Composite structural board

#The present disclosure generally relates to a composite structural board comprised of a stiffener and a plastic board for manufacturing furniture.

#As common materials in the furniture manufacturing, solid wood boards and curved planks may be used to manufacture tables, seat plates and backrests of chairs, horizontal and vertical partitions of book shelves or cabinets, drawer plates, and the like. However, these materials consume large quantities of wood and is limited by use occasions and service life.

#Nowadays, for the objectives of protecting the environment, reducing production costs and the like, more and more plastic boards are used to substitute for wooden boards in furniture products. A plastic board may be formed by injection molding or blow molding. The injection-molded plastic board typically has a limited strength. Although the blow molded plastic has a terse appearance and can be easily cleaned, it is of a large thickness. In particular, for a large-scale furniture product, the blow-molded plastic board needs a long production cycle and thus results in low furniture manufacturing efficiency. Moreover, to manufacture a large blow-molded plastic board, there arises a need for a large mould and a blow molding machine for performing a complicated manufacturing process, incurring high production costs. Metal boards may also be used for manufacturing furniture. However, as the machined metal board is dull in color and texture, it has limited applications.

#FIG. 1 illustrates a first embodiment of a double-layer composite structural board according to the present disclosure;

#FIG. 2 is an enlarged view of the part A of the double-layer composite structural board as shown in FIG. 1;

#FIG. 3 illustrates a second embodiment of a double-layer composite structural board according to the present disclosure;

#The description about directions in any embodiment, for example, “upper/lower,” “left/right,” “top/bottom,” and the like, is provided merely based on the drawings for illustration, without suggesting any limitation to the present disclosure.

#In a first embodiment according to the present disclosure as shown in FIGS. 1 and 2, the composite structural board 1 is mainly comprised of three components: a face plate 2 facing outwards in normal use, a base plate 3 fixed to the face plate via an adhesive or any other feasible manner, and a stiffener 4 disposed at the peripheral portion of the face plate 2 and the base plate 3.

#The face plate 2 has a main body portion 2c that is substantially in the same plane and a peripheral portion 2a surround the main body portion formed by the main body portion bent downwards, and the face plate 2 includes an upper surface facing outwards in normal use and a lower surface facing inwards in normal use. The base plate 3 is provided thereon with a plurality of protrusions or protrusion arrays 3a formed integrally and distributed substantially uniformly, where the lower surface of the face plate 2 is adhered to and supported on top surfaces of the plurality of protrusions 3a by thermal welding, and a circumferential edge of the base plate 3 abuts against the inner surface of the peripheral portion 2a of the face plate along the horizontal direction. Preferably, the adhesive is coated over the top surfaces of the protrusions 3a, forming dotted adhesion to the lower surface of the face plate 2.