ImageVerifierCode 换一换
格式:PDF , 页数:24 ,大小:893.49KB ,
资源ID:724803      下载积分:10000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-724803.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(EN ISO 12625-12-2010 en Tissue paper and tissue products - Part 12 Determination of tensile strength of perforated lines - Calculation of perforation efficiency《薄纸和薄纸产品 第12部分 穿孔线抗拉.pdf)为本站会员(花仙子)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

EN ISO 12625-12-2010 en Tissue paper and tissue products - Part 12 Determination of tensile strength of perforated lines - Calculation of perforation efficiency《薄纸和薄纸产品 第12部分 穿孔线抗拉.pdf

1、BS EN ISO12625-12:2010ICS 85.080.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTissue paper and tissueproductsPart 12: Determination of tensilestrength of perforated lines Calculation of perforation efficiency(ISO 12625-12:2010)This British Standardwas publi

2、shed under theauthority of the StandardsPolicy and StrategyCommittee on 31 March2010 BSI 2010ISBN 978 0 580 63332 4Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 12625-12:2010National forewordThis British Standard is the UK implementation of EN ISO12625-12:2010.The UK participa

3、tion in its preparation was entrusted to TechnicalCommittee PAI/11, Methods of test for paper, board and pulps.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. User

4、s are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12625-12 January 2010 ICS 85.080.20 English Version Tissue paper and tissue products - Part 12: Determination of tens

5、ile strength of perforated lines - Calculation of perforation efficiency (ISO 12625-12:2010) Papier tissue et produits tissues - Partie 12: Dtermination de la rsistance la rupture par traction des lignes de prdcoupe - Calcul de lefficacit des perforations (ISO 12625-12:2010) Tissue-Papier und Tissue

6、-Produkte - Teil 12: Bestimmung der breitenbezogenen Bruchkraft an Perforationen - Berechnung der Perforations-Effizienz (ISO 12625-12:2010) This European Standard was approved by CEN on 9 January 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the con

7、ditions 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 CEN Management Centre or to any CEN member. This European Standard exists in th

8、ree 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 CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of

9、 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

10、 EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12625-12:2010: EBS

11、EN ISO 12625-12:2010EN ISO 12625-12:2010 (E) 3 Foreword This document (EN ISO 12625-12:2010) 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 Europea

12、n Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. Attention is drawn to the possibility that some of the elements of

13、this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European S

14、tandard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the Uni

15、ted Kingdom. BS EN ISO 12625-12:2010ISO 12625-12:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Principle2 5 Apparatus.2 5.1 Tensile-testing apparatus.2 5.2 Tensile-tester clamps2 5.3 Cutting device3 6 Sa

16、mpling.3 7 Conditioning 3 8 Preparation of test pieces.3 8.1 Dimensions 3 8.2 Number of test pieces.4 9 Procedure.4 9.1 General .4 9.2 Non-perforated test pieces.4 9.3 Perforated test pieces.4 10 Calculation .6 10.1 Tensile strength.6 10.2 Calculation of perforation efficiency .6 11 Test report6 12

17、Precision.7 12.1 General .7 12.2 Tensile strength of non-perforated and perforated products.8 12.3 Perforation efficiency9 Annex A (informative) Influence of a pre-cut in the perforation line .10 Annex B (informative) Influence of paper ageing 12 Bibliography14 BS EN ISO 12625-12:2010ISO 12625-12:20

18、10(E) iv ISO 2010 All rights reservedForeword 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

19、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 Electrotech

20、nical 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 t

21、he 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 right

22、s. ISO shall not be held responsible for identifying any or all such patent rights. ISO 12625-12 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, Subcomm

23、ittee 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). ISO 12625 consists of the following parts, under the general title Tissue paper and tissue products: Part 1: General principles f

24、or the use of 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 optic

25、al properties Part 8: Water-absorption time and water-absorption capacity, basket-immersion test method Part 9: Determination of ball burst strength Part 12: Determination of tensile strength of perforated lines Calculation of perforation efficiency The following part is under preparation: Part 13:

26、Determination of the spectral reflectance factor (brightness) at the wavelength R 457 nm with and without UV stimulus and opacity BS EN ISO 12625-12:2010ISO 12625-12:2010(E) ISO 2010 All rights reserved vIntroduction Tissue papers such as toilet paper and kitchen towel are often pre-cut. They are us

27、ed after separation of two consecutive sheets. It is important to know the efficiency of the pre-cut perforations. The perforation strength should be enough to ensure the product cohesion, but not too high, so that sheets can be easily separated. Depending on the type of tissue product, forces can b

28、e applied perpendicular to the perforation lines, or in the direction of the perforation lines. This part of ISO 12625 has been prepared by harmonizing those standards applicable to tissue paper and tissue products that are currently in use. It specifies a procedure to determine perforation efficien

29、cy based on the method described in ISO 12625-4 for the determination of the tensile strength of tissue paper and tissue products. BS EN ISO 12625-12:2010BS EN ISO 12625-12:2010INTERNATIONAL STANDARD ISO 12625-12:2010(E) ISO 2010 All rights reserved 1Tissue paper and tissue products Part 12: Determi

30、nation of tensile strength of perforated lines Calculation of perforation efficiency 1 Scope This part of ISO 12625 specifies a test method for the determination of the tensile strength of perforated lines of tissue paper. It uses a tensile-testing apparatus operating with a constant rate of elongat

31、ion. This method is only used for measuring machine-direction tensile strength, that is for cross-direction perforations on tissue paper. The calculation of perforation efficiency is also specified in this part of ISO 12625. It is expressly stated that the detection of impurities and contraries in t

32、issue paper and tissue products can be carried out according to ISO 15755. For the determination of moisture content in tissue paper and tissue products, ISO 287 can be applied. 2 Normative references The following referenced documents are indispensable for the application of this document. For date

33、d 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

34、procedure for monitoring the atmosphere and conditioning of samples ISO 536, Paper and board Determination of grammage ISO 1924-2, Paper and board Determination of tensile properties Part 2: Constant rate of elongation method (20 mm/min) ISO 7500-1, Metallic materials Verification of static uniaxial

35、 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 BS EN ISO 12625-12:2010ISO 12625-12:2010(E) 2 ISO 2010 All rights reserved3 Terms and definitions

36、For the purposes of this document, the terms and definitions given in ISO 12625-1 and the following apply. 3.1 tensile strength S maximum tensile force per unit width that a test piece will withstand before breaking in a tensile test 3.2 perforation efficiency Epdifference between the tensile streng

37、ths of non-perforated and perforated material from the same sample divided by the tensile strength of non-perforated material NOTE 1 The performance efficiency is expressed as a percentage. NOTE 2 The higher the perforation efficiency, the easier the sheet separation. 3.3 tie bar uncut zone in the p

38、erforation line 4 Principle A perforated test piece of tissue paper or tissue product, of given dimensions, is stretched to break in the machine direction at a constant rate of elongation using a tensile-testing apparatus that measures and records the tensile force as a function of the elongation of

39、 the test piece. From the recorded data, the tensile strength is calculated. In order to determine the perforation efficiency, measurements are performed both on perforated and non-perforated tissue products. 5 Apparatus 5.1 Tensile-testing apparatus The tensile-testing apparatus shall be in accorda

40、nce 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. The force-measuring system shall measure loads with an accuracy of 1 %

41、of the reading or 0,05 N, whichever is the greater. It shall be calibrated and verified in accordance with the requirements of ISO 7500-1. 5.2 Tensile-tester clamps The tensile-testing apparatus shall have two clamps of at least 50 mm in width. Each clamp shall be designed to grip the test piece fir

42、mly, but without damage, along a straight line across the full width of the test piece (the clamping line) and shall have a means for adjusting the clamping force. The clamps should preferably grip the test piece between a cylindrical and a flat surface, with the plane of the test piece tangential t

43、o the cylindrical surface. Other types of clamps may be used if it can be ensured that the test piece does not slip or suffer any damage during the test. BS EN ISO 12625-12:2010ISO 12625-12:2010(E) ISO 2010 All rights reserved 3During the test, the clamping lines shall be parallel to each other. The

44、y shall also be perpendicular to the direction of the applied tensile force and to the long dimension of the test piece. The distance between the clamping lines (the test span length) shall be (100 1) mm. In cases where the distance between perforations on the finished products is less than 100 mm a

45、nd it is not possible to obtain a test piece of 150 mm in length (as required in 8.1) containing only one perforation line, a test span length of (50 1) mm shall be used. This deviation from the specified procedure shall be recorded in the test report. 5.3 Cutting device The cutting device shall mee

46、t the requirements of ISO 536 and shall produce test pieces (50,0 0,5) mm wide, with undamaged, straight, smooth and parallel edges. 6 Sampling If the tests are being made to evaluate a lot, the sample shall be selected in accordance with ISO 186. If the tests are being made on another type of sampl

47、e, make sure the specimens taken are representative of the sample received. 7 Conditioning Condition the samples according to ISO 187, unless otherwise agreed between the parties concerned, and keep them in the standard atmosphere throughout the test. 8 Preparation of test pieces 8.1 Dimensions 8.1.

48、1 Non-perforated test pieces Non-perforated test pieces shall be (50 0,5) mm in width and at least 150 mm in length, excluding perforations and faults. With the exception of tissue paper or tissue products having an embossed pattern, the test pieces shall be free of creases, kinks, wrinkles, folds o

49、r other thickness variations. Test pieces shall be cut with their length in the machine direction. 8.1.2 Perforated test pieces Each perforated test piece shall be (50 0,5) mm in width and at least 150 mm in length, excluding faults. With the exception of tissue paper or tissue products having an embossed pattern, the test pieces shall be free of creases, kinks, wrinkles, folds or other thickness variations. Test pieces shall be cut with their length in the machine direction. Perforation line

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1