A process for producing a plastic lens includes a step of stirring and mixing a solution including a polymerization reactive compound in a preparation tank; a step of transferring the polymerizable composition obtained in the step from the preparation tank to a lens casting mold; a step of curing the polymerizable composition; and a step of obtaining a plastic lens molded product by separating the obtained resin from the lens casting mold. The step of transferring the polymerizable composition includes a step of re-mixing the polymerizable composition discharged from the preparation tank and injecting the polymerizable composition into the lens casting mold.

A resin molding method is capable of reducing the use amount of micropellets and obtaining a resin molded article having required characteristics. A resin molding method includes a disposing step of disposing a preliminary molded body laminated and formed in a three-dimensional shape in a molding die, a filling step of heating and melting the preliminary molded body by an electromagnetic wave transmitted through the molding die and filling the molding die with a molten resin material, and a cooling step of cooling and solidifying the molten resin material in the molding die. In the cooling step, a resin molded article integrated so as to eliminate a lamination interface of the preliminary molded body is formed in the molding die.

A resin molding method is capable of reducing the use amount of micropellets and obtaining a resin molded article having required characteristics. A resin molding method includes a disposing step of disposing a preliminary molded body laminated and formed in a three-dimensional shape in a molding die, a filling step of heating and melting the preliminary molded body by an electromagnetic wave transmitted through the molding die and filling the molding die with a molten resin material, and a cooling step of cooling and solidifying the molten resin material in the molding die. In the cooling step, a resin molded article integrated so as to eliminate a lamination interface of the preliminary molded body is formed in the molding die.

A method for manual casting of polymers, is used for production of a molded part. The production of the molded part comprises providing a mold with a cavity, preparing a liquid polymer according to a recipe, manually casting the liquid polymer into the mold and solidifying the liquid polymer in the mold resulting in the molded part. A system comprises the mold and at least one sensor Wherein the system uses parameter data to calculate the recipe. The system comprises an electronic device and a display, wherein the electronic device controls the display. The display shows during the production of the molded part at least a part of at least one production step of the recipe.

A method for manual casting of polymers, is used for production of a molded part. The production of the molded part comprises providing a mold with a cavity, preparing a liquid polymer according to a recipe, manually casting the liquid polymer into the mold and solidifying the liquid polymer in the mold resulting in the molded part. A system comprises the mold and at least one sensor Wherein the system uses parameter data to calculate the recipe. The system comprises an electronic device and a display, wherein the electronic device controls the display. The display shows during the production of the molded part at least a part of at least one production step of the recipe.

A process for forming a molded, heatable steering wheel assembly may include providing or obtaining a steering wheel frame including at least one hand grip coupled to one or more spokes, coupling at least one heating element to, or spacing the at least one heating element from, at least a portion of the at least one hand grip to form a steering wheel assembly, placing the steering wheel assembly in a mold, dispensing a formable medium into the mold such that the formable medium encases at least the at least one hand grip and the at least one heating element, and curing the formable medium to form the molded, heatable steering wheel assembly.

A process for forming a molded, heatable steering wheel assembly may include providing or obtaining a steering wheel frame including at least one hand grip coupled to one or more spokes, coupling at least one heating element to, or spacing the at least one heating element from, at least a portion of the at least one hand grip to form a steering wheel assembly, placing the steering wheel assembly in a mold, dispensing a formable medium into the mold such that the formable medium encases at least the at least one hand grip and the at least one heating element, and curing the formable medium to form the molded, heatable steering wheel assembly.

A method for manufacturing a porous film includes: a first step of preparing droplets (D) which are formed from a first liquid into spheres with a predetermined diameter of 10 μm or more and 2000 μm or less and a second liquid (L2) which includes a curing agent which cures by imparting energy or a curing agent which cures due to change in pH and includes droplets dispersed therein; a second step of injecting the droplets and the second liquid into a gap between a pair of substrates (31 and 32); a third step of curing the second liquid to form an external phase; and the fourth step of removing the droplets in the external phase to form hole sections.

A method for manufacturing a porous film includes: a first step of preparing droplets (D) which are formed from a first liquid into spheres with a predetermined diameter of 10 μm or more and 2000 μm or less and a second liquid (L2) which includes a curing agent which cures by imparting energy or a curing agent which cures due to change in pH and includes droplets dispersed therein; a second step of injecting the droplets and the second liquid into a gap between a pair of substrates (31 and 32); a third step of curing the second liquid to form an external phase; and the fourth step of removing the droplets in the external phase to form hole sections.

A manufacturing method for a pressure tank includes disposing a preform, in which a fiber layer is formed on an outer surface of a liner that forms an internal space of a pressure tank, within a mold, and rotating the preform in a circumferential direction within the mold with a central axis of the preform as a rotation center while resin is injected toward the preform disposed within the mold from a gate.