SIST EN ISO 5263-3:2005

Pulps - Laboratory wet disintegration - Part 3: Disintegration of mechanical pulps at > 85 degrees C (ISO 5263-3:2004)

ISO 5263-3:2004 specifies an apparatus and the procedures for the laboratory wet disintegration of mechanical pulps that exhibit latency. This apparatus and procedure are required for preparation of the test portion in a number of other International Standards dealing with pulps.
ISO 5263-3:2004 is applicable to all kind of mechanical pulps (i.e. mechanical, semi-chemical and chemo-mechanical pulps) exhibiting latency. Mechanical pulps not exhibiting latency shall be disintegrated according to ISO 5263-2.
The procedure specified in ISO 5263-2 should be used to disintegrate all mechanical pulps to be measured for brightness.

Faserstoffe - Nassaufschlagen im Labor - Teil 3: Aufschlagen von Holzstoff bei >85 grad C (ISO 5263-3:2004)

Dieser Teil der ISO 5263 legt ein Laborgerät und Verfahren zum Nassaufschlagen von Holzstoffen im Labor mit Latenz fest. Das Gerät und das Verfahren finden auch zur Probenvorbereitung in mehreren anderen Internationalen Normen zum Thema Faserstoffe Anwendung.
ISO 5263-3 ist für alle Holzstoffarten (d. h. Holzstoffe, Halbzellstoffe und chemische Holzstoffe) mit Latenz anwendbar. Die Holzstoffe müssen nach ISO 5263-2 aufgeschlagen werden.
Das in ISO 5263-2 festgelegte Verfahren sollte auch zum Aufschlagen all der Holzstoffarten verwendet werden, die auf den Weißgrad untersucht werden.
ANMERKUNG   Der Weißgrad wird durch das Vorhandensein von Latenz nicht signifikant beeinflusst; bei der Heißzerfaserung  von Holzstoffen kann es jedoch zu signifikanten Weißgradverlusten kommen.

Pâtes - Désintégration humide en laboratoire - Partie 3: Désintégration des pâtes mécaniques a > 85 degrés C (ISO 5263-3:2004)

Vlaknine - Laboratorijsko razvlaknjevanje v mokrem - 3. del: Razvlaknjevanje mehanskih vlaknin pri > 85 stopinjah C (ISO 5263-3:2004)

General Information

• Status: Withdrawn
• Publication Date: 31-Jan-2005
• Withdrawal Date: 08-May-2023
• ICS: 85.040 - Pulps
• Technical Committee: VPK - Pulp, paper, board and products
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 06-Apr-2023
• Due Date: 29-Apr-2023
• Completion Date: 09-May-2023
• Ref Project: EN ISO 5263-3:2004 - Pulps - Laboratory wet disintegration - Part 3: Disintegration of mechanical pulps at > 85 degrees C (ISO 5263-3:2004)

Relations

• Replaces: SIST EN ISO 5263:2000 - Pulps - Laboratory wet disintegration (ISO 5263:1995)
• Effective Date: 22-Dec-2008
• Replaced By: SIST EN ISO 5263-3:2023 - Pulps - Laboratory wet disintegration - Part 3: Disintegration of mechanical pulps at ≥ 85°C (ISO 5263-3:2023)
• Effective Date: 01-Jun-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 5263-3:2005
01-februar-2005
1DGRPHãþD
SIST EN ISO 5263:2000
Vlaknine - Laboratorijsko razvlaknjevanje v mokrem - 3. del: Razvlaknjevanje
mehanskih vlaknin pri > 85 stopinjah C (ISO 5263-3:2004)
Pulps - Laboratory wet disintegration - Part 3: Disintegration of mechanical pulps at > 85
degrees C (ISO 5263-3:2004)
Faserstoffe - Nassaufschlagen im Labor - Teil 3: Aufschlagen von Holzstoff bei >85 grad
C (ISO 5263-3:2004)
Pâtes - Désintégration humide en laboratoire - Partie 3: Désintégration des pâtes
mécaniques a > 85 degrés C (ISO 5263-3:2004)
Ta slovenski standard je istoveten z: EN ISO 5263-3:2004
ICS:
85.040 Vlaknine Pulps
SIST EN ISO 5263-3:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 5263-3:2005

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SIST EN ISO 5263-3:2005
EUROPEAN STANDARD
EN ISO 5263-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2004
ICS 85.040 Supersedes EN ISO 5263:1997
English version
Pulps - Laboratory wet disintegration - Part 3: Disintegration of
mechanical pulps at > 85 degrees C (ISO 5263-3:2004)
Pâtes - Désintégration humide en laboratoire - Partie 3:
Désintégration des pâtes mécaniques à > 85 degrés C
(ISO 5263-3:2004)
This European Standard was approved by CEN on 2 August 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5263-3:2004: E
worldwide for CEN national Members.

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SIST EN ISO 5263-3:2005
EN ISO 5263-3:2004 (E)


Foreword

This document (EN ISO 5263-3:2004) has been prepared by Technical Committee ISO/TC 6
"Paper, board and pulps" in collaboration with Technical Committee CEN/TC 172 "Pulp, paper
and board", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by March 2005, and conflicting national
standards shall be withdrawn at the latest by March 2005.

This document supersedes EN ISO 5263 :1997.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Cyprus,
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice

The text of ISO 5263-3:2004 has been approved by CEN as EN ISO 5263-3:2004 without any
modifications.
2

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SIST EN ISO 5263-3:2005


INTERNATIONAL ISO
STANDARD 5263-3
First edition
2004-09-01


Pulps — Laboratory wet disintegration —
Part 3:
Disintegration of mechanical pulps at
WWWW 85 °C
Pâtes — Désintégration humide en laboratoire —
Partie 3: Désintégration des pâtes mécaniques à W 85 °C




Reference number
ISO 5263-3:2004(E)
©
ISO 2004

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SIST EN ISO 5263-3:2005
ISO 5263-3:2004(E)
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All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO 2004 – All rights reserved

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SIST EN ISO 5263-3:2005
ISO 5263-3:2004(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Definition. 1
4 Apparatus. 2
5 Preparation of test portion. 2
6 Procedure. 3
7 Test report. 4
Annex A (normative) Construction of the Standard disintegrator . 5
Annex B (normative) Checking the Standard disintegrator. 7
Annex C (normative) Circulation disintegrator . 8
Annex D (informative) The effect of latency in mechanical pulps. 9
Bibliography . 11

© ISO 2004 – All rights reserved iii

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SIST EN ISO 5263-3:2005
ISO 5263-3:2004(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.
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 5263-3 was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 5,
Test methods and quality specifications for pulps.
This first edition cancels and partially replaces ISO 5263:1995 which has been technically revised. In the
revision, ISO 5263 has been divided into three parts; Part 1 which is applicable to chemical pulps, Part 2
which is applicable to mechanical pulps without latency and Part 3 which is applicable to mechanical pulps
exhibiting latency. In Part 3, an informative Annex has been inserted describing the effect of latency in
mechanical pulps.
ISO 5263 consists of the following parts, under the general title Pulps — Laboratory wet disintegration:
— Part 1: Disintegration of chemical pulps
— Part 2: Disintegration of mechanical pulps at 20 °C
— Part 3: Disintegration of mechanical pulps at W 85 °C

iv © ISO 2004 – All rights reserved

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SIST EN ISO 5263-3:2005
INTERNATIONAL STANDARD ISO 5263-3:2004(E)

Pulps — Laboratory wet disintegration —
Part 3:
Disintegration of mechanical pulps at WWWW 85 °C
1 Scope
This part of ISO 5263 specifies an apparatus and the procedures for the laboratory wet disintegration of
mechanical pulps that exhibit latency. This apparatus and procedure are required for preparation of the test
portion in a number of other International Standards dealing with pulps.
ISO 5263-3 is applicable to all kind of mechanical pulps (i.e. mechanical, semi-chemical and chemi-
mechanical pulps) exhibiting latency. Mechanical pulps not exhibiting latency shall be disintegrated according
to ISO 5263-2.
The procedure specified in ISO 5263-2 should be used to disintegrate all mechanical pulps to be measured for
brightness.
NOTE Brightness is not significantly altered by the presence of latency; however, hot disintegration of mechanical
pulps can lead to significant loss of brightness.
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 638, Pulps — Determination of dry matter content
ISO 4119, Pulps — Determination of stock concentration
ISO 14487, Pulps — Standard water for physical testing
3 Definition
For the purposes of this part of ISO 5263, the following definitions apply.
3.1
disintegration of mechanical pulp
mechanical treatment in water so that interlaced fibres, which were free in the pulp stock, are again separated
from one another without appreciably changing their structural properties
3.2
latency
condition of a mechanical pulp in which some of its properties are inhibited and require disintegration of the
pulp at elevated temperature to be developed
© ISO 2004 – All rights reserved 1

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SIST EN ISO 5263-3:2005
ISO 5263-3:2004(E)
NOTE 1 Latency is due to the distorted form of the fibres, acquired in mechanical processing, especially at high
consistency, and subsequently preserved upon cooling at high consistency. It is assumed that its preservation is caused
by the hardening of the lignin.
NOTE 2 The degree of latency in a pulp is generally related to the consistency and energy applied during the
mechanical processing.
3.3
latency removal
procedure using a combination of mechanical treatment, i.e. disintegration, and heat treatment using a
temperature exceeding the softening temperature of lignin
NOTE In this part of ISO 5263, the temperature for latency removal is stated to be not less than 85 °C.
4 Apparatus
Ordinary laboratory apparatus and the following:
4.1 Disintegrator with heat supply or hot-water supply capable of maintaining a temperature of W 85 °C in
the suspension during the entire disintegration procedure. Use either the Standard disintegrator (4.1.1) or the
Circulation disintegrator (4.1.2).
Since the two types of disintegrator do not treat the fibres in the same way (see [6]), the disintegrator used
must be reported.
4.1.1 Standard disintegrator, constructed as described in Annex A. For latency removal, the Standard
disintegrator shall be equipped with an electrically heated container or shall have a supply of hot water,
capable of keeping the temperature of the fibre-water suspension at the temperature stated in 4.1.
NOTE 1 The procedure for checking the Standard disintegrator is given in Annex B.
NOTE 2 For safety reasons, it is not recommended to use a Standard disintegrator intended for disintegration at 20 °C
and an electric hot plate for boiling water.
4.1.2 Circulation disintegrator, of Domtar type, constructed as described in Annex C. The disintegrator
shall have a supply of water of a temperature of between 90 °C and 95 °C.
There must be a means of running the pump for short intervals of time. To prevent damage to the pump, the
pump must not run dry for more than 3 s.
4.2 Balance, capable of weighing with an accuracy of 0,2 g.
4.3 Standard water, for physical testing, as specified in ISO 14487.
5 Preparation of test portion
If the pulp is wet or air-dry, determine the dry matter content in accordance with ISO 638. If the pulp is in slush
form, determine the dry matter content in accordance with ISO 4119.
If the concentration of a slush pulp sample is less than 1,5 % by mass, thicken it to the appropriate volume,
carefully avoiding the loss of fines. This is most easily done by sedimentation of the suspension and removing
a part of the water phase or by dewatering through a filter paper on a Büchner funnel.
Us
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