METHOD FOR PRODUCING SURFACE-STRUCTURED, FILM-LIKE SEMI-FINISHED PRODUCT FROM A THERMOPLASTIC AND SEMI-FINISHED PRODUCT PRODUCED ACCORDING TO SAID METHOD

摘要

The invention relates to a method for producing a surface-structured, filmlike semi-finished product (31) from a thermoplastic. According to said method a thermoplastic material is applied in a molten state or in the form of a film onto a surface (5) having fine cavities corresponding to the inverse structure (matrix) of the desired final structure. After solidification the plastic material is withdrawn from the surface so that the thermoplastic material which was introduced into the cavities and withdrawn therefrom forms a pile (12) consisting of protuberances. The protuberances constituting the pile (12) are elongated by combing, brushing, knife-coating and/or shear pinching (2227), which significantly increases the length of the protuberances.