| 摘要 |
PROBLEM TO BE SOLVED: To provide the structure of a door in which the occurrence of warp or distortion can be prevented by a simple means and a plywood as a door main body material used in the door. SOLUTION: In this door formed by fixing a frame material 1 to at least the peripheral edge part of a door main body material 6, the door main body material 6 is a laminated plate formed by bonding a surface material 6b to both sides of a core material 6a by a pressure sensitive adhesive double coated tape 7, the frame material 1 has a substantially rectangular cross section, an insert groove 2 where the door main body material 6 is inserted is formed in the inside surface 1a of the material 1, the corner part with the surface side 1c of the outside surface 1b is eliminated to form a design surface, and a recessed groove 4 is formed in the back side 1d, or a warp preventing iron plate is mounted at the deepest part in the door main body material insert groove 2.
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