JPH0416079B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a file with a pocket, which is made by welding a plurality of bag sheets having pockets on both sides between a front cover and a back cover.

[Prior Art] This type of pocket file has a front cover and a back cover made of a single piece of synthetic resin, and a bag sheet with a pocket made of transparent plastic film or the like is attached to the inner surface of the spine. It is heat-welded and is used to store photos and other various items in the pocket. Files with this type of structure include top-loading type files with the pocket opening facing the top edge of the cover, and side-loading type files with the pocket openings facing each other at the center of the bag sheet. ,
Alternatively, side-insertion type devices are known in which a thick inner sheet is provided in the pocket and insertion ports are provided on both sides of the inner sheet.

[Problems to be solved by the invention] However, in the top-loading type, the central part of the bag sheet has a double structure for each bag sheet, so the joint strength after welding is insufficient, and the bag sheet becomes There is a problem that it peels off easily.

On the other hand, side-loading types have a single layer in the center for each bag sheet, so it is easier to increase the joint strength after welding compared to top-loading types, but the insertion opening is facing the same direction. Because it fits,
When inserting photos, etc., you have to insert them in opposite directions, which is inconvenient. In particular, if the center parts of multiple bag sheets are overlapped and welded to the spine of the cover in the thickness direction, for example, when the front half is opened, the part near the binding origin of the right pocket will overlap with the left pocket. It curves and protrudes above the area near the origin of the spelling. the result,
The edge of the opening in the right pocket gets in the way, making it difficult to insert photos or other items into the left pocket. Similarly, when the latter half is opened, the area near the spelling base of the left pocket will curve and protrude above the area near the spelling base of the right pocket. As a result, the edge of the opening of the left pocket becomes a hindrance, making it difficult to insert a photograph or the like into the right pocket.

In order to solve this problem, there is a side-fitting type that has a thick inner sheet in the pocket, but this method has a problem that the structure is complicated and it takes time and effort to manufacture.

The present invention aims to eliminate all such problems.

[Means for Solving the Problems] In order to achieve the above objects, the present invention employs the following configuration.

That is, the present invention is made by overlapping and welding the center portions of a plurality of bag sheets having pockets on both sides to the spine of a cover in the thickness direction, and each bag sheet has a cross section of the sheet material. It is characterized in that it is folded into an S-shape and its upper and lower edges are respectively joined.

[Function] According to the present invention, since the center portion of each bag sheet is a single layer, sufficient bonding strength can be ensured even if a plurality of these bag sheets are stacked and the center portion is welded to the spine of the cover. Furthermore, when only the cover is open, the insertion openings of each pocket face in the same direction, so items can be inserted from the same direction while turning over the pockets.

Moreover, according to such a configuration, when the first half page or the second half page of the bag sheet is opened, the part near the spelling point of the pocket may curve and protrude so as to cover the other party. too,
There is no problem in which the opening edge of the protruding side of the insertion port covers the other insertion ports and interferes with the operation of inserting photos or the like. This is because the insertion ports do not come close to each other and face each other. Therefore, it is also possible to solve the problems peculiar to bags in which the center portions of each bag sheet are polymerized and welded in the thickness direction.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, this pocket file 1 has a front cover 2 and a back cover 3 made of a single synthetic resin plate, and a spine 4 provided at its center has a plurality of inner surfaces. It is made by welding two bag sheets 5 together.

Each bag sheet 5 is a transparent thin film made of a sheet material 8 such as vinyl chloride, and has pockets 6 and 7 on both sides thereof. In detail,
Each bag sheet 5 is made by folding a sheet material 8 into an S-shaped cross section, and the left and right edges 5a, 5b are as follows:
They are located on opposite sides of each other. The upper edge 5c and lower edge 5d of the bag sheet 5 are joined by heat welding to form the pockets 6 and 7. That is, each pocket 6, 7 has its insertion opening 6a, 7a connected to the central part 5 of the bag sheet 5.
It is formed into a side-loading type with an opening near e, and when the bag sheet 5 is opened, the insertion port 6
a and 7a are located on opposite sides of each other. A plurality of such bag sheets 5 are stacked and thermally welded to the spines 4 of the covers 2 and 3 while being overlapped in the thickness direction.

In manufacturing the pocket file 1 having such a configuration, the following manufacturing method is adopted. The manufacturing method will be described below with reference to FIGS. 3 to 6. Said bag sheet 5
A third sheet is placed on both sides of the long sheet material 8 to be formed.
As shown in the figures and FIG. 4, two sets of guide mechanisms 9 and 10 with different front and rear positions are arranged independently from each other, and these guide mechanisms 9 and 10 are arranged on the leading end side of the sheet material 8. between the fuse cutter 11 and
A pair of rollers 12 are arranged. The sheet material 8 wound into a roll is sequentially fed out by these rollers 12 and conveyed in the longitudinal direction.

One guide mechanism 9 includes a pair of rods 9a, 9
One of the rods 9a is attached to the surface 8a of the sheet material 8, and its tip is positioned on the roller 12 side in an oblique position. The other rod 9b is attached to the back surface 8 of the sheet material 8 that is bent along the rod 9a.
It is attached to b. The leading end thereof is positioned obliquely near the center 5e of the sheet material 8 toward the roller 12, and is also brought close to the leading end of one of the rods 9a via the sheet material 8.

The other guide mechanism 10 consists of a pair of rods 10a and 10b arranged closer to the roller 12, one of the rods 10a is attached to the back surface 8b of the sheet material 8, and its tip is attached to the roller 12. It is placed on the side in an oblique position. The other rod 10b is the same as the rod 10 above.
Surface 8a of sheet material 8 folded along a
It is attached to. The leading end thereof is positioned obliquely near the center 5e of the sheet material 8 toward the roller 12, and is also brought close to the leading end of one of the rods 10a via the sheet material 8.

The fusing machine 11 consists of a pair of hot plates disposed above and below the sheet material 8 so as to be perpendicular to the longitudinal direction of the sheet material 8, and a protruding blade is provided at the center of the upper piece 11a, and a protruding blade is provided at the center of the upper piece 11a. A groove into which the blade fits is formed in the center of the piece 11b.

With such a configuration, when the rollers 12 are driven to convey the sheet material 8 in the longitudinal direction, one edge side of the sheet material 8 is moved by one guide mechanism 9 to the back surface 8b of the sheet material 8. is surface 8
It is reversed to the a side, and on the other side edge side of the sheet material 8,
Since the front surface 8a of the sheet material 8 is reversed to the back surface 8b side by the other guide mechanism 10, the sheet material 8 has an S-shaped cross section as shown in FIG. Next, when the sheet material 8 in this form is passed through the rollers 12, both guide mechanisms 9, 10
The portion attached to the tip of one of the rods 9a, 10a forms a crease, and both side edges of the sheet material 8 are bent in opposite directions to form a double structure. Further, when the sheet material 8 is guided to a fusing machine 11 and cut into predetermined dimensions, the upper edge 5c of one of the cut sheet materials 8 and the lower edge 5d of the other sheet material 8 are separated, as shown in FIG. are welded at the same time,
Pockets 6 and 7 are formed on both sides of each sheet material 8. That is, each divided sheet material 8 becomes the bag sheet 5 having pockets 6 and 7 with insertion ports 6a and 7a opening toward the center portion 5e on both sides 8a and 8b, respectively, and the cross section thereof is S. It becomes a letter shape. Then, by stacking a plurality of bag sheets 5 thus formed and thermally welding the center portion 5e to the spine 4 between the covers 2 and 3, a side-fitting type pocket file 1 is obtained.

Therefore, according to the above configuration, since the central portion 5e of each bag sheet 5 is single-layered, a plurality of bag sheets 5 are stacked and the central portion 5e is heated to the spine 4 between the covers 2 and 3. Even if welded, sufficient bonding strength between the bag sheet 5 and the covers 2 and 3 is ensured, and each bag sheet 5 becomes difficult to peel off. Moreover, the insertion openings 6a and 7a of the pockets 6 and 7 formed on both sides of each bag sheet 5 all face in the same direction when the bag sheet 5 is closed, so when inserting stored items such as photos, all Another convenience is that they can be inserted from the same direction.

When forming the bag sheet 5, the guide mechanisms 9 and 10 arranged on both sides of the sheet material 8 bend both sides of the sheet material 8 to opposite sides to form a double layer. When cutting the sheet material 8 to a predetermined size, the upper edge 5c of one sheet material 8 and the lower edge 5 of the other sheet material 8 are
d is simultaneously welded and cut at the center, so the manufacturing operation of the bag sheet 5 can be performed quickly and easily. Further, the guide mechanisms 9 and 10
By adjusting the dimension M between the tip of one of the rods 9a, 10a and the end of the sheet material 8, the position of the fold can be changed.
The positions of a and 7a can also be adjusted to desired positions. Further, since both guide mechanisms 9 and 10 are provided independently from each other, bag sheets 5 of various sizes can be manufactured by changing their relative mounting positions.

Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above embodiment.

For example, the bag sheet is not limited to vinyl chloride, but other types of sheet materials such as polyethylene and polypropylene can also be used. and,
This sheet material is not limited to a transparent material, and may be a translucent material or an opaque material.

[Effects of the Invention] Since the present invention has the above configuration, the bonding strength between the bag sheet and the cover is excellent, and
It is possible to provide an easy-to-use pocket file. In particular, according to the present invention, even if the portion near the opening of the pocket curves and protrudes so as to cover the other party, the insertion ports do not come close to each other and face each other, so the protrusion does not occur. There is no problem in that the opening edge of the side insertion port covers the other insertion ports and interferes with the operation of inserting photos and the like. Therefore, there is a problem peculiar to the case where the central part of each bag sheet is overlapped and welded in the thickness direction, namely, when the center page is not opened, the pocket located on the lower side of the curve cannot be used. This can solve the problem of difficulty.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 schematically shows the manufacturing process of the pocket file. Figure 4 is a diagram to clearly show the vicinity of section A in Figure 3, Figure 5 is a diagram showing the area - in Figure 3.
FIG. 6 is a cross-sectional view taken along the line in the direction of the arrow, and is a cross-sectional view for clearly showing part B in FIG. 3. 1...File with pocket, 2...Front cover, 3
...Back cover, 4...Spine, 5...Bag sheet, 5e...
...Central part, 6, 7...Pocket, 6a, 7a...
Inlet, 8...Sheet material, 8a...Surface,
8b... Back side, 9... One guide mechanism, 10...
...The other guide mechanism, 11...fusing machine.

Claims (1)

[Claims] 1 The center portions of a plurality of bag sheets having pockets on both sides are overlapped and welded in the thickness direction to the spine of a cover, and each bag sheet is formed by folding the sheet material into an S-shaped cross section. A file with a pocket, characterized in that it is folded and its upper and lower edges are joined.