Light transmitting single skin profiled plastics sheets for internal and external roofs, walls and ceilings - Requirements and test methods

This European Standard specifies the requirements for light transmitting single skin profiled plastics sheets for internal and external walls, roofs and ceilings. It is applicable to single skin sheets which are used as a single layer or when assembled to form a multiple layer construction.
It also specifies the test methods and provides for the evaluation of conformity and marking of the sheets.

Lichtdurchlässige, einschalige profilierte Platten aus Kunststoff für Innen- und Außenanwendungen an Dächern, Wänden und Decken - Anforderungen und Prüfverfahren

Diese Europäische Norm legt die Anforderungen an lichtdurchlässige, einschalige, profilierte Platten aus Kunststoff für Innen- und Außenanwendungen an Wänden, Dächern und Decken fest. Es ist anwendbar auf einschalige Platten, die als eine Lage oder zum Herstellen eines mehrlagigen Aufbaus verwendet werden.
Die Norm legt auch die Prüfverfahren fest und dient der Konformitätsbewertung und Kennzeichnung der Platten.

Plaques d'éclairement profilées, simple paroi, en matière plastique, pour toitures, bardages et plafonds intérieurs et extérieurs - Exigences et méthodes d'essai

La présente Norme européenne spécifie les exigences relatives aux plaques d'éclairement profilées, simple paroi, en matière plastique pour toitures, bardages et plafonds, intérieurs et extérieurs. Elle est applicable aux plaques simple paroi qui sont mise en œuvre sous forme d'une couche unique ou assemblées pour former une construction à plusieurs couches.
Elle spécifie également les méthodes d'essai ainsi que l'évaluation de la conformité et le marquage des plaques.

Prosojne enoslojne profilirane polimerne plošče za notranje in zunanje strehe, stene in stropove - Zahteve in preskusne metode

Ta evropski standard določa zahteve za prosojne enoslojne profilirane polimerne plošče za notranje in zunanje strehe, stene in stropove. Velja za enoslojne plošče, ki se uporabljajo kot posamezen sloj ali so zložene skupaj in tvorijo večslojno tvorbo. Določa tudi preskusne metode ter podaja vrednotenje skladnosti in označevanje plošč.

General Information

Status
Withdrawn
Publication Date
11-Dec-2012
Withdrawal Date
02-Dec-2014
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
03-Dec-2014

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lichtdurchlässige, einschalige profilierte Platten aus Kunststoff für Innen- und Außenanwendungen an Dächern, Wänden und Decken - Anforderungen und PrüfverfahrenPlaques d'éclairement profilées, simple paroi, en matière plastique, pour toitures, bardages et plafonds intérieurs et extérieurs - Exigences et méthodes d'essaiLight transmitting single skin profiled plastics sheets for internal and external roofs, walls and ceilings - Requirements and test methods91.060.20StreheRoofs91.060.30Stropi. Tla. StopniceCeilings. Floors. Stairs83.140.10Filmi in folijeFilms and sheets91.060.10Stene. Predelne stene. FasadeWalls. Partitions. FacadesICS:Ta slovenski standard je istoveten z:EN 1013:2012SIST EN 1013:2013en,fr,de01-marec-2013SIST EN 1013:2013SLOVENSKI

STANDARDSIST EN 1013-4:2000SIST EN 1013-5:2000SIST EN 1013-3:1998SIST EN 1013-1:1998SIST EN 1013-2:20001DGRPHãþD

SIST EN 1013:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1013

December 2012 ICS 83.140.10; 91.060.01 Supersedes EN 1013-1:1997, EN 1013-2:1998, EN 1013-3:1997, EN 1013-4:2000, EN 1013-5:2000English Version

Light transmitting single skin profiled plastics sheets for internal and external roofs, walls and ceilings - Requirements and test methods

Plaques d'éclairement profilées, simple paroi, en matière plastique, pour toitures, bardages et plafonds intérieurs et extérieurs - Exigences et méthodes d'essai

Lichtdurchlässige, einschalige profilierte Platten aus Kunststoff für Innen- und Außenanwendungen an Dächern, Wänden und Decken - Anforderungen und Prüfverfahren This European Standard was approved by CEN on 20 October 2012.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1013:2012: ESIST EN 1013:2013

EN 1013:2012 (E) 2 Contents Page Foreword ..............................................................................................................................................................4Introduction .........................................................................................................................................................51 Scope ......................................................................................................................................................62 Normative references ............................................................................................................................63 Terms and definitions ...........................................................................................................................74 Symbols and abbreviations ..................................................................................................................74.1 Symbols ..................................................................................................................................................74.2 Abbreviations .........................................................................................................................................85 Requirements .........................................................................................................................................85.1 Visual appearance .................................................................................................................................85.2 Dimensional tolerances and mass per square metre ........................................................................85.3 Light transmission .................................................................................................................................95.4 Flexural/tensile strength .......................................................................................................................95.5 Durability ............................................................................................................................................. 105.6 Thermal ageing resistance (only for thermoplastic sheets) .......................................................... 125.7 Longitudinal reversion and profile retention (only for thermoplastic sheets) ............................. 125.8 Impact resistance................................................................................................................................ 125.9 Resistance to deflection (mechanical resistance) .......................................................................... 135.10 Water vapour permeability ................................................................................................................. 135.11 Water/air permeability ........................................................................................................................ 135.12 Linear thermal expansion .................................................................................................................. 145.13 Reaction to fire .................................................................................................................................... 145.14 External fire performance .................................................................................................................. 145.15 Glass-fibre content (only for glass-fibre reinforced sheets) .......................................................... 155.16 Barcol hardness (only for glass-fibre reinforced sheets) .............................................................. 155.17 Presence of protective coating ......................................................................................................... 155.18 Adhesion of surface coating (only for glass-fibre reinforced sheets) .......................................... 165.19 Resistance to fixings .......................................................................................................................... 165.20 Dangerous substances ...................................................................................................................... 166 Test methods ....................................................................................................................................... 166.1 Dimensional tolerances ..................................................................................................................... 166.2 Light transmission .............................................................................................................................. 196.3 Yellowness index ................................................................................................................................ 206.4 Flexural/tensile strength .................................................................................................................... 206.5 Thermal ageing resistance ................................................................................................................ 216.6 Longitudinal reversion and profile retention ................................................................................... 226.7 Small hard body impact resistance .................................................................................................. 246.8 Resistance to deflection .................................................................................................................... 266.9 Reaction to fire .................................................................................................................................... 296.10 External fire performance .................................................................................................................. 316.11 Glass-fibre content ............................................................................................................................. 326.12 Barcol hardness .................................................................................................................................. 326.13 Presence of protective coating ......................................................................................................... 326.14 Adhesion of surface coating ............................................................................................................. 357 Evaluation of conformity .................................................................................................................... 367.1 General ................................................................................................................................................. 367.2 Initial type testing ............................................................................................................................... 367.3 Factory production control (FPC) ..................................................................................................... 388 Marking and labelling ......................................................................................................................... 41SIST EN 1013:2013

EN 1013:2012 (E) 3 Annex A (normative)

Profile terminology ....................................................................................................... 42A.1 Non-sinusoidal profiles ....................................................................................................................... 42A.2 Sinusoidal profile ................................................................................................................................ 43A.3 Minimum information to be declared ................................................................................................ 43Annex B (normative)

Glass content by density of laminate ......................................................................... 44B.1 Determination of density of laminate constituents .......................................................................... 44B.2 Test specimens .................................................................................................................................... 44B.3 Procedure ............................................................................................................................................. 44Annex ZA (informative)

Clauses of this European Standard addressing the provisions of the EU Construction Products Directive ....................................................................................................... 46ZA.1 Scope and relevant characteristics ................................................................................................... 46ZA.2 Procedures for the attestation of conformity of light transmitting single skin profiled plastics sheets ..................................................................................................................................... 48ZA.3 CE marking and labelling.................................................................................................................... 53Bibliography ...................................................................................................................................................... 58 SIST EN 1013:2013

EN 1013:2012 (E) 4 Foreword This document (EN 1013:2012) has been prepared by Technical Committee CEN/TC 128 “Roof covering products for discontinuous laying and products for wall cladding”, the secretariat of which is held by NBN. 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 June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. 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. This document supersedes EN 1013-1:1997, EN 1013-2:1998, EN 1013-3:1997, EN 1013-4:2000 and EN 1013-5:2000. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This revision is a merger of EN 1013-1:1997, EN 1013-2:1998, EN 1013-3:1997, EN 1013-4:2000 and EN 1013-5:2000. The main changes are as follows:

 a complete technical review of requirements and test methods, based on the essential characteristics given in Mandates M/121 and M/122;

 a technical review of the artificial ageing procedure based on the current test methods, with the possibility to use either the exposition to arc-xenon lamps or to fluorescence UV lamps;

 a technical review of the impact resistance of the sheets: in addition to the existing small hard body impact resistance, test methods for assessing the large soft body impact resistance have been added;

 introduction of new subclauses for the reaction to fire and external fire performance;

 a review of the flexural/tensile strength and the resistance to deflection;
 deletion of the hail resistance;

 introduction of a new clause dealing with evaluation of conformity;  introduction of an informative Annex ZA giving the clauses of this European Standard addressing the provisions of the EU Construction Products Directives. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1013:2013

EN 1013:2012 (E) 5 Introduction This document describes the requirements and test methods for light transmitting single skin profiled plastics sheets. The physical properties of light transmitting single skin profiled plastics sheets differ from bituminous, metal and fibre reinforced cement sheets, as defined in EN 534 [1], EN 506 [2], EN 508-1 [3], EN 508-2 [4],

EN 508-3 [5] and EN 494 [6]. They do not necessarily have the same span capabilities and alternative fixing specifications are generally required. Reference should be made to national regulations and the manufacturer's literature for requirements concerning design, storage and installation, including all safety aspects, according to the material. SIST EN 1013:2013

EN 1013:2012 (E) 6 1 Scope This European Standard specifies the requirements for light transmitting single skin profiled plastics sheets for internal and external walls, roofs and ceilings. It is applicable to single skin sheets which are used as a single layer or when assembled to form a multiple layer construction. It also specifies the test methods and provides for the evaluation of conformity and marking of the sheets. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 59, Glass reinforced plastics — Measurement of hardness by means of a Barcol impressor CEN/TS 1187:2012, Test methods for external fire exposure to roofs EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using data from reaction to fire tests EN 13501-5, Fire classification of construction products and building elements — Part 5: Classification using data from external fire exposure to roofs tests EN 13823:2010, Reaction to fire tests for building products — Building products excluding floorings exposed to the thermal attack by a single burning item EN ISO 178, Plastics — Determination of flexural properties (ISO 178) 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) EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2) EN ISO 527-4, Plastics — Determination of tensile properties — Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites (ISO 527-4) EN ISO 1043-1:2011, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special characteristics (ISO 1043-1:2011) EN ISO 1043-2:2011, Plastics — Symbols and abbreviated terms — Part 2: Fillers and reinforcing materials (ISO 1043-2:2011) EN ISO 1172:1998, Textile-glass-reinforced plastics — Prepregs, moulding compounds and laminates — Determination of the textile-glass and mineral-filler content — Calcination methods (ISO 1172:1996) EN ISO 4892-2:2006, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps (ISO 4892-2:2006) EN ISO 4892-3:2006, Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps (ISO 4892-3:2006) EN ISO 6603-1, Plastics — Determination of puncture impact behaviour of rigid plastics — Part 1: Non-instrumented impact testing (ISO 6603-1) SIST EN 1013:2013

EN 1013:2012 (E) 7 EN ISO 9001:2008, Quality management systems — Requirements (ISO 9001:2008) EN ISO 11664-1, Colorimetry — Part 1: CIE standard colorimetric observers (ISO 11664-1) EN ISO 11664-2:2011, Colorimetry — Part 2: CIE standard illuminants (ISO 11664-2:2007) EN ISO 11925-2:2010, Reaction to fire tests — Ignitability of products subjected to direct impingement of flame — Part 2: Single-flame source test (ISO 11925-2:2010) EN ISO 12572, Hygrothermal performance of building materials and products — Determination of water vapour transmission properties (ISO 12572) EN ISO 13468-1, Plastics — Determination of the total luminous transmittance of transparent materials — Part 1: Single-beam instrument (ISO 13468-1) EN ISO 13468-2, Plastics — Determination of the total luminous transmittance of transparent materials — Part 2: Double-beam instrument (ISO 13468-2) EN ISO 14125, Fibre-reinforced plastic composites — Determination of flexural properties (ISO 14125) ISO 11359-2, Plastics — Thermomechanical analysis (TMA) — Part 2: Determination of coefficient of linear thermal expansion and glass transition temperature

ETAG 010, Self supporting translucent roof kits 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 472:2001, EN ISO 1043-1:2011, EN ISO 1043-2:2011 and Annex A and the following apply. 3.1 indirect test (IT) test performed by the manufacturer, different from that specified for that particular characteristic, having verified its correlation with the specified test 3.2 yellowness deviation in chroma from whiteness or water-whiteness in the dominant wavelength range from 570 nm to 580 nm 3.3 yellowness index magnitude in yellowness relative to CIE standard illuminant D 65 3.4 radiant exposure H time integral of irradiance, measured in joules per square metre (J · m-2) [SOURCE: ISO 9370:1997] [7] 4 Symbols and abbreviations 4.1 Symbols An

class for the exposure to artificial accelerated weathering using xenon-arc lamps SIST EN 1013:2013

EN 1013:2012 (E) 8 Bn

class for the exposure to artificial accelerated weathering using fluorescent UV lamps H

radiant exposure YI
yellowness index of a test specimen exposed to ageing YI0
yellowness index of a test specimen unexposed to ageing ∆YI

change of the yellowness index after ageing 4.2 Abbreviations FPC factory production control GRA glass-fibre reinforced acrylic (PMMA) GRP glass-fibre reinforced polyester ITT

initial type testing PC
polycarbonate PET

poly(ethylene terephthalate) PMMA poly(methyl methacrylate) PVC-U unplasticised poly(vinyl chloride) PVF

poly(vinyl fluoride) 5 Requirements 5.1 Visual appearance Both sides of the sheets shall be of regular appearance. Visual or tactile examination shall reveal no evidence of any hole, cracking or splitting, and no cluster of bubbles greater than 1 mm in diameter, or inclusions that are likely to affect properties. For GRP sheets, any defects such as resin ribs, glass folds or glass knots shall not exceed 5 mm in diameter. The edges of the sheet shall be straight and clean. Further requirements concerning the visual aspects of the sheets can be agreed upon between the manufacturer and the customer. Where required, the sheet shall be declared as “diffusing” or “non-diffusing” depending on whether the image of an object placed 1 m behind the sheet appears blurred or sharp, respectively. 5.2 Dimensional tolerances and mass per square metre The dimensional tolerances and mass per square metre shall be assessed when subject to regulatory requirement. When measured in accordance with the test methods as specified in 6.1.1 to 6.1.3 and Table 1, the dimensional tolerances and mass per square metre of the sheets shall conform to the requirements given in Table 1. The test methods given in Table 1 are used for initial type testing, and are the reference test methods. Any other indirect test method may be chosen provided that it is sufficiently accurate to ensure that the dimensions SIST EN 1013:2013

EN 1013:2012 (E) 9 of the products meet the requirements of Table 1 and as far as a correlation is demonstrated with the concerned reference test method. Table 1 — Dimensional tolerances and mass per square metre requirements Characteristic Test method Requirement Sheet thickness 6.1.4 The nominal thickness of the profiled sheet shall be declared. The mean value of the thickness of the profiled sheet shall not vary by more than ± 10 % of this value. The sheet thickness at any point of a sheet including crown, trough and sides of corrugation shall not vary by more than ± 20 % from the declared nominal thickness of the profiled sheet. Mass per square metre

6.1.5 The mass per square metre of the material in flat form, prior to profiling, which is the reference value, shall be controlled and declared. The mean value of the mass per square metre shall not vary by more than ± 10 % of the declared nominal mass per square metre. The mass per linear metre of profiled sheet, which can be calculated from the mass per square metre of the material in flat form, may be also declared. Cover width

6.1.6 The measured cover width shall be within ± 0,8 % of the declared nominal cover width. Shape of the sheet profile 6.1.7 When it is intended that the profile of the sheets shall match the shape of a dissimilar material (e.g. metal or fibre cement), the shape of the profile shall match the nominal shape with a maximum tolerance (deviation) at any point of 4 mm. Sheet length 6.1.8 The sheet length shall be within the interval from:  0 mm to + 20 mm of the declared sheet length, for sheet length up to 2,5 m;

 0 % to + 0,8 % of the declared sheet length for sheet length greater than 2,5 m. Sheet straightness 6.1.9 The sheet straightness shall be less than or equal to 2,0 mm/m length. Squareness of a sheet 6.1.10 The out of squareness of a sheet shall be less than or equal to 0,5 % of the declared cover width.

5.3 Light transmission The total luminous transmittance shall be determined by testing five samples in accordance with 6.2 and calculating the mean value. The total luminous transmittance based on the mean value shall be declared and the mean value of subsequent measurements shall be within ± 5 % of the declared value. 5.4 Flexural/tensile strength The flexural/tensile strength shall be assessed when subject to regulatory requirement. The flexural strength and flexural modulus or the tensile strength and Young's modulus, as applicable, of the material of the sheets shall be measured in accordance with 6.4. SIST EN 1013:2013

EN 1013:2012 (E) 10 The flexural strength and flexural modulus or the tensile strength and Young's modulus, as applicable, based on the mean values, shall be declared and any subsequent measurement shall be a minimum of 80 % of the declared value. 5.5 Durability 5.5.1 General The durability shall be assessed when subject to regulatory requirement. The durability of profiled sheets shall be demonstrated by testing the variations after artificial accelerated weathering of the yellowness index, light transmission and flexural/tensile strength and declaring the results according to 5.5.3, 5.5.4 and 5.5.5, respectively. 5.5.2 Artificial ageing performance Artificial accelerated weathering shall be carried out: a) by xenon-arc lamps in accordance with EN ISO 4892-2:2006, Cycle 1, with radiant exposure given in Table 2, using one or more of the classes A0, A1, A2 or A3 as defined in Table 2; or b) artificial accelerated weathering shall be carried out by fluorescent UV lamps in accordance with EN ISO 4892-3:2006, Type 1A (UVA 340), Cycle 1, with test duration given in Table 3, using one or more of the classes B0, B1, B2 or B3 as defined in Table 3. CAUTION —Sheets shall be classified according to two different systems, respectively A0, A1, A2 or A3 and B0, B1, B2 or B3. Any comparison between two classes, one of each system, is not possible and shall be avoided because the two artificial accelerated weathering methods have their own test parameters which cannot be compared. NOTE New investigations and round robin tests would be necessary to decide whether a single method for assessing the ageing behaviour is achievable. This issue will be considered during the next revision of this standard. Table 2 — Artificial ageing classification according to EN ISO 4892-2 Radiant exposure, H, in the total daylight range (300 nm to 3 000 nm) GJ/m2 Class 18 ≤ H 10 ≤ H < 18 6 ≤ H < 10 4 ≤ H < 6 A0 A1 A2 A3 SIST EN 1013:2013

EN 1013:2012 (E) 11 Table 3 — Artificial ageing classification according to EN ISO 4892-3 Test duration h Class 4 000 3 000 2 000 1 000 B0 B1 B2 B3

The dimensions of the exposed test pieces shall be sufficient to allow carrying out the light transmission test and the subsequent specific tests. 5.5.3 Variation of the yellowness index after artificial ageing Variation of the yellowness index after artificial ageing shall be assessed when subject to regulatory requirement. The yellowness index shall be measured in accordance with 6.3. The amount of variation in yellowness for each applied class of Table 2 or Table 3, as applicable, shall be declared. The performance at class A3, or B3, as applicable, may be declared but the performance at higher classes of exposure shall only be declared provided that the yellowness index does not change by more than 20 units at any higher class(es) declared. 5.5.4 Variation of the light transmission after artificial ageing Variation of the light transmission after artificial ageing shall be assessed when subject to regulatory requirement. The total luminous transmittance shall be measured in accordance with 6.2. The variation of the total luminous transmittance, û2t, for each applied class of Table 2 or Table 3, as applicable, shall be declared, defined as the percentage reduction of the total luminous transmittance of an unaged sample as follows: 010ttttττττ∆−= (1) where û2t0

is the total luminous transmittance, in percentage, of an unaged sample;
û2t1

is the total luminous transmittance, in percentage, of an aged sample. The performance at class A3 or B3, as applicable, may be declared but the performance at higher classes of exposure shall only be declared provided that the variation of the total luminous transmission is not greater than 20 % at any higher class(es) declared. 5.5.5 Variation of the flexural/tensile strength after ageing The variation of the flexural/tensile strength after ageing shall be assessed when subject to regulatory requirement. SIST EN 1013:2013

EN 1013:2012 (E) 12 The variation of properties after ageing shall be determined by assessing the variations of either the flexural strength and flexural modulus by a bending test, or the tensile strength and Young's modulus by a tensile test, both according to 6.4. The percentage reductions of the flexural/tensile strength and flexural/Young’s modulus between unexposed test specimens and test specimens aged at the maximum exposure declared for variation of yellowness index and variation of total luminous transmittance shall then be expressed within the ranges ≤ 10 %, > 10 % to ≤ 20 %, > 20 % to ≤ 30 %, or > 30 %. 5.6 Thermal ageing resistance (only for thermoplastic sheets) The thermal ageing resistance of thermo

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