prEN 321
(Main)Wood-based panels - Determination of moisture resistance under cyclic test conditions
Wood-based panels - Determination of moisture resistance under cyclic test conditions
This document specifies a test method for the determination of the moisture resistance of wood-based panels under cyclic test conditions.
Holzwerkstoffe - Bestimmung der Feuchtebeständigkeit durch Zyklustest
Dieses Dokument legt ein Prüfverfahren zur Bestimmung der Feuchtebeständigkeit von Holzwerkstoffen durch Zyklustest fest.
Panneaux à base de bois - Détermination de la résistance à l'humidité selon essais cycliques
Le présent document décrit une méthode d’essai en milieu humide pour la détermination du comportement des panneaux à base de bois dans les conditions d’un essai cyclique.
Lesne plošče – Ugotavljanje odpornosti proti vlagi pri cikličnih pogojih
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2024
Lesne plošče – Ugotavljanje odpornosti proti vlagi pri cikličnih pogojih
Wood-based panels - Determination of moisture resistance under cyclic test conditions
Holzwerkstoffe - Bestimmung der Feuchtebeständigkeit durch Zyklustest
Panneaux à base de bois - Détermination de la résistance à l'humidité selon essais
cycliques
Ta slovenski standard je istoveten z: prEN 321
ICS:
79.060.01 Lesne plošče na splošno Wood-based panels in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2024
ICS 79.060.01 Will supersede EN 321:2001
English Version
Wood-based panels - Determination of moisture resistance
under cyclic test conditions
Panneaux à base de bois - Détermination de la Holzwerkstoffe - Bestimmung der
résistance à l'humidité selon essais cycliques Feuchtebeständigkeit durch Zyklustest
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 112.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 321:2024 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 . 4
5 Apparatus . 4
5.1 Water bath . 4
5.2 Freezing cabinet . 4
5.3 Drying cabinet . 4
6 Test pieces . 5
6.1 Sampling . 5
6.2 Dimensions of test pieces . 5
6.3 Conditioning . 5
7 Procedure . 5
7.1 Treatment of the test pieces . 5
7.1.1 General. 5
7.1.2 Initial conditioning and measurement . 5
7.1.3 Cyclic treatment . 5
7.1.4 Reconditioning . 7
7.2 Determination of swelling in thickness . 7
7.3 Determination of tensile strength perpendicular to the plane of the board . 7
7.4 Determination of bending strength . 7
8 Expression of results . 8
8.1 Swelling in thickness . 8
8.2 Tensile strength . 8
8.3 Bending strength . 8
9 Test report . 8
Bibliography . 9
European foreword
This document (prEN 321:2024) has been prepared by Technical Committee CEN/TC 112 “Wood-based
panels”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 321:2001.
— the wording of 7.2 has been changed to avoid misinterpretations;
— The Bibliography has been updated.
This standard is one of a series specifying methods of test for determining the behaviour of wood-based
panels under the influence of moisture.
1 Scope
This document specifies a test method for the determination of the moisture resistance of wood-based
panels under cyclic test conditions.
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 310, Wood-based panels — Determination of modulus of elasticity in bending and of bending strength
EN 317, Particleboards and fibreboards — Determination of swelling in thickness after immersion in water
EN 319, Particleboards and fibreboards — Determination of tensile strength perpendicular to the plane of
the board
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
3 Terms and definitions
No te
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