| 摘要 |
PROBLEM TO BE SOLVED: To improve draining performance and facilitate cleaning by seamlessly joining a top plate with a washbowl and to eliminate troublesome fitting works. SOLUTION: This fitting method of a resin washbowl 5 is based on (A) a process of forming a projection part 3 by forming a groove 21 having such an extent as inserting an outer circumferential edge 6 of the resin washbowl 5 in the rear surface of a top plate 10 composed of a surface material 1 and backing 2, and a groove 22 in a position separated outward from the groove 21, (B) a process of providing a level difference by warping the inside and the outside of the projection part 3 with the projection part 3 set to a base point, (C) a process of applying adhesive 8 to the bottom part of the groove 21 and inserting and sticking the outer circumferential edge 6 of the resin washbowl 5, (D) a process of filling resin between the outer circumferential edge 6 of the resin washbowl 5 and the projection part 3 and between the backing 2 and the projection part 3, and (E) a process cutting an islet inside the resin washbowl 5 after hardening the resin 9 and finishing it.
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