EN 16611:2023

SLOVENSKI STANDARD
01-julij-2023
Nadomešča:
SIST-TS CEN/TS 16611:2016
Pohištvo - Ocenjevanje odpornosti površine proti mikrorazenju
Furniture - Assessment of the surface resistance to microscratching
Möbel - Bestimmung der Mikrokratzbeständigkeit von Möbeloberflächen
Ameublement - Évaluation de la résistance des surfaces aux micro-rayures
Ta slovenski standard je istoveten z: EN 16611:2023
ICS:
97.140 Pohištvo Furniture
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 16611
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2023
EUROPÄISCHE NORM
ICS 97.140 Supersedes CEN/TS 16611:2016
English Version
Furniture - Assessment of the surface resistance to
microscratching
Ameublement - Évaluation de la résistance des Möbel - Bestimmung der Mikrokratzbeständigkeit von
surfaces aux micro-rayures Möbeloberflächen
This European Standard was approved by CEN on 17 March 2023.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16611:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 5
5 Apparatus and materials . 5
5.1 Martindale tester . 5
5.2 Holder for scrub material . 5
5.3 Diffuse light source. 5
5.4 Glossmeter. 6
5.5 Positioning device . 6
5.6 Scrub materials . 6
5.7 Double-sided tape . 7
5.8 Cleaning cloth . 7
5.9 Reference black high gloss HPL . 7
6 Assembly and maintenance of the Martindale tester . 7
7 Preparation and conditioning . 7
7.1 Conditioning . 7
7.2 Test surface . 7
8 Test procedure . 7
8.1 General. 7
8.2 Testing . 8
8.2.1 Procedure A . 8
8.2.2 Procedure B . 9
9 Test report . 9
Annex A (normative) Method for checking the Lissajous figure . 10
Annex B (normative) Classification of the image after scratching according to procedure B
................................................................................................................................................................... 11
European foreword
This document (EN 16611:2023) has been prepared by Technical Committee CEN/TC 207 “Furniture”,
the secretariat of which is held by UNI.
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 October 2023, and conflicting national standards shall
be withdrawn at the latest by October 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TS 16611:2016.
The main changes compared to the previous edition are listed below:
— revised Clause 5 regarding 5.1 “Martindale tester”, 5.3 “Diffuse light source”, 5.6 “Scrub materials”,
5.9 “Reference black high gloss HPL”;
— additional test parameter “load” added to Table 1;
— revised 8.2.1 “Procedure A” regarding calibration of ultra fine scrub material and microscratching of
test area;
— revised 8.2.2 “Procedure B” regarding microscratching of test area;
— revised explanation in Table B.1;
— document editorially revised in its entirety.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document specifies a method for the assessment of the surface resistance to microscratching and
relates to rigid surfaces of all finished products, considering the following exceptions:
— 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.
— No method applies to finishes on leather and fabrics.
This document is applicable to the test intended to be carried out on a part of finished furniture, but it
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 be carried out on unused surfaces.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 ISO 2813, Paints and varnishes - Determination of gloss value at 20°, 60° and 85° (ISO 2813)
EN ISO 12945-2, Textiles - Determination of fabric propensity to surface pilling, fuzzing or matting - 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 document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
test surface
part of the test panel
3.2
test panel
panel including the test surface
Note 1 to entry: It can be cut from a finished item of furniture or it can be a separate panel produced in the same
manner as the finished item of furniture.
3.3
test area
part of the test surface affected 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 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 specified load. Table and holder shall be moved perpendicular to each other, in
a translational movement, with specified 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” on top of the spindle 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 with artificial light providing evenly diffused light giving an illumination on the test surface
of (1 200 ± 400) lx.
For artificial light it is recommended that it can have a correlated colour temperature of (6 500 ± 200) K.
5.4 Glossmeter
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
Glossmeter
direction of movement
for the measurement
Key
1 measurement area
Figure 1 — Scheme of positioning device for the glossmeter on the shaded measurement area
5.6 Scrub materials
The scrub material shall be a polyamide 6.6web 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 ± 2) 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 document 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 (Gloss value R′ ≥ 100 GU (gloss unit)), measured with 60° geometry of a
glossmeter according to 5.4 with antis
...