Abstract: The present invention relates to a glass ceramic having a three-dimensional shape including a plurality of round shapes including a minimum round shape having an average curvature radius of 5.0×102 mm or less and a maximum round shape having an average curvature radius of 1.0×103 mm or more, in which the glass ceramic has a sheet thickness t [mm], and a value obtained by dividing a maximum value of retardation [nm] measured by the following measurement method by the sheet thickness t [mm] is 50 [nm/mm] or less, measurement method: retardation is measured using a birefringence measuring device by vertically irradiating one or more points on an arc of each of the round shapes with light having a wavelength of 543 nm.

Abstract: An electricity storage device includes an electricity storage module and a cooling device disposed adjacent to the electricity storage module. The cooling device includes a first cooling layer that is adjacent to the electricity storage module and a second cooling layer that is located on the opposite side of the first cooling layer from the electricity storage module. In the first cooling layer, a plurality of first cooling channels that is disposed at intervals in an array direction and first walls that are located between the first cooling channels are formed. In the second cooling layer, a plurality of second cooling channels that is disposed at intervals in the array direction and second walls that are located between the second cooling channels are formed. At least some of the first walls are disposed so as to be offset from the second walls.

Abstract: The present invention relates to a glass in which: the glass is a crystallized glass; the glass has a difference log ??log ?0 (dPa·s) between a logarithm log ? (dPa·s) of bulk viscosity ? (dPa·s) and a logarithm log ?0 (dPa·s) of local viscosity ?0 (dPa·s) of larger than 0 and 1.8 or smaller, in a temperature range in which the logarithm log ?0 (dPa·s) of the bulk viscosity ? (dPa·s) is 11.4 or larger and 12.7 or smaller.

Abstract: A 3D cover glass, having a polygonal shape in a plan view which corner part may comprise a rounded portion, and containing a central part being flat plane, and curved parts each with a three-dimensional curved surface having a curvature radius of 100 mm or less on peripheries of at least two of the sides of the polygonal shape, wherein the 3D cover glass shows the maximum value of retardation per 1 mm thickness being 16 nm/mm or less when measured by irradiating a light having a wavelength of 543 nm onto the central part orthogonally.

Abstract: An electricity storage device includes an electricity storage module and a cooling device disposed adjacent to the electricity storage module. The cooling device includes a first cooling layer that is adjacent to the electricity storage module and a second cooling layer that is located on the opposite side of the first cooling layer from the electricity storage module. In the first cooling layer, a plurality of first cooling channels that is disposed at intervals in an array direction and first walls that are located between the first cooling channels are formed. In the second cooling layer, a plurality of second cooling channels that is disposed at intervals in the array direction and second walls that are located between the second cooling channels are formed. At least some of the first walls are disposed so as to be offset from the second walls.

Abstract: A glass article including a first main surface, a second main surface, and an end face, in which: the glass article includes an antiglare layer on the first main surface side; the antiglare layer has a glass transition point Tg of equal to or less than a glass transition point Tg0 of the glass article at a center portion in a cross section along a thickness direction; and the first main surface has a protrusion diameter y (?m) that satisfies the relation (1) with respect to a 60° specular gloss (gloss value) x (%) of the first main surface, y>?0.0245x+3.65 (1).

Abstract: The present invention relates to a glass ceramic having a three-dimensional shape including plural R-shapes including a smallest R-shape whose average radius of curvature is 5.0×102 mm or less and a largest R-shape whose average radius of curvature is 1.0×103 mm or more, having a maximum value of retardations of 20 nm/mm or less, and having a haze value converted into a value corresponding to a thickness of 0.8 mm of 1.0% or less in the largest R-shape.

Abstract: An object of the present invention is to provide a chemically strengthened glass plate that is chemically strengthened and thereby increased in strength in its entirety, a portable information terminal using the chemically strengthened glass plate, and a manufacturing method of the a chemically strengthened glass plate. The chemically strengthened glass plate and the manufacturing method thereof according to the present invention is suitable for use in fields of portable information terminals, substrates, etc. in which glass plates having high resistance to impact are required.

Abstract: A method for producing a glass article from a glass member including a glass substrate including a first main surface, a second main surface and an end face, and an irregular layer formed in at least one of main surfaces, includes forming an irregular layer having a glass transition point Tg which is equal to or lower than a glass transition point in a central part of the glass member in a thickness-direction sectional view and performing a heat treatment on the glass member so as to have an equilibrium viscosity in the central part of the glass member in thickness-direction sectional view of 1017 Pa·s or lower.

Abstract: The present invention relates to a mold including a master mold having a first region master mold molding surface having a shape corresponding to a first region of a molded body, and a second region master mold molding surface having a shape corresponding to a second region of the molded body, and in which the master mold includes: an inner mold having the first region master mold molding surface; an outer mold having an accommodating concave portion capable of accommodating the inner mold therein and the second region master mold molding surface on at least a part of an outer edge of the accommodating concave portion; and a buffer material provided between the inner mold and a bottom surface of the accommodating concave portion, the buffer material being pressed and deformed with relative movement of the inner mold and the outer mold.

Abstract: A 3D cover glass, having a polygonal shape in a plan view which corner part may comprise a rounded portion, and containing a central part being flat plane, and curved parts each with a three-dimensional curved surface having a curvature radius of 100 mm or less on peripheries of at least two of the sides of the polygonal shape, wherein the 3D cover glass shows the maximum value of retardation per 1 mm thickness being 16 nm/mm or less when measured by irradiating a light having a wavelength of 543 nm onto the central part orthogonally.

Abstract: Provided is a molding die for 3D cover glass containing a pair of a convex mold and a concave mold each having a flat press surface A and a press surface B, in which the closest distance D between the press surfaces A of the convex mold and the concave mold during press-molding and the closest distance D1 between the press surfaces B of the convex mold and the concave mold during press-molding satisfy a predetermined conditions with respect to the plate thickness of a 3D cover glass as a final product.

Abstract: An object of the present invention is to provide a chemically strengthened glass plate that is chemically strengthened and thereby increased in strength in its entirety, a portable information terminal using the chemically strengthened glass plate, and a manufacturing method of the a chemically strengthened glass plate. The chemically strengthened glass plate and the manufacturing method thereof according to the present invention is suitable for use in fields of portable information terminals, substrates, etc. in which glass plates having high resistance to impact are required.

Abstract: A glass article including a first main surface, a second main surface, and an end face, in which: the glass article includes an antiglare layer on the first main surface side; the antiglare layer has a glass transition point Tg of equal to or less than a glass transition point Tg0 of the glass article at a center portion in a cross section along a thickness direction; and the first main surface has a protrusion diameter y (?m) that satisfies the relation (1) with respect to a 60° specular gloss (gloss value) x (%) of the first main surface, y>?0.0245x+3.65??(1).

Abstract: The present invention relates to a mold including a master mold having a first region master mold molding surface having a shape corresponding to a first region of a molded body, and a second region master mold molding surface having a shape corresponding to a second region of the molded body, and in which the master mold includes: an inner mold having the first region master mold molding surface; an outer mold having an accommodating concave portion capable of accommodating the inner mold therein and the second region master mold molding surface on at least a part of an outer edge of the accommodating concave portion; and a buffer material provided between the inner mold and a bottom surface of the accommodating concave portion, the buffer material being pressed and deformed with relative movement of the inner mold and the outer mold.

Abstract: Provided is a molding die for 3D cover glass containing a pair of a convex mold and a concave mold each having a flat press surface A and a press surface B, in which the closest distance D between the press surfaces A of the convex mold and the concave mold during press-molding and the closest distance D1 between the press surfaces B of the convex mold and the concave mold during press-molding satisfy a predetermined conditions with respect to the plate thickness of a 3D cover glass as a final product.

Abstract: There is provided a sealed secondary battery whose current-blocking system yields little change in the actuation pressure even on long-term use. The sealed secondary battery comprises a current-blocking system 80 that is actuated by a pressure rise inside a battery case 12 to disconnect conduction path between an electrode and an electrode terminal. Current-blocking system 80 comprises a pressure-sensitive member having a pressure-sensitive deformable portion 32 that deforms from a first state via snap-through deformation to a second state upon a pressure rise inside battery case 12, and is configured to disconnect the conduction path by snap-through deformation of pressure-sensitive deformable portion 30.

Abstract: A secondary battery 1 includes a conductive member 130 that is provided in the secondary battery 1, and a current interrupt device 105 that is provided in the secondary battery 1 and has a reversal plate 120 that is welded to the conductive member 130. The conductive member 130 and the reversal plate 120 have thicknesses of T1 and T2, respectively, in the part in which the conductive member 130 and the reversal plate 120 are opposed to and in contact with each other, and the thicknesses T1 and T2 satisfy the relationship T1/T2<1.5.

Abstract: A method for producing a glass article from a glass member including a glass substrate including a first main surface, a second main surface and an end face, and an irregular layer formed in at least one of main surfaces, includes forming an irregular layer having a glass transition point Tg which is equal to or lower than a glass transition point in a central part of the glass member in a thickness-direction sectional view and performing a heat treatment on the glass member so as to have an equilibrium viscosity in the central part of the glass member in thickness-direction sectional view of 1017 Pa·s or lower.

Abstract: A mold has a molding surface for hot molding of a body to be molded. The mold includes a glass having a porosity of 0.01% or more and containing 95 mol % or more of SiO2. A molding apparatus includes the mold. A method for producing a bent glass includes a placing step and a molding step. In the placing step, a glass to be molded is placed on a mold including a glass having a porosity of 0.01% or more. In the molding step, the glass to be molded which has been placed on the mold is heated, and then, the glass is caused to be molded to follow a molding surface of the mold.