《BS-EN-1896-2001.pdf》由会员分享，可在线阅读，更多相关《BS-EN-1896-2001.pdf（10页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 1896:2001 Adhesives for paper and board, packaging and disposable sanitary products Determination of tensile strength and elongation The European Standard EN 1896:2001 has the status of a British Standard ICS 83.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPY
2、RIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 1896:2001 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards
3、 Committee and comes into effect on 15 March 2001 BSI 03-2001 ISBN 0 580 37261 8 National foreword This British Standard is the official English language version of EN 1896:2001. The UK participation in its preparation was entrusted to Technical Committee PRI/52, Adhesives, which has the responsibil
4、ity to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled
5、 “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance
6、with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and E
7、uropean developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7, and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since
8、 publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1896 January 2001 ICS 83.180 English version Adhesives for paper and board, packaging and disposable sani
9、tary products Determination of tensile strength and elongation Adhsifs pour papier et carton, emballage et produits sanitaires jetables Dtermination de la rsistance la traction et de lallongement Klebstoffe fr Papier, Verpackung und Hygieneprodukte Bestimmung der Zugfestigkeit und der Dehnung This E
10、uropean Standard was approved by CEN on 6 January 2001. 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
11、 concerning such national standards may be obtained on application to the Management Centre 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
12、own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sw
13、eden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Member
14、s. Ref. No. EN 1896:2001 E Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 1896:2001 BSI 03-2001 Contents Page Foreword. 3 1Scope. 4 2Normative references. 4 3Terms and definitions 4 4Safety. 4 5Apparatus 4 6Test specimens. 5 7Test
15、 method 6 8Expression of results. 7 9Test report. 7 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 1896:2001 BSI 03-2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 193, Adhesives, the Secretari
16、at of which is held by AENOR. 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 July 2001, and conflicting national standards shall be withdrawn at the latest by July 2001. According to the CEN/CENE
17、LEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Swi
18、tzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 1896:2001 BSI 03-2001 1 Scope This European Standard specifies a method of test for the determination of tensile strength and elongation of dry films
19、of hot melt or dispersion adhesives when these are stretched to breakage at a constant pulling speed. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the te
20、xt and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to appli
21、es (including amendments). EN 923, Adhesives Terms and definitions. EN 1066, Adhesives Sampling. EN 1067, Adhesives Examination and preparation of samples for testing. ISO 554, Standard atmospheres for conditioning and/or testing Specifications. 3 Terms and definitions For the purposes of this Europ
22、ean Standard, the terms and definitions given in EN 923 and the following definitions apply. 3.1 film tensile strength maximum force measured during the extension of test specimen, divided by the initial cross-section area of the test specimen. Tensile strength is dependent of pulling speed 3.2 film
23、 elongation at break increase in length, measured at the moment of break, reported to the initial length expressed in percent 4 Safety Persons using this standard shall be familiar with normal laboratory practice. This standard does not purport to address all the safety problems, if any, associated
24、with its use. It is the responsibility of the user to establish safety and health practices and to ensure compliance with any European and national regulatory conditions. 5 Apparatus 5.1Thickness gauge, able to measure 0,01 mm without deforming the film. 5.2Tensile testing machine, capable of supply
25、ing a tensile force with a constant rate of grip separation. The machine shall be equipped with a force-measuring system complete with an indicator and/or a recorder. The indicated force shall not differ from the true applied force by more than 2 %. The response time of the machine shall be short en
26、ough not to affect the accuracy with which the force applied at the time of rupture can be measured. The force of rupture of the specimen shall lie in the range between 20 % and 80 % of the full-scale reading. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006, Uncontroll
27、ed Copy, (c) BSI Page 5 EN 1896:2001 BSI 03-2001 6 Test specimens 6.1Sampling Take a sample of the adhesive to be tested in accordance with EN 1066. Examine and prepare it for testing in accordance with EN 1067. 6.2 Preparation of the adhesive film The initial length (lo) shall be marked taking care
28、 of not damaging the film. Before testing, the thickness of the test specimen shall be measured at, at least, three points between the marks (lo), the mean value (to) being used as a basis for calculating the cross-sectional area. Variations in the thickness of each individual specimen shall not exc
29、eed 4 % of the thickness mean. The width of the test specimen can be assumed to be the same as the cutting width of the die. 6.2.1 Hot melt adhesives The adhesive film shall be (3,00 1,00) mm thick and can be prepared by any suitable method, for instance putting the adhesives between the hot plates
30、of a press using a metallic spacer to keep the plates separated. 6.2.2 Water based adhesives A single draw down of adhesive is allowed to dry until it reaches equilibrium with a standard atmosphere 23/50 according to ISO 554 to obtain a film (0,35 0,05) mm thick. This equilibrium is considered to be
31、 attained when the results of two consecutive weighings of at least 1 h apart do not differ by more than 0,25 % of the total mass of the test specimen. 6.3Preparation of test specimens Test specimens shall preferably be cut with a die out of an adhesive film and have a shape as shown in Figure 1 and
32、 dimensions as indicated in Table 1. Other shapes and dimensions can be used if specified and agreed upon. Table 1 Dimensions are in millimetres Typel0ll1hh0RR1 120 1115 233 225 16 414 125 2 210 150 117 18,5 14 17,5 310 5 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006
33、, Uncontrolled Copy, (c) BSI Page 6 EN 1896:2001 BSI 03-2001 Key lOverall length l1 Length of narrow parallel-sided portion l0 Initial marked length h0 Initial width of test specimens hWidth at ends RSmall radius R1 Large radius The initial thickness of the test specimen is t0. Figure 1 Test specime
34、ns shape 7 Test method 7.1Tensile test procedure The test shall be carried out in standard atmosphere 23/50 according to ISO 554. Insert the test specimen in the jaws of the tensile testing machine (5.2), with the longitudinal axis in line with the direction in which the force is applied. The test s
35、pecimen shall not be gripped in parts, which are less than “h” wide. Try to avoid the creation of stress in the samples when clamping it. When negative stress occurs, do not reset the scale. If positive stress occurs, re-clamp. The rate of separation of the jaws shall be 300 mm/min. Other rates betw
36、een 10 mm/min and 1 000 mm/min can be agreed upon and have to be recorded in the test report. Determine the force applied and the elongation of the test specimen until it breaks, preferably by plotting the force/elongation curve. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00
37、:00 2006, Uncontrolled Copy, (c) BSI Page 7 EN 1896:2001 BSI 03-2001 Ensure that the force recorded lies in the range between 20 % and 80 % of the full scale. Test specimens where the break occurs outside the marked length l0 shall not be evaluated. Test at least five test specimens, calculate the m
38、ean and take this as the result. 8 Expression of results 8.1Tensile strength Calculate the tensile strength using the following equation: 00 t h F ? where: ?is the tensile strength, in Newtons per square millimetre Fis the maximum force recorded, in Newtons t0is the initial thickness of test specime
39、ns, in millimetres h0is the initial width of test specimen, in millimetres 8.2Elongation at break Calculate the elongation at break using the following equation: 100 - 0B ? 0 l ll where: ?Bis the elongation at break, as percentage lBis the marked length at break, in millimetres l0is the initial mark
40、ed length, in millimetres 9 Test report The test report shall include the following: a) a reference to this European Standard; b)a complete identification of the product tested; c)the preparation of the test specimens; d)test atmosphere; e)type and thickness of test specimens; f)separation speed; g)
41、all the individual measured results and the mean of all of them. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:35:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 1896:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body
42、responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest
43、amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can
44、be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards pu
45、blications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as
46、British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which giv
47、e details on all its products and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits
48、 contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Further information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standar
49、dization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any ot