Abstract: Provided is a composition for a glass fiber having a high elastic modulus and satisfactory productivity. The composition for a glass fiber includes, in terms of mass %, 0% to 1% of Li2O+Na2O+K2O, and has SiO2/Al2O3 of from 1 to 4 and MgO/CaO of from 0.2 to 3.9 in terms of mass ratio.

Abstract: A pharmaceutical container of the present invention is a pharmaceutical container including at least a container and a coating layer, and is characterized that the coating layer is coated on at least an inner surface of the container and the coating layer contains a silicone-based resin.

Abstract: Provided is a glass fiber, which achieves both of a low spinning temperature, and a low dielectric constant and a low dielectric loss tangent. The glass fiber includes as a glass composition, in terms of mass %, 40% to 80% of SiO2, 0% to 20% of Al2O3, and 10% to 30% of B2O3, includes at least one kind selected from MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, ZrO2, Fe2O3, SnO2, F, and Cl, has a total content of MoO3, Cr2O3, Pt, and Rh of from 0.01 ppm to 500 ppm, and has a value of TiO2 (mass %)×MoO3 (ppm) of 3,100 or less.

Abstract: Provided is a glass fiber, which achieves both of a low spinning temperature, and a low dielectric constant and a low dielectric loss tangent. The glass fiber includes as a glass composition, in terms of mass %, 40% to 80% of SiO2, 0% to 20% of Al2O3, and 10% to 30% of B2O3, includes at least one kind selected from MgO, Cao, Sro, Bao, Li2O, Na2O, KO, ZrO2, Fe2O3, SnO2, F, and Cl, has a total content of MoO3, Cr2O3, Pt, and Rh of from 0.01 ppm to 500 ppm, and has a value of TiO2 (mass %)×MoO3 (ppm) of 3,100 or less.

Abstract: Provided is a glass fiber, which achieves both of a low spinning temperature, and a low dielectric constant and a low dielectric loss tangent. The glass fiber includes as a glass composition, in terms of mass %, 40% to 80% of SiO2, 0% to 20% of Al2O3, and 10% to 30% of B2O3, includes at least one kind selected from MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, ZrO2, Fe2O3, SnO2, F, and Cl, has a total content of MoO3, Cr2O3, Pt, and Rh of from 0.01 ppm to 500 ppm, and has a value of TiO2 (mass %)×MoO3 (ppm) of 3,100 or less.

Abstract: Provided is a glass fiber, which achieves both of a low spinning temperature, and a low dielectric constant and a low dielectric loss tangent. The glass fiber includes as a glass composition, in terms of mass %, 40% to 80% of SiO2, 0% to 20% of Al2O3, and 10% to 30% of B2O3, includes at least one kind selected from MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, ZrO2, Fe2O3, SnO2, F, and Cl, has a total content of MoO3, Cr2O3, Pt, and Rh of from 0.01 ppm to 500 ppm, and has a value of TiO2 (mass %)×MoO3 (ppm) of 3,100 or less.

Abstract: Provided is a glass fiber, which achieves both of a low spinning temperature, and a low dielectric constant and a low dielectric loss tangent. The glass fiber includes as a glass composition, in terms of mass %, 40% to 80% of SiO2, 0% to 20% of Al2O3, and 10% to 30% of B2O3, includes at least one kind selected from MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, ZrO2, Fe2O3, SnO2, F, and Cl, has a total content of MoO3, Cr2O3, Pt, and Rh of from 0.01 ppm to 500 ppm, and has a value of TiO2 (mass %)×MoO3 (ppm) of 3,100 or less.

Abstract: A tube glass of the present invention includes an alkali silicate glass, in which a glass composition is substantially free of B2O3 and Al2O3, and a loss in mass ? (mg/dm2) in an alkali resistance test in accordance with ISO 695 (199105-15) is classified as Class A1.

Abstract: A weld bead cutting device is configured such that, a liner made as liner portions are abutted on and welded to each other is rotated around a rotation axis extending in a direction along an abutting direction, and a weld bead is cut with a cutting tool arranged among rollers in a state where the rollers are pressed against an outer peripheral surface of the liner, the rollers being arranged on both sides of the weld bead on the liner in a direction along an extending direction of the rotation axis.

Abstract: Provided is a foreign substance inspection method for inspecting presence or absence of a foreign substance embedded in a tubular resin molded product. A dome is prepared. The foreign substance inspection method includes: a first measurement step of measuring a dimension of a first projection image of the embedded foreign substance; a second measurement step of measuring a dimension of a second projection image of the embedded foreign substance: and a calculation step of calculating the dimension of the embedded foreign substance based on a proportional relationship between the dimension of each of the projection images to a distance from a corresponding one of the light sources to the each of the projection images and the dimension of the embedded foreign substance to a distance from the corresponding one of the light sources to the embedded foreign substance.

Abstract: Provided is a composition for a glass fiber having a high elastic modulus and satisfactory productivity. The composition for a glass fiber includes, in terms of mass %, 0% to 1% of Li2O+Na2O+K2O, and has SiO2/Al2O3 of from 1 to 4 and MgO/CaO of from 0.2 to 3.9 in terms of mass ratio.

Abstract: Positions of both end edges of a weld bead in a bead width direction are measured over the entire circumference of a liner in a circumferential direction of the liner. Based on information on the position of the end edge, bead profile information being information on a shape of the end edge of the weld bead over the entire circumference of the liner in the circumferential direction is created. Based on this bead profile information, machining information of the liner per rotation of the liner being position information of a cutting tool in the bead width direction per phase in the circumferential direction of the liner is created so that a moving locus of the cutting tool relative to the liner along the circumferential direction of the liner approximates the shape of the end edge of the weld bead over the entire circumference of the liner in the circumferential direction.

Abstract: A pharmaceutical container of the present invention is a pharmaceutical container including at least a container and a coating layer, and is characterized that the coating layer is coated on at least an inner surface of the container and the coating layer contains a silicone-based resin.

Abstract: Provided is a foreign substance inspection method for inspecting presence or absence of a foreign substance embedded in a tubular resin molded product. A dome is prepared. The foreign substance inspection method includes: a first measurement step of measuring a dimension of a first projection image of the embedded foreign substance; a second measurement step of measuring a dimension of a second projection image of the embedded foreign substance: and a calculation step of calculating the dimension of the embedded foreign substance based on a proportional relationship between the dimension of each of the projection images to a distance from a corresponding one of the light sources to the each of the projection images and the dimension of the embedded foreign substance to a distance from the corresponding one of the light sources to the embedded foreign substance.

Abstract: Positions of both end edges of a weld bead in a bead width direction are measured over the entire circumference of a liner in a circumferential direction of the liner. Based on information on the position of the end edge, bead profile information being information on a shape of the end edge of the weld bead over the entire circumference of the liner in the circumferential direction is created. Based on this bead profile information, machining information of the liner per rotation of the liner being position information of a cutting tool in the bead width direction per phase in the circumferential direction of the liner is created so that a moving locus of the cutting tool relative to the liner along the circumferential direction of the liner approximates the shape of the end edge of the weld bead over the entire circumference of the liner in the circumferential direction.

Abstract: A borosilicate glass for a pharmaceutical container includes SiO2, Al2O3, B2O3, and R2O (R is one or more kinds selected from Li, Na, and K) as essential components, in which a content of CaO is equal to or greater than 0 and smaller than 0.5 mol %, a value of (Na2O+K2O+Li2O—Al2O3)/B2O3 is 0.315 to 0.350 in terms of a molar ratio, and BaO is not substantially included.

Abstract: A borosilicate glass for a pharmaceutical container includes SiO2, Al2O3, B2O3, and R2O (R is one or more kinds selected from Li, Na, and K) as essential components, in which a content of CaO is equal to or greater than 0 and smaller than 0.5 mol %, a value of (Na2O+K2O+Li2O—Al2O3)/B2O3 is 0.315 to 0.350 in terms of a molar ratio, and BaO is not substantially included.

Abstract: A weld bead cutting device is configured such that, a liner made as liner portions are abutted on and welded to each other is rotated around a rotation axis extending in a direction along an abutting direction, and a weld bead is cut with a cutting tool arranged among rollers in a state where the rollers are pressed against an outer peripheral surface of the liner, the rollers being arranged on both sides of the weld bead on the liner in a direction along an extending direction of the rotation axis.

Abstract: A mixed raw material for a glass of the present invention is a mixed raw material for a silicate glass, including at least a silica sand and a feldspar, in which with respect to the silica glass, a D50 value is 100 ?m or more and 300 ?m or less, the uniformity represented by a value obtained by dividing a D60 value by a D10 value is less than 2.0, and with respect to the feldspar, a D50 value of is 100 ?m or more and 400 ?m or less, and the uniformity represented by a value obtained by dividing a D60 value by a D10 value is 1.5 or more and less than 4.0. The mixed raw material for a silicate glass is melted and formed into a tube shape.

Abstract: A borosilicate glass for a pharmaceutical container having high appearance quality, particularly a small number of air lines, and a glass tube for a pharmaceutical container are provided. The borosilicate glass for a pharmaceutical container contains, in mass %, from 70.0 to 78.0% of SiO2, from 5.0 to 8.0% of Al2O3, from 5.0 to 12.0% of B2O3, from 0 to 4.0% of CaO, from 0 to 4.0% of BaO, from 4.0 to 8.0% of Na2O, from 0 to 5.0% of K2O and from 0.001 to 1.0% of SnO2.