Rubber household gloves -- General requirements and test methods

ISO 20057 specifies the general requirements and relevant test methods for gloves made of natural rubber latex or synthetic rubber latex or blends of natural rubber and synthetic rubber lattices intended for household use. ISO 20057 is intended to serve as a guide to obtain gloves of consistent performance. It does not cover safe and proper application of the gloves with subsequent handling, packaging and storage procedures.

Gants de ménage en caoutchouc -- Exigences générales et méthodes d'essai

General Information

Status
Published
Publication Date
10-Oct-2017
Current Stage
6060 - International Standard published
Start Date
07-Aug-2017
Completion Date
11-Oct-2017
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ISO 20057:2017 - Rubber household gloves -- General requirements and test methods
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INTERNATIONAL ISO
STANDARD 20057
First edition
2017-09
Rubber household gloves — General
requirements and test methods
Gants de ménage en caoutchouc — Exigences générales et
méthodes d'essai
Reference number
ISO 20057:2017(E)
ISO 2017
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ISO 20057:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, 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

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ii © ISO 2017 – All rights reserved
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ISO 20057:2017(E)
Contents Page

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

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

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

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

4 Materials and manufacture ....................................................................................................................................................................... 2

5 Sampling and selection of test pieces ............................................................................................................................................. 2

5.1 Sampling ....................................................................................................................................................................................................... 2

5.2 Selection of test pieces ..................................................................................................................................................................... 2

6 Requirements .......................................................................................................................................................................................................... 2

6.1 General ........................................................................................................................................................................................................... 2

6.2 Dimensions ................................................................................................................................................................................................. 2

6.3 Tensile properties ................................................................................................................................................................................. 3

6.3.1 General...................................................................................................................................................................................... 3

6.3.2 Tensile properties before and after ageing ............................................................................................... 3

6.3.3 Tensile properties after immersion in test liquids ............................................................................. 3

6.4 pH value ........................................................................................................................................................................................................ 4

7 Test methods ............................................................................................................................................................................................................. 4

7.1 Dimensions ................................................................................................................................................................................................. 4

7.2 Tensile properties before and after ageing ..................................................................................................................... 5

7.3 Ageing ............................................................................................................................................................................................................. 5

7.4 Tensile properties after immersion in test liquids ................................................................................................... 6

7.4.1 Apparatus ............................................................................................................................................................................... 6

7.4.2 Test pieces ............................................................................................................................................................................. 6

7.4.3 Test liquids and test conditions .......................................................................................................................... 6

7.4.4 Test procedure ................................................................................................................................................................... 6

7.5 pH ....................................................................................................................................................................................................................... 6

8 Packaging ..................................................................................................................................................................................................................... 7

9 Marking .......................................................................................................................................................................................................................... 7

Annex A (informative) Dimensions and tolerances for numeric size code ..................................................................8

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2017 – All rights reserved iii
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ISO 20057:2017(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 45, Rubber and rubber products,

Subcommittee SC 4, Products (other than hoses).
iv © ISO 2017 – All rights reserved
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INTERNATIONAL STANDARD ISO 20057:2017(E)
Rubber household gloves — General requirements and
test methods
1 Scope

This document specifies the general requirements and relevant test methods for gloves made of natural

rubber latex or synthetic rubber latex or blends of natural rubber and synthetic rubber lattices intended

for household use.

This document is intended to serve as a guide to obtain gloves of consistent performance. It does not

cover safe and proper application of the gloves with subsequent handling, packaging and storage

procedures.
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 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress–strain properties

ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests

ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by

acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3071, Textiles — Determination of pH of aqueous extract

ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods

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 http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
hand
part of the body from the tip of the middle finger to the wrist
3.2
glove
equipment which protects the hand (3.1) or part of the hand against hazards
Note 1 to entry: It can additionally cover part of the forearm and arm.
3.3
glove palm

part of the glove (3.2) which covers the palm of the hand (3.1), i.e. from the wrist to the base of the fingers

© ISO 2017 – All rights reserved 1
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ISO 20057:2017(E)
3.4
glove back

part of the glove (3.2) which covers the back of the hand (3.1), i.e. from the wrist to the base of the fingers

4 Materials and manufacture

Gloves are generally categorized by materials, designs and surface finishes. Materials include natural

rubber latex, synthetic rubber latex and blends. The glove outer surface may be smooth or textured,

with or without pattern on the surface while the glove inner surface may be with or without flock

lining. In any case, the glove shall be either ambidextrous or in pairs (right hand, left hand), single or

multi-layers (laminated).

Any glove made of materials and manufactured with designs and finishes described above that meet

the requirements of this document is acceptable.
5 Sampling and selection of test pieces
5.1 Sampling

For reference purposes, unless otherwise stated, gloves shall be sampled and inspected in accordance

with ISO 2859-1. The inspection levels and acceptance quality limits (AQLs) shall conform to those

specified in Table 1.
Table 1 — Inspection levels and AQLs
a a
Characteristic Inspection level AQL
General appearance S-2 4,0
Dimensions (width, length, thickness) S-2 4,0
Tensile properties (before and after ageing) S-2 4,0
b c
Tensile properties after immersion test N = 3 PASS
b d
pH value N = 3 PASS
...

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