SIST-TS CEN/TS 15534-1:2007
(Main)Wood-plastics composites (WPC) - Part 1: Test methods for characterisation of WPC materials and products
Wood-plastics composites (WPC) - Part 1: Test methods for characterisation of WPC materials and products
This Technical specification specifies test methods and their relevant parameters and test conditions to be used in determining selected properties of wood-plastics composites, usually called WPC, materials and products. It is applicable to cellular or non-cellular WPC materials processed through plastics processing techniques, as defined in Clause 3.
The properties have been selected from the test methods usually used in the plastics and wood fields.
These test methods are primarily intended to be used for the characterisation of WPC materials (see CEN/TS 15534-2 [1]) and WPC products (see CEN/TS 15534-3 [2]).
NOTE This document may be revised when other parts of CEN/TS 15534 are being amended or added.
The purpose of this document is to provide test methods to assess a wide range of performance characteristics for WPC materials and products. But, all the characteristics listed in this part of CEN/TS 15534 are not necessarily to be assessed for a given application.
This Technical Specification takes into account the current state of the art and is intended to be used by WPC material suppliers and converters. No limitation has been introduced for the content of cellulosic materials.
Holz-Polymer-Werkstoffe (WPC) - Teil 1: Prüfverfahren für die Beschreibung von WPC-Werkstoffen und -Erzeugnissen
Diese Technische Spezifikation legt Prüfverfahren und die jeweiligen Parameter sowie die Prüfbedingungen fest, die zur Bestimmung der Eigenschaften von Werkstoffen und Erzeugnissen aus Holz-Kunststoff-Verbund¬stoffen, üblicherweise WPC genannt, angewendet werden. Sie gilt für verschäumte oder nicht ver¬schäumte Holz-Kunststoff-Verbundstoffe, die durch Verarbeitungsverfahren für Kunststoffe nach Abschnitt 3 hergestellt werden.
Die Eigenschaften wurden anhand der Prüfverfahren gewählt, die üblicherweise im Kunststoff- und Holzbereich angewendet werden.
Diese Prüfverfahren sind in erster Linie für die Beschreibung von WPC-Werkstoffen (siehe prEN/TC 15534-2) und WPC-Erzeugnissen (siehe prEN/TS 15534-3) vorgesehen.
ANMERKUNG Dieses Dokument kann überarbeitet werden, wenn andere Teile von prEN/TS 15534 geändert oder hinzugefügt werden.
Zweck dieses Dokumentes ist die Festlegung von Prüfverfahren zur Bewertung einer Vielzahl von Leistungs¬merkmalen für Werkstoffe und Erzeugnisse aus WPC. Jedoch müssen für einen gegebenen Anwendungsfall nicht notwendigerweise alle in diesem Teil von prCEN/TS 15534 aufgeführten Eigenschaften bewertet werden.
Diese Technische Spezifikation trägt dem aktuellen Stand der Technik Rechnung und sie ist für die Anwendung durch Lieferer und Verarbeiter von WPC-Werkstoffen vorgesehen. Es wird keine Beschränkung für den Zellstoffgehalt angegeben.
Composites bois-plastiques (WPC) - Partie 1 : Méthodes d'essai pour la caractérisation des matériaux WPC et des produits en WPC
La présente Spécification technique spécifie les méthodes d'essai, leurs parametres respectifs et les
conditions d'essai a utiliser pour la détermination des propriétés des matériaux et produits en composites
bois-plastiques, généralement appelés WPC. Elle s?applique aux matériaux WPC expansés et non expansés
fabriqués au moyen des techniques de transformation des plastiques, tel que défini a l'Article 3.
Les propriétés ont été déterminées sur la base des méthodes d'essai généralement utilisées dans le domaine
du plastique et du bois.
Ces méthodes d'essai sont principalement destinées a la caractérisation des matériaux WPC
(voir prCEN/TS 15534-2) et des produits en WPC (voir prCEN/TS 15534-3).
NOTE Le présent document est susceptible de révision apres amendement ou adjonction d'autres parties de
la prCEN/TS 15534.
L'objectif de ce document consiste a fournir des méthodes d'essai permettant d'évaluer un large éventail de
caractéristiques de performance des matériaux WPC et produits en WPC. Il n'est cependant pas
nécessairement requis pour une application donnée d'évaluer toutes les caractéristiques listées dans la
présente partie de la prCEN/TS 15534.
La présente Spécification technique tient compte de l'état de l'art actuel et est destinée aux fournisseurs et
aux transformateurs de matériaux WPC. Aucune limitation n'a été introduite concernant la teneur en matieres
cellulosiques.
Lesno-polimerni kompoziti (WPV) - 1. del: Preskusne metode za karakterizacijo WPC materialov in proizvodov
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TS CEN/TS 15534-1:2007
01-september-2007
Lesno-polimerni kompoziti (WPV) - 1. del: Preskusne metode za karakterizacijo
WPC materialov in proizvodov
Wood-plastics composites (WPC) - Part 1: Test methods for characterisation of WPC
materials and products
Holz-Polymer-Werkstoffe (WPC) - Teil 1: Prüfverfahren für die Beschreibung von WPC-
Werkstoffen und -Erzeugnissen
Composites bois-plastiques (WPC) - Partie 1 : Méthodes d'essai pour la caractérisation
des matériaux WPC et des produits en WPC
Ta slovenski standard je istoveten z: CEN/TS 15534-1:2007
ICS:
79.060.01 /HVQHSORãþHQDVSORãQR Wood-based panels in
general
SIST-TS CEN/TS 15534-1:2007 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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TECHNICAL SPECIFICATION
CEN/TS 15534-1
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
May 2007
ICS 79.060.01
English Version
Wood-plastics composites (WPC) - Part 1: Test methods for
characterisation of WPC materials and products
Composites bois-plastiques (WPC) - Partie 1 : Méthodes Holz-Polymer-Werkstoffe (WPC) - Teil 1: Prüfverfahren für
d'essai pour la caractérisation des matériaux WPC et des die Beschreibung von WPC-Werkstoffen und -
produits en WPC Erzeugnissen
This Technical Specification (CEN/TS) was approved by CEN on 29 December 2006 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: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15534-1:2007: E
worldwide for CEN national Members.
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CEN/TS 15534-1:2007 (E)
Contents Page
Foreword.4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .8
4 Test specimens.8
5 Conditioning.9
6 Physical properties.9
6.1 Density .9
6.2 Moisture content.9
6.3 Heat deflection temperature (HDT) .10
6.4 Coefficient of friction.10
7 Mechanical properties.10
7.1 Impact resistance.10
7.1.1 Flexural impact.10
7.1.2 Falling mass impact .10
7.1.3 Puncture impact.11
7.2 Tensile properties.11
7.3 Flexural properties.11
7.3.1 Materials .11
7.3.2 Non-load bearing products.11
7.3.3 Load bearing products.11
7.4 Creep behaviour.12
7.4.1 Materials .12
7.4.2 Products .12
7.5 Resistance to indentation (Brinell hardness) .12
7.6 Nail and screw withdrawal .12
7.7 Pull through resistance.12
8 Durability .13
8.1 Resistance to artificial weathering.13
8.1.1 Xenon-arc sources.13
8.1.2 Fluorescent UV lamps for coated WPC products.14
8.1.3 Other test methods.14
8.2 Resistance to natural ageing.14
8.3 Swelling and water absorption.14
8.4 Dimensional changes (changes in relative humidity of air).14
8.5 Moisture resistance .15
8.5.1 Under cyclic conditions .15
8.5.2 Closed environment at elevated temperature.15
8.6 Resistance against biological agents.15
8.6.1 Ageing procedure .15
8.6.2 Resistance against termites .16
8.6.3 Resistance against wood decaying and staining fungi and micro-organisms .16
9 Thermal properties .17
9.1 Linear thermal expansion .17
9.2 Heat reversion.17
9.3 Heat build-up.18
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CEN/TS 15534-1:2007 (E)
10 Burning behaviour.18
10.1 Limit oxygen index (LOI).18
10.2 Reaction to fire .18
10.2.1 Single flame source test .18
10.2.2 Single burning item (SBI) test .18
10.2.3 Radiant heat source test (for floorings).18
11 Other properties .19
11.1 Degree of chalking .19
11.2 Change of gloss.19
11.3 Peel strength resistance.19
12 Summary of the properties and relevant test methods.20
Bibliography.41
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CEN/TS 15534-1:2007 (E)
Foreword
This document (CEN/TS 15534-1:2007) has been prepared by Technical Committee CEN/TC 249 “Plastics”,
the secretariat of which is held by NBN.
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.
CEN/TS 15534 consists of the following parts, under the general title Wood-plastics composites (WPC):
Part 1: Test methods for characterisation of WPC materials and products
Part 2: Characterisation of WPC materials
Part 3: Characterisation of WPC products.
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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CEN/TS 15534-1:2007 (E)
Introduction
The denomination “wood-plastics composites”, WPC, is usually used to designate materials or products made
of one or more natural fibres or flours and a polymer or a mixture of polymers. Natural fibres and flours come
from different vegetable sources (e.g. wood, hemp, sisal, jute, kenaf, rice) and all kind of polymers (virgin or
recycled) can be used but currently the most common ones are poly(vinyl chloride) PVC, polypropylene (PP)
and polyethylene (PE).
WPC materials can be considered neither as filled plastics nor as a special kind of wood. They should be
considered as a different material having their own characteristics.
The main applications of WPC products are at present decking, siding, cladding, panelling and fencing
furniture. WPC materials can be processed by different techniques, as extruding for profiles and pipes,
calendering for films and sheets or injection moulding. The contents of natural fibres and polymers depend on
the application and the processing techniques.
As the market of WPC materials and products is currently growing in Europe, there is a lack of harmonisation
for the test methods needed to characterise WPC materials and products and for the specifications they
should comply with. Up to now, each branch of industry has its own practice and used its own test methods. In
this context, a European Technical Specification seemed to be the best choice to increase the experience and
knowledge in order to guarantee that quality products in this new market. The status of Technical Specification
has also been chosen because the WPC materials and products and their characteristics are not sufficiently
known for the time being.
It consists of the following parts:
Part 1: to identify the test methods and their relevant parameters and test conditions to be used for the
determination of the characteristics of WPC materials and products;
Part 2: to identify the required and optional properties of WPC materials;
Part 3: to identify the required and optional properties of WPC products.
This Technical Specification may be transformed into a European Standard after several years when the state
of the art will be better known and stabilized.
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CEN/TS 15534-1:2007 (E)
1 Scope
This Technical Specification specifies test methods and their relevant parameters and test conditions to be
used in determining selected properties of wood-plastics composites, usually called WPC, materials and
products. It is applicable to cellular or non-cellular WPC materials processed through plastics processing
techniques, as defined in Clause 3.
The properties have been selected from the test methods usually used in the plastics and wood fields.
These test methods are primarily intended to be used for the characterisation of WPC materials (see CEN/TS
[1] [2]
15534-2 ) and WPC products (see CEN/TS 15534-3 ).
NOTE This document may be revised when other parts of CEN/TS 15534 are being amended or added.
The purpose of this document is to provide test methods to assess a wide range of performance
characteristics for WPC materials and products. But, all the characteristics listed in this part of CEN/TS 15534
are not necessarily to be assessed for a given application.
This Technical Specification takes into account the current state of the art and is intended to be used by WPC
material suppliers and converters. No limitation has been introduced for the content of cellulosic materials.
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 117:2005, Wood preservatives — Determination of toxic values against Reticulitermes species (European
termites) (laboratory method)
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 318, Wood-based panels — Determination of dimensional changes associated with changes in relative
humidity
EN 321, Wood based panels — Determination of moisture resistance under cyclic test conditions
EN 477:1995, Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors —
Determination of the resistance to impact of main profiles by falling mass
EN 479, Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors —
Determination of heat reversion
EN 789:2004, Timber structures — Test methods — Determination of mechanical properties of wood based
panels
EN 927-6, Paints and varnishes — Coating materials and coating systems for exterior wood — Part 6:
Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water
ENV 1156, Wood-based panels — Determination of duration of load and creep factors
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CEN/TS 15534-1:2007 (E)
EN 1383, Timber structures — Test methods — Pull through resistance of timber fasteners
EN 1534, Wood and parquet flooring — Determination of resistance to indentation (Brinell) — Test method
ENV 12038:2002, Durability of wood and wood-based products — Wood-based panels — Method of test for
determining the resistance against wood-destroying basidiomycetes
EN 13446, Wood-based panels — Determination of withdrawal capacity of fasteners
EN 13823, Reaction to fire tests for building products — Building products excluding floorings exposed to the
thermal attack by a single burning item
EN 13893, Resilient, laminate and textile floor coverings — Measurement of dynamic coefficient of friction on
dry floor surfaces
CEN/TS 15083-2:2005, Durability of wood and wood-based products — Determination of the natural durability
of solid wood against wood-destroying fungi, test methods — Part 2: Soft rotting micro-fungi
prEN 15458, Paints and varnishes — Laboratory method for testing the efficacy of film preservatives in a
coating against algae
EN 20105-A03, Textiles — Tests for colour fastness — Part A03: Grey scale for assessing staining (ISO 105-
A03:1993)
EN ISO 75-1, Plastics — Determination of temperature of deflection under load — Part 1: General testing
conditions (ISO 75-1:2004)
EN ISO 75-2, Plastics — Determination of temperature of deflection under load — Part 2: Plastics, ebonite
and long-fibre-reinforced composites (ISO 75-2:2004)
EN ISO 178, Plastics — Determination of flexural properties (ISO 178:2001)
EN ISO 179-1, Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented impact test
(ISO 179-1:2000)
EN ISO 291, Plastics —Standard atmospheres for conditioning and testing (ISO 291:2005)
EN ISO 472:2001, Plastics — Vocabulary (ISO 472:1999)
EN ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1:1993
including Corr 1:1994)
EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2:1993 including Corr 1:1994)
EN ISO 877, Plastics — Methods for exposure to direct weathering, to weathering using glass-filtered daylight,
and to intensified weathering by daylight using Fresnel mirrors (ISO 877:1994)
EN ISO 899-2, Plastics — Determination of creep behaviour — Part 2: Flexural creep by three-point loading
(ISO 899-2:2003)
EN ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion
method, liquid pyknometer method and titration method (ISO 1183-1:2004)
EN ISO 1183-3, Plastics — Methods for determining the density of non-cellular plastics — Part 3: Gas
pyknometer method (ISO 1183-3:1999)
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CEN/TS 15534-1:2007 (E)
EN ISO 2813, Paints and varnishes -- Determination of specular gloss of non-metallic paint films at 20°, 60°
and 85° (ISO 2813:1994, including Technical Corrigendum 1:1997)
EN ISO 4589-2, Plastics — Determination of burning behaviour by oxygen index — Part 2: Ambient-
temperature test (ISO 4589-2:1996)
EN ISO 4628-6, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and
size of defects, and of intensity of uniform changes in appearance — Part 6: Assessment of degree of
chalking by tape method (ISO 4628-6:2006)
EN ISO 4892-1, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance
(ISO 4892-1:1999)
EN ISO 4892-2, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
(ISO 4892-2:2006)
EN ISO 6603-2, Plastics — Determination of puncture impact behaviour of rigid plastics — Part 2:
Instrumented puncture test (ISO 6603-2:2000)
EN ISO 9142:2003, Adhesives — Guide to the selection of standard laboratory ageing conditions for testing
bonded joints (ISO 9142:2003)
EN ISO 9239-1, Reaction to fire tests for floorings — Part 1: Determination of the burning behaviour using a
radiant heat source (ISO 9239-1:2002)
EN ISO 11925-2, Reaction to fire tests — Ignitability of building products subjected to direct impingement of
flame — Part 2: Single-flame source test (ISO 11925-2:2002)
ISO 7724-1, Paints and varnishes — Colorimetry — Part 1: Principles
ISO 7724-2, Paints and varnishes — Colorimetry — Part 2: Colour measurement
ISO 7724-3, Paints and varnishes — Colorimetry — Part 3: Calculation of colour differences
ISO 11359-2, Plastics — Thermomechanical analysis (TMA) — Part 2: Determination of coefficient of linear
thermal expansion and glass transition temperature
ISO 16869, Plastics — Assessment of the effectiveness of fungistatic compounds in plastics formulations
ISO 16979:2003, Wood-based panels — Determination of moisture content
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in EN ISO 472:2001 and the
following apply.
3.1
wood-plastics composite, WPC
material or product made thereof being the result of the combination of one or several cellulosic materials with
one or several thermoplastics and being or to be processed through plastic processing techniques
4 Test specimens
Unless otherwise specified in the relevant test method, the test specimens shall be prepared by sawing,
milling or sanding (grade 120 or grade 240) on all surfaces and their finished dimensions shall be 50 mm x 50
mm x 4 mm.
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CEN/TS 15534-1:2007 (E)
For cellular WPC products, the thickness of the test specimens shall be the actual thickness of the samples
from which they are prepared and shall be declared in the test report.
5 Conditioning
Unless otherwise specified in the relevant test method, the test specimens used for the determination of the
material and product characteristics shall be conditioned during at least 24 h in the standard atmosphere
23/50 (23 °C, relative humidity 50 %) in accordance with EN ISO 291.
6 Physical properties
6.1 Density
The density of non-cellular WPC materials can be measured according to:
EN ISO 1183-1: This part of EN ISO 1183 specifies three methods for the determination of the density of
non-cellular plastics in the form of void-free moulded or extruded objects, as well as powders, flakes and
granules.
Method A: immersion method for solid plastics (except for powders) in void-free form. This method
consists of comparing the weight of the specimen in air and immerged in a liquid of specified density.
The density of the specimen is calculated using the Archimède principle.
Method B: liquid pyknometer method, for particles, powders, flakes, granules or small pieces of
finished parts. This method consists of comparing the weight of the pyknometer full of immersion
liquid and the pyknometer full with specimen and immersion liquid. The density of the specimen is
calculated using the Archimède principle.
Method C: titration method, for plastics in any void-free form. This method consists of mixing two
miscible liquids of different density, one lighter, the other heavier than specimen and to estimate the
density of the mixture where the specimen stays in suspension.
EN ISO 1183-3: Gas pyknometer method. The volume of a specimen of known apparent mass is
determined by measuring the change of gas volume within a pyknometer upon introducing the specimen.
The volume change may be obtained either directly by means of a movable piston or indirectly by
measuring the change of the pressure within the pyknometer and calculating the volume using
In order to avoid problems with liquid absorption by WPC materials, EN ISO 1183-3 is recommended.
Density for cellular WPC materials can be measured according to EN ISO 1183-3. This method consists of
measuring the volume and the mass of the sample and calculating the mass per unit volume of the sample.
6.2 Moisture content
ISO 16979 describes a test method for determining the moisture content of wood-based panels by weighing
the loss of mass of each test piece between its state at the time of sampling and its state after drying to
constant mass at (103 ± 2) °C, and calculation of this loss of mass as a percentage of the mass of the test
piece after drying.
Constant mass is considered to be reached when the results of two successive weighing operations, carried
out at a minimum interval of 24 h, do not differ by more than 0,1 % of the mass of the test pieces.
[3]
NOTE ISO 16979:2003 is based on EN 322 .
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CEN/TS 15534-1:2007 (E)
6.3 Heat deflection temperature (HDT)
EN ISO 75-1 gives a general test method for the determination of the temperature of deflection under load
(flexural stress under three-point loading) of plastics. In that method, a standard test specimen is subjected to
three-point bending under a constant load to produce stresses in the specimen. The temperature is raised at a
uniform rate, and the temperature at which the standard deflection occurs measured.
EN ISO 75-2 describes three methods using different test loads and two specimen positions, edgewise and
flatwise as follows:
Method A using a flexural stress of 1,80 MPa;
Method B using a flexural stress of 0,45 MPa;
Method C using a flexural stress of 8,00 MPa.
6.4 Coefficient of friction
EN 13893 specifies the method for the determination of the dynamic coefficient of friction on dry floor surfaces.
Skates made of a specified material and having a specified form are loaded in order to give a specified force
to the floor. The loaded skates are pulled parallel to the surface of the floor at a specified constant speed. The
horizontal force required for the pulling is registered over a certain distance. The horizontal force is divided by
the vertical force to calculate the dynamic coefficient of friction.
NOTE Works are in progress in CEN/TC 339 for the preparation of test methods for the determination of the slip
resistance of pedestrian surfaces.
7 Mechanical properties
7.1 Impact resistance
7.1.1 Flexural impact
EN ISO 179-1 specifies a method for determining the Charpy impact strength of plastics under defined
conditions. A number of different types of methods are defined amongst which ISO 179-1/1fU is
recommended for the purpose of this Technical Specification. Method ISO 179-1/1fU refers to a flat wise
impacted unnotched specimen.
The method is used to investigate the behaviour of specified types of specimen under the impact conditions
defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test
conditions. It may also be used for the determination of comparative data from similar types of material.
The test specimen, supported near its ends as a horizontal beam, is impacted by a single blow of a striker,
with the line of impact midway between the supports, and bent at a high, nominally constant, velocity.
7.1.2 Falling mass impact
EN 477 describes a test method for determining the resistance to impact of profiles, subjected to a blow from
a known height on the sight surface at a point mid-way between two supporting webs at a given temperature.
EN 477 can be used to determine the resistance to impact of non-cellular WPC products. The energy level
used and the test temperature shall be declared in the test report.
However, EN 477 is not applicable for determining the resistance to impact of profiles made of cellular
materials. In this case the test method given in Annex A shall be used.
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CEN/TS 15534-1:2007 (E)
7.1.3 Puncture impact
...
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