1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 13636:2012Plastics Film and sheeting Non-oriented poly(ethyleneterephthalate) (PET) sheetsBS ISO 13636:2012 BRITISH STANDARDNational forewordThis British Standard is the U
2、K implementation of ISO 13636:2012. The UK participation in its preparation was entrusted to T e c h n i c a l Committee PRI/75, Plastics and rubber film and sheets.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to
3、include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 69416 5 ICS 83.140.10 Compliance with a British Standard cannot confer immunity from legal obligations
4、.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 13636:2012 ISO 2012Plastics Film and sheeting Non-oriented poly(ethylene terephthalate) (PET) sheetsPlastiq
5、ues Film et feuille Films en poly(thylne trphtalate) (PET) non-orientsINTERNATIONAL STANDARDISO13636First edition2012-10-01Reference numberISO 13636:2012(E)BS ISO 13636:2012ISO 13636:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise spec
6、ified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCas
7、e postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 13636:2012ISO 13636:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions .
8、 14 Material 15 Classification of sheet 25.1 General . 25.2 Classification by sheet layer 25.3 Classification by food contact . 25.4 Classification by intrinsic viscosity of the sheet 36 Requirements 36.1 Appearance 36.2 Properties 37 Dimensions . 47.1 Length and tolerance . 47.2 Width and tolerance
9、 . 47.3 Thickness and tolerance . 48 Test method . 58.1 General conditions of test 58.2 Measurement of dimensions . 58.3 Intrinsic viscosity 58.4 Tensile stress at yield 58.5 Heat shrinkage 68.6 Oxygen transmission rate 68.7 Haze 68.8 Food hygiene tests 69 Package . 610 Marking 6Bibliography 8BS ISO
10、 13636:2012ISO 13636:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested
11、 in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Comm
12、ission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical
13、 committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall
14、not be held responsible for identifying any or all such patent rights.ISO 13636 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products.iv ISO 2012 All rights reservedBS ISO 13636:2012ISO 13636:2012(E)IntroductionOriented and non-oriented films and sheets are both made
15、from polyethylene terephthalate (PET). ISO 15988:20032covers only oriented PET films and sheets which have crystalline structure. Non-oriented PET (APET) films and sheets show quite different properties because of their non-crystalline structure and require a separate International Standard.This Int
16、ernational Standard is based on JIS Z 1716:2004,4in which, however, only virgin PET resin is allowed to be used as the raw material.Additional features of this International Standard are:a) recycled PET resin can also be used under controlled specified conditions;b) the structure and classification
17、of film and sheet, such as single, double or triple layer, are specified in conjunction with applications;c) applications for food packaging are described in conjunction with food and sanitary laws or regulations of each country or region. ISO 2012 All rights reserved vBS ISO 13636:2012BS ISO 13636:
18、2012Plastics Film and sheeting Non-oriented poly(ethylene terephthalate) (PET) sheets1 ScopeThis International Standard specifies the requirements and test methods for non-oriented polyethylene terephthalate (PET) or copolymer sheets made from virgin PET resin or recycled PET resin or combinations t
19、hereof. It applies only to sheets of thickness less than 2,0 mm. It excludes foamed sheets and shrinkable films.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the ed
20、ition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 291, Plastics Standard atmospheres for conditioning and testingISO 472, Plastics VocabularyISO 527-1, Plastics Determination of tensile properties Part 1: General princip
21、lesISO 527-3, Plastics Determination of tensile properties Part 3: Test conditions for films and sheetsISO 1628-5, Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 5: Thermoplastic polyester (TP) homopolymers and copolymersISO 2818, Plastics Pre
22、paration of test specimens by machiningISO 7792-1, Plastics Thermoplastic polyester (TP) moulding and extrusion materials Part 1: Designation system and basis for specificationsISO 11501, Plastics Film and sheeting Determination of dimensional change on heatingISO 12418-1:2012, Plastics Post-consume
23、r poly(ethylene terephthalate) (PET) bottle recyclates Part 1: Designation system and basis for specificationsISO 14782, Plastics Determination of haze for transparent materialsISO 15105-1, Plastics Film and sheeting Determination of gas-transmission rate Part 1: Differential-pressure methodsISO 151
24、05-2, Plastics Film and sheeting Determination of gas-transmission rate Part 2: Equal-pressure methodISO 15270, Plastics Guidelines for the recovery and recycling of plastics waste3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 472 and ISO 15270 apply
25、.4 MaterialSheets shall be made of virgin polyethylene terephthalate (PET) or copolymer or combination thereof mainly polymerized from ethylene glycol and terephthalic acid as defined in ISO 7792-1. Sheets can also INTERNATIONAL STANDARD ISO 13636:2012(E) ISO 2012 All rights reserved 1BS ISO 13636:2
26、012ISO 13636:2012(E)be made of recycled PET defined in ISO 12418-1. PET materials can be classified in terms of food contact criteria as shown in Table 1.Table 1 Classification of PET material in terms of food contact criteriaaCode Description Condition for useV PET virgin material Acceptable for di
27、rect food contact aMRPFDPET recyclates for direct food contact (FD) made by the process of general mechanical recycling plus additional treatment (MRP) as described in ISO 12418-1Acceptable for direct food contact aMRGFI orMRAFIPET recyclates for indirect food contact (FI) made by the process of gen
28、eral mechanical recycling (MRG) or mechanical recycling with alkaline treatment (MRA) as described in ISO 12418-1Acceptable for indirect food contact as an outside layer or as an encapsulated interior layer (e.g. middle layer of three layers) aMRGNF orMRANFPET recyclates for non-food (NF) applicatio
29、ns made by the process of general mechanical recycling (MRG) or mechanical recycling with alkaline treatment (MRA) as described in ISO 12418-1Unacceptable for any food contact appli-cationaFood packaging shall meet the legal requirements for direct and indirect food contact of the country or region
30、where it is to be used.NOTE Designation codes of materials are as defined in ISO 12418-1:2012, Tables 1 and 2.5 Classification of sheet5.1 GeneralSheets shall be classified according to the criteria in Tables 2, 3, and 4. Packaging for food contact applications is restricted in its usage according t
31、o classification. Such usage conditions shall meet the legislative or regulative requirements of the country or region where the sheet is to be used.5.2 Classification by sheet layerSheets are classified according to the composition of the layers given in Table 2.Table 2 Classification by sheet laye
32、rsComposition of layer(s) Sheet designationSingle layer ATwo layers composed of two different raw materials A/B (outside)Three layers composed of two different raw materials A/B (interior layer)/A5.3 Classification by food contactSheets are classified in terms of food contact criteria as given in Ta
33、ble 3 in combination with the classification of PET raw materials shown in Table 1.2 ISO 2012 All rights reservedBS ISO 13636:2012ISO 13636:2012(E)Table 3 Classification by food contactClass Composition of layer Condition for useSF1A and/or B layer(s) in Table 2 is made from V or MRPFD as defined in
34、 Table 1Acceptable for direct food contactaSF2A layer(s) in Table 2 is made from V or MRPFD as defined in Table 1andB layer in Table 2 is made from MRGFI or MRAFI as defined in Table 1Acceptable for direct food contactaonly to A layer(s) and indirect food contactato B(outside or interior) layerSNA a
35、nd/or B layers in Table 2 containing MRGNF or MRANF as defined in Table 1Unacceptable for any food contact appli-cationaFood packaging shall meet the legal requirements for direct and indirect food contact of the country or region where it is to be used.5.4 Classification by intrinsic viscosity of t
36、he sheetSheets are further classified into four groups given in Table 4, according to the intrinsic viscosity (IV) specified in 8.3. Intrinsic viscosity can be converted from the melt flow volume ratio (MVR) measured by ISO 12418-2.1Table 4 Classification according to intrinsic viscosity of the shee
37、tClassRange of intrinsic viscosity (IV) dl/gExamples of application1 0,60Packaging not requiring high mechanical strength2 0,60 to 0,70Packaging made by general thermoforming process3 0,70 to 0,80 Packaging for thick wall and deep drawing4 0,80 Heat-resistant container (CPET)6 Requirements6.1 Appear
38、anceSheet shall be visually free from defects, such as flaws, cracking, slackness, wrinkles, stains, foreign matter, irregular colour, surface irregularities, blocking, and/or any marks that impair its serviceability.6.2 PropertiesThe performance of sheets shall conform to the requirements given in
39、Table 5, when determined in accordance with Clause 8. ISO 2012 All rights reserved 3BS ISO 13636:2012ISO 13636:2012(E)Table 5 Basic properties of sheetsItem Unit Requirements Applicable subclauseTensile stress at yieldMachine directionaMPa 458.4Transverse directionbMPa 45Heat shrinkage percentage (m
40、achine directionb)% 3 8.5Oxygen transmission rate1016molm/m2sPa1 8.6Hazec% 10 8.7aMachine direction: direction parallel to extrusion or longitudinal direction.bTransverse direction: perpendicular to extrusion.cThis requirement concerns transparent sheets.7 Dimensions7.1 Length and toleranceThe lengt
41、h of sheets in flat form shall be agreed upon between the interested parties. Tolerance in length of sheets in flat form shall be limited to 020+mm. A more severe tolerance range can be adopted under the agreement between the interested parties.The rolling length and tolerance of the sheets in roll
42、form shall be agreed upon between the interested parties, although minus tolerance shall not be allowed.7.2 Width and toleranceThe width of the sheets shall be agreed upon between the interested parties. Tolerance in width of sheets shall be limited to 020+mm. A more severe tolerance range can be ad
43、opted by agreement between the interested parties.7.3 Thickness and toleranceThe thickness and tolerance of the sheets shall be in accordance with Table 6.Table 6 Thickness and toleranceDimensions in millimetresThicknessTolerance %0,2 200,2 to 0,5 150,5 104 ISO 2012 All rights reservedBS ISO 13636:2
44、012ISO 13636:2012(E)8 Test method8.1 General conditions of test8.1.1 Conditioning of test specimensTest specimens shall be conditioned prior to test in a standard atmosphere of (23 2) C, (50 10) % RH in accordance with ISO 291 for at least 48 h.8.1.2 Standard condition at test siteTests shall be con
45、ducted in a standard atmosphere of (23 2) C, (50 10) % RH in accordance with ISO 291.8.1.3 Sampling of test specimenRepresentative test specimens shall be cut both longitudinally and transversely, evenly distributed over the length and width of the sheet.8.1.4 Accuracy and report of test resultsThe
46、precision and reporting of test results shall be as specified in the relevant test methods.8.2 Measurement of dimensions8.2.1 Length and widthMeasure the length and width of the sheets to the nearest 1 mm, using a calibrated ruler or tape measure.For sheets in flat form, measure length and width at
47、two places in the machine direction and transverse direction, respectively, marking both ends in parallel with the periphery.For sheets in roll form, measure length and width at two places in the transverse direction, in parallel with the periphery.8.2.2 ThicknessMeasure the thickness to the nearest
48、 0,01 mm, using a calibrated thickness gauge.8.3 Intrinsic viscosityIntrinsic viscosity shall be determined according to the method specified in ISO 1628-5, using a mixture of phenol and 1,1,2,2-tetrachloroethane (3 + 2 parts by volume) as solvent. Intrinsic viscosity can be converted from MVR measu
49、red by ISO 12418-2.1A suitable quantity of material for three measurements shall be sampled from the middle part of the sheet in the transverse direction.The test results shall be reported in such a way that the average value of three tests is rounded to two decimal places.8.4 Tensile stress at yieldThe tensile stress at yield shall be determined according to ISO 527-1.The test speed shall be set at (50 5) mm/min as specified in ISO 5
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