CEN/TS 16611:2014

SLOVENSKI STANDARD
01-maj-2014
Pohištvo - Ocenjevanje odpornosti površine proti mikrorazenju
Furniture - Assessment of the surface resistance to microscratching
Möbel - Bestimmung der Mikrokratz-Beständigkeit von Möbel-Oberflächen
Ameublement - Évaluation de la résistance des surfaces aux micro-rayures
Ta slovenski standard je istoveten z: CEN/TS 16611:2014
ICS:
97.140 Pohištvo Furniture
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 16611
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2014
ICS 97.140
English Version
Furniture - Assessment of the surface resistance to
microscratching
Ameublement - Évaluation de la résistance des surfaces Möbel - Bestimmung der Mikrokratzbeständigkeit von
aux micro-rayures Möbeloberflächen
This Technical Specification (CEN/TS) was approved by CEN on 14 October 2013 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16611:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Principle .7
5 Apparatus and materials .7
5.1 Martindale tester .7
5.2 Holder for scrub material .7
5.3 Diffuse light source .7
5.4 Reflectometer .7
5.5 Positioning device .8
5.6 Scrub materials .8
5.7 Double-sided tape .8
5.8 Cleaning cloth .9
5.9 Reference black high gloss HPL .9
6 Assembly and maintenance of the Martindale tester .9
7 Preparation and conditioning .9
7.1 Conditioning .9
7.2 Test surface .9
8 Test procedure .9
8.1 General .9
8.2 Testing . 10
8.2.1 Procedure A . 10
8.2.2 Procedure B . 11
9 Test report . 11
Annex A (normative) Method for checking the Lissajous figure . 12
Annex B (normative) Classification of the image after scratching according to procedure B . 13
Bibliography . 15

Figures
Figure 1 — Scheme of positioning device for the reflectometer on the shaded measurement area . 8
Figure A.1 — Examples of acceptable and unacceptable Lissajous figures . 12

Tables
Table 1 — Test procedures for determination of resistance to micro scratches . 10
Table B.1 — Classification for visual assessment according to procedure B . 13

Foreword
This document (CEN/TS 16611:2014) has been prepared by Technical Committee CEN/TC 207 “Furniture”,
the secretariat of which is held by UNI.
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.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope
This Technical Specification specifies a method for the assessment of the surface resistance to
microscratching and relates to rigid surfaces of all finished products regardless of materials.
Method A is suitable for all types of surface coatings and coverings except for lacquers with pearly or metallic
effects.
Method B is suitable for all types of surface.
It does not apply to finishes on leather and fabrics.
The test is intended to be carried out on a part of finished furniture, but can be carried out on test panels of the
same material, finished in an identical manner to the finished product, and of a size sufficient to meet the
requirements of the test.
It is essential that the test shall be carried out on unused surfaces.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN ISO 2813, Paints and varnishes ― Determination of specular gloss of non-metallic paint films at 20°, 60°
and 85° (ISO 2813)
EN ISO 12945-2, Textiles ― Determination of fabric propensity to surface fuzzing and to pilling ― Part 2:
Modified Martindale method (ISO 12945-2)
EN ISO 12947-1, Textiles ― Determination of the abrasion resistance of fabrics by the Martindale method ―
Part 1: Martindale abrasion testing apparatus (ISO 12947-1)
3 Terms and definitions
For the purposes of this Technical Specification, the following terms and definitions apply.
3.1
test surface
part of the test panel
3.2
test panel
panel including the test surface
Note 1 to entry: It may be cut from a finished item of furniture or it may be a separate panel produced in the same
manner as the finished item of furniture.
3.3
test area
part of the test surface effected by the scrub material (5.6)
3.4
rub
one revolution of the two outer drives of the Martindale tester
3.5
cycle
completion of all the translational movements tracing a Lissajous figure comprising 16 rubs
Note 1 to entry: This comprises of 16 revolutions of the two outer drives and 15 revolutions of the inner drive of the
Martindale tester.
3.6
lissajous figure
figure created by movement which ranges changes from a circle gradually narrowing ellipses, until it becomes
a straight line, from which progressively widening ellipses develop, in a diagonally opposite direction before
the pattern is repeated
4 Principle
The test surface shall be fixed on a horizontal table. A circular scrub material fixed on a holder impacts on the
test surface with a defined load. Table and holder shall be moved perpendicular to each other, in a
translational movement, with defined frequencies, tracing a Lissajous figure. The holder is additionally freely
rotatable around its own axis perpendicular to the horizontal plane.
The test surface is exposed to the scrub material for a predetermined number of rubs. The changes of the
surface are determined by gloss measurement or visual assessment.
5 Apparatus and materials
5.1 Martindale tester
The Martindale tester shall be as described in EN ISO 12947-1 with the following exceptions:
— the “Abrading table” is the table for the test surface;
— the “clamping ring and mechanism” is not necessary;
— the “specimen holder” is the holder for the scrub material;
— the “loading pieces” are not necessary.
5.2 Holder for scrub material
The holder for scrub material shall be as described in EN ISO 12945-2, with the following exceptions:
— consists of a guide plate with an inner diameter of (90 ± 0,5) mm, a large ring weight and a spindle with
an overall weight (612 ± 2) g (nominally called 6 N).
5.3 Diffuse light source
Light source providing evenly diffused light giving an illumination on the test surface of (1200 ± 400) lx. This
may either be diffuse daylight or be diffuse artificial daylight.
The daylight should be unaffected by surrounding trees, buildings, etc. When artificial light is used it is
recommended that it should have a correlated colour temperature of (6500 ± 50) K and an R greater than 92,
a
[ ]
by using a colour matching booth in accordance with EN ISO 3668:2001 1
5.4 Reflectometer
For gloss measurement with 3 angle measurement geometry as described in EN ISO 2813.
5.5 Positioning device
For gloss measurement on the same position before and after the test with 4 measurement points.
An example of a positioning device is shown in Figure 1.
Dimensions in millimetres
Reflectometer
direction of movement for
the measurement
Key
1 Measurement area
Figure 1 — Scheme of positioning device for the reflectometer on the shaded measurement area
5.6 Scrub materials
The scrub material shall be a nylon web imbedded with alumina abrasive. Two types of scrub materials (very
fine and ultra fine) shall be used. The scrub materials shall be cut or stamped on a diameter of (89 ± 1) mm.
+ +
NOTE Scotch Brite fleece 7447 (very fine) and 7448 (ultra fine) are examples of a suitable product available
commercially. This information is given for the convenience of users of this Technical Specification and does not constitute
an endorsement by CEN of this product.
5.7 Double-sided tape
To attach the scrub material on the guide plate of the holder and the test surface on the table.
5.8 Cleaning cloth
White soft absorbent cloth.
5.9 Reference black high gloss HPL
Black high gloss lacquered HPL (Reflectometer value R' ≥ 100, measured with 20° geometry of a
reflectometer according to 5.4 with antiscratch surface provided by corundum in the top lacquer.
NOTE James Heal Article Nr. JH701–501 is an example of a suitable product available commercially. This
information is given for the convenience of use
...