1、BRITISH STANDARDBS EN ISO 4167:2006Polyolefin agricultural twinesThe European Standard EN ISO 4167:2006 has the status of a British StandardICS 59.080.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g
2、40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 4167:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2006ISBN 0 580 48217 0National forewordThis British Standard is the official English language version of
3、 EN ISO 4167:2006. It is identical with ISO 4167:2006. It supersedes BS EN 906:1996 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee TCI/77, Ropes and cordage and fishing nets, which has the responsibility to: A list of organizations represented on this
4、 committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using th
5、e “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from le
6、gal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summa
7、ry of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 11 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issu
8、ed since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 4167March 2006ICS 59.080.50 Supersedes EN 906:1996 English VersionPolyolefin agricultural twines (ISO 4167:2006)Ficelles agricoles en polyolfines (ISO 4167:2006) Polyolefin-Erntegarne (ISO 4167:2006)This
9、European Standard was approved by CEN on 27 February 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical reference
10、s concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its
11、own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou
12、rg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of
13、exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 4167:2006: EForeword This document (EN ISO 4167:2006) has been prepared by Technical Committee CEN/TC 248 “Textiles and textile products“, the secretariat of which is held by BSI, in collaboration wi
14、th Technical Committee ISO/TC 38 “Textiles“. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2006, and conflicting national standards shall be withdrawn at the latest by September 2006.
15、This document supersedes EN 906:1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungar
16、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN ISO 4167:2006Reference numberISO 4167:2006(E)INTERNATIONAL STANDARD ISO4167Second edition2006-03-01Polyolefin agricu
17、ltural twines Ficelles agricoles en polyolfines EN ISO 4167:2006ii iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Designation . 2 5 Raw materials 2 6 Manufacture. 2 7 Technical properties. 2 8 Sampling 4 9 Test method. 5 10 Form of delivery 9 11 Mark
18、ing 10 12 Make up of batches for sale. 10 Annex A (informative) Recommendations for the care and handling of baler twine 11 EN ISO 4167:2006iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pre
19、paring International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in
20、 liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task
21、 of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention
22、 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. ISO 4167 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 248, Text
23、iles and textile products, in collaboration with Technical Committee ISO/TC 38, Textiles, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This second edition cancels and replaces the first edition (ISO 4167:1979), of which it constitutes a technical
24、revision. EN ISO 4167:20061Polyolefin agricultural twines 1 Scope This International Standard specifies the principal properties of polyolefin agricultural twines, the test methods which permit their verification, and the form of delivery for the twines. 2 Normative references The following referenc
25、ed documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2, Textiles Designation of the direction of twist in yarns and rela
26、ted products ISO 139, Textiles Standard atmospheres for conditioning and testing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 agricultural twine simple yarn intended to be used in agriculture, notably for binding the bundles on automatic p
27、ick-up balers or on similar machines 3.2 batch definite quantity of twine produced under conditions which are presumed uniform 3.3 laboratory sample total selection of samples from a batch intended for testing in the laboratory 3.4 polyolefin principally polypropylene (PP) and high density polyethyl
28、ene (PE) 3.5 specimen quantity of twine on which a test conforming to the requirements of this International Standard is carried out EN ISO 4167:20062 4 Designation A twine shall be designated by the words “agricultural twine”, the number of this International Standard, i.e. ISO 4167, the material f
29、rom which the agricultural twine is made, and the nominal runnage in metres (m) per kilogram (kg) of the agricultural twine. EXAMPLE Designation example: A polypropylene (PP) agricultural twine having a nominal runnage of 350 m/kg is designated as follows: agricultural twine ISO 4167 - PP - 350 5 Ra
30、w materials The raw material used for the manufacture of twine shall consist of polyolefin. Adequate stabilization against degradation by sunlight shall be incorporated. Any ultraviolet (UV) inhibitor system as well as colour pigment may be used. Used colour pigment and stabilizers should not be tox
31、ic. NOTE Attention is drawn to the fact that in some areas of the world, a more stringent level of stabilization may be necessary than in others. The colour of the twine shall be distinguishable from straw and grass. 6 Manufacture Each spool of twine shall be capable of working with continuity throu
32、ghout its length. The twine shall have a Z twist in accordance with ISO 2. Twine should always be removed from the centre of a spool in an anti-clockwise direction. 7 Technical properties The methods used for measuring the technical properties of the agricultural twine shall be as given in Table 1.
33、Table 2 shows indicative characteristics of some twines only; others shall be calculated in accordance with the formulae in this clause and in 9.1.5. In order to assure a minimum quality level, the following formulae are given for determining the technical characteristics of the agricultural twines.
34、 EN ISO 4167:20063For the minimum twine breaking force requirement, the following formula shall be used: twine314508Fn=+ where Ftwineis the minimum twine breaking force, in decanewtons rounded to the nearest integer; n is the specified nominal runnage of the twine, in metres per kilogram, in accorda
35、nce with the procedure given in 9.1. For the minimum average knot breaking force requirement, the following formula shall be used: Fknot= 0,55 Ftwinewhere Fknotis the minimum average knot breaking force, in decanewtons rounded to the nearest integer. For the nominal runnage tolerance requirement, a
36、tolerance of 8 % rounded to the nearest integer shall be allowed. Table 1 Technical properties of polyolefin agricultural twines Relevant property Values of properties Example: Agricultural twine ISO 4167 - PP - 350 Method of test Linear density tex 2492112857+See 9.1. Runnage m/kg 350 28 See 9.1. M
37、inimum twine breaking force daN1)98 See 9.2. Minimum average knot breaking force daN1)54 See 9.3. 1)The SI unit of force is the newton. A force of 1 decanewton (daN) corresponds to that exerted by a mass of 1,02 kg. EN ISO 4167:20064 Table 2 Indicative characteristics of some twines Linear density,
38、lRunnage of the twine Minimum twine breaking force Minimum average knot breaking force nominal tolerance nominal, n tolerance FtwineFknotDesignation/ end use tex tex m/kg m/kg daN daN Round bales 1 176 10387+850 68 45 25 Round bales 1 724 149127+580 46 62 34 Conventional bales 2 326 199171+430 34 81
39、 44 Conventional bales 2 857 249211+350 28 98 54 Conventional bales 3 448 297253+290 23 116 64 Big bales 6 667 579494+150 12 218 120 Big bales 7 692 641549+130 10 250 137 8 Sampling 8.1 Number of spools in a laboratory sample Each 50 t or part thereof in a consignment of twine of the same code numbe
40、r shall represent a batch for testing using the following sampling formula: 025S, N= where S is the number of spools sampled, rounded to the nearest integer; N is the number of spools in a batch of 50 t or less. 8.2 Selection of sample For each batch, the laboratory sample shall be made up as follow
41、s. Select at random the required number of spools, each one taken from the different bales of the batch. EN ISO 4167:200659 Test method 9.1 Determination of linear density and runnage 9.1.1 Principle Specimens of specified length are weighed under specific conditions and then the linear density and
42、the runnage (or length in metres per kilogram) are calculated. 9.1.2 Apparatus 9.1.2.1 Balance, accurate to 0,5 g. 9.1.2.2 Wrap-reel of known perimeter. 9.1.3 Specimens 9.1.3.1 Selection Select 30 m of twine from each spool, in the following manner. Directly from the centre of each spool, in an anti
43、-clockwise direction, draw the first 10 m of twine and discard it. Draw 30 m of twine and wind it as adjacent turns (without overlapping) on the wrap-reel, exercising just sufficient tension on the twine to maintain straightness. Each specimen of 30 m constitutes a test piece. 9.1.3.2 Conditioning T
44、he tests shall be carried out in an ambient atmosphere, provided that the twine has been kept in conditions which do not damage its original properties. In the case of dispute, leave the specimens for 24 h in the standard temperature atmosphere for testing as specified in ISO 139 temperature (20 2)
45、C, relative humidity (65 2) %, before continuing with the tests. 9.1.4 Procedure Weigh each specimen to the nearest 0,5 g. Let m1be the mass obtained, in grams. 9.1.5 Expression of results 9.1.5.1 Calculation of linear density For each specimen, calculate the linear density, l, in tex rounded to the
46、 nearest integer, using the following formula: 1100030lm = where m1is the mass of the specimen in grams. EN ISO 4167:20066 9.1.5.2 Calculation of runnage Calculate the runnage, L, in metres per kilogram rounded to the nearest integer of twine, using the following formula: 610lL= where lis the linear
47、 density in tex rounded to the nearest integer. 9.1.5.3 Check test If a specimen is outside the tolerance (see Clause 7 and Table 2), a check test shall be carried out on another spool. If the result of the check test is found to be within limits of the permitted tolerances, the result of the check
48、test shall be adopted for the value of the linear density. 9.2 Determination of breaking force 9.2.1 Principle The force (expressed in decanewtons) required to break a specimen of specified length is measured under known conditions. 9.2.2 Apparatus Tensile testing machine having a constant rate of t
49、raverse with a mobile grip. This testing machine shall comprise: two devices for gripping the ends of the test piece; a device for maintaining the rate of traverse constant; a device for indicating or recording continuously the force applied. 9.2.3 Specimens After determining the runnage, draw directly from the centre of each spool in an anti-clockwise direction, and without cutting the twine, 10 specimens spaced 5 m from each other and of sufficient length so that once they are mounted in the testing machine, the
