1、BRITISH STANDARD BS EN 765:1994 Sacks for the transport of food aid Sacks made of woven polyolefin fabric other than polypropylene only The European Standard EN765:1994 has the status of a BritishStandard UDC 621.798.151-036.742:663/664:620.1BSEN765:1994 This British Standard, having been prepared u
2、nder the directionof the Packaging andFreight Containers StandardsPolicy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15September1994 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference PKM/11 Draft for commen
3、t 92/42244 DC ISBN 0 580 22787 1 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 Insti
4、tut belge de normalisation 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 A
5、uthority of Ireland Italy 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 S
6、tandardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN765:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Fore
7、word 2 Text of EN765 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN765:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Packaging and Freight Cont
8、ainers Standards Policy Committee and is the English language version of EN765:1994 Sacks for the transport of food aid Sacks made of woven polyolefin fabric other than polypropylene only, published by the European Committee for Standardization(CEN). A British Standard does not purport to include al
9、l the necessary provisions of a contract. Users of 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, pages i and
10、 ii, theEN title page, pages2 to6, an inside back cover 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 EN765 May1
11、994 UDC 621.798.151-036.742:663/664:620.1 Descriptors: Packing, bags, plastic packaging,polyolefins, food products, capacity, characteristics, tests English version Sacks for the transport of food aid Sacks made of woven polyolefin fabric other than polypropylene only Sacs pour le transport de laide
12、 alimentaire Sacs faits de polyolfine tiss autre que le polypropylne utilis seul Scke fr den Transport von Lebensmitteln fr die Nahrungsmittelhilfe Scke aus anderen Polyolefingeweben als nur aus Polypropylen This European Standard was approved by CEN on1994-05-12. CEN members are bound to comply wit
13、h 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 the Central Secretari
14、at 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 Central Secretariat has the same status as the official v
15、ersions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normal
16、isation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN765:1994 EEN765:1994 BSI 01-2000 2 Foreword This European Standard was drawn up by CEN Technical Committee CEN/TC120, Sacks for the transport of food aid,
17、 the secretariat of which is held by NNI. This European Standard has been prepared under a 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 s
18、tandard, either by publication of an identical text or by endorsement, at the latest by November1994, and conflicting national standards shall be withdrawn at the latest by November1994. In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this Euro
19、pean Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 General characteristics 3 5 Tes
20、t methods and test requirements 4 6 Marking 5 7 Test report 5EN765:1994 BSI 01-2000 3 1 Scope This European Standard specifies the general characteristics, requirements and methods of test for sacks made of woven polyolefin fabric other than polypropylene only. This European Standard is applicable t
21、o sacks made of woven polyolefin fabric other than polypropylene only, having a filling mass up to50kg, intended for the transport of food aid. 2 Normative references This European Standard incorporates by dated and undated reference, provisions from other publications. These normative references ar
22、e cited at the appropriate places in the text and the publications are listed hereafter. For dated references subsequent amendments to, or revisions of, any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest
23、edition of the publication referred to applies. prEN1086:1993, Sacks for the transport of food aid Recommendations on the selection of type of sack and the liner in relation to the product to be packed. EN22206:1992, Packaging Complete, filled transport packages Identification of parts when testing.
24、 (ISO2206:1987) EN22233:1992, Packaging Complete, filled transport packages Conditioning for testing. (ISO2233:1986) EN26590-1:1992, Packaging Sacks Vocabulary and types Part1: Paper sacks. (ISO6590-1:1983) EN26590-2:1992, Packaging Sacks Vocabulary and types. Part2: Sacks made from thermoplastic fl
25、exible film. (ISO6590-2:1986) EN26591-2:1992, Packaging Sacks Description and method of measurement Part2:Empty sacks made from thermoplastic flexible film. (ISO6591-2:1985) EN27023:1992, Packaging Sacks Method of sampling empty sacks for testing. (ISO7023:1983) EN27965-1:1992, Packaging Sacks Drop
26、test Part1: Paper sacks. (ISO7965-1:1984) ISO3676:1983, Packaging Unit load sizes Dimensions. ISO5081:1977, Textiles Woven fabrics Determination of breaking strength and elongation(Strip method). ASTM G53-88, Standard practice for operating light and water exposure apparatus(fluorescent UV-condensat
27、ion type) for exposure of non-metallic materials. 3 Definitions For the purpose of this standard, the following definitions apply: NOTEOther terms 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 t
28、erms can also be applied to sacks made of polyolefin fabric. 3.1 sacks made of woven polyolefin fabric other than polypropylene only a container made of woven polyolefin fabric other than polypropylene only, closed at least at one end, possibly in combination with other flexible materials used for t
29、he 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 woven polyolefin fabric other than polypropylene only is to be understood. 3.2 ply a tissue of polyolefin fabric
30、 other than polypropylene only, 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 polyolefin fabric other than polypropylene only. 4.1.2 The sack shall be made of one ply or more
31、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 The closure of the filled sack shall be designed to prevent leakage of the product during transport. 4.1.6 Materials othe
32、r 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 in the construction in which they are used in the sack.EN765:1994 4 BSI 01-2000 4.2 Dimensions 4.2.1 The dimensions of the
33、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 of the sack should be agreed upon between the purchaser and the supplier. 4.2.3 The dimensions and t
34、he 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 dimensional designation of the sack shall be in accordance with EN26591-2. NOTEThough EN26591-2 is valid for sacks made of thermo
35、plastic flexible film it can be applied to sacks made of woven polyolefin fabric. However for some forms of sacks made of woven polyolefin fabric EN26591-2 cannot be applied. A third part of ISO6591 will be prepared by ISO/TC122/SC2, Packaging sacks. This third part will deal with sacks made of wove
36、n 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. 5 Test methods and test requirements 5.1 Sampling 5.1.1 The sampling shall be done in accordance with EN27023. NOTETable1 of EN27023:1
37、992 refers to the selection of units. Table2 of EN27023:1992 refers 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.
38、If, as a result of an accident during sampling or testing, resampling 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,
39、 the procedure agreed shall follow the specifications of EN27023 as closely as possible. 5.2 Conditioning 5.2.1 Before testing all samples shall be conditioned in accordance with EN22233:1992 conditionG(temperature+23 C 2 C, relative humidity50% 5%). 5.2.2 The period of conditioning of the samples s
40、hall be not less than8h. 5.2.3 The various tests as described 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
41、If necessary the identification of the various surfaces of 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 breaki
42、ng strength The determination of the breaking strength of the material of the sacks shall be carried out in accordance with ISO5081 using the conditioning requirements of5.2 of this European Standard. The obtained value will constitute the reference from which the acceptability of the UV-resistance
43、test as defined in5.7 will be determined. 5.6 Drop test 5.6.1 Test method The drop test shall be carried out in accordance with EN27965-1:1992 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 sim
44、ilar material, taking into account type and size of granules etc., to give 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
45、 out on three sacks and shall comprise the following sequence: a) butt dropping; 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 one flat face and twice
46、on the opposite flat face. 5.6.4 Criteria for passing the drop test After each drop there shall be no rupture or loss of contents.EN765:1994 BSI 01-2000 5 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
47、occurs after the sack has been raised clear of the ground. 5.7 UV-resistance test 5.7.1 Test method The determination of the influence of UV-radiation and weathering on the breaking strength of polyolefin fabric shall be carried out in accordance with ASTM G53-88. 5.7.2 Test procedure The test shall
48、 be carried out with fluorescent UV-lamp type B. The duration of the test shall be144hours (i.e.6days). The test cycle shall be8h 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 test
49、ed material shall be at least50%of the original breaking strength. 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; of this European Standard; d) description, of the sacks
