Hand-held type communication device front casing manufacturing method

Abstract

The invention discloses a hand-held communication device front casing manufacturing method. The steps are that: at least a patterned film is disposed into a first female mould; plastic is poured into a first male mould and the first female mould and then the plastic is jetted to be molded into an embryo which is firmly combined with the film to form a window glass; the first male mould and a second male mould are rotated and replaced after the moulds are opened so as to make the window glass move with the first male mould; another film is disposed in the first female mould and at the same time the mould is closed so that the plastic can be poured into the moulds; the plastic is jetted and forms a first front casing in the first male mould and the first female mould, and another window glass is formed in the second male mould and the first female mould, then the front casing is taken out. Compared with prior art, the method is dispensed with the making process of the back-adhesive area and the adhibitting process. With the invention, the thickness of the whole body can be reduced and the assemblage can be simplified.

Description

Technical field: [0001] The invention relates to a method for manufacturing a front shell of a hand-held communication device, in particular to a manufacturing process utilizing a combination of film in-membrane molding technology and double-material injection molding technology. Background technique: [0002] Generally speaking, a handheld communication device such as a mobile phone includes a front case with a window lens and a casing. The window lens is made by In-Mold Film (IMF), which prints the desired pattern on the surface of the plastic film by ink printing, and after high-pressure forming, the film with the pattern is cut into pieces. desired form factor. The patterned film is placed into the injection mold manually or mechanically, and the plastic is closely combined with the patterned film after injection, and the finished product is taken out. [0003] The shell can be made by single-material injection molding technology or double-material injection molding te...

AI Technical Summary

Problems solved by technology

[0009] As shown in Figure 2, the above-mentioned finished product, that is, the window lens 30 and the housing 24 are integrated with an adhesive strip 31, but this combination requires extra plastic as an attachment area, and cannot reduce the overall thickness.

Furthermore, the molding method of the window lens 30 and the casing 24 must be achieved by two injection molding machines and two sets of molds. It can be seen that the two molding machines and the adhesive method will bring additional cost and time, and must plus consideration

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