JPH0311637B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a pocket file made of synthetic resin film that can be used to store documents and photographs and which can be freely inserted and removed.

PRIOR ART AND THEIR PROBLEMS Pocket files are in great demand because they allow documents and photos to be easily inserted and removed, they can be stored while being transparent, and their appearance is beautiful. When this pocket file is spread open, it has a binding part (seal part) in the center, and top-open pockets are arranged on the left and right sides of it. An inner paper is inserted into the inner paper, and stock materials are inserted on the front and back sides of the inner paper as a boundary, so that each can be viewed through without interference.

Conventionally, an example of a method for manufacturing pocket files with the above structure is to use a synthetic resin tube.The tube is hung on a sling, and as it is unrolled, it is cut to size, and a bottom seal (seal at the cut part) is attached. A method is adopted in which the bag is processed by applying a center seal to the center of the bag to form top-open pockets on the left and right sides.

However, while the method using tubes has the advantage that each pocket can be formed by side folding, when inserting the inner paper, the face sheet and back sheet forming the bag body are charged and come into close contact with each other. Since the bag is inserted through the mouth of the bag with the width of the opening, it is extremely difficult to insert the bag whether it is inserted before or after applying the center seal. In addition, when inserting two pieces of inner paper before applying the center seal, it is difficult to set the position, which may result in poor posture and the inner paper may be sealed together with the center seal. After applying this, the bag body forming the pocket is reduced to one-half, making it extremely difficult to insert pocket-sized inner paper, and this is one of the reasons for hindering the automation of pocket file manufacturing.
At present, the insertion of the above-mentioned inner paper has to be done almost entirely by human power.

Naturally, there is a limit to the amount of work that can be done manually, and no improvement in productivity can be expected, and it is also a factor in increasing costs, making it impossible to meet demand.

Purpose and Summary of the Invention The present invention provides a semi-processed bag for inserting inner paper, in which a face sheet is divided into two at the center opening, and can be opened and closed in a semi-golden shape (L-shape). The first and second separate face sheets, which are divided into two at the center open part of the semi-processed bag, are each opened on one side, and the inner paper is inserted using the corner part formed by the bottom seal part and each side fold part as a ruler side. By adopting this method, the insertion of two sheets of inner paper is significantly simplified, and the difficulty of inserting inner paper using the top opening part as a cue has been overcome in the past, and then the semi-processed bag with the inner paper inserted is created. By applying a seal to the center open part of the paper and forming a first pocket and a second pocket on the left and right sides of the sealed part, the center open part required for inserting the inner paper can be repaired and the required center seal part can be formed. In addition, a pair of left and right inner paper inserted pockets can be formed appropriately and rationally.

In addition, by adopting the simple operation of simply lifting the separate face sheet, which has been divided into two parts, opening it, inserting the inner paper, and then simply sealing it, the problem with the work process of inserting the inner paper, which has traditionally been the bottleneck for automation, has been solved. This eliminates the problem and makes it possible to mechanize and automate the insertion of inner sheets and file production.

Examples of the invention Embodiments of the present invention will be described in detail below with reference to the drawings.

First, an embodiment thereof will be described in accordance with the process diagrams shown in FIGS. 1A to 1O, which express the idea of the present invention.

FIGS. 1A to 1E show the manufacturing process of a semi-processed bag, and show a case where a belt-shaped sheet 1a made of a synthetic resin film is used as the raw material for the semi-processed bag. The strip-shaped sheet 1a is transparent. This is shown in Figure 1 A and B.
As shown in the figure, while continuously feeding, both ends of the flat strip sheet 1a are counterfolded in the feeding direction so that each folded piece has the same width. 1b shows a double-folded sheet.

The double-folded belt-like sheet 1b was formed by folding the belt-like sheet 1a, but as another example, a tube made of a synthetic resin film was used, and the belly of the tube was cut in the feeding direction.
b can be formed.

While feeding the double-folded strip sheet 1b, heat sealing is performed at equal intervals in a direction perpendicular to the feeding direction. 1
c indicates a seal portion. At the same time as the sealing or after the sealing, the seal portion 1c is cut P at the center in the longitudinal direction. The belt-shaped sheet is fed intermittently, and the above-mentioned sealing and cutting are performed when the sheet is stopped.

In this way, the pre-processed bag 1f is formed by the above-mentioned cutting P. The pre-processed bag 1f has a bottom seal part 1c' and a top seal part 1c'' which are divided into two parts, and has a center open part 1e in the center that reaches both the seal parts 1c, ', 1c'' (Fig. 1D). reference).

The double-folded belt-shaped sheet portion 1b' located ahead of the foremost seal portion 1c shown in FIG. 1C is cut off at the beginning of operation. That is, the pre-processed bag 1f is formed between the seal portions 1c' and 1c''. Next, as shown in FIG. 1E, the top seal portion 1 of the pre-processed bag 1f is formed.
Remove c″ and open the top.

In this way, the face sheet forms a center open part 1 extending from the center of the top open part 1h and the bottom seal part 1c' to the top open part 1h.
1 g of a semi-processed bag opened in an L shape is obtained by e. The semi-processed bag 1g is divided into two by the center open part 1e by the above processing, and a first separate face sheet 1j and a second separate face sheet 1k which can be opened and closed from the center open part 1e and the top open part 1h are formed. Be prepared.

The first and second separate face sheets 1j and 1k are connected to the back sheet 1l in an L shape by the bottom seal part 1c' and the side fold part 1i, and can be opened and closed in the L shape as described above using this as a connecting side. It is.

An inner paper is inserted into 1 g of the semi-processed bag formed as described above. FIGS. 1F to 1F show the first inner paper inserting process, and FIGS. 1J to M show the second inner paper inserting process.

To prepare the semi-processed bag 1g, first open the first separate face sheet 1j from the center open part 1e and top open part 1h, as shown in FIG.
Insert the inner paper 2a, and then similarly open the second separate face sheet 1k into an L shape from the center open part 1e and the top open part 1h, as shown in FIG. Insert the inner paper 2b.

The first and second inner sheets 2a and 2b are required to be inserted into each pocket with almost the same size and without any play due to the purpose and appearance of the pocket file.

Figures 1F and 1J illustrate an embodiment for carrying out the preferred insertion configuration. In order to achieve the above purpose, the first inner paper 2a is opened on one side of the first separate face sheet 1j, and
As shown in the figure, it is inserted so that one side is pressed against the side fold part 1i, one end is spaced apart from the bottom seal 1c', and the other end projects from the top open part 1h. Thereafter, as shown in FIG.
The other end of the inner paper 2a is pressed against the corner formed by the bottom seal part 1c' and the side fold part 1i. By forming the temporary insertion state as described above and pushing in, the inner paper is inserted along the bottom seal part 1c' and the side fold part 1i. At this time, the first
Since the vertical and horizontal dimensions of the inner paper 2a are sized to fit the pocket dimensions, the bottom seal portion 1
c' and the side folds 1i as the ruler sides, the top open portion 1h and the center open portion 1e are inserted substantially in line with each other.

In this embodiment, as shown in FIG.
This figure shows a case in which the length of the first inner paper 2a is set to slightly protrude from the top opening portion 1h, and the protruding end of the first inner paper 2a is cut on a line that coincides with the top open portion 1h, as shown in the figure. In the figure, 2' indicates a cut piece of paper. The first inner paper 2
Insert the second inner paper 2b in the same manner as in a.

A semi-finished bag with inserted inner paper, in which the first inner paper 2a and the second inner paper 2b are inserted between the first separate face sheet 1j and the back sheet 1l and between the second separate face sheet 1k and the back sheet 1l as described above; That is, 1 m of semi-processed pocket file is obtained.

The center open part 1e of the semi-processed pocket file 1m thus formed is subjected to a center seal by heat sealing or the like as shown in FIG. 1N, and each edge of both separate face sheets is attached to the back sheet 1l. The first paper with the first inner paper 2a inserted
A pocket file 1q having a pocket 1n and a second pocket 1p into which a second inner paper 2b is inserted is completed. 3 in the figure indicates the center seal portion.

As shown in Figure 1 O, the center seal portion 3
Stack multiple 1m semi-processed pocket files,
Including cases where it is applied all at once. In addition, a temporary center seal is applied to 1 m of semi-processed pocket file, and the inner paper is moved.
This also includes the case where a plurality of sheets are stacked on top of each other and a finishing center seal is applied after preventing separation.
The center seal 3 is formed not only by point welding but also by linear welding as shown in the figure.

FIGS. 3 to 8 illustrate an apparatus for carrying out the invention described above. The present invention will be further explained based on the same device.

Figure 3 shows the flat strip sheet 1a of Figures 1A and B.
This shows an apparatus corresponding to the process of processing a double-folded belt-shaped sheet. As shown in the figure, a pair of folding plates or folding bars 4 are arranged as a double folding device so that their inner edges gradually close in the feeding direction of the flat belt-shaped sheet 1a, and a feeding roller 6 is used to separate the folding plates 4 between the two folding plates 4. The belt-shaped sheet 1a is pulled out from the expansion side to the closing side, and while both sides of the sheet are gradually raised up on the inner edge of the folding plate 4, a double fold is completed on the closing side of the folding plate.

A folding width setting ruler 5 is arranged between both folding plates 4, and is installed so as to be interposed in the raised sheet portions on both sides of the band-shaped sheet 1a.

Next, as a device corresponding to the sealing and cutting process shown in FIGS. 1C and 1D, a seal cutter 6 is disposed at the front of the double folding device, and is operated periodically to cut the double folded strip sheet 1b in the feeding direction. Heat sealing is performed at equal intervals in orthogonal directions, and at the same time, the heat sealed portion 1c is cut on its center line. In this way, the pre-processed bag 1f is formed.
When the seal cutter is operated, the feeding of the double-folded strip sheet 1b is stopped. 8 indicates a heater of a heat cutter, and 9 indicates a cutter receiving roller.

Next, a top seal cutter 10 that operates periodically is arranged as a device corresponding to the top open portion forming process shown in FIG. '' and open a top open portion 1h. In this way, the semi-processed bag 1g is formed.1
1 indicates the cutter holder.

Each of the semi-processed bags 1g is further conveyed further forward at equal intervals by a pusher 13 provided on a feed belt 12, and is delivered to an inner paper inserting device.

A vacuum belt 14 is provided in parallel with the feed belt 12 on the feed path for the semi-processed bag 1g.
This vacuum belt 14 has a large number of air suction holes 14a aligned on the surface that contacts the back sheet 1l of 1 g of semi-processed bags, that is, the same surface as the guide plate that supports the back sheet 1 l of 1 g of semi-processed bags. 15 along the length of the belt
is provided to generate suction force in the suction hole 14a,
While suctioning and holding 1 g of the semi-processed bag in a fixed position, it cooperates with the pusher 13 and contributes to conveying the semi-processed bag 1 g.

During the conveyance process, the inner paper is inserted by the inner paper inserting device shown in FIGS. 6 and 7.

As shown in FIG. 1F, first, the corner of the first separate face sheet 1g of the semi-processed bag 1g which is being conveyed in an aligned manner is sucked by the sucker 16 and turned up. At the top of 1g of semi-processed bags, there is a turning guide 1 close to the feeding direction side of the corner turning position.
7a is provided, and the turning guide 17a is provided with a first corner turning guide 17a.
The corner portion of the separate face sheet 1j is released from suction and supported.

The turning guide 17a is inserted into the inner surface of the first separate face sheet 1j as the semi-processed bag 1g is fed, and turns over. The first
The separate face sheet 1j is further supported at a higher position by a turning guide 17b provided adjacent to the feeding direction side as the feeding progresses, and forms a state in which it is properly opened on one side from the top open portion 1h and the center open portion 1e. Then, feeding is stopped and the machine waits for inserting the inner paper.

On the other hand, on the side of the conveyance path, the inner paper 2a that always maintains the upper limit level is stacked flat, and the uppermost inner paper 2a
The paper is sucked by the sucker 18 and fed onto the inner paper insert guide plate 20 by the feeding roller 19. The inner paper insert guide plate 20 is extended from the flat stacked inner paper side to the upper part of the semi-processed bag 1g, and its end reaches near the single opening of the expanded first separate face sheet 1j.

The first inner paper 2a sent out onto the inner paper insert guide plate 20 is further moved by a inner paper insert pusher 21 (a feeder that travels along the inner paper insert guide plate 20) which moves back and forth along the upper surface of the inner paper insert guide plate 20. attached to the belt 22 and driven)
The sheet is pushed out to the sheet expansion opening while sliding on the upper surface of the feed guide plate, and as the inner sheet insert pusher 21 advances, the first sheet, which is supported in a single-open state by the turning guide 17b, is pushed out to the sheet expansion opening.
It is inserted into the inner surface of the separate face sheet 1j, that is, between the face sheet 1j and the back sheet 1l. In order to compensate for the lack of insertion of the inner paper,
An inner paper damage pusher 23 is provided which is projected further forward from the feeding end of the inner paper insert pusher 21, and the inner paper damage pusher 23 is provided.
Immediately after the insert pusher 21 is separated from one side of the inner paper, the insert pusher 3 is made to protrude to apply further pushing force to the one side of the inner paper. As a result, the other side of the first inner paper 2a can be more securely folded into the side folded portion 1i of the semi-processed bag 1g.
to press against. The insertion of the first inner paper by the pusher 21 is performed by shifting the position of the inner paper so that the end (front side) on the feeding direction side projects from the top open portion 1h. In this way, the inserted state of the first inner paper 2a shown in FIG. 1G is obtained.

In the same state, 1 g of the semi-processed bag with the first inner paper inserted is further transported to the forward pusher 24 provided at the upper part of the transport path.
The first part that can protrude from the top open part 1h at
A pushing force is applied to the front side of the inner paper, and the rear side of the first inner paper is pressed against the bottom seal portion 1c'. As a result, the first inner paper 2a has a bottom seal part 1c' and a side fold part 1.
It is inserted without any play into the corner formed by the center open part 1e and the top open part 1h.
As a result, insertions are made that are approximately consistent with both. In this case, the length from the bottom seal part 1c' of the first inner paper 2a to the top open part 1h can be slightly lengthened and the edges can be cut so that it coincides with the top open part 1h, as shown in FIGS. 1H and I. It is as explained based on this.

Although not shown, a device similar to that used for the first inner paper 2a is arranged to insert the second inner paper 2b into the second separate face sheet 1k. 2nd inner paper 2
In the case of b, the insertion is from the opposite side to the case of the first inner paper 2a, and the stock of the second inner paper 2b, the feed direction by the pusher 21, the turn-over tracker 16,
The turning guides 17a and 17b are all oriented in opposite directions.

In the embodiment, the first inner paper 2a and the second inner paper 2b are inserted from the side of the semi-processed bag 1g (from the center open part 1e side), but
Depending on the design, it can also be inserted from the top open portion 1h side or from the corner portion direction of the top open portion 1h and center open portion 1e.

As described above, a semi-processed bag with the first and second inner paper inserted, ie, 1 m of semi-processed pocket files, is obtained, which is further conveyed to a heat sealing device.
FIG. 8 shows a case where a heat-sealing device 25 for temporarily fixing each single file is provided above the conveyance path, and further a device 26 for heat-sealing stacked files all at once is provided above the conveyance path.

Then, 1 m of the semi-processed pocket file was brought directly below the heat sealing device 25, and while the conveyance was stopped, the heat sealing device 25 was moved down by the cylinder 27, and the heat sealing pin 28 was moved to the center open portion 1e. Press. As a result, the edge ends of the first and second separate face sheets 1i, 1k are fused to the back sheet 1l.

Furthermore, the temporarily attached file is heated by a heat sealing device 25.
The sheets are stacked flat on an inclined stock stand 29 provided on the delivery side of the sheet, and a predetermined number of sheets is counted (counted using a phototube or a limit switch, etc.).

After counting the number of books, the pusher 30 etc. are operated to slide the front plate 32 to a non-interfering position and carry it directly below the heat sealing device 26, and while the feeding is stopped, the heat sealing device 26 is lowered by the cylinder 31. move it,
The heat seal pin 33 is attached to the center open part 1e.
Press the button to seal one volume of files at once.

The top-opened first pocket 1
Pocket files 1q are formed in units of books, each having a pocket file 1q and a second pocket 1p, with first and second inner sheets 2a and 2b inserted into each pocket.

Effects of the Invention According to the present invention, the first separate face sheet and the second separate face sheet formed by dividing the face sheet into two as described above are opened in an L-shape from the center open part and the top open part, respectively. It is extremely easy to insert the first and second inner sheets into the parts that will become the first and second pockets, and at this time, the corners sealed by the bottom seal part and side fold part of the first and second separate face sheets Since the part is located opposite to the single-open corner part, the sealed corner part can be used as the ruler side to be properly inserted without play or positional deviation, and the first and second middle parts can be inserted at the ruler side. Even while the corners of the paper are restricted and the paper is transferred to the subsequent center sealing process, the insertion position can be maintained correctly and the paper can be subjected to the center sealing process.

The present invention makes it possible to simplify the insertion of the first and second inner sheets by considering a semi-processed bag in which a face sheet is divided into two parts as described above and implementing the method described above.

In addition, while attempting to simplify the inserting of the inner paper, a center open part where the first face sheet and second face sheet butt each other is formed in the area where the center seal should originally be made, and the same center seal as before is placed at the same place. By simply applying the method, the sealing repair of the center open part and the definition of the first and second pockets with inner paper inserted can be performed very easily without increasing the number of steps.

As a result of the above, we have overcome the difficulty of inserting inner paper into the first and second pockets, which has traditionally been a bottleneck for automation, and have made it possible to insert the first and second inner paper, generate the same pockets, and mass-produce files through automation. It is extremely effective in contributing to the rationalization and labor saving of pocket file production.

[Brief explanation of the drawing]

Figures 1A to 0 show an embodiment of the basic idea of the present invention, and Figure 2 is a plan view illustrating the step-by-step process of producing a semi-processed bag, inserting inner paper, etc., and Figure 2 is a pocket file. The cross-sectional views and FIGS. 3 to 8 illustrate an apparatus for carrying out the present invention, FIG. 3 is a plan view of a double folding device, FIG. 4 is a perspective view of a semi-processed bag forming device, and FIG. 6 is a perspective view of the inner paper insertion device, FIG. 7 is a cross-sectional view of the same side view, and FIG. 8 is a perspective view of the sealing device. 1a...Flat band-shaped sheet, 1b...Gun-folded band-shaped sheet, 1c'...Bottom seal part, 1e...Center open part, 1g...Semi-processed bag, 1h...
Top open part, 1i...Side fold part, 1j...
...First separate face sheet, 1k...Second
Separate face sheet, 1l...back seat, 1n...first pocket, 1p...second pocket, 1q...pocket file.

Claims (1)

[Scope of Claims] 1. The back sheet and the face sheet are bottom sealed, and the face sheet is divided into two by a center open part extending from the center of the bottom seal part to the top open part to form a first separate face sheet and a second separate face sheet. forming a semi-processed bag made of a transparent synthetic resin film in which each of the first and second separate face sheets is connected to the back sheet at a side fold portion;
The first separate face sheet of the semi-processed bag is opened in an L shape from the center open part and the top open part, and the corner part formed by the bottom seal part and one side fold part is used as a ruler side. 1 Insert the inner paper, and similarly open the second separate face sheet from the center open part and top open part in an L shape, and use a ruler to mark the corner formed by the bottom seal part and the other side fold part. Insert the second inner sheet while forming the sides, then apply a center seal to the center open part, adhere each edge of the first and second separate face sheets to the back sheet, and then seal the first and second pockets. A method for manufacturing a pocket file characterized by forming. 2. A patent characterized in that the first inner paper and the second inner paper are inserted so that one end thereof protrudes from the top open part, and a pushing force is applied to the protruding end, and the paper is inserted to a depth such that it abuts against the bottom seal part. A method for manufacturing a pocket file according to claim 1. 3. The method for manufacturing a pocket file according to claim 1, characterized in that a plurality of semi-processed bags with inner paper inserted therein are stacked and the center sealing is performed at the same time.