| 摘要 |
THE PRESENT INVENTION RELATES TO A PRESSURE SENSITIVE ADHESIVE SHEET 1 COMPRISING A BASE MATERIAL 11 AND A PRESSURE SENSITIVE ADHESIVE LAYER 12 WHEREIN A PLURALITY OF THROUGH HOLES 2 PASSING THROUGH ONE FACE OF THE PRESSURE SENSITIVE ADHESIVE SHEET 1 TO THE OTHER FACE ARE FORMED. THE HOLE DIAMETER OF THE THROUGH HOLES 2 IS 0.1 TO 300 ?M, THE HOLE DIAMETER OF THE THROUGH HOLE (2) AT THE SURFACE (1A) OF THE PRESSURE SENSITIVE ADHESIVE SHEET (1) IS 40 ?M OR LESS AND THE HOLE DENSITY IS 30 TO 50,000/100 CM². IT IS PREFERABLE TO FORM THE THROUGH HOLES 2 USING A LASER BEAM MACHINING. ACCORDING THE PRESSURE SENSITIVE ADHESIVE SHEET 1, AN AIR TRAPPING OR A BLISTER CAN BE PREVENTED OR REMOVED WITHOUT DISFIGURING THE PRESSURE SENSITIVE ADHESIVE SHEET AND WHILE SECURING A SUFFICIENT ADHESIVE STRENGTH. |
