1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12032 : 1997 The Eu
2、ropean Standard EN 12032 : 1996 has the status of a British Standard ICS 83.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Self-adhesive tapes Measurement of bonding of thermosetting adhesive tapes during curingBS EN 12032 : 1997 This British Standard, having been prepare
3、d under the direction of the Consumer Products and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 February 1997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference PKW/3 Draft for comment 92/42638
4、 DC ISBN 0 580 26727 X Amendments issued since publication Amd. No. Date Text affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PKW/3, Distribution packaging, transport packaging and unit loads, upon which the foll
5、owing bodies were represented: British Adhesives and Sealants Association British Apparel and Textile Confederation British Coatings Federation Ltd. British Fibreboard Packaging Association British Glass Manufacturers Confederation British Industrial Truck Association British Plastics Federation Bri
6、tish Retail Consortium British Rubber Manufacturers Association Ltd. British Tensional Strapping Association Ltd. British Timber Merchants Association British Wood Preserving and Damp-proofing Association Chamber of Shipping Chemical Industries Association China Clay Association Cranfield Logistics
7、Department of Transport Engineering Equipment and Materials Users Association Federation of the Electronics Industry Flexible IBC Association Food and Drink Federation Independent Pallet Repair Committee Institute of Grocery Distribution Metal Packaging Manufacturers Association Ministry of Defence
8、National Association of Pallet Distributors Power Fastenings Association Pira International Road Haulage Association Ltd. Society of Occupational Medicine Storage Equipment Manufacturers Association Timber Packaging and Pallet Confederation Timber Research and Development Association United Kingdom
9、Softwood Sawmillers Association The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Adhesive Tape Manufacturers Association British Footwear Manufacturers Federation British Steel Industry (Wire Section) Packaging Distributors Association Pre
10、ssure Sensitive Manufacturers AssociationBS EN 12032 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 12032 3ii BSI 1997 BS EN 12032 : 1997 National foreword This British Standard has been prepared by Technical Committee PKW/3 and i
11、s the English language version of EN 12032 : 1996 Self-adhesive tapes Measurement of bonding of thermosetting adhesive tapes during curing, published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligations. Sum
12、mary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue
13、de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN 12032 : 1996 E EUROPEAN STANDARD EN 12032 NORME EUROPE ENNE EUROPA ISCHE NORM May 1996 ICS 83.180 Descriptors: Adhesive tapes, thermosetting resins, tests, properties, cross-linking English version Self-adhesive tapes
14、 Measurement of bonding of thermosetting adhesive tapes during curing Rubans auto-adhe sifs Mesure de la liaison des rubans thermodurcissables pendant le traitement thermique Klebeba nder Messung der Bindefestigkeit von wa rmeha rtenden Klebeba ndern wa hrend der Vernetzung This European Standard wa
15、s approved by CEN on 1996-04-19. 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 nation
16、al 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 noti
17、fied to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdo
18、m.Page 2 EN 12032 : 1996 BSI 1997 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 253, Self-adhesive tapes, the Secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical te
19、xt or by endorsement, at the latest by November 1996, and conflicting national standards shall be withdrawn at the latest by November 1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard
20、: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Definition 3 3 Principle 3 4 Apparatus 3 5 Test samples and test pieces 3 6 Proce
21、dure 3 7 Expression of results 5 8 Test report 5Page 3 EN 12032 : 1996 BSI 1997 First piece of adhesive tape Dimensions in millimetres Figure 1. Step 1 1 Scope This standard specifies a method to observe the bonding of a thermosetting adhesive tape during the thermosetting process. The temperature a
22、nd duration for each test shall be as the manufacturers instructions for bonding the relevant adhesive tape. 2 Definition For the purposes of this standard, the following definition applies. thermosetting adhesive Adhesive which becomes firmer on heating and remains so on cooling, and remains set re
23、gardless of subsequent temperature cycles. 3 Principle A piece of adhesive tape to be tested is applied overlapping the back of a second piece of the same adhesive tape. This assembly is loaded with a weight, then suspended vertically in an oven, where it is cured under the specified temperature and
24、 time conditions. 4 Apparatus 4.1 Oven with air circulation. 4.2 Polished cylindrical metal roller with a diameter of at least 50 mm and a mass corresponding to 2 kg per centimetre width of adhesive tape under test. 4.3 Polished metal plate, approximate dimensions 600 mm 3 200 mm3 5 mm, with a guide
25、 mark parallel to one of the short sides and at a distance of 12 mm from it. 4.4 50 g masses. 5 Test samples and test pieces Condition three sample rolls (at least 12 mm wide) for 24 h at 23 C 2 C and 50 % 5 % relative humidity. Discard the three outer turns of adhesive tape from each roll. Take two
26、 test pieces approximately 150 mm long from each sample roll. 6 Procedure 6.1 Preparation of test pieces A test piece of adhesive tape taken from one of the sample rolls is applied with its adhesive surface on the back of a second test piece taken from the same roll, so that the length of the contac
27、t area measures 12 mm 0,8 mm. 6.1.1 Step 1 (figure 1) To carry out this operation, the first test piece of adhesive tape is applied to the polished steel plate, at roughly the centre of this plate, so that the adhesive tape extends about 50 mm beyond the guide mark. Carefully cut the adhesive tape w
28、ith a razor blade along the short side of the plate nearest the guide mark.Page 4 EN 12032 : 1996 BSI 1997 Second piece of adhesive tape Dimensions in millimetres Figure 2. Step 2 Cut the second piece at 12 mm from the short side of the plate Dimensions in millimetres Figure 3. Step 3 6.1.2 Step 2 (
29、figure 2) Apply the second test piece of adhesive tape on top of the first test piece, as accurately as possible, and along a length of approximately 50 mm from the side of the plate nearest the guide mark. Pass the metal roller twice, in each direction, over the contact area, at a speed of approxim
30、ately 10 mm/s. Placing the metal plate at an angle and avoiding any pressure, position a razor blade on the back of the second adhesive tape, aligning it with the guide mark made on the polished metal plate. The topmost test piece of adhesive tape is gradually unpeeled and torn against the razor bla
31、de, thus defining a contact area of the adhesive tapes measuring 12 mm 0,8 mm.Page 5 EN 12032 : 1996 BSI 1997 Cut to 12 mm width Fold back the free ends Dimensions in millimetres Figure 4. Step 3 6.1.3 Step 3 (figure 3 and figure 4) The lower test piece of adhesive tape which is still attached to th
32、e metal plate is then unpeeled, starting at the uncut end (figure 3). Trim lengthwise the test pieces prepared in this way and measuring more than 12 mm wide, to a width of 12 mm 0,8 mm, using a razor blade. It would then be appropriate to fold back the free ends of the test pieces over a length of
33、approximately 50 mm, adhesive sides together (figure 4). 6.2 Test procedure Suspend the three test pieces vertically in an oven, each loaded with a 50 g mass, at their lower ends. They remain thus for the period and at the temperature indicated in the adhesive tape manufacturers instructions for the
34、 curing process. 7 Expression of results Record if separation of the adhesive joint occurs. A separation of the joint will have occurred if the weight has fallen or if the adhesive tape has slipped more than 2 mm. 8 Test report The test report shall include the following information: a) a reference
35、to this European Standard; b) all information necessary to identify the test sample; c) test conditions; d) the date of the test; e) the results obtained; f) any operation not specified in this European Standard which may influence the results.BSI 389 Chiswick High Road London W4 4AL | | | | | | | |
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