JPH09300874A - Filing sheet and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it hard to develop wrinkles in each pocket part under the state that a matter to be housed is housed in the pocket part and realize the setting of the larger effective dimensions of the pocket part by a method wherein the size of the peripheral edge of each pocket part is made unchanged between under the state that the matter to be housed is housed in the pocket part and under the state that no matter to be housed is housed in the pocket part in a filing sheet equipped with the pocket parts, each of which is made of a front sheet and a rear sheet. SOLUTION: This filling sheet is made of synthetic resin flexible front sheets and a rear sheet and equipped with the front sheet put upon the rear sheet so as to form each flay and almost rectangular parallelepiped-like pocket part 3 by welding its peripheral edge, each U-like or C-like split 13, which extends from the starting point 11 locating near one end of one side of the front sheet of the pocket part 3 to the finishing point 12 locating near its other end, and each lid part 14 surrounded by the split 13. In addition, the peripheral edge of the front sheet of the pocket part 3 is formed into a curved part, which curves from the welded part 10 between the front sheet and the rear sheet to the front side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file sheet, and more particularly, to a bag portion for accommodating a cased disc for a recording medium by superposing and welding a flexible front sheet and a back sheet made of synthetic resin. The present invention relates to the formed file sheet.

[0002]

2. Description of the Related Art A hard case type is known as a file sheet for accommodating a case-enclosed disk for a recording medium, and has a plate shape for accommodating the case-enclosed disk for the recording medium. The holders are arranged vertically and horizontally. Since the whole is made of a hard synthetic resin, it is difficult to handle when it is bound to a binding tool such as a file.

Further, even when the case-containing disk is not housed, it is inconvenient because it becomes bulky. As a file sheet for eliminating such inconvenience, as shown in FIG.
The front sheet (1) and the back sheet (2) made of synthetic resin are linearly welded to each other along the periphery of the rectangular area to form the bag portion (3).
It is conceivable that the above-mentioned front sheet (1) of (1) is formed with an inlet for the bag portion (3).
Since the (1) and the back sheet (2) are composed of flat sheets, when the disc (D) with a case is housed in the bag portion (3), wrinkles (L) are formed around the periphery of the bag portion (3). ) Occurs.

In order to ensure that the disk (D) with the case can be accommodated, the welded portion (1
The rectangular area surrounded by (0)
It must be sufficiently larger than the plane shape of (D). The front sheet (1) and the back sheet that have been adhered to the front and back when the disc (D) in the case is stored.
(2) must be transformed into a three-dimensional bag,
This is because a margin for that amount is required. From this,
The planar shape of the entire file sheet greatly changes between the accommodation state in which the cased disc (D) is accommodated in each bag portion (3) and the non-accommodation state in which the disc (D) is not accommodated. If the size of the file sheet is fixed, there is a problem that the effective size of the bag part (3) cannot be set large.

[0005]

The invention of claim 1 is a file sheet having a bag portion (3) comprising a front sheet (1) and a back sheet (2) as described above, wherein the bag portion is
The bag part in (3) contains the contents and contains no contents.
By keeping the size of the peripheral edge of (3) unchanged, the bag part (3) can be stored in the bag part (3) in a state where the object is contained in the bag part (3).
It is an object of the present invention to prevent wrinkles from being generated on the bottom and to set a large effective dimension of the bag portion (3).

The inventions of claims 2 to 4 aim to obtain each effect described in the section of effect in addition to solving the above problem, and the invention of claim 5 relates to the invention of claim 1. The challenge is to be able to rationally manufacture file sheets. Another object of the invention of claim 6 is to make it possible to rationally manufacture the file sheet of the invention of claim 2.

[0007]

[Means for Solving the Problems] The means for solving the above-mentioned problems according to the invention of claim 1 is "a synthetic resin flexible front sheet (1) and back sheet (2) A flat substantially rectangular parallelepiped bag portion (3) formed by stacking the sheet (1) and the back sheet (2) and welding the peripheral edge,
A U-shaped or C-shaped cut (13) extending from a start point (11) near one end of one side of the front sheet (1) of the bag portion (3) to an end point (12) near the other end; A lid portion (14) surrounded by a cut line (13) is provided, and a peripheral edge of the front sheet (1) of the bag portion (3) has a welded portion (10) between the front sheet (1) and the back sheet (2). To the curved part (R) that curves to the front side ”.

The above solution works as follows. The bag part (3) is a flat rectangular parallelepiped having a lid part (14) on one side. The bag (3) is a flat hollow body with the back sheet (2) side being flat and the peripheral edge of the front sheet (1) side being a curved section (R) that curves from the welded section (10) to the front side. Therefore, if an accommodation object smaller than this hollow body and similar thereto is accommodated, the accommodation object is accommodated in the peripheral edge of the bag portion (3) without an unreasonable external force.

When a plurality of the file sheets are bound in a file binding device or the like in the housed state, an object to be housed is not contained because the lid part (14) closes the inlet part of the bag part (3). It doesn't protrude easily. In the invention of claim 1, claim 2
According to the invention of "the bag file sheet having a rectangular shape as a whole and one side serving as a binding side, the plurality of bag parts (3)
(3) are arranged side by side in the vertical and horizontal directions, and the boundary part and outer peripheral part of these bag parts (3) and (3) become the welded part (10), and the lid part (14).
The bag portions (3) and (3) are arranged side by side so that they are oriented in the same direction. ”In this case, a large number of objects can be accommodated in one file sheet, and the objects can be easily taken in and out. .

In the invention of claim 1 or 2, as in claim 3, "the curved portion (R) at the periphery of the front sheet (1)"
The space (H) between the part following the and the back sheet (2) is larger than the thickness of the cased disc (D) for the recording medium, and the space between the start point (11) and the end point (12) is the case disk
If it is set larger than the width of (D), it will be convenient for storing and organizing the disk (D) in the case.

In the inventions of claims 1 to 3, as in claim 4, "a thin portion parallel to the welded portion (10) on the welded portion (10) side of the lid portion (14). In the case of “providing (15)”, since the bent portion for opening and closing the lid portion (14) is determined by the thin portion (15), the lid portion (14) is easy to use. When the gap between the thin portion (15) and the welded portion (10) in the vicinity of the thin portion (15) is made to substantially match the thickness of the cased disc (D), the cased disc (D) is inserted into the bag part (3). When housed,
The tip end side of the lid portion (14) from the thin portion (15) follows the surface of the cased disc (D).

The means for solving the problems of the invention of claim 5 is that "a synthetic resin flexible front sheet (1) extends from a starting point (11) near one end of one side of a rectangular region to an end point (12) near the other end. A first step of forming a U-shaped or C-shaped cut (13) on the front sheet (1), and a flexible back sheet (2) made of synthetic resin on the back side of the front sheet (1). A rectangular plate-shaped jig (J) having a certain thickness in the rectangular area by overlapping
Step, the back sheet (2) is maintained in a flat state as a whole, and the peripheral edge of the rectangular region including the cut line (13) in the front sheet (1) is placed on the surface of the back sheet (2). And a third step of pressure welding, wherein the jig (J) is set to have a lateral width that can be taken out from the cut (13) and the corner portion of the peripheral cross section is formed in an arc shape. ” Is.

According to this problem solving means, the front sheet (1)
By inserting a jig (J) between the front and back sheets (2) and welding the front and back front sheets (1) and back sheet (2), the flat, substantially rectangular parallelepiped bag portion (3) is formed. It is formed. In the third step of welding, the front sheet (1) was flattened toward the front sheet (1) by the jig (J) while the back sheet (2) was kept flat. The hollow bag that is maintained in the state
(3) is formed, and the hollow shape of the bag portion (3) is determined by welding the periphery of the bag portion (3). At this time, the jig
The soft contact sheet is used because the contact area with the front sheet (1) at the periphery of (J) is finished in a smooth arc shape.
(1) is welded in a deformed state along the curved surface. Therefore, the back sheet (2) is kept flat and the front sheet at the peripheral portion of the bag portion (3).
(1) is plastically deformed into a curved portion (R) from the welded portion (10) in a state in which the welded portion (10) is reasonably curved to the front side.

It is desirable that the four corner portions (corner portions on the plan view) at the intersections of the side edges of the jig (J) also have an arc shape as shown in FIG. In the manufacturing method of the invention of claim 5, as in the invention of claim 6, "the front sheet
(1) and the back sheet (2) are a plurality of the rectangular areas are arranged side by side in the vertical and horizontal directions, and one side is a binding margin portion to be bound by the binding device, and in the first step, each of the rectangular areas is formed. The cuts (13) and (13) are formed in the same direction in the same direction, the jig (J) is interposed in each of the rectangular regions in the second step, and the jig (J) is inserted in the third step. The boundary and the outer peripheral area of the juxtaposed area of (J) are linearly welded and the binding hole is formed in the binding side. ”
A plurality of bag portions (3) and (3) provided with (14) is a file sheet having a configuration in which they are arranged side by side in the vertical and horizontal directions, and in the third step,
Each bag part (3) (3) is formed and at the same time a binding side having a binding hole is formed.

[0015]

According to the first aspect of the present invention, since the object to be contained is accommodated in the peripheral portion of the bag portion (3) in a state where no unreasonable external force acts, the bag portion is inserted when the object is inserted. Wrinkles do not occur on the periphery of (3), and the effective size of the bag part (3) can be set large for a file sheet of a fixed size.

According to the invention of claim 2, in addition to the above effects,
The number of objects to be accommodated in one file sheet increases, and the objects can be easily taken in and out. According to the invention of claim 3, in addition to the above effects, a disc in a case
It will be convenient for storing and organizing (D). According to the invention of claim 4, when the cased disc (D) is inserted and housed, the tip side from the thin portion (15) of the lid part (14) is on the surface of the cased disc (D). Since it goes along with it, the inconvenience of the lid (14) bouncing up is unlikely to occur.

According to the invention of claim 5, the front sheet (1) at the peripheral portion of the bag portion (3) is forced from the welded portion (10) to the front side while the back sheet (2) is kept flat. Since the curved portion (R) is curved without being bent, damage is less likely to occur when a part of the front sheet (1) is used as the curved portion (R), and the shape of the flat hollow bag portion (3) is reduced. Easy to decide. Further, since the cut (13) serves as an opening for taking out the jig (J), it is easy to take out the jig (J) after completion of the welding in the third step. As a result, the production of the file sheet having the bag portion (3) of the above-mentioned form can be rationalized.

According to the invention of claim 6, in the third step, since the bag portions (3) and (3) are formed and at the same time the binding side having the binding holes is formed, the binding piece is removed. It is possible to rationalize the production of a file sheet that includes a plurality of bags (3) and (3).

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The filing sheet of the embodiment shown in FIGS. 2 to 4 is an A-4 size filing sheet, and one vertical side is a binding side, and the edges of the binding side are the edges. A binding margin portion (4) having a constant width is provided from the inside. In addition, six bags (3) and (3) are arranged side by side in two columns and three rows in other areas.

The plane shape and thickness of each bag portion (3) is M, which is a kind of the case-enclosed disk (D) for the recording medium described above.
The size is set to accommodate an O-128M MO disc. This bag part (3) is developed in a plane and is A-4.
The front sheet (1) also set larger than the A-4 size is overlaid on the surface of the flexible synthetic resin back sheet (2) which is set larger than the size, and the front sheet ( It is formed by welding 1) and the back sheet (2) at required parts. A portion corresponding to the outer peripheral area of the bag portion (3) (3) arranged in the above state, and these bag portions (3)
The part corresponding to the boundary part of (3) is welded linearly to form a welded part (10), and the rectangular area surrounded by this welded part (10) is a flat hollow rectangular parallelepiped bag part (3). Becomes

A front sheet (1) which is an upper surface of the bag portion (3)
Is composed of a peripheral side wall part (16) following the welded part (10) and a central flat part surrounded by the peripheral side wall parts (16) (16).
And, the boundary between the peripheral side wall portion (16) and the plane portion is
The curved portion (R) is curved from the welded portion (10) to the front side. (FIG. 3: XX sectional view, FIG. 4: YY sectional view) Further, the starting point (11) near one end of the upper side of each bag part (3) when the file sheet is erected in a vertically long posture. To the end point (12) near the other end, a substantially U-shaped cut (13) is formed, and the range surrounded by the cut (13) and the welded portion (10) is the lid portion (14). The lid portion (14) has a thin portion (15) formed in the vicinity of the upper side and in parallel therewith.

As a result, the lower sides of the lid portions (14) and (14) provided on the six bag portions (3) and (3) become free ends on the opening / closing side, and face in the same direction. The width of this lid (14), that is, the starting point (11)
The distance between the left and right ends of
The width of the MO disc as (D) in the insertion direction is set slightly longer, and the vertical length of the bag portion (3) is the same as the above M.
It is set to be slightly larger than the vertical length of the O disk. Furthermore, the distance from the welded portion (10) to the end point of the curved portion (R) in the cross section of the peripheral side wall portion (16), that is, the front sheet (1) and back sheet of the bag portion (3) in the free state. The distance (H) from (2) corresponds to the thickness of the MO disk or is set to be slightly larger than this dimension.

Further, the welded portion for connecting the lid portion (14) in series.
The distance between the thin wall portion (15) and the gap (10) is also set to match the thickness of the MO disk or slightly larger than this size. In the file sheet having the above configuration, the entire size is set for A-4, and the binding margin portion (4)
Since the binding holes (41) (41) are provided in the binding holes (41) (4)
It can be used by binding it to the A-4 file binding tool using 1). Then, when a plurality of the file sheets are bound and used, the MO discs as the discs (D) in the case are stored in the bag portions (3) and the lid portions (14) are covered, as shown in FIG.
As described above, the portion of the MO disc exposed in the range surrounded by the notches (13) is surely covered by the lid portion (14), and the thin portion (15) is located on the surface side of the MO disc. Since it coincides with the peripheral edge portion, the lid portion (14) does not jump up in the covered state.

Also, the back sheet (2) is kept flat,
Since the front sheet (1) is a rectangular parallelepiped bag portion (3) that is curved in a three-dimensional shape in advance, the front sheet (1) and the back sheet (2)
Even if is a flexible synthetic resin sheet, the above M in the bag (3)
There is no inconvenience that wrinkles occur at the periphery of the bag portion (3) when the O disk is accommodated. In addition, the bag part (3) has the M
Since the size of the peripheral portion of the bag portion (3) does not change between the state in which the O disc is accommodated and the state in which the O disc is not accommodated, the entire A-4 size file sheet can be effectively used.

The filing sheet having the above-mentioned structure is manufactured as follows. First, the cuts (13) are provided in each of the portions corresponding to the bag portion (3) of the front sheet (1) made of the above material which is larger than A-4 size. In addition,
This cut (13) can also be formed by fusing. Then
A back sheet (2) made of the same material is overlaid on the back side of the front sheet (1) on which the cuts (13) (13) are formed so as to match the cuts (13) and the bag portion (3) ( The rectangular plate-shaped jigs (J) (J) having the same thickness as the MO disk are interposed so as to match the respective regions where 3) is formed.

In order to do so, the back sheet (2) is actually placed on the flat upper surface of the flat mold (A) in a developed state as shown in FIG. The jigs (J) (J) are placed on this upper surface, and the front sheet (1) is covered from above with the above relationship. Further, as the jig (J), such as Bakelite resin, it has heat resistance to the extent that it will not be melted or thermally deformed at the welding temperature of the front sheet (1) and the back sheet (2). It is composed of materials. It may be metallic. The plan shape and size of this jig (J) are
It is set to be slightly larger than that of the MO disk, and the corner portion of the peripheral cross section has an arc-shaped cross section as shown in FIG.

After this, the boundary portions of the six jigs (J) and (J), the outer peripheral portion of the juxtaposed jigs (J) and (J), and the welded portion of the peripheral portion of the binding margin portion (4) ( Press the front sheet (1) of the part corresponding to 10)
When the front sheet (1) and the back sheet (2) are welded by pressing the back sheet (2) side by (B) as shown in FIGS. 5 and 6, the back sheet (2) is maintained in a flat shape, The front sheet (1) is formed with a bag portion (3) protruding toward the front side, and a curved portion (R) is formed at the cross-section upper part of the peripheral side wall portion (16) of the bag portion (3).

At the time of the welding, the front sheet (1) corresponding to the peripheral portion of the bag portion (3) is pulled toward the back sheet (2) side and the front sheet (1) corresponding to the peripheral portion has the curved portion. The peripheral side wall (16) provided with (R) is raised, and in this state, the three-dimensional shape of the front sheet (1) corresponding to the peripheral edge is fixed by being welded to the back sheet (2) in a flat state. Because it is done. Since the three-dimensional shape is fixed while the front sheet (1) is pulled in this manner, no wrinkles remain on the front sheet (1) corresponding to the peripheral side wall portion (16).

After this, from the cut (13) portion to the jig
When (J) is taken out, a binding sheet portion (4) having a binding hole (41) and six bag portions (3) and (3) form a file sheet arranged side by side vertically and horizontally. After that, when finish cutting is performed to finish the contour shape of the file sheet, burrs and the like on the peripheral edge are removed to finally obtain a product.

The binding holes (41) (41) are formed by fusing, but the fusing step for forming the binding holes (41) forms the bag portions (3) (3). It can be done at the same time as the welding process. A mold for welding and fusing suitable for this may be used. Further, in the above-mentioned embodiment, the file sheet is provided with the six bag portions (3) and (3), but eight bag portions (3) and (3) smaller than those in this embodiment are arranged side by side. The present invention can be applied to a file sheet having one large bag portion (3).

The binding margin portion (4) is not always necessary.
In addition, the arc of the corner of the cross section of the periphery of the jig (J) is the bag (3).
It may be significantly smaller than the arc of the curved portion (R) of the peripheral side wall portion (16). In short, an extremely small arc may be used as long as it can prevent damage to the front sheet (1) during welding.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an example in which front and back sheets are welded in a flat state.

FIG. 2 is a plan view of the embodiment of the present invention.

FIG. 3 is a sectional view taken along line XX.

FIG. 4 is a sectional view taken along line YY.

FIG. 5 is an enlarged view of an essential part of an XX cross section in a welding process.

FIG. 6 is an enlarged view of a main part of a YY cross section in a welding process.

FIG. 7 is an explanatory diagram showing a state immediately before welding.

FIG. 8 is a partial cross-sectional plan view of the main part of the welding process.

[Explanation of symbols]

(1) ・ ・ ・ Front sheet (10) ・ ・ ・ Welded section (2) ・ ・ ・ Back sheet (4) ・ ・ ・ Binding margin section (3) ・ ・ ・ Bag section (41) ・ ・ ・ Binding hole ( 11) ・ ・ ・ Starting point (R) ・ ・ ・ Curved part (12) ・ ・ ・ Ending point (H) ・ ・ ・ Interval (13) ・ ・ ・ Notch (D) ・ ・ ・ Disc in case (14) ・ ・ ・Lid (J) ... Jig (15) ... Thin portion (16) ... Peripheral side wall part In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (6)

[Claims] 1. A flat front sheet (1) and a back sheet (2) made of a synthetic resin and a flat sheet formed by fusing the front sheet (1) and the back sheet (2) together and welding their peripheral edges. A substantially rectangular parallelepiped bag part (3) and the front sheet of the bag part (3)
A U-shaped or C-shaped cut (13) extending from a start point (11) near one end of one side of (1) to an end point (12) of the other end;
A lid (14) surrounded by 3) is provided, and a peripheral edge of the front sheet (1) of the bag portion (3) is a front side from a welded portion (10) between the front sheet (1) and the back sheet (2). A file sheet with a curved portion (R) that bends to the inside. 2. A file sheet having a rectangular shape as a whole and one side of which is a binding side, wherein the plurality of bag portions (3) (3) are arranged vertically and horizontally and the bag portions (3) ( The boundary portion and the outer peripheral portion of 3) become the welded portion (10), and the bag portions (3) and (3) are arranged in parallel so that the lid portion (14) faces in the same direction. File sheet. 3. The curved portion at the peripheral edge of the front sheet (1)
The distance (H) between the part following (R) and the back sheet (2) is larger than the thickness of the cased disc (D) for recording medium, and the distance between the start point (11) and the end point (12) is The file sheet according to claim 1 or 2, wherein the width is set to be larger than the width of the cased disc (D). 4. The thin portion (15) which is parallel to the welded portion (10) is provided on the welded portion (10) side of the lid portion (14). The file sheet described in. 5. A starting point (11) near one end of a rectangular area of a flexible front sheet (1) made of a synthetic resin to a starting point near the other end.
A first step of forming a U-shaped or C-shaped cut (13) extending in (12) on the front sheet (1), and a flexible back made of synthetic resin on the back side of the front sheet (1). The second step of stacking the sheet (2) and interposing a rectangular plate-shaped jig (J) of a certain thickness in the rectangular area, and maintaining the back sheet (2) in a flat state as a whole. And a third step of pressure welding the peripheral edge of the rectangular region including the cut line (13) in the front sheet (1) to the surface of the back sheet (2). (J) is a method for manufacturing a filing sheet in which a lateral width that can be taken out from the cut (13) is set and a corner section of a peripheral cross section is formed in an arc shape. 6. The front sheet (1) and the back sheet (2) are
A plurality of the rectangular regions are arranged vertically and horizontally and one side is a binding margin portion that is bound by a binding device, and in the first step, the notches (13) (13) are formed in the same direction in each of the rectangular regions. ) Is formed, the jig (J) is interposed in each of the rectangular regions in the second step, and the boundary and outer circumference of the juxtaposed region of the jigs (J) (J) are formed in the third step. The method for manufacturing a file sheet according to claim 5, wherein the areas are welded in a linear shape and the binding holes in the binding sides are formed.