1、BSI Standards PublicationBS EN ISO 6383-1:2015Plastics Film and sheeting Determination of tearr e s i s t a n c ePart 1: Trouser tear methodBS EN ISO 6383-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO6383-1:2015. It supersedes BS EN ISO 6383-1:2004
2、which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/75, Plastics and rubber film and sheets.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessarypro
3、visions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 88532 7ICS 83.140.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publishe
4、d under the authority of theStandards Policy and Strategy Committee on 31 January 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6383-1 December 2015 ICS 83.140.10 Supersedes EN ISO 6383-1:2004English Version Pl
5、astics - Film and sheeting - Determination of tear resistance - Part 1: Trouser tear method (ISO 6383-1:2015) Plastiques - Film et feuille - Dtermination de la rsistance au dchirement - Partie 1: Mthode de dchirement pantalon (ISO 6383-1:2015) Kunststoffe - Folien und Bahnen - Bestimmung der Reifest
6、igkeit - Teil 1: Hosenrei-Verfahren (ISO 6383-1:2015) This European Standard was approved by CEN on 31 October 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without an
7、y alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other langua
8、ge made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark,
9、 Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR
10、 STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6383-1:2015 EBS EN ISO 6383-1:
11、2015EN ISO 6383-1:2015 (E) 3 European foreword This document (EN ISO 6383-1:2015) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. This European Standard shall be given the status of
12、 a national standard, either by publication of an identical text or by endorsement, at the latest by June 2016, and conflicting national standards shall be withdrawn at the latest by June 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of pat
13、ent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 6383-1:2004. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Euro
14、pean Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slo
15、venia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6383-1:2015 has been approved by CEN as EN ISO 6383-1:2015 without any modification. BS EN ISO 6383-1:2015ISO 6383-1:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14
16、Significance 15 Principle 26 Apparatus . 27 Test specimens 28 Number of test specimens 39 Speed of testing 310 Conditioning 311 Procedure. 312 Expression of results 313 Test report . 4 ISO 2015 All rights reserved iiiContents PageBS EN ISO 6383-1:2015ISO 6383-1:2015(E)ForewordISO (the International
17、Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been esta
18、blished 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. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardiza
19、tion.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance wit
20、h the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any p
21、atent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.Fo
22、r an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.The committee responsible for
23、 this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products.This second edition cancels and replaces the first edition (ISO 6383-1:1983), of which it constitutes a minor revision.ISO 6383 consists of the following parts, under the general title Plastics Film and sheeting Determination of tea
24、r resistance: Part 1: Trouser tear method Part 2: Elmendorf methodiv ISO 2015 All rights reservedBS EN ISO 6383-1:2015INTERNATIONAL STANDARD ISO 6383-1:2015(E)Plastics Film and sheeting Determination of tear resistance Part 1: Trouser tear method1 ScopeThis part of ISO 6383 specifies a method of det
25、ermining the tear resistance of plastic film or sheet less than 1 mm thick, in the form of standard trouser-shaped test specimens, tested under defined conditions of pre-treatment, temperature, humidity, and speed of testing.The method is applicable to film and sheeting of both flexible and rigid ma
26、terials, provided that the material is not so rigid that brittle fracture occurs during the test, or so deformable, in an irreversible way, that the energy used in the deformation of the specimen legs is significant (i.e. is not negligible) with respect to the energy used in tearing.The method may n
27、ot be suitable for determining the tear properties of cellular sheet and film.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated r
28、eferences, the latest edition of the referenced document (including any amendments) applies.ISO 291, Plastics Standard atmospheres for conditioning and testingISO 5273, Plastics Determination of tensile properties Part 3: Test conditions for films and sheetsISO 4591, Plastics Film and sheeting Deter
29、mination of average thickness of a sample, and average thickness and yield of a roll, by gravimetric techniques (gravimetric thickness)ISO 4593, Plastics Film and sheeting Determination of thickness by mechanical scanning3 Terms and definitionsFor the purpose of this document, the following terms an
30、d definitions apply.3.1tearing forceaverage force required to propagate a tear at a constant tearing speed across a test specimen conforming to Figure 13.2tear resistancetearing force divided by the specimen thickness4 Significance4.1 This method may provide data for quality control, acceptance, or
31、rejection in accordance with the terms of specifications and for research and development. ISO 2015 All rights reserved 1BS EN ISO 6383-1:2015ISO 6383-1:2015(E)4.2 Tear properties may vary with specimen preparation, speed of testing, and environment of testing. Consequently, when precise comparative
32、 results are required, these factors shall be carefully controlled.It is possible, in principle, to compare the tear resistance (3.2) of specimens of different materials, provided that their thicknesses do not differ by more than 10 %. However, caution is necessary in interpreting such results, sinc
33、e the tearing energy can vary considerably with speed of testing for different materials.5 PrincipleA rectangular test specimen having a longitudinal slit extending over half its length is subjected to a tensile test on the “trouser legs” formed by the slit. The average force required to tear the sp
34、ecimen completely along its length is used to calculate the tear resistance of the material under test (see Figure 1).6 Apparatus6.1 Tensile testing machine (not pendulum type), similar to that specified in ISO 527-3, having the following characteristics.6.1.1 It shall be power driven and capable of
35、 maintaining the appropriate rate of grip separation specified in Clause 9. It is essential that the load measuring device is equipped with an autographic recording device to record the load applied to the specimen as a function of elapsed time from the start of the test.6.1.2 The grips shall be equ
36、ipped with chucks designed to securely hold the legs of the test specimen without slip. The chucks shall be wider than the width of the test specimen and, in order that they remain parallel to each other during a test, they shall not be mounted on swivel joints.6.2 Suitable equipment for measuring t
37、he thickness of specimens by the method described in ISO 4593. For embossed film or sheeting, the apparatus specified in ISO 4591 shall be used.7 Test specimens7.1 Test specimens shall have the shape and dimensions shown in Figure 1. The length of the slit in the centre of the specimen shall be 75 m
38、m 1 mm.7.2 The test specimens shall be cut so that the edges are smooth and free from notches. Examination with a low-power microscope is recommended to check freedom from nicks. It is important to pay particular attention to the tip of the slit in the centre of the specimen.7.3 The properties of ce
39、rtain types of film and sheeting materials may vary with direction in the plane of the film (anisotropy). In such cases, it is essential to prepare two groups of test specimens with their major axes respectively parallel and perpendicular to the direction of some feature of the film or sheeting whic
40、h is either visible or inferred from knowledge of the method of its manufacture.The direction of testing is defined as the direction of the long axis of the test specimen.With some types of film, different tear resistance results may be obtained for any direction of testing (for example, machine dir
41、ection or transverse direction) depending, for example, in the case of machine direction test specimens, on whether the tear propagation is in the direction of processing or against the process direction (see Figure 2). When this is known to occur, two groups of test specimens shall be cut in the di
42、rection of testing and slit so that results can be obtained for the two possible directions of tear propagation.2 ISO 2015 All rights reservedBS EN ISO 6383-1:2015ISO 6383-1:2015(E)8 Number of test specimens8.1 A minimum of five test specimens shall be tested in each of the required directions of te
43、sting.8.2 Specimens which show a tear out of line to the extent that the tear reaches one of the edges of the test specimen shall be discarded and further specimens tested (see 11.3).9 Speed of testingThe speed of testing shall be one of the following: 200 mm/min 10 %; 250 mm/min 10 %.NOTE At presen
44、t time, both speeds of testing are common throughout the world. For the time being, both are being allowed for the purpose of this part of ISO 6383. Subsequent revisions of this part of ISO 6383 might only incorporate the testing speed of 200 mm/min.10 ConditioningUnless otherwise specified, test sp
45、ecimens shall be conditioned and tested in accordance with ISO 291, using atmosphere 23 C/50 %, except that when a material is known not to be sensitive to humidity, atmosphere 23 C may be used.11 Procedure11.1 Measure the thickness of the material under test using measuring devices complying with t
46、he requirements of ISO 4593. If, however, the film is very thin or if it is embossed, determine the thickness by the method of ISO 4591.11.1.1 When using measuring devices complying with ISO 4593, measure the thickness of the test specimen at three equidistant points between the tip of the slit and
47、the opposite end of the test specimens. Calculate the mean value.11.1.2 When using the method of ISO 4591, the average thickness of the film sample shall be taken as the thickness of the test specimen.11.2 Set the initial separation of the grips to 75 mm. Carefully clamp and align the test specimen
48、legs in the grips so that its major axis coincides with an imaginary line joining the centre of the grips (see Figure 3).11.3 Set to the required speed of testing (see Clause 9), start the machine, and record the load necessary to propagate the tear through the entire un-slit length of the specimen.
49、 If the tear deviates from the centre line to such an extent as to reach one of the edges of the specimen, discard the result and test another specimen.12 Expression of results12.1 The load-time graph from the autographic recorder of the tensile testing machine will show varying trace forms dependent on the nature of the materials tested and their thickness.Disregarding the loads recorded in tearing the first 20 mm and the last 5 mm of the un-slit length, determine the approximate mean value of the tearing load over the r
