JPS5835494Y2 - film jacket - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a film jacket.

Conventionally, the film is, for example, 105X14&+a++
Microfiche films of various sizes are stored in transparent jackets to prevent scratches and dirt, but no measures are taken to prevent the film from curling or to ensure suitability for use with automatic search machines. However, it was not always sufficient for these purposes.

The present invention aims to solve these drawbacks, and its structure is to provide a film jacket using two types of transparent synthetic resin sheets with different thicknesses.

Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a film jacket according to the present invention, and FIG. 2 is a diagram showing the jacket of FIG. 1 divided into upper and lower sheets.

Reference numeral 1 denotes a film jacket, which consists of two rectangular transparent synthetic resin sheets 2 and 3 as shown in FIG.

The jacket size should be as close as possible to the film size to be stored, and the side AB of this sheet.

The BC and CD are bonded together by ultrasonic cutting, and the edges of the cut sides are hardened.

A notch 4 is provided on the side DA that is not bonded to facilitate the insertion and removal of the film into the jacket formed by the bonding.
are provided in the same way on the upper and lower sheets 2 and 3.

1JFL 5 , 5 is drilled near AB of at least one of sheet 2 or sheet 3 (the figure shows the case where the hole is drilled in sheet 2), and this J'JL 5 , 5 is passed through and attached to the jacket and film using adhesive tape 6.6. Prevent misalignment.

Note that the small holes 5, 5 may be one, and the part of the stored film that does not have a photographed image, for example, in the case of Eva microfiche film, does not have a photographed image 8, 8, etc. It is preferable to provide it in the title section 9.

Another important feature of the present invention is that the sheets 2 and 3 are formed of sheets having different thicknesses.

This is because by inserting the film with the emulsion layer side facing the thicker sheet surface, it is possible to prevent the jacket itself from curling.

As an example of the thickness of the transparent synthetic resin sheet, one having a thickness of about 100 μm on the emulsion side and about 50 μm on the base side is used.

By using sheets with different thicknesses and in addition, by hardening the edges on each side by fusing, it is possible to prevent the jacket from curling, which is suitable for automatic search. As a result, even a sheet with a thinner base thickness can be made rigid, and any sheet-like film (including thin jackets) can be used for automatic retrieval, which is a great practical effect.

[Brief explanation of the drawing]

Figure 1 shows a perspective view of a film jacket according to the present invention, and Figure 2 shows a state in which the upper and lower sheets of the jacket are divided into two. 1...Film jacket), 2.3...Transparent sheet 4...Notch, 5,5.../NL, 7...Film.

Claims (1)

[Scope of utility model registration request] Two types of transparent synthetic resin sheets with different thicknesses are cut to approximately the same size as the film, and at least one side of the synthetic resin sheet is left intact, and the other is cut into a film jacket that stores a rectangular film that has been processed. A small hole is provided near at least one side of the two synthetic resin sheets, and the film housed in the sheet is fixed with an adhesive tape through the small hole. Film jacket.