A method of manufacturing a fuel tank includes: passing a hollow molten resin projection, that projects-out in a wall-thickness direction and is formed at a molten resin sheet that becomes a tank structural member structuring a tank main body, through a mounting hole of a part-to-be-mounted that is placed on the molten resin sheet; and pressurizing the molten resin projection from an inner side, and causing at least a portion of the molten resin projection to jut-out to a peripheral portion of the mounting hole of the part-to-be-mounted.

A method for improving tear resistance of stretch films in which two stretch films are bonded together with an adhesive by hot rolling or UV curing such that their primary stretch directions cross each other. Composite films resulting from the invention possess significantly improved slit tear strength and tear resistance over biaxially stretched films with the same thicknesses. The invention can be widely used to improve tear resistance of stretch films fabricated from various existing materials and processes. In addition, it allows simple operations and is readily applicable to mass production.

A method for manufacturing an electronic device casing having a coupling structure is provided. The electronic device casing is made of a casing material including a supportive substrate and a first thermoplastic substrate. A preliminary connecting section is formed on the first thermoplastic substrate by a hot-pressing molding process, and a molding plastic material is injected onto the preliminary connecting section by an in-mold injection process. After being cooled, the molding plastic material engages with the preliminary connecting section to form a secondary connecting section for a coupling element to couple with. Thus, the coupling structure of the electronic device casing can be directly formed during a manufacturing process without any additional procedures, thereby overall manufacturing time and costs are reduced.

A method for manufacturing an electronic device casing having a coupling structure is provided. The electronic device casing is made of a casing material including a supportive substrate and a first thermoplastic substrate. A preliminary connecting section is formed on the first thermoplastic substrate by a hot-pressing molding process, and a molding plastic material is injected onto the preliminary connecting section by an in-mold injection process. After being cooled, the molding plastic material engages with the preliminary connecting section to form a secondary connecting section for a coupling element to couple with. Thus, the coupling structure of the electronic device casing can be directly formed during a manufacturing process without any additional procedures, thereby overall manufacturing time and costs are reduced.

The invention relates to the production of a composite material of a lobed structure (10) of a flow mixer which comprises a portion having a plurality of lobes (17, 19). For this purpose, a fibrous preform containing a resin will be produced in a simple geometric configuration of developable revolution. This is an intermediate state. By exploiting the thermoformable or thermosetting nature of the resin, the geometry of this intermediate preform is modified to deform it with limited offsets towards the final geometry.

The invention relates to the production of a composite material of a lobed structure (10) of a flow mixer which comprises a portion having a plurality of lobes (17, 19). For this purpose, a fibrous preform containing a resin will be produced in a simple geometric configuration of developable revolution. This is an intermediate state. By exploiting the thermoformable or thermosetting nature of the resin, the geometry of this intermediate preform is modified to deform it with limited offsets towards the final geometry.

A method for thermoforming an article includes extruding a sheet of material, conditioning the sheet with a roller, thermoforming the sheet to provide a web, and cutting the web to provide the article.

A method for thermoforming an article includes extruding a sheet of material, conditioning the sheet with a roller, thermoforming the sheet to provide a web, and cutting the web to provide the article.

A process produces an electrical line which extends in the longitudinal direction and the line has a line core and an outer shell. In a continuous shaping process, individual shell portions of the outer shell are formed successively by surrounding the line core with a curable plastic substance. In at least one portion, the outer shell is produced having a cross-sectional geometry which can be varied in the longitudinal direction of the line.

A process produces an electrical line which extends in the longitudinal direction and the line has a line core and an outer shell. In a continuous shaping process, individual shell portions of the outer shell are formed successively by surrounding the line core with a curable plastic substance. In at least one portion, the outer shell is produced having a cross-sectional geometry which can be varied in the longitudinal direction of the line.