ISO 15988:2003

INTERNATIONAL ISO
STANDARD 15988
First edition
2003-05-15
Plastics — Film and sheeting — Biaxially
oriented poly(ethylene terephthalate)
(PET) films
Plastiques — Film et feuille — Films en poly(éthylène téréphtalate)
(PET) bi-orientés
Reference number
©
ISO 2003
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ii ISO 2003 – All rights reserved

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 which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
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Electrotechnical 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 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
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 15988 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products.
©
ISO 2003 – All rights reserved iii

.
iv
INTERNATIONAL STANDARD ISO 15988:2003(E)
Plastics — Film and sheeting — Biaxially oriented poly(ethylene
terephthalate) (PET) films
1Scope
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 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 — 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, Plastics — Film and sheeting — Determination of 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 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 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 groups as follows.
1) Film treated with corona discharge.
2) Film not treated with corona discharge.
©
ISO 2003 – All rights reserved 1

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 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 in 4.2.2 to 4.2.5, including
their nominal values, shall be agreed upon among interested parties.
4.2.2 Width
+4
The tolerance of width of the films shall be within mm.
An example of film width with corresponding tolerance is given in Table 1.
Table 1 — Example of a film width and its tolerance
Width Tolerance of width
mm mm
+4
500+ 40n
NOTE n: integer, 0, 1, 2, ., in width steps of 40 mm.
4.2.3 Length of film in a roll
+1
The tolerance of film length 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.
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
mkm m
+40
4000 4
+60
6000 6
+80
8000 8
> 8 000 >81% of nominal length
4.2.4 Inside diameter of core of a roll
+2
The inside diameter tolerance of a core of a roll shall be within mm of the nominal val
...