EN 438-2:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dekorative Hochdruck-Schichtpressstoffplatten (HPL) - Platten auf Basis härtbarer Harze (Schichtpressstoffe) - Teil 2: Bestimmung der EigenschaftenStratifiés décoratifs haute pression (HPL) - Plaques a base de résines thermodurcissables (communément appelées stratifiés) - Partie 2 : Détermination des caractéristiquesHigh-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (usually called Laminates) - Part 2: Determination of properties83.140.20Laminated sheetsICS:Ta slovenski standard je istoveten z:EN 438-2:2005SIST EN 438-2:2005en01-maj-2005SIST EN 438-2:2005SLOVENSKI
STANDARDSIST EN 438-2:19991DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 438-2
January 2005 ICS 83.140.20
Supersedes EN 438-2:1991
English version
High-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (usually called Laminates) - Part 2: Determination of properties
Stratifiés décoratifs haute pression (HPL) - Plaques à base de résines thermodurcissables (communément appelées stratifiés) - Partie 2 : Détermination des caractéristiques
Dekorative Hochdruck-Schichtpressstoffplatten (HPL) - Platten auf Basis härtbarer Harze (Schichtpressstoffe) - Teil 2: Bestimmung der Eigenschaften This European Standard was approved by CEN on 10 December 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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 © 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 438-2:2005: ESIST EN 438-2:2005

Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.5 4 Assessment of appearance.5 5 Determination of thickness.6 6 Determination of length and width.6 7 Determination of edge straightness.7 8 Determination of edge squareness.8 9 Determination of flatness.10 10 Resistance to surface wear.11 11 Resistance to abrasion (flooring grade laminates).13 12 Resistance to immersion in boiling water.16 13 Substrate protection against water vapour.18 14 Resistance to water vapour.19 15 Resistance to wet conditions (Exterior grade laminates).21 16 Resistance to dry heat.23 17 Dimensional stability at elevated temperature.25 18 Dimensional stability at ambient temperature.26 19 Resistance to climatic shock (exterior grade laminates).27 20 Resistance to impact by small-diameter ball.29 21 Resistance to impact by large diameter ball.33 22 Resistance to impact by large diameter ball (flooring grade laminates).37 23 Resistance to cracking under stress (laminates ≤≤≤≤ 2 mm thick).39 24 Resistance to crazing (Compact laminates).43 25 Resistance to scratching.44 26 Resistance to staining.50 27 Lightfastness (xenon arc).53 28 Resistance to UV light (Exterior grade laminates).55 29 Resistance to artificial weathering (Exterior grade laminates).56 30 Resistance to cigarette burns.59 31 Formability (Method A).60 32 Formability (Method B).63 33 Resistance to blistering (Method A).67 34 Resistance to blistering (Method B).68 Bibliography.70
1 Scope This part of EN 438 specifies the methods of test for determination of the properties of high-pressure decorative laminates as defined in Clause 3. These methods are primarily intended for testing the sheets specified in EN 438-3, 4, 5 and 6.
The precision of the test methods specified in Clauses 5, 6, 7, 8, 9, 12, 17, 18, 32 and 33 of this part of EN 438 is not known because inter-laboratory data are not available.
When inter-laboratory data are obtained, precision statements will be added to the test methods at the following revision. As all the other test methods have an end point determination based on subjective judgement, it is not meaningful to make a statement of precision in these cases. 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 312, Particleboards — Specifications EN 316, Wood fibreboards — Definition, classification and symbols EN 20105-A02, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour (ISO 105-A02:1993) EN ISO 62, Plastics — Determination of water absorption (ISO 62:1999) EN ISO 105-B02, Textiles — Tests for colour fastness — Part B02: Colour fastness to artificial light: Xenon arc fading lamp test (ISO 105-B02:1994, including amendment 1:1998) EN ISO 178, Plastics - Determination of flexural properties (ISO 178:2001) EN ISO 291, Plastics — Standard atmospheres for conditioning and testing (ISO 291:1995) EN ISO 4892-1, Plastics - Methods of exposure to laboratory light sources - Part 1: General guidance (ISO 4892-1:1999). EN ISO 4892-2:1999, Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc sources (ISO 4892-2:1994). EN ISO 4892-3, Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 4892-3:1994). EN ISO 6506-1, Metallic materials — Brinell hardness test - Part 1: Test method (ISO 6506-1:1999) ISO 9352, Plastics — Determination of resistance to wear by abrasive wheels ISO 9370, Plastics — Instrumental determination of radiant exposure in weathering tests —
General guidance and basic test method SIST EN 438-2:2005

3 Terms and definitions For the purposes of this document, the following term and definition applies:
3.1 high-pressure decorative laminate(s) (HPL) sheet(s) consisting of layers of cellulosic fibrous material (normally paper) impregnated with thermosetting resins and bonded together by the high pressure process described below The high pressure process is defined as the simultaneous application of heat (temperature ≥ 120 °C) and high specific pressure (≥ 5 MPa), to provide flowing and subsequent curing of the thermosetting resins to obtain a homogeneous non-porous material with increased density (≥ 1,35 g/cm³), and with the required surface finish. 4 Assessment of appearance 4.1 Principle Laminates shall be inspected for surface appearance under standardised conditions of lighting and viewing. 4.2 Apparatus 4.2.1 Horizontal inspection table, of height approximately 700 mm and large enough to accommodate the largest sheets to be inspected. 4.2.2 Overhead white fluorescent lights, of colour temperature approximately 5000 K and giving an intensity of 800 to 1000 lux over the whole area of the largest sheets to be inspected. A convenient distance of the lights from the inspection table is approximately 1,5 m. 4.3 Test specimen The specimen shall be the laminate under test, as supplied by the manufacturer. 4.4 Procedure Place the laminate, decorative face uppermost, on the inspection table. Wipe it free of any loose contamination with a soft cloth, using a suitable cleaning agent if necessary. Inspect it from the distance required by the relevant part of EN 438 for defects such as smudges, smears, fingerprints, scratches, foreign particles, damage or any other form of blemish evident within the decorative surface. The inspector shall use normal vision, corrected if necessary. 4.5 Test report The test report shall include the following information: a) reference to this part of EN 438; b) name, type and nominal thickness of the product; c) size of the laminate under test; d) viewing distance; e) total area of spot-type defects in square millimetres; f) total length of hair-like defects in millimetres;
g) any deviation from the specified test method; SIST EN 438-2:2005
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