STRUCTURE OF OPENING OF CEILING MATERIAL, METHOD FOR FORMING OPENING OF CEILING MATERIAL, AND DEVICE OF FORMING OPENING OF CEILING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide the structure of an opening of a ceiling material capable of being easily formed at low cost by using a punching blade having a simple constitution. SOLUTION: In a part corresponding to a sunroof of the ceiling material 12 having a base material 12a and a skin 12b to cover a surface on an indoor side of the base material 12a, the opening 14 is formed by cutting the base material 12a by leaving the skin 12b. An end face 14a of the opening 14 is formed to be directed in an almost horizontal direction. The remaining part of the skin 12b is folded back, and the end face 14a of the opening 14 is enclosed by the folded back part. COPYRIGHT: (C)2007,JPO&INPIT