oSIST prEN ISO 12643-4:2014

Graphic technology - Safety requirements for graphic technology equipment and systems - Part 4: Converting equipment and systems (ISO/DIS 12643-4:2014)

This standard provides safety requirements for the design and construction of converting equipment used in the package printing, converting and graphic technology industries. It is applicable to converting equipment not covered by other parts of EN ISO 12643. It is intended to be used in conjunction with the general requirements given in EN ISO 12643-1.

Graphische Technik — Sicherheitsanforderungen an Ausrüstungen und Systeme der graphischen Technik — Teil 4: Ausrüstungen und Systeme der Papierverarbeitung (ISO/DIS 12643-4:2014)

Technologie graphique - Exigences de sécurité pour les systèmes et l'équipement de technologie graphique - Partie 4: Systèmes et équipement de façonnage (ISO/DIS 12643-4:2014)

Grafična tehnologija - Varnostne zahteve za grafično tehnološko opremo in sisteme - 4. del: Oprema in sistemi za predelavo in oplemenitenje (ISO/DIS 12643-4:2014)

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Sep-2014
• ICS: 37.100.10 - Reproduction equipment
• Technical Committee: GRT - Graphical technology
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 29-Jan-2019
• Due Date: 03-Feb-2019
• Completion Date: 29-Jan-2019
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: prEN ISO 12643-4 - Graphic technology - Safety requirements for graphic technology equipment and systems - Part 4: Converting equipment and systems (ISO/DIS 12643-4:2014)

Relations

• Revised: SIST EN 1010-4:2004+A1:2009 - Safety of machinery - Safety requirements for the design and construction of printing and paper converting machines - Part 4: Bookbinding, paper converting and finishing machines
• Effective Date: 01-Sep-2014
• Revised: SIST ISO 12643-4:2010 - Graphic technology - Safety requirements for graphic technology equipment and systems - Part 4: Converting equipment and systems
• Effective Date: 01-Sep-2014

Overview

prEN ISO 12643-4 / ISO/DIS 12643-4:2014 specifies safety requirements for the design and construction of converting equipment and systems used in the package printing, converting and graphic technology industries. It applies to converting machines not covered by other parts of EN ISO 12643 and is intended to be used together with the general requirements in EN ISO 12643‑1. This draft (ISO/DIS 12643‑4) was developed under ISO/CEN parallel processing and updates the 2010 edition with added verification and hazard guidance.

Key topics

The standard addresses machine safety across a wide range of converting equipment. Key technical topics and requirements include:

• Scope and conformity: applicability, how to use Part 4 with Part 1 general requirements.
• Machine types covered: corrugated-board machinery, folding-box gluer machines, pre‑feeders, in‑line machines, automatic flatbed die‑cutters, roller press die‑cutters, tube winding machines, envelope production machinery, and others.
• Hazard identification: list of significant hazards and hazard zones (Annex A, informative).
• Protective measures: requirements for guards, interlocks, emergency stops, in‑running nip protection, web diverters, splicers, and other common converting hazards.
• Verification and testing: Clause 14 introduces verification of safety requirements and/or protective measures to demonstrate conformity.
• Documentation and user information: instruction handbook content and safety information for operators, maintenance and installation.
• Structure and drafting: Clauses reorganized to align with ISO Guide 78 for machine safety standards.

Applications and who uses it

This standard is practical for stakeholders involved in the design, manufacture, procurement and safe operation of converting and packaging machinery:

• Machine designers and OEMs specifying safety features during design and construction.
• Safety engineers and risk assessors performing conformity and hazard analyses.
• Production managers and maintenance teams implementing guarding, interlocks and safe procedures.
• Compliance officers, inspectors and certification bodies assessing conformity with EN/ISO machine safety.
• Procurement and quality teams specifying safety requirements in supplier contracts for printing, converting and packaging lines.

Use cases include specifying guarding and interlock arrangements, documenting safe operating procedures, verifying protective measures during commissioning, and guiding machine modifications or retrofits to meet current safety expectations.

Related standards

• EN ISO 12643‑1 - General requirements (to be used in conjunction with Part 4).
• Other parts of ISO 12643 series: Part 2 (prepress/press), Part 3 (binding/finishing), Part 5 (stand‑alone platen presses).
• ISO Guide 78 - Guidance used for structuring safety standards (referenced for drafting and presentation).

Keywords: ISO 12643-4, prEN ISO 12643-4, graphic technology, converting equipment, safety requirements, machine safety, packaging machinery, printing and converting, EN ISO 12643-1.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2014
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VLVWHPHGHO2SUHPDLQVLVWHPL]DSUHGHODYRLQRSOHPHQLWHQMH,62',6

Graphic technology - Safety requirements for graphic technology equipment and systems
- Part 4: Converting equipment and systems (ISO/DIS 12643-4:2014)
Technologie graphique - Exigences de sécurité pour les systèmes et l'équipement de
technologie graphique - Partie 4: Systèmes et équipement de façonnage (ISO/DIS 12643
-4:2014)
Ta slovenski standard je istoveten z: prEN ISO 12643-4
ICS:
37.100.10 Reprodukcijska oprema Reproduction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 12643-4
ISO/TC 130 Secretariat: SAC
Voting begins on: Voting terminates on:
2014-05-22 2014-10-22
Graphic technology — Safety requirements for graphic
technology equipment and systems —
Part 4:
Converting equipment and systems
Technologie graphique — Exigences de sécurité pour les systèmes et l’équipement de technologie
graphique —
Partie 4: Systèmes et équipement de façonnage
ICS: 37.100.10
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments
received, will be submitted to a parallel two-month approval vote in ISO and
THIS DOCUMENT IS A DRAFT CIRCULATED
formal vote in CEN.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 12643-4:2014(E)
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 SUPPORTING DOCUMENTATION. ISO 2014

ISO/DIS 12643-4:2014(E)
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as
permitted under the applicable laws of the user’s country, neither this ISO draft nor any extract
from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
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ii © ISO 2014 – All rights reserved

ISO/DIS 12643-4
Contents Page
Foreword . v
Introduction . vi
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 2
4  Conformity with this part of ISO 12643 . 2
5  Equipment covered by this part of ISO 12643 . 2
5.1  General . 2
5.2  Machines used primarily in a converting operation . 2
5.3  Machines used in both printing and converting processes . 2
6  Machinery for the production of corrugate board . 3
6.1  All machines . 3
6.2  Unwinding stations . 5
6.3  Splicers . 6
6.4  Preheater . 8
6.5  Single facer. 10
6.6  Inclined belt conveyor . 15
6.7  Bridge . 15
6.8  Braking and web aligning section . 16
6.9  Gluing machine . 16
6.10  Heating and pulling section . 16
6.11  Rotary shear unit . 18
6.12  Pulling unit . 19
6.13  Slitter-scorer units . 20
6.14  Web diverter . 21
6.15  Sheeters . 21
6.16  Stacker devices . 22
7  Folding box gluer machines . 26
7.1  Entire machine . 26
7.2  Feeder . 26
7.3  Folding section . 27
7.4  Gluing section . 29
7.5  Folding belt . 29
7.6  Pressure rollers . 29
7.7  Pressing and gathering device (pressing band) . 29
8  Pre-feeders . 30
8.1  Pre-feeder with pile carrier plate . 30
8.2  Pre-feeder with pile turner . 32
9  In-line machines . 34
9.1  Entire machine . 34
9.2  Feeding unit . 35
9.3  Printing unit . 37
9.4  Slitter-scorer unit, rotary die-cutter . 38
9.5  Folding unit (folding box gluer) . 38
9.6  Taping unit. 39
9.7  Stitching unit . 39
10  Automatic flatbed die-cutting machines . 40
ISO/DIS 12643-4
10.1  Entire machine . 40
10.2  Feeder . 41
10.3  Punching section . 41
10.4  Stripping section . 42
10.5  Blank separating section, blank delivery . 42
10.6  Trimming and delivery of gripper edge . 51
11  Roller press die-cutters . 52
12  Tube winding machines . 52
12.1  Ply reels . 52
12.2  In-running nips on shaft bearings . 52
12.3  In-running nip between winding belt and winding mandrel . 52
12.4  In-running nips . 53
12.5  In-running nips between glue rollers . 53
12.6  Tube cutting and sawing section . 53
12.7  Tube transfer . 54
13  Machinery for the production of envelopes . 54
13.1  Printing unit guarding . 54
13.2  Longitudinal and cross-scoring section . 54
13.3  Form cutting section . 54
13.4  Driven guide rollers . 54
13.5  Window cutting section . 55
13.6  Window material conveying section with unwinding unit . 55
13.7  Scraper gluing unit . 55
13.8  Separating cutting section . 55
13.9  Bottom flap folding section . 56
13.10  Transport rolls . 56
13.11  Staggering wheel . 56
13.12  Roller gluing unit. 57
13.13  Hot air dryers . 58
13.14  Separation roller before aligner section . 58
13.15  Aligner section . 59
13.16  Seal flap folding section . 59
13.17  Separating disc delivery . 59
13.18  Starting the machine with interlocking guards open . 60
14  Verification of safety requirements and/or protective measures . 60
15  Instruction handbook . 60
15.1  Corrugated board machinery . 60
15.2  Machines for the production of envelopes . 61
Annex A (informative) List of significant hazards . 62
Bibliography . 65

iv © ISO 2014 – All rights reserved

ISO/DIS 12643-4
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12643-4 was prepared by Technical Committee ISO/TC 130, Graphic technology.
This second edition of ISO 12643-4 cancels and replaces the first edition (ISO 12643-4:2010). Significant
changes incorporated into this second edition include, but are not limited to the following:
 addition of Clause 14, Verification of safety requirements and/or protective measures;
 addition of Annex A listing significant hazards and hazard zones; and
 reorganization of clauses to align with requirements in ISO Guide 78, Safety of machinery – Rules for
drafting and presentation of safety standards.
It is the intent of ISO/TC 130 that there be a transition period between the first and second editions of
ISO 12643-4. The user of this part of ISO 12643 is referred to Clause 4 of this standard for guidance in this
area.
As from 201x-01-01, ISO 12643-4:2014 will cancel and replace ISO 12643-4:2010. Accordingly, as from
2014-01-01, only ISO 12643-1:2014 will be applicable to new equipment manufactured.
ISO 12643 consists of the following parts, under the general title Graphic technology — Safety requirements
for graphic technology equipment and systems:
 Part 1: General requirements
 Part 2: Prepress and press equipment and systems
 Part 3: Binding and finishing equipment and systems
 Part 4: Converting equipment and systems
 Part 5: Stand-alone platen presses
ISO/DIS 12643-4
Introduction
[1]
This part of ISO 12643 is a type-C standard as stated in ISO 12100 .

The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are covered
are indicated in the Scope and Clause 5 of this document.

When requirements of this type-C standard are different from those which are stated in type-A or B standards, the
requirements of this type-C standard take precedence over the requirements of the other standards for machines
that have been designed and built according to the requirements of this type-C standard.

The purpose of this part of ISO 12643 is to reduce the risk of injury to operating personnel working on
converting equipment.
This part of ISO 12643 provides requirements for the design and construction of converting equipment used in
the package printing, converting and graphic technology industries. It covers equipment not addressed by the
other parts of ISO 12643. It is intended to be used in conjunction with ISO 12643-1 and provides additional
requirements that are specific to converting equipment.
During the development of this part of ISO 12643, existing relevant standards of other countries were taken
into consideration. An effort has been made to take into consideration the requirements of many countries,
recognizing that national standards or laws may dictate national requirements. Cases where a national
requirement was known to differ from this part of ISO 12643 have been noted.
This part of ISO 12643 was developed to harmonize the following US and European safety standards:
ANSI/PMMI B155.1, Safety Requirements for Packaging Machinery and Packaging-Related Converting
Machinery
EN 1010-4, Safety of machinery — Safety requirements for the design and construction of printing and paper
converting machines — Part 4: Bookbinding, paper converting and finishing machines
EN 1010-5, Safety of machinery — Safety requirements for the design and construction of printing and paper
converting machines — Part 5: Machines for the production of corrugated board and machines for the
conversion of flat and corrugated board

vi © ISO 2014 – All rights reserved

DRAFT INTERNATIONAL STANDARD ISO/DIS 12643-4

Graphic technology — Safety requirements for graphic
technology equipment and systems —
Part 4:
Converting equipment and systems
1 Scope
This part of ISO 12643 provides safety requirements for the design and construction of converting equipment
used in the package printing, converting and graphic technology industries. It is applicable to converting
equipment not covered by other parts of ISO 12643. It is intended to be used in conjunction with the general
requirements given in ISO 12643-1.
2 Normative references
The following referenced documents are indispensable for the application 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 12643-1, Graphic technology — Safety requirements for graphic technology equipment and systems —
Part 1: General requirements
ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human responses to
contact with surfaces — Part 1: Hot surfaces
ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for
design
ISO 13850, Safety of machinery — Emergency stop — Principles for design
ISO 13855, Safety of machinery — Positioning of protective equipment with respect to the approach speeds of
parts of the human body
ISO 13857, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and
lower limbs
ISO 14119, Safety of machinery — Interlocking devices associated with guards — Principles for design and
selection
ISO 14122-3, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders
and guard-rails
IEC 60529, Degrees of protection provided by enclosures (IP code)
IEC 62061, Safety of machinery — Functional safety of safety-related electrical, electronic and programmable
electronic control systems
EN 619, Continuous handling equipment and systems — Safety and EMC requirements for equipment for
mechanical handling of unit loads
ISO/DIS 12643-4
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12643-1 apply.
4 Conformity with this part of ISO 12643
In order to claim conformity with this part of ISO 12643, all equipment manufactured as of 201x-01-01 shall be
in accordance with this second edition of ISO 12643-4 rather than ISO 12643-4:2010.
NOTE Although this second version of ISO 12643-4 cancels and replaces the first edition (ISO 12643-4:2010), a
transition period might be necessary for equipment manufactured prior to 2014-01-01. To meet this need, it is noted that
both versions of ISO 12643-4 can be purchased from ISO and its National Bodies.
5 Equipment covered by this part of ISO 12643
5.1 General
This part of ISO 12643 covers a variety of equipment used in printing plants and converting operations. Those
used primarily in a converting operation are listed in 5.2, while those that may be used in a printing operation
covered in other parts of ISO 12643 are listed in 5.3.
5.2 Machines used primarily in a converting operation
Machines used primarily in a converting operation include the following:
 machinery for the production of envelopes;
 machinery for the production of corrugated board;
 folding-box gluer machines;
 in-line machines;
 automatic flatbed punching machines;
 tube-winding machines;
 box-making machines;
 finishing/window equipment;
 hole punching machines;
 laminating machines/laminators;
 pre-feeding/stack-turning machines.
5.3 Machines used in both printing and converting processes
Machines used in both printing and converting processes include the following:
[2]
 label printing machines (see also ISO 12643-1 and ISO 12643-2 );
[3]
 coating machines (see also ISO 12643-3 );
2 © ISO 2014 – All rights reserved

ISO/DIS 12643-4
[2]
 curing and drying machines (see also ISO 12643-2 );
[3]
 cutters, creasers and die-cutters (see also ISO 12643-3 );
 rewinding/roll equipment/slitting and rewinding equipment (see also ISO 12643-1);
[2] [4]
 embossing equipment (see also ISO 12643-2 and ISO 12643-5 );
 tension control equipment (see also ISO 12643-1).
6 Machinery for the production of corrugate board
6.1 All machines
6.1.1 General
An example of a corrugating machine is shown in Figure 1.
Dimensions in millimetres
Key
1 unwind 6 heating section 11 web diverter
2 single facer 7 pulling section 12 sheeter
3 bridge 8 rotary shears 13 upstacker
4 preheater 9 pulling unit 14 downstacker
5 gluing machine 10 slitter-scorer unit
Figure 1 — Example of a machine for the production of corrugated board
ISO/DIS 12643-4
6.1.2 Emergency stop
Emergency stop devices shall be provided on each motion control station. Emergency stop devices shall be
no more than 15 m apart.
Emergency stop devices shall stop the motion of the entire machine.
EXCEPTION — The glue rollers of the gluing unit may continue running if the hazard points on the
gluing unit are safeguarded by guards.
6.1.3 Zone control with stop/safe devices
Where stop/safe devices are provided, the following requirements apply:
 stop/safe actuators shall be marked such that they clearly indicate the section to which they apply;
 safety related parts of the control system shall comply with at least ISO 13849-1, PL d or IEC 62061, SIL
2 .
Where the machine is configured into control zones, they shall be as follows (see Figure 2):
 one control zone for each single-facer group (unwind of liner with preheater, single facer, unwind of
corrugated web);
 one control zone for the liner unwind before heating up to stacker device.
At minimum, one stop/safe device shall be provided in each control zone.
NOTE Control zones may overlap
Dimensions in millimetres
Key
1 first control zone for first single-facer group
2 second control zone for second single-facer group
3 third control zone for liner unwind up to stacker device
Figure 2 — Example of control zones
6.1.4 Access stairs and walkways
Access stairs and walkways shall comply with ISO 12643-1.
6.1.5 Steam pipes
Steam pipes that can be accessed from any working level shall be insulated up to a height of 2,70 m from the
working level for protection against contact with hot parts.
4 © ISO 2014 – All rights reserved

ISO/DIS 12643-4
6.1.6 Guarding access points between system components
Accessible areas between system components shall be guarded by means of fixed or interlocking guards in
accordance with ISO 12643-1 if a hazard point can be reached, e.g. the area between a gluing machine and a
heating and pulling section.
6.1.7 Audible start-up warning
Corrugating machines shall have an audible warning system that complies with ISO 12643-1.
6.2 Unwinding stations
6.2.1 General
Means shall be provided to ensure that reel cores, which might be stuck to a reel cone, can be safely
removed, e.g. using an automatic reel core ejector that pushes the core away from the cone.
6.2.2 Safeguarding automatic reel loading
The area where automatic reel loading takes place shall be safeguarded in accordance with ISO 12643-1.
See Figure 3 for an illustration of the positioning of electro-sensitive protective devices (ESPDs) for this
equipment in аccordance with the requirements of ISO 12643-1.
Dimensions in millimetres
Key
1 ESPD
2 photoelectric beam of the ESPD
3 additional ESPD
4 material reel
Figure 3 — Unwinding station, automatic reel loading
ISO/DIS 12643-4
6.2.3 Chucking cones and lifting arms
The hold-to-run speeds for inserting the chucking cones and moving the lifting arms may be increased to
15 m/min maximum if the hold-to-run buttons are located at a minimum distance of 850 mm from the lifting
arms.
6.2.4 Braking systems
The blowers for the braking systems on unwinding stations shall have at least the degree of protection IP 23,
as specified in IEC 60529. Accumulation of inflammable dust in the brakes shall be prevented.
NOTE The accumulation of inflammable dust in the brakes can be reduced if the louvres provided in the ventilator
housing open to the bottom while the lifting arms are in operating position.
6.3 Splicers
6.3.1 Guarding hazard points
On splicers, any hazard points between the dancer roller carriage and guide rollers, and between the dancer
roller and fixed parts of the machine shall be avoided by design measures or be safeguarded (see Figure 4).
If safeguarding by distance, the following requirements apply:
 a minimum distance of 25 mm if the hazard points are at a height greater than 2,20 m;
 a minimum distance of 120 mm if the hazard points are at a height less than or equal to 2,20 m.
Safeguarding may also be achieved by the use of guards in accordance with ISO 12643-1 or safety devices
with approach reaction (e.g. trip devices, pressure-sensitive mats, electro-sensitive devices).
6.3.2 Dancer roller
The movement of the dancer roller into position for web threading shall be safeguarded.
Where hold-to-run control is used for safeguarding, the hold-to-run speed shall not exceed 15 m/min.
The in-running nips on the dancer roll carriage wheels shall be safeguarded by fixed guards that meet the
requirements of ISO 12643-1.
6 © ISO 2014 – All rights reserved

ISO/DIS 12643-4
Key
1 paper web
2 guide rollers
3 dancer roller
4 gluing unit
Figure 4 — Splicer
6.3.3 Splicers
On splicers, hazard points between the movable suction bar and fixed machine parts shall be prevented by
safety measures or be safeguarded (see Figure 4). Safeguarding can be achieved by one or more of the
following measures:
 providing a minimum distance of 25 mm for hazard points above 2,20 m and of 120 mm for heights less
than or equal to 2,20 m;
 a hold-to-run control meeting the requirements of ISO 12643-1, if it is possible to observe the hazard
points and hazard zones from the point of operation of the hold-to-run control;
 limiting the force of the movable glue bar to 300 N and the travel speed of the carriage to 15 m/min.
The control panel for operating the glue bar shall be provided with an emergency stop button.
6.3.4 Knife
The cutting edge of the knife shall be safeguarded in the rest position.
6.3.5 Pneumatic and hydraulic control systems
Where pneumatic or hydraulic control systems are used for starting the cutting cycle, a safety-rated check
valve shall be supplied to ensure that the knife remains in the safe position in case of leakage or hose
breakage.
ISO/DIS 12643-4
6.3.6 Frame edges
Where the machine frame of the splicer is lower than 2 m at the sides (as measured from the floor), frame
edges shall be provided with black-yellow padding for protection against impacts.
6.3.7 Splicers in elevated positions
If adjustment or setup of the movable suction bar cannot be accomplished from floor level, safe access shall
be provided.
6.3.8 Warning lights
A red or yellow warning light shall flash for 2 s prior to the initiation of the automatic splicing operation and
during the entire period of automatic motion. The integration of the status lights into the control system may be
single-channel, e.g. via an electronic control system.
6.4 Preheater
6.4.1 In-running nips
The in-running nips between the wrap roller and the preheating cylinder, and between the wrap roller and
fixed machine parts or guide rollers (see Figure 5), shall be safeguarded by one or more of the following
measures:
 using the minimum distance of 120 mm;
 guarding in accordance with ISO 12643-1.
Dimensions in millimetres
8 © ISO 2014 – All rights reserved

ISO/DIS 12643-4
Key
1 preheating cylinder
2 paper web
3 wrap roller
4 guide roller
Figure 5 — Preheater, side view
6.4.2 In-running nips between preheating cylinder and cross beams
The in-running nips between the preheating cylinder and any cross beam shall be safeguarded by maintaining
a minimum distance of 300 mm.
6.4.3 Wrap roller and wrap arms
The drives for the wrap roller shall be safeguarded by fixed guards completely enclosing the drives.
Rotating wrap arms (see Figure 6, item 2) shall be designed such that any openings in the wrap arms do not
create a shearing hazard.
The distance (see Figure 6, d) between the preheating cylinder and the rotating arm shall be 6 mm or less or
30 mm or more.
The hazard point between the rotating arms and the machine side frame shall be safeguarded (see Figure 6,
items 2 and 4) by one or both of the following measures:
 a hold-to-run control of at least ISO 13849-1, PL c or IEC 62061, SIL 1.;
 a minimum distance of 120 mm and designing the rotating arm or machine side in such a way that parts
of the body are deflected by the arm when rotating at its maximum circumferential speed of 5 m/min.

ISO/DIS 12643-4
Key
1 wrap roller
2 rotating arm
3 preheating cylinder
4 machine frame
d distance between preheating cylinder and rotating arm
Figure 6 — Preheater, feeding side
6.4.4 Hot surfaces
As the temperature of preheating cylinders may be higher than 65 °C, warning signs indicating the hot
surfaces shall be fitted to both sides of the preheater. Operators working near the preheater shall wear
appropriate personal protection equipment to protect against burns.
6.4.5 Walkways
If walkways with fall-off protection are located near preheaters, the distance between the fall-off protection and
movable parts of the preheater shall be at least 120 mm.
For fall-off protection and walkways, see ISO 12643-1.
6.5 Single facer
6.5.1 In-running nips
On single facers where the web is fed through a webbing slot, if it is impossible to apply the safety distances
specified in ISO 13857 (as required by ISO 12643-1), a safety distance of 300 mm shall be observed for gaps
with a width of more than 20 mm and less than or equal to 40 mm.
The in-running nips between the corrugating rollers and fixed machine parts shall be safeguarded by fixed
guards. The hazard point between the corrugating roller and the cross beam with scrapers is considered to be
safeguarded if the clearance between the corrugating roller and the cross beam is at least 25 mm and the
clearance between the scrapers is no more than 60 mm (see Figure 7).
Dimensions in millimetres
10 © ISO 2014 – All rights reserved

ISO/DIS 12643-4
Key
1 upper corrugating roller
2 lower corrugating roller
3 scraper
4 cross beam
5 feeding of paper web
Figure 7 — Corrugating rollers with scraper (front and side views)
6.5.2 Corrugating rollers
Where corrugating rollers are removed for changing, means of transport shall be provided that allow easy and
safe changing of rollers.
When noise enclosures are used, they shall be designed in such a way that loading and unloading of the
corrugating rollers is not impeded.
6.5.3 Hazard points during roller change
Any hazard points that can be accessed after removal of, or during changing of, corrugating rollers shall be
safeguarded in accordance with ISO 12643-1.
Where corrugating rollers are mounted on an indexing turret, any movement of the turret shall be under
hold-to-run control with displacement limited to a maximum of 75 mm or with a maximum operating speed of
5 m/min.
6.5.4 In-running nip between pressure roller or pressing belt and corrugating roller
The in-running nip between the pressure roller or pressing belt and the corrugating roller (see Figure 8) shall
be safeguarded by fixed guards.
The crushing point created by the lowering of the pressure roller contacting the corrugating roller shall be
safeguarded by a guard in accordance with ISO 12643-1 or by using a horizontal safety distance of 1 000 mm
from the hazard point (see Figure 8).
In-running nips on the pressing belt shall be safeguarded by fixed guards.
6.5.5 Belt breakage
On the delivery side of the single-faced corrugated web (inclined belt conveyor side), a containment device
shall be provided to eliminate the risk of injury in the case of belt breakage.

Dimensions in millimetres
ISO/DIS 12643-4
a)  Design using pressure roller b)  Design using pressing belt
Key
1 pressure roller 5 pressing belt
2 corrugating rollers 6 in-running nip
3 corrugated web 7 in-running nip on pressing belt
4 liner
Figure 8 — Corrugating unit
6.5.6 Walkway
The walkway on the inclined belt conveyor side (see Figure 9, item 7) shall have fall-off protection towards the
corrugating rollers. Cross beams provided for fall-off protection shall be at a height of 1,10 m (see Figure 9,
item 6). Intermediate rails or toe boards are not required.
6.5.7 In-running nips between glue rollers
In-running nips between glue rollers or between glue rollers and corrugating rollers that are accessible when
the gluing unit is lowered shall be safeguarded by fixed guards in accordance with ISO 12643-1.
Where lowering and raising the gluing unit is an automatic operation, the gluing unit shall not create any
hazard points; otherwise, this movement shall only be carried out under hold-to-run control at a maximum
speed of 5 m/min.
Where maintenance or cleaning operations are carried out with the interlocking guard covering the gluing unit
in an open position (see Figure 10), the glue rollers (applicator, scraper roll) shall only be allowed to rotate at a
maximum circumferential speed of 6 m/min. Glue rollers shall rotate in the same direction with no possibility of
access to an in-running nip between corrugating roller and glue roller.
Dimensions in millimetres
12 © ISO 2014 – All rights reserved

ISO/DIS 12643-4
Key
1 single facer 5 bridge
2 corrugated web 6 fall-off protection
3 lower belt 7 walkway
4 upper belt
Figure 9 — Single facer with inclined belt conveyor

Key
1 corrugating roller
2 glue applicator
3 scraper roller
ISO/DIS 12643-4
4 in-running nip
Figure 10 — Gluing unit
6.5.8 Hazard points between movable gluing unit and fixed machine parts
The hazard points between the movable gluing unit and fixed machine parts (machine frame) shall be
safeguarded by one of the following measures:
 a hold-to-run control with at least ISO 13849-1, PL c or IEC 62061, SIL 1;
 interlocking guards;
 a minimum distance of 25 mm.
6.5.9 Gluing unit cover
The cover of the gluing unit shall be designed to safeguard against gravity falls in accordance with
ISO 12643-1.
6.5.10 In-running nips between pulleys and fixed machine parts
The in-running nips between pulleys and fixed machine parts shall be safeguarded by one or both of the
following measures:
 fixed nip bars designed in suitable sections and extending across the entire working width of the pulleys;
 a minimum distance of 120 mm between pulleys or rollers and fixed machine parts.
If fixed nip bars are used, the clearance between the bar and the pulley (or roller) shall not exceed 6 mm.
6.5.11 Steam pipes
When disengaging the steam couplings, the hazardous escape of pressurized steam shall be safeguarded by
the following measures:
 coupling systems with relief valves on the ingoing and outgoing sides of the coupling; or
 devices that ensure that the steam supply is cut off and steam is allowed to escape into the work area
safely.
Protection shall be provided to ensure that steam escaping unexpectedly during set-up is directed away from
personnel.
6.5.12 Warning signs
Single facers shall be provided with signs warning of a burn risk from steam or hot parts.
6.5.13 Drives and drive shafts
Drives and drive shafts shall be safeguarded by fixed guards that contain a movable guard or gate as part of
the fixed guard. The movable guard or gate shall be interlocked in accordance with ISO 12643-1.
6.5.14 Noise enclosures
Single facers should be positioned inside noise enclosures. The doors of the enclosure shall close
automatically. The enclosure shall be provided with signs pointing out the need to wear ear protection while
14 © ISO 2014 – All rights reserved

ISO/DIS 12643-4
inside the enclosure. The web feed and take-off openings provided in the noise enclosure shall be designed to
minimize the escape of noise into the workroom.
NOTE In Europe, single facers are required to be inside noise enclosures.
Noise enclosures shall be designed such as to allow easy access for make-ready and inspection.
6.6 Inclined belt conveyor
6.6.1 In-running nips
The in-running nips on belts shall be safeguarded by fixed guards.
The in-running nip between the upper belt and the lower belt shall be safeguarded by off-setting the two
pulleys in such a way that the minimum clearance between the two rollers is 120 mm (see Figure 9).
There shall be no fixed parts in this area and the belt tension shall be sufficiently low to minimize the risk of
drawing in.
6.6.2 Accessible hazard points
Hazard points on the inclined belt conveyor that can be accessed from the bridge or the walkway shall be
safeguarded by fixed guards in accordance with ISO 12643-1.
6.7 Bridge
6.7.1 In-running nips
The in-running nips on belts shall be safeguarded by fixed guards in accordance with ISO 1264
...