1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12033 : 1997 The Eu
2、ropean Standard EN 12033 : 1996 has the status of a British Standard ICS 55.040; 83.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Self-adhesive tapes Measurement of bonding of thermosetting adhesive tapes after curingBS EN 12033 : 1997 This British Standard, having been
3、prepared 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 9
4、2/42637 DC ISBN 0 580 26728 8 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 t
5、he following 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 Federat
6、ion British 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 Log
7、istics 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 D
8、efence 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 K
9、ingdom 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 Associat
10、ion Pressure Sensitive Manufacturers AssociationBS EN 12033 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 12033 3ii BSI 1997 BS EN 12033 : 1997 National foreword This British Standard has been prepared by Technical Committee PKW/
11、3 and is the English language version of EN 12033 : 1996 Self-adhesive tapes Measurement of bonding of thermosetting adhesive tapes after curing, published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligation
12、s. Summary 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
13、: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN 12033 : 1996 E EUROPEAN STANDARD EN 12033 NORME EUROPE ENNE EUROPA ISCHE NORM May 1996 ICS 83.180 Descriptors: Adhesive tapes, thermosetting resins, tests, properties, cross-linking English version Self-adhesive
14、 tapes Measurement of bonding of thermosetting adhesive tapes after curing Rubans auto-adhe sifs Mesure de la se paration de la liaison des rubans thermodurcissables apre s le traitement thermique Klebeba nder Messung der Bindefestigkeit von wa rmeha rtenden Klebeba ndern nach der Vernetzung This Eu
15、ropean Standard was 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 conc
16、erning 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
17、 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland
18、 and United Kingdom.Page 2 EN 12033 : 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
19、of an identical text 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
20、 European Standard: 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 tes
21、t pieces 3 6 Procedure 3 7 Expression of results 5 8 Test report 5Page 3 EN 12033 : 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 in a hot atmosphere. 2 Definition
22、 For the purposes of this standard, the following definition applies. thermosetting adhesive Adhesive which becomes firmer on heating and remains set regardless of subsequent temperature cycles. 3 Principle A piece of adhesive tape to be tested is applied overlapping the back of a second piece of th
23、e same adhesive tape and is cured according to the manufacturers instructions. Then this assembly is loaded with a weight, hanging vertically in an oven under specified temperature and time conditions. The adhesive joint should not break or slip during this period. 4 Apparatus 4.1 Oven with air circ
24、ulation, capable of 130 C. 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 steel plate, approximate dimensions 600 mm3 200 mm3 5 mm, with a guide mark parallel to one of the short
25、sides and at a distance of 12 mm from it. 4.4 500 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 test pieces approximately 150 mm
26、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 contact area measures 12 mm 0,8 mm. 6.1.
27、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 with a razor blade along the short
28、side of the plate nearest the guide mark.Page 4 EN 12033 : 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 (figure 2) Apply the second test pi
29、ece 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 approximately 10 mm/s. Placing the metal p
30、late 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 blade, thus defining a contact area o
31、f the adhesive tapes measuring 12 mm 0,8 mm.Page 5 EN 12033 : 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 the metal plate is then unpeeled, st
32、arting 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 approximately 50 mm, adhesive side
33、s together (figure 4). 6.2 Test procedure The three test pieces are freely suspended, without weights, in an oven and cured in accordance with the manufacturers instructions. After cooling for 5 min at 23 C 2 C and 50 % 5%o f relative humidity, the test pieces are suspended vertically in an oven at
34、130 C with a 500 g mass at their lower ends. The test pieces remain in the oven for 30 min at this temperature. 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 th
35、an 2 mm. 8 Test report The test report shall include the following information: a) a reference to this European Standard; b) all information necessary to identify the test sample; c) curing conditions; d) the date of the test; e) the results obtained; f) any operation not specified in this European
36、Standard which may influence the results.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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