1、BRITISH STANDARD BS EN 768:1994 Sacks for the transport of food aid Sacksmade of lined cotton fabric The European Standard EN 768:1994 has the status of a British Standard UDC 621.798.151-037.21:663/664:620.1BSEN 768:1994 This British Standard, having been prepared under the directionof the Packagin
2、g and Freight Containers Standards Policy Committee, was published under the authority of the Standards Board and comes intoeffect on 15 September 1994 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference PKM/11 Draft for comment 92/42247 DC ISBN 0 580 22
3、790 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 Institut belge de normalisation
4、 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 Italy
5、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 Standardiseringskommissione
6、n i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd No. Date CommentsBSEN768:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN 768 3 Nat
7、ional annex NA (informative) Committees responsible 6 National annex NB (informative) Cross-references Inside back coverBSEN 768:1994 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Packaging and Freight Containers Standards Policy Committee and is
8、 the English language version of EN 768:1994 Sacks for the transport of food aid Sacks made of lined cotton 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 British Standards are
9、 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 ii, theENtitle page, pages2 to 6, an inside back cover and a back cover
10、. 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 EN 768 May 1994 UDC 621.798.151-037.21:663/664:620.1 Descriptors: Packing, bags, t
11、extile packaging, sackcloth, cotton, food products, capacity, characteristics, tests English version Sacks for the transport of food aid Sacks made of lined cotton fabric Sacs pour le transport de laide alimentaire Sacs faits en toile de coton doubl Scke fr den Transport von Lebensmitteln frdie Nahr
12、ungsmittelhilfe Scke aus Baumwollgewebe mit Innensack This European Standard was approved by CEN on 1994-05-12. CEN members 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 alt
13、eration. 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, French, German). A version in any other language made by tran
14、slation 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, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembou
15、rg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 768:1
16、994 EEN768:1994 BSI 01-2000 2 Foreword This European Standard was drawn up by CEN Technical Committee CEN/TC 120, Sacks for the transport of food 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 Eur
17、opean 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 November 1994, and conflicting national standards shall be wit
18、hdrawn at the latest by November 1994. In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spai
19、n, Sweden, Switzerland and United Kingdom. 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 4 7 Test report 5EN768:1994 BSI 01-2000 3 1 Scope This European Standard specifies the general character
20、istics, requirements and methods of test for sacks made of lined cotton fabric. This European Standard is applicable to sacks made of lined cotton fabric, having a filling mass up to50kg, intended for the transport of food aid. 2 Normative references This European Standard incorporates by dated and
21、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 revisions of, any of these publications apply to this European Standard only w
22、hen 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 of woven polyolefin fabric other than polypropylene only. prEN 1086:1993, Sacks for the transport of food aid
23、 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 whentesting. (ISO 2206:1987) EN 22233:1992, Packaging Complete, filled transport packages Conditioning for tes
24、ting. (ISO2233:1986) EN 26590-1:1992, Packaging Sacks Vocabulary and types Part 1: Paper sacks. (ISO6590-1:1983) EN 26590-2:1992, Packaging Sacks Vocabulary and types Part 2: Sacks made fromthermoplastic flexible film. (ISO 6590-2:1986) EN 26591-2:1992, Packaging Sacks Description and method of meas
25、urement Part2:Empty sacks made from thermoplastic flexible film. (ISO 6591-2:1985) EN 27023:1992, Packaging Sacks Method ofsampling empty sacks for testing. (ISO 7023:1983) EN 27965-1:1992, Packaging Sacks Drop test Part 1: paper sacks. (ISO 7023:1983) ISO 3676:1983, Packaging Unit load sizes Dimens
26、ions. 3 Definitions For the purpose of this standard, the following definitions apply: NOTEOther terms used in the manufacture of sacks are defined in EN 26590-1 for paper sacks and in EN 26590-2 for sacks made of thermoplastic flexible film. Most of these terms can also be applied to sacks made of
27、lined cotton fabric. 3.1 lined cotton sack a container made of cotton fabric, closed at least at one end, 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 th
28、e text of this European Standard, a sack made of lined cotton fabric is to be understood. 3.2 ply a tissue of cotton fabric, forming the outside walls of the sack or another material forming the inside walls of the sack 3.3 gusset a fold inserted in the longitudinal edge of the sack 4 General charac
29、teristics 4.1 Construction 4.1.1 The sack shall be made of cotton fabric. 4.1.2 The sack shall be made of one ply or more plies and shall be equipped with a liner in accordance with prEN 1086. 4.1.3 The sack may be flat or gusseted. 4.1.4 The empty sack, laid flat, shall have a rectangular shape. 4.
30、1.5 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 with 5.7.3 of EN 765:1994. These mater
31、ials can be tested 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 ISO 3676. 4.2.2 The dime
32、nsional tolerances of the sack should be agreed upon between the purchaser and the supplier.EN768:1994 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 dimen
33、sions and the dimensional designation of the sack shall be in accordance with EN 26591-2. NOTEThough EN 26591-2 is valid for sacks made of thermoplastic flexible film it can be applied to sacks made of cotton fabric. However for some forms of sacks made of polyolefin fabric EN 26591-2 cannot be appl
34、ied. A third part of ISO 6591 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. 5 T
35、est 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 the 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 dat
36、e 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 result of an accident during sampling or testing, resampling is necessary, a new sample shall be taken following the procedure specified in EN27023. Selec
37、tion 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 closely as possible. 5.2 Conditioning 5.2.1 Before testing all samples shall be conditioned in a
38、ccordance 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 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.
39、2.1, or, if not possible, the tests shall commence within 10min after removing the samples from the conditioning atmosphere. 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 th
40、e tests All tests shall be completed within four weeks after the date the empty sacks are ready for dispatch by the supplier. 5.5 Drop test 5.5.1 Test method The drop test shall be carried out in accordance with EN 27965-1:1992 using the constant drop height method. 5.5.2 Filling of the sacks The sa
41、cks 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 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 t
42、he sack. 5.5.3 Test procedure 5.5.3.1 Drop test sequence The drop test shall be carried out on three sacks and shall comprise the following sequence: a) butt dropping; b) flat dropping. 5.5.3.2 Butt dropping The sack shall be dropped from a height of 1,20m on the bottom of the sack. 5.5.3.3 Flat dro
43、pping The sack shall be dropped from a height of 1,60 m, twice on one flat face and twice on the opposite flat face. 5.5.4 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 b
44、e considered a failure 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 supplier identification is voluntary.EN768:1994 BSI 01-2000 5 7 Test report The test report shall include a statement that all tes
45、ts 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.
46、2.4 of this European Standard; e) description of the filling material used for testing; f) intended net mass in kg; g) results of and comments on the drop test; h) any deviations from the test methods given in this European Standard; i) name and address of the tester; j) signature of the tester; k)
47、date of the test.BSEN 768:1994 6 BSI 01-2000 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 Committee PKM/11, up
48、on 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 Association Departm
49、ent 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 Association Pira International Sterilization Packaging Materials Association The following bodies were also represented in the drafting of the standard, through subcommittees andpanels: British Cement Association British Polyo
