Systems and methods of a container having a tack welded fin seal. The container may include a film, a tack weld joining a first outer portion of a first edge and a second outer portion of the first edge, and a fin seal joining a first inner portion of the first edge of the film and a second inner portion of a second edge of the film. The container may include a faceplate integrally molded to an outer layer of a first end portion of the film. The faceplate may include substantially the same composition as an outer layer of the first end portion, such that no distinct layers are formed between the faceplate and the film. The tack weld may be formed at a tack welding system, and the fin seal may be formed at a fin sealing system having a mandrel.

A method for assembling a sheet (40) and an iron-based metal part (80) comprising a step of fitting a tubular pin (10) which is open at both ends by punching through the sheet (40) with a shank of the pin with the pin being retained (10) by the sheet, wherein a pad is detached from the first sheet (40), and a flange of the pin abuts against the surface of the sheet (40) once the through-punching has been carried out, and the elastic returns of the shank of the pin (10) and the sheet (40) compress the outer surface of the shank, or by overmoulding the pin in the sheet, and subsequently a step of welding a metal tube of the pin (10) to the iron-based metal part (80) by bringing a flee end (24) of the metal tube into contact with the surface of the iron-based metal part (80) by means of electric resistance welding (90).

A method for joining dissimilar materials includes forming a first recess and a second recess by irradiating a surface of a first member with laser light, the first recess and the second recess being cut into the surface obliquely at angles different from each other, and joining the second member to the surface of the first member with a part of the second member engaging with each of the first recess and the second recess by melting the part of the second member lower in melting point than the first member to cause the part of the second member to flow into each of the first recess and the second recess and solidifying the part of the second member.

A method for joining dissimilar materials includes forming a first recess and a second recess by irradiating a surface of a first member with laser light, the first recess and the second recess being cut into the surface obliquely at angles different from each other, and joining the second member to the surface of the first member with a part of the second member engaging with each of the first recess and the second recess by melting the part of the second member lower in melting point than the first member to cause the part of the second member to flow into each of the first recess and the second recess and solidifying the part of the second member.

A closed socket brazed joint assembly includes a first member, a second member with a first end having first and second faying surfaces, a socket in the first member that receives the second member with a faying surface with at least two portions separated by a first fillet. Before application of energy to the joint, there is a gap between the faying surfaces of the first and second members. A slug of brazing fill material is between the first end of the second member and at least one faying surface of the socket. Upon application of energy, the brazing fill material melts and flows from between first end of the second member and the at least one faying surface of the socket to fill the gap between the faying surfaces of the first and second members.

A closed socket brazed joint assembly includes a first member, a second member with a first end having first and second faying surfaces, a socket in the first member that receives the second member with a faying surface with at least two portions separated by a first fillet. Before application of energy to the joint, there is a gap between the faying surfaces of the first and second members. A slug of brazing fill material is between the first end of the second member and at least one faying surface of the socket. Upon application of energy, the brazing fill material melts and flows from between first end of the second member and the at least one faying surface of the socket to fill the gap between the faying surfaces of the first and second members.

A welding structure capable of rotational movement and a welding method for the same are introduced. The welding structure capable of rotational movement includes a seat member and a rotational movement member. The seat member has a welding portion. The rotational movement member is movably fitted to the seat member. The rotational movement member has a pressing portion for welding the welding portion to an object; thus, the rotational movement member undergoes rotational movement while the pressing portion is pressing against a pressed object, thereby causing displacement of the object. Therefore, the welding structure capable of rotational movement and the welding method for the same exhibit enhancement of ease of use, labor saving, and convenience.

A welding structure capable of rotational movement and a welding method for the same are introduced. The welding structure capable of rotational movement includes a seat member and a rotational movement member. The seat member has a welding portion. The rotational movement member is movably fitted to the seat member. The rotational movement member has a pressing portion for welding the welding portion to an object; thus, the rotational movement member undergoes rotational movement while the pressing portion is pressing against a pressed object, thereby causing displacement of the object. Therefore, the welding structure capable of rotational movement and the welding method for the same exhibit enhancement of ease of use, labor saving, and convenience.

A different-material fastener fastens together a first member and a second member formed from a material different from a material of the first member. The different-material fastener includes a rivet and a stud. The rivet includes a shank configured to be pressed into the first member, and a first head disposed at one end of the shank. The first head has a diameter larger than a diameter of the shank. The stud includes a shaft protruding from a center of an upper surface of the first head, and a second head that is disposed at an end of the shaft. The second head has a diameter larger than a diameter of the shaft and smaller than the diameter of the first head.

A different-material fastener fastens together a first member and a second member formed from a material different from a material of the first member. The different-material fastener includes a rivet and a stud. The rivet includes a shank configured to be pressed into the first member, and a first head disposed at one end of the shank. The first head has a diameter larger than a diameter of the shank. The stud includes a shaft protruding from a center of an upper surface of the first head, and a second head that is disposed at an end of the shaft. The second head has a diameter larger than a diameter of the shaft and smaller than the diameter of the first head.