1、BRITISH STANDARD BS EN 767:1994 Sacks for the transport of food aid Sacks made of woven jute/polyolefin fabric The European Standard EN767:1994 has the status of a BritishStandard UDC 621.798.151-037.6:663/664:620.1BSEN767:1994 This BritishStandard, having been prepared under the directionof the Pac
2、kaging and Freight Containers Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 September1994 BSI01-2000 The following BSI references relate to the work on this standard: Committee reference PKM/11 Draft for comment92/42246DC ISBN 0 580
3、22789 8 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisati
4、on Denmark Dansk Standard Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Ital
5、y Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissio
6、nen i Sverige Switzerland Association suisse de normalisation UnitedKingdom BritishStandards Institution Amendments issued since publication Amd. No. Date CommentsBSEN767:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN767 3 Nat
7、ional annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN767:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Packaging and Freight Containers Standards Policy Co
8、mmittee and is the English language version of EN767:1994 Sacks for the transport of food aid Sacks made of woven jute/polyolefin fabric, published by the European Committee for Standardization (CEN). A British Standard does not purport to include all the necessary provisions of a contract. Users of
9、 British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to6, an inside back co
10、ver and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN767 May1994 UDC 621.798.151-037.6:663/664:620.1 Descriptors:
11、 Packing, bags, textile packaging, sackcloth, jute, plastic packaging, polyolefins, food products, capacity, characteristics, tests English version Sacks for the transport of food aid Sacks made of wovenjute/polyolefin fabric Sacs pour le transport de laide alimentaire Sacs faits en toile de jute/po
12、lyolfine tisse Scke fr den Transport von Lebensmitteln frdie Nahrungsmittelhilfe Scke aus Jute/Polyolefin Mischgewebe This European Standard was approved by CEN on1994-05-12. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro
13、pean 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 the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English
14、, 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finl
15、and, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Bru
16、ssels 1994 Copyright reserved to CEN members Ref. No. EN767:1994 EEN767:1994 BSI 01-2000 2 Foreword This European Standard was drawn up by CEN Technical Committee CEN/TC120, Sacks for the transport of food aid, the secretariat of which is held by NNI. This European Standard has been prepared under a
17、 mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). 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 No
18、vember1994, and conflicting national standards shall be withdrawn at the latest by November1994. In accordance with CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland,
19、Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 General characteristics 3 5 Test methods and test requirements 4 6 Marking 5 7 Test report 5EN767:1994 BSI 01-2000 3 1 Scope T
20、his European Standard specifies the general characteristics, requirements and methods of test for sacks made of woven jute/polyolefin fabric. This European Standard is applicable to sacks made of woven jute/polyolefin fabric, having a filling mass up to50kg, intended for the transport of food aid. 2
21、 Normative references This European Standard incorporates by dated and undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references subsequent amendments to, or revisi
22、ons of, any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. prEN1086:1993, Sacks for the transport of food aid Recommendations on the selection of type of sa
23、ck and the liner in relation to the product to be packed. EN22206:1992, Packaging Complete, filled transport packages Identification of parts when testing. (ISO2206:1987) EN22233:1992, Packaging Complete, filled transport packages Conditioning for testing. (ISO2233:1986) EN26590-1:1992, Packaging Sa
24、cks Vocabulary and types Part1: Paper sacks. (ISO6590-1:1983) EN26590-2:1992, Packaging Sacks Vocabulary and types Part2: Sacks made from thermoplastic flexible film. (ISO6590-2:1986) EN26591-2:1992, Packaging Sacks Description and method of measurement. Part2:Empty sacks made from thermoplastic fle
25、xible film. (ISO6591-2:1985) EN27023:1992, Packaging Sacks Method of sampling empty sacks for testing. (ISO7023:1983) EN27965-1:1992, Packaging Sacks Drop test. Part1: Paper sacks. (ISO7965-1:1984) ISO3676:1983, Packaging Unit load sizes Dimensions. ISO5081:1977, Textiles Woven fabrics Determination
26、 of breaking strength and elongation (Strip method). ASTM G53-88, Standard practice for operating light and water exposure apparatus (fluorescent UV-condensation type) for exposure of non-metallic materials. 3 Definitions For the purpose of this standard, the following definitions apply: NOTEOther t
27、erms used in the manufacture of sacks are defined in EN26590-1 for paper sacks and in EN26590-2 for sacks made of thermoplastic flexible film. Most of these terms can also be applied to sacks made of jute/polyolefin fabric. 3.1 woven jute/polyolefin sack a container made of woven jute/polyolefin fab
28、ric, closed at least at one end, possibly in combination with other flexible materials used for the liner, to provide the properties required for filling and the goods distribution chain NOTEHereafter where the word “sack” is used in the text of this European Standard, a sack made of jute/polyolefin
29、 fabric is to be understood. 3.2 ply a tissue of woven jute/polyolefin fabric, forming the walls of a sack 3.3 gusset a fold inserted in the longitudinal edge of a sack 4 General characteristics 4.1 Construction 4.1.1 The sack shall be made of woven jute/polyolefin fabric. The jute yarns shall be in
30、 the weft direction, the polyolefin yarns shall be in the warp direction. 4.1.2 The sack shall be made of one ply or more plies and may be equipped with a liner in accordance with prEN1086. 4.1.3 The sack may be flat or gusseted. 4.1.4 The empty sack, laid flat, shall have a rectangular shape. 4.1.5
31、 The closure of the filled sack shall be designed to prevent leakage of the product during transport. 4.1.6 Materials other than natural materials used in the manufacture and closure of the sack (inner liner excluded) shall have a UV-resistance in accordance with5.7.3. These materials can be tested
32、in the construction in which they are used in the sack. 4.2 Dimensions 4.2.1 The dimensions of the empty sack shall be chosen so that, if necessary, after filling the dimensions of the filled sack comply with the dimensions of the unit load as specified in ISO3676. 4.2.2 The dimensional tolerances o
33、f the sack should be agreed upon between the purchaser and the supplier.EN767:1994 4 BSI 01-2000 4.2.3 The dimensions and the dimensional tolerances of the sack shall be recorded in the ordering documents. 4.2.4 The description of the dimensions, the method of measuring the dimensions and the dimens
34、ional designation of the sack shall be in accordance with EN26591-2. NOTEThough EN26591-2 is valid for sacks made of thermoplastic flexible film it can be applied to sacks made of jute/polyolefin fabric. However for some forms of sacks made of jute/polyolefin fabric EN26591-2 cannot be applied. A th
35、ird part of ISO6591 will be prepared by ISO/TC122/SC2, Packaging sacks. This third part will deal with sacks made of woven fabric. 4.3 Food compatibility Sacks which come in contact with foodstuffs shall meet the legal requirements of the CEN member states which are applicable to them. NOTESpecial a
36、ttention should be paid when mineral batching oils have been used for the production of the jute. 5 Test methods and test requirements 5.1 Sampling 5.1.1 The sampling shall be done in accordance with EN27023. NOTETable1 of EN27023:1992 refers to the selection of units. Table2 of EN27023:1992 refers
37、to the selection of sacks out of each selected unit. 5.1.2 The sampling shall be done on the date the empty sacks are ready for dispatch by the supplier. 5.1.3 If resampling is necessary it shall be done in accordance with EN27023. If, as a result of an accident during sampling or testing, resamplin
38、g is necessary, a new sample shall be taken following the procedure specified in EN27023. Selection may then, however, be made from the same units as before unless agreed otherwise. If, for any other reason, resampling is necessary, the procedure agreed shall follow the specification of EN27023 as c
39、losely as possible. 5.2 Conditioning 5.2.1 Before testing all samples shall be conditioned in accordance with EN22233:1992 condition G (temperature+23 C 2 C, relative humidity50% 5%). 5.2.2 The minimum period of conditioning of the samples shall be not less than8h. 5.2.3 The various tests as describ
40、ed shall be carried out in the same atmospheric conditions as used for conditioning, see5.2.1, or, if not possible, the tests shall commence within10min after removing the samples from the conditioning atmosphere. 5.3 Surface identification If necessary the identification of the various surfaces of
41、the filled sacks when testing shall be as given in EN22206. 5.4 Date of completion of tests All tests shall be completed within four weeks after the date the empty sacks are ready for dispatch by the supplier. 5.5 Determination of the breaking strength The determination of the breaking strength of t
42、he material of the sack shall be carried out in accordance with ISO5081 using the conditioning requirements of5.2 of this European Standard. The obtained value constitutes the reference from which the acceptability of the UV-resistance test as defined in5.7 is determined. 5.6 Drop test 5.6.1 Test me
43、thod The drop test shall be carried out in accordance with EN27965-1 using the constant drop height method. 5.6.2 Filling of the sacks The sacks shall be filled with the intended commodity or, if this is not possible, with similar material, taking into account type and size of granules etc., to give
44、 the same degree of filling. The mass of the filling material shall be within 0,2% of that of the nominal mass of the intended contents of the sack. 5.6.3 Test procedure 5.6.3.1 Drop test sequence The drop test shall be carried out on three sacks and shall comprise the following sequence: a) butt dr
45、opping; b) flat dropping. 5.6.3.2 Butt dropping The sack shall be dropped from a height of1,20m on the bottom of the sack. 5.6.3.3 Flat dropping The sack shall be dropped from a height of1,60m, twice on its flat face and twice on its opposite flat face. 5.6.4 Criteria for passing the drop test After
46、 each drop there shall be no rupture or loss of contents. A slight discharge e.g.from closures or stitch holes, upon impact shall not be considered a failure of the sack provided that no further leakage occurs after the sack has been raised clear of the ground.EN767:1994 BSI 01-2000 5 5.7 UV-resista
47、nce test 5.7.1 Test method The determination of the influence of UV-radiation and weathering on the breaking strength of the jute/polyolefin fabric shall be carried out in accordance with ASTM G53-88. 5.7.2 Test procedure The test shall be carried out with fluorescent UV-lamp type B. The duration of
48、 the test shall be144h (i.e.6days). The test cycle shall be:8 h at+60 C with UV-radiation alternating with4h at+50 C with condensation. 5.7.3 Criteria for passing the UV-resistance test After the test the breaking strength of the tested material shall be at least50% of the original breaking strength
49、. 6 Marking The marking of the sack with the suppliers identification is voluntary. 7 Test report The test report shall include a statement that all tests have been carried out in accordance with this European Standard and shall include at least the following information: a) name and address of the supplier; b) number of the contract or order reference; c) date, place and description of the sampling; d) description of the sacks in accordance with4.2.4 of this European Standard; e) description of the filling material used
