CEN/TS 16526:2013

SLOVENSKI STANDARD
01-julij-2014
/HVQHSORãþH/DVWQRVWLLQ]DKWHYH]DVSHFLILNDFLMRVHQGYLþSORãþ]DSRKLãWYR
Wood-based panels - Determination of performance characteristics for specification of
sandwich boards for furniture
Holzwerkstoffe - Bestimmung der Leistungseigenschaften von Sandwich-Platten für
Möbel
Panneaux sandwiches pour meubles (SWB-F) - Produits manufacturés - Définition,
classification et méthodes d'essai pour la détermination des propriétés fonctionelles
Ta slovenski standard je istoveten z: CEN/TS 16526:2013
ICS:
79.060.01 /HVQHSORãþHQDVSORãQR Wood-based panels in
general
97.140 Pohištvo Furniture
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 16526
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
November 2013
ICS 79.060.01
English Version
Sandwich boards for furniture (SWB-F) - Factory made products
- Definition, classification and test methods for determination of
performance characteristics
Panneaux sandwiches pour meubles (SWB-F) - Produits Sandwichplatten für Möbel (SWB-F) - Werkmäßig
manufacturés - Définition, classification et méthodes d'essai hergestellte Produkte - Definition, Klassifizierung und
pour la détermination des propriétés fonctionelles Prüfverfahren zur Bestimmung der Leitstungseigenschaften
This Technical Specification (CEN/TS) was approved by CEN on 15 June 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
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16526:2013 E
worldwide for CEN national Members.

Contents Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Classification .9
4.1 General .9
4.2 Classification according to board lay-up .9
4.3 Classification according to surface appearance .9
4.4 Classification according to conditions of use .9
4.5 Classification according to application purposes .9
5 Symbols . 10
5.1 General . 10
5.2 Symbols related to conditions of use . 10
5.3 Symbols related to specific applications . 10
5.4 Combination of symbols for identification of sandwich boards . 10
6 Conditioning and test conditions . 10
7 Sampling, preparation and handling of test pieces and expression of test results . 11
7.1 General requirements . 11
7.2 Testing of SWB-F in combination with auxiliary material(s) or after execution of additional
processing steps . 12
7.3 Test piece size . 12
7.4 Determination of dimensions of test pieces . 12
7.5 Expression of test results . 13
8 Test methods . 13
8.1 General guideline on the description and use of test methods . 13
8.2 Physical properties . 13
8.2.1 Determination of board dimensions . 13
8.2.2 Moisture content . 13
8.2.3 Apparent density and mass per unit area . 14
8.2.4 Linear expansion due to changes in relative humidity . 14
8.2.5 Behaviour under humidity variations in successive uniform climates . 14
8.2.6 Moisture resistance . 14
8.3 Mechanical properties . 16
8.3.1 Flexural properties. 16
8.3.2 Surface soundness . 18
8.3.3 Compressive properties perpendicular to the plane of the board . 18
8.3.4 Impact resistance. 21
8.3.5 Shear strength . 22
8.4 Properties relevant to processing and to performance in use . 23
8.4.1 General . 23
8.4.2 Integrity of board edges . 24
8.4.3 Quality of edge banding . 24
8.4.4 Load bearing capacity of fasteners . 30
8.4.5 Shear resistance of a grooved board . 33
8.5 Formaldehyde emission . 34
9 Marking . 34
10 Test report . 34
Annex A (normative) Test methods . 36
Annex B (informative) Characterization of sandwich boards for different applications in furniture

manufacturing . 48
Bibliography . 51

Foreword
This document (CEN/TS 16526:2013) has been prepared by Technical Committee CEN/TC 112 “Wood-based
panels”, the secretariat of which is held by DIN.
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.
SAFETY STATEMENT — Persons using this document should be familiar with the normal laboratory practice,
if applicable. This document does not purport to address all of the safety problems, if any, associated with its
use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure
compliance with any regulatory conditions.
ENVIRONMENTAL SAFETY— It is understood that some of the material permitted in this standard may have
negative environmental impact. As technological advantages lead to better alternatives for these materials,
they will be eliminated from this standard to the extent possible. At the end of the test, it is recommended that
the user of the standard takes care to carry out an appropriate disposal of the wastes, according to local
regulation.
1 Scope
This European Technical Specification defines terms, establishes a classification and specifies test methods
for flat, factory made, non-structural, faced and unfaced sandwich boards for use in furniture manufacturing
(SWB-F) for dry (service class 1) and humid conditions (service class 2). This European Technical
Specification does not specify requirements.
Guidance is provided for the selection of board properties which are relevant for specific board applications.
This European Technical Specification is not applicable to products which are already covered by existing
standards.
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 311, Wood-based panels - Surface soundness - Test method
EN 318, Wood based panels - Determination of dimensional changes associated with changes in relative
humidity
EN 320, Particleboards and fibreboards - Determination of resistance to axial withdrawal of screws
EN 322, Wood-based panels - Determination of moisture content
EN 324-1, Wood-based panels - Determination of dimensions of boards - Part 1: Determination of thickness,
width and length
EN 324-2, Wood-based panels - Determination of dimensions of boards - Part 2: Determination of squareness
and edge straightness
EN 325, Wood-based panels - Determination of dimensions of test pieces
EN 326-1, Wood-based panels - Sampling, cutting and inspection - Part 1: Sampling and cutting of test pieces
and expression of test results
EN 326-2, Wood-based panels - Sampling, cutting and inspection - Part 2: Initial type testing and factory
production control
EN 326-3, Wood-based panels - Sampling, cutting and inspection - Part 3: Inspection of an isolated lot of
panels
EN 438-2, High-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (usually called
Laminates) - Part 2: Determination of properties
EN 717-1, Wood-based panels - Determination of formaldehyde release - Part 1: Formaldehyde emission by
the chamber method
EN 717-2, Wood-based panels - Determination of formaldehyde release - Part 2: Formaldehyde release
...