Abstract: [Problem] To provide a heat spreader capable of removing heat from an element more efficiently and immediately than an existing one, and also capable of satisfactorily responding to further enhancement in performance and output of various apparatuses, and a method for efficiently manufacturing the same. [Solution] A heat spreader includes a Cu—Mo layer made of a Cu—Mo composite material and having an average thickness of less than or equal to 0.6 mm and a variation in thickness of less than or equal to 0.1 mm, and a Cu layer directly stacked on each of both surfaces thereof. A method for manufacturing the heat spreader includes planarizing a plate material of the Cu—Mo composite material constituting the Cu—Mo layer, and roll-bonding a Cu plate constituting the Cu layer to each of both surfaces thereof.

Abstract: [Problem] To provide a heat spreader capable of removing heat from an element more efficiently and immediately than an existing one, and also capable of satisfactorily responding to further enhancement in performance and output of various apparatuses, and a method for efficiently manufacturing the same. [Solution] A heat spreader includes a Cu—Mo layer made of a Cu—Mo composite material and having an average thickness of less than or equal to 0.6 mm and a variation in thickness of less than or equal to 0.1 mm, and a Cu layer directly stacked on each of both surfaces thereof. A method for manufacturing the heat spreader includes planarizing a plate material of the Cu—Mo composite material constituting the Cu—Mo layer, and roll-bonding a Cu plate constituting the Cu layer to each of both surfaces thereof.

Abstract: A method of melt-adhering together a member (A) having a layer (a) of a thermoplastic resin exposed on at least a portion on the surface on the outer side thereof and a member (B) having a layer (b) of a thermoplastic resin exposed on at least the surface on the inner side thereof, wherein a self-press holding mechanism is formed on the portions on where the layer (a) and the layer (b) are to be melt-adhered together to press the member (A) and the member (B) onto each other and to hold the pressed state thereof, and the press-adhered portion is irradiated with a laser beam in a state where the layer (a) and the layer (b) are press-adhered together to effect the melt-adhesion. Therefore, the melt-adhesion is effected even without fixing the portions to be melt-adhered together by using an external pressing mechanism, and the container can be sealed at high speeds and stably despite the member thereof has a relatively large thickness.

Abstract: A method of making a hermetically sealed container is disclosed. In the method, a water vapor (40) is blown into a container body (1) that has been placed with a product such as solid foods or the like leaving a space portion (3). Immediately thereafter or immediately after an inert gas (51) has been blown into the container body, the container body is hermetically sealed. The container has a relatively low negative internal pressure which is controllable with a small range of variation. The water vapor (40) is generated by blowing a non-condensable gas such as air, nitrogen gas or the like at a constant flow rate into a water (13) which is controlled to a constant temperature. When the inert gas (51) is blown, only the surface and its vicinity of the product (4) is heated by blowing the water vapor (40).