1、BRITISH STANDARD BS EN 770:1994 Sacks for the transport of food aid Papersacks The European Standard EN 770:1994 has the status of a British Standard UDC 621.798.151-035.44:663/664:620.1BSEN 770:1994 This British Standard, having been prepared under the directionof the Packaging andFreight Container
2、s StandardsPolicy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15 October 1994 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference PKM/11 Draft for comment 92/42249 DC ISBN 0 580 22792 8 Cooperating organizati
3、ons 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 normalisation Denmark Dansk Standard Finl
4、and 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 Italy Ente Nazionale Italiano di U
5、nificazione 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 Standardiseringskommissionen i Sverige Switzerland Asso
6、ciation suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN 770:1994 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN 770 3 National annex NA (informativ
7、e) Committees responsible 6 National annex NB (informative) Cross-references Inside back coverBSEN 770:1994 ii BSI 11-1999 National foreword This British Standard has been prepared under the direction of the Packaging and Freight Containers Standards Policy Committee and is the English language vers
8、ion of EN 770:1994 Sacks for the transport of food aid Paper sacks, 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 British Standards are responsible for their correct application. Comp
9、liance 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 ii, theEN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyrigh
10、t 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 EN 770 May 1994 UDC 621.798.151-035.44:663/64:620.1 Descriptors: Packing, bags, paper packaging, capacity, characteristics, test
11、s English version Sacks for the transport of food aid Paper sacks Sacs pour le transport de laide alimentaire Sacs faits en papier Scke fr den Transport von Lebensmitteln frdie Nahrungsmittelhilfe Papierscke This European Standard was approved by CEN on 1994-05-12. CEN members are bound to comply wi
12、th 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 Secretar
13、iat 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
14、 versions. 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 Norm
15、alisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 770:1994 EEN770:1994 BSI 11-1999 2 Foreword This European Standard was drawn up by CEN Technical Committee CEN/TC 120, Sacks for the transport of food
16、aid, 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 ofa nationa
17、l standard, either by publication of an identical text or by endorsement, at the latest by November 1994, and conflicting national standards shall be withdrawn at the latest by November 1994. In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this
18、 European 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
19、5 Test methods and test requirements 3 6 Marking 4 7 Test report 4EN 770:1994 BSI 11-1999 3 1 Scope This European Standard specifies the general characteristics, requirements and methods of test ofpaper sacks. This European Standard is applicable to paper sacks, having a filling mass up to 50kg, int
20、ended forthe transport of food aid. 2 Normative references This European Standard incorporates by dated or 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
21、 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 edition of the publication referred to applies. EN 765:1994, Sacks for the transport of food aid Sacks made o
22、f woven polyolefin fabric other than polypropylene only. prEN 1086:1993, 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. EN 22206:1992, Packaging Complete, filled transport packages Identification of parts wh
23、en testing. (ISO 2206:1987) EN 22233:1992, Packaging Complete, filled transport packages Conditioning for testing. (ISO2233:1986) EN 26590-1:1992, Packaging Sacks Vocabulary and types Part 1: Paper sacks. (ISO6590-1:1983) EN 26591-1:1992, Packaging Sacks Description and method of measurement Part1:E
24、mpty paper sacks. (ISO 6591-1:1984) EN 27023:1992, Packaging Sacks Method of sampling empty sacks for testing. (ISO 7023:1983) EN 27965-1:1984, Packaging Sacks Drop test Part 1: Paper sacks. (ISO 7965-1:1984) ISO 1924-2:1985, Paper and board Determination of tensile properties Part 2: Constant rate
25、of elongation method. ISO 3676:1983, Packaging Unit load sizes Dimensions. 3 Definitions For the purpose of this standard, the definitions of EN 26590-1 apply. NOTEHereafter where the word “sack” is used in the text of this European Standard, a paper sack is to be understood. 4 General characteristi
26、cs 4.1 Construction 4.1.1 The sack shall be made of sackpaper. 4.1.2 The sack shall be made of one ply or more plies and may be equipped with a liner in accordance with prEN 1086. 4.1.3 All types of EN 26590-1 may be used. 4.1.4 The closure of the filled sack shall be designed to prevent leakage of
27、the product during transport. 4.1.5 Materials other than natural materials used in the manufacture and closure of the sack (inner liner excluded) shall have a UV-resistance in accordance with 5.7.3 of EN 765:1994. These materials can be tested in the construction in which they are used in the sack.
28、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 ISO 3676. 4.2.2 The dimensional tolerances of the sack should be agreed upon between the purchaser
29、and the supplier. 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 dimensional designation of the sack shall be in accordance with EN 26591-1. 4.3 Food
30、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 EN 27023. NOTETable 1 of EN 27023:1992 refers to th
31、e selection of units. Table 2 of EN 27023:1992 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 EN 27023. If, as a resu
32、lt 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.EN 770:1994 4 BSI 11-1999 If, for any other reason, resampling i
33、s necessary, the procedure followed shall follow the specifications of EN 27023 as closely as possible. 5.2 Conditioning 5.2.1 Before testing all samples shall be conditioned in accordance with EN 22233:1992 condition G (temperature + 23 C 2 C, relative humidity 50 % 5 %). 5.2.2 The period of condit
34、ioning of the samples shall be not less than 8 h. 5.2.3 The various tests as described shall be carried out in the same atmospheric conditions as used for conditioning, see 5.2.1, or, if not possible, the tests, shall commence within 10 min after removing the samples from the conditioning atmosphere
35、. 5.3 Surface identification If necessary the identification of the various surfaces of the filled sacks when testing shall be as given in EN 22206. 5.4 Date of completion of the tests All tests shall be completed within four weeks after the date the empty sacks are ready for dispatch by the supplie
36、r. 5.5 Determination of the quality of sackpaper The quality of the paper is expressed in the Tensile Energy Absorption (TEA) which is to be calculated with the formula: TEA Average= (TEA MD* TEA CD ) “ where TEA MDis the TEA in machine direction TEA CDis the TEA in cross direction TEA MDand TEA CDa
37、re measured and calculated in accordance with ISO 1924-2 where the measurement shall be made electronically. 5.6 Drop test 5.6.1 Test method The drop test shall be carried out in accordance with EN 27965-1 using the constant drop height method. 5.6.2 Filling of the sacks The sacks shall be filled wi
38、th the intended commodity or, if this is not possible, with similar 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 pr
39、ocedure 5.6.3.1 Drop test sequence The drop test shall be carried out on three sacks and shall comprise the following sequence: 1) butt dropping; 2) flat dropping. 5.6.3.2 Butt dropping The sack shall be dropped from a height of 1,20 m on the bottom of the sack. 5.6.3.3 Flat dropping The sack shall
40、be dropped from a height of 1,60 m, twice on one flat face and twice 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. A slight discharge e.g. from closures or stitch holes, upon impact shall not be considered a failure
41、 of the sack provided that no further leakage occurs after the sack has been raised clear of the ground. 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 t
42、his 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) the sum of the TEA AVERAGEvalues of all paper plies; e) description of the sacks in accord
43、ance with4.2.4 of this European Standard; f) description of the filling material used for testing; g) intended nett mass in kg; h) results of and comments on the drop test; i) any deviations from the test methods given in this European Standard; j) name and address of the tester; k) signature of the
44、 tester; l) date of the test.5 blankBSEN 770:1994 BSI 11-1999 6 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Packaging and Freight Containers Standards Policy Committee (PKM/-) to Technical C
45、ommittee PKM/11, upon which the following bodies were represented: Aluminium Federation Association of the British Pharmaceutical Industry British Aerosol Manufacturers Association British Paper and Board Industry Federation Chartered Institute of Purchasing and Supply Coated Paper and Board Makers
46、Association Department of Health Department of Trade and Industry (Laboratory of the Government Chemist) Environmental and Technical Association for the Paper Sack Industry Flexible Packaging Association Food and Drink Federation Institute of Wastes Management Packaging and Industrial Films Associat
47、ion Pira International Sterilization Packaging Materials Association The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Cement Association British Polyolefin Textiles Association Chemical Industries Association Jute Sack and Bag Manu
48、facturers Association Paper Sack Development Association Ltd. Potato Marketing Board United Kingdom Jute Goods Association United Kingdom Sugar Industry AssociationBSEN 770:1994 BSI 11-1999 National annex NB (informative) Cross-references It is envisaged that when prEN 1086 is published as a Europea
49、n Standard it will be implemented as BSEN1086. Publication referred to Corresponding British Standard EN 765:1994 BS EN 765:1994 Sacks for the transport of food aid Sacks made of woven polyolefin fabric other than polypropylene only EN 22206:1992 BS EN 22206:1993 Complete, filled transport packages Method for identifying parts when testing EN 22233:1992 BS EN 22233:1993 Complete, filled transport packages. Method of conditioning for testing BS EN 26590 Packaging Sacks Vocabulary and type
