ADHESIVE SHEET HAVING RHOMBIC TYPE EMBOSSING ARRAY

摘要

The present invention relates to an adhesive sheet having a rhombic embossing array with different longitudinal and transverse lengths which provides an adhesive sheet comprising a separator film wherein a rhombic shape consisting of a rectangle having four equal-length edges and two diagonal lines perpendicularly crossing each other and having different lengths is regularly arranged, and an adhesive film layered on the separator film to reduce a longitudinal and transverse elongation deviation to smoothly remove bubbles when affixing the adhesive film to metal or glass to reduce an air collection phenomenon. The present invention efficiently presses surface tension of an embossing surface transferred on the adhesive film in an engraving form on a target material such as plastic glass or the like to smoothly remove bubbles when affixing. According to the present invention, the ratio of the length of the horizontal diagonal line to the length of the vertical diagonal line of the rhombic shape approximately exceeds 1.0 and is smaller than or equal to 1.3. The height of embossing forming the rhombic shape is 6-18 μm; the width is 10-100 μm; and the radius of curvature is 1-50 μm.