Tissue paper and tissue products - Part 5: Determination of wet tensile strength (ISO 12625-5:2005)

This part of prEN 12625 specifies a test method for the determination of the wet tensile strength of tissue paper and tissue products after wetting using a tensile testing apparatus operating with a constant rate of elongation.

Tissue-Papier und Tissue-Produkte - Teil 5: Bestimmung der breitenbezogenen Nassbruchkraft (ISO 12625-5:2005)

Dieser Teil der ISO 12625 legt ein Prüfverfahren zur Bestimmung der breitenbezogenen Nassbruchkraft von Tissue-Papier und Tissue-Produkten nach dem Wässern fest. Hierfür wird ein Zugprüfgerät, das mit konstanter Dehngeschwindigkeit arbeitet, verwendet.
Momentan sind zwei Arten von Zugprüfgeräten im Handel erhältlich. Bei dem einen Zugprüfgerät wird die Probe vertikal, beim anderen horizontal positioniert. Dieser Teil der ISO 12625 gilt für beide. Bei vertikalen Zugprüfgeräten erfolgt das Wässern mit Hilfe eines Gerätes, das in der unteren Einspannklemme des Zugprüfgerätes, der so genannten Finch-Eintauchvorrichtung, eingespannt wird. Bei horizontalen Zugprüfgeräten wird die Eintauchvorrichtung zwischen die Klemmen platziert.
Darüber hinaus wird ausdrücklich darauf hingewiesen, dass zur Erkennung von Unreinheiten und Verunreinigungen in Tissue-Papier und Tissue-Produkten ISO 15755 angewendet werden sollte:
Für die Bestimmung des Feuchtegehaltes in Tissue-Papier und Tissue-Produkten sollte ISO 287 angewendet werden.

Papier tissu et produits en tissu - Partie 5: Détermination de la résistance a la rupture par traction a l'état humide (ISO 12625-5:2005)

L'ISO 12625-5:2005 spécifie une méthode d'essai pour la détermination de la résistance à la rupture par traction à l'état humide du papier tissue et des produits tissues, après immersion dans l'eau, en utilisant un appareil d'essai de traction fonctionnant à une vitesse d'allongement constante.

Tissue papir in proizvodi iz tissue papirja - 5. del: Ugotavljanje mokre natezne trdnosti (ISO 12625-5:2005)

General Information

Status
Withdrawn
Publication Date
30-Jun-2005
Withdrawal Date
19-Feb-2017
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
17-Feb-2017
Due Date
12-Mar-2017
Completion Date
20-Feb-2017

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SLOVENSKI STANDARD
SIST EN ISO 12625-5:2005
01-julij-2005
1DGRPHãþD
SIST EN 12625-5:2000
Tissue papir in proizvodi iz tissue papirja - 5. del: Ugotavljanje mokre natezne
trdnosti (ISO 12625-5:2005)

Tissue paper and tissue products - Part 5: Determination of wet tensile strength (ISO

12625-5:2005)
Tissue-Papier und Tissue-Produkte - Teil 5: Bestimmung der breitenbezogenen
Nassbruchkraft (ISO 12625-5:2005)

Papier tissu et produits en tissu - Partie 5: Détermination de la résistance a la rupture par

traction a l'état humide (ISO 12625-5:2005)
Ta slovenski standard je istoveten z: EN ISO 12625-5:2005
ICS:
85.080.20 Tissue papir Tissue paper
SIST EN ISO 12625-5:2005 en

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

---------------------- Page: 1 ----------------------
SIST EN ISO 12625-5:2005
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SIST EN ISO 12625-5:2005
EUROPEAN STANDARD
EN ISO 12625-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2005
ICS 85.080 Supersedes EN 12625-5:1999
English version
Tissue paper and tissue products - Part 5: Determination of wet
tensile strength (ISO 12625-5:2005)

Papier tissu et produits en tissu - Partie 5: Détermination Tissue-Papier und Tissue-Produkte - Teil 5: Bestimmung

de la résistance à la rupture par traction à l'état humide der breitenbezogenen Nassbruchkraft (ISO 12625-5:2005)

(ISO 12625-5:2005)
This European Standard was approved by CEN on 21 March 2005.

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

© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12625-5:2005: E

worldwide for CEN national Members.
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SIST EN ISO 12625-5:2005
EN ISO 12625-5:2005 (E)
Foreword

This document (EN ISO 12625-5:2005) has been prepared by Technical Committee CEN/TC 172

"Pulp, paper and board", the secretariat of which is held by DIN, in collaboration with Technical

Committee ISO/TC 6 "Paper, board and pulps”.
This document supersedes EN 12625-5:1999.

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 October 2005, and conflicting national

standards shall be withdrawn at the latest by October 2005.

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.
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SIST EN ISO 12625-5:2005
INTERNATIONAL ISO
STANDARD 12625-5
First edition
2005-04-15
Tissue paper and tissue products
Part 5:
Determination of wet tensile strength
Papier tissu et produits en tissu
Partie 5: Détermination de la résistance à la rupture par traction à l'état
humide
Reference number
ISO 12625-5:2005(E)
ISO 2005
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SIST EN ISO 12625-5:2005
ISO 12625-5:2005(E)
PDF disclaimer

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© ISO 2005

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
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Published in Switzerland
ii © ISO 2005 – All rights reserved
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SIST EN ISO 12625-5:2005
ISO 12625-5:2005(E)
Contents Page

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

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

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

3 Terms and definitions........................................................................................................................... 2

4 Principle ................................................................................................................................................. 2

5 Apparatus............................................................................................................................................... 2

6 Conditioning .......................................................................................................................................... 5

7 Preparation ............................................................................................................................................ 5

8 Procedure............................................................................................................................................... 6

9 Calculation............................................................................................................................................. 9

10 Test report.............................................................................................................................................. 9

11 Precision .............................................................................................................................................. 10

Bibliography ..................................................................................................................................................... 12

© ISO 2005 – All rights reserved iii
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SIST EN ISO 12625-5:2005
ISO 12625-5:2005(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 12625-5 was prepared by the European Committee for Standardization (CEN) Technical Committee

CEN/TC 172, Pulp, paper and board, in collaboration with Technical Committee ISO/TC 6, Paper, board and

pulps, Subcommittee SC 2, Test methods and quality specifications for paper and board, in accordance with

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

This first edition cancels and replaces EN 12625-5:1999 which has been technically revised.

With regard to EN 12625-5:1999, the following changes have been made:
a) addition of information concerning the precision of the test method;
b) editorial updating.

ISO 12625 consists of the following parts, under the general title Tissue paper and tissue products:

 Part 1: General guidance on terms

 Part 3: Determination of thickness, bulking thickness and apparent bulk density

 Part 4: Determination of tensile strength, stretch at break and tensile energy absorption

 Part 5: Determination of wet tensile strength
 Part 6: Determination of grammage
 Part 7: Determination of optical properties

 Part 8: Water absorption time and water absorption capacity, basket immersion test method

 Part 9: Determination of ball burst strength
iv © ISO 2005 – All rights reserved
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SIST EN ISO 12625-5:2005
INTERNATIONAL STANDARD ISO 12625-5:2005(E)
Tissue paper and tissue products
Part 5:
Determination of wet tensile strength
1 Scope

This part of ISO 12625 specifies a test method for the determination of the wet tensile strength of tissue paper

and tissue products after soaking with water, using a tensile-strength-testing apparatus operating with a constant

rate of elongation.

Currently, two types of tensile-strength testers are commercially available, one where the test piece is positioned

vertically and, for the other, horizontally. This part of ISO 12625 applies for both. For vertical tensile-strength

testers, a device which is held in the lower grip of the tensile-strength tester, called a Finch Cup, is used to

achieve the wetting. For horizontal tensile-strength testers, the soaking device is placed between the clamps.

It is expressly stated that the detection of impurities and contraries in tissue paper and tissue products should

be applied according to ISO 15755.

For the determination of moisture content in tissue paper and tissue products, ISO 287 should be applied.

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 186, Paper and board — Sampling to determine average quality

ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for

monitoring the atmosphere and conditioning of samples

ISO 1924-2, Paper and board — Determination of tensile properties — Part 2: Constant rate of elongation

method

ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/compression

testing machines — Verification and calibration of the force-measuring system

ISO 12625-1, Tissue paper and tissue products — Part 1: General guidance on terms

ISO 12625-4, Tissue paper and tissue products — Part 4: Determination of tensile strength, stretch at break and

tensile energy absorption
© ISO 2005 – All rights reserved 1
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SIST EN ISO 12625-5:2005
ISO 12625-5:2005(E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 12625-1 and the following apply.

3.1
wet tensile strength

maximum tensile force per unit width that a test piece soaked with water will withstand before breaking in a

tensile test
NOTE The wet tensile strength is expressed in newtons per metre.
3.2
wet-tensile-strength retention

ratio, expressed as a percentage, of the tensile strength of the wet test piece to the tensile strength of the

same test piece in the dry, conditioned state
4 Principle

A test piece of tissue paper or tissue product of given dimensions, soaked in water for a given period of time

under specified conditions, is stretched (elongated) to break at a constant rate of elongation, using a

tensile-strength-testing apparatus that measures and records the tensile force as a function of the elongation of

the test piece.

The test can be carried out by a vertical or a horizontal tensile-strength tester.

In order to wet the test pieces for a vertical tensile-strength tester, a device, called a Finch Cup, which is held

to the lower clamp, is used; while for a horizontal tensile-strength tester, a soaking cup is inserted between the

clamps.

From the wet tensile strength and the tensile strength of the same sample in the dry conditioned state, the

wet-tensile-strength retention can be calculated.
5 Apparatus
5.1 Vertical tensile-strength tester
5.1.1 Tensile-strength-testing apparatus

Tensile-strength-testing apparatus shall be in accordance with ISO 1924-2. It is capable of stretching a test

piece of tissue paper or tissue product of given dimensions, at a constant rate of elongation of

(50 ± 2) mm/min, and recording the tensile force as a function of elongation on a strip chart recorder or any

equivalent device.

The force-measuring system shall measure loads with an accuracy of ± 1 % of the reading or ± 0,1 N,

whichever is the greater. It shall be calibrated and verified in accordance with the requirements of ISO 7500-1.

5.1.2 Tensile-tester clamps

The tensile-strength-testing apparatus (5.1.1) shall have an upper clamp with a minimum of 50 mm width, for

holding both ends of the test piece firmly and without slippage. To avoid damaging the test pieces, the clamp

surfaces that touch the pieces should be smooth and have rounded edges, i.e. free from burrs. The lower clamp

shall be designed to grip the Finch Cup soaking device (5.1.3) firmly. The clamps shall have means for adjusting

the clamping force.
2 © ISO 2005 – All rights reserved
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SIST EN ISO 12625-5:2005
ISO 12625-5:2005(E)

During the test, the upper clamping line and the Finch Cup soaking device rod (5.1.3) shall be parallel to each

other. They shall also be perpendicular to the direction of the applied tensile force and to the length axis of the

test piece.

The test span length, which is defined as the distance between the clamping line and the top surface line of

the cylindrical rod of the Finch Cup soaking device, shall be adjustable to ± 1 mm (see Figure 1).

Dimensions in millimetres
Key
= (100 ± 2) mm
= total span length
= (50 ± 1) mm
= test span length
Figure 1 — Positioning of a test piece
5.1.3 Finch Cup soaking device

A Finch Cup soaking device (see Figure 2) consists of a support system that holds a horizontal cylindrical rod of

(5 ± 0,1) mm diameter, and approximately 60 mm length, and a water container.

The water container shall be constructed such that it can be moved vertically and locked in a raised position. In

the locked raised position, the water in the container shall completely surround the cylindrical rod, which i

...

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