SIST-TS CEN/TS 13307-2:2010
(Main)Laminated and finger jointed timber blanks and semi-finished profiles for non-structural uses - Part 2: Production control
Laminated and finger jointed timber blanks and semi-finished profiles for non-structural uses - Part 2: Production control
This Technical Specification specifies the method of control and tests for glue bond performance of lamination and finger jointing processes employed in the production of timber blanks and semi-finished profiles (products) for joinery applications. The methods of control are set out to ensure the durability of the glue line according to the service class. The specific requirements for dimensions, stability and moisture content are given in EN 13307-1.
Holzkanteln und Halbfertigprofile für nichttragende Anwendungen - Teil 2: Produktionskontrolle
Diese Technische Spezifikation legt das Kontrollverfahren und die Prüfungen für das Verhalten der Kleb-verbindung von Schichtverklebungs und Keilzinkungsverfahren fest, die bei der Herstellung von Holzkanteln und Halbfertigprofilen (Produkten) für Tischlereiarbeiten angewendet werden.
Die Kontrollverfahren dienen dazu, die Dauerhaftigkeit der Klebfuge in Übereinstimmung mit der Nutzungs-klasse sicherzustellen.
Die besonderen Anforderungen an Maße, Stehvermögen und Feuchtegehalt sind in EN 13307 1 enthalten.
Ebauches et profilés semi-finis en bois laminés et assemblés par entures multiples pour usage non structurels - Partie 2 : Contrôle de production
La présente Norme européenne spécifie la méthode pour le contrôle et les essais de performance des
liaisons de collage pour les procédés de lamellation et d'aboutage par entures multiples, utilisés dans la
production d'ébauches et de profilés semi-finis en bois pour des applications en menuiserie.
Les méthodes de contrôle sont établies dans le but de garantir la durabilité du plan de colle en fonction de la
classe de service.
Les exigences spécifiques en matière de dimensions, de stabilité et de teneur en humidité sont données dans
l'EN 13307-1.
Lamelirani in konstrukcijski les z zobatimi spoji in leseni polizdelki za profile za nekonstrukcijsko uporabo - 2. del: Kontrola proizvodnje
Ta tehnična specifikacija določa kontrolno metodo in preskuse za učinkovitost vezi lepila pri procesih lameliranja in spajanja z zobatimi spoji, ki se uporabljajo v proizvodnji konstrukcijskega lesa in lesenih profilov (izdelkov) za uporabo v stavbnem mizarstvu. Kontrolne metode so navedene zaradi zagotavljanja trajnosti linije lepila v skladu z razredom storitve. Posebne zahteve glede dimenzij, stabilnosti in vsebnosti vlage so podane v EN 13307-1.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TS CEN/TS 13307-2:2010
01-april-2010
Lamelirani in konstrukcijski les z zobatimi spoji in leseni polizdelki za profile za
nekonstrukcijsko uporabo - 2. del: Kontrola proizvodnje
Laminated and finger jointed timber blanks and semi-finished profiles for non-structural
uses - Part 2: Production control
Holzkanteln und Halbfertigprofile für nichttragende Anwendungen - Teil 2:
Produktionskontrolle
Ebauches et profilés semi-finis en bois laminés et assemblés par entures multiples pour
usage non structurels - Partie 2 : Contrôle de production
Ta slovenski standard je istoveten z: CEN/TS 13307-2:2009
ICS:
79.080 Polizdelki iz lesa Semi-manufactures of timber
SIST-TS CEN/TS 13307-2:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST-TS CEN/TS 13307-2:2010
TECHNICAL SPECIFICATION
CEN/TS 13307-2
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
December 2009
ICS 79.080
English Version
Laminated and finger jointed timber blanks and semi-finished
profiles for non-structural uses - Part 2: Production control
Ebauches et profilés semi-finis en bois lamellé-collés et Holzkanteln und Halbfertigprofile für nicht tragende
assemblés par enture multiples pour usages non Anwendungen - Teil 2: Produktionskontrolle
structurels - Partie 2: Contrôle de production
This Technical Specification (CEN/TS) was approved by CEN on 1 September 2009 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, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 13307-2:2009: E
worldwide for CEN national Members.
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Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Material requirements .7
4.1 Timber .7
4.1.1 General .7
4.1.2 Moisture content .7
4.2 Adhesive .8
5 Manufacturing .8
6 Sampling and testing .8
6.1 General .8
6.2 Initial type testing .9
6.3 Factory production control tests .9
6.3.1 Sampling .9
7 Testing requirements . 10
7.1 Conditioning chambers . 10
Air conditioning chamber requirements . 11
Climate classification . 11
Air temperature and Relative Humidity conditions . 11
7.2 Water tank . 11
7.3 Loading machine . 11
7.4 Ancillary equipment . 12
8 Sampling conditioning . 12
8.1 Sequences . 12
8.2 Pre-conditioning . 12
8.3 Conditioning sequences . 13
8.3.1 Service Class 1. 13
8.3.2 Service Class 2. 13
8.3.3 Service Class 3. 13
9 Lamella glue line assessment . 13
9.1 Moisture resistance . 13
9.1.1 Conditioning requirements . 13
9.1.2 Delamination . 13
9.2 Shear assessment . 14
9.3 Chisel/wedge assessment (FPC only) . 14
9.4 Penetration test (FPC only) . 14
9.5 Calculation of results . 14
10 Finger joint assessment . 14
10.1 Bending . 14
10.2 Water tightness assessment (Service Class 3) . 15
10.3 Iodine test . 15
10.4 Penetration test (coloured water test) . 16
10.5 Calculation of results . 16
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11 Requirements . 16
11.1 General . 16
11.2 Laminate glue line . 16
11.2.1 Moisture resistance . 16
11.2.2 Chisel test. 17
11.2.3 Penetration test . 17
11.3 Finger joints . 17
11.3.1 Bending . 17
11.3.2 Bending (Service Class 3) . 17
11.4 Water tightness . 17
11.5 Penetration test (Coloured Water test) . 17
12 Records . 18
Annex A (informative) Classification of adhesives. 19
Annex B (informative) Manufacturing recommendations . 20
B.1 Premises . 20
B.2 Storage . 20
B.2.1 Timber . 20
B.2.2 Adhesive . 20
B.2.3 Finished products . 20
B.3 Equipment . 20
B.4 Tolerance . 20
B.5 Moisture content . 21
Annex C (informative) Calculation of results for laminated profiles . 22
C.1 Calculation of de-lamination quality of the glue line . 22
C.2 Calculation of the shear strength of the glue line . 22
Annex D (informative) Calculation of results for finger joints . 24
D.1 Calculation of finger joints strength under bending . 24
D.2 Calculation of strength radio under bending for moisture resistance . 25
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Foreword
This document (CEN/TS 13307-2:2009) has been prepared by Technical Committee CEN/TC 175 “Round and
sawn timber”, the secretariat of which is held by AFNOR.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
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Introduction
The production requirements and control described in this Technical Specification are designed so as to
obtain a reliable and durable bond between the lamellae, in order that the bonds in the glued laminated blanks
will maintain their integrity throughout their intended service life. Such blanks are not intended to be used as
load-bearing members.
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1 Scope
This Technical Specification specifies the method of control and tests for glue bond performance of lamination
and finger jointing processes employed in the production of timber blanks and semi-finished profiles (products)
for joinery applications.
The methods of control are set out to ensure the durability of the glue line according to the service class.
The specific requirements for dimensions, stability and moisture content are given in EN 13307-1.
2 Normative references
The following referenced documents are indispensable for the application 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 204, Classification of thermoplastic wood adhesives for non-structural applications
EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures ― Classification and
performance requirements
EN 392, Glued laminated timber ― Shear test of glue lines
EN 408, Timber structures ― Structural timber and glued laminated timber ― Determination of some physical
and mechanical properties
EN 12765, Classification of thermosetting wood adhesives for non-structural applications
EN 13183-1, Moisture content of a piece of sawn timber ― Part 1: Determination by oven dry method
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
EN 13307-1, Timber blanks and semi-finished profiles for non-structural uses ― Part 1 : Requirements
EN 13354, Solid wood panels (SWP) ― Bonding quality ― Test method
EN 14220, Timber and wood-based materials in external windows, external door leaves and external
doorframes ― Requirements and specifications
EN 14221, Timber and wood-based materials in internal windows, internal door leaves and internal
doorframes ― Requirements and specifications
EN 14257, Adhesives ― Wood adhesives ― Determination of tensile strength of lap joints at elevated
temperature (WATT '91)
EN 14298, Sawn timber ― Assessment of drying quality
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
adhesive failure
failure of the glue bond, where an adhesive film, free of wood particles, may be detected on the opposing
sheared wood surfaces
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3.2
wood failure
failure of the glueline which is not an adhesive failure, where wood fibres remain firmly adhered to opposing surfaces of
the sheared glue line
3.3
wood failure percentage
percentage of the wood failure area in relation to the total sheared area
3.4
service classes 1, 2 and 3
classification system which indicates the average equilibrium moisture content of wood in service, described
in EN 13307-1
3.5
batch
profiles with same lay-up prepared within the same time period in same production line
3.6
profile type
profile defined by:
a) the wood species or combination of wood species;
b) the glue;
c) the intended service class;
d) the type of connection between the timber elements including the profile, laminating, edge-jointing and
end-jointing and the cross section of the lamella;
e) profile shape
3.7
thermoplastic adhesive
adhesive capable of being softened by heat and hardened by cooling
NOTE "Hardened" as opposed to "chemically cured".
3.8
thermosetting adhesive
cross-linked adhesive which has undergone a chemical reaction by the action of e.g. heat, catalysts,
ultraviolet light, etc., leading to a relatively infusible state
4 Material requirements
4.1 Timber
4.1.1 General
All the requirements for timber are given in EN 13307-1.
4.1.2 Moisture content
Timber shall be dried to a moisture content level appropriate to adhesive being used and end use application.
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Guidance on the moisture content of the timber in the completed components is given in Table 1 for the
particular end uses described.
Table 1 — Typical moisture content levels of timber in particular end uses
Service classes Expected average Examples of end use Applicable product
moisture content in products standards
a
service
1 Up to about 12 % Internal doors and EN 14221
windows
2 Up to about 18 % Products sheltered from EN 14220
rain (External doors,
windows)
b
3
Above 18 % External doors or EN 14220
windows
a
Moisture content known to occur in service under conditions of constant relative humidity and temperature.
b
At least some weeks yearly.
The same requirements apply to wood intended for finger jointing of the lamellae. Moisture content
measurements made with calibrated resistance moisture meters are considered satisfactory.
The moisture content of any piece or parcel shall be estimated using the method described in EN 13183-2 or
EN 13183-3. In the case of a dispute the method to be used shall be the method described in EN 13183-1
(this method is a destructive method).
The method of measuring average moisture content is given in EN 14298.
NOTE See Annex B for practical application recommendations.
4.2 Adhesive
The selected adhesive shall be capable of producing strong and durable joints so that the integrity of the bond
is maintained throughout the life of the product. The minimum adhesive requirements for each of the service
classes for adhesives are given in Annex A.
5 Manufacturing
The manufacturing process is critical for the production of laminated and finger jointed products.
Manufacturing recommendations are provided in Annex B.
6 Sampling and testing
6.1 General
In order to ensure the integrity of the glueline of glued laminated and/or finger jointed blanks a representative
sample of the product shall be tested during production (FPC). The number of samples to be selected is
related to the type of test.
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6.2 Initial type testing
The tests, size of test pieces and sample size required at the ITT stage are set out in Table 2. Test pieces
shall be taken at least 50 mm from the end of a sampled profile. The sampling requirements are per profile
type.
Table 2 — ITT sampling requirements for laminated glue line and finger tests
ITT Sampling
Laminated profile
Test Size of test piece Sample size
Moisture resistance 60 samples by selecting 30
Length – (50 ± 1) mm;
(Delamination and shear gluelines from at least 15 profiles,
Width – width of profile but ≤ 50 mm;
strength tests) (see 9.1.2 and on each glue line two test pieces
Thickness – overall of laminated
9.2) are cut to make two test batches.
profile.
If the width of the profile exceeds 50 mm, the glue line test pieces shall be
cut at random along the width of the profile (or length of the glue line along
the cross section).
Finger Joints
a
Test Size of test piece
Sample size
Bending (see 10.1) Length – 15 x thickness; 30 samples with a finger joint and
30 without.
Width – width of profile but ≤ 100 mm;
Thickness – overall of piece.
Moisture resistance 30 finger joints sampled with two
b
(bending); (only for Service Thickness – 5 mm to 6 mm. test pieces created at each finger
Class 3) joint (one for each face).
Watertightness (only for Length – 10 x length of fingers; 15 samples with a finger joint.
Service Class 3) (see 10.2) Width – width of profile;
c
Thickness – actual but ≤ 25 mm.
a
The finger joint shall be in the centre of the length of the sample. Profiles without finger joints shall be defect free.
b
Thicker lamellas may be used provided the lamellas are fully wetted at the end of the immersion period.
c
Any extra thickness being sawn or planed from one face.
Finger joint testing is only necessary where the finger jointed lamella(s) are to be visible on the weather
exposed faces of the profiles and/or are more than 80 % of the total thickness of the profile.
Where a laminated profile includes laminates with finger joints those finger jointed lamellas shall be sampled
and tested before assembly into the laminated profile.
6.3 Factory production control tests
6.3.1 Sampling
The tests, size of test pieces and sample size required during Factory Production Control (FPC) are set out in
Table 3.
The number of profiles to be sampled, per property to be tested shall be related to the size of the production
but shall be at least two profiles per type and per production shift.
For each test method, the length of the profile shall be consistent across all test pieces specified for a glue
line.
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Table 3 — FPC sampling requirements for laminated glue lines and finger joints tests
FPC Sampling
Laminated profile
Test Size of test piece Sample size
a
Chisel test (see 9.3) Two test pieces per profile type.
Length – (50 ± 1) mm;
Width – width of profile;
Thickness – overall of laminated
profile.
a
Penetration test Two or more adjacent test pieces
Length – (50 ± 1) mm;
Width – width of profile; cut 150 mm from the end of the
selected profile.
Thickness – overall of laminated
profile.
Moisture resistance in Two test pieces per profile type.
Length – (50 ± 1) mm;
relation to the service class
Width – width of profile type but
b
(8.3) (Delamination and
≤ 50 mm;
shear strength tests)
Thickness – overall of laminated
profile.
Finger Joints
Test Size of test piece Sample size
Bending Length – 15 x thickness; At least one per profile type, up to
Alternative: three-point 30.
Width – width of profile but ≤ 100 mm;
bending
Thickness – overall of piece.
Tension Not necessary Not necessary
c
Iodine test Width – width of profile; In beginning of shift.
Thickness – actual.
c
Penetration test (Coloured Length – 150 mm;
In beginning of shift.
a
Water test) Width – Width of profile;
Thickness – actual.
a
Alternative testing procedures according to the manufacturer’s preference.
b
If the width of the profile exceeds 50 mm, the glue line test pieces shall be cut at random along the width of the profile (or length of
the glue line along the cross section).
c
The tightness of the finger joints shall be checked regularly during the production process, at least on five finger joints at the
beginning of the production shift and in case of changing settings of the machinery.
7 Testing requirements
7.1 Conditioning chambers
Air conditioning equipment capable of achieving and maintaining the various climatic conditions given in
Table 4.
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Table 4 — Air conditioning chamber requirements
Air conditioning chamber requirements
Climate classification Air temperature and Relative Humidity
conditions
Air temperature Relative Humidity
Reference climate
(20 ± 2) °C (65 ± 5) %
Dry standard climate
(23 ± 2) °C (50 ± 5) %
Humid climate
(23 ± 2) °C (85 ± 5) %
Dry climate
(23 ± 2) °C (30 ± 5) %
Hot climate A ventilated chamber with air
at (50 ± 2) °C.
The rate of ventilation is (25 ± 5)
times per hour.
7.2 Water tank
For Service Class 2: Water container shall be of sufficient size to take one or more of the test samples with
heating element capable of providing a variable, controlled water temperature of (20 ± 1) °C and further
heating its content from 20 °C to (60 ± 2) °C within one hour and keeping it at this temperature.
For Service Class 3: The water container shall maintain a temperature of (20 ± 5) °C.
The tank shall be able to hold sufficient water to cover the test pieces.
7.3 Loading machine
The loading machine shall comprise a loading head and suitable attachments able to carry out the following
functions.
a) The velocity and load accuracy of the loading head shall be capable of giving consistent results.
NOTE A velocity of the loading head capable of reaching the maximum load on a test piece in (60 ± 30) s and
capable of an accuracy of 1 % on the applied loads is assumed to be suitable.
b) Carry out a bending test using two pairs of rollers of 30 mm diameter with a length exceeding the width of
the test pieces. The span between the rollers shall be adjustable to six times the thickness of the test
piece for the central pair of rollers and 18 times the thickness for outer rollers.
c) If necessary it shall be capable of receiving attachments for the shear test. Suitable devices are defined in
EN 392 or in EN 13354.
d) If necessary it shall be capable of receiving a pair of grips fitted to the loading head to enable the tension
test to be carried out.
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For Factory Production Control purposes test results from simple machines or test processes are acceptable if
correlated to the ITT test results.
7.4 Ancillary equipment
The following ancillary equipment is also required:
a) Tape measure accurate to 1 mm;
b) Callipers or gauge accurate to 1/10 mm;
c) Scales accurate to 0,1 g;
d) A feeler gauge of 0,2 mm x 10 mm in width and at least 65 mm in length.
Additional equipment to be used during FPC:
e) Either a 50 mm steel chisel or steel wedge;
f) A hammer or mallet;
g) Iodine solution in mixture ratio 1:30.
Penetration fluid: Water/alcohol mixture at a ratio of 1:1 with one drop of detergent per 100 ml and suitable
colouring agent which will provide a strong contrast to the colour of the glueline and the wood (e.g. a suitable
colouring agent would be E122).
Brush: Approximately 20 mm wide paint
...
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