1、Self-adhesive tapes English version of DIN EN 12032 Measurement of bonding of thermosetting adhesive tapes during curing ICs 83.180 Descriptors: Self-adhesive tapes, testing, bonding. Klebebnder; Messung der Bindefestigkeit von wrrnehrtenden Klebebndern whrend der Vernetzung DIN EN 12032 European St
2、andard EN 12032:1996 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CENiTC 253. The responsible German body involved in its preparation was the Normenausschu Verpackungswesen (Packaging Standards Committee). EN comprises
3、7 pages. ?uih Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). DIN EN 12032 Engl. Price group 01.97 Sales No. 11 EUROPEAN STANDARD NORME EUROPENNE EUROPAISCHE NORM EN 12 032 May 1996 ICs 83.1 80 Descriptors: Self-adhesive tapes, testing, bonding English version
4、 Self -ad hesi ve tapes Measurement of bonding of thermosetting adhesive tapes during curing Rubans auto-adhsifs; mesure de la liai- son des rubans thermodurcissables pen- dant le traitement thermique Klebebnder; Messung der Bindefestig- keit von wrmehrtenden Klebebndern whrend der Vernetzung This E
5、uropean Standard was approved by CEN on 1996-04-19. CEN members are bound to comply with the CENKENELEC 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
6、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
7、 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
8、 and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, 8-1050 Brussels O 1996. CEN -All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref
9、. No. EN 12 032 : 1996 E Page 2 EN 12032:1996 Contents Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 1 Scope ., 3 2 Definition . 3 3 Principle . . . . . . 3 4 Apparatus 3 5 Test sampl
10、es and test pieces - 3 6 Procedu re 4 7 Expression of results . 5 8 Test report .,. 5 Foreword This European Standard has been prepared by the Technical Committee CENRC 253 ?Self adhesive tapes?, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a nationa
11、l standard, either by publication 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 CENCENELEC Internal Regulations, the national standards organizations of the following coun
12、tries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 3 EN 12032:1996 1 scope This standard specifies a method to ob
13、serve the bonding of a thermosetting adhesive tape during the thermosetting process. The temperature and 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 : thermos
14、etting adhesive : Adhesive which becomes firmer on heating and remains so on cooling 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 the same adhesive tape. This assembly is loaded wit
15、h a weight, then suspended vertically in an oven, where it is cured under the specified temperature and time conditions. 4 Apparatus 4.1 Oven with air circulation. 4.2 Polished cylindrical metal roller This shall have a diameter of at least 50 mrn and a mass corresponding to 2 kg per centimetre widt
16、h of adhesive tape under test. 4.3 mark on one of the short sides, which should be parallel and at a distance of 12 mrn to one of the short sides. Polished metal plate, approximate dimensions 600 mm x 200 mrn x 5 mm, with a guide 4.4 50 g masses. 5 Test samples and test pieces Condition three sample
17、 rolls (at least 12 mm wide) for 24 hours at 23 OC f 2 OC and 50 % f 5 YO relative humidity. Discard the three outer turns of adhesive tape from each roll Take two test pieces approximate 150 mm long from each sample roll. Page 4 EN 12032:1996 6 Procedure 6.1 Preparation of test pieces A test piece
18、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 k 0.8 mm. 6.1.1 Step 1 (figure 1) To carry out this operation, the first test piece of adhesive
19、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 side of the plate nearest the guide mark. 6.1.2 Step 2 (figure 2) Apply the second
20、 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 approximately 1 O mm/s. Placing th
21、e metal plate at an angle and avoiding any pressure, a razor blade is arranged on the back of the second adhesive tape, aligning it with the guide mark made on the polished metal plate. The top-most test piece of adhesive tape is gradually unpeeled and tom against the razor blade, thus defining a co
22、ntact area of the adhesive tapes measuring 12 mm f 0,8 mm. 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, starting at the uncut end (figure 3). Trim lengthwise the test pieces prepared in this way and measuring
23、more than 12 mm wide lengthwise to a width of 12 mm f 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 sides together (figure 4). 6.2 Test procedure Suspend the three test pieces vertically in an ove
24、n, 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 curing process. Page 5 EN 12032:1996 7 Expression of results Record if separation of the adhesive joint occurs. A separation
25、of the joint will have occurred if the weight has fallen or if the adhesive tape has slipped more than 2 mm. 8 Testreport 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) test conditions
26、 ; d) the date of the test ; e) the results obtained ; f) any operation not specified in this European Standard which may influence the results. Page 6 EN 12032:1996 Dimensions in millimetres I- I Figure 1 : Step 1 Second piece of adhesive tape -T Figure 2 : Step 2 Page 7 EN 12032:1996 Cut the second piece at 12 mm from the short side of the plate Figure 3 : Step 3 Cut to 12 mm width - Fold back the free ends Figure 4 : Step 3
