric pressure for a period of 24 h in a suitable apparatus. For the purpose of this test, the t
21、est pieces may be entire ar- ticles or pieces tut from them. After heat exposure, test pieces shall receive a minimum of 2 days rest Prior to further testing (sec 5.5). 5.5 Flexing resistance of upper When tested in accordance with the method described in the annex, after having been submitted to th
22、e dry heat ageing test given in 5.4, the upper shall withstand not less than the number of continuous flexes given in table 4 without the rubber face showing pinholes or any sign of cracking when viewed with the unaided eye. For this purpose only those Parts of the test piece shall be observed which
23、 are under tension during the test, i.e. the folds which form a diamond shape. Pinholes or cracking associated with machine darnage shall be ignored. The test pieces shall receive a minimum of 2 days rest after having been subjected to the dry heat ageing test given in 5.4. The testing equipment sha
24、ll be kept away from any Source of ozone. Table 4 - Flexing test limits 6 Marking Esch article of footwear shall with the following particulars : be indelibly and legibly marked a) size; b) manufacturers identification ; c) reference number Standards organization. issued by the appropriate national
25、Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 39104983 (El Dimensions in millimetres Cl D
26、 - F Section of upper from.toe to heel Figure 1 - Unlined moulded rubber boot Dimensions in millimetres 32 F7 Section of upper from top of boot to heel Figure 2 - Test piece for flexing test 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NA
27、SA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or networking permitted without license from IHS -,-,- t so 3910-1983 (El Annex Method of testina resistance to flexing A.1 Apparatus The apparatus shall have the following essential features. The machine shal
28、l have an adjustable stationary part provided with grips 25 mm across, for holding one end of each of the test pieces in a fixed Position, and a similar reciprocating part for holding the other end of each of the test pieces. The reciprocating part shall be arranged so that its motion is in the dire
29、ction of, and in the same plane as, the centre line be- tween the grips, and its travel shall be adjusted so that the two sets of grips approach each other to a distance of 13 mm and separate to a distance of 57 mm. The eccentric which actuates the reciprocating part shall be driven by a constant Sp
30、eed motor to give 340 to 400 flexing cycles per minute, with sufficient power to flex at least six and preferably twelve test pieces at one time. The test pieces shall be arranged in two equal groups, so that one group is being flexed while the other group is being straightened, thus reducing the Vi
31、bration in the machine. The grips shall hold the test pieces firmly, and shall enable individual adjustment to be made to the test pieces. A.2 Test pieces The test pieces shall have the dimensions shown in figure 2. Four test pieces shall be tut from the thinnest Portion of the leg part of the upper
32、. Care shall be taken to ensure that the test pieces are tut cleanly from the same material. A.3 Fitting The test piece shall be folded symmetrically about its major axis. In the folded condition one tapered end shall be inserted into the fixed central grip and pushed in until the test piece touches
33、 the grip Pins. This fixed grip shall then be tightened. The corresponding movable grip shall then be taken out to its fullest extent, the test piece inserted and pulled flat, and the grip tightened. It is recommended that Clips be used to keep the edges together during the insertion of the test pie
34、ce in the grips, but their removal is essential before flexing commences. NOTE - The test piece shall not be under tension. A.4 Procedure A complete to-and-fro movement of the grip shall be counted as one flex cycle. The length of test shall be calculated in flex cycles and not in time units. The fl
35、ex cycles may be determined by using a trip-counter operated by one of the movable grips. The ambient temperature shall be one of the Standard temperatures laid down in ISO 471. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical St
36、andards 1/9972545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/99
37、72545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 22:28:51 MDTNo reproduction or networking permitted without license from IHS -,-,-