A joining method for joining a first member having a hole that is opened on at least one surface, to a second member including a material of which a melting temperature is lower than that of a constituent material of the first member, includes: laminating the second member on the first member so as to cover an opening of the hole; and introducing that material of the second member which is softened or melted into the hole through the opening and curing the material of the second member.

A joining method for joining a first member having a hole that is opened on at least one surface, to a second member including a material of which a melting temperature is lower than that of a constituent material of the first member, includes: laminating the second member on the first member so as to cover an opening of the hole; and introducing that material of the second member which is softened or melted into the hole through the opening and curing the material of the second member.

Various embodiments relate to plastic-metal junctions and methods of making the same via laser-assisted joining. The present invention provides a method of forming a junction between a metal form and a solid plastic. The method can include laser treating a surface of a metal form to generate a feature (e.g., a plurality of at least one of pores and grooves) in the surface of the metal, wherein the laser has an angle of incidence with the surface of the metal of other than 0 degrees. The method can include contacting the metal surface including the feature with a flowable resin composition. The method can include curing the flowable resin composition to form the solid plastic, to provide the junction between the metal form and the solid plastic.

Various embodiments relate to plastic-metal junctions and methods of making the same via laser-assisted joining. The present invention provides a method of forming a junction between a metal form and a solid plastic. The method can include laser treating a surface of a metal form to generate a feature (e.g., a plurality of at least one of pores and grooves) in the surface of the metal, wherein the laser has an angle of incidence with the surface of the metal of other than 0 degrees. The method can include contacting the metal surface including the feature with a flowable resin composition. The method can include curing the flowable resin composition to form the solid plastic, to provide the junction between the metal form and the solid plastic.

Disclosed is a method of making an article, the method comprising: melt extruding a plurality of layers comprising one or more polymer compositions in a preset pattern, wherein the extruded layers comprise one or more first layers comprising a first polymer composition A, and one or more second layers comprising a second polymer composition B having a chemical composition different from the first polymer composition A, having a glass transition temperature (Tg) that is 5-100 degrees C. lower than polymer composition A, and which acts as a adhesion promotion layer between two layers comprising first polymer composition A; and fusing the plurality of layers to provide the article.

A stator unit includes an A-phase yoke, a B-phase yoke, a first resin portion, and a second resin portion. The A-phase yoke and the B-phase yoke include pole teeth. The first resin portion includes an A-phase yoke filling part in an inner space of the A-phase yoke and a B-phase yoke filling part in an inner space of the B-phase yoke. The second resin portion includes a sealing part between the pole teeth. An A-phase bobbin separates the A-phase yoke filling part from the sealing part. A B-phase bobbin separates the B-phase yoke filling part from the sealing part.

A ultrasonic welding method of joining dissimilar-material workpieces, such as sheet materials, and the joined components formed thereby. The method includes applying ultrasonic energy to a thermoplastic piece to fill a hole of a dissimilar piece to form a weld point that is made up with polymer from the thermoplastic piece. In general, the geometry of the thermoplastic piece is not altered during the process. The dissimilar piece generally has a higher melting temperate and can be metal, thermoset polymers, or other thermoplastic material. The welded pieces can be arranged in a lap, laminate, or double lap configuration. In some embodiments, the hole of the dissimilar sheet material includes undercut features that improve the mechanical interlock between the dissimilar pieces. In some embodiments, the weld point has a mushroom cap to improve mechanical interlock.

A ultrasonic welding method of joining dissimilar-material workpieces, such as sheet materials, and the joined components formed thereby. The method includes applying ultrasonic energy to a thermoplastic piece to fill a hole of a dissimilar piece to form a weld point that is made up with polymer from the thermoplastic piece. In general, the geometry of the thermoplastic piece is not altered during the process. The dissimilar piece generally has a higher melting temperate and can be metal, thermoset polymers, or other thermoplastic material. The welded pieces can be arranged in a lap, laminate, or double lap configuration. In some embodiments, the hole of the dissimilar sheet material includes undercut features that improve the mechanical interlock between the dissimilar pieces. In some embodiments, the weld point has a mushroom cap to improve mechanical interlock.

The problem to be solved by the present invention is to provide an adhesive multilayer sheet including an adhesive layer that includes an acid-modified polyolefin and a substrate layer that includes a polyphenylene ether, and having high interlayer peel strength. The multilayer sheet of the present invention includes: a substrate layer (A) that includes a polyphenylene ether; and an adhesive layer (B) that includes an acid-modified polyolefin, in which the multilayer sheet further includes, between the substrate layer (A) and the adhesive layer (B), a tie layer (C) that includes a polyolefin/polyphenylene ether-based alloy.

There is provided a light curing molding ink set used for a manufacturing method for light curing molding using an ink-jet scheme, comprising a combination of a resin composition for a modeling material used for shaping the modeling material and a resin composition for a supporting material used for shaping the supporting material, wherein surface tension Mt (mN/m) of the resin composition for a modeling material is greater than surface tension St (mN/m) of the resin composition for a supporting material, and the surface tension Mt and the surface tension St satisfy the [0<MtSt<5] expression, and this light curing molding ink set can afford a light cured article having the good dimensional accuracy.