JP2008279748A - Book-making structure for files - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a book-making structure for files by which a bound body can easily opened and rolled up. <P>SOLUTION: This book-making structure for files keeps a file body 14 which is a stack of a large number of file sheets 12 attached to a comparatively stiff cover 16. The stacked end surface of the file body 14 is made to face the internal surface of the cover 16 with a sheet-form insertion material 18 interposed between them in order to connect the cover 16 and the file body 14. In this case, the insertion material 18 has a flexibility which is lower than the cover 16 in order to roll up the file body 14, consists of a thermoplastic resin, and keeps highest in the center, and gets gradually lower closer to the right and left sides. The insertion material 18 is bonded to the file body 14 and the internal surface of the cover 16. The insertion material 18 is constituted in such a manner that the center of the surface to which the insertion material 18 is bonded separates from the back section 20 of the cover 16 when the cover 16 is opened. Also, the insertion material 18 is constituted to have shape-retaining property in order to form a gentle slope which keeps highest in the center and gets gradually lower closer to the front cover paper 22 side and the rear cover paper 24 side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file binding structure in which a binding end surface of a binding body is bonded to an inner surface of a back portion of a cover, and particularly, for example, binding of a file having a binding body having a pocket made of a transparent synthetic resin bonded thereto. Concerning structure.

  Conventionally, as a method of adhering a binding sheet made of a thermoplastic resin and a cover, a binding body is formed by stacking a large number of binding sheets made of a thermoplastic resin, and the overlapping end surface of the binding body and the cover A method is known in which the inner surface of the back portion made of a thermoplastic resin is opposed to each other, and both are melted simultaneously to bond the binding body and the inner surface of the back portion of the cover.

Japanese Patent No. 2523261

  However, a binding body is formed by superimposing a large number of binding sheets made of thermoplastic resin, the overlapping end surface of the binding body is opposed to the inner surface of the back portion made of thermoplastic resin on the cover, and both are melted at the same time for binding. In the method of bonding the body and the back inner surface of the cover, the overlapped binding body is in close contact with the cover, and the cover is flat and hard, so it is difficult to open and to rip There is.

  Therefore, a main object of the present invention is to provide a bookbinding structure for files that can be easily opened and folded.

The file binding structure according to the present invention is a structure in which a binding body in which a large number of binding sheets are overlapped is covered on a relatively hard cover, with the overlapping end surface of the binding body facing the inner surface of the cover, In addition, in order to connect the cover and the binding body, a sheet-like interposition material made of a thermoplastic resin having a softness and flexibility that is softer than the cover for binding the binding body and lowering toward the left and right as the center is formed. The intermediate material is bonded to the binding body and the inner surface of the cover, and when the cover is opened, the center of the surface to which the intermediate material is bonded is separated from the back of the cover and the center is higher on the front cover side and back cover side. This is a bookbinding structure for files and the like, which is configured to have a shape-retaining property for forming a gentle slope that gradually decreases.
In the bookbinding structure for files according to claim 2 of the present invention, a soft thermoplastic resin sheet bent in a substantially arcuate shape is interposed between the front cover and the back cover. The file binding structure according to claim 1, wherein the bookbinding structure is configured to be bridged between the files.
The bookbinding structure for files according to claim 3 of the present invention is the file according to claim 1 or 2, wherein the intervening material includes an arcuate portion to which the binding body is bonded and a connecting portion to be bonded to the cover. This is a kind of bookbinding structure.
In the bookbinding structure for files according to claim 4 of the present invention, the intervening material is formed by a connecting portion spanned between the front cover side end portion and the back cover side end portion of the bow-shaped portion to which the binding body is bonded. The bookbinding structure for files according to any one of claims 1 to 3, which is adhered to the back of the cover.
In the bookbinding structure for files according to claim 5 of the present invention, the intervening material is a flat or curved sheet that is stretched between the front cover side end and the back cover side end of the arcuate portion. The bookbinding structure for files according to any one of claims 1 to 4, wherein the file is bonded to a back portion of a cover by a connecting portion formed in (5).
The file binding structure according to claim 6 of the present invention is the file binding structure according to any one of claims 1 to 5, wherein the intervening material is formed of a tubular thermoplastic synthetic resin sheet.
The bookbinding structure of the files according to claim 7 of the present invention is such that the intervening material is +, the binding member is connected to the front cover side end portion and the back cover side end portion of the arcuate portion to which the binding body is bonded, and protrudes from the arcuate portion. The bookbinding structure for files according to any one of claims 1 to 4, wherein the file is bonded to a cover by a connected piece.
The bookbinding structure of the files according to claim 8 of the present invention is configured such that the region connected to the cover material and the region connected to the binding material are made of a material that is thermally welded to the intermediate material. A file binding structure according to any one of claims 1 to 6.

The bookbinding structure of the files according to the present invention is a structure in which a binding body in which a large number of binding sheets are overlapped is covered on a relatively hard cover, with the overlapping end surface of the binding body and the inner surface of the cover facing each other, In addition, in order to connect the cover and the binding body, a sheet-like interposition material made of a thermoplastic resin having a softness and flexibility that is softer than the cover for binding the binding body and lowering toward the left and right as the center is formed. The intermediate material is bonded to the binding body and the inner surface of the cover, and when the cover is opened, the center of the surface to which the intermediate material is bonded is separated from the back of the cover and the center is higher on the front cover side and back cover side. Since it is configured to have a shape-retaining property for forming a gentle slope that gradually decreases, it is easy to open between the binding bodies, particularly near the portion connected to the cover, and to easily crawl.
According to the invention of claim 2, the interposing material spans the soft thermoplastic resin sheet bent in a substantially bow shape between the front cover and the back cover of the cover in order to connect the binding bodies. Therefore, when the binding sheet is rolled, it can be lightly wound along the opening angle of the binding sheet.
According to invention of Claim 3, since the interposition material is provided with the arcuate part which adhere | attaches a binding body, and the connection part adhere | attached on a cover, a binding body is attached to a bow part, and a cover is attached to a connection part. When the binding sheet bonded to the arcuate portion is rolled up, the folding sheet can be lightly wound along the open angle.
According to the invention of claim 4, the interposition material is bonded to the back portion of the cover by the connecting portion that is bridged between the front cover side end portion and the back cover side end portion of the bow-shaped portion to which the binding body is bonded. Therefore, it is easy to bond the binding body to the arcuate part and the cover to the connecting part, and when the binding sheet bonded to the arcuate part is rolled, it is gently wound along the opening angle of the sheeting sheet. Can do.
According to the invention of claim 5, the interposition material is a connecting portion formed of a sheet having a flat surface or a curved surface, which is bridged between the front cover side end portion and the back cover side end portion of the arcuate portion. Because it is bonded to the back of the cover, it is easy to bond the binding body to the arcuate part and the cover to the connection part, and the binding sheet is opened when the binding sheet bonded to the arcuate part is rolled. You can hit lightly along the angle.
According to the invention of claim 6, since the interposition material is made of a tube-shaped thermoplastic synthetic resin sheet, the interposition material is interposed between the binding body and the cover, and it is easy to bind the two by heat welding.
According to the invention of claim 7, the interposition material is connected to the front cover side end portion and the back cover side end portion of the arcuate part to which the binding body is bonded, and is connected to the cover sheet by the protruding piece formed from the arcuate part. Therefore, it can be easily formed from a flat sheet or the like, and the interposition material is easily bonded to the cover by the connecting piece.
According to the eighth aspect of the present invention, the region connected to the interposition material of the cover and the region connected to the interposition material of the binding body are made of a material thermally welded to the interposition material. It is easy to make a book by interposing between the body and the cover and thermally welding them.

  The above-described object, other objects, features, and advantages of the present invention will become more apparent from the following description of the best mode for carrying out the invention with reference to the drawings.

FIG. 1 is a perspective view of a file having a bookbinding structure according to an embodiment of the present invention. FIG. 2A is a bottom view of the file shown in FIG. 1, and FIG. FIG. 2 is a bottom vertical view center vertical sectional view of the file shown in FIG. 1. FIG. 3 is a perspective view illustrating a state in which a cover is opened. 4A and 4B are diagrams showing the intervening material of the file shown in FIG. 1, wherein FIG. 4A is a perspective view and FIG. 4B is a cross-sectional view. FIG. 5 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 1, FIG. 6 is a cross-sectional view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 1, and FIG. It is a figure which shows the state before adhering a cover material and an interposition material, (B) is a figure which shows a state when adhering a cover and an interposition material, (C) adhere | attaches a cover and an interposition material It is a figure which shows the state after having performed. FIG. 7 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 1, and is a diagram showing a state before the interposition material and the binding body are bonded together. FIG. 8 is an illustrative sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 1, and shows a state when the interposition material and the binding body are bonded. FIG. 9 is a cross-sectional view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. 1, and is a diagram illustrating a state after the interposition material and the binding body are bonded together. FIG. 10 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 1, and is a diagram showing a completed state by bonding the interposition material and the binding body.
The file binding structure 10 according to the present invention is a structure in which a binding body 14 in which a large number of transparent binding sheets 12 having pockets are overlapped is covered with a relatively hard cover 16.

A file binding structure 10 according to the present invention joins a binding body 14 formed by stacking a large number of rectangular binding sheets 12 in a plan view made of a thermoplastic resin and an inner surface of a back portion 20 made of a thermoplastic resin of a cover 16. The binding sheet 12 is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene, so-called clear pockets. . It is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene.
The front cover 16 is formed by connecting a rectangular front cover 22 and a rectangular back cover 24 to a rectangular back portion 20 with a bent portion interposed therebetween.

  The bookbinding structure 10 for files is formed so that the overlapping end surface of the binding body 14 and the inner surface of the back portion 20 of the cover 16 face each other, and the cover 16 and the binding body 14 are connected between the cover 18 and the binding body 14. Further, a sheet-like interposition material 18 made of a thermoplastic resin that is softer and more flexible than the front cover 16 and that has a high center and lowers as it goes to the left and right is interposed, and the binding material 14 and the back portion of the cover 16 are interposed by the interposition material 18. The inner surface is bonded and connected.

In order to connect the binding body 14, the interposition material 18 is a saddle type in which an arcuate portion bent into an arch shape having a substantially semicircular or elliptical cross section is connected to both ends of the planar portion. A tube-shaped soft thermoplastic resin sheet is formed so as to be bridged between the front cover 22 and the back cover 24 of the cover 16, and is formed in a semicircular or elliptical substantially arcuate shape to which the binding body 14 is bonded. A curved arcuate portion 30 and a connecting portion 32 bonded to the cover 16 are provided.
The length of the back portion 20 of the cover 16 in the height direction (X1 direction) of the interposing material 18 is slightly shorter than the length of the back portion 20 of the cover 16 in the height direction (X1 direction) and the height of the binding body 14. It has a length slightly longer than the length (long side length) in the direction (X2 direction) (see FIG. 2B).
When the front cover 16 is opened, the interposition material 18 has a central top portion 38 of the surface to which the binding body 14 is bonded away from the back portion 20 of the front cover 16 so that the center is high, and the front cover side end 34 and the back cover It has a shape retaining property for forming a gentle slope that becomes lower as it reaches the side end portion 36.

The interposition material 18 is bonded to the inner side of the back portion 20 of the cover 16 by a connecting portion 32 spanned between the front cover side end 34 and the back cover side end 36 of the arcuate portion 30.
The connecting portion 32 of the interposition material 18 is formed of a planar sheet that is stretched between the front cover side end portion 34 and the back cover side end portion 36 of the arcuate portion 30.
The intervening material 18 is made of a thermoplastic synthetic resin sheet such as a so-called cross-sectional tube-shaped polypropylene.

Next, the bookbinding method of the bookbinding structure 10 for files according to the present invention will be described.
First, a method for bonding the interposition material 18 to the cover 16 will be described.
First, an interposer material 18A made of a thermoplastic synthetic resin sheet such as a so-called cross-section tubular tube-shaped polypropylene to be used for the interposer 18 is prepared.
The intervening material 18A has a length slightly shorter than the length in the height direction of the back portion 20 of the cover 16 and slightly longer than the length in the height direction of the binding body 14, and the binding body 14 and the back portion 20 are unnecessary. It is configured not to be welded at any part.
Then, on the lower surface of the portion corresponding to the connecting portion 32, that is, the surface bonded to the inside of the back portion 20 of the cover 16, a protruding strip 32 a having an elongated semicircular cross section is provided continuously in the length direction. .
The protrusions 32a are bonded to an inner surface of the back portion 20 of the cover 16 by bonding an outer surface of the intermediate material 18A and an inner surface of the back portion 20 of the cover 16 to the inner surface of the back portion 20 of the cover 16 with the ultrasonic horn 100 or the like. At this time, it is formed in order to melt the ridge 32a and firmly bond it to the inner surface of the back portion 20 of the cover 16.

The surface of the connecting portion 32 of the interposing material material 18A (the surface on which the ridges 32a are formed) is brought into contact with the inner surface of the back portion 20 of the cover 16, and the outer surface of the interposing material material 18A, ie, the interposing material material 18A is brought into contact. For example, the ultrasonic horn 100 welds the inner surface of the back portion 20 of the cover 16 to the surface of the connecting portion 32 of the interposition material 18A and the protrusions 32a. Processing is performed, and the inner surface welding region of the back portion 20 of the cover 16 is melted and bonded to the outer surface of the connecting portion 32 of the interposing material material 18A and the bonding region of the protrusion 32a.
At this time, a metal mold holding plate 130 is used that is inserted into the hollow portion of the interposing material material 18A, maintains a certain shape of the interposing material material 18A, and prevents heat from being transmitted.

Next, a method of welding and connecting the binding body 14 to the outer surface of the arcuate portion 30 of the interposing material material 18A will be described.
The bookbinding apparatus 110 used for the method of welding and connecting the binding body 14 to the outer surface of the arcuate portion 30 of the intervening material 18A includes a binding body holding mechanism 112 that holds the binding body 14 in which a large number of binding sheets 12 are superposed. A cover holding mechanism 114 for holding the cover 16, a heating element 116, and a cylinder mechanism (not shown) that allows the heating element 116 to be interposed or removed between the binding body 14 and the cover 16. Yes.

  Further, at this time, a metal mold holding plate 130 may be used that is inserted into the hollow portion of the interposing material material 18A, maintains a certain shape of the interposing material material 18A, and prevents heat from being transmitted. Good.

  The binding body holding mechanism 112 includes an upright holding body 120 fixed to the table 118, and an upright holding body 122 that is movable on the table 118 by a driving means such as a screw or a piston (not shown). The binding body 14 is clamped by the upright holding body 122.

  Further, the cover holding mechanism 114 is configured to be attachable with the inner surface of the back portion 20 of the cover 16 facing downward, and is configured to be movable up and down by lifting means (not shown).

  The heating element 116 is a plate having a sheathed heater or the like built therein, but the heating element 116 is not limited to this, and various means capable of releasing heat energy are conceivable.

Next, a method for binding a bookbinding structure of files using the bookbinding apparatus 110 will be described.
First, a large number of binding sheets 12 are superposed, the overlapping end surfaces thereof are clamped by the upright holding body 120 and the upright holding body 122, and the inner surface of the back portion 20 of the cover 16 is turned down by the cover holding mechanism 114. The cover 16 is held and the cover holding mechanism 114 is lowered so that the end surface of the binding body 14 and the inner surface of the arcuate portion 30 of the interposition material 18 are opposed to each other, and the heating element 116 can be interposed therebetween. To approach.
The metal holding plate 130 is inserted into the hollow portion of the interposing material material 18A so as to maintain a certain shape, and the heating element 116 is interposed between the connecting portion 32 of the interposing material material 18A and the binding body 14. Then, the connecting portion 32 and the ridge 32a of the interposition material 18A and the overlapping end surface of the binding body 14 are melted at the same time.

Since the polypropylene constituting the interposing material 18A has a thickness of 0.3 to 0.4 mm and its melting temperature is set to 130 to 140 ° C., it corresponds to the melting temperature of about 170 to 180 ° C. The heating element 116 is used for melting in about 4 to 5 seconds.
Then, the heating element 116 is pulled out, the interposition material 18A is adhered to the binding body 14 to connect them, and the cover 16, the interposition material 18 and the binding body 14 are connected to each other, as shown in FIG. Complete the structure.

  In this way, the bookbinding cost can be reduced because the bookbinding can be performed by a simple method using the interposition material 18.

  The present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made within the scope of the present invention, as will be described later.

FIG. 11 is an illustrative view of a file having a bookbinding structure according to another embodiment of the present invention, where (A) is a bottom view illustrative view, and (B) is a bottom longitudinal view middle longitudinal section illustrative view. It is. FIGS. 12A and 12B are diagrams showing the intervening material in the file shown in FIG. 11, where FIG. 12A is a perspective view and FIG. 12B is a cross-sectional view. FIG. 13 is a perspective view illustrating a method for processing a welded region of an intervening material on a cover. FIG. 14 is an illustrative view showing a method for processing a welded region of an intervening material on a cover sheet, (A) is a perspective illustrative view, and (B) is a transverse sectional illustrative view. FIG. 15 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. 16 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 1, (A) is a diagram showing a state before bonding the cover and the interposition material, and (B) is the cover. It is a figure which shows a state when adhering and an interposition material, (C) is a figure which shows the state after adhere | attaching a cover and an interposition material.
Another bookbinding structure 210 according to the present invention is a structure in which a binding body 214 in which a large number of transparent binding sheets 212 having pockets are superimposed is attached to a relatively hard cover 216.

The file binding structure 210 according to the present invention joins a binding body 214 formed by superposing a large number of rectangular binding sheets 212 in plan view made of thermoplastic resin and an inner surface of a back portion 220 made of thermoplastic resin on a cover 216. The binding sheet 212 is a sheet-like material having pockets for albums, business card holders, or postcard arrangements made of thermoplastic resin such as polypropylene, so-called clear pockets. .
The front cover 216 is formed by connecting a rectangular front cover 222 and a rectangular back cover 224 to a rectangular back portion 220 with a bent portion interposed therebetween.

  The bookbinding structure 210 of the files is formed so that the overlapping end surface of the binding body 214 and the inner surface of the back portion 220 of the cover 216 face each other, and the cover 216 and the binding body 214 are connected between the cover 216 and the binding body 214. Further, a sheet-like interposition material 218 made of a thermoplastic resin that is softer and more flexible than the front cover 216 and that is higher in the center and lowers toward the left and right is interposed, and the binding body 214 and the back portion of the cover 216 are interposed by the interposition material 218. The inner surface 220 is connected by bonding.

In order to connect the binding body 214, the interposition material 218 is a saddle type in which an arcuate portion bent into an arch shape having a substantially semicircular or elliptical cross section is continuously formed at both ends of the planar portion. A semi-circular or elliptical arcuate portion 230 that is constructed so that a tube-like soft thermoplastic resin sheet is bridged between the front cover 222 and the back cover 224 of the cover 216, and to which the binding body 214 is bonded, and the cover And a connecting portion 232 bonded to the H.216.
The length of the back portion 220 of the cover 216 in the height direction (X1 direction) of the interposition material 218 is slightly shorter than the length of the back portion 220 of the cover 216 in the height direction (X1 direction) and the height of the binding body 214. A length slightly longer than the length (long side length) in the direction (X2 direction) is provided (see FIG. 11B).
When the front cover 216 is opened, the interposition material 218 has a central top portion 238 on the surface to which the binding body 214 is bonded away from the back portion 220 of the front cover 216 and is higher in the center, and the front cover side end 234 and the back cover. It has a shape retaining property for forming a gentle slope that becomes lower as it reaches the side end 236.

The interposition material 218 is bonded to the inner side of the back portion 220 of the cover 216 by a connecting portion 232 that spans between the front cover side end 234 and the back cover side end 236 of the arcuate portion 230.
The connecting portion 232 of the interposition material 218 is formed of a planar sheet that is bridged between the front cover side end portion 234 and the back cover side end portion 236 of the arcuate portion 230.
The intervening material 218 is made of a thermoplastic synthetic resin sheet such as a so-called cross-section tubular tube-shaped polypropylene.

Next, a bookbinding method of the bookbinding structure 210 for files according to the present invention will be described.
First, a method for bonding the interposition material 218 to the cover 216 will be described.
First, an interstitial material 218 </ b> A made of a thermoplastic synthetic resin sheet such as a so-called cross-section tubular tube-shaped polypropylene to be used for the interstitial material 218 is prepared.
The intervening material 218A has a length slightly shorter than the length in the height direction of the back portion 220 of the cover 216 and slightly longer than the length in the height direction of the binding body 214, and the binding body 214 and the back portion 220 are unnecessary. It is configured not to be welded at any part.
Then, a plurality of concave and convex surfaces subjected to a process of partially melting the surface with the heat melting machine 140 continuously in the length direction on the inner surface of the back portion 220 of the cover 216, that is, the surface to which the interposition material 218 is bonded. The surface processed portion 220a and the surface processed portion 220b are intermittently formed. The surface processed parts 220a and 220b are formed in parallel in the vicinity of the front cover 222 and in the vicinity of the back cover 224 (see FIG. 14).
The surface processed portion 220a and the surface processed portion 220b are provided with an intermediate material 218A described later on the inner surface of the back portion 220 of the cover 216, the outer surface of the intermediate material 218A and the inner surface of the back portion 220 of the cover 216 by the ultrasonic horn 100 or the like. Is formed so that the surface processed portion 220a and the surface processed portion 220b are melted and firmly bonded to the inner surface of the back portion 220 of the cover 216 without causing thermal contraction or the like.

The surface of the connecting portion 232 of the intermediate material 218A is brought into contact with the inner surface of the back portion 220 of the cover 216, and the outer surface of the intermediate material 218A, that is, the surface opposite to the surface where the intermediate material 218A is in contact, For example, a welding process is performed on the inner surface of the back portion 220 of the cover 216 and the welding region where the surface processed portion 220 b and the surface of the connecting portion 232 of the interposition material 218 </ b> A are brought into contact with each other by the ultrasonic horn 100. The inner surface welding region and the bonding region on the outer surface of the connecting portion 232 of the intervening material 218A are melted and bonded.
At this time, a metal mold holding plate 130 is used that is inserted into the hollow portion of the interposed material 218A to maintain a certain shape of the interposed material 218A and prevent heat from being transmitted.

Next, a method of welding and connecting the binding body 214 to the outer surface of the arcuate portion 230 of the interposition material 218A will be described.
The bookbinding apparatus 110 used for the method of welding and connecting the binding body 214 to the outer surface of the arcuate portion 230 of the intervening material 218A includes a binding body holding mechanism 112 that holds a binding body 214 in which a large number of binding sheets 212 are superposed. A cover holding mechanism 114 for holding the cover 216, a heating element 116, and a cylinder mechanism (not shown) that allows the heating element 116 to be interposed or removed between the binding body 214 and the cover 216. Yes.

  Further, at this time, a metal mold holding plate 130 may be used that is inserted into the hollow portion of the intervening material 218A, maintains a certain shape of the intervening material 218A, and prevents heat from being transmitted. Good.

  The binding body holding mechanism 112 includes an upright holding body 120 fixed to the table 118, and an upright holding body 122 that is movable on the table 118 by a driving means such as a screw or a piston (not shown). The binding body 214 is clamped by the upright holding body 122.

  The cover holding mechanism 114 is configured to be attachable with the inner surface of the back portion 220 of the cover 216 facing downward, and is configured to be movable up and down by lifting means (not shown).

  The heating element 116 is a plate having a sheathed heater or the like built therein, but the heating element 116 is not limited to this, and various means capable of releasing heat energy are conceivable.

Next, a method for binding a bookbinding structure of files using the bookbinding apparatus 110 will be described.
First, a large number of binding sheets 212 are superposed, the overlapping end surfaces thereof are clamped by the upright holding body 120 and the upright holding body 122, and the inner surface of the back portion 220 of the cover 216 is placed downward by the cover holding mechanism 114 The cover 216 is held and the cover holding mechanism 114 is lowered so that the end surface of the binding body 214 and the inner surface of the arcuate portion 230 of the interposition material 218 face each other, and the heating element 116 can be interposed therebetween. To approach.
Then, the metal holding plate 130 is inserted into the hollow portion of the interposition material 218A so as to maintain a certain shape, and the heating element 116 is interposed between the connecting portion 232 of the interposition material 218A and the binding body 214. The connecting portion 232 of the interposition material 218A and the overlapping end surface of the binding body 214 are melted at the same time.

Since the polypropylene constituting the interstitial material 218A is 0.3 to 0.4 mm thick and its melting temperature is set to 130 to 140 ° C, it corresponds to the melting temperature of about 170 to 180 ° C. The heating element 116 is used for melting in about 4 to 5 seconds.
After that, the heating element 116 is pulled out, the interposition material 218A is adhered to the binding body 214 to connect them, and the cover 216, the interposition material 218, and the binding body 214 are connected to each other, as shown in FIG. Complete the structure.

FIG. 17 is a perspective view of a file having a bookbinding structure according to another embodiment of the present invention. FIG. 18A is a bottom view of the file shown in FIG. FIG. 17 is a bottom vertical solution center vertical cross-section solution view of the file shown in FIG. 17, and FIG. 19 is a perspective view solution view with the cover open. 20A and 20B are diagrams showing the interposing material of the file shown in FIG. 17, in which FIG. 20A is a perspective view and FIG. 20B is a cross-sectional view. FIG. 21 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. FIGS. 22A and 22B are cross-sectional illustrations showing a method of processing the cover of the file shown in FIG. 17, in which FIG. 22A is a diagram showing a state before processing, and FIG. FIGS. 23A and 23B are cross-sectional illustrations showing a method of processing the cover of the file shown in FIG. 17, where FIG. 23A is a diagram showing the time of processing, and FIG. 23B is a diagram showing a completed state.
The file binding structure 310 according to the present invention is a structure in which a binding body 314 in which a large number of transparent binding sheets 312 having pockets are overlapped is covered with a relatively hard cover 316.

The file binding structure 310 according to the present invention joins a binding body 314 formed by superposing a large number of rectangular binding sheets 312 in plan view made of thermoplastic resin and an inner surface of a back portion 320 made of thermoplastic resin on a cover 316. The binding sheet 312 is a sheet-like material having pockets for albums, business card holders, or postcard arrangements made of thermoplastic resin such as polypropylene, so-called clear pockets. . It is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene.
The front cover 316 is formed by connecting a rectangular front cover 322 and a rectangular back cover 324 to a rectangular round back 320 with a bent portion interposed therebetween.

  The bookbinding structure 310 of the files is formed so that the overlapping end surface of the binding body 314 and the inner surface of the back portion 320 of the cover sheet 316 face each other, and the cover sheet 316 and the binding body 314 are connected between the cover sheet 316 and the binding body 314. Further, a sheet-like interposition material 318 that is made of a thermoplastic resin that is softer and more flexible than the cover sheet 316 and that has a high center and decreases as it goes to the left and right is interposed, and the binding member 314 and the back portion of the cover sheet 316 are interposed by the interposition material 318. 320 is adhered to the inner surface.

In order to connect the binding body 314, the interposition material 318 spans between a front cover 322 of the cover 316 and a back cover 324 with a soft thermoplastic resin sheet having a substantially cylindrical shape or a so-called substantially egg-shaped cross section. The arcuate portion 330 is bent in a semicircular or elliptical substantially arcuate shape to which the binding body 314 is bonded, and a connecting portion 332 is bonded to the cover 316.
The interposition material 318 has a length in the height direction (X1 direction) of the back portion 320 of the cover 316 slightly shorter than a length in the height direction (X1 direction) of the back portion 320 of the cover 316 and the height of the binding body 314. A length slightly longer than the length (long side length) in the direction (X2 direction) is provided (see FIG. 18B).
When the cover 316 is opened, the interposition material 318 has a central top portion 338 of the surface to which the binding body 314 is bonded away from the back portion 320 of the cover 316 and has a high center, and the front cover side end 334 and the back cover. It is configured so as to have a shape-retaining property for forming a gentle slope that becomes lower as it reaches the side end portion 336.

The interposition material 318 is adhered to the inner side of the back portion 320 of the cover 316 by a connecting portion 332 that spans between the front cover side end 334 and the back cover side end 336 of the arcuate portion 330.
The connecting portion 332 of the interposition material 318 is formed of a semicircular or elliptical sheet extending between the front cover side end portion 334 and the back cover side end portion 336 of the arcuate portion 330, and has an arcuate shape. The portion 330 has vertical symmetry that is inverted about a horizontal line connecting the front cover side end 334 and the back cover side end 336.
The interposition material 318 is made of a thermoplastic synthetic resin sheet such as polypropylene having a substantially egg-shaped cross section.

Next, a bookbinding method of the bookbinding structure 310 for files according to the present invention will be described.
First, a method of bonding the interposition material 318 to the cover 316 will be described.
First, an interstitial material 318A made of a thermoplastic synthetic resin sheet such as polypropylene having a hollow cylindrical shape or a so-called cross-section egg-shaped tube shape to be used for the interstitial material 318 is prepared.
The interposition material 318A has a length slightly shorter than the length in the height direction of the back portion 320 of the cover 316 and slightly longer than the length in the height direction of the binding body 314, and the binding body 314 and the back portion 320 are unnecessary. It is configured not to be welded at any part.
A plurality of concave and convex surfaces subjected to a process of partially melting the surface with the heat melting machine 140 continuously in the length direction on the inner surface of the back portion 320 of the cover 316, that is, the surface to which the interposition material 318 is bonded. The surface processed portion 320a and the surface processed portion 320b are intermittently formed. The surface processed portion 320a and the surface processed portion 320b are formed in parallel in the vicinity of the front cover 322 and in the vicinity of the back cover 324 (see FIG. 21).
The surface processed portion 320a and the surface processed portion 320b are arranged on the inner surface of the back portion 320 of the cover 316 by using an ultrasonic horn 100 or the like on the outer surface of the intermediate material 318A and the inner surface of the back portion 320 of the cover 316. When welding and bonding, the surface processed portion 320a and the surface processed portion 320b are melted and firmly bonded to the inner surface of the back portion 320 of the cover 316 without causing thermal contraction or the like.

The surface of the connecting portion 332 of the interposition material 318A is brought into contact with the inner surface of the back portion 320 of the cover 316, and the outer surface of the interposition material 318A, that is, the surface opposite to the surface where the interposition material 318A is in contact, For example, the inner surface of the back portion 320 of the cover 316, the surface processed portion 220a, the surface processed portion 320b, and the surface of the connecting portion 332 of the interposition material 318A are brought into contact with each other by the ultrasonic horn 100. The inner surface welding region of the back portion 320 of the cover 316 and the bonding region of the outer surface of the connecting portion 332 of the interposition material 318A are melted and bonded.
At this time, a metal mold holding plate 130 is used that is inserted into the hollow portion of the interposing material material 318A, maintains a certain shape of the interposing material material 318A, and prevents heat from being transmitted.

Next, a method of welding and connecting the binding body 314 to the outer surface of the arcuate portion 330 of the interposition material 318A will be described.
The bookbinding apparatus 110 used for the method of welding and connecting the binding body 314 to the outer surface of the arcuate portion 330 of the intervening material 318A has a large number of binding sheets 312 in the same manner as the bookbinding structure 10 and the bookbinding structure 210. A binding body holding mechanism 112 for holding the superposed binding body 314, a cover holding mechanism 114 for holding the cover 316, a heating element 116, and the heating element 116 interposed between the binding body 314 and the cover 316 or And a cylinder mechanism (not shown) that enables extraction.

  Further, at this time, a metal mold holding plate 130 may be used that is inserted into the hollow portion of the interstitial material 318A, maintains a certain shape of the interstitial material 318A, and prevents heat from being transmitted. Good.

  The binding body holding mechanism 112 includes an upright holding body 120 fixed to the table 118, and an upright holding body 122 that is movable on the table 118 by a driving means such as a screw or a piston (not shown). The binding body 314 is clamped by the upright holding body 122.

  Then, a cover forming mechanism 150 for forming a round back in which the back portion 320 of the cover 316 bulges outward is provided. The cover molding mechanism 150 sandwiches the back 320 of the cover 316 with the front cover 322 and the back cover 324, presses the back 320 from the outside of the front cover 322 and the outside of the back cover 324, and is heated by the heating element 116. The back part 320 is bulged and formed into a round back in a state where there is residual heat in the back part 320, and is configured to be movable toward and away from the cover 316 by a reciprocating means (not shown).

The heating element 116 has a block shape in which a sheathed heater or the like is incorporated, but the heating element 116 is not limited to this, and various means capable of releasing heat energy are conceivable.
Further, when the remaining heat is insufficient, the back 320 may be heated by incorporating a sheathed heater or the like in the cover forming mechanism 150.

Next, a method of binding the bookbinding structure 610 using the bookbinding apparatus 110 will be described.
First, a large number of binding sheets 312 are superposed, and the overlapping end surfaces are clamped by the upright holding body 120 and the upright holding body 122, and the inner surface of the back portion 320 of the cover 316 is placed downward by the cover holding mechanism 114. The cover 316 is held and the cover holding mechanism 114 is lowered so that the end surface of the binding body 314 and the inner surface of the back portion 320 of the cover 316 are opposed to each other and the heating element 116 is interposed therebetween. Let
Then, the metal mold plate 130 is inserted into the hollow portion of the interposition material 318A so as to maintain a certain shape, and the heating element 116 is interposed between the connecting portion 332 of the interposition material 318A and the binding body 314. The connecting portion 332 of the interposition material 318A and the overlapping end surface of the binding body 14 are melted at the same time.

Since the polypropylene constituting the interposition material 318A has a thickness of 0.3 to 0.4 mm and its melting temperature is set to 130 to 140 ° C, it corresponds to the melting temperature of about 170 to 180 ° C. The heating element 116 is used for melting in about 4 to 5 seconds.
After that, the heating element 116 is pulled out, the interposition material 318 </ b> A is adhered to the binding body 314 to connect them, and the cover 316, the interposition material 318, and the binding body 314 are connected.

  Next, as shown in FIGS. 22 and 23, the back portion 320 is sandwiched between the front cover 322 and the back cover 324 by the cover forming mechanism 150, and the back portion 320 is sandwiched from the outside of the front cover 322 and the outside of the back cover 324. The back part 320 swelled while being pressed is formed into a round back to complete a bookbinding structure as shown in FIG.

FIG. 24 is an illustrative view of a file having a bookbinding structure according to another embodiment of the present invention, where (A) is a bottom view illustrative view, and (B) is a bottom longitudinal view middle longitudinal sectional view illustrative view. It is. FIG. 25 is a perspective view showing a state in which the cover of the file shown in FIG. 24 is opened. 26A and 26B are views showing the interposing material of the file shown in FIG. 24, where FIG. 26A is a perspective view and FIG. 26B is a cross-sectional view. 27 is a perspective view showing a bookbinding method of the bookbinding structure of the file shown in FIG. FIGS. 28A and 28B are cross-sectional illustrations showing a method of processing the cover of the file shown in FIG. 24. FIG. 28A is a diagram immediately before processing, and FIG.
The file binding structure 410 according to the present invention is a structure in which a binding body 414 obtained by superposing a large number of transparent binding sheets 412 having pockets is attached to a relatively hard cover 416.

The file binding structure 410 according to the present invention joins a binding body 414 formed by superposing a large number of rectangular binding sheets 412 in plan view made of thermoplastic resin and an inner surface of a back part 420 made of thermoplastic resin on a cover 416. The binding sheet 412 is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene, which are so-called clear pockets. . It is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene.
The front cover 416 is formed by connecting a rectangular back cover 422 and a rectangular back cover 424 to a rectangular round back 420 with a bent portion interposed therebetween.

  The bookbinding structure 410 of the files is formed so that the overlapping end surface of the binding body 414 and the inner surface of the back portion 420 of the cover 416 face each other, and the cover 416 and the binding body 414 are connected between the cover 416 and the binding body 414. Further, a sheet-like interposition material 418 made of a thermoplastic resin that is softer and more flexible than the front cover 416 and that is high in the center and lower as it goes to the left and right is interposed, and the binding body 414 and the back portion of the cover 416 by the interposition material 418 The inner surface 420 is bonded and connected.

The interposition material 418 is configured so that a soft thermoplastic resin sheet bent in a bow shape is bridged between the front cover 422 and the back cover 424 of the cover 416 in order to connect the binding body 414. A semicircular or elliptical arcuate portion 430 to which the body 414 is bonded, and a connecting portion 432 to be bonded to the cover 416 are provided.
The interposition material 418 has a length in the height direction (X1 direction) of the back portion 420 of the cover 416 slightly shorter than a length in the height direction (X1 direction) of the back portion 420 of the cover 416 and the height of the binding body 414. A length slightly longer than the length (long side length) in the direction (X2 direction) is provided (see FIG. 24B).
When the front cover 416 is opened, the interposition material 418 has a central top portion 438 of the surface to which the binding body 414 is bonded away from the back portion 420 of the front cover 416 and is higher in the center, and the front cover side end 434 and the back cover. It has a shape retaining property for forming a gentle slope that becomes lower as it reaches the side end 436.

The interposition material 418 is bonded to the inside of the back portion 420 of the cover 416 by a connecting portion 432 formed on the front cover side end 434 and the back cover side end 436 of the arcuate portion 430.
The connecting portion 432 of the interposition material 418 includes a first connecting piece 432A protruding from the front cover side end 434 of the arcuate portion 430 and a second connecting piece 432B protruding from the back cover side end 436. It is configured.
The interposition material 418 is made of a thermoplastic synthetic resin sheet such as polypropylene having a substantially elliptical cross section.

Next, the bookbinding method of the file bookbinding structure 410 according to the present invention will be described.
First, a method for bonding the interposition material 418 to the cover 416 will be described.
First, as shown in FIG. 26 (A) for use in the interposition material 418, an interposition material 418A made of a thermoplastic synthetic resin sheet such as a flat polypropylene as a whole is prepared.
The interstitial material 418A has a length slightly shorter than the length in the height direction of the back portion 420 of the cover 416 and slightly longer than the length in the height direction of the binding body 414, and the binding body 414 and the back portion 420 are unnecessary. It is configured not to be welded at any part.
A plurality of concave and convex surfaces subjected to a process of partially melting the surface with the heat melting machine 140 continuously in the length direction on the inner surface of the back portion 420 of the cover 416, that is, the surface to which the interposition material 418 is bonded. The surface processed portion 420a and the surface processed portion 420b are intermittently formed. The surface processed portion 420a and the surface processed portion 420b are formed in parallel in the vicinity of the front cover 422 and in the vicinity of the back cover 424 (see FIG. 21).
The surface processed portion 420a and the surface processed portion 420b are arranged such that an intervening material material 418A, which will be described later, is placed on the inner surface of the back portion 420 of the cover 416 by the ultrasonic horn 100 or the like, and the first connecting piece 432A and the second connecting piece 432B. When the outer surface and the inner surface of the back portion 420 of the cover 416 are welded and bonded, the surface processed portion 420a and the surface processed portion 420b are melted and firmly adhered to the inner surface of the back portion 420 of the cover 416 without causing thermal contraction or the like. It is formed for bonding.

The surface of the connecting portion 432 of the interposition material 418A is brought into contact with the inner surface of the back portion 420 of the cover 416, and the outer surface of the interposition material 418A, that is, the surface opposite to the surface where the interposition material 418A is in contact, For example, the inner surface of the back portion 420 of the cover 416, the surface processed portion 420a and the surface processed portion 420b, and the surfaces of the first connecting piece 432A and the second connecting piece 432B of the connecting portion 432 of the interposition material 418A by the ultrasonic horn 100. Welding is performed on the welded regions that are in contact with each other, and the inner surface welded region of the back portion 420 of the cover 416 and the adhesive regions of the outer surfaces of the first connecting piece 432A and the second connecting piece 432B of the connecting portion 432 of the interposition material 418A Is melted and bonded.
At this time, a metal mold holding plate 130 is used that is inserted into the hollow portion of the intervening material 418A, maintains a certain shape of the intervening material 418A, and prevents heat from being transmitted.

Next, a method of welding and connecting the binding body 414 to the outer surface of the arcuate portion 430 of the interposition material 418A will be described.
The bookbinding apparatus 110 used for the method of welding and connecting the binding body 414 to the outer surface of the arcuate portion 430 of the intervening material 418A is the same as the apparatus used for the bookbinding structure 10 and the bookbinding structure 210 of the files. is there.

A method of bookbinding the bookbinding structure 410 using the bookbinding apparatus 110 will be described.
First, a large number of binding sheets 412 are superposed, the overlapping end surfaces thereof are clamped by the upright holding body 120 and the upright holding body 122, and the inner surface of the back portion 420 of the cover 416 is placed downward by the cover holding mechanism 114. Thus, the cover 416 is held, and the cover holding mechanism 114 is lowered so that the end surface of the binding body 414 and the inner surface of the arcuate portion 430 of the interposition material 418 are opposed to each other, and the heating element 116 can be interposed therebetween. To approach.
Then, the metal holding plate 130 is inserted into the hollow portion of the interposition material 418A so as to maintain a certain shape, and the heating element 116 is interposed between the connecting portion 432 of the interposition material 418A and the binding body 414. The connecting portion 432 of the interposition material 418A and the overlapping end surface of the binding body 414 are melted at the same time.

Since the polypropylene constituting the interstitial material 418A is 0.3 to 0.4 mm thick and its melting temperature is set to 130 to 140 ° C, it corresponds to the melting temperature of about 170 to 180 ° C. The heating element 116 is used for melting in about 4 to 5 seconds.
After that, the heating element 116 is pulled out, the interposition material 418A is adhered to the binding body 414, and both are connected, and the cover 416, the interposition material 418, and the binding body 414 are connected.
Next, as shown in FIGS. 28A and 28B, the back portion 420, the front cover 422, and the back cover 424 are sandwiched by the cover forming mechanism 150, and the back portion from the outside of the front cover 422 and the outside of the back cover 424. The back portion 420 swelled while being heated is sandwiched and formed into a round back to complete a bookbinding structure as shown in FIG.

FIG. 29 is an illustrative view of a file having a bookbinding structure according to another embodiment of the present invention, wherein (A) is a bottom view illustrative view, and (B) is a bottom longitudinal view middle longitudinal sectional view It is. 30 is a perspective view illustrating a state in which the cover of the file shown in FIG. 29 is opened. 31 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. FIGS. 32A and 32B are cross-sectional illustrations showing the bookbinding method of the bookbinding structure of the file shown in FIG. 29, in which FIG. It shows the state of bonding. FIG. 33 is an illustrative sectional view showing a method of processing the cover of the file shown in FIG. 29, (A) is a diagram immediately before processing, and (B) is a diagram showing during processing.
The file binding structure 510 according to the present invention is a structure in which a binding body 514 in which a large number of transparent binding sheets 512 having pockets are overlapped is covered with a relatively hard cover 516.

The file bookbinding structure 510 according to the present invention joins a binding body 514 formed by superposing a large number of rectangular binding sheets 512 in plan view made of thermoplastic resin and an inner surface of a back portion 520 made of thermoplastic resin on a cover 516. The binding sheet 512 is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene, so-called clear pockets. . It is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene.
The front cover 516 is formed by connecting a rectangular front cover 522 and a rectangular back cover 524 to a rectangular round back 520 with a bent portion interposed therebetween.

  The bookbinding structure 510 of the files is formed so that the overlapping end surface of the binding body 514 and the inner surface of the back portion 520 of the cover 516 face each other, and the cover 516 and the binding body 514 are connected between the cover 516 and the binding body 514. Further, a sheet-like interposition material 518 that is made of a thermoplastic resin that is softer and more flexible than the cover sheet 516 and that is high in the center and becomes lower as it goes to the left and right is interposed, and the binding body 514 and the back portion of the cover sheet 516 are interposed by the interposition material 518 The inner surface of 520 is bonded.

The interposition material 518 is configured so that a soft thermoplastic resin sheet bent in a bow shape is bridged between the front cover 522 and the back cover 524 of the cover 516 in order to connect the binding bodies 514. A semicircular or elliptical arcuate portion 530 to which the body 514 is bonded, and a connecting portion 532 bonded to the cover 516 are provided.
The interposition material 518 has a length in the height direction (X1 direction) of the back portion 520 of the cover 516 slightly shorter than a length in the height direction (X1 direction) of the back portion 520 of the cover 516 and the height of the binding body 514. It has a length slightly longer than the length (long side length) in the direction (X2 direction) (see FIG. 29B).
When the cover 516 is opened, the interposition material 518 has a central top portion 538 of the surface to which the binding body 514 is bonded away from the back portion 520 of the cover 516 and has a high center, and the front cover side end 534 and the back cover It has a shape retaining property for forming a gentle slope that becomes lower as it reaches the side end portion 536.

The interposition material 518 is bonded to the inside of the back portion 520 of the cover 516 by a connecting portion 532 formed at the front cover side end 534 and the back cover side end 536 of the arcuate portion 530.
The connecting portion 532 of the interposition material 518 includes a first connecting piece 532A protruding from the front cover side end 534 of the arcuate portion 530 and a second connecting piece 232B protruding from the back cover side end 536. It is configured.
The interposition material 518 is made of a thermoplastic synthetic resin sheet such as a so-called substantially elliptical arch-shaped polypropylene.

Next, a bookbinding method of the bookbinding structure 510 for files according to the present invention will be described.
First, a method for bonding the interposition material 518 to the cover 516 will be described.
First, as shown in FIG. 32 (A), an interposition material 518A made of a thermoplastic synthetic resin sheet such as polypropylene having a flat shape as a whole is prepared for use as the interposition material 518.
The interstitial material 518A has a length slightly shorter than the length in the height direction of the back portion 520 of the cover 516 and slightly longer than the length in the height direction of the binding body 514, and the binding body 514 and the back portion 520 are unnecessary. It is configured not to be welded at any part.
Then, the surface of the front cover 522 and the back cover 524 in the vicinity of the back portion 520, that is, the surface to which the interposition material 518 is bonded are continuously melted by the heat melting machine 140 in the length direction. The surface processed portion 520a and the surface processed portion 520b having a plurality of uneven surfaces subjected to the processing are intermittently formed. The surface processed portion 520a and the surface processed portion 520b are formed in parallel in the vicinity of the front cover 522 and in the vicinity of the back cover 524 (see FIG. 31).
The surface processed portion 520a and the surface processed portion 520b are arranged such that an intermediate material 518A, which will be described later, is placed on the inner surface of the back portion 520 of the cover 516 by the ultrasonic horn 100 or the like with the first connecting piece 532A and the second connecting piece 532B of the intermediate material 518A. When the outer surface and the front surface 522 of the front cover 516 and the inner surface near the back portion 520 of the back cover 524 are welded and bonded together, the surface processed portion 520b is melted and heat shrinkage or the like is not caused. 522 and the back cover 524 are formed to adhere firmly to the inner surface of the back cover 524 in the vicinity of the back portion 520.

  The surface of the connecting portion 532 of the intermediate material 518A is brought into contact with the inner surface of the front cover 522 of the cover 16 and the inner surface of the back cover 524 in the vicinity of the back portion 520, and the first connecting piece 532A and the second connecting piece 532B of the intermediate material 518A. For example, the inner surface and surface processing of the front cover 522 of the cover 516 and the back 520 of the back cover 524 in the vicinity of the back surface 520 by the ultrasonic horn 100 from the surface opposite to the surface on which the interposition material 518A is brought into contact. The weld region where the portion 520b and the surface of the connecting portion 532 of the interposition material 518A are in contact with each other is subjected to a welding process, and the inner surface weld region and the intervening material in the vicinity of the front cover 522 of the cover 316 and the back portion 520 of the back cover 524 The material 518A is melted and bonded to the bonding area on the outer surface of the connecting portion 532 of the material 518A.

Next, a method of welding and connecting the binding body 514 to the outer surface of the arcuate portion 530 of the interposing material material 518A will be described.
The bookbinding apparatus 110 used for the method of welding and connecting the binding body 514 to the outer surface of the arcuate portion 530 of the intervening material 518A is the same as the apparatus used in the bookbinding method of the bookbinding structure 10 of the files, and is the binding sheet. A binding body holding mechanism 112 that holds a binding body 514 in which a large number of 512 sheets are superposed, a cover holding mechanism 114 that holds a cover 516, a heating element 116, and the heating element 116 that includes a binding body 514 and a cover 516. A cylinder mechanism (not shown) that can be interposed or pulled out is provided.

  Further, at this time, a metal mold holding plate 130 may be used that is inserted into the hollow portion of the interstitial material 518A, maintains a certain shape of the interstitial material 518A, and prevents heat from being transmitted. Good.

  The binding body holding mechanism 112 includes an upright holding body 120 fixed to the table 118, and an upright holding body 122 that is movable on the table 118 by a driving means such as a screw or a piston (not shown). The binding body 514 is clamped by the upright holding body 122.

  Then, a cover forming mechanism 150 is provided for forming a round back in which the back portion 520 of the cover 516 is bulged outward. The cover forming mechanism 150 sandwiches the back 520 of the cover 516, the front cover 522, and the back cover 524 in the same manner as that used when forming the back 320 of the bookbinding structure 310 of the files. The back part 520 is clamped from the outside and the outside of the back cover part 524, and the back part 520 swelled while being heated is formed into a round back, and can be moved toward and away from the cover by a reciprocating means (not shown). It is configured.

  The cover forming mechanism 150 has a block shape in which a sheathed heater or the like is incorporated. However, the heating element is not limited to this, and various means capable of releasing heat energy are conceivable.

Next, a method for bookbinding the bookbinding structure 510 using the bookbinding apparatus 110 will be described.
First, a large number of the binding sheets 512 are superposed, the overlapping end surfaces thereof are clamped by the upright holding body 120 and the upright holding body 122, and the inner surface of the back portion 520 of the cover 536 is lowered by the cover holding mechanism 114 Therefore, the cover 516 is held and the cover holding mechanism 114 is lowered so that the end surface of the binding body 514 and the inner surface of the arcuate portion 530 of the interposition material 518 are opposed to each other, and the heating element 116 can be interposed therebetween. To approach.
The metal holding plate 130 is inserted into the hollow portion of the interposition material 518A so as to maintain a certain shape, and the heating element 116 is interposed between the connecting portion 532 of the interposition material 518A and the binding body 514. The connecting portion 532 of the interposition material 518A and the overlapping end surface of the binding body 514 are melted at the same time.

Since the polypropylene constituting the interstitial material 518A has a thickness of 0.3 to 0.4 mm and its melting temperature is set to 130 to 140 ° C, it corresponds to the melting temperature of about 170 to 180 ° C. The heating element 116 is used for melting in about 4 to 5 seconds.
Thereafter, the heating element 116 is pulled out, the interposition material material 518A is adhered to the binding body 514, and both are connected, and the cover 516, the interposition material 518, and the binding body 514 are connected.

  Next, as shown in FIGS. 33A and 33B, the back portion 520, the front cover 522, and the back cover 524 are sandwiched by the cover forming mechanism 150, and the back portion 520 from the outside of the front cover 522 and the outside of the back cover 524. 29, the back portion 520 is expanded in a state where there is residual heat in the back portion 520 heated by the heating element 116, and is formed into a round back, thereby completing a bookbinding structure as shown in FIG.

The file having the bookbinding structure according to the embodiment shown in FIG. 29 may be modified.
FIG. 34 is an illustrative view of a modified example of a file having a bookbinding structure according to the embodiment shown in FIG. 29, (A) is a bottom view illustrative view, and (B) is a bottom longitudinal view middle longitudinal sectional view illustrative view. FIG. 35 is a perspective view illustrating a state in which the cover of the file shown in FIG. 34 is opened.
The file binding structure 610 according to the present invention is a structure in which a binding body 614 in which a large number of transparent binding sheets 612 having pockets are stacked is attached to a relatively hard cover 616.

The file binding structure 610 according to the present invention is used when joining a binding body 614 formed by superposing a large number of rectangular binding sheets 612 in a plan view made of a thermoplastic resin and an inner surface of a cover 616 made of a thermoplastic resin. The binding sheet 612 is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene, so-called clear pockets. It is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene.
The front cover 616 is formed by connecting a rectangular back cover 622 and a rectangular back cover 624 to a rectangular back portion 620 sandwiching a bent portion.

  The bookbinding structure 610 of the files is formed so that the overlapping end surface of the binding body 614 and the back surface 620 of the cover 616 are opposed to each other, and the cover 616 and the binding body 614 are connected between the cover 616 and the binding body 614. Further, a sheet-like interposition material 618 that is made of a thermoplastic resin that is softer and more flexible than the cover sheet 616 and that is high in the center and becomes lower as it goes to the left and right is interposed, and the surface of the binding body 614 and the cover sheet 616 is interposed by the interposition material 618. The vicinity of the bent portion of the cover 622 and the inner surface of the back cover 624 near the bent portion are bonded.

The interposition material 618 is configured so that a soft thermoplastic resin sheet bent in a bow shape is bridged between the front cover 622 and the back cover 624 of the front cover 616 in order to connect the binding body 614. A semicircular or elliptical arcuate portion 630 to which the body 614 is bonded and a connecting portion 632 to be bonded to the cover 616 are provided.
The interposition material 618 has a length in the height direction (X1 direction) of the back portion 620 of the cover 616 that is slightly shorter than a length in the height direction (X1 direction) of the back portion 620 of the cover 616 and the height of the binding body 614. It has a length slightly longer than the length (long side length) in the direction (X2 direction) (see FIG. 34).
When the front cover 616 is opened, the interposition material 618 has a central top 638 that is separated from the back 620 of the cover 616 and has a high center, and a front cover side end 634 and a back cover. It is configured so as to have a shape-retaining property for forming a gentle slope that becomes lower as it reaches the side end portion 636.

The interposition material 618 is bonded to the inside of the back portion 620 of the cover 616 by a connecting portion 632 formed at the front cover side end 634 and the back cover side end 636 of the arcuate portion 630.
The connecting portion 632 of the interposition material 618 includes a first connecting piece 632A protruding from the front cover side end 634 of the arcuate portion 630 and a second connecting piece 632B protruding from the back cover side end 636. It is configured.
The interposition material 618 is made of a thermoplastic synthetic resin sheet such as polypropylene having a substantially elliptical arch shape in cross section.

36 is a perspective view of a file having a bookbinding structure according to an embodiment of the present invention. FIG. 37 is a bottom view of the file shown in FIG. 36, and FIG. FIG. 36 is a bottom vertical view center vertical cross sectional view of the file shown in FIG. 36. FIG. 38 is a perspective view illustrating a state in which a cover is opened. FIGS. 39A and 39B are diagrams showing the intervening material in the file shown in FIG. 36. FIG. 39A is a perspective view and FIG. 39B is a cross-sectional view. FIG. 40 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 36, FIG. 41 is a cross-sectional view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 36, and FIG. It is a figure which shows the state before adhering a cover material and an interposition material, (B) is a figure which shows a state when adhering a cover and an interposition material, (C) adhere | attaches a cover and an interposition material It is a figure which shows the state after having performed. FIG. 42 is a cross-sectional view showing the bookbinding method of the bookbinding structure of the file shown in FIG. 36, and shows a state before the interposition material and the binding body are bonded together. FIG. 43 is an illustrative sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 36, and shows a state when the interposition material and the binding body are bonded together. FIG. 44 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 36, and shows a state after the interposition material and the binding body are bonded together. FIG. 45 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 36, and is a view showing a completed state by bonding the interposition material and the binding body.
The file binding structure 710 according to the present invention is a structure in which a binding body 714 obtained by superposing a large number of transparent binding sheets 712 having pockets is attached to a relatively hard cover 716.

The file binding structure 710 according to the present invention joins a binding body 714 formed by superposing a large number of rectangular binding sheets 712 in plan view made of thermoplastic resin and an inner surface of a back portion 720 made of thermoplastic resin on a cover 716. The binding sheet 712 is a sheet-like material having pockets for albums, business card holders, or postcards made of a thermoplastic resin such as polypropylene, so-called clear pockets. . It is a sheet-like material having pockets for albums, business card holders, or postcards made of thermoplastic resin such as polypropylene.
The front cover 716 includes a rectangular back cover 722 and a rectangular back cover 724 connected to a rectangular back portion 720 with a bent portion interposed therebetween.

  The bookbinding structure 710 of the files is formed so that the overlapping end surface of the binding body 714 and the back surface 720 of the cover 716 face each other, and the cover 716 and the binding body 714 are connected between the cover 718 and the binding body 714. Further, a sheet-like interposition material 718 made of a thermoplastic resin that is softer and more elastic than the front cover 716 and having a region facing the inner surface of the front cover 716 is interposed between the binding body 714 and the cover 716 by the interposition material 718. The back part 720 inner surface is bonded and connected.

In order to connect the binding body 714, the interposition material 718 is a tube-shaped tube having a rectangular cross section in which a rising portion having a substantially U-shaped cross section or a substantially U-shaped cross section is connected to both ends of the planar portion. A flexible and elastic thermoplastic resin sheet is constructed so as to be bridged between the front cover 722 and the back cover 724 of the cover 716, and has a substantially U-shaped or substantially U-shaped cross-section to which the binding body 714 is bonded. A binding body adhering portion 730 formed with a raised portion and a connecting portion 732 bonded to the cover 716.
The interposition material 718 has a length in the height direction (X1 direction) of the back portion 720 of the cover 716 that is slightly shorter than a length in the height direction (X1 direction) of the back portion 720 of the cover 716 and the height of the binding body 714. It has a length slightly longer than the length (long side length) in the direction (X2 direction) (see FIG. 37B).
When the front cover 716 is opened, the interposition material 718 has a central top portion 738 on the surface to which the binding body 714 is bonded away from the back portion 720 of the front cover 716 and has a higher center, and the front cover side end 734 and the back cover It is configured to have a shape retaining property for forming a gentle slope that becomes lower as it reaches the side end portion 736.

The interposition material 718 is bonded to the inner side of the back portion 720 of the cover 716 by a connecting portion 732 that spans between the front cover side end portion 734 and the back cover side end portion 736 of the binding body bonding portion 730.
The connecting portion 732 of the interposition material 718 is formed of a planar sheet that is bridged between the front cover side end portion 734 and the back cover side end portion 736 of the binding body bonding portion 730.
The interposition material 718 is made of a thermoplastic synthetic resin sheet such as polypropylene having a so-called rectangular tube shape in cross section.

  When the binding sheet 712 is opened, the interposition material 718 is configured to bend in a region where the opened binding sheet 712 is bonded, and to spread between the opened binding sheet 712 and the adjacent binding sheet 712.

Next, a bookbinding method of the bookbinding structure 710 for files according to the present invention will be described.
First, a method of bonding the interposition material 718 to the cover 716 will be described.
First, an interstitial material 718A made of a thermoplastic synthetic resin sheet such as a so-called rectangular tube-shaped polypropylene to be used for the interstitial material 718 is prepared.
The interstitial material 718A has a length slightly shorter than the length in the height direction of the back portion 720 of the cover 716 and slightly longer than the length in the height direction of the binding body 714, and the binding body 714 and the back portion 720 are unnecessary. It is configured not to be welded at any part.
Further, on the lower surface of the portion corresponding to the connecting portion 732, that is, the surface bonded to the inner side of the back portion 720 of the cover 716, a protruding strip 732a having a semicircular cross-sectional shape continuously extending in the length direction is projected. .
The protrusion 732a is bonded to an inner surface of the back portion 720 of the cover 716 by welding an outer surface of the intermediate material 718A and an inner surface of the back portion 720 of the cover 716 to the inner surface of the back portion 720 of the cover 716 with an ultrasonic horn 100 or the like. At this time, the protrusion 732a is formed to melt and firmly adhere to the inner surface of the back portion 720 of the cover 716.

The surface of the connecting portion 732 of the interposition material 718A (the surface on which the ridges 732a are formed) is brought into contact with the inner surface of the back portion 720 of the cover 716, and the outer surface of the interposition material 718A, that is, the interposition material 718A is brought into contact. From the surface opposite to the opposite surface, for example, the ultrasonic horn 100 welds the inner surface of the back portion 720 of the cover 716 to the surface of the connecting portion 732 of the interposition material 718A and the ridge 732a in contact with each other. Processing is performed, and the inner surface welding region of the back portion 720 of the cover 716 is melted and bonded to the outer surface of the connecting portion 732 of the interposition material 718A and the bonding region of the protrusion 732a.
At this time, a metal mold holding plate 730 is used that is inserted into the hollow portion of the intervening material 718A, maintains a certain shape of the intervening material 718A, and prevents heat from being transmitted.

Next, a method of welding and connecting the binding body 714 to the outer surface of the binding body bonding portion 730 of the interposing material material 718A will be described.
The binding device 110 used in the method of welding and connecting the binding body 714 to the outer surface of the binding body bonding portion 730 of the interposing material 718A has a binding body holding mechanism for holding the binding body 714 in which a large number of binding sheets 712 are superposed. 712, a cover holding mechanism 714 for holding the cover 716, a heating element 116, and a cylinder mechanism (not shown) that allows the heating element 116 to be interposed or withdrawn between the binding body 714 and the cover 716. I have.

  Further, at this time, a metal mold holding plate 730 may be used that is inserted into the hollow portion of the interstitial material 718A, maintains a certain shape of the interstitial material 718A, and prevents heat from being transmitted. Good.

  The binding body holding mechanism 712 includes an upright holding body 120 fixed to the table 718 and an upright holding body 122 movable on the table 718 by a driving means such as a screw or a piston (not shown). The binding body 714 is clamped by the upright holding body 122.

  Further, the cover holding mechanism 714 is configured to be attachable with the inner surface of the back portion 720 of the cover 716 facing downward, and is configured to be movable up and down by lifting means (not shown).

  The heating element 116 is a plate having a sheathed heater or the like built therein, but the heating element 116 is not limited to this, and various means capable of releasing heat energy are conceivable.

Next, a method for binding a bookbinding structure of files using the bookbinding apparatus 110 will be described.
First, a large number of binding sheets 712 are superposed, the overlapping end surfaces thereof are clamped by the upright holding body 120 and the upright holding body 122, and the inner surface of the back portion 720 of the cover 716 is lowered by the cover holding mechanism 714. The cover 716 is held and the cover holding mechanism 714 is lowered so that the end surface of the binding body 714 and the inner surface of the binding body bonding portion 730 of the interposition material 718 are opposed to each other, and the heating element 116 is interposed therebetween. Approach as close as possible.
The metal holding plate 730 is inserted into the hollow portion of the interposition material 718A to maintain a certain shape, and the heating element 116 is interposed between the connecting portion 732 of the interposition material 718A and the binding body 714. The connecting portion 732 and the convex strip 732a of the interposition material 718A and the overlapping end surface of the binding body 714 are melted at the same time.

Since the polypropylene constituting the interstitial material 718A is 0.3 to 0.4 mm thick and its melting temperature is set to 130 to 140 ° C, it corresponds to the melting temperature of about 170 to 180 ° C. The heating element 116 is used for melting in about 4 to 5 seconds.
Then, the heating element 116 is pulled out, the interposition material 718A is bonded to the binding body 714 to connect them, and the cover 716, the interposition material 718, and the binding body 714 are connected to each other as shown in FIG. Complete the structure.

  In this way, bookbinding can be performed by a simple method using the interposition material 718, so that the bookbinding cost can be reduced.

The present invention is not limited to the embodiment described above, and various modifications can be made based on the idea of the present invention.
The binding body 14 may be composed only of the binding sheet 12 or may be one in which a thermoplastic resin film is provided on these overlapping end faces.
Further, the cover 16 may be entirely made of a thermoplastic resin, or only the back part may be made of a thermoplastic resin, and the others may be made of paper.
Moreover, the interposition material 18 should just be a thing in which the connection part was comprised with the thermoplastic resin.
Further, the ridge 32a, the surface processed portion 220a, and the surface processed portion 220b may be properly used according to the material of the cover and the intervening material regardless of the embodiment.

In the embodiment shown in FIG. 36, the interposition material 718 is formed by projecting the protrusions 732a on the interposition material 718A, but the interposition material 718A having no protrusions 732a may be used.
For example, as the ultrasonic horn 100, a protrusion 102 corresponding to the protrusion 732a is formed on the surface facing the cover 716 of the ultrasonic horn 100 shown in FIG. Heat generation may occur intensively, and the cover 716 may be bonded.
Further, a protrusion 132 as shown in FIG. 47 is formed on the metallic mold-holding plate 130, and heat is intensively generated in the protrusion 132 due to the ultrasonic vibration of the ultrasonic horn 100, so that the interposition material 718A and the cover are formed. 716 may be bonded.

It is a perspective view solution figure of the file provided with the bookbinding structure which is one embodiment of this invention. (A) is a bottom view illustration of the file shown in FIG. 1, and (B) is a bottom vertical view center vertical sectional view view of the file shown in FIG. 1. It is a perspective view solution figure of the state which opened the cover of the file shown in FIG. It is a figure which shows the interposition material of the file shown in FIG. 1, (A) is a perspective view solution figure, (B) is a cross-sectional view solution figure. It is a perspective view solution figure which shows the bookbinding method of the bookbinding structure of the file shown in FIG. FIG. 2 is a cross-sectional view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 1, (A) is a diagram illustrating a state before bonding the cover and the interposition material, and (B) is a diagram illustrating the cover and the interposition material; It is a figure which shows a state when adhering, (C) is a figure which shows the state after adhere | attaching a cover and an interposition material. FIG. 2 is a cross-sectional view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 1, illustrating a state before the interposition material and the binding body are bonded together. FIG. 2 is a cross-sectional view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 1, and is a diagram illustrating a state when an interposition material and a binding body are bonded. FIG. 2 is a cross-sectional view illustrating a bookbinding method of the bookbinding structure of the file illustrated in FIG. 1, illustrating a state after the interposition material and the binding body are bonded together. FIG. 2 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 1, and is a diagram showing a completed state by bonding an interposition material and a binding body. It is an illustration figure of the file provided with the bookbinding structure which is another embodiment of this invention, (A) is a bottom view solution figure, (B) is a bottom view solution figure center longitudinal cross-section solution figure. 11A and 11B are views showing the interposition material of the file shown in FIG. 11, where FIG. 11A is a perspective view and FIG. 11B is a cross-sectional view. It is a perspective view solution figure which shows the method of processing the welding area | region of an interposition material on a cover. It is an illustration figure which shows the method of processing the welding area | region of an interposition material on a cover, (A) is a perspective view solution figure, (B) is a cross-sectional view solution figure. 11 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. 11 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 11, (A) is a diagram showing a state before bonding the cover and the interposition material, (B) is a diagram showing the cover and the interposition material. It is a figure which shows the state when adhere | attaching, (C) is a figure which shows the state after adhere | attaching a cover and an interposition material. It is a perspective view solution figure of the file provided with the bookbinding structure which is another embodiment of this invention. (A) is a bottom view illustration of the file shown in FIG. 17, and (B) is a bottom vertical view center vertical sectional view view of the file shown in FIG. FIG. 18 is a perspective view illustrating a state in which a cover of the file illustrated in FIG. 17 is opened. 17A and 17B are views showing the interposing material in the file shown in FIG. 17, in which FIG. 17A is a perspective view and FIG. FIG. 17 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. 17. FIGS. 17A and 17B are cross-sectional illustrations showing a method of processing the cover of the file shown in FIG. 17, wherein FIG. 17A is a diagram showing a state before processing, and FIG. FIGS. 17A and 17B are cross-sectional illustrations showing a method of processing the cover of the file shown in FIG. 17, in which FIG. 17A is a diagram showing a processing time, and FIG. It is an illustration figure of the file provided with the bookbinding structure which is another embodiment of this invention, (A) is a bottom view solution figure, (B) is a bottom view solution figure center longitudinal cross-section solution figure. FIG. 25 is a perspective view illustrating a state in which a cover of the file illustrated in FIG. 24 is opened. 24A and 24B are diagrams showing a method of forming an interposition material with the interposition material in the file shown in FIG. 24. FIG. 24A is a perspective view illustrating the interposition material, and FIG. 24B is a perspective view illustrating the interposition material formed. Yes, (C) is a cross-sectional schematic view of a molded interposer material. 24 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. 24. FIG. 24 is a cross-sectional view illustrating a method of processing the cover of the file illustrated in FIG. 24, (A) is a diagram immediately before processing, and (B) is a diagram illustrating during processing. It is an illustration figure of the file provided with the bookbinding structure which is another embodiment of this invention, (A) is a bottom view solution figure, (B) is a bottom view solution figure center longitudinal cross-section solution figure. FIG. 29 is a perspective view illustrating a state in which a cover of the file illustrated in FIG. 29 is opened. FIG. 29 is a perspective view illustrating a bookbinding method of the bookbinding structure of the file shown in FIG. 29. 29 is a cross-sectional schematic view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 29, (A) shows a state before the interstitial material is bonded to the cover, and (B) shows a state where the interstitial material is bonded to the cover. FIG. 29 is a cross-sectional view illustrating a method of processing the cover of the file shown in FIG. 29, (A) is a diagram immediately before processing, and (B) is a diagram illustrating a processing time. FIG. 29 is an illustrative view of a modified example of a file having a bookbinding structure according to the embodiment shown in FIG. 29, (A) is an illustrative view of the bottom surface, and (B) is an illustrative view of the central longitudinal section of the bottom diagram. FIG. 35 is a perspective view illustrating a state in which a cover of the file shown in FIG. 34 is opened. It is a perspective view solution figure of the file provided with the bookbinding structure which is one embodiment of this invention. (A) is a bottom view solution diagram of the file shown in FIG. 36, and (B) is a bottom vertical solution solution center vertical cross-section solution view of the file shown in FIG. FIG. 36 is a perspective view illustrating a state in which a cover of the file shown in FIG. 36 is opened. 36A and 36B are views showing the interposition material in the file shown in FIG. 36, in which FIG. 36A is a perspective view and FIG. 36 is a perspective view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 36. FIG. 36 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 36, (A) is a diagram showing a state before bonding the cover and the interposition material, and (B) is a diagram showing the cover and the interposition material. It is a figure which shows a state when adhering, (C) is a figure which shows the state after adhere | attaching a cover and an interposition material. FIG. 37 is a cross-sectional view showing a bookbinding method of the bookbinding structure of the file shown in FIG. 36, and shows a state before the interposition material and the binding body are bonded together. FIG. 37 is a cross-sectional view showing the bookbinding method of the bookbinding structure of the file shown in FIG. 36, and shows the state when the interposition material and the binding body are bonded together. FIG. 37 is a cross-sectional view showing the bookbinding method of the bookbinding structure of the file shown in FIG. 36, and shows the state after the interposition material and the binding body are bonded together. FIG. 37 is a cross-sectional view showing the bookbinding method of the bookbinding structure of the file shown in FIG. 36, and shows a completed state by bonding the interposition material and the binding body. FIG. 37 is a cross-sectional view showing a bookbinding method of a bookbinding structure as a modified example of the file shown in FIG. 36, showing a state before the interposition material is bonded to the cover. FIG. 37 is a cross-sectional view showing a bookbinding method of a modification of the file shown in FIG. 36, and shows a state before the interposition material is bonded to the cover.

Explanation of symbols

10, 210, 310, 410, 510, 610, 710 File binding structure 12, 212, 312, 412, 512, 612, 712 Binding sheet 14, 214, 314, 414, 514, 614, 714 Binding body 16, 216, 316, 416, 516, 616, 716 Cover 18, 218, 318, 418, 518, 618, 718 Intervening material 18A, 218A, 318A, 418A, 518A, 618A, 718A Interposing material 20, 220, 320, 420 , 520, 620, 720 Back part 220a, 320a, 420a, 520a, 620a Surface processed part 220b, 320b, 420b, 520b, 620b Surface processed part 22, 222, 322, 422, 522, 622, 722 Cover cover 24, 224 324, 424, 524, 6 4,724 Back cover 30,230,330,430,530,630 Arcuate part 730 Binding body adhesion part 32,232,332,432,532,632,732 Connection part 32a, 732a Projection 432A, 532A, 632A 1st Connecting piece 432B, 532B, 632B Second connecting piece 34, 234, 334, 434, 534, 634, 734 Front cover side edge 36, 236, 336, 436, 536, 636, 736 Back cover side edge 38, 238 , 338, 438, 538, 638, 738 Top 100 Ultrasonic horn 110 Bookbinding device 112 Binding body holding mechanism 114 Covering mechanism 116 Heating element 118 Table 120 Upright holding body 122 Upright holding body 130 Metal mold holding plate 140 Heat melting machine 150 Forming mechanism for cover 160 Column-shaped metal retaining plate

Claims (12)

A structure in which a binding body in which a large number of binding sheets are stacked is attached to a relatively hard cover,
The overlapping end surface of the binding body and the inner surface of the cover are opposed to each other, and in order to connect the cover and the binding body therebetween, the binding body is made of a thermoplastic resin that is softer and more flexible than the cover for winding the binding body. , Interposing a sheet-like interposition material that becomes higher in the middle and lowers to the left and right,
The intervening material is bonded to the binding body and the inner surface of the cover, and when the cover is opened, the center of the surface to which the intervening material is bonded is farther away from the back of the cover and the center is higher and lower as it reaches the front and back cover sides. A bookbinding structure for files, etc., which has a shape retaining property to form a gentle slope.   The interposition material is configured so that a soft thermoplastic resin sheet bent in a substantially bow shape is bridged between a front cover and a back cover in order to connect the binding bodies. Bookbinding structure for the listed files.   The bookbinding structure for files according to claim 1 or 2, wherein the intervening material includes an arcuate portion to which the binding body is bonded and a connecting portion to be bonded to the cover.   The interposition material is adhered to the back portion of the cover by a connecting portion that spans between the front cover side end and the back cover side end of the arcuate portion to which the binding body is bonded. The bookbinding structure of the files described in any   The interposition material was bonded to the back of the cover by a connecting part formed of a flat or curved sheet between the front cover side end and the back cover side end of the arcuate part, The bookbinding structure for files according to any one of claims 1 to 4.   The intervening material is bonded to the cover by connecting pieces formed by protruding from the arcuate portion by connecting the binding member to the front cover side end and the back cover side end of the arcuate portion to which the binding body is bonded. 4. A bookbinding structure for files according to any one of 4; A structure in which a binding body in which a large number of binding sheets are stacked is attached to a relatively hard cover,
It is made of a thermoplastic resin that is softer and more elastic than the cover for turning the binding body so that the overlapping end surface of the binding body and the inner surface of the cover face each other and the cover and the binding body are connected therebetween. , Interposing a sheet-like interposition material facing the inner surface of the cover,
The interposition material is bonded to the binding body and the inner surface of the cover, and when the binding sheet is opened, the opened binding sheet is bent in the bonded region so that the gap between the opened binding sheet and the adjacent binding sheet is widened. A bookbinding structure for files.   The bookbinding structure for files according to claim 7, wherein the interposition material includes a binding body bonding portion to which the binding body is bonded and a connecting portion to be bonded to the cover.   The interposition material is bonded to the back portion of the cover sheet by a connecting portion that is bridged between the front cover side end portion and the back cover side end portion of the binding body bonding portion to which the binding body is bonded. 9. A bookbinding structure for files according to any one of 8;   The interposition material was bonded to the front cover by a connecting piece formed by protruding from the binding body bonding portion by connecting to the front cover side end portion and the back cover side end portion of the binding body bonding portion to which the binding body is bonded, A bookbinding structure for files according to any one of claims 7 to 9.   The file binding structure according to any one of claims 1 to 10, wherein the intervening material is formed of a tubular thermoplastic synthetic resin sheet.   The bookbinding of files according to any one of claims 1 to 11, wherein the region connected to the interposition material of the cover and the region connected to the interposition material of the binding body are made of a material thermally welded to the interposition material. Construction.

Images