General Properties

The preformed film features a simple application, as it is easy to cut and apply, and can be stacked as multiple layers. After cure, the film adhesive has high transparency (see Fig. 3) as well as high tensile strength, strong adhesion per­formance, excellent thermal stability, and high weatherability, as reported ear­lier [15].

The film is optically clear, its transparency has a very low dependency on temperature (see Fig. 4), and its refractive index (1.41) sufficiently matches that of window glass (1.51-1.52) [16] so as not to cause optical distortions. Further­more, the film has a low heat conduction coefficient. Finally, the bonded film can be removed, if desired so, simply by cutting.

Table 1 summarizes the general properties of the film.

Because of these unique properties, the authors expect future use of this material in both interior and exterior bonded point fixing for glazing as well as in direct glass-to-glass bonding applications, such as in structural glass fixing of facades, balustrades, or glass stairs as well as of glass furniture (replacement of mechanical fixing bolts in point supports, structural bonding along the glass edges in structural glazing, bonded glass corners). The film may also find fur­ther application in the production of structural laminated glass. Early trial installations have been completed at Ginza Matsuya Dept. Store and Okinawa History Memorial Hall in Japan.

FIG. 3—Stainless steel button attached to glass with TSSA (seen from side and rear face).

Copyright by ASTM Int’l (all rights reserved); Tue May 6 12:07:08 EDT 2014 Downloaded/printed by

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Copyright by ASTM Int’l (all rights reserved); Tue May 6 12:07:08 EDT 2014 Downloaded/printed by

Rochester Institute Of1Technology pursuant to License Agreement. No further reproductions authorized.