1、BRITISH STANDARD BS ISO 17555:2003 Plastics Film and sheeting Biaxially oriented polypropylene (PP) films ICS 83.140.10 BS ISO 17555:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 24 September 2003 BSI 24 September 2003 ISBN 0 580 42659
2、 9 National foreword This British Standard reproduces verbatim ISO 17555:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PRI/75, Plastics and rubber film and sheets, which has the responsibility to: A list of organizati
3、ons represented 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”, o
4、r by using 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 im
5、munity 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 th
6、em in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued sin
7、ce publication Amd. No. Date CommentsINTERNATIONAL STANDARD ISO 17555 First edition 2003-09-15 Reference number ISO 17555:2003(E) Plastics Film and sheeting Biaxially oriented polypropylene (PP) films Plastiques Film et feuille Films en polypropylne (PP) bi-orientsBSISO17555:2003ISO :55571(3002)E ii
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13、g . 6 7 Marking . 6 BSISO17555:2003iv 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
14、 interested 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 Electrotec
15、hnical Commission (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
16、the technical 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 righ
17、ts. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17555 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products. It is based on Japanese Standard JIS Z 1712:1997. BSISO17555:2003 1 Plastics Film and sheeting Biaxially oriented poly
18、propylene (PP) films 1S c o p e This International Standard specifies the requirements for biaxially oriented polypropylene (PP) films, which are mainly used for packaging. The film may be used alone or in laminates with other films. This International Standard applies only to films composed of more
19、 than (by mass) of polypropylene. 2 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) a
20、pplies. ISO 291:1997, Plastics Standard 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, Plasti
21、cs Film and sheeting Determination of wetting tension ISO 14782:1999, Plastics Determination of haze for transparent materials 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 she
22、eting Determination of water vapour transmission rate Part 2: Infrared detection sensor method ISO 15106-3:2003, Plastics Film and sheeting Determination of water vapour transmission rate Part 3: Electrolytic detection sensor method 3 Classification Films are classified into two types as shown in Ta
23、ble 1. Table 1 Classification of films Type 1 Film subjected to corona discharge, flame or plasma treatment Type 2 Film not subjected to corona discharge, flame or plasma treatment 95 % BSISO17555:20032 4 Requirements 4.1 Appearance Films shall be visibly free of flaws, slackness, wrinkles, stains,
24、foreign matter or marks which could impair their serviceability. The splicing of two films in a roll should preferably be prominently marked to provide a visible indication when the roll is viewed from the end. The method of marking the splice should be agreed upon between the interested parties. NO
25、TE One acceptable method of doing this is to use coloured adhesive tape. 4.2 Dimensions 4.2.1 General For any individual film selected at random from any delivery, the following dimensions, including their nominal values, shall be as agreed upon between the interested parties. 4.2.2 Width The film w
26、idth shall lie between the nominal width and a value wider than the nominal width. Examples of possible widths are shown in Table 2. 4.2.3 Length of film in roll The length of film in a roll shall lie between the nominal length and a value longer than the nominal length. Examples of possible lengths
27、 are shown in Table 3. Table 2 Examples of nominal widths of films and associated tolerances Nominal width Tolerance on width NOTE is an integer, 0, 1, 2, , giving width steps of . Table 3 Examples of nominal lengths of film in a roll and associated tolerances Nominal length Length in roll Tolerance
28、 100 0 1 200 0 2 400 0 4 600 0 6 800 0 8of nominal length 4mm mm mm 500+ 40n +4 0 n 40 mm 1% mk mm +10 0 +20 0 +40 0 +60 0 +80 0 8 000 8 +1% BSISO17555:2003 3 4.2.4 Inside diameter of core of roll The inside diameter of the core of the roll should preferably be or . 4.2.5 Thickness The average film
29、thickness shall be within of the nominal value. Examples of possible thicknesses are shown in Table 4. 4.3 Properties The properties of films shall meet the requirements specified in Table 5 and Table 6. Table 4 Examples of thicknesses and associated tolerances Nominal thickness Thickness of film To
30、lerance 12 12 15 15 20 20 25 25 30 30 40 40 50 50 60 60 Table 5 Properties of film dependent on direction Property Unit Requirements Testing in accordance with Subclause Longitudinal a Transverse b Tensile strength at break MPa 5.4 Tensile strain at break 5.4 Dimensional change on heatingfor 5.5for
31、5.5 Coefficient of water vapour transmission c 5.6 a Longitudinal: direction parallel to extrusion direction. b Transverse: direction perpendicular to extrusion direction. c At , relative humidity. Table 6 Properties of film dependent on type of film Property Unit Requirements Testing in accordance
32、with Subclause Type 1 Type 2 Haze a 5.7 Wetting tension 5.8 a Only relevant to transparent films. 76 +2 0 mm 152 +2 0 mm 10 % m m m 1,2 1,5 2,0 2,5 3 4 5 6 100 100 % 270 150 120 C 15 min % 10,0 8,0 130 C 5 min % 10,0 8,0 g/100 m/(m 2 d) 2,0 40 C9 0% % 5,0 4,0 mN/m 36 35 BSISO17555:20034 4.4 Physiolo
33、gical behaviour For applications involving food contact, the film shall conform to all applicable regulatory requirements. 5 Test methods 5.1 Conditioning of specimens and test conditions Determine the tensile properties, haze and wetting tension at and R.H. in accordance with ISO 291, after conditi
34、oning the specimens for at least under the same conditions. Condition specimens for the determination of dimensional change on heating under the same conditions. 5.2 Appearance examination Check the appearance of the film with the naked eye. 5.3 Dimensions 5.3.1 Width Measure the width of the film u
35、sing a graduated metal ruler. 5.3.2 Inside diameter of core of roll Measure the inside diameter of the core of a roll using vernier calipers. 5.3.3 Thickness Measure the thickness of the film in accordance with ISO 4593 at ten equidistant points across the width of the film, using a dial gauge or eq
36、uivalent. Report the thickness as the arithmetic mean of the ten measurements, to the nearest . 5.4 Tensile strength and tensile strain at break Determine the tensile strength and tensile strain at break in accordance with ISO 527-3. Test five specimens of dimensions as shown in Figure1. The test sp
37、eed shall be , or . 5.5 Dimensional change on heating 5.5.1 Preparation of specimens Prepare five specimens of in width and in length for both the longitudinal direction and the transverse direction. Mark off a gauge length in the central portion of the specimen, each mark being approximately from t
38、he end. (23 2) C (50 5) % 4h 1 m (100 10) mm/min (200 20) mm/min (300 30) mm/min 20 mm 150 mm 100 mm 25 mm BSISO17555:2003 5 5.5.2 Procedure Suspend the specimens vertically in a circulating-air oven kept at for or for . After removal from the oven, allow the specimens to cool for to room temperatur
39、e. Measure the length between the marks. Calculate the dimensional change of each of the five specimens using the following equation: where is the dimensional change on heating, in percent;the length between the marks before heating, in millimetres; is the length between the marks after heating, in
40、millimetres. Report the arithmetic mean of the five results. Key width: to thickness: gauge length: initial distance between grips: overall length: Gauge marks. Figure 1 Specimen for tensile testing b 10 mm 25 mm h 1mm L 0 (50 0,5) mm L (100 5) mm l 3 150 mm a (120 3) C 15 min (130 3) C 5 min 30 min
41、 S= L 1 L 2 L 1 100 S L 1 L 2 BSISO17555:20036 5.6 Coefficient of water vapour transmission Determine the water vapour transmission rate in accordance with ISO 15106-1, ISO 15106-2 or ISO 15106-3. From the result, calculate the coefficient of water vapour transmission, expressed per of thickness, fr
42、om the following equation: where is the coefficient of water vapour transmission, in grams per thickness per square metre day ; is the water vapour transmission rate, in grams per square metre day ; is the thickness of the specimen, in micrometres. 5.7 Haze Determine the haze in accordance with ISO
43、14782. 5.8 Wetting tension Determine the wetting tension in accordance with ISO 8296. 6 Packaging The packaging and the size of the unit package shall be as agreed between the interested parties, taking into account the conditions of transportation and storage. 7 Marking 7.1 Marking on products If a
44、pplicable, the fact that the surface of the film has been subjected to corona discharge, flame or plasma treatment shall be clearly indicated. 7.2 Marking on packaging The following shall be marked on the package: a) the name of the product; b) the classification, i.e. whether the film has been trea
45、ted or not (see Table 1); c) the nominal thickness, width and length of the film in the roll; d) the year and month of manufacture; e) the manufacturers name or trademark. 100 m PWV= WVTR h 100 PWV 100 m g/100 m/(m 2 d) WVTR g/(m 2 d) h BSISO17555:2003. 7 BS ISO 17555:2003 BSI 389 Chiswick High Road
46、 London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment
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