1、BRITISH STANDARD BS ISO 15988:2003 Plastics Film and sheeting Biaxially oriented poly(ethylene terephthalate) (PET) films ICS 83.140.10 BS ISO 15988:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 27 May 2003 BSI 27 May 2003 ISBN 0 580 4
2、1936 3 National foreword This British Standard reproduces verbatim ISO 15988:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PRI/75, Plastics films and sheets, which has the responsibility to: A list of organizations re
3、presented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by u
4、sing the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity
5、 from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in
6、the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments is
7、sued since publication Amd. No. Date CommentsINTERNATIONAL STANDARD ISO 15988 First edition 2003-05-15 Reference number ISO 15988:2003(E) OSI 2003 Plastics Film and sheeting Biaxially oriented poly(ethylene terephthalate) (PET) films Plastiques Film et feuille Films en poly(thylne trphtalate) (PET)
8、bi-orientsBSISO15988:2003 ISO :88951(3002)E ii ISO 3002 All rithgs reresvde id FDPscalimer ThFDP si fam eliy ctnome niat deddebyepfa.sec In cacnadrociw eth sebodA sneciliycilop gn, thf siam elirp eb ytnide or viewb detu llahs ton tide ebed lnuet sst ehyfepcaa hcihw serdebme et desnecil era dedo tsni
9、 dnat no dellahpmoc eturep reformign ttide ehign. In odt gnidaolnwsih liferap ,tcca seitpe trehnie snopser ehtitiliby fo nto fnirA gnigniycilop gnisnecil sebod. Teh SItneC Olar Seerctraiat catpecs ibail ontily t nih.aera si Aebod t a sirramedak fo AsyS ebodtmeI snocrropta.de teDlias fo tfos ehtwcudo
10、rp erats t desutaerc ot esih FDP fb nac elif et ni dnuoG ehreneI lafnr oleative tt of eh;eli tP ehDF-rctaenoi temaraptpo erew sremizif deorp rinti.gn Evrey t neeb sah eracakt neo rusnee ttah tf ehtius si elibaf elosu re by ISO memdob rebsei. In eht kilnuyle evtne ttah a borplme rtaleit gno it si f,d
11、nuo esaelp ifnrom thtneC erla ceSrteraita ta teh sserdda vigoleb new. IOS 3002 Alr lithgs reresv.de sselnU toesiwreh sficep,dei rap ont fo thbup silitaciam nocudorper eb yde or tuilidez na nif yorm ro by nam ysnae, tcelerm ro cinocinahcela, tohp gnidulcnicopom dna gniyicrfomli, tiwuoht repsimsi noin
12、 wrtif gnirtie mohI reSO ta the asserdd ebwol or ISOmem sreb obyd t nitnuoc ehry fo teh euqertsre. SIc Oopyrigho tfifce saCsop etela 65 -HCG 1121eneva 02 T.le 22 14 + 10 947 11 Fxa + 22 14 0 94774 9 Eam-il ocpyrithgios.ogr Web wwwi.soo.rg BSISO15988:2003 ISO 89513002:8)E( ISO 3002 r llAithgs reservd
13、e iii Foreword ISO (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 in a subject for whi
14、ch 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 Commission (IEC) on all m
15、atters 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 committees are cir
16、culated 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 not be held respon
17、sible for identifying any or all such patent rights. ISO 15988 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products. BSISO15988:2003 blank BSISO15988:2003 ANRETNIITOTS LANDNADRA ISO 89513002:8)E( ISO 3002 r llAithgs reservde 1 Plastics Film and sheeting Biaxially ori
18、ented poly(ethylene terephthalate) (PET) films 1S c o p e This International Standard specifies biaxially oriented transparent polyethylene terephthalate (PET) films, mainly used for packaging. NOTE Biaxially oriented transparent PET films are used alone and/or as laminated film with other films. 2
19、Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 291:1997, Plastics Stand
20、ard atmospheres for conditioning and testing ISO 527-3:1995, Plastics Determination of tensile properties Part 3: Test conditions for films and sheets ISO 4593:1993, Plastics Film and sheeting Determination of thickness by mechanical scanning ISO 8296:1987, Plastics Film and sheeting Determination o
21、f wetting tension ISO 14782:1999, Plastics Determination of haze for transparent materials ISO 15105-1:2002, Plastics Film and sheeting Determination of gas-transmission rate Part1: Differential-pressure method ISO 15105-2:2003, Plastics Film and sheeting Determination of gas-transmission rate Part
22、2: Equal- pressure method ISO 15106-1:2003, Plastics Film and sheeting Determination of water vapour transmission rate Part 1: Humidity detection sensor method ISO 15106-2:2003, Plastics Film and sheeting Determination of water vapour transmission rate Part 2: Infrared detection sensor method ISO 15
23、106-3:2003, Plastics Film and sheeting Determination of water vapour transmission rate Part 3: Electrolytic detection sensor method 3 Classification Films are classified into two groups as follows. 1) Film treated with corona discharge. 2) Film not treated with corona discharge. BSISO15988:2003 ISO
24、:88951(3002)E 2 ISO 3002 All rithgs reresvde 4 Requirements 4.1 Appearance The films shall be visibly free of flaws, slackness, wrinkles, stains, foreign matter or any marks that impair its serviceability. The splicing of two films in a roll shall be prominently marked in order to provide a visible
25、indication from the side of the roll. The interested parties shall agree upon the method of marking the splice. NOTE One acceptable method of marking is the use of coloured adhesive tape. 4.2 Dimensions 4.2.1 General For any individual film selected at random from any delivery, the dimensions listed
26、 in 4.2.2 to 4.2.5, including their nominal values, shall be agreed upon among interested parties. 4.2.2 Width The tolerance of width of the films shall be within . An example of film width with corresponding tolerance is given in Table 1. 4.2.3 Length of film in a roll The tolerance of film length
27、in a roll shall be within of the nominal value. Examples of film length and corresponding tolerances in a roll are shown in Table 2. 4.2.4 Inside diameter of core of a roll The inside diameter tolerance of a core of a roll shall be within of the nominal value. Table 1 Example of a film width and its
28、 tolerance Width Tolerance of widthNOTE : integer, 0, 1, 2, ., in width steps of . Table 2 Examples of film length in a roll and their tolerances Length of film Tolerance of length of film Nominal length Length in a roll 400 0 4 600 0 6 800 0 8of nominal length +4 0 mm mm mm 500+ 40n +4 0 n 40 mm +1
29、 0 % mk mm +40 0 +60 0 +80 0 8 000 81 % +2 0 mm BSISO15988:2003 ISO 89513002:8)E( ISO 3002 r llAithgs reservde 3 Examples of inside diameter of core in a roll, and corresponding tolerance are given in Table 3. 4.2.5 Thickness The thickness tolerance shall be within of the nominal value. Examples of
30、thicknesses and corresponding tolerances are given in Table 4. 4.3 Physical properties Films shall meet the requirements of physical properties listed in Table 5. Table 3 Examples of inside diameter of a core in a roll and their tolerances Inside diameter of core Tolerance on inside diameter of core
31、 76 152 Table 4 Examples of thickness and their tolerances Thickness Tolerance Nominal thickness Thickness No. 12 12 16 16 25 25 Table 5 Properties of film Properties Unit Test method Requirements Testing in accordance with subclause Longitudinal a Transverse b Tensile strength at break ISO 527-3 5.
32、4 Tensile strain at break ISO 527-3 5.4 Dimensional change on heating 5.5 Coefficient of oxygen transmission c ISO 15105-1 or ISO 15105-2 5.6 Coefficient of water vapour transmission d ISO 15106-1, ISO 15106-2 or ISO 15106-3 5.7 Haze ISO 14782 5.8 Wetting tension e ISO 8296 5.9 a Longitudinal: direc
33、tion parallel to extrusion or “machine direction”. b Transverse: direction perpendicular to extrusion. c , relative humidity. d , relative humidity. e The wetting tension shall only apply to films treated with corona discharge mm mm +2 0 +2 0 10 % m m 1,2 1,6 2,5 MPa 150 150 % 200 200 % 3,0 3,0 fmol
34、 100 m/ m 2 s Pa 140 g/100 m/ m 2 24h 10 % 8,0 mN/m 40 23 C0% 40 C9 0% BSISO15988:2003 ISO :88951(3002)E 4 ISO 3002 All rithgs reresvde 4.4 Physiological behaviour For applications involving food contact, the film shall conform to all applicable regulatory requirements. 5 Test methods 5.1 Conditioni
35、ng and testing of specimens Testing of tensile properties, haze and wetting tension shall be carried out in a standard atmosphere of , in accordance with ISO 291, after conditioning the specimens for at least under the same conditions. Specimens for the testing of dimensional change on heating shall
36、 also be conditioned under these conditions. 5.2 Visual examination The appearance of the film shall be checked with the naked eye. 5.3 Dimensions 5.3.1 Width The width of film shall be measured using a calibrated metal rule. 5.3.2 Inside diameter of core of roll The Inside diameter of the core of a
37、 roll shall be measured using a vernier calliper. 5.3.3 Thickness The average thickness of films shall be measured to the nearest using a dial gauge or equivalent in accordance with ISO 4593. Five piles of films shall be used for thicknesses over and ten piles of films shall be used for film thickne
38、sses not more than The thickness of films shall be measured at ten equidistant points across the film width. The thickness shall be reported as the arithmetic average of these measurements. 5.4 Tensile strength and tensile strain at break Tensile strength and tensile strain at break shall be determi
39、ned by tensile testing at least five specimens in accordance with ISO 527-3. The specimen dimensions are shown in Figure 1. The test speed shall be . 5.5 Dimensional change on heating 5.5.1 Preparation of specimen Prepare 5 specimens, in width and approximately in length for both the longitudinal di
40、rection and the transverse direction. Mark off a gauge length centred in the specimen (each mark approximately from the end). (23 2) C (50 5) % 8h 1 m 16 m 16 m (200 20) mm/min 20 mm 150 mm 100 mm 25 mm BSISO15988:2003 ISO 89513002:8)E( ISO 3002 r llAithgs reservde 5 5.5.2 Procedure Suspend the spec
41、imens vertically in a circulating air oven which is kept at for . After removal from the oven, allow them to cool for to room temperature. Measure the length between marks. Calculate an arithmetic mean of 5 specimens using the following equation: where is the numerical value of the dimensional chang
42、e on heating, expressed as a percentage; is the numerical value of the length between marks before heating, expressed in millimetres; is the numerical value of the length between marks after heating, expressed in millimetres. 5.6 Coefficient of oxygen transmission The coefficient of oxygen transmiss
43、ion shall be determined in accordance with ISO 15105-1 or ISO 15105-2. The result is calculated by the following equation expressed per thickness: where is the numerical value of the coefficient of oxygen transmission, expressed in per square metre second pascal; Width: to Thickness: Gauge length: I
44、nitial distance between grips: Overall length: a Gauge marks Figure 1 Tensile test specimen b 10 mm 25 mm h 1mm L 0 50 mm 0,5 mm L 100 mm5mm l 3 150 mm (150 3) C 30 min 30 min S = L 1 L 2 L 1 100 S L 1 L 2 100 m P O 2 = O 2 GTR (d/0,1) P O 2 fmol 100 m BSISO15988:2003 ISO :88951(3002)E 6 ISO 3002 Al
45、l rithgs reresvde is the numerical value of the transmission rate of oxygen, expressed in fmol per square metre second pascal; is the numerical value of the thickness of specimen, expressed in millimetres. 5.7 Coefficient of water vapour transmission The coefficient of water vapour transmission shal
46、l be determined based on the transmission rate of water vapour in accordance with ISO 15106-1, ISO 15106-2 or ISO 15105-2. The result is calculated using the following equation expressed per thickness: where is the numerical value of the coefficient of water vapour transmission, expressed in grams p
47、erper square metre day; is the numerical value of the transmission rate of water vapour, expressed in grams per square metre day; is the numerical value of thickness of specimen, expressed in millimetres. 5.8 Haze Haze shall be determined in accordance with ISO 14782. 5.9 Wetting tension Wetting ten
48、sion shall be determined in accordance with ISO 8296. 6 Packaging Packaging and size of unit packaging shall be agreed upon between interested parties taking into account conditions of transportation and storage. 7 Marking 7.1 Marking on products If applicable, the surface of the film with corona di
49、scharge shall be clearly identified. 7.2 Marking on packaging The following shall be clearly marked on the package: a) name of products or symbol: PET; b) classification of film, whether treated with corona discharge or not; c) nominal thickness, width and length of a roll; d) year and month of manufac
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