Abstract: A rubber body as an elastic body for closure closes a gap between a partition plate in which a through-hole is formed and refrigeration piping inserted through the through-hole. The rubber body for closure includes a pressurized insertion receiving portion having formed therein an opening into which the refrigeration piping is pressed and inserted, the pressurized insertion receiving portion elastically pressing and contacting in a liquid-tight manner an external surface of the refrigeration piping; a fitting portion fitted in a liquid-tight manner the peripheral edge portion of the through-hole in a state in which an inner circumferential surface of the through-hole is elastically pressed; and a displacement allowance portion that closes a gap between the pressurized insertion receiving portion and the fitting portion, and to allow a relative displacement of the pressurized insertion receiving portion and the fitting portion in a direction parallel to the partition plate.

Abstract: A curvature variable mirror includes a mirror base material that is configured such that the curvature is variable and that reflects laser light on the mirror reflective surface side, wherein the mirror base material is formed by using spring-material copper alloy, and the spring-material copper alloy is constituted by using any of phosphor bronze, copper-nickel-zinc alloy, chromium copper, zirconium copper, titanium copper alloy, copper-nickel alloy, and alloy obtained by adding at least one of Ni (nickel), Sn (tin), Si (silicone), Mg (magnesium), Zn (zinc), Mn (manganese), Pb (lead), Fe (iron), and Al (aluminum) to copper.

Abstract: A curvature variable mirror includes a mirror base material that is configured such that the curvature is variable and that reflects laser light on the mirror reflective surface side, wherein the mirror base material is formed by using spring-material copper alloy, and the spring-material copper alloy is constituted by using any of phosphor bronze, copper-nickel-zinc alloy, chromium copper, zirconium copper, titanium copper alloy, copper-nickel alloy, and alloy obtained by adding at least one of Ni (nickel), Sn (tin), Si (silicone), Mg (magnesium), Zn (zinc), Mn (manganese), Pb (lead), Fe (iron), and Al (aluminum) to copper.

Abstract: A method for producing a bottle-shaped container that is highly thermally resistant and shows an excellent shaping/shape-keeping property in a short period of time is provided.

Abstract: A method for producing a bottle-shaped container that is highly thermally resistant and shows an excellent shaping/shape-keeping property in a short period of time is provided.

Abstract: A bottle-shaped container shows a large critical strength against buckling and is made of a reduced amount of synthetic resin material. A manufacturing method can manufacture such a bottle-shaped container. A lightweight bottle-shaped container made of synthetic resin and formed by biaxially-oriented blow-molding, characterized in that a wall thickness is increased to 109% or more of an average wall thickness of blow-molded pad of the wall at an infection point between a portion having a transversal cross sectional area and a portion having a different transversal cross sectional area in a cylindrical wall. The wall is thicker between the heel and the bottom, or at the waist, at the recessed rib, or at the projection.