公开(公告)号：US20180009125A1

公开(公告)日：2018-01-11

申请号：US15546573

申请日：2016-01-25

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Satoshi SHIOTA

IPC: B26F1/44 ,  B32B27/36 ,  B26F1/40 ,  B32B27/08 ,  B44F9/04 ,  B44C5/04

CPC classification number: B26F1/44 ,  B26F1/40 ,  B26F2001/4472 ,  B32B27/08 ,  B32B27/36 ,  B32B2307/402 ,  B32B2307/412 ,  B32B2307/702 ,  B32B2307/704 ,  B44C5/04 ,  B44F9/04

Abstract: A process for producing a resinous panel which is for use as at least some of the front panel of an article, the process including (A) a step in which a resin sheet having a thickness of 0.5-10 mm is fixed to a working table and (B) a step in which the resin sheet is punched out by forcing a Thomson blade into the resin sheet approximately perpendicularly thereto from the side where the surface of the resin sheet is to be the outer surface of the article, thereby obtaining the front panel, wherein (C) the Thomson blade is a double-edged blade having an edge angle of 30-60 degrees. The resin sheet has a tensile modulus of preferably 1,500 MPa or greater. Preferably, the resin sheet includes a transparent resin sheet layer and a colored resin sheet layer in this order from the surface that is to be the outer surface of the article. The colored resin sheet is one which does not break when a DuPont impact test was conducted in accordance with ASTM-D2794 in a 0° C. environment under the conditions of a height of 50 cm, an impactor diameter of 1 inch, an impactor weight of 1 Kg, and a pedestal diameter of ½ inch.