Abstract: The present invention relates to a metal mold for producing a synthetic resin molded product in a compression-molding method, which is comprises a pair of male and female molds which are allowed to mutually slide over a contact face, with the outer circumferential face of the male mold and the inner circumferential face of the female mold serving as sliding portions at the time of mold-clamping, characterized in that either the male mold or the female mold or both of the molds is constituted by a mold main body and a sliding member. The sliding member forms a portion of the metal mold over the entire sliding portions or on a portion thereof, and is removably attached to the mold main body. The same metal mold may be used for production of a non-laminated synthetic resin molded product and a laminated product having the same design by replacing only the sliding member, without the need for using different molding devices corresponding to the respective production processes.

Abstract: The present invention relates to a metal mold for producing a synthetic resin molded product in a compression-molding method.

Abstract: A molded foam resin, surface of which can be designed easily at low cost, a process for forming a molded foam resin, and a speaker diaphragm made of molded foam resin are provided, in which a molded foam resin is formed by injection molding of foaming agent-containing resin and has a foamed zone having a three layer-structure consisting of a foamed layer inside and a non-foamed layer outside and a non-foamed zone having a single layer-structure consisting of a non-foamed layer.

Abstract: A molded foam resin, surface of which can be designed easily at low cost, a process for forming a molded foam resin, and a speaker diaphragm made of molded foam resin are provided, in which a molded foam resin is formed by injection molding of foaming agent-containing resin and has a foamed zone having a three layer-structure consisting of a foamed layer inside and a non-foamed layer outside and a non-foamed zone having a single layer-structure consisting of a non-foamed layer.

Abstract: Poly-norbornene based rubber is foamed and expanded to mold a speaker foamed-rubber edge. Short fibers are blended into the poly-norbornene based rubber to have orientation in the radial direction of the edge.

Abstract: The present invention provides a multilayer molded article comprising at least two skin materials attached in once piece to the surface of base materials made of thermoplastic resin by mutual contact of the two skin materials in overlapped edge(s), said two skin materials being adjacent, wherein the base material on the back of one skin material and the base material on the back of the other skin material are integrated in one piece by fusion in at least one of the overlapped edges of the adjacent two skin materials, such that the end of the overlapped edge of the two skin materials bent toward the base materials is enclosed by plural ribs provided in the overlapped edge of the two skin materials on the back of the base materials, said multilayer molded article wherein the base materials are integrated reliably to the skin materials and the base materials on the back of each skin material are mutually integrated strongly to achieve high strength and excellent appearance, so that the multilayer molded article

Abstract: Particulate polycondensates of thiourea, thiosemicarbazide, or thiocarbazide with aldehydes and phenolic or amine constituents adsorb heavy metals from aqueous solutions of their compounds, also mercury from its vapors.