1、BRITISH STANDARD BS EN 277:1996 Sacks for the transport of food aid Sacks made of woven polypropylene fabric The European Standard EN 277:1995 has the status of a British Standard ICS 55.080 UDC 621.798.151-036.742.3:663/664:620.1BSEN 277:1996 This British Standard, having been prepared under the di
2、rectionof the Consumer Products and Services Sector Board, was published under theauthority of the Standards Board and comes into effect on 15 February 1996 BSI 10-1999 First published as BS 7303-1 July1990 Second edition February 1996 The following BSI references relate to the work on this standard
3、: Committee reference PKM/11 Draft for comment 93/303271 DC ISBN 0 580 25100 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PKM/11, Packaging made from flexible materials, upon which the following bodies were represent
4、ed: Aluminium Federation Association of the British Pharamaceutical Industry British Aerosol Manufacturers Association British Paper and Board Industry Federation Chartered Institute of Purchasing and Supply Coated Paper and Board Makers Association Department of Health Department of Trade and Indus
5、try (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 Assoc
6、iation 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 Manufacturers Association Paper Sack Development Association Ltd.
7、Potato Marketing Board United Kingdom Jute Goods Association United Kingdom Sugar Industry Association Amendments issued since publication Amd. No. Date CommentsBSEN 277:1996 BSI 10-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 277 3 List o
8、f references Inside back coverBSEN 277:1996 ii BSI 10-1999 National foreword This British Standard has been prepared by Technical Committee PKM/11 and is the English language verison of EN277:1995 Sacks for the transport of food aid Sacks made of woven polypropylene fabric, published by the European
9、 Committee for Standardization (CEN). It supersedes BS7303-1:1990, which is withdrawn. 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. Compliance with a British Standard does not of i
10、tself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard EN 1086:1995 BS EN 1086:1996 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
11、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 types EN 26590-1:1992 Part 1:1993 Paper sacks EN 26590-2:199
12、2 Part 2:1993 Sacks made from thermoplastic flexible film EN 26591:1992 BS EN 26591 Packaging Sacks Description and method of measurement Part 2:1993 Empty sacks made from thermoplastic flexible film EN 27023:1992 BS EN 27023:1993 Packaging Sacks Method of sampling empty sacks for testing EN 27965-1
13、:1992 BS EN 27965 Packaging Sacks Drop test Part 1:1993 Paper sacks 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 copyright date) and may have h
14、ad amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 277 April 1995 ICS 55.080 Supersedes EN 277:1989 Descriptors: Plastic packaging, bags, sackcloth, polypropylene, capacity, food products, character
15、istics, drop tests, radiation resistance, ultraviolet radiation, sampling, climatic conditions English version Sacks for the transport of food aid Sacks made of woven polypropylene fabric Sacs pour le transport de laide alimentaire Sacs faits de polypropylne tiss Scke fr den Transport von Lebensmitt
16、eln fr die Nahrungsmittelhilfe Scke aus Polypropylengeweben This European Standard was approved by CEN on 1994-12-14. 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 a
17、ny 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, French, German). A version in any other language made b
18、y 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, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Lu
19、xembourg, 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 1996 All rights of reproduction and communication
20、in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN 277:1995 EEN 277:1995 BSI 10-1999 2 Foreword This European Standard has been prepared by CEN Technical Committee CEN/TC120, Sacks for the transport of food aid, of which the secretariat is held by NNI. This st
21、andard is one in a series of standards on sacks for the transport of food aid which are drawn up following a request from CEC. This standard supersedes EN277:1989. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, a
22、t the latest by October1995, and conflicting national standards shall be withdrawn at the latest by October1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Icel
23、and, 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 3.1 Sack made of woven polypropylene fabric 3 3.2 Ply 3 3.3 Gusset 3 4 General characteristics 3 4.1 Construction
24、 3 4.2 Dimensions 4 4.3 Food compatibility 4 5 Test methods and test requirements 4 5.1 Sampling 4 5.2 Conditioning 4 5.3 Surface identification 4 5.4 Date of completion of the tests 4 5.5 Determination of the breaking strength 4 5.6 Drop test 4 5.6.1 Test method 4 5.6.2 Filling of the sacks 4 5.6.3
25、 Test procedure 4 5.6.4 Criteria for passing the drop test 5 5.7 UV-resistance test 5 5.7.1 Test method 5 5.7.2 Test procedure 5 5.7.3 Criteria for passing the UV-resistance test 5 6 Marking 5 7 Test report 5EN 277:1995 BSI 10-1999 3 1 Scope This European Standard specifies the general characteristi
26、cs, requirements and methods of test for sacks made of woven polypropylene fabric. This European Standard is applicable to sacks made of woven polypropylene fabric, having a filling mass up to50kg, intended for the transport of food aid. 2 Normative references This European Standard incorporates by
27、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 revisions of any of these publications apply to this European Stand
28、ard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 1086:1995, 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 2
29、2206:1992, Packaging Complete, filled transport packages Identification of parts when 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. (ISO6590-1:1
30、983) EN 26590-2:1992, Packaging Sacks Vocabulary and types Part 2: Sacks made from thermoplastic flexible film. (ISO 6590-2:1986) EN 26591-2:1992, Packaging Sacks Description and method of measurement Part 2: Empty sacks made from thermoplastic flexible film. (ISO 6591-2:1985) EN 27023:1992, Packagi
31、ng Sacks Method of sampling empty sacks for testing. (ISO 7023:1983) EN 27965-1:1992, Packaging Sacks Drop test Part 1: Paper sacks. (ISO 7965-1:1984) ISO 3676:1983, Packaging Unit load sizes Dimensions. ISO 5081:1977, Textiles Woven fabrics Determination of breaking strength and elongation (Strip m
32、ethod). ASTM G 53:1988, Standard practice for operating light and water exposure apparatus (fluorescent UV-condensation type) for exposure of non-metallic materials 1) . 3 Definitions For the purposes of this standard, the following definitions apply. NOTE 1Other terms used in the manufacture of sac
33、ks 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 woven polypropylene fabric. 3.1 sack made of woven polypropylene fabric a container made of woven polypropylene fabric, closed at least
34、 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 NOTE 2Hereafter where the word sack is used in the text of this European Standard, a sack made of woven polypropylene fabric is to be
35、 understood. 3.2 ply a tissue of woven polypropylene 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 polypropylene fabric. 4.1.2 The sack shall be made of one ply or mor
36、e plies and may be equipped with a liner in accordance with EN1086. 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
37、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. 1) Information regarding this document can be obtained from the th
38、ird country unit of the CEN national members.EN 277:1995 4 BSI 10-1999 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 inISO3676. 4.2.2 The dimension
39、al tolerances of the sack should be agreed upon between the purchaser 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 des
40、ignation of the sack shall be in accordance withEN26591-2. NOTEThough EN26591-2 is valid for sacks made of thermoplastic flexible film, it can be applied to sacks made of woven polypropylene fabric. However, for some forms of sack made of woven polypropylene fabric, EN26591-2 cannot be applied. A th
41、ird Part ofISO6591 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 into contact with foodstuffs shall meet the legal requirements of the CEN member states which are applicable to them. 5 Test metho
42、ds 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 to the selection of sacks out of each selected unit. 5.1.2 The sampling shall be done at the date the empty sa
43、cks are ready for dispatch by the supplier. 5.1.3 In case resampling is necessary, it shall be done in accordance with EN27023. 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
44、then, however, be made from the same units as before, unless agreed otherwise. If, for any other reason, resampling is necessary, the procedure followed shall follow the specifications of EN27023 as closely as possible. 5.2 Conditioning 5.2.1 Before testing, all samples shall be conditioned in accor
45、dance with EN22233:1992, condition G (temperature +23 C 2 C, relative humidity50% 5%). 5.2.2 The period of conditioning of the samples shall 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
46、 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 the filled sacks when testing shall be as given in EN22206. 5.4 Date of completion of tests All tests sh
47、all 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 the material of the sack shall be carried out in accordance with ISO5081, using the conditioning requirem
48、ents of5.2 of this European Standard. The obtained value will constitute the reference from which the acceptability of the UV-resistance 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
49、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 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 fo
