High-pressure decorative laminates (HPL, HPDL) — Sheets based on thermosetting resins (Usually called Laminates) — Part 7: Classification and specifications for design laminates

ISO 4586-7:2015 applies to laminates intended for interior use with a design effect surface having a phenolic based core and a decorative surface, not covered by ISO 4586‑3 through ISO 4586‑6 and ISO 4586‑8. Three surface material types (metal, wood veneer, and pearlescent décor) are defined in ISO 4586:2015.

Stratifiés décoratifs haute pression (HPL, HPDL) — Plaques à base de résines thermodurcissables (communément appelées stratifiés) — Partie 7: Classification et spécifications pour conception stratifiés

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Withdrawn
Publication Date
27-Oct-2015
Withdrawal Date
27-Oct-2015
Current Stage
9599 - Withdrawal of International Standard
Completion Date
02-Jul-2018
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INTERNATIONAL ISO
STANDARD 4586-7
First edition
2015-11-01
High-pressure decorative laminates
(HPL, HPDL) — Sheets based on
thermosetting resins (Usually called
Laminates) —
Part 7:
Classification and specifications for
design laminates
Stratifiés décoratifs haute pression (HPL, HPDL) — Plaques à base de
résines thermodurcissables (communément appelées stratifiés) —
Partie 7: Classification et spécifications pour conception stratifiés
Reference number
ISO 4586-7:2015(E)
©
ISO 2015

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ISO 4586-7:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved

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ISO 4586-7:2015(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Material types . 2
5 Requirements . 3
5.1 Compliance . 3
5.2 Inspection requirements . 3
5.2.1 General. 3
5.2.2 Colour, pattern and surface finish . 3
5.2.3 Metal . 3
5.2.4 Wood veneer . 4
5.2.5 Reverse side . 4
5.2.6 Visual inspection . 4
5.3 Dimensional tolerance requirements . 4
5.3.1 Dimensional tolerance requirements for pearlescent laminates . 4
5.3.2 Dimensional tolerance requirements for metal laminates . 5
5.3.3 Dimensional tolerance requirements for wood veneer laminates . 6
5.4 Test requirements . 8
5.4.1 General requirements for pearlescent laminates . 8
5.4.2 General requirements for metal laminates .12
5.4.3 General requirements for wood veneer laminates .15
5.4.4 Additional requirements for type P high-pressure decorative design laminates .19
5.4.5 Notes on requirements for reaction to fire (see Annex B) .19
Annex A (informative) Addendum to Tables 8, 9, and 10 relating to Test Method 29:
Scratch Resistance .20
Annex B (informative) Addendum to 5.4.5, relating to fire performance .21
Bibliography .23
© ISO 2015 – All rights reserved iii

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ISO 4586-7:2015(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 61, Plastics.
This first edition of ISO 4586-7:2015 cancels and replaces (ISO 4586-1:2004), which has been
technically revised.
ISO 4586 consists of the following parts, under the general title Plastics — High-pressure decorative
laminates (HPL) — Sheets based on thermosetting resins (Usually called Laminates):
— Part 1: Introduction and general information
— Part 2: Determination of properties
— Part 3: Classification and specifications for laminates less than 2 mm thick intended for bonding to
supporting substrates
— Part 4: Classification and specifications for Compact laminates of thickness 2 mm and greater
— Part 5: Classification and specifications for flooring grade laminates less than 2 mm thick intended for
bonding to supporting substrates
— Part 6: Classification and specifications for Exterior-grade Compact laminates of thickness 2 mm and
greater
— Part 7: Classification and Specifications for Design Laminates
— Part 8: Classification and Specifications for Alternative Core Laminates
iv © ISO 2015 – All rights reserved

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INTERNATIONAL STANDARD ISO 4586-7:2015(E)
High-pressure decorative laminates (HPL, HPDL) — Sheets
based on thermosetting resins (Usually called Laminates) —
Part 7:
Classification and specifications for design laminates
1 Scope
This part of ISO 4586 applies to laminates intended for interior use with a design effect surface having
a phenolic based core and a decorative surface, not covered by ISO 4586-3 through ISO 4586-6 and
ISO 4586-8. Three surface material types (metal, wood veneer, and pearlescent décor) are defined in
this part of ISO 4586.
High-pressure decorative laminates are characterized by their qualities, durability and functional
performance. HPL sheets are available in a wide variety of colours, patterns and surface finishes; they
are resistant to wear, scratching, impact, moisture, heat and staining; and possess good hygienic and
anti-static properties, being easy to clean and maintain.
ISO 4586-2 specifies the methods of test relevant to this part of ISO 4586.
In an effort to harmonize ISO 4586 with other High-Pressure Decorative Laminate standards, multiple
methods may be published that demonstrate similar properties. In these instances, the same test
method title is given and is annotated as either “Method A” or “Method B”. This is the case in the
following tests: Edge Squareness - 8/9, Dry Heat – 17/18 Dimensional Stability at Elevated Temperatures
- 19/20, Dimensional Stability at Ambient Temperature - 21/22, Staining - 30/31, Lightfastness - 32/33,
Cigarette Burns - 36/37, Formability - 38/39, and Blistering - 40/41. In these instances, either method
may be utilized in testing. Compliance to both methods is not required. While these tests are similar
they are by no means identical and results of one method do not necessarily correspond to the results
of the accompanying test. In these situations, consult the documentation in specific clauses of ISO 4586
for performance requirements. Each specific method has performance requirements particular to that
method for individual grades of high-pressure decorative laminate.
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.
ISO 4586-2:2015, High-pressure decorative laminates (HPL, HPDL) — Sheets based on thermosetting resins
(Usually called Laminates) — Part 2: Determination of properties
1)
EN 12722 , Furniture — Assessment of surface resistance to dry heat
ISO 178, Plastics — Determination of flexural properties
ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion
method, liquid pyknometer method and titration method
ISO 11664-2, Colorimetry — Part 2: CIE standard illuminants
1) ISO 4211-2:1993 modified.
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ISO 4586-7:2015(E)

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
High-Pressure Decorative Laminate(s)
HPL
HPDL
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
Note 1 to entry: The back of the sheet(s) is made suitable for adhesive bonding to a substrate.
3.2
High-Pressure Process
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
3
material with increased density (≥ 1,35 g/cm ), and with the required surface finish
Note 1 to entry: This is a general definition of high-pressure decorative laminate(s). More specific product
definitions can be found in ISO 4586-3 to ISO 4586-8.
3.3
Pearlescent Laminate
high pressure decorative design laminate, the surface material of which consists of a pearlescent effect
decorative paper, which is impregnated with melamine resin
Note 1 to entry: To achieve the optimum aesthetic effect from the pearlescent pigment a protective melamine
layer is not used.
Note 2 to entry: As a result, some surface properties are reduced (e.g. scratch, wear) therefore it is recommended
that these products are used for vertical applications.
3.4
Metal Laminate
high pressure decorative design laminate, the surface material of which consists of a thin layer of metal
EXAMPLE Aluminium, steel, or copper.
Note 1 to entry: The surface is often protected by a thin layer of lacquer or in the case of aluminium, the surface
may be anodized. The surface performance and appearance of these metal laminates is equivalent to that of a
thin metal sheet.
Note 2 to entry: As some surface properties are lower than that of melamine(e.g. scratch, wear), it is recommended
that these products are used for vertical applications.
3.5
Wood Veneer Laminate
high pressure decorative design laminate, the surface material of which consists of a wood veneer,
which is covered by a protective melamine layer
Note 1 to entry: The surface appearance of these wood veneer laminates is similar to wood. Wood veneer
laminates are not normally available in postforming grade.
4 Material types
High pressure decorative design laminates are defined using a three letter classification system as
shown in Table 1.
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ISO 4586-7:2015(E)

Table 1 — Numerical classification
First letter Second letter Third letter
A (Pearlescent laminate)C (Compact) S (Standard grade)
M (Metal laminate) T (Thin laminate, < 2 mm) or P (Postformable grade)
W (Wood laminate) or F (Flame-retardant grade)
Type S - Standard grade decorative laminates.
Type P - Postformable decorative laminates; similar to type S but can also be formed at elevated temperature.
Type F - Decorative laminates with improved fire retardance; similar to types S or P but also meeting special requirements
of specified fire tests which may vary according to the application (e.g. construction, marine, transport) and the country of
use (see 5.4.5).
In addition to the abbreviation “HPL” or “HPDL” and the number of this ISO standard, materials shall be specified by the
alphabetical classification system.
NOTE as an example, Pearlescent standard grade thin high-pressure decorative design laminate is designated as
HPL/ISO 4586-8 ATS or HPDL/ISO 4586-8 ATS.
5 Requirements
5.1 Compliance
High-pressure decorative design laminates classified in Table 1 shall comply with all the appropriate
requirements specified in 5.2, 5.3, and 5.4. This applies to both full-size sheets and cut-to-size panels.
5.2 Inspection requirements
5.2.1 General
Inspection shall be carried out in accordance with ISO 4586-2:2015, Clause 4, at a distance of 1,5 m.
5.2.2 Colour, pattern and surface finish
When inspected in daylight or D65 standard illuminant, as specified in ISO 11664-2, and under
tungsten-filament lighting illuminant A as specified in ISO 11664-2, a slight difference between the
corresponding colour reference sample held by the supplier and the specimen under test is acceptable.
As colour and surface finish are critical, it is recommended that the sheets are checked for colour and
surface finish compatibility without protective film before fabrication or installation.
Some of these products are directional in surface finish or colour and they shall be installed in the
correct orientation.
5.2.3 Metal
When inspected in daylight or D65 standard illuminant, as specified in ISO 11664-2, and under
tungsten-filament lighting illuminant A as specified in ISO 11664-2, a slight difference between the
corresponding colour reference sample held by the supplier and the specimen under test is acceptable.
As colour and surface finish are critical, it is recommended that the sheets are checked for colour and
surface finish compatibility without protective film before fabrication or installation.
Some of these products are directional in surface finish or colour and they shall be installed in the
correct orientation. Small indentations in the surface are unavoidable.
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ISO 4586-7:2015(E)

5.2.4 Wood veneer
Due to the fact that wood is a natural product, each veneer may be considered as unique. Slight colour
and structure differences are considered normal. Singularities such as knots and resin inclusions are
not considered as defects, but as a part of the décor. There as differences in light fastness performance
depending on the wood species and the source of the wood.
5.2.5 Reverse side
The reverse side of single-sided sheets shall be suitable for adhesive bonding (e.g. sanded). In the case
of sanded backs, slight chatter marks shall be permitted.
5.2.6 Visual inspection
5.2.6.1 General
The following inspection requirements are intended as a general guide, indicating the minimum
acceptable quality for laminates. Cut-to-size panels and certain applications involving full-size sheets
may call for special quality requirements which can be negotiated between the supplier and purchaser,
in such cases the following requirements may be used as a basis for agreement. Only a small percentage
of sheets in a batch (the level to be agreed upon between the supplier and the customer) shall contain
defects of the minimum acceptable level.
5.2.6.2 Surface quality
The following defects are permissible:
— Dirt, spots dents, and similar surface defects.
The admissible size of such defects is based on a maximum contamination area equivalent to
2 2
1,0 mm /m of laminate and is proportional to the sheet size under inspection.
The total admissible area of contamination may be concentrated in one spot or dispersed over an
unlimited amount of smaller defects:
— Fibres, hairs, and scratches.
2 2
The admissible size of such defects is based on a maximum contamination area equivalent to 10 mm /m
of laminate and is proportional to the sheet size under inspection.
The total admissible area of contamination may be concentrated in one spot or dispersed over an
unlimited amount of smaller defects.
5.2.6.3 Edge quality
Visual defects (e.g. moisture marks, lack of gloss, corner damage) can be present on all four edges of the
laminate, providing the defect-free length and width are at least the nominal size minus 20 mm.
5.3 Dimensional tolerance requirements
5.3.1 Dimensional tolerance requirements for pearlescent laminates
Dimensional tolerance requirements for pearlescent laminates are specified in Tables 2 and 3.
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ISO 4586-7:2015(E)

Table 2 — Dimensional tolerance requirements for thin pearlescent laminates
Property Test method Requirement
(ISO 4586-2 clause no.)
0,5 mm ≤ d ≤ 1,0 mm: ± 0,10 mm maximum deviation
Thickness 5 1,0 mm ≤ d ≤ 2,0 mm: ± 0,15 mm maximum deviation
where d = nominal thickness
a
Length and width 6 +10 mm/-0 mm
a
Straightness of edges 7 1,5 mm/m maximum deviation
a
Squareness (Method A) 8 1,5 mm/m maximum deviation
a
Squareness (Method B) 9 < 6 mm
b
Flatness 10 60 mm/m maximum deviation
a
Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.
b
Provided that the laminates are stored in the manner and conditions recommended by the manufacturer they shall
comply with the flatness requirements specified in Table 2 when measured in accordance with ISO 4586-2:2015, Clause 10.
Table 3 — Dimensional tolerance requirements for compact pearlescent laminates
Property Test method Requirement
(ISO 4586-2 clause no.)
2,0 mm ≤ d < 3,0 mm: ± 0,20 mm maximum deviation
3,0 mm ≤ d < 5,0 mm: ± 0,30 mm maximum deviation
5,0 mm ≤ d < 8,0 mm: ± 0,40 mm maximum deviation
8,0 mm ≤ d < 12,0 mm: ± 0,50 mm maximum deviation
12,0 mm ≤ d < 16,0 mm: ± 0,60 mm maximum deviation
Thickness 5
16,0 mm ≤ d < 20,0 mm: ± 0,70 mm maximum deviation
20,0 mm ≤ d < 25,0 mm: ± 0,80 mm maximum deviation
25,0 mm ≤ d: to be agreed upon between the supplier
and customer
where d = nominal thickness
a
Length and width 6 +10 mm/-0 mm
a
Straightness of edges 7 1,5 mm/m maximum deviation
a
Squareness (Method A) 8 1,5 mm/m maximum deviation
a
9 < 6 mm
Squareness (Method B)
2,0 mm ≤ d < 6,0 mm: 8,0 mm/m maximum deviation
6,0 mm ≤ d < 10,0 mm: 5,0 mm/m maximum deviation
b
Flatness 10
10,0 mm ≤ d: 3,0 mm/m maximum deviation
where d = nominal thickness
a
Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.
b
Provided that the laminates are stored in the manner and conditions recommended by the manufacturer they shall
comply with the flatness requirements specified in Table 2 when measured in accordance with ISO 4586-2:2015, Clause 10.
5.3.2 Dimensional tolerance requirements for metal laminates
Dimensional tolerance requirements for metal laminates are specified in Tables 4 and 5.
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ISO 4586-7:2015(E)

Table 4 — Dimensional tolerance requirements for thin metal laminates
Property Test method Requirement
(ISO 4586-2 clause no.)
0,5 mm ≤ d < 1,0 mm: ± 0,15 mm maximum deviation
Thickness 5 1,0 mm ≤ d < 2,0 mm: ± 0,18 mm maximum deviation
where d = nominal thickness
a
Length and width 6 +10 mm/-0 mm
a
Straightness of edges 7 1,5 mm/m maximum deviation
a
Squareness (Method A) 8 1,5 mm/m maximum deviation
a
Squareness (Method B) 9 < 6 mm
b
Flatness 10 100 mm/m maximum deviation
a
Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.
b
Provided that the laminates are stored in the manner and conditions recommended by the manufacturer they shall
comply with the flatness requirements specified in Table 2 when measured in accordance with ISO 4586-2:2015, Clause 10.
Table 5 — Dimensional tolerance requirements for compact metal laminates
Property Test method Requirement
(ISO 4586-2 clause no.)
2,0 mm ≤ d < 3,0 mm: ± 0,25 mm maximum deviation
3,0 mm ≤ d < 5,0 mm: ± 0,40 mm maximum deviation
5,0 mm ≤ d < 8,0 mm: ± 0,50 mm maximum deviation
8,0 mm ≤ d < 12,0 mm: ± 0,70 mm maximum deviation
12,0 mm ≤ d < 16,0 mm: ± 0,80 mm maximum deviation
Thickness 5
16,0 mm ≤ d < 20,0 mm: ± 0,90 mm maximum deviation
20,0 mm ≤ d < 25,0 mm: ± 1,00 mm maximum deviation
25,0 mm ≤ d: to be agreed upon between the supplier
and customer
where d = nominal thickness
a
Length and width 6 +10 mm/-0 mm
a
Straightness of edges 7 1,5 mm/m maximum deviation
a
Squareness (Method A) 8 1,5 mm/m maximum deviation
a
9 < 6 mm
Squareness (Method B)
2,0 mm ≤ d < 6,0 mm: 8,0 mm/m maximum deviation
6,0 mm ≤ d < 10,0 mm: 5,0 mm/m maximum deviation
b
Flatness 10
10,0 mm ≤ d: 3,0 mm/m maximum deviation
where d = nominal thickness
a
Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.
b
Provided that the laminates are stored in the manner and conditions recommended by the manufacturer they shall
comply with the flatness requirements specified in Table 2 when measured in accordance with ISO 4586-2:2015, Clause 10.
5.3.3 Dimensional tolerance requirements for wood veneer laminates
Dimensional tolerance requirements for wood veneer laminates are specified in Tables 6 and 7.
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ISO 4586-7:2015(E)

Table 6 — Dimensional tolerance requirements for thin wood veneer laminates
Property Test method Requirement
(ISO 4586-2 clause no.)
0,5 mm ≤ d < 1,0 mm: ± 0,15 mm maximum deviation
Thickness 5 1,0 mm ≤ d < 2,0 mm: ± 0,18 mm maximum deviation
where d = nominal thickness
a
Length and width 6 +10 mm/-0 mm
a
Straightness of edges 7 1,5 mm/m maximum deviation
a
Squareness (Method A) 8 1,5 mm/m maximum deviation
a
Squareness (Method B) 9 < 6 mm
b
Flatness 10 120 mm/m maximum deviation
a
Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.
b
Provided that the laminates are stored in the manner and conditions recommended by the manufacturer they shall
comply with the flatness requirements specified in Table 2 when measured in accordance with ISO 4586-2:2015, Clause 10.
Table 7 — Dimensional tolerance requirements for compact wood veneer laminates
Property Test method Requirement
(ISO 4586-2 clause no.)
2,0 mm ≤ d < 3,0 mm: ± 0,25 mm maximum deviation
3,0 mm ≤ d < 5,0 mm: ± 0,40 mm maximum deviation
5,0 mm ≤ d < 8,0 mm: ± 0,50 mm maximum deviation
8,0 mm ≤ d < 12,0 mm: ± 0,70 mm maximum deviation
12,0 mm ≤ d < 16,0 mm: ± 0,80 mm maximum deviation
Thickness 5
16,0 mm ≤ d < 20,0 mm: ± 0,90 mm maximum deviation
20,0 mm ≤ d < 25,0 mm: ± 1,00 mm maximum deviation
25,0 mm ≤ d: to be agreed upon between the supplier
and customer
where d = nominal thickness
a
Length and width 6 +10 mm/-0 mm
a
Straightness of edges 7 1,5 mm/m maximum deviation
a
Squareness (Method A) 8 1,5 mm/m maximum deviation
a
9 < 6 mm
Squareness (Method B)
2,0 mm ≤ d < 6,0 mm: 12,0 mm/m maximum deviation
6,0 mm ≤ d < 10,0 mm: 8,0 mm/m maximum deviation
b
Flatness 10
10,0 mm ≤ d: 5,0 mm/m maximum deviation
where d = nominal thickness
a
Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.
b
Provided that the laminates are stored in the manner and conditions recommended by the manufacturer they shall
comply with the flatness requirements specified in Table 2 when measured in accordance with ISO 4586-2:2015, Clause 10.
© ISO 2015 – All rights reserved 7

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ISO 4586-7:2015(E)

5.4 Test requirements
5.4.1 General requirements for pearlescent laminates
General requirements for pearlescent laminates are specified in Table 8
Table 8 — General requirements for pearlescent laminates
Test method (ISO 4586-2 Laminate grade
Unit
Property or
Property Clause no. Unless other-
attribute
(max or min) ATS ATP ATF ACS ACF
wise stated)
Rating (min)
Appearance gloss finish 3 3 3 3 3
other finishes 4 4 4 4 4
a
% (max)
Resistance to
immersion in 13 Mass increase 2 mm ≤ d < 5 mm - - - 5,0 7,0
boiling water
d ≥ 5 mm 2,0 3,0
a
% (max)
Thickness in-
2 mm ≤ d < 5 mm - - - 6,0 9,0
crease
d ≥ 5 mm 2,0 6,0
Resistance to
14 Appearance Rating (min) 3 3 3 3 3
water vapour
a
Where d = nominal thickness
b
L = in the longitudinal (or machine) direction of the fibrous sheet material (normally the direction of the longest
dimension of the laminate).
c
T = in the cross-longitudinal (cross-machine) direction of the fibrous sheet material (at right angles to direction L).
d
Extraneous darkening and/or photochroism are due to the shock effect of accelerated exposure and are not
characteristic of natural exposure.
e
Machine crosshead speed of 2 mm/min
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ISO 4586-7:2015(E)

Table 8 (continued)
Test method (ISO 4586-2 Laminate grade
Unit
Property or
Property Clause no. Unless other-
attribute
(max or min) ATS ATP ATF ACS ACF
wise stated)
a
% (max)
d < 2 mm
- -
b
L 0,75 0,75 0,75
c
T 1,25 1,25 1,25
a
% (max)
C u m u l a t i v e
2 mm ≤ d < 5 mm
19 d i men sion a l - - -
b
L 0,40 0,40
change
c
T 0,80 0,80
a
% (max)
d ≥ 5 mm
- - -
b
L 0,30 0,30
c
T 0,60 0,60
a
% (max)
d < 2 mm
- -
b
L 0,75 1,00 1,10
c
T 1,25 1,15 1,25
a
% (max)
Dimensional
C u m u l a t i v e
2 mm ≤ d < 5 mm
stability at el-
20 d i men sion a l - - -
b
evated temper- L 0,30 0,30
change
ature (Method
c
T 0,70 0,30
A) or
a
% (max)
Dimensional
stability at el- d ≥ 5 mm
- - -
evated temper-
b
L 0,30 0,30
ature (Method
c
B) T 0,70 0,30
a
Where d = nominal thickness
b
L = in the longitudinal (or machine) direction of the fibrous sheet material (normally the direction of the longest
dimension of the laminate).
c
T = in the cross-longitudinal (cross-machine) direction of the fibrous sheet material (at right angles to direction L).
d
Extraneous darkening and/or photochroism are due to the shock effect of accelerated exposure and are not
characteristic of natural exposure.
e
Machine crosshead speed of 2 mm/min
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ISO 4586-7:2015(E)

Table 8 (continued)
Test method (ISO 4586-2 Laminate grade
Unit
Property or
Property Clause no. Unless other-
attribute
(max or min) ATS ATP ATF ACS ACF
wise stated)
a
% (max)
d < 2 mm
- -
b
L 0,75 0,75 0,75
c
T 1,25 1,25 1,25
a
% (max)
C u m u l a t i v e
...

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