1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12035 : 1997 The Eu
2、ropean Standard EN 12035 : 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 Flagging of adhesive tapeBS EN 12035 : 1997 This British Standard, having been prepared under the direction of the Consumer Produ
3、cts and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference PKW/3 Draft for comment 92/43821 DC ISBN 0 580 26730 X Amendments issued since
4、 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 following bodies were represented: British Adhesiv
5、e 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 British Retail Consortium British Rubber Manufactu
6、rers 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 Department of Transport Engineering Equipment a
7、nd 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 National Association of Pallet Distributors Pow
8、er 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 Softwood Sawmillers Association The following b
9、odies 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 Pressure Sensitive Manufacturers AssociationBS EN
10、12035 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 12035 3ii BSI 1997 BS EN 12035 : 1997 National foreword This British Standard has been prepared by Technical Committee PKW/3 and is the English language version of EN 12035 : 19
11、96 Self-adhesive tapes Flagging of adhesive tape, published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii
12、, the EN title page, pages 2 to 4, 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 de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN 12035 :
13、 1996 E EUROPEAN STANDARD EN 12035 NORME EUROPE ENNE EUROPA ISCHE NORM May 1996 ICS 83.180 Descriptors: adhesive tapes, tests, windings, peeling, ends English version Self-adhesive tapes Flagging of adhesive tape Rubans auto-adhe sifs Mise en drapeau des rubans adhe sifs Klebeba nder Ablo sen von Kl
14、ebebandenden (Flagging) This European 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
15、bibliographical references concerning 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 responsibili
16、ty of a CEN member into its own 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, Portu
17、gal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 12035 : 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 s
18、tandard, 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 CEN/CENELEC Internal Regulations, the national standards organizations of the following countr
19、ies 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. Contents Page Foreword 2 1 Scope 3 2 Definition 3 3 Principle 3 4 App
20、aratus 3 5 Test pieces 3 6 Procedure 3 7 Expression of results 4 8 Test report 4Page 3 EN 12035 : 1996 BSI 1997 1 Scope This standard specifies a method to measure flagging which may occur under specified conditions. Knowledge of the flagging is useful in determining whether the adhesion of the adhe
21、sive tape to a backing of the same adhesive tape is adequate for applications where unwinding could occur. The flagging may occur under normal conditions, during the curing cycle of thermosetting adhesives or during immersion in liquids. 2 Definition For the purposes of this standard, the following
22、definition applies. flagging A peeling away from the surface of tape backing of the end of a length of tape, particularly in a spiral wrap application. 3 Principle A length of adhesive tape is wound upon itself round a thin rod with one-quarter turn overlap. After the prescribed time and conditions,
23、 any lifting of the end is examined and, where necessary, measured. 4 Apparatus 4.1 A simple winding jig, designed to hold a rod at each end, with a means of rotating the rod so that the test piece may be wound thereon. The winding jig shall be attached to a rigid support with the rod held in a hori
24、zontal position. 4.2 Rods, of any suitable metal or glass, of 6 mm or 12 mm nominal diameter. 4.3 Attachable masses, of 100 g, 200 g, 300 g and 400 g. 4.4 A suitable method of measuring 2 mm to the nearest 0,5 mm. 5 Test pieces Three strips of adhesive tape at least 100 mm long are removed from the
25、roll by pulling radially, at a rate of approximately 300 mm/s, at intervals of 300 mm. If the width of the adhesive tape is greater than 12 mm, the test piece shall be cut out of the middle of the adhesive tape to a width of 9 mm. The test piece shall be cut with a sharp tool to avoid tearing the ed
26、ges. NOTE. It is important to protect the adhesive surface from dust and to avoid touching it with the fingers or any other foreign object. 6 Procedure 6.1 Standard test conditions The test shall be carried out at 23 C 2C and 50 % 5 % relative humidity. 6.2 Preparation of rods Prepare three rods acc
27、ording to the following procedure: Mount a rod of 6 mm diameter (unless otherwise specified) in a horizontal position in the jig. Attach a mass in the ratio of 400 g for 12 mm adhesive tape width, e.g. 300 g for 9 mm width, to one end of the adhesive tape test piece. The test piece is held by the ot
28、her end so that it is vertical and the adhesive side is brought into contact with the side of the rod. (See figure 1.) Rotate the rod through 90 until the original point of contact, A, of the test piece with the rod is at the top. (See figure 2.) Cut the test piece with a sharp tool at this point, l
29、eaving the mass suspended. The rod is then rotated one complete turn. Remove the mass and cut the test piece at D by placing a sharp tool tangentially to the rod (see figure 3) and tearing the test piece against the tool. This gives an overlap of one-quarter turn, i.e. 90. 6.3 Determination of flagg
30、ing 6.3.1 Flagging at the standard conditions Condition the prepared test piece in the vertical position for 7 days at 23 C 2 C and 50 % 5 % relative humidity. 6.3.2 Flagging after thermosetting of adhesive tapes Condition the prepared test piece in the vertical position at the temperature and for t
31、he time prescribed by the manufacturer or in the relevant specification sheet. 6.3.3 Flagging after immersion in liquids The prepared test piece, cured if necessary, shall be totally immersed in the vertical position in the liquid for 15 min at 23 C 2 C. Thermosetting adhesive tapes shall be cured f
32、or the time and at the temperature prescribed, and shall be allowed to cool to 23 C 2 C before immersion in the liquid. The liquids for immersion shall be agreed between the manufacturer and the customer.Page 4 EN 12035 : 1996 BSI 1997 Figure 1 Figure 2 Figure 3 Figure 4 Figures 1, 2, 3 and 4. Flagg
33、ing test Preparation of test piece 7 Expression of results Measure the flag, i.e. the length of adhesive tape unwound (see figure 4) to the nearest 1 mm. Should uneven flagging occur, the greatest distance is measured. Record the median value of the three readings as the amount of flagging. 8 Test r
34、eport 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) the date of the test; d) if necessary, the composition or the nature of the liquid used for the test; e) the results obtained; f) any
35、operation not specified in this European Standard which may influence the results.blankBSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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