| abstract |
The present invention is a long film, which is a long film having plural knurled parts formed by continuous linear concavities and convexities on at least one surface, and the plural knurled parts are arranged on the long film of the long film. In the side direction, the planar shape of the knurled portion as viewed from the thickness direction of the long film, and each planar shape of the knurled portion has 10 or more of the knurled portion with a radius of curvature of 0.3 mm or less and an angle of 100° or less, Or a corner with a radius of curvature of 0.2 mm or less and an angle of 120° or less has 18 or more linear straight parts per plane shape of the knurled part. |