CEN/TC 193/WG 7 - Self adhesive tapes

This standard specifies the method to determine the mass of water vapour transmitted through the tape under specific test conditions. Details of the test method depend upon the width of the adhesive tape under test. For adhesive tapes less than 50 mm width it is necessary to use Annex A (normative).

This standard specifies the method to determine the ability of an adhesive tape to resist impact forces. An adhesive tape may possess adequate breaking and tear strengths to withstand a steady force, but it may lack sufficient impact strength to withstand the shock forces sometimes experienced in use.

This standard specifies a method to give an indication of the liability of an adhesive tape to cause corrosion. If amounts of water-soluble ions are negligible (pH near neutrality and low conductivity of aqueous extract) this indicates that the adhhesive tape is suitable for applications where corrosion must be avoided.

This standard specifies a method to measure the hydrostatic pressure required to burst an adhesive tape.

This European Standard specifies a series of methods for the determination of peel adhesion properties of self adhesives tapes.
Annexes A and B specify further variations in the testing protocol according to specific conditions.
This European Standard contains:
-   Method 1:   Self adhesive tapes - Measurement of peel adhesion from stainless steel at an angle of 180° ;
-   Method 2:   Self adhesive tapes - Measurement of peel adhesion from its own backing at an angle of 180° ;
-   Method 3:   Self adhesive tapes - Measurement of peel adhesion of double sided and transfer tapes at an angle 180° ;
-   Method 4:   Self adhesive tapes - Measurement of adhesion of the liner to an adhesive tape at an angle of 180°.
Together with
-   Annex A   Self adhesive tapes - Measurement of peel adhesion from  a surface at low temperature ;
-   Annex B   Self adhesive tapes - Measurement of peel adhesion from a surface at an angle of 90°.
A guide to the use of these methods and annexes is given in Table 1.

This European Standard specifies methods to measure the breaking strength and elongation at break of a self adhesive tape when it is subjected to a tensile force sufficient to cause it to break.
The breaking strength of adhesive tape is of value as an indication of its uniformity and quality, and its ability to withstand stresses during application and use.
The elongation at break of the adhesive tape is of value as an indication of its uniformity and quality as well as a rough indication of its ability to conform to curved and irregular surfaces. It is usually determined at the same time as the breaking strength.
This test method describes a procedure for testing 12 mm or 24 mm wide samples cut from supplied rolls of self adhesive tapes. Alternatively rolls of self adhesive tape up to 50 mm wide may be directly tested in their original width. In these circumstances the practical breaking strength and elongation will be typical of the manufacturer's cut edges. When newly cut sample pieces are tested, because of the better cutting of the edges, the results can be higher than would be found on commercial tape.

This European Standard specifies a series of methods for the determination of the ability of a pressure sensitive tape to remain adhered under a constant load applied parallel to the surfaces of the tape and substrate.
The European Standard contains:
-   method A : Self adhesive tapes - Measurement of shear adhesion to a vertical standard steel panel;
-   method B : Self adhesive tapes - Measurement of shear adhesion to a vertical panel covered with NIST SRM 1810A 1) standard fibreboard;
-   method C : Self adhesive tapes - Measurement of shear adhesion to a vertical panel covered with a fibreboard agreed upon by the buyer and seller;
-   method D : Self adhesive tapes - Measurement of shear adhesion of filament reinforced tape applied to a horizontal standard steel panel;
-   method E : Self adhesive tapes - Measurement of shear adhesion of filament reinforced tape applied to a horizontal panel covered with NIST SRM 1810A 1) standard fibreboard;
-   method F : Self adhesive tapes - Measurement of shear adhesion of filament reinforced tape applied to a horizontal panel covered with a fibreboard agreed upon by the buyer and seller;
method G : Self adhesive tapes - Measurement of shear adhesion to a vertical standard steel panel at elevated temperature after a 10 min dwell time.