| 摘要 |
The plastic strip(16) is a coated film whose adhesive coated surface(16a) forms the outer roll surface facing the material. Independent claims are made for:- (1) a method for producing the material roller in which a core(11) is formed by wrapping the adhesive coated film strip(16) with adhesive facing outwards around a cylindrical mandrel, bonding the overlapping film areas to attach them to the mandrel, attaching the start(18) of a material(12) to be wound onto the core surface(16a), and rotating the mandrel to wind on the band material before removing from the mandrel; (2) process equipment including an expanding mandrel with radially adjustable segments which can be reduced in diameter after producing the wound material. Preferred Features: The core is made from film of the same material as the material to be wound on, and has a thickness of 20-40 microns. Conventially available self adhesive film may be used. The nature of the adhesive coating allows removal of the adhering material without transfer of adhesive particles to the latter. An adhesive coated plastic film forms a sleeve surrounding the wound material. |
