| 摘要 |
PROBLEM TO BE SOLVED: To prevent deformation after burning by making the compression ratio of the upper end edge part of a rib to the lower end edge part of the tail part into shape thickness of the same. SOLUTION: A tile 1 having a rectangular front outer contour shape has a shape showing the face plate part 2 of a uniform flat face and a lapping rib 3 bent to the interior side provided along the upper end edge 3e. The side of the face plate part 2 to the rib 3 has uniform thickness, and an engaging part 4 for hooking to a substrate board except for both the ends of the width direction is provided on the rear face side of the rib 3. The engaging part 4 forms an inclination face 4a in the form of a dovetail foot, and is made an inclination face 4b cutting the thickness of an angular part being both the ends of the horizontal direction and facing downward. Inclination faces 5a, 5b, 5c, 5d continuing from the lower end edge 5e of the face plate part 2 are provided on the lower end of a tail part 5. A vertical long district positioned more outside than both the ends of right and left of the engaging part 4 and the tail part 5 is included in the rear face side of the face plate part 2, and the side edge part 6 of the same uniform thickness is provided. Thereby beauty can be held. |
