Abstract: An adhesion interface observation method is adapted to observe a region in vicinity of an adhesion interface following adhesion and curing of an adhesive that is coated on adhered members and adheres the adhered members to each other. The adhesion interface observation method includes: exposing the cured adhesive by removing one of the adhered members; forming an observation region by cutting a predetermined part of the adhesive by a predetermined thickness; obliquely cutting the observation region in an oblique direction that is inclined with respect to a thickness direction of the observation region; and observing, by a surface-enhanced Raman scattering spectroscopy, Raman scattering light generated by applying excitation light to an observation possible region that is positioned on a side, of a part of the observation region having been subjected to the oblique cutting, on which a thickness of the part of the observation region is small.

Abstract: A resin laminated steel plate includes steel plates and resin layers. The resin layers are interposed between the steel plates. Each of the resin layer includes resin-absent areas where no resin exists. The resin-absent areas provide gaps in a predetermined range between the steel plates. Resin materials constituting the each of the resin layers are dotted such that the resin-absent areas include areas where no resin material exists.

Abstract: Provided are a kaolin clay for a thermoplastic resin composition that can provide high impact strength and glossiness and a thermoplastic resin composition containing the same. A kaolin clay for a thermoplastic resin composition is subjected to a surface treatment with 0.2 to 10 parts by mass of at least one selected from the group consisting of methyl silicate, ethyl silicate, propyl silicate, and butyl silicate relative to 100 parts by mass of the kaolin clay.

Abstract: A method of producing a fiber-reinforced plastic includes disposing a transparent film as an outermost layer on a lower die of a molding die, disposing a base sheet formed of a fiber fabric on the transparent film, closing the molding die with an upper die, and injecting a matrix resin into the molding die closed. The transparent film has grooves on a surface facing the base sheet. In the disposing, the base sheet is disposed such that the grooves are located between adjacent weaving gaps of the base sheet.

Abstract: Provided are a kaolin clay for a thermoplastic resin composition that can provide high impact strength and glossiness and a thermoplastic resin composition containing the same. A kaolin clay for a thermoplastic resin composition is subjected to a surface treatment with 0.2 to 10 parts by mass of at least one selected from the group consisting of methyl silicate, ethyl silicate, propyl silicate, and butyl silicate relative to 100 parts by mass of the kaolin clay.

Abstract: A method of producing a fiber-reinforced plastic includes disposing a transparent film as an outermost layer on a lower die of a molding die, disposing a base sheet formed of a fiber fabric on the transparent film, closing the molding die with an upper die, and injecting a matrix resin into the molding die closed. The transparent film has grooves on a surface facing the base sheet. In the disposing, the base sheet is disposed such that the grooves are located between adjacent weaving gaps of the base sheet.

Abstract: Prior to welding together two overlapped plated steel sheets 4 and 5 by laser lap welding that irradiates parts of the plated steel sheets (4, 5) extending on a weld line (Lw), slits (4b) are formed intermittently in the upper plated steel sheet (4) with a laser beam (L). Subsequently, a welding head (1) is moved along the weld line (Lw) while the upper plated steel sheet (4) is pressed against the lower plated steel sheet (5) by pressure rollers. Parts of the upper plated steel sheet (4) extending on the weld line (Lw) and not provided with the slits (4b) are irradiated with the laser beam to laser-weld the plated steel sheets (4, 5) together. A vapor of the component of the coating layers coating the joining surfaces (4a, 5a) of the plated steel sheets (4, 5) produced from the coating layers by the heat produced by the laser beam is discharged through the slits (4b).

Abstract: Prior to welding together two overlapped plated steel sheets 4 and 5 by laser lap welding that irradiates parts of the plated steel sheets (4, 5) extending on a weld line (Lw), slits (4b) are formed intermittently in the upper plated steel sheet (4) with a laser beam (L). Subsequently, a welding head (1) is moved along the weld line (Lw) while the upper plated steel sheet (4) is pressed against the lower plated steel sheet (5) by pressure rollers. Parts of the upper plated steel sheet (4) extending on the weld line (Lw) and not provided with the slits (4b) are irradiated with the laser beam to laser-weld the plated steel sheets (4, 5) together. A vapor of the component of the coating layers coating the joining surfaces (4a, 5a) of the plated steel sheets (4, 5) produced from the coating layers by the heat produced by the laser beam is discharged through the slits (4b).