A production method of a modeled object includes a fixing step of fixing a thermally expandable sheet onto a tray by entirely or partially fixing a periphery of the thermally expandable sheet placed on the tray by a fixing member; a thermally expanding step of thermally expanding partially the thermally expandable sheet, which is in a state of being fixed onto the tray by the fixing step, by being heated by irradiating the thermally expandable sheet with light by an irradiation unit, while moving the irradiation unit from a first position toward a second position unit; and cooling the thermally expandable sheet, which has been thermally expanded partially by the thermally expanding step, while maintaining the state in which the thermally expandable sheet is fixed onto the tray, while returning the irradiation unit from the second position to the first position.

A laser welding member that has a high laser transmittance at a welding region and exhibits an excellent laser welding processability, and a molded article obtained by laser welding using this laser welding member. The laser welding member is obtained by injection molding of a thermoplastic polyester resin material, wherein a region to be laser welded in the member is at a location separated by a distance of at least 15 mm from a gate of an injection molding mold and has at least 30% of a light transmittance of laser light with a wavelength of 940 nm.

A thermally expandable sheet includes: a first thermally expansive layer that is formed on one side of a base and contains a first thermally expandable material and a first binder, the first thermally expansive layer having a first ratio of the first thermally expandable material with respect to the first binder; and a second thermally expansive layer that is formed on the first thermally expansive layer and contains a second thermally expandable material and a second binder, the second thermally expansive layer having a second ratio of the second thermally expandable material with respect to the second binder, wherein the first ratio is lower than the second ratio.

The shape-forming packaging material is a shape-forming packaging material including a heat resistant resin layer as an outer layer, a heat fusible resin layer as an inner layer, and a metal foil layer disposed between both the layers, and is configured such that a print improving resin layer is laminated on a further outer side of the heat resistant resin layer.

Provided is a thermoplastic resin film laminate, which is obtained by ultrasonic welding of a thermoplastic resin film and a thermoplastic resin molded article, and which has high welding strength and excellent appearance with less welding marks. The above-described problem is solved by a thermoplastic resin film laminate which is obtained by bonding, by ultrasonic welding, a thermoplastic resin film having a thickness of 0.4 mm or less and a welding margin of a thermoplastic resin molded article having the welding margin and having a thickness of 0.5 mm or more, and wherein the height of the welding margin is 75-125% of the thickness of the thermoplastic resin film.

A closure device for a container comprising a cover element for closing the container, a chamber arranged on the cover element and an inner housing. The chamber has a chamber end piece having an outlet opening that can be closed by means of a closure means. The inner housing comprises opening means for opening the outlet opening, wherein the chamber can be moved relative to the inner housing from a closed position into an outlet position. The chamber and the chamber end piece are connected to each other in a fluid-tight and gas-tight manner by means of a plastic seal injection molded on chamber and chamber end piece, wherein chamber, chamber end piece and plastic seal are formed from the same plastic. The invention further relates to a method for producing a closure device or a chamber.

A closure device for a container comprising a cover element for closing the container, a chamber arranged on the cover element and an inner housing. The chamber has a chamber end piece having an outlet opening that can be closed by means of a closure means. The inner housing comprises opening means for opening the outlet opening, wherein the chamber can be moved relative to the inner housing from a closed position into an outlet position. The chamber and the chamber end piece are connected to each other in a fluid-tight and gas-tight manner by means of a plastic seal injection molded on chamber and chamber end piece, wherein chamber, chamber end piece and plastic seal are formed from the same plastic. The invention further relates to a method for producing a closure device or a chamber.