Graphic technology -- Blankets for offset printing

ISO 12636:2017 defines vocabulary and specifies test methods, characteristics, ordering and labelling information for blankets for offset printing. This document does not apply to un-tensioned or unclamped blankets for offset printing, nor offset printing sleeves used on gapless presses.

Technologie graphique -- Blanchets pour impression offset

Grafična tehnologija - Odtisne gume za ofsetni tisk

Ta dokument opredeljuje besedišče ter določa preskusne metode, karakteristike in informacije o naročanju in označevanju odtisnih gum za ofsetni tisk. Ta dokument se ne uporablja za nenapete ali nepritrjene
odtisne gume za ofsetni tisk oziroma ovojev za ofsetni tisk, ki se uporabljajo na tiskarskih strojih brez vrzeli.

General Information

Status
Published
Publication Date
02-Jan-2018
Current Stage
6060 - International Standard published
Start Date
22-Nov-2017
Completion Date
03-Jan-2018

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INTERNATIONAL ISO
STANDARD 12636
Second edition
2018-01
Graphic technology — Blankets for
offset printing
Technologie graphique — Blanchets pour impression offset
Reference number
ISO 12636:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 12636:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 12636:2018(E)
Contents Page

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

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

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

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

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

4 Requirements .......................................................................................................................................................................................................... 2

4.1 Information ................................................................................................................................................................................................ 2

4.2 Dimension ................................................................................................................................................................................................... 3

4.2.1 Thickness ................................................................................................................................................................................ 3

4.2.2 Mean thickness .................................................................................................................................................................. 3

4.2.3 Accuracy of width and length ............................................................................................................................... 3

4.2.4 Plan view ................................................................................................................................................................................ 4

4.3 Elongation ................................................................................................................................................................................................... 4

4.4 Tensile strength ...................................................................................................................................................................................... 4

4.5 Compressibility ....................................................................................................................................................................................... 4

4.6 Thickness change .................................................................................................................................................................................. 4

4.6.1 Swelling and/or shrinkage due to printing ink component ....................................................... 4

4.6.2 Swelling and/or shrinkage due to blanket washes ............................................................................ 4

4.7 Cut blanket markings ........................................................................................................................................................................ 4

5 Test methods ............................................................................................................................................................................................................. 4

5.1 General ........................................................................................................................................................................................................... 4

5.2 Thickness ..................................................................................................................................................................................................... 4

5.3 Elongation ................................................................................................................................................................................................... 5

5.4 Tensile strength ...................................................................................................................................................................................... 5

5.5 Load at specific deflection ............................................................................................................................................................. 5

5.6 Compressibility – Deflection ....................................................................................................................................................... 6

5.7 Compressibility – Indentation ................................................................................................................................................... 6

5.8 Surface texture ........................................................................................................................................................................................ 8

5.9 Thickness change .................................................................................................................................................................................. 9

5.9.1 Swelling or shrinkage after exposure to a test liquid ....................................................................... 9

5.9.2 Swelling or shrinkage after recovery from exposure to a test liquid .................................. 9

5.9.3 Exposure conditions for printing ink ingredients ............................................................................10

5.9.4 Exposure conditions for washes .....................................................................................................................10

5.9.5 Report .....................................................................................................................................................................................10

Bibliography .............................................................................................................................................................................................................................11

© ISO 2018 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 12636:2018(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 130, Graphic technology.

This second edition cancels and replaces the first edition (ISO 12636:1998), which has been technically

revised.
iv © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 12636:2018(E)
Introduction

The blanket is an essential part of every offset printing press. Its properties exert a profound influence

on the mechanical conditions within the press and the visual characteristics of the prints produced. It

is therefore useful to provide test methods, unified data, and tolerances for some essential properties

of the blankets. This permits the suppliers to state properties of blanket types in a standardized and

universally understood manner. It also helps the printer to select the appropriate blanket type for a

particular press type or press condition. A further benefit is that the design of printing presses can be

based on blanket data resulting from unified test methods.
© ISO 2018 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 12636:2018(E)
Graphic technology — Blankets for offset printing
1 Scope

This document defines vocabulary and specifies test methods, characteristics, ordering and labelling

information for blankets for offset printing. This document does not apply to un-tensioned or unclamped

blankets for offset printing, nor offset printing sleeves used on gapless presses.

2 Normative references
There are no normative references in this document.
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:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
across cylinder direction

direction of the side of the blanket (3.4) as intended to be applied perpendicular to the direction of

rotation
3.2
around-the-cylinder direction

direction of the side of the blanket (3.4) as intended to be applied in the direction of the rotation

3.3
average thickness
mean of thickness measurements
3.4
blanket

composite body, consisting of coated carrier material, e.g. fabric, used for transfer of the printing ink

from the form onto the material to be printed on, e.g. for offset printing
3.5
load at specific deflection
average stress of a blanket (3.4) under compressive force
Note 1 to entry: It is expressed in kPa.
3.6
compressibility–deflection

average thickness reduction of a blanket (3.4) measured under a specific pressure

Note 1 to entry: It is expressed in millimetres.
© ISO 2018 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO 12636:2018(E)
3.7
compressibility–indentation

average depth of impression, I, in a blanket (3.4) measured under a specific pressure

Note 1 to entry: It is expressed in millimetres or as percentage indentation, I .

3.8
elongation

increase of the dimension in the around-the-cylinder direction (3.2) of a blanket (3.4) under

longitudinal stress

Note 1 to entry: It is expressed in percentage of the length at a specified force per width.

3.9
packing
underlay material placed under the blanket (3.4)
3.10
printing surface
side of the blanket (3.4) that is used for the transfer of printing ink
3.11
shrinkage

decrease in thickness due to mechanical forces and decrease in all dimensions due to exposure of the

blanket printing surface to a liquid

Note 1 to entry: It is expressed as a percentage of the original blanket thickness, or as an absolute thickness

decrease in millimetres.
3.12
sizes
dimensions (thickness, width and length) of a cut ready-to-use blanket (3.4)
3.13
swelling

increase in thickness due to exposure of the blanket printing surface to a liquid

Note 1 to entry: It is expressed as a percentage of the original blanket thickness or as an absolute thickness

increase in millimetres.
3.14
tensile strength

force per unit width required for breaking a blanket (3.4) under longitudinal stress in the around-the-

cylinder direction (3.2)
3.15
thickness variation
difference between the greatest and the smallest thickness value in millimetres
3.16
surface texture
average roughness of blanket surface, R
Note 1 to entry: It is expressed in micrometres.
4 Requirements
4.1 Information

The compatibility of the blankets to either conventional, dual use or ultraviolet (UV) inks shall be

documented.
2 © ISO 2018 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 12636:2018(E)

The overall hardness and the microhardness are not specified in this document. They are the choice

of the manufacturer. If the manufacturer provides such information, the test method shall also be

documented and mentioned with the results.
The printing surface material formulation an
...

SLOVENSKI STANDARD
SIST ISO 12636:2018
01-julij-2018
1DGRPHãþD
SIST ISO 12636:2002
*UDILþQDWHKQRORJLMD2GWLVQHJXPH]DRIVHWQLWLVN
Graphic technology - Blankets for offset printing
Technologie graphique - Blanchets pour impression offset
Ta slovenski standard je istoveten z: ISO 12636:2018
ICS:
37.100.10 Reprodukcijska oprema Reproduction equipment
SIST ISO 12636:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 12636:2018
---------------------- Page: 2 ----------------------
SIST ISO 12636:2018
INTERNATIONAL ISO
STANDARD 12636
Second edition
2018-01
Graphic technology — Blankets for
offset printing
Technologie graphique — Blanchets pour impression offset
Reference number
ISO 12636:2018(E)
ISO 2018
---------------------- Page: 3 ----------------------
SIST ISO 12636:2018
ISO 12636:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 12636:2018
ISO 12636:2018(E)
Contents Page

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

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

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

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

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

4 Requirements .......................................................................................................................................................................................................... 2

4.1 Information ................................................................................................................................................................................................ 2

4.2 Dimension ................................................................................................................................................................................................... 3

4.2.1 Thickness ................................................................................................................................................................................ 3

4.2.2 Mean thickness .................................................................................................................................................................. 3

4.2.3 Accuracy of width and length ............................................................................................................................... 3

4.2.4 Plan view ................................................................................................................................................................................ 4

4.3 Elongation ................................................................................................................................................................................................... 4

4.4 Tensile strength ...................................................................................................................................................................................... 4

4.5 Compressibility ....................................................................................................................................................................................... 4

4.6 Thickness change .................................................................................................................................................................................. 4

4.6.1 Swelling and/or shrinkage due to printing ink component ....................................................... 4

4.6.2 Swelling and/or shrinkage due to blanket washes ............................................................................ 4

4.7 Cut blanket markings ........................................................................................................................................................................ 4

5 Test methods ............................................................................................................................................................................................................. 4

5.1 General ........................................................................................................................................................................................................... 4

5.2 Thickness ..................................................................................................................................................................................................... 4

5.3 Elongation ................................................................................................................................................................................................... 5

5.4 Tensile strength ...................................................................................................................................................................................... 5

5.5 Load at specific deflection ............................................................................................................................................................. 5

5.6 Compressibility – Deflection ....................................................................................................................................................... 6

5.7 Compressibility – Indentation ................................................................................................................................................... 6

5.8 Surface texture ........................................................................................................................................................................................ 8

5.9 Thickness change .................................................................................................................................................................................. 9

5.9.1 Swelling or shrinkage after exposure to a test liquid ....................................................................... 9

5.9.2 Swelling or shrinkage after recovery from exposure to a test liquid .................................. 9

5.9.3 Exposure conditions for printing ink ingredients ............................................................................10

5.9.4 Exposure conditions for washes .....................................................................................................................10

5.9.5 Report .....................................................................................................................................................................................10

Bibliography .............................................................................................................................................................................................................................11

© ISO 2018 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 12636:2018
ISO 12636:2018(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 130, Graphic technology.

This second edition cancels and replaces the first edition (ISO 12636:1998), which has been technically

revised.
iv © ISO 2018 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 12636:2018
ISO 12636:2018(E)
Introduction

The blanket is an essential part of every offset printing press. Its properties exert a profound influence

on the mechanical conditions within the press and the visual characteristics of the prints produced. It

is therefore useful to provide test methods, unified data, and tolerances for some essential properties

of the blankets. This permits the suppliers to state properties of blanket types in a standardized and

universally understood manner. It also helps the printer to select the appropriate blanket type for a

particular press type or press condition. A further benefit is that the design of printing presses can be

based on blanket data resulting from unified test methods.
© ISO 2018 – All rights reserved v
---------------------- Page: 7 ----------------------
SIST ISO 12636:2018
---------------------- Page: 8 ----------------------
SIST ISO 12636:2018
INTERNATIONAL STANDARD ISO 12636:2018(E)
Graphic technology — Blankets for offset printing
1 Scope

This document defines vocabulary and specifies test methods, characteristics, ordering and labelling

information for blankets for offset printing. This document does not apply to un-tensioned or unclamped

blankets for offset printing, nor offset printing sleeves used on gapless presses.

2 Normative references
There are no normative references in this document.
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:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
across cylinder direction

direction of the side of the blanket (3.4) as intended to be applied perpendicular to the direction of

rotation
3.2
around-the-cylinder direction

direction of the side of the blanket (3.4) as intended to be applied in the direction of the rotation

3.3
average thickness
mean of thickness measurements
3.4
blanket

composite body, consisting of coated carrier material, e.g. fabric, used for transfer of the printing ink

from the form onto the material to be printed on, e.g. for offset printing
3.5
load at specific deflection
average stress of a blanket (3.4) under compressive force
Note 1 to entry: It is expressed in kPa.
3.6
compressibility–deflection

average thickness reduction of a blanket (3.4) measured under a specific pressure

Note 1 to entry: It is expressed in millimetres.
© ISO 2018 – All rights reserved 1
---------------------- Page: 9 ----------------------
SIST ISO 12636:2018
ISO 12636:2018(E)
3.7
compressibility–indentation

average depth of impression, I, in a blanket (3.4) measured under a specific pressure

Note 1 to entry: It is expressed in millimetres or as percentage indentation, I .

3.8
elongation

increase of the dimension in the around-the-cylinder direction (3.2) of a blanket (3.4) under

longitudinal stress

Note 1 to entry: It is expressed in percentage of the length at a specified force per width.

3.9
packing
underlay material placed under the blanket (3.4)
3.10
printing surface
side of the blanket (3.4) that is used for the transfer of printing ink
3.11
shrinkage

decrease in thickness due to mechanical forces and decrease in all dimensions due to exposure of the

blanket printing surface to a liquid

Note 1 to entry: It is expressed as a percentage of the original blanket thickness, or as an absolute thickness

decrease in millimetres.
3.12
sizes
dimensions (thickness, width and length) of a cut ready-to-use blanket (3.4)
3.13
swelling

increase in thickness due to exposure of the blanket printing surface to a liquid

Note 1 to entry: It is expressed as a percentage of the original blanket thickness or as an absolute thickness

increase in millimetres.
3.14
tensile strength

force per unit width required for breaking a blanket (3.4) under longitudinal stress in the around-the-

cylinder direction (3.2)
3.15
thickness variation
difference between the greatest and the smallest thickness value in millimetres
3.16
surface texture
average roughness of blanket surface, R
Note 1 to entry: It is expressed in micrometres.
4 Requirements
4.1 Information

The compatibility of the blankets to either conventional, dual use or ultraviolet (UV) inks shall be

documente
...

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