Abstract: A housing includes a first base layer and a second base layer integrally combining with the first base layer. The first base layer is formed by a first injection mold, the first base layer has a first combining surface arranged with ribs. The second base layer combines with the first base layer to form the housing with a second injection mold. The second base layer has a second combining surface combining with the first combining surface. The second combining surface defines recesses to correspondingly receive the ribs.

Abstract: A housing comprises a substrate and a decorative film. The decorative film comprises a transparent film, a metallic coating, a transparent varnish layer, a color layer, a protective layer and an adhesive layer. The metallic coating is formed on an inner surface of the transparent film. The varnish layer is formed on the metallic coating. The color layer is formed on the varnish layer. The protective layer is formed on the color layer. The adhesive layer is formed on the protective layer. The substrate is integrally molded with the decorative film bonding the adhesive layer.

Abstract: A housing includes a first base layer and a second base layer integrally combining with the first base layer. The first base layer is formed by a first injection mold, the first base layer has a first combining surface arranged with ribs. The second base layer combines with the first base layer to form the housing with a second injection mold. The second base layer has a second combining surface combining with the first combining surface. The second combining surface defines recesses to correspondingly receive the ribs.

Abstract: A pre-forming method for a film includes: providing a pressing mold including a lower mold and an upper mold, the lower mold defining a cavity; placing a film into the cavity, the film having patterns printed thereon; providing a heating device including a heating unit and a fixing unit, the heating unit heating and the fixing unit pressing the area of the film having the pattern, the film being softened; removing the heating device form the pressing mold and the pressing mold being closed, the film being heated further to soft; cooling and opening the pressing mold, removing the three-dimensionally shaped film from the mold without distorting the pattern.