1、STD-BSI BS EN L89b-ENGL 2001 I lb24bb9 0900141 686 BRITISH STANDARD 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 BS EN 1896:ZOOl NO COPYI
2、NG WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STDmBSI BS EN 189b-ENGL 2001 Lb24bb9 0900142 512 BS EN 1896:2001 Amd. No. Date This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the
3、Standards Committee and comes into effect on 15 March 2001 Comments 8 BSI 03-2001 ISBN O 680 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 PRU52, Adhesives, which
4、has the responsibility to: - - 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 European developments and promulgate them in the UK.
5、- 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 “Inte
6、rnational 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 with a
7、 British Standard does not of itself confer immunity from legal obligations. 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
8、. STDmBSI BS EN 1896-ENGL 2001 D 1624669 0900343 459 EUROPEAN STANDARD EN 1896 NORME EUROPENNE EUROPISCHE NORM January 2001 ICs 83.180 English version Adhesives for paper and board, packaging and disposable sanitary products - Determination of tensile strength and elongation Adhbsifs pour papier et
9、carton, emballage et produits sanitaires jetables - Dtermination de la rsistance B la traction et de lallongement Klebstoffe fr Papier, Verpackung und Hygieneprodukte - Bestimmung der Zugfestigkeit und der Dehnung This European Standard was approved by CEN on 6 January 2001. CEN members are bound to
10、 comply with the CENICENELEC 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 bibliographicd references concerning such national standards may be obtained on application to the Managem
11、ent 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 own language and notified to the Management Centre has the same status as the off
12、icial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmaik, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMI
13、TB EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FOR NORMUNG Management Centre: rue de Stassart, 36 6-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1896:2001 E Page 2 EN 1896:2001 Contents Page Foreword . 3
14、Scope . 4 Normative references . 4 Terms and definitions 4 Safety . 4 Test specimens . 5 Apparatus 4 Test method 6 Expression of results . 7 Test report . 7 Q BSI 03-2001 STD.BSI BS EN LSb-ENGL 2OOL Lb2Ybb9 0900LY5 22% Page 3 EN 1896:2001 Foreword This European Standard has been prepared by Technica
15、l Committee CENTTC 193, Adhesives, the Secretariat 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 th
16、e latest by July 2001. According to the CENICENELEC 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, N
17、etherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. O BSI 03-2001 STD-BSI BS EN L87b-ENGL 2001 Lb24bb9 0900L4b LbB Page 4 EN 1896:2001 I Scope This European Standard specifies a method of test for the determination of tensile strength and elongation of dry films of hot m
18、elt 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 text and t
19、he 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 applies (incl
20、uding amendments). EN 923, Adhesives - Terms and definitions. EN 1066, Adhesives - Sampling. EN 1067, Adhesives - Examination and preparation of samples for testing. IS0 554, Standard atmospheres for conditioning and/or testing - Specifications. 3 Terms and definitions For the purposes of this Europ
21、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
22、 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
23、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 5.1 Thickness gauge, able to measure 0,Ol mm without deforming the film. 5.2 The machine shall be equipped with a for
24、ce-measuring system complete with an indicator andlor a recorder. Tensile testing machine, capable of supplying a tensile force with a constant rate of grip separation. The indicated force shall not differ from the true applied force by more than 2 %. The response time of the machine shall be short
25、enough 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. O BSI 03-2001 STD-BSI ES EN L89b-ENGL 2003 M Lb24669 0700347 OT4 Type 10 I 4 h 1 2011 11
26、512 3312 2511 2 1011 5011 1711 8,511 Page 5 EN 1896:2001 ho R Rt 614 1411 2512 411 7,513 1015 6 Test specimens 6.1 Sampling 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 i
27、nitial length (I,) shall be marked taking care 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 thick
28、ness of each individual specimen shall not exceed 4 YO 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,OO f 1 ,OO) mm thick and can be prepared by any suitable method, for inst
29、ance putting the adhesives between the hot plates 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 IS0 554 to obtain a film (0,35 f
30、0,05) mm thick. This equilibrium is considered to be 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. 6.3 Preparation of test specimens Test specimens shall preferably be cut with a die out of an ad
31、hesive film and have a shape as shown in Figure 1 and dimensions as indicated in Table 1. Other shapes and dimensions can be used if specified and agreed upon. Table 1 Dimensions are in millimetres O BSI 03-2001 STD-BSI BS EN LAYb-ENGL 2001 W Lb24bbY OYOOL48 T30 Page 6 EN 18962001 L I I 1 Overall le
32、ngth Length of narrow parallel-sided portion Initial marked length Initial width of test specimens Width at ends Small radius Large radius The initial thickness of the test specimen is to. Figure 1 - Test specimens shape 7 Test method 7.1 Tensile test procedure The test shall be carried out in stand
33、ard atmosphere 23/50 according to IS0 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 specimen shall not be gripped in parts, which are less than *h” wide. Try to avoid the c
34、reation 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 between 10 mm/min and 1 O00 mm/min can be agreed upon and have to be recorded in the test r
35、eport. Determine the force applied and the elongation of the test specimen until it breaks, preferably by plotting the forcelelongation curve. Q BSI 03-2001 STD-BSI BS EN 1896-ENGL 2001 W 1624669 0900/49 977 Page 7 EN 1896:2001 Ensure that the force recorded lies in the range between 20 % and 80 % o
36、f the full scale. Test specimens where the break occurs outside the marked length lo shall not be evaluated. Test at least five test specimens, calculate the mean and take this as the result. 8 Expression of results 8.1 Tensile strength Calculate the tensile strength using the following equation: wh
37、ere: 0 is the tensile strength, in Newtons per square millimetre F t0 ho is the maximum force recorded, in Newtons is the initial thickness of test specimens, in millimetres is the initial width of test specimen, in millimetres 8.2 Elongation at break Calculate the elongation at break using the foll
38、owing equation: a complete identification of the product tested; the preparation of the test specimens; d) test atmosphere; e) 9 separation speed; g) type and thickness of test specimens; all the individual measured results and the mean of all of them. O BSI 03-2001 BS EN 1896:2001 BSI 389 Chiswick
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