Abstract: An epoxy resin composition contains a curing agent A, a curing agent B, a curing agent C, an epoxy resin D, an epoxy resin E, and resin particles F, wherein the curing agent A is an aromatic polyamine having a substituent selected from an alkyl group, an aromatic group, and a halogen group at each of two ortho positions of an amino group, the curing agent B is an aromatic polyamine that is liquid at 25° C., and the curing agent C is an aromatic polyamine having only one electron donating substituent or no substituent at an ortho position of an amino group, the epoxy resin D is constituted by an epoxy resin which is composed of a monomer containing 4 or more glycidyl groups, and the epoxy resin E is constituted by an epoxy resin which is composed of a monomer containing 2 or 3 glycidyl groups.

Abstract: To produce a calcium carbonate in a controlled form while carbon dioxide gas is efficiently used. A method for producing a calcium carbonate comprises a carbon dioxide gas absorption step of allowing an aqueous sodium hydroxide solution at a concentration of 5 to 21% to absorb carbon dioxide gas to give an aqueous sodium carbonate solution at a concentration of 4 to 24%; a hydration step of reacting calcium oxide with an aqueous sodium hydroxide solution at a concentration of 0 to less than 6% to give a lime milk that is a suspension of calcium hydroxide having a BET specific surface area of 5 to 40 m2/g; and a carbonation step of adding the aqueous sodium carbonate solution to the lime milk and performing reaction.

Abstract: A pallet having excellent thermal insulation performance and cushioning property with respect to goods-conveyed while ensuring the strength of the outer surface of the pallet. The pallet includes a plate-like pallet body made of foamed resin, the plurality of legs provided on the bottom surface of the pallet body, and the resin sheet integrated from the bottom surface side of the pallet body by vacuum-forming. Further, the top surface of the pallet body includes the loading surface on which goods-conveyed are placed, and the step portion formed in a shape down-step from the outer peripheral edge of the loading surface to the side surface of the pallet body. The resin sheet covers the bottom surface of the pallet body, the legs, the side surface and the step portion of the pallet body, and the loading surface is not covered with the resin sheet.

Abstract: In a pallet manufacturing method, variations of pallets, having different thicknesses of pallet bodies, heights of legs, or foaming ratios thereof, are manufactured at low cost and with high quality. The method includes a pallet body molding step for molding a plurality of the pallet bodies of a plurality of types having different thicknesses or expansion ratios of foaming; a leg molding step for molding, separately from the pallet body, a plurality of legs of a plurality of types having different heights or expansion ratios of foaming; and a vacuum forming step for forming a resin sheet for covering and integrating the pallet body and the legs from a bottom surface side of the pallet by vacuum integral forming after the pallet body and the legs are selected, respectively, from the plurality of types and assembled in a state that the legs are mounted on the pallet body.

Abstract: A pallet having excellent thermal insulation performance and cushioning property with respect to goods-conveyed while ensuring the strength of the outer surface of the pallet. The pallet includes a plate-like pallet body made of foamed resin, the plurality of legs provided on the bottom surface of the pallet body, and the resin sheet integrated from the bottom surface side of the pallet body by vacuum-forming. Further, the top surface of the pallet body includes the loading surface on which goods-conveyed are placed, and the step portion formed in a shape down-step from the outer peripheral edge of the loading surface to the side surface of the pallet body. The resin sheet covers the bottom surface of the pallet body, the legs, the side surface and the step portion of the pallet body, and the loading surface is not covered with the resin sheet.