Bsi bs en 13523 17 2011

BSI Standards Publication BS EN 13523 17 2011 Coil coated metals — Test methods Part 17 Adhesion of strippable films BS EN 13523 17 2011 BRITISH STANDARD National foreword This British Standard is the[.]

BSI Standards Publication

BS EN 13523-17:2011

Coil coated metals — Test methods

Part 17: Adhesion of strippable films

This British Standard is the UK implementation of EN 13523-17:2011.

It supersedes BS EN 13523-17:2004 which is withdrawn

The UK participation in its preparation was entrusted to Technical Committee STI/27, Paint systems for metallic substrates

A list of organizations represented on this committee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

© BSI 2011 ISBN 978 0 580 70112 2 ICS 25.220.60

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2011

Amendments issued since publication

Date Text affected

BS EN 13523-17:2011 EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

December 2011

English Version

Coil coated metals - Test methods - Part 17: Adhesion of

strippable films

Tôles prélaquées - Méthodes d'essai - Partie 17:

Adhérence des films pelables

Bandbeschichtete Metalle - Prüfverfahren - Teil 17: Haftfestigkeit von abziehbaren Folien

This European Standard was approved by CEN on 15 October 2011

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 any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member

This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E FÜ R N O R M U N G

Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2011 CEN All rights of exploitation in any form and by any means reserved

worldwide for CEN national Members

Ref No EN 13523-17:2011: E

2

Foreword 3

1 Scope 5

2 Normative references 5

3 Terms and definitions 5

4 Principle 5

5 Apparatus 5

5.1 For method 1 5

5.2 For method 2 6

6 Sampling 6

7 Test panels 6

8 Procedure 6

8.1 Panel preparation 6

8.1.1 Self-adhesive strippable film 6

8.1.2 Non-adhesive strippable film 6

8.2 Determination 7

8.2.1 Method 1 7

8.2.2 Method 2 8

8.3 Evaluation and expression of results 9

9 Precision 9

10 Test report 9

Bibliography 10

BS EN 13523-17:2011

EN 13523-17:2011 (E)

3

Foreword

This document (EN 13523-17:2011) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN

This European Standard shall be given the status of a national standard, either by publication of an identical text or

by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights

This document supersedes EN 13523-17:2004

EN 13523, Coil coated metals — Test methods, consists of the following parts:

 Part 0: General introduction and list of test methods;

 Part 1: Film thickness;

 Part 2: Specular gloss;

 Part 3: Colour difference - Instrumental comparison;

 Part 4: Pencil hardness;

 Part 5: Resistance to rapid deformation (impact test);

 Part 6: Adhesion after indentation (cupping test);

 Part 7: Resistance to cracking on bending (T-bend test);

 Part 8: Resistance to salt spray (fog);

 Part 9: Resistance to water immersion;

 Part 10: Resistance to fluorescent UV radiation and water condensation;

 Part 11: Resistance to solvents (rubbing test);

 Part 12: Resistance to scratching;

 Part 13: Resistance to accelerated ageing by the use of heat;

 Part 14: Chalking (Helmen method);

 Part 15: Metamerism;

 Part 16: Resistance to abrasion;

 Part 17: Adhesion of strippable films;

 Part 18: Resistance to staining;

4

 Part 19: Panel design and method of atmospheric exposure testing;

 Part 20: Foam adhesion;

 Part 21: Evaluation of outdoor exposed panels;

 Part 22: Colour difference - Visual comparison;

 Part 23: Colour stability in humid atmospheres containing sulfur dioxide;

 Part 24: Resistance to blocking and pressure marking;

 Part 25: Resistance to humidity;

 Part 26: Resistance to condensation of water;

 Part 27: Resistance to humid poultice (Cataplasm test);

 Part 29: Resistance to environmental soiling (Dirt pick-up and striping)

The main technical changes are:

 A note has been added to definition 3.1 that strippable film also is referred to as protection foil

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom

BS EN 13523-17:2011

EN 13523-17:2011 (E)

5

1 Scope

This European Standard specifies two methods for determining the numerical evaluation of the adhesion of strippable films which have previously been applied to an organic coating on a metallic substrate

Samples can be tested irrespective of whether the strippable film has been applied in the laboratory or on the production line

NOTE Method 1 is preferred for films with adhesive and method 2 for films without adhesive

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

EN 13523-0:2001, Coil coated metals — Test methods — Part 0: General introduction and list of test methods

EN 23270:1991, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and

testing (ISO 3270:1984)

3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 13523-0:2001 and the following apply

3.1

strippable film

plastics film applied to the coated surface in order to afford a temporary protection against mechanical damage

NOTE Strippable film is also referred to as protection foil

4 Principle

The force necessary to peel a film of given width from the surface of a coil coated material, at a defined angle and speed, is determined using appropriate instruments

5 Apparatus

5.1 For method 1

5.1.1 Hydraulic or electronic dynamometer with:

 a movable jaw speed of (300 ± 30) mm/min;

 a measuring scale usually reading from 0 N to 10 N;

 a traction meter set so that the force required to strip the film lies between 15 % and 85 % of the measuring scale

6

5.1.2 Cutting tool (e.g a sharp knife)

5.1.3 Ruler

5.2 For method 2

5.2.1 Spring balance (cylinder dynamometer) with a scale of up to 10 N

5.2.2 Cutting tool (e.g a sharp knife)

5.2.3 Ruler

6 Sampling

See EN 13523-0

7 Test panels

See EN 13523-0

8 Procedure

8.1 Panel preparation

8.1.1 Self-adhesive strippable film

When self-adhesive strippable film is applied in the laboratory, observe the following requirements:

a) Store the roll of film before use for a minimum of 24 h at ambient temperature and humidity For more accurate measurements, as required for instance in case of dispute, the temperature shall be (23 ± 2) °C and relative humidity (50 ± 5) %, in accordance with EN 23270:1991 Apply the film under these conditions

b) Apply the film to the surface of the test samples immediately after it has been uncoiled from the roll; take every care to avoid folds and blisters; press the film into place in the first instance by finger-tip pressure only

c) Use a cylindrical metal roller, rubber-covered to approximately 80° Shore, with a minimum diameter of 50 mm and a pressure of 2,0 N/mm width to press down the film, the metal roller being made to travel twice in a longitudinal direction over and back across the film surface; speed of travel shall be as close as practicable to

10 mm/s; no additional pressure shall be exerted on the test panel surface

Measure adhesion values (10 ± 1) min after the film has been applied

Measure the adhesion of the strippable film at ambient conditions For more accurate measurements, as required for instance in case of dispute, the temperature shall be (23 ± 2) °C and relative humidity (50 ± 5) % in accordance with EN 23270:1991

8.1.2 Non-adhesive strippable film

When non-adhesive strippable film is applied in the laboratory, heat the substrate before application to a temperature specified by the film supplier

After application of the strippable film, cool down the sample in a way as close as possible to the production line conditions

BS EN 13523-17:2011

EN 13523-17:2011 (E)

7

8.2 Determination

8.2.1 Method 1

Prepare five samples of dimensions 200 mm × 60 mm The 200 mm edge should be cut in the rolling direction (see 1 in Figure 1)

Cut through the strippable film with a cutting tool approximately 10 mm from each long edge and along the full length of each panel Remove the film along both edges leaving approximately 40 mm of film along the centre of the samples

Make five reference marks on each long edge of the samples at intervals of 30 mm, the first 50 mm from one end

(end c) The marks shall be 5 mm long, neither touching nor damaging the film (see Figure 1)

Detach by hand not more than 25 mm of film from end c perpendicular to the surface of the sample

Clamp the bared end (c) of the sample in one jaw of the dynamometer

Fold the detached film back by 180 degrees and clamp in the other jaw so that the film surfaces are accurately aligned without touching

Start the dynamometer at a speed of (300 ± 30) mm/min ensuring that the removed film moves parallel to, and does not touch, the film remaining on the sample (no friction between film surfaces)

As the point of contact between film and sample reaches a reference point, the force indicated on the dynamometer scale shall be recorded The result for the sample shall be the mean of the five measurements

Carry out the test on all five samples

8

Approximate dimensions in millimetres

Key

1 Rolling direction

a Sheet

b Film

c First reference mark

Figure 1 — Position of the marks 8.2.2 Method 2

Prepare a sample of dimensions 150 mm × 200 mm The 150 mm edge should be cut in the rolling direction (see 1

in Figure 2)

Cut through the strippable film with a cutting tool approximately 25 mm from and parallel to a short edge Make five further cuts parallel to the first cut at 30 mm intervals Remove the film at both edges leaving five strips of 30 mm (see Figure 2)

Detach by hand not more than 55 mm of one end of the first strip of film

Clamp the detached end of the film strip to the spring balance Hold down the sample and peel off the film by raising the spring balance perpendicular to the sample surface at a constant speed so that a steady reading is obtained Record the reading indicated on the spring balance

Repeat the test on the remaining strips

BS EN 13523-17:2011

EN 13523-17:2011 (E)

9

Approximate dimensions in millimetres

Key

1 Rolling direction

Figure 2 — Position of the cuts

8.3 Evaluation and expression of results

Disregard the highest and lowest values Calculate the arithmetic mean of the three remaining individual values Record the result as the mean value, expressed in Newtons per millimetre width of the strip removed

9 Precision

No precision data are available

10 Test report

The test report shall contain at least the following information:

a) all details necessary to identify the product tested;

b) a reference to this part of EN 13523 (EN 13523-17);

c) type of strippable film used;

d) method used (method 1 or 2);

e) result of the test, as indicated in 8.3;

f) any deviation from the test method specified;

g) date of the test

10

Bibliography

[1] EN 1396, Aluminium and aluminium alloys — Coil coated sheet and strip for general applications — Specifications

[2] EN 1939, Self adhesive tapes — Determination of peel adhesion properties

[3] EN 10169, Continuously organic coated (coil coated) steel flat products — Technical delivery conditions

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