JPH0246399B2 - SASHIKOMIFUAIRU - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present application relates to an insertion file configured to store paper sheets such as documents and to allow the contents of the paper sheets to be seen through the surface.

Conventional technology and its problems Conventionally, a base sheet made of opaque synthetic resin is folded in half and a top sheet made of transparent synthetic resin is inserted, and the upper and lower edges are welded together, or the base sheet is made of transparent synthetic resin. It is inserted into a flat cylindrical surface sheet made of a resin sheet, and their outer edges are welded to each other, so that it is placed on both sides of the base sheet.
A one-page-sized single-winged storage sheet or two that forms a bag-shaped part with an opening on the inside for storing paper sheets such as documents.
A plurality of page-sized double wing storage sheets are superimposed on the inner surface of a synthetic resin file cover, and in the former case, the binding part of the base sheet extending from the bag-like part is attached, and in the latter case, the binding part of the base sheet is attached to the central binding part of the base sheet. An insert file, which is formed by integrally welding the back of the file cover to the spine of the file cover, is well known and widely used.

However, according to this type of insertion file, the base sheet and the top sheet are both very thin sheets, and the base sheet and the top sheet are in a closely polymerized state. When the opening edge is opened to store paper such as paper sheets, as shown in FIG. As a result, the upper edge of the base sheet a may be damaged due to long-term use or large opening operations.
In a configuration in which the upper (lower) edges of the top sheet b and the top sheet b are welded together, there is a risk that the welded portion may be damaged.

OBJECTS, EMBODIMENTS, AND EFFECTS OF THE INVENTION The present application aims to improve the above-mentioned conventional defects, and embodiments thereof will be described in detail below with reference to the drawings. Figures 1 and 2 show the case of a 2-page-sized double-wing storage sheet, and 1 indicates a base sheet 2 made of an opaque synthetic resin sheet that is equivalent to 2-page size.
The left and right wings are made of two transparent synthetic resin sheets.
By inserting it into a folded topsheet or into a flat cylindrical topsheet 3 and welding their upper and lower edges together or their outer edges together, a bag-like shape that opens on the inside is formed on both sides of the base sheet 1. Part 4
This storage sheet is formed by forming left and right bag-like portions 4, which face each other on both wings of this storage sheet 1, respectively.
At least one of the upper and lower edges of the base sheet 3 in the intermediate binding portion of 4, preferably the upper and lower edges, is provided with a U-shaped, trapezoidal, etc. notch recess 6, and the storage sheet 1 configured in this manner is Similarly, the file cover 7 is made of synthetic resin and is slightly larger than that.
A plurality of sheets are superimposed on the inner surface of the storage sheet 1, and in this state, the central binding portion 5 of the storage sheet 1 is integrally welded 8 to the back portion of the file cover 7.

Note that FIG. 3 shows an insert file when a one-page-sized single-wing storage sheet 1' is used.

When the opening edge of the bag-shaped portion 4 is opened in order to store paper such as documents, the upper (lower) edge of the base sheet 1 and the upper edge of the top sheet 1 are exposed, as shown in FIG. without applying unreasonable tensile force to the part.
It is easily bent from the side edge of the notched recess 6, and the mouth edge of the bag-shaped portion opens wide.

Effects of the Invention As described above, according to the present application, when the bag-shaped portion is opened, the upper (lower) edge of the base sheet is easily bent by the notch recess, and the upper (lower) edge of the base sheet is
There is no risk of excessive tensile force being applied to the edges and the upper (lower) edge of the top sheet, and therefore there is no risk of damage, and the opening operation of the bag-shaped portion can be easily performed.
Moreover, since the opening of the bag-shaped portion is wide open, it is convenient for putting in and taking out paper sheets such as documents.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIGS. 1 and 3 are plan views of the opened book, FIG. 2 is a partially cutaway plan view of the storage sheet, and FIG. 4 is a partially enlarged plan view of the storage sheet in use. 5 is a plan view of a conventional structure corresponding to FIG. 4. In the figure, 1 and 1' are storage sheets, 2 is a base sheet,
3 is a top sheet, 4 is a bag-shaped portion, 5 is a binding portion, 6 is a notched recessed portion, 7 is a file cover, and 8 is a welded portion.

Claims (1)

[Claims] 1. On both sides of a base sheet made of an opaque synthetic resin, pouch-like portions that open on the inside are formed using a top sheet made of a transparent synthetic resin, and a pouch-like portion that opens on the inside is formed. A storage sheet is formed by providing a notched recess in at least one of the upper and lower edges of the binding portion of the extended base sheet, and a plurality of these storage sheets are superposed on the inner surface of a synthetic resin file cover to form a storage sheet. An insert file characterized in that a binding portion of the file is integrally welded to the file cover. 2. The insertion file according to claim 1, which is composed of a two-page-sized wing storage sheet, and has a cutout recess extending over both wings.