BS 5131-6 2-1979 Methods of test for footwear and footwear materials - Codes of practice - Code of practice for the identification in footwear wear trials of major weaknesses in de.pdf

1、BRITISH STANDARD CONFIRMED AUGUST1992 BS5131-6.2: 1979 Methods of Test for footwear and footwear materials Part 6: Codes of practice Section 6.2 Code of practice for the identification in footwear wear trials of major weaknesses in design or construction and the assessment of fitness-for-purpose UDC

2、 685.31:620.1:006.86.620.16BS5131-6.2:1979 This British Standard, having been prepared under the directionof the Clothing Standards Committee, was published under the authority ofthe Executive Board and comesinto effect on 31December1979 BSI 12-1999 The following BSI references relate to the work on

3、 this standard: Committee reference CLT/7 Draft for comment79/35457DC ISBN 0 580 11093 1 Foreword This code of practice has been prepared under the direction of the Clothing Standards Committee at the request of representatives of consumer bodies, retailers and the footwear industry, with the object

4、 of regularizing procedures for wear trials on new styles and constructions of footwear. A British 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

5、 itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to3 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendm

6、ent table on the inside front cover. Amendments issued since publication Amd. No. Date of issue CommentsBS5131-6.2:1979 BSI 12-1999 i Contents Page Foreword Inside front cover 1 Scope 1 2 Reference 1 3 Definitions 1 4 Recommendations for the conduct of the trail 1 5 Expression of results 2 Table 1 W

7、ear trial categories and duration 2 Table 2 Example of wear trial report form 3ii blankBS5131-6.2:1979 BSI 12-1999 1 1 Scope This code makes recommendations to assist manufacturers and distributors in carrying out wear trials on new styles of footwear to identify major weaknesses in design or constr

8、uction and to assess fitness-for-purpose. It covers the number of pairs of footwear to be used in the trial, the selection of wearers, the length of the trial, and the procedure for judging whether the footwear has completed the trial satisfactorily. The code defines a number of wear trial categorie

9、s which differ in the amount and type of wear, and indicates appropriate types of footwear for each category. There are two durations of wear for each category; the shorter, for identifying major weaknesses in design or construction, and the longer, for assessing fitness-for-purpose. This code is no

10、t intended to form the basis of a continuous quality control system. Wear trials designed to give a direct comparison of the performance of different materials or constructional features are covered in BS5131-6.1 1) . 2 Reference This Section refers to the following standards publication: BS5131, Me

11、thods of test for footwear and footwear materials Section6.1 Code of practice in footwear trials for the comparative evaluation of footwear. 3 Definitions For the purposes of this Section of BS5131 the following definitions apply. 3.1 footwear all types of boots, shoes, sandals, slippers, etc 3.2 su

12、bjects the wearers of the footwear for the duration of the trial 3.3 wear day approximately eight hours (continuous or non-continuous) duration of wear 3.4 activity session one normal period of the specific sport or activity 3.5 process fault a deviation from good manufacturing practice that leads t

13、o a failure in wear 3.6 failure any defect that, if occurring at the corresponding stage of normal wear, would permit the consumer to return the shoes with a justified complaint 4 Recommendations for the conduct of the trial 4.1 At least six pairs of the footwear, preferably covering a range of size

14、s, should be used for the trial. 4.2 Subjects should be selected who can be relied upon to wear and return the footwear as requested. 4.3 Subjects whose present footwear shows signs of an abnormal wear pattern should be rejected. 4.4 Subjects selected should be of the sex, approximate age and occupa

15、tion appropriate to the intended use of the footwear. Footwear intended for a special purpose or activity, e.g.football boots, should be worn only by subjects engaged in such an activity during the trial. NOTEAccelerated results may be produced by the selection of known hard wearers or particularly

16、harsh environments, but the approximate relationship to normal wear should be known. 4.5 The footwear should be fitted to the subjects to a commercial standard. It is important to achieve a good standard of fit in order to ensure meaningful results from the trial. NOTEWhere appropriate, hosiery shou

17、ld be worn both at fitting and for the duration of the trial. 4.6 The wear trial category appropriate to the footwear should be selected using the examples given in Table 1 as a guide. The duration of the trial should then be shown in Table 2 for that category and type of trial. 4.7 It would be adva

18、ntageous if the intervals of wear could be recorded by the subject. 4.8 At least two-thirds of the trial footwear should be examined at intervals corresponding to approximately10%,20%,50% and100% of the appropriate full fitness-for-purpose trial duration and any failures should be recorded at each s

19、tage. NOTEIf the trial is to establish only that there are no major weaknesses in design or construction then only the first two of these examinations (i.e.at the10% and20% stages) need be made. 1) In course of preparation.BS5131-6.2:1979 2 BSI 12-1999 4.9 As deemed necessary by the organizers, it i

20、s permissible to replace components during the trial to allow other aspects of the footwear to be evaluated. Necessary replacements should be noted and should not affect the fit or the normal dynamic function of the footwear. 4.10 Any corrective action that involves a major constructional or compone

21、nt change will necessitate a repeated wear trial. 5 Expression of results 5.1 Results and all relevant information should be reported in a standardized format. Table 2 represents an example of a suitable form of report. 5.2 All failures should be reported, for example under “Comments” in Table 2, an

22、d causes assigned for possible corrective action to be taken. (See4.10.) 5.3 The footwear will be deemed to have passed a trial to identify major weaknesses in design or construction only if, within the appropriate wear trial duration given in Table 1, no failures occur that can be attributed clearl

23、y to design or construction alone and not to process faults. 5.4 The footwear will be deemed to have passed a trial to assess fitness-for-purpose only if, at the end of the appropriate wear trial duration given in Table 1, not more than5% of the footwear finally examined (or one shoe if the sample s

24、ize is less than ten pairs) has failed owing to either process faults or faults resulting from weaknesses in design, construction or materials. Table 1 Wear trial categories and duration Wear trial category Duration of full wear trial Examples of typical footwear types in the category Identification

25、 of major weaknesses in design or construction Fitness-for-purpose A 5 wear days 25 wear days Pram shoes B 10 wear days 50 wear days Adult fashion boots and shoes Childrens fashion boots and shoes Infants footwear Slippers Sandals C 20 wear days 100 wear days Town and casual shoes Childrens school s

26、hoes and basic sandals Occupational footwear D 30 wear days 150 wear days Heavy duty industrial and safety footwear Walking boots E 10 activity sessions 50 activity sessions Training shoes Sports footwear Dancing shoes F 15 activity sessions 75 activity sessions Heavy duty sports footwear NOTEThe ex

27、amples given for each category are intended as a general guide to the trial duration to be selected. Individual manufacturers may wish to evaluate their products in an alternative category.BS5131-6.2:1979 BSI 12-1999 3 Table 2 Example of wear trial report form FOOTWEAR Type: Style: Construction and

28、materials: Sizes: Reference: Category of wear trial (see Table 1): SUBJECTS/ENVIRONMENT Number: Size(s): Age range: Occupation type: Wear environment: WEAR Full fitness-for-purpose trial duration wear days (W) or activity sessions (S) First examination ( 10% W or S) Comments: Second examination ( 20

29、% W or S) a Comments: Third examination ( 50% W or S) Comments: Final examination(100% W or S) Comments: RESULT Satisfies/does not satisfy the requirements of a category wear trial (see Table 1) to identify major weaknesses in design or construction/assess fitness-for-purpose. a End point of trial t

30、o assess major weaknesses in design or construction.BS5131-6.2: 1979 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level.

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