| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a film which allows water to flow easily in a specified direction, secures required adhesion when adhered with an adhesive to produce a product, is easily peelable in a specified direction in dissection and has good durability and its inexpensive production method.SOLUTION: Slender and nearly linear scratches are formed in a striped form on at least one side of a synthetic resin film, and there is imparted with anisotropic wettability which shows a difference between a fall angle in a direction perpendicular to the longitudinal direction of the scratches and a fall angle in a direction in parallel with the longitudinal direction of the scratches of at least 1 degree, measured by a method of measuring a fall angle of a water drop, where the drop angle is defined as the angle of the water drop to the horizontal direction when a 15-μL water drop of ultrapure water is dropped on the scratch-side surface of a film in a horizontal state at ordinary temperature and starts to fall by inclining the film at a rotational speed of 0.6 degree/s.</p> |
