ISO/FDIS 21061

Footwear -- Chemical tests -- General principles on the preparation of samples

Chaussures -- Essais chimiques -- Principes généraux relatifs à la préparation des échantillons

General Information

• Status: Published
• ICS: 61.060 - Footwear
• Technical Committee: ISO/TC 216 - Footwear
• Drafting Committee: ISO/TC 216/WG 2 - Footwear and environmental aspects
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 16-Jun-2021
• Completion Date: 16-Jun-2021

Standards Content (sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 21061
ISO/TC 216
Footwear — Chemical tests — General
Secretariat: UNE
principles on the preparation of
Voting begins on:
2021­06­16 samples
Voting terminates on:
Chaussures — Essais chimiques — Principes généraux relatifs à la
2021­08­11
préparation des échantillons
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 21061:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
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ISO/FDIS 21061:2021(E)
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© ISO 2021

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ii © ISO 2021 – All rights reserved
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ISO/FDIS 21061:2021(E)
Contents Page

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

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

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

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

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

4 Designation system ............................................................................................................................................................................................ 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Component part designation ...................................................................................................................................................... 3

4.3 Colour designation ......... ...................................................................................................................................................................... 3

4.4 Material classification designation ........................................................................................................................................ 3

4.5 Useful information designation ................................................................................................................................................ 3

5 Preparation of samples.................................................................................................................................................................................. 6

5.1 General ........................................................................................................................................................................................................... 6

5.2 Photo and identification of material classification .................................................................................................. 6

5.3 Disassembling of footwear ........................................................................................................................................................... 7

5.4 Testing schedule .................................................................................................................................................................................... 7

5.5 Sampling ....................................................................................................................................................................................................... 7

5.6 Storage and conditioning ............................................................................................................................................................... 8

Annex A (normative) Colour designation ........................................................................................................................................................ 9

Annex B (normative) Procedure for preparation of samples ..................................................................................................11

Annex C (normative) Materials used in the footwear industry .............................................................................................12

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

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ISO/FDIS 21061:2021(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 non­governmental, 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 of 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 www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 216, Footwear, in collaboration with

the European Committee for Standardization (CEN) Technical Committee CEN/TC 309, Footwear, in

accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
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ISO/FDIS 21061:2021(E)
Introduction

With the development of society and the improvement of people’s living standards, the chemical

safety of footwear has widely gained attention. As more critical substance in footwear and footwear

components are needed, many chemical test methods for critical substances have been developed.

However, there lacks a unified sample preparation method for chemical tests. Due to the complex

materials and structures used in footwear and the different ways in which critical substances exist,

the sample taken from footwear is often not sufficiently homogeneous to give a representative test

specimen. It is thus very difficult to develop a single technique of sampling that can be used in all

circumstances. However, if every material in an article of footwear were tested, it would be a large

amount of work and yield a large test fee. As an example, see Table 1, a common article of footwear

can cut into over 10 kinds of test specimen when carrying out tests for one chemical. So, a sampling

method is needed urgently to provide general rules for preparation of samples, which can reduce and

even prevent the inconsistency of sampling procedures between different laboratories and which can

provide a guarantee for the stability of test results.
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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 21061:2021(E)
Footwear — Chemical tests — General principles on the
preparation of samples
1 Scope

This document specifies a range of procedures for the sample preparation of footwear and footwear

components to carry out chemical tests. It further specifies how to designate the samples.

The sampling procedures specified are designed to allow concurrent chemical testing for footwear

This document is applicable to all types of footwear and footwear components.
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 4044, Leather — Chemical tests — Preparation of chemical test samples
ISO 19952, Footwear — Vocabulary
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 19952 and the following apply.

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

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
component in contact with the skin
component closely in contact with foot or leg skin during wearing
Note 1 to entry: Foot (leg) skin hose includes sock, stocking, tights, etc.

Note 2 to entry: If a footwear has no lining, the inside of upper should be taken as lining and regarded as

component in contact with the skin.

EXAMPLE Linings, tongues, insoles and insocks are components in contact with the skin.

3.2
accessory

indispensable visible component that has a technical function in the footwear construction

EXAMPLE Fasteners, zipper, laces.
3.3
decorative attachment

component with not functional property and usually designed for aesthetic purpose

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ISO/FDIS 21061:2021(E)
Figure 1 — Exception of decorative attachment
3.4
accessible component

component that could be directly reached or touched without dismantling or destroying any permanent

joining of the footwear
3.5
inaccessible component

component hidden inside the footwear that cannot be reached or touched without dismantling or

destroying any permanent joining of the footwear
EXAMPLE Foam, shank, toe puff, stiffener, etc.
3.6
combined material
composite material

material constituted of a combination of several different raw materials which cannot be separated

mechanically

EXAMPLE Coated textile/leather (a textile/leather covered by a polymer film), complex upper (upper and

lining are fully stuck by glue or other techniques and it is impossible to separate them), rubber boot upper (the

sock is fully dissolved in rubber), soling material (in injected sole footwear the insole can be fully dissolved in the

sole), foam with adhesive or foam with residues of adhesive, etc.
3.7
composite test sample

mixture of several different test samples of the footwear from the same material classification

3.8
sample

raw, semi­worked, worked, semi­manufactured, manufactured, semi­made­up or made­up product

4 Designation system
4.1 General
For each sample, the following parameters shall be specified:
— component parts;
— colours;
— material classifications;
— any other useful information.
Table 1 gives examples of sample designation.
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ISO/FDIS 21061:2021(E)
4.2 Component part designation

Figures 2 defines the different components of the footwear. Figures 2 shall be used to identify the

components present in the tested footwear (see ISO 19952 for definitions to components listed).

If needed, position terms can be used to further specify the designation of the part. Figures 3 and 4 can

be used as reference.

There are four main positions viewing from above: front, back, lateral and medial. For parts in between,

there are four more sub­positions (see Figure 3). Three are two main positions viewing form lateral:

top and lower. For parts in between, there are 4 more sub­positions (see Figure 4).

If the decorative attachments cover more than 50 % of the upper area, as shown in Figure 1, consider

the decorative attachment as an upper.
4.3 Colour designation

The colour of test samples shall be determined according to the colour designation given in Annex A.

4.4 Material classification designation

Specify the material classification of each test sample. The material classification of each test sample

shall be in accordance with Annex C. For example, leather and fur, textile, polymer (including synthetic

materials, plastic etc.), rubber, foam, wood, metal and fibrous board, etc.

In certain cases, it is difficult for laboratories to easily identify the material of the component, for

example:
— Rubber, PU, plastic, foam should be termed as polymers.
— Natural and synthetic fibres should be termed as textiles.
NOTE The material classification can be completed by additional information:

— Leather can be further classified into bovine, sheep, goat, coated bovine, bovine suede, split bovine, etc.

— Textile can be further classified into cotton, silk, polyamide, polyester, fibre blending, etc.

4.5 Useful information designation
For test samples, the information below shall be specified:
— component in contact with the skin or component not in contact with the skin;
— accessory;
— if the component is covered by glue(s);
— accessible component or inaccessible component.
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ISO/FDIS 21061:2021(E)
Key
1 toe puff 9 heel lift 17 inner lining
2 welt 10 midsole 18 tongue
3 bottom lining 11 heel piece 19 lace hook
4 outsole 12 heel 20 facer
5 decorative attachment 13 quarter 21 lace
6 insock 14 stiffener 22 eyelet
7 insole 15 collar 23 vamp
8 shank 16 lining 24 seam
Figure 2 — Components of footwear
Table 1 — Example of designation examples
Test sam-
Component part Colour Material classification Useful information
ples
1 Vamp (upper) Black Coated leather
Polyurethane (PU) coat­ Polyvinyl chloride (PVC)
2 Quarter (upper) Black
ed textile pre­test: negative
3 Counter (upper) Dark grey PU coated textile PVC pre­test: negative
component in contact
4 Quarter (lining) Light orange Natural textile
with the skin
component in contact
5 Counter (lining) Light orange Natural textile
with the skin
component in contact
6 Counter (lining) Light brown Synthetic textile
with the skin

In certain cases, it is impossible to specify clearly the material classification. Therefore, a generic term may be used:

Covers all types of polymers excluding synthetic textiles, foams and rubber.
All textiles excluding all natural base fibre.
Covers all types of textile material.
It is possible that a component is constituted of several materials.
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ISO/FDIS 21061:2021(E)
Table 1 (continued)
Test sam-
Component part Colour Material classification Useful information
ples
7 Toe puff Dark yellow Polymer
8 Stiffener Light grey Polymer
component in contact
9 Vamp (lining) Brown Leather
with the skin
component in contact
10 Insock Brown Leather
with the skin
11 Back lower cushion Grey Foam PVC pre­test: negative
12 Insole Brown combined material
13 Shank Light grey Metal Steel
14 Wedge Dark grey Cellulosic material Paper board
15 Midsole Grey PU PVC pre­test: negative
16 Heel Light grey PU PVC pre­test: negative
17 Heel piece Black Rubber
18 Outsole Black Rubber
19 Facer White Textile
Decorative attachment,
20 Light yellow Metal Brass
front lateral
Decorative attachment, through rivet
21 Light yellow Metal
back Stainless steel

In certain cases, it is impossible to specify clearly the material classification. Therefore, a generic term may be used:

Covers all types of polymers excluding synthetic textiles, foams and rubber.
All textiles excluding all natural base fibre.
Covers all types of textile material.
It is possible that a component is constituted of several materials.
Key
1 front 5 back
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ISO/FDIS 21061:2021(E)
2 front medial 6 back lateral
3 medial 7 lateral
4 back medial 8 front lateral
Figure 3 — Positional designation of footwear - Positions from above
Key
1 top 5 lower
2 back top 6 front lower
3 back 7 lower
4 back lower 8 front top
Figure 4 — Positional designation of footwear - Positions from lateral
5 Preparation of samples
5.1 General

A generic flowchart for preparing samples is provided in Figure B.1. The preparation of samples shall

be in accordance with the flowchart in Annex B.
5.2 Photo and identification of material classification

Photos should be taken before disassembling the footwear for sample identification purpose.

NOTE When necessary, the footwear should be documented with 4 photos: 1 from above, 1 from each side

and 1 from underneath.

Using the document of the footwear manufacturer or visually, all different materials of the footwear

which are required to be tested, shall be identified and assigned a material classification (see Annex C).

If possible at this stage, for each material classification, list all the different raw materials (for example,

Table 1 can be used).
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ISO/FDIS 21061:2021(E)
5.3 Disassembling of footwear

Dismantle the footwear and separate all the materials required for chemical testing and register them,

for example completing Table 1.

Each test sample shall be separated as cleanly as possible in order to avoid any chemical contamination

that could affect the final result.
If the laboratory does not or cannot remove t
...