JPH11102039A - X-ray film package and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray film package which does not damage an X-ray film. SOLUTION: This X-ray film package is constituted of a first sheet 2 covering one surface of the X-ray film 1, a second sheet 3 covering the other surface of the film 1 while the part of the other surface of the film 1 is uncovered, a third sheet 4 covering the sheet 3 and the remaining part of the other surface of the film 1, a path 7 formed between the sheets 3 and 4, and a fourth sheet 9 arranged between the sheet 3 and the film 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray film package for enclosing a film used for X-ray photography, and more particularly to an X-ray film package suitable for dental use.

[0002]

2. Description of the Related Art An X-ray film package is formed by enclosing an X-ray film in a bag made of a sheet of a material, for example, a synthetic resin sheet, which blocks light but transmits X-rays. One example of such an X-ray film package is disclosed in JP-A-61-1.
Japanese Patent Publication No. 56114 (Japanese Patent Publication No. 2-17095) is known.

[0003] The X-ray film package described in the above publication includes a first sheet portion covering one surface of the X-ray film,
A second sheet portion that covers a part of the other surface of the X-ray film while leaving a part thereof, a third sheet portion that covers the second sheet portion and the remaining portion of the other surface of the X-ray film, And a passage formed between the third sheet portion and the third sheet portion. The X-ray film is inserted between the second sheet portion and the first sheet portion, and when the developer is injected from the passage, the developer reaches the remaining portion of the X-ray film and the second sheet portion and the X-ray The X-ray film is developed.

[0004]

In the X-ray film package described in the above-mentioned publication, if the second sheet portion has a mark formed in the passage, the mark may hit the X-ray film and damage the X-ray film. is there. Further, the second sheet portion covers the X-ray film except for a part of the other surface of the X-ray film, and therefore, since the end of the second sheet portion is in contact with the X-ray film, the end is There is a possibility that the X-ray film may be damaged.

[0005] The present invention has been made in view of the above points, and it is an object of the present invention to provide an X-ray film package having the above-mentioned structure, which does not damage the X-ray film.

[0006]

According to the present invention, a fourth sheet portion is provided between the second sheet portion and the X-ray film.

By providing the fourth sheet portion, welding marks and edges of the second sheet portion do not directly hit the X-ray film, so that the X-ray film is not damaged.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an example of an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II of FIG.

In FIG. 1, reference numeral 1 denotes a dental X-ray film (hereinafter, simply referred to as a film), and reference numeral 2 denotes a first sheet having an edge slightly larger than the edge of the film 1 and covering the lower surface of the film 1. Reference numeral 3 denotes a second sheet which covers the remaining portion of the upper surface of the film 1 except for the remaining portion 1b near the right end of the film 1, and its vertical dimension shown in FIG. Is almost the same as 4 is a third sheet covering the second sheet and the remaining portion 1b of the film 1,
The vertical dimension shown in FIG. 1 is substantially the same as that of the first sheet 2. The left edge 4d of the third sheet 4 in the figure is the edge 2d of the first sheet 2 and the edge 3d of the second sheet 3.
Slightly shorter than d.

[0010] A fourth sheet 9 is arranged between the second sheet 3 and the film 1. The end 9a of the fourth sheet 9 protrudes rightward in the figure from the end 3a of the second sheet 3, but is shorter than the leading end 1a of the film 1. Thus, the fourth sheet 9 is also interposed between the end 3a of the second sheet 3 and the film 1.

The fourth sheet 9 is made of, for example, a polyethylene sheet, but may be made of any other material as long as it is as thin as possible and does not damage the film 1.

The edge 2a of the first sheet 2 and the edge 4a of the third sheet 4 are joined (welded in this embodiment), and similarly, the edges 2b, 2c, Edges 3b, 3c of second sheet 3, edge 9 of fourth sheet 9
b, 9c (no edges appear in the figure), 3rd
The edges 4b and 4c of the sheet 4 are welded. Further, the edge 2d of the first sheet 2, the edge 3d of the second sheet 3, and the edge 9d of the fourth sheet 9 are welded.

In FIG. 1, reference numerals 5 and 6 denote a first welding portion for welding the second sheet 3 and the third sheet, and a second welding portion for welding the third sheet.
It is a welded part. The first welded portion 5 extends from near the corner of the edge 4d of the third sheet 4 to the lower edges 2c, 3 of each sheet.
c and 4c, a fold line 5a extending obliquely toward the direction of c and 4c, and a fold line 5 that is continuous with the slop line 5a and is folded upward near the remaining portion 1b of the film 1 to reach the edge 4b.
b. Also, the second welded portion 6 is
And an inclined line 6a substantially parallel to the inclined line 5a of the welded portion 5;
1 and a folding line 6b which is folded downward in FIG. 1 to reach the edge 4c. Incline 5a, 6
a, the second sheet 3 and the third sheet 4 are welded along the folding lines 5b and 6b.

In FIG. 1, reference numeral 7 denotes a passage formed between the inclined line 5a and the inclined line 5b, and reference numeral 8 denotes an open portion in which the passage 7 is terminated by folding back the folding lines 5b and 6b. As described above, the formation of the first welded portion 5 and the second welded portion 6 allows the film 1 to communicate with the outside only by the passage 7, and the passage 7 is connected to the third sheet 4. And the second
The sheet 1 is closed by the close contact of the sheet 3, so that the film 1 is sealed by the first, second, and third sheets 2, 3, and 4.

Using this dental X-ray film package, X
The development processing after performing the radiography is performed as follows. That is, the developer is injected into the syringe, and the injection needle is passed through the passage 7.
Insert At this time, the edge 4d of the third sheet 4 is
Of the sheet 3 is shorter than the edge 3d of the sheet 3, so that the entrance of the passage 7 is also clear, and the insertion of the injection needle is made extremely easy. When the developer is released when the tip of the needle reaches the opening 8, the developer is discharged from the remaining portion 1 b of the film 1 to the fourth portion.
Between the sheet 9 and the film 1, thereby performing development. Injection of the fixer is performed in the same way,
After the development processing, the film 1 can be easily taken out by peeling off the third sheet 4.

As described above, since the fourth sheet 9 is interposed between the second sheet 3 and the film 1, even if the second sheet 3 has a trace of the passage 7 formed thereon, The film 1 cannot be damaged. Further, it is possible to prevent the end 3a of the second sheet 3 from damaging the film 1. Further, conventionally, in order to prevent the film 1 from being damaged by the end 3a of the second sheet 3, a heat treatment is performed on the end 3a to remove the corner thereof. The provision of 9 also eliminates such processing.

Next, a method for manufacturing the film package will be described with reference to FIG. Here, a method of manufacturing a five-packed body will be described. In FIG. 3, 20, 30, 4
0, 90 are the sheets 2, 3, in FIGS.
This is a five-sheet sheet in which four sheets of Nos. 4 and 9 are made continuous. The dashed line shown in FIG. 3 indicates a welding position.

First, the second sheet 30 is extended, and the second sheet 30 and the third sheet 40 are welded to form the passage 7. Next, the welded second and third sheets 30, 40,
The fourth sheet 90 and the first sheet 20 are overlapped and welded to form a U-shaped package. The welded portions at this time are, as shown in the example of the third sheet 4 in FIG.
b, 4c. The remaining edge 3d is left open without welding. A cut is made in a welded portion which is a boundary between adjacent packages, and the welded portion can be separated from the cut portion.

Next, in a dark room, the film 1 is inserted from the edge of the package which has not yet been welded (3d in FIG. 1).
After inserting one film 1, the edges are welded. Finally, the five packages are cut off one by one.

In this manner, the fourth sheet 90 can be easily interposed between the second sheet 30 and the first sheet 20. At this time, if the fourth sheet 90 is made longer than the first sheet 20 at the insertion opening of the film 1, the film 1 can be very easily inserted by inserting the film 1 using the fourth sheet 90 as a guide. You can insert it.

In the above description, a dental X-ray film package is described as an example. However, the present invention is not limited to dental use, and can be applied to X-ray film packages for other uses. Further, each sheet portion may be a continuous integrated sheet instead of a separate body. The method of joining each sheet also includes adhesive bonding, heat welding, ultrasonic welding,
Any other method may be used.

Further, in the above example, the example in which the fourth sheet portion is joined or welded to another sheet portion has been described.
The fourth sheet portion does not necessarily need to be joined or welded to another sheet portion, in short, it only has to be interposed between the second sheet portion and the X-ray film.

[0023]

As described above, according to the present invention,
Since the fourth sheet is interposed between the second sheet and the X-ray film, the effect of preventing the X-ray film from being damaged can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is an exploded view for explaining a method of manufacturing the X-ray film package.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 X-ray film 2 1st sheet 3 2nd sheet 4 3rd sheet 7 Passage 9 4th sheet

Claims (2)

[Claims] 1. A first sheet portion covering one surface of an X-ray film, a second sheet portion covering a part of the other surface of the X-ray film while leaving a part thereof, and a second sheet portion and an X-ray. A third sheet portion covering the remaining portion of the other surface of the film, a passage formed between the second sheet and the third sheet, and a portion disposed between the second sheet portion and the X-ray film. An X-ray film package comprising: a fourth sheet portion. 2. A first sheet portion covering one surface of the X-ray film, a second sheet portion covering a part of the other surface of the X-ray film while leaving a part thereof, and a second sheet portion and the X-ray. A third sheet portion covering the remaining portion of the other surface of the film; and a fourth sheet portion disposed between the second sheet portion and the X-ray film, wherein the second sheet portion and the third sheet portion are provided. To form a passage, and join the joined second sheet and third sheet together with the first sheet and one edge with the fourth sheet section interposed therebetween. And from the one edge, the fourth
Characterized in that an X-ray film is inserted between the first sheet part and the sheet part, and then the one edge is joined.
Manufacturing method of wire film package.