EN 301:2023
(Main)Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification and performance requirements
Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification and performance requirements
This document establishes a classification for phenolic and aminoplastic polycondensation adhesives according to their suitability for use for load-bearing timber products in defined climatic exposure conditions, and specifies performance requirements for such adhesives for the factory manufacture or factory-like manufacturing conditions of load-bearing timber products only.
This document only specifies the performance of an adhesive for use in an environment corresponding to the defined conditions.
The performance requirements of this document are applicable to the adhesive only, not to the manufacturing timber products. This document does not cover the performance of adhesives for on-site gluing (except for factory-like conditions) or the production of wood-based panels, except solid wood panels, or modified and stabilized wood with considerably reduced swelling and shrinkage properties, e.g. acetylated wood, heat treated wood and polymer impregnated wood.
This document is primarily intended for use by adhesive manufacturers and for use in timber products bonded with adhesives, to assess or control the quality of adhesives. The requirements are applicable to the type testing of the adhesives. Production control activities are outside the scope of this document.
Adhesives meeting the requirements of this document are adequate for use in load-bearing timber products, provided that the bonding process has been carried out according to an appropriate product standard.
Klebstoffe, Phenoplaste und Aminoplaste, für tragende Holzbauteile - Klassifizierung und Leistungsanforderungen
Dieses Dokument stellt eine Klassifizierung für Polykondensationsklebstoffe auf Phenoplast- und Aminoplastbasis entsprechend ihrer Eignung zur Verwendung für tragende Holzprodukte unter bestimmten Klimabedingungen auf und legt die Leistungsanforderungen an derartige Klebstoffe ausschließlich zur werksmäßigen Herstellung oder Herstellung unter werksähnlichen Bedingungen von tragenden Holzprodukten fest.
Dieses Dokument legt nur das Leistungsverhalten eines Klebstoffs für den Einsatz in einer Umgebung fest, die den festgelegten Bedingungen entspricht.
Die Leistungsanforderungen in diesem Dokument sind lediglich für den Klebstoff anwendbar, nicht für die Herstellung von Holzprodukten. Dieses Dokument behandelt weder das Leistungsverhalten von Klebstoffen für die Vor-Ort-Verklebung (ausgenommen bei werksähnlichen Bedingungen) noch die Produktion von Holzwerkstoffen, ausgenommen Massivholzplatten. Es ist nicht für modifiziertes und vergütetes Holz mit beträchtlich verringerten Quellungs- und Schwindungseigenschaften anwendbar, wie z. B. acetyliertes Holz, wärmebehandeltes Holz und mit Kunstharz imprägniertes Holz.
Dieses Dokument ist in erster Linie für den Gebrauch durch die Hersteller der Klebstoffe und der verklebten Holzprodukte bestimmt, um die Qualität von Klebstoffen zu beurteilen oder zu überprüfen. Die Anforderungen sind für die Typprüfung von Klebstoffen anwendbar. Aktivitäten im Rahmen der Produktionskontrolle gehören nicht zum Anwendungsbereich dieses Dokuments.
Klebstoffe, die die Anforderungen dieses Dokuments erfüllen, sind für den Einsatz in tragenden Holzprodukten geeignet, vorausgesetzt, dass der Verklebungsvorgang nach einer entsprechenden Produktnorm vorgenommen wurde.
Adhésifs de nature phénolique et aminoplaste, pour structures portantes en bois - Classification et exigences de performance
Le présent document établit une classification des adhésifs de polycondensation de type phénolique ou aminoplaste en fonction de leur aptitude à l’emploi dans les structures portantes en bois dans des conditions d’exposition climatique définies, et spécifie les exigences de performance applicables à ces adhésifs uniquement lorsqu’ils sont utilisés pour la fabrication en usine de produits porteurs en bois, ou dans des conditions semblables à la fabrication en usine.
Le présent document spécifie la performance d’un adhésif uniquement dans l’environnement correspondant aux conditions définies.
Les exigences relatives à la performance définies dans le présent document ne s’appliquent qu’aux adhésifs et non aux produits manufacturés en bois. Le présent document ne couvre pas la performance des adhésifs utilisés pour le collage sur site (à l’exception des conditions semblables à la fabrication en usine) ou pour la fabrication de panneaux à base de bois, à l’exception des panneaux en bois massif, ou pour le bois modifié et stabilisé ayant une propension considérablement réduite au gonflement et au retrait, par exemple le bois acétylé, le bois traité à la chaleur et le bois imprégné de polymère.
Le présent document s’adresse avant tout aux fabricants d’adhésifs pour leur permettre, dans le domaine des produits en bois collés, d’évaluer ou de contrôler la qualité des adhésifs. Les exigences s’appliquent aux essais de type des adhésifs. Les activités de contrôle de la production ne relèvent pas du domaine d’application du présent document.
Les adhésifs répondant aux exigences du présent document conviennent pour une utilisation dans des produits porteurs en bois, à condition que le processus de collage ait été réalisé conformément à une norme de produit appropriée.
Lepila na osnovi fenolov in aminoplastov za nosilne lesene konstrukcije - Razvrstitev in zahteve za delovanje
Ta dokument določa razvrstitev za fenolna in aminoplastična lepila v skladu z njihovo primernostjo za uporabo pri nosilnih lesenih konstrukcijah pri določenih pogojih izpostavljenosti podnebnim razmeram ter določa zahtevane lastnosti za taka lepila za tovarniško proizvodnjo ali tovarni podobne proizvodne pogoje za izključno nosilne lesene konstrukcije.
Ta dokument določa lastnosti lepila izključno za uporabo v okolju, ki ustreza podanim pogojem.
Zahteve glede učinkovitosti v tem dokumentu se uporabljajo samo za lepila, ne za lesene konstrukcije. Ta dokument ne zajema lastnosti lepil za lepljenje na mestu uporabe (razen v pogojih, podobnih tovarniškim) niti proizvodnje lesnih plošč, razen polnih lesnih plošč, ali obdelanega in stabiliziranega lesa, ki bistveno manj nabreka in se krči, kot so acetiliran les, toplotno obdelan les in polimerno impregniran les.
Ta dokument je namenjen predvsem za proizvajalce lepil in za uporabo pri lesenih konstrukcijah, vezanih z lepili, za ocenjevanje ali nadzor kakovosti lepil. Zahteve se uporabljajo za tipsko preskušanje lepil. Dejavnosti kontrole proizvodnje ne spadajo na področje uporabe tega dokumenta.
Lepila, ki izpolnjujejo zahteve tega dokumenta, so primerna za uporabo pri nosilnih lesenih konstrukcijah pod pogojem, da je bil postopek vezave izveden v skladu z ustreznim standardom za proizvod.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2023
Lepila na osnovi fenolov in aminoplastov za nosilne lesene konstrukcije -
Razvrstitev in zahteve za delovanje
Adhesives, phenolic and aminoplastic, for load-bearing timber structures - Classification
and performance requirements
Klebstoffe, Phenoplaste und Aminoplaste, für tragende Holzbauteile - Klassifizierung und
Leistungsanforderungen
Adhésifs de nature phénolique et aminoplaste, pour structures portantes en bois -
Classification et exigences de performance
Ta slovenski standard je istoveten z: EN 301:2023
ICS:
83.180 Lepila Adhesives
91.080.20 Lesene konstrukcije Timber structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 301
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2023
EUROPÄISCHE NORM
ICS 83.180 Supersedes EN 301:2017
English Version
Adhesives, phenolic and aminoplastic, for load-bearing
timber structures - Classification and performance
requirements
Adhésifs de nature phénolique et aminoplaste, pour Klebstoffe, Phenoplaste und Aminoplaste, für tragende
structures portantes en bois - Classification et Holzbauteile - Klassifizierung und
exigences de performance Leistungsanforderungen
This European Standard was approved by CEN on 18 December 2022.
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 301:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Classification. 7
5 Requirements . 10
5.1 General. 10
5.2 Tensile shear test . 11
5.3 Delamination test . 12
5.4 Fibre damage test . 13
5.5 Shrinkage test . 13
5.6 Static load test . 13
5.7 Type testing of separate application finger joint adhesive . 14
6 Working properties of the adhesive . 14
6.1 General. 14
6.2 Physical properties of adhesive prepared for use . 14
6.3 Use of the adhesive . 14
7 Marking and labelling . 14
Annex A (normative) Delamination test for finger joints with separate spread of adhesive
and hardener . 15
A.1 Production of the specimens . 15
A.2 Testing . 16
A.3 Expression of results . 16
Bibliography . 17
European foreword
This document (EN 301:2023) has been prepared by Technical Committee CEN/TC 193 “Adhesives”,
the secretariat of which is held by UNE.
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 August 2023, and conflicting national standards shall
be withdrawn at the latest by August 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 EN 301:2017.
a) Table 2 — 2 mm glue line – EN 302-3 Mandatory despite pH-value – beech used in the test;
b) Table 2 — Gap filling adhesives – EN 302-8 – tested with 1 mm glue line;
c) 5.1 b) test with representative samples of preservative treated Scots pine or Silver fir, which also
covers preservative treated Norway spruce, has been added.
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.
Introduction
This document is one of a series of standards dealing with phenolic and aminoplastic adhesives for use
with timber structures, and is published in support of product standards for load-bearing timber
structures in connection with EN 1995-1-1, Eurocode 5: Design of timber structures — Part 1-1:
General — Common rules and rules for buildings.
The series consists of:
— one standard for classification and performance requirements (EN 301);
— six test methods (EN 302-1, EN 302-2, EN 302-3, EN 302-4, EN 302-8 and Annex A of this
document) used to assess the performance of adhesives after specified heat and humidity
treatments; and
— three test methods (EN 302-5, EN 302-6 and EN 302-7) to characterize the working properties of
the adhesive.
SAFETY STATEMENT
Persons using this document should be familiar with the normal laboratory practice, if applicable. This
document cannot 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 STATEMENT
It is understood that some of the material permitted in this standard may have a negative
environmental impact. As technological advantages lead to acceptable alternatives for these materials,
they will be eliminated from this standard to the greatest extent possible.
At the end of the test, the user of the standard should take care to carry out an appropriate disposal of
the wastes, according to local regulations.
1 Scope
This document establishes a classification for phenolic and aminoplastic polycondensation adhesives
according to their suitability for use for load-bearing timber products in defined climatic exposure
conditions, and specifies performance requirements for such adhesives for the factory manufacture or
factory-like manufacturing conditions of load-bearing timber products only.
This document only specifies the performance of an adhesive for use in an environment corresponding
to the defined conditions.
The performance requirements of this document are applicable to the adhesive only, not to the
manufacturing timber products. This document does not cover the performance of adhesives for on-site
gluing (except for factory-like conditions) or the production of wood-based panels, except solid wood
panels, or modified and stabilized wood with considerably reduced swelling and shrinkage properties,
e.g. acetylated wood, heat treated wood and polymer impregnated wood.
This document is primarily intended for use by adhesive manufacturers and for use in timber products
bonded with adhesives, to assess or control the quality of adhesives. The requirements are applicable to
the type testing of the adhesives. Production control activities are outside the scope of this document.
Adhesives meeting the requirements of this document are adequate for use in load-bearing timber
products, provided that the bonding process has been carried out according to an appropriate product
standard.
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 302-1, Adhesives for load-bearing timber structures — Test methods — Part 1: Determination of
longitudinal tensile shear strength
EN 302-2, Adhesives for load-bearing timber structures — Test methods — Part 2: Determination of
resistance to delamination
EN 302-3, Adhesives for load-bearing timber structures — Test methods — Part 3: Determination of the
effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile
strength
EN 302-4, Adhesives for load-bearing timber structures — Test methods — Part 4: Determination of the
effects of wood shrinkage on the shear strength
EN 302-8, Adhesives for load-bearing timber structures — Test methods — Part 8: Static load test of
multiple bond line specimens in compression shear
EN 408, Timber structures — Structural timber and glued laminated timber — Determination of some
physical and mechanical properties
EN 923, Adhesives — Terms and definitions
EN 1245, Adhesives — Determination of pH
EN 12092, Adhesives — Determination of viscosity
EN 13183-2, Moisture content of a piece of sawn timber — Part 2: Estimation by electrical resistance
method
EN 13183-3, Moisture content of a piece of sawn timber — Part 3: Estimation by capacitance method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 923 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
aminoplastic resin
thermosetting synthetic resin derived from a condensation reaction of the –NH groups or –NH groups
of amines or amides with aldehydes
3.2
phenolic resin
thermosetting synthetic resin derived from a condensation reaction of a phenol with an aldehyde
3.3
polycondensation adhesive
adhesive mixture made from a resin formed by a polymerization reaction involving the elimination of
water, usually with a hardener
Note 1 to entry: Such adhesives usually also contain extenders and/or fillers.
3.4
service class 1
climatic conditions characterized by a moisture content in the materials corresponding to a
temperature of 20 °C and the relative humidity of the surrounding air only exceeding 65 % for a few
weeks per year
Note 1 to entry: In serv
...
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