Light protecting sheet and method for manufacturing same

Disclosed are a light protecting sheet, capable of displaying an advertising subject of a real picture as an image of high resolution, which is advantageous in terms of low production cost, excellent productivity and light-proof characteristic, and a method for manufacturing the same. The light protecting sheet comprises an aluminum-deposited film, a transparent film coated onto one side of the aluminum-deposited film via a two-component adhesive, a white ink layer coated on the other side of the aluminum-deposited film, and a hot melt layer covering the white ink layer. In addition, such light protecting sheet can be manufactured by applying a two-component adhesive of white color on one side of an aluminum-deposited film, overlaying a transparent polyethylene terephthalate film on the adhesive, spreading white ink over the other side of the aluminum-deposited film, and coating a hot melt layer on the white ink layer.

DETAILED DESCRIPTION OF THE INVENTION With reference to FIG. 2 , there is shown a sectional view of a light protecting sheet according to the present invention. In the light protecting sheet, on the basis of an aluminum-deposited film 102 , an adhesive layer 101 of white color comprising a mixture of an adhesive and a pigment is applied on one side of the base film, and a white ink-applied color paint layer 103 is formed on the other side of the base film. Then, a transparent film 100 is overlaid on the adhesive layer 101 , and a hot melt layer 104 is formed on the color paint layer 103 . The transparent film 100 is made of polyethylene terephthalate, and the adhesive layer 101 shows white color by mixing the adhesive with the pigment. Such adhesive layer 101 is substituted for a conventional white PET film 10 containing fillers, and is thus advantageous in light of low production cost and improvement of productivity by improving forming workability of the sheet. On the hot melt layer 104 , an advertising subject of a real picture can be directly applied. The light protecting sheet is prepared by applying the white adhesive comprising the mixture of a two-component adhesive and a white pigment, such as titanium dioxide, aluminum hydroxide and calcium carbonate, on one side of the aluminum-deposited film 102 , overlaying the transparent polyethylene terephthalate film on the adhesive, spreading the white ink on the other side of the aluminum-deposited film 102 , and coating the hot melt layer on the white ink layer. As described above, the aluminum-deposited film of the present invention having its one side applied with a two-component adhesive of white color can be substituted for expensive white PET film, and also the transparent film can be coated on its outer surface, whereby deformation and scratching attributed to lighting heat can be prevented, and an advertising subject of a real picture can be directly applied on the hot melt layer. The present invention has been described in an illustrative manner, and it is to be understood that the terminology used is intended to be in the nature of description rather than of limitation. Many modifications and variations of the present invention are possible in light of the above teachings. Therefore, it is to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.