ISO/DIS 4586-8

High-pressure decorative laminates (HPL, HPDL) -- Sheets based on thermosetting resins (usually called laminates)

Stratifiés décoratifs haute pression (HPL, HPDL) -- Plaques à base de résines thermodurcissables (communément appelées stratifiés)

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 4586-8
ISO/TC 61/SC 11 Secretariat: JISC
Voting begins on: Voting terminates on:
2020-03-10 2020-06-02
High-pressure decorative laminates (HPL, HPDL) —
Sheets based on thermosetting resins (usually called
laminates) —
Part 8:
Classification and specifications for alternative core
laminates

Stratifiés décoratifs haute pression (HPL, HPDL) — Plaques à base de résines thermodurcissables

(communément appelées stratifiés) —
Partie 8: Classification et spécifications des différents modes de base laminés
ICS: 83.140.20
THIS DOCUMENT IS A DRAFT CIRCULATED
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STANDARD UNTIL PUBLISHED AS SUCH.
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ISO/DIS 4586-8:2020(E)
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PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
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ISO/DIS 4586-8:2020(E)
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© ISO 2020

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ii © ISO 2020 – All rights reserved
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ISO/DIS 4586-8:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

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 Surface finish ....................................................................................................................................................................... 3

5.2.4 Reverse side ......................................................................................................................................................................... 3

5.2.5 Visual inspection .............................................................................................................................................................. 4

5.3 Dimensional tolerance requirements .................................................................................................................................. 4

5.3.1 Dimensional tolerance requirements for coloured core laminates ..................................... 4

5.3.2 Dimensional tolerance requirements for metal reinforced core laminates .................. 5

5.4 Test requirements ................................................................................................................................................................................ 7

5.4.1 General requirements for coloured core laminates ........................................................................... 7

5.4.2 General requirements for metal reinforced core laminates ....................................................11

5.4.3 Reaction to fire ...............................................................................................................................................................15

Annex A (informative) Addendum to 5.4.3, relating to fire performance ...................................................................16

Bibliography .............................................................................................................................................................................................................................18

© ISO 2020 – All rights reserved iii
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ISO/DIS 4586-8:2020(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 voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11,

Products.

This second edition cancels and replaces the first edition (ISO 4586-8:2015), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— correction of errors due to typographical, formatting, and omission issues.
A list of all parts in the ISO 4586 series can be found on the ISO website.
iv © ISO 2020 – All rights reserved
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ISO/DIS 4586-8:2020(E)
Introduction

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.

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, Formability — 36/37, and Blistering — 38/39. 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, it is intended that the documentation in specific

parts of ISO 4586 for performance requirements be consulted. Each specific method has performance

requirements particular to that method for individual grades of high-pressure decorative laminate.

This document has been harmonized with EN 438-9 whenever possible.
© ISO 2020 – All rights reserved v
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DRAFT INTERNATIONAL STANDARD ISO/DIS 4586-8:2020(E)
High-pressure decorative laminates (HPL, HPDL) —
Sheets based on thermosetting resins (usually called
laminates) —
Part 8:
Classification and specifications for alternative core
laminates
1 Scope

This document specifies performance requirements for high-pressure decorative laminates (HPL,

HPDL) intended for interior use that have core compositions not covered by ISO 4586-1 through

ISO 4586-7. The core composition types (coloured core and metal reinforced core) are defined in this

document.
ISO 4586-2 specifies the methods of test relevant to this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

ISO 178, Plastics — Determination of flexural properties

ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and

extrusion plastics

ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion

method, liquid pycnometer method and titration method

ISO 4586-2:2018, High-pressure decorative laminates (HPL, HPDL) — Sheets based on thermosetting resins

(usually called laminates) — Part 2: Determination of properties

ISO 12572, Hygrothermal performance of building materials and products — Determination of water

vapour transmission properties — Cup method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
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ISO/DIS 4586-8:2020(E)
3.1
high-pressure decorative laminate
HPL
HPDL

sheet consisting of layers of cellulosic fibrous material (normally paper) impregnated with

thermosetting resins and bonded together by the high-pressure process (3.2)

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.

Note 2 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 material with increased density (≥ 1,35 g/cm ), and with the required surface finish

3.3
alternative core laminate

high-pressure decorative laminate (3.1), consisting of decorative surface layers and alternative core layers

Note 1 to entry: The decorative surface layer(s) impregnated with melamine resin may appear on one or both

sides of the laminate.
3.4
colored core laminate

high-pressure decorative alternative core laminate (3.3), the core material of which consists of cellulosic

fibrous layers (normally paper), impregnated with thermosetting resins (typically aminoplastic

thermosetting resins)

Note 1 to entry: To achieve a coloured core laminate, either the cellulosic fibres or the resins can be coloured. A

translucent laminate can be achieved by using clear resins and bleached fibres.

Note 2 to entry: The surface and the core layers can have a similar colour producing a uniformly coloured

laminate or be different colour to achieve a succession of coloured layers.
3.5
metal reinforced core laminate

high-pressure decorative alternative core laminate (3.3), the core material of which consists of metal

layer(s) or mesh(es) and cellulosic fibrous layers (normally paper) impregnated with phenolic or

aminoplastic thermosetting resins

Note 1 to entry: The purpose of including metal layers is to improve the mechanical, fire, or permeability

performance of the laminate. Additionally the metal layers can give aesthetic improvements to the edge.

4 Material types

High pressure decorative alternative core laminates are defined using a three letter classification

system as shown in Table 1.
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ISO/DIS 4586-8:2020(E)
Table 1 — Numerical classification
First letter Second letter Third letter
B (Coloured core laminate) C (Compact) S (Standard grade)

H (Metal reinforced core laminate) T (Thin laminate, < 2 mm) F (Flame-retardant grade)

Type S — Standard grade high pressure decorative alternative core laminates.

Type F — High pressure decorative alternative core laminates with improved fire retardance; similar to type S but also

complying special requirements of specified fire tests which may vary according to the application (e.g. construction,

marine, transport) and the country of use (see 5.4.3).

In addition to the abbreviation “HPL” or “HPDL” and the number of this document, materials shall be specified by the

alphabetical classification system.

NOTE As an example, coloured core standard grade thin high-pressure decorative laminate is designated as HPL/

ISO 4586-8 BTS or HPDL/ISO 4586-8 BTS.
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 4586-2:2018, Clause 4, at a distance of 0,75 m

to 1,5 m.
5.2.2 Colour, pattern and surface finish

When inspected in daylight or D65 standard illuminant and under tungsten-filament lighting illuminant

A, 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.

5.2.3 Surface finish

When inspected at different viewing angles, there shall be no significant difference between the

corresponding surface finish 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.

5.2.4 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.
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ISO/DIS 4586-8:2020(E)
5.2.5 Visual inspection
5.2.5.1 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.

In the case of a double faced laminate, it may be agreed between the purchaser and supplier that the

visual quality standard applies to one decorative face only.
5.2.5.2 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.

The admissible size of such defects is based on a maximum contamination area equivalent to

2 2
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.
5.2.5.3 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.

For compact laminate grades, edge chipping up to 3 mm on each side is permissible.

5.3 Dimensional tolerance requirements
5.3.1 Dimensional tolerance requirements for coloured core laminates

Dimensional tolerance requirements for coloured core laminates are specified in Tables 2 and 3.

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ISO/DIS 4586-8:2020(E)
Table 2 — Dimensional tolerance requirements for thin coloured core laminates
Test method
Property Requirement
(ISO 4586-2:2018
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
Length and width 6 +10 mm/−0 mm
Straightness of edges 7 1,5 mm/m maximum deviation
Squareness (Method A) 8 1,5 mm/m maximum deviation
Squareness (Method B) 9 < 6 mm
Flatness 10 100 mm/m maximum deviation

Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.

Provided that the laminates are stored in the manner and conditions recommended by the manufacturer.

Table 3 — Dimensional tolerance requirements for compact coloured core laminates
Test method
Property Requirement
(ISO 4586-2:2018
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 m ≤ 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
Length and width 6 +10 mm/−0 mm
Straightness of edges 7 1,5 mm/m maximum deviation
Squareness (Method A) 8 1,5 mm/m maximum deviation
Squareness (Method B) 9 < 6 mm
2,0 ≤ d < 6,0 mm: 12,0 mm/m maximum deviation
6,0 ≤ d < 10,0 mm: 8,0 mm/m maximum deviation
Flatness 10
10,0 ≤ d: 5, 0mm/m maximum deviation
where d = nominal thickness

Tolerances for cut-to-size panels shall be agreed between supplier and purchaser.

Provided that the laminates are stored in the manner and conditions recommended by the manufacturer.

5.3.2 Dimensional tolerance requirements for metal reinforced core laminates
Dimensional toleranc
...