Abstract: Provided is a resin panel produced such that the positioning of a reinforcing material can be precisely done, rattling movement is prevented and distortion by molding shrinkage is not caused because the reinforcing materials are maintained in the foam. A resin panel is a hollow double-wall structure including a front wall, a back wall and a peripheral wall joining the front wall and back wall together. The peripheral wall of the resin panel has a welded part on its entire periphery. Within a hollow part is inner packed a foam made of a thermoplastic resin that is formed in advance in the substantially the same shape as the shape of the space within the hollow part. The foam is welded on the inner wall faces of the front wall and back wall of the resin panel. In the foam are formed accommodation parts for accommodating reinforcing materials. The reinforcing materials are lengthwise. The foam intervenes between the ends of both of the reinforcing materials and the peripheral wall.

Abstract: A double-walled hollow panel (A) has a first wall (21) and a second wall (22) which are made of thermoplastic resin and arranged separated from each other. Longitudinal inner ribs (11) and lateral inner ribs (12) arranged so as to cross the longitudinal inner ribs (11) are formed in a space (V) between the first and second walls (21, 22) so as to extend through the first wall (21) and be fusion bonded to the second wall (22). The longitudinal inner ribs (11) and the lateral inner ribs (12) are integrated together via crossing sections (13). Each crossing section (13) has a hole (H) not fusion bonded to the second wall (22), and the holes (H) interconnects adjacent small spaces.

Abstract: A pallet 10 having a hollow double-walled structure formed by blow molding includes a first wall 13 on which a cargo is placed, a second wall 14 spaced apart from the first wall 13 by a predetermined distance, and inner ribs that connect the first wall 13 and the second wall 14. In the pallet 10, the inner ribs are respectively formed by continuously abutting and integrating end surfaces of first inner ribs 13a and 13b projecting from the first wall 13 toward a hollow portion and end surfaces of second inner ribs 14a and 14b projecting from the second wall 14 toward the hollow portion.

Abstract: A double-walled hollow panel having high rigidity against bending, in which longitudinal inner ribs and lateral inner ribs are connected and integrated with each other without intervals between the longitudinal and lateral inner ribs. A double-walled hollow panel (A) has a first wall (21) and a second wall (22) which are made of thermoplastic resin and arranged separated from each other. Longitudinal inner ribs (11) and lateral inner ribs (12) arranged so as to cross the longitudinal inner ribs (11) are formed in a space (V) between the first and second walls (21, 22) so as to extend through the first wall (21) and be fusion bonded to the second wall (22). The longitudinal inner ribs (11) and the lateral inner ribs (12) are integrated together via crossing sections (13). The space (V) is partitioned by the longitudinal inner ribs (11) and the lateral inner ribs (12) into small spaces each having four sides surrounding the small space.

Abstract: Problem to be Solved The present invention is directed to providing a pallet having a large thickness, having inner ribs not easily broken formed therein, and having high bending strength. Solution A pallet 10 having a hollow double-walled structure formed by blow molding includes a first wall 13 on which a cargo is placed, a second wall 14 spaced apart from the first wall 13 by a predetermined distance, and inner ribs that connect the first wall 13 and the second wall 14. In the pallet 10, the inner ribs are respectively formed by continuously abutting and integrating end surfaces of first inner ribs 13a and 13b projecting from the first wall 13 toward a hollow portion and end surfaces of second inner ribs 14a and 14b projecting from the second wall 14 toward the hollow portion.

Abstract: Provided is a resin panel produced such that the positioning of a reinforcing material can be precisely done, rattling movement is prevented and distortion by molding shrinkage is not caused because the reinforcing materials are maintained in the foam. A resin panel is a hollow double-wall structure including a front wall, a back wall and a peripheral wall joining the front wall and back wall together. The peripheral wall of the resin panel has a welded part on its entire periphery. Within a hollow part is inner packed a foam made of a thermoplastic resin that is formed in advance in the substantially the same shape as the shape of the space within the hollow part. The foam is welded on the inner wall faces of the front wall and back wall of the resin panel. In the foam are formed accommodation parts for accommodating reinforcing materials. The reinforcing materials are lengthwise. The foam intervenes between the ends of both of the reinforcing materials and the peripheral wall.