ISO 24334:2006
(Main)Laminate floor coverings — Determination of locking strength for mechanically assembled panels
Laminate floor coverings — Determination of locking strength for mechanically assembled panels
ISO 24334:2006 specifies a method for the determination of the locking strength of joints between laminate floor covering panels, which are assembled with both vertical and horizontal mechanical locking systems.
Revêtements de sol stratifiés — Détermination de la résistance à la traction des lames assemblées mécaniquement
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 24334
First edition
2006-08-01
Laminate floor coverings —
Determination of locking strength for
mechanically assembled panels
Revêtements de sol stratifiés — Détermination de la résistance à la
traction des lames assemblées mécaniquement
Reference number
ISO 24334:2006(E)
©
ISO 2006
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ISO 24334:2006(E)
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ii © ISO 2006 – All rights reserved
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ISO 24334:2006(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Principle. 1
4 Apparatus . 1
5 Sampling and conditioning of panels. 2
6 Testing of the short panel sides. 2
7 Testing of the long panel sides . 4
8 Testing of tiles, short side . 5
9 Testing of tiles, long side. 7
10 Repetition . 9
11 Expression of results . 9
12 Test report . 10
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ISO 24334:2006(E)
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
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International 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 24334 was prepared by Technical Committee ISO/TC 219, Floor coverings.
iv © ISO 2006 – All rights reserved
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INTERNATIONAL STANDARD ISO 24334:2006(E)
Laminate floor coverings — Determination of locking strength
for mechanically assembled panels
1 Scope
This International Standard specifies a method for the determination of the locking strength of joints between
laminate floor covering panels, which are assembled with both vertical and horizontal mechanical locking
systems.
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 7500-1:2004, Metallic materials — Verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Verification and calibration of the force-measuring system
3 Principle
Mechanically assembled panels with mechanical locking systems are pulled apart to an opening of 0,20 mm
or until the lock breaks.
4 Apparatus
4.1 Tensile testing machine, verified and calibrated in accordance with ISO 7500-1:2004 and conforming
to class 3 for the force range which is applied by the locking strength measurement.
4.2 Measuring instrument (sliding calliper), with an accuracy of 0,1 mm, to determine the length, width
and thickness of the specimen.
4.3 Saw.
4.4 Balance, with an accuracy of 0,1 g.
4.5 External extensometer, with an accuracy of 0,01 mm.
4.6 Two clamping devices, attached to the tensile testing machine. The clamping devices hold the test
specimen in attachment area F1 and F2 (Figure 2, Figure 4, Figure 6 and Figure 8).
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ISO 24334:2006(E)
5 Sampling and conditioning of panels
Sample five panels from the same package for the preparation of five test specimens for the short side locks
and five for the long side locks (if panel dimensions allow it, the sampling of the short side and the long side
may come from the same panel).
The panels from which the test specimens are cut shall be conditioned to a constant mass at (50 ± 5) %
relative humidity (RH) and (23 ± 2) °C.
Constant mass is considered to be reached when the results of two successive weighing operations, carried
out at an interval of 24 h, do not differ more than 0,1 % of the mass of the panels.
6 Testing of the short panel sides
6.1 Cutting of panels
Cut two pieces from each panel, A1 and B1, as shown in Figure 1.
If the width of the panel is equal to or more than 100 mm, the length shall be optional (to fit the machine) but
shall be a minimum of 100 mm.
If the width of the panel is less than 100 mm, the actual width shall be used in the specimen.
Key
l length of panel
w width of panel
Figure 1 — Cutting of panel for short side testing
6.2 Assembling of test specimens
Measure the width of A1 and B1 to the nearest millimetre, and their thickness to the nearest 0,1 mm.
As shown in Figure 2, connect the short side lock from A1 and B1 according to the fitting instruction from the
manufacturer.
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ISO 24334:2006(E)
Dimensions in millimetres
Key
F1 attachment area 1 for the first clamping device
F2 attachment area 2 for the second clamping device
Figure 2 — Assembled test piece for short side testing
6.3 Tensile testing
6.3.1 General
The test atmosphere shall be (50 ± 5) % RH and (23 ± 2) °C unless the test is completed within 60 min of
removal of the test specimens from the conditioning atmosphere.
The pulling direction shall be perpendicular to the lock.
6.3.2 Procedure
First attach the clamp to A1 (in attachment area F1, see Figure 2). When attaching the clamp to B1 (in
attachment area F2), ensure that there is no added stretch or pull.
Attach the clamps from the test apparatus in the centre of A1 and B1, and perpendicular to the attachment
areas, no more than 200 mm apart.
Fix the external extensometer to the test specimen or to the clamps.
Reset the tensile testing machine before starting the test.
Operate the tensile testing machine, employing a −10 N force tension to pull the test specimens apart at a
speed of 0,5 mm/min.
Record the force, F , in newtons required to reach an opening of 0,20 mm.
0,2
Record the force, F , in newtons required to reach joint break, as well as the opening between the
max
separated elements, ∆s, at joint break. Measure ∆s to the nearest 0,01 mm.
Perform the test on five specimens, made from five different panels.
Calculate the average value of the five registered measurements of F , F and ∆s respectively. Check
0,2 max
their validity according to Clause 10.
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ISO 24334:2006(E)
7 Testing of the long panel sides
7.1 Cutting of panels
Cut two pieces, A2 and B2, from each panel as shown in Figure 3.
If the length of t
...
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