KNURLING DEVICE AND KNURLING METHOD FOR RESIN-MADE FILM SHEET, RESIN-MADE FILM HAVING KNURL FORMED BY THE KNURLING METHOD, AND RESIN-MADE FILM PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a knurling device for resin-made film sheet that continuously and stably knurls a width-directional ends of a thin resin-made film sheet such as a film for good packing.;SOLUTION: When a film sheet S is unwound from a winding R or when a film sheet S is wound around a core material C to form a winding R, an engraving roll comprising a front roll 2f and a rear roll 2b is pressed against an edge of the winding R. support shafts 3f, 3b of the engraving roll 2 are set in a direction crossing an end face of the winding R, and an outer circumferential surface of the engraving roll 2 is obliquely pressed against the edge. The front roll 2f and rear roll 2b are supported by both ends of a substantially bent-shaped arm member 3, which is supported at a center part to swing. Engraving rolls 2 are arranged at both edges of the winding R and linked by a support plate 7, and a press roller 10 linked to the support plate 7 is pressed againt the center part of the winding R to follow up variation in diameter of the winding R.;COPYRIGHT: (C)2013,JPO&INPIT