| 摘要 |
<p>Disclosed is a method for forming a knurling portion with a reduced running cost, wherein a knurling portion with a wide versatility is formed without mechanically forming recesses and projections and without being affected by the kind, coating or surface modification of a base on which the knurling portion is formed, said knurling portion having a shape which does not affect products much when the knurling portion is formed thereon or the products are wound up. Specifically disclosed is a method for forming a knurling portion, wherein a knurling portion is formed at least along the side edges of a flexible strip-shaped base in the width direction, which is orthogonal to the longitudinal direction of the flexible strip-shaped base. The method for forming a knurling portion is characterized in that the knurling portion is composed of dome-shaped projections that are formed by ejecting a knurling portion-forming liquid from an inkjet head.</p> |
