| 摘要 |
PURPOSE: A PR film having various printed letters and designs for use in a hand rail of an escalator is provided to improve wear resistance and adhesion of the film, to prevent the separation or dislocation of the film after adhesion and to permit advertising matters to be easily exchanged. CONSTITUTION: The PR film formed on the outer circumferential surface of the hand rail(10) of an escalator comprises: an adhesive layer(30) attached to the surface of the hand rail(10), which is an acrylic adhesive capable of double-side adhesion; a primer layer(40) attached to the adhesive layer(30) and containing an isocyanate-based curing agent as a surface modifier for improving adhesion; a urethane print layer(50) attached to another side of the primer layer(40) and having various letters and designs for PR; and a transparent or translucent polyurethane coating layer(60) for protecting the urethane print layer(50) from the exterior. The adhesive layer(30) and the urethane print layer(50) are securely adhered to the primer layer(40). The adhesion between the primer layer(40) and each of the urethane print layer(50) and the polyurethane coating layer(60) is greater than that between the hand rail(10) and the adhesive layer(30), and thus the adhesive layer(30) can be completely removed from the surface of the hand rail(10).
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