EN 14932-2018 Plastics - Thermoplastic stretch films for wrapping silage bales.pdf
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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Plastics - Thermoplastic stretch films for wrapping silage balesBS EN 14932:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14932 January 2018 ICS 55.040; 83.140.10 Supersedes EN 14932:2006English Version Plast
2、ics - Thermoplastic stretch films for wrapping silage bales Plastiques - Films thermoplastiques tirables pour lenrubannage de balles densilage Kunststoffe - Thermoplastische Stretchfolien zum Umwickeln von Silage-Ballen This European Standard was approved by CEN on 20 November 2017. CEN members are
3、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 any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to th
4、e 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 language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Cent
5、re has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuani
6、a, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Scien
7、ce 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14932:2018 ENational forewordThis British Standard is the UK implementation of EN 14932:2018. It supersedes BS EN 14932:2006, which is withdrawn.The UK par
8、ticipation in its preparation was entrusted to Technical Committee PRI/75, Plastics and rubber film and sheets.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Us
9、ers are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 89032 1ICS 83.140.10; 55.040Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the au
10、thority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 14932:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14932 January 2018 ICS 55.040; 83.140.10 Supersedes EN 14932:2006English Ver
11、sion Plastics - Thermoplastic stretch films for wrapping silage bales Plastiques - Films thermoplastiques tirables pour lenrubannage de balles densilage Kunststoffe - Thermoplastische Stretchfolien zum Umwickeln von Silage-Ballen This European Standard was approved by CEN on 20 November 2017. CEN me
12、mbers 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 any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on applica
13、tion 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 language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Manag
14、ement 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, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia
15、, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue d
16、e la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14932:2018 EBS EN 14932:2018EN 14932:2018 (E) 2 Contents Page European foreword 5 Introduction 6 1 Scope . 7 2 Normative references . 7 3 Terms a
17、nd definitions . 8 4 Materials 9 5 Solar reflectance . 9 6 Durability 9 7 Requirements . 10 7.1 General requirements 10 7.2 Requirement for visual inspection 11 7.3 Optional characteristics . 11 7.3.1 Airtightness and oxygen permeability determined on a wrapped artificial bale . 11 7.3.2 Adhesion 11
18、 8 Test methods . 12 8.1 Determination of film thickness . 12 8.1.1 Determination of single point thickness . 12 8.1.2 Determination of average thickness 12 8.2 Determination of width . 12 8.3 Determination of core protrusion . 12 8.4 Determination of film length . 12 8.5 Determination of neck-in du
19、ring film stretching 13 8.6 Determination of tensile characteristics 13 8.7 Determination of impact resistance . 14 8.8 Determination of the tightening force . 14 8.9 Determination of the tear resistance . 14 8.10 Determination of total luminous transmittance . 14 8.11 Determination of resistance to
20、 weathering 14 8.11.1 Principle . 14 8.11.2 Exposure to xenon-arc lamps . 14 8.11.3 Procedure 14 8.11.4 Calculation and expression of results . 15 8.12 Determination of oxygen transmission rate . 15 9 Film acceptance 15 10 Designation 15 11 Marking of packaging . 16 12 Instructions for use of stretc
21、h films 16 13 Instructions for disposal of stretch films and end-of-life . 16 Annex A (informative) Exposure to other light sources . 17 BS EN 14932:2018EN 14932:2018 (E) 3 A.1 Medium pressure mercury vapour lamps 17 A.2 Fluorescent UV lamps . 18 Annex B (informative) Numerical correlation between d
22、urations of stretch forage films exposed to artificial weathering and a natural exposure 20 B.1 Exposure to xenon-arc lamps 20 B.2 Exposure to medium pressure mercury vapour lamps . 20 B.3 Exposure to fluorescent UV lamps . 21 Annex C (normative) Determination of solar reflectance . 22 C.1 General.
23、22 C.2 Principle 23 C.3 Terms and definitions 23 C.4 Apparatus . 23 C.5 Test specimens 24 C.6 Procedure . 24 C.7 Calculation of the solar reflectance Rs. 24 Annex D (normative) Determination of neck-in during stretching . 25 D.1 Introduction . 25 D.2 Principle 25 D.3 Apparatus . 25 D.4 Atmosphere fo
24、r conditioning and testing . 26 D.5 Procedure . 26 Annex E (normative) Determination of tightening force 27 E.1 Principle 27 E.2 Apparatus . 27 E.3 Procedure . 27 E.4 Preparation of the specimens . 27 E.5 Results 27 Annex F (informative) Determination of oxygen permeability and airtightness on an ar
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