JPH0237573Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Purpose of the invention (industrial field of application) This invention relates to a transparent or translucent synthetic resin storage bag for storing and organizing negative film, etc.

(Conventional Known Technology) Technical issues regarding negative film storage bags include ease of loading and unloading the negative film and prevention of the negative film from falling off when being carried. Improvements have been made in preventing omissions among these subjects. For example, Japanese Utility Model Application Publication No. 55-96776 and Japanese Utility Model Publication No. 58-15191 have not solved the problem of ease of loading and unloading. That is, the insertion opening in the above invention is just a cut. Therefore, there is no other way than to pick up the rim of the mouth or push it open with your fingertips, which not only makes insertion not easy but also risks damaging the rim of the mouth.

(Problems to be solved by the present invention) In the present invention, the upper edges of two short and long synthetic resin sheets are bent inward to form bent pieces to widen and strengthen the mouth edge. At the same time, the above-mentioned drawbacks are to be improved by using the bent piece on one side as an inducer piece.

(b) Structure of the present invention (means for solving the problem) Of two synthetic resin sheets with the same width but with a difference in vertical length and short length, the vertically long one is used as the top sheet 1, and the vertically long one is is used as the back sheet 2, and the upper end of each sheet is folded inward to form folded pieces 3 and 4 whose edges coincide with each other in the horizontal direction. is glued or welded to form a bag shape, and a plurality of negative film storage chambers 7 are defined by gluing or welding 6 in a plurality of vertical lines at appropriate intervals from the lower end of the bent portion. .

(Function) In the present invention, as shown in the above structure, the protrusion 4' is formed at the upper end of the folded part of the back sheet 2.
When the leading end of the negative film 10 comes into contact with the projection 4' as shown by the imaginary line in FIG.
is stored in.

The negative film 10 in the storage chamber is prevented from falling off because the opening edge 5' at the lower end is narrowed by the restoring force of the bent pieces 3 and 4 forming the insertion opening 5, as shown in FIG.

When taking out the negative film, you can easily pull it out by pressing the folded piece lightly with your fingertips.

(Example) To describe an example with reference to the drawings, of two synthetic resin sheets with different vertical lengths, the shorter one is the top sheet 1, the longer one is the back sheet 2, and the upper end of each are respectively bent inward to form folded pieces 3 and 4, with the leading edge of each folded piece aligned in the horizontal direction. Therefore, a protrusion 4' is formed at the upper end of the back sheet. The above structure is polymerized and three sides except the upper edge are glued or welded to form a bag shape, and a plurality of vertical lines are glued or melted at appropriate intervals from the lower end of the fold. Then, a plurality of storage chambers 7 are formed.

In the drawing, 8 is a binding section, and 9 is a binding hole.

(c) Effect In the present invention, since the upper ends of the top sheet 1 and the back sheet 2 are bent inward, the elasticity of the top sheet 1 and back sheet 2 allows them to repel and form the opening 5 to maintain an easy-to-insert state. There is. Moreover, since a protrusion 4' is formed at the upper end of the folded piece 4, this protrusion serves as a guiding plate when inserting the negative film, making insertion very easy. Further, since the lower end edge 5' of each folded piece 3, 4 is maintained in a closed state by the restoring force of the folded piece, there is an advantage that the stored negative film is prevented from falling off.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view, Fig. 2 is an enlarged sectional view taken along the line A-A in Fig. 1, and Fig. 3 is an enlarged sectional view taken along the line B-B in Fig. 1. Figure, 4th
The figure and FIG. 5 are explanatory diagrams for use. 1...Top sheet, 2...Back sheet, 3...
Bending piece (front), 4...Bending piece (back), 4'...Protrusion, 5...Insertion opening, 6...Welding line, 7...Storage part.

Claims (1)

[Scope of utility model registration request] A vertically long back sheet and a vertically short top sheet are formed from two transparent or translucent synthetic resin sheets, the upper end of each sheet is bent inward to provide a folded piece, and the lower end of each folded piece is formed. The front and back sheets are overlapped with their edges aligned horizontally, and the three sides excluding the upper folded part are glued or welded to form a bag, and a plurality of vertical lines are formed at appropriate intervals from the lower edge of the folded part. A storage bag for negative film, etc., with multiple storage compartments formed by adhesion or welding lines.