JPH04125144A - Plastic card having small noble metal lump embedded therein - Google Patents

Abstract

PURPOSE:To prevent the remaining of air between both surfaces of a small noble metal lump and a sheet by forming the small noble metal lump into a frameless shape having the flat surface and back. CONSTITUTION:A character 7 is printed on the surface of a polyvinyl chloride plate 1 and a hole 2 is opened to the plate 1 so as to leave the edges from the end surfaces A, B of the PVC plate 1 and an edgeless small flat gold lump 3' is inserted in the hole 2 and a honogram 8 having a quality guarantee mark printed thereon is bonded to the PVC plate 1 so as to leave edges from the end surfaces B, C of the PVC plate 1 and transparent biphenyl chloride sheets having the same size are bonded to both surface and back of the PVC plate 1 under heating and pressure to seal the small noble metal lump to obtain a plastic card 5' having the small noble metal lump 3' embedded therein. By this method, no air is interposed between the small noble metal lump and the transparent plastic sheets on both surface and back of the plastic card.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a method for embedding small precious metal ingots that can be easily used as souvenirs or gifts, have decorative value, and are convertible into cash. It's about plastic cards.

(Prior art) A conventional plastic card with precious metal nodules embedded therein is made by punching a hole 2 in a plastic plate I such as a vinyl chloride plate, embedding a precious metal nodule 3 in the hole 2, as shown in FIG.
A transparent plastic sheet 4 made of vinyl chloride polyethylene, biphenyl chloride, etc. is bonded to the front and back surfaces by thermocompression.

(Problem to be Solved by the Invention) By the way, the plastic card 5 configured as described above has frames 6 around both sides of the precious metal lump 3, as shown in the enlarged sectional view of FIG. There was a problem in that air remained in a small gap between both sides of the small lump 3 and the sheet 4, and as a result, the precious metal small lump could not be seen clearly.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a plastic card in which no gap is created between both sides of the precious metal lump and the sheet, and no air remains.

(Means for Solving the Problems) The present invention to solve the above problems provides a plastic card in which precious metal ingots are embedded in holes made in a plastic plate, and transparent plastic sheets are thermocompression bonded to both the front and back sides. It is characterized by the shape of the precious metal nugget being flat on both the front and back without a frame.

(Function) As described above, in the plastic card of the present invention, the shape of the embedded precious metal lump is flat on both the front and back sides without a frame, so there is no gap between the sheets on both sides, and therefore air remains. The precious metal nodules are clearly visible.

(Example) An example of a plastic card embedded with precious metal ingots of the present invention will be described with reference to the drawings. As shown in Figure 1a (
Print the letter 7 on the surface of a polyvinyl chloride (hereinafter abbreviated as PVC) board L with a width of 54 mm, a length of 85.5 mm, and a thickness of 1 mm, leaving a 5 mm edge from end faces A and B, and a width of 9 mm. A hole 2 with a length of 14 mm is drilled, and a flat gold bullion 3' weighing 1 g with a width of 9+ nm and a length of 14 mm with a thickness of 1 mm is inserted into the hole 2 as shown in Fig. 1 C.
As shown in Figure 1d, embed the hologram 8 with a quality assurance mark of 15mm wide and 20mm long, leaving an edge of 5mm from the end face B and end face C, as shown in Figure 1d,
As shown in FIG.
′ was obtained.

In the plastic card 5' of the example made in this manner, the shape of the embedded precious metal lump 3' is flat on both the front and back sides without a frame, so that the space between the sheet 4 on both the front and back sides of the PVC board is No gaps are formed between the two, so no air remains, and the precious metal lump 3' is clearly visible.

(Effects of the Invention) As described above, in the plastic card in which the precious metal lumps of the present invention are embedded, air does not intervene between the precious metal lumps and the transparent plastic sheets on both the front and back sides of the plastic card, so the precious metal lumps are clearly visible. This improves the sense of luxury and decorative beauty.

[Brief explanation of the drawing]

Claims (1)

[Claims] 1) In a plastic card in which a small precious metal block is embedded in a hole drilled in a plastic plate and a transparent plastic sheet is heat-pressed on both the front and back sides, the shape of the small precious metal block is flat on both the front and back without a frame. A plastic card with embedded precious metal nuggets.