JP2001058359A - Production of handbag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noise in a punching process and to enhance the durability of a punching blade by forming the side surface of the edge part of the punching blade for punching the predetermined part of the laminated structure of a filter band on a punching stand into a corrugated shape and forming a hole corresponding to the position and shape of the punching blade to the surface of the punching stand. SOLUTION: In producing a handbag, at first, a long tubular film is continuously fed to a gusset folding process to form M-shaped gusset folds to both edges of the film to obtain a film strip 1. A fixed knife is applied to the fold position of the film strip 1 to separate the folds and the film strip 1 is fed to a bottom part and hand part heat-sealing process and corner bottom fusing parts 18 and hand fixing parts 5 are formed. Next, the film strip 1 is fed to a punching stand 30 and the upper edge of the film strip is punched by the falling of a punching blade 34 to form a punched part 17. At this time, the edge part of the punching blade 34 is formed into a corrugated shape and inserted in the hole groove 35 provided to the punching stand 30 so as not to be brought into direct contact with the punching stand 30 to prevent the generation of noise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a handbag including a step of punching a fold of a film. For more information,
The present invention relates to a method for manufacturing a handbag having a long durability of a punching blade and a simple manufacturing process with low noise.

[0002]

2. Description of the Related Art Conventionally, when manufacturing a handbag using a thermoplastic resin film as a material, a method of gusset folding a long resin film and then punching a double film on a punching table has been commonly used. . The hand portion of most handbags is formed by a punching process of a double or more laminated film.
Initially, in the bag making process using resin film, the punching process of double or more laminated films adopts the method of mechanically punching down the laminated film placed on the punching table with the blade die. I was However, according to this method, the impact sound of the metal blade die hitting the table is loud, the working environment is poor, and the sharpness of the blade of the blade die is reduced in a short time. Workability also decreases. In order to prevent the noise of the initial punching method, a method of heating a cutting die having a relatively dull cutting edge and fusing it by heat has come into common use. However, when a single film is punched out by fusing, no problem occurs,
When more than one laminated film is punched out with a heating blade, the laminated film is punched out but the upper and lower laminated films are welded at the fusing portion. 2. Description of the Related Art Conventionally, when a laminated film is punched by fusing, a fusing prevention agent is applied to the fusing portion of the laminated film in advance, and fusing is performed by a method for preventing complete fusing. In this case, there is a drawback in that the number of complicated steps of applying the anti-fusing agent to a specific portion is increased, and the bag making process is complicated. That is, if the anti-fusing agent is applied over the entire surface, it becomes impossible to weld the side edges of the bag body in the fusing step at the final stage of the bag making step.

[0003]

SUMMARY OF THE INVENTION According to the present invention, there is no noise during the punching process, the durability of the punching blade is good, the production efficiency does not decrease due to the exchange of the blade die, and the punching by the fusing is performed. It is an object of the present invention to provide a method of manufacturing a handbag that does not require a step of applying a fusion preventing agent in a specific portion as in the case.

[0004]

The inventor of the present invention believes that in order to solve the above-mentioned noise, a punching method is required in which the cutting edge of the punching blade does not collide, and two or more laminations on the slit are stacked. We conceived a structure in which the film is cut while the thin blade is inserted into the slit. However, when cutting a laminated film with a normal blade die by this method, the film escapes from the position of the punching blade, and cutting at an accurate position cannot be performed. Therefore, when the shape of the punching blade is viewed from the side and a corrugated shape is used, the film at the cutting location does not escape from the cutting edge, and it has been found that the laminated film can be accurately cut into the shape of the punching blade. Based on the above, the present invention has been completed. That is, the present invention includes the following items. (1) While continuously feeding out a long thermoplastic resin film band, a gusset step of continuously forming a predetermined casset folded laminated structure corresponding to the structure of the bag on the film band is performed, and then the damper roll is formed. The continuous movement of the film band is converted into one-pitch movement corresponding to the width of the bag body, and as one of the bag making steps, the film is sent out to the punching stand by the one-pitch movement and stopped at a predetermined position. Through a punching step of punching a predetermined portion of the laminated structure by a punching blade of a predetermined shape while stopped on the punching table, and finally, sent to a fusing table by one pitch movement and stopped at a predetermined position,
In a manufacturing method in which the gusset-folded laminated structure is melted for each width of the bag while being stopped on the melting table to form a bag side edge fusion portion and the handbag is sequentially separated from the end of the film band, A side wall shape of a blade portion of the punching blade having the shape of (1) is corrugated, and a hole corresponding to a position and a shape of the punching blade is provided on a punching table surface. (2) The method for manufacturing a handbag according to (1), wherein the apex of the corrugated shape of the side surface of the blade portion of the punching blade is substantially triangular. (3) In the case where the punching blade includes a straight portion and a curved portion, the pitch interval between the vertices of the corrugated blade in the curved portion of the punching blade is 10 times the pitch interval of the vertex of the corrugated blade in the straight portion of the punching blade. ~ 5
The method for producing a handbag according to claim 1 or 2, wherein the content is 0%. (4) The first, second, or third feature wherein the corrugations of the side surfaces of the blade portion of the punching blade have portions in which corrugations having different heights are alternately arranged. Manufacturing method of the handbag described in the section. (5) A first step in which the step of punching with a punching blade is a step of forming at least a part of the structure of the handhold.
Item 5. The method for producing a handbag according to Item 2, Item 3, Item 3 or Item 4.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. In this description,
The film refers to a thermoplastic resin film. First, the method of manufacturing the handbag shown in the perspective view of FIG.
The present invention will be described. In the handbag shown in FIG. 1, one bag film 1 is continuously formed on the front and back surfaces of the bag body via a square bottom structure of the bottom portion 3, and the film on the front surface and the back surface is fused to the left and right side edges. It is fused and fixed by the attachment portions 6 and 6 to form a bag body portion of the handbag of FIG. 1 having an opening at an upper portion. Two handbag films 4, 4 are provided on both side edges of the opening of the handbag, and each handbag film 4 is fixed to the bag opening edge by left and right handbag fixing portions 5, 5. ing. The left and right handbag films 4, 4 can be pulled out from the inside of the opening edge as shown in FIG. 1 and grasped with fingers to hang the handbag as shown in FIG. Such a handbag of FIG. 1 is manufactured from a long tubular film gusset-folded to the cross-sectional structure of FIG. 2 by a known bag making method,
In this manufacturing method, the semiconductor device is manufactured in a folded state shown by the stacked structure of the plan view of FIG. 3 and the cross-sectional view of FIG. The handbag bag shown in FIG. 3 is formed by punching out the gusset folds shown in FIG. And is built inside the opening edge as shown in FIG. 4)
Is formed.

[0006] In the manufacturing process of the handbag shown in Fig. 3, the long tubular film is continuously sent out to the gusset folding process, and the gusset fold is formed up and down, thereby forming both ends of the long tubular film. A gusset fold is formed in an M shape at the fold to form a long tubular film strip having a cross-sectional structure shown in FIG. Then, a fixed knife is applied to the position of the fold E in FIG. 2 in the flow of the film band, and the fold E is separated to obtain a sectional structure of FIG. The separation operation of the fold E by the fixed knife can be performed also in the following one-pitch moving step. Next, the film band having the cross-sectional structure shown in FIG. 4 is converted into one-pitch movement intermittently moving in units of the width of the bag body by a conventional damper roll. The film is sent to the process, and the laminating structure of the laminated structure of the film band is fused by forming the corner bottom fusion portion 18 for the bottom corner and the hand holding portion 5 for the hand holding portion. . In the bottom heat-seal process and the hand-held heat-seal process, a plate is inserted in the middle of the fold on the front side and the back side by a conventional method, and a linear heat iron inclined from above and below is applied to this plate. Then, each heat seal is performed. Next, the film band is also sent out to the punching table by one pitch movement, and at the moment the film band is stopped on the punching table, the punching blade is dropped in synchronization, and the upper edge of the film band is punched and punched. A recess 17 is formed. Finally, the film band is sent to the fusing table by one-pitch movement, and the handbags are blown and separated one by one while forming the bag side edge fusion part 6 by the descending heated fusing blade.

The method of manufacturing a handbag described here is a typical method of manufacturing the handbag shown in FIG. In this manufacturing method, the punching step of forming the punching portion 17 is such that the four laminated films at the upper edge of the laminated structure of FIG. It is performed by punching at once by dropping the blade. The reason for performing this punching process is that the film on the inner surface of the opening edge is separated from the opening edge by punching out the fold G of the opening edge in FIG. This is for forming the hand-held film 4 between them. Conventionally, in the punching process, a metal punching blade having the shape of the punching portion 17 is simply punched on a laminated film on a flat punching table. In this case, the noise pollution was severe. Also, instead of such mechanical cutting,
When performing punching by fusing to press a hot blade commonly used in a bag making process, four films are fused at a cut portion. It is impossible to apply the anti-fusing agent only to the inside of the gusset fold G in FIG. 2 even if it is attempted to avoid this fusion by applying a conventional anti-fusing agent. The manufacturing method of the present invention is characterized in that a cutting edge has a corrugated side surface and that the punching table has a hole so that the cutting edge does not contact the punching table. As the punching blade of the present invention, for example, as shown in FIG. 6A, a triangular shape can be used. This punching blade has a base S and a blade R
And the blade portion is provided with a blade extending from the triangular tip to the concave portion. The interval between the peaks of the corrugation of the punching blade of the present invention can be appropriately selected from 2 to 20 mm, preferably from 4 to 10 mm. If this interval is too small, the escape of the film surface at the moment of cutting becomes large, and if it is too wide, the shape of the punched portion becomes uneven.

[0008] The punching blade of the present invention has other shapes.
6b and 6c can be used. FIG.
The punching blade forming the punching portion 17 can have a plane shape that is half the elliptical shape as shown in the plan shape of FIG. 7A.
However, in view of the strength and stability of the shape of the punching blade, the punching portion 17 is formed by a triangular wavy cutting edge provided on the lower half periphery as the elliptical punching blade in FIG. 7B. It is desirable. The shape of the punching blade of the present invention is appropriately selected according to the punching shape. This punching blade is formed by bending a thin sheet metal having a thickness of 1 mm or less into an elliptical shape, and mechanically grinding a lower edge manufactured by welding both ends.
And a continuous triangular blade shape as shown in FIG.
This elliptical blade can be used by fixing it to the base plate of the punching blade with screws. Alternatively, a groove may be formed in a metal flat plate, and the groove may be continuously buried in the groove with the cutting edge of the corrugated blade facing upward. The punching blade of the present invention,
It does not collide with the punching table but only contacts the soft film, and no special impact resistance is required. For this reason, although the steel used for a normal punching blade may be used as a cutting edge, it can be manufactured from a tin plate or the like which can be easily processed. Also,
In some cases, a hard resin molded product can be used for the punching blade of the present invention. In the case of a conventional horizontal blade-type punching blade, the straight blade part evenly hits the film surface evenly,
At the time of cutting, the contact of the cutting edge with the film is weak, and the film escapes from the cutting edge, so that cutting from an accurate position cannot be started. On the other hand, the punching blade of the present invention has a corrugated shape, particularly a triangular shape, and when the vertex is sharp, the vertex of the blade shape strongly contacts the film surface, so that the film surface may escape from the cutting edge. Instead, the cutting of the film starts at the position where the vertex of the cutting edge hits. When the punching blade further descends, the film is instantaneously and smoothly cut into the shape of a punching blade at the blade portion inclined from the top.

The punching step by the punching blade of the present invention is carried out on the hole thus formed in the punching table. Accordingly, since the punching blade is only inserted into the hole provided in the punching table and does not directly collide with the punching table, almost no noise is generated. The shape of the peripheral edge of the hole provided in the punching table is desirably formed in accordance with the shape of the outer edge of the punching blade. It is desirable that the shape and size of the peripheral edge of the hole of the punching table be closer to the shape of the punching blade, because the film surface will not escape when the blade edge comes into contact. for that reason,
The gap between the shape of the peripheral edge of the hole and the outer edge of the punching blade is preferably as small as possible, and it is desirable that the gap be as narrow as possible according to the accuracy of the drop position of the punching blade. This interval can be usually about 0.1 to 2 mm. Further, in order to prevent the film surface from escaping when the blade edge hits, it is desirable that the hole is formed in a groove shape having a width just enough to fit the width of the punching blade. in this case,
The groove shape and the shape of the punching blade are almost the same. Also, by introducing compressed air into the hole of the punching table, during the punching operation,
If the inside of the hole is slightly pressurized and the center part of the punched film is lifted by air pressure, the film escapes like the groove shape, and the punched waste film passes through the punching blade by compressed air flow It is convenient because it can be collected. When the hole of the punching table is formed in a groove shape, it is perfect in preventing escape of the film surface, but it may be difficult to remove the punched film dust. When the hole of the punching table is formed in a groove shape, it is desirable to remove the film dust by a method of sucking with compressed air or blowing off with compressed air. Even in the case of a groove shape, the above-described compressed air can be introduced into the groove and used for removing film dust. In the manufacturing method of the present invention, the depth of the hole (including the groove) of the punching table needs to be such that the tip of the punching blade does not collide. Therefore, it is possible to make the depth of the punching blade 2 to 3 mm or more larger than the height of the corrugated cutting edge. Thus, since the tip of the punching blade does not collide with anything other than the film, there is an advantage that not only there is no noise but also the durability of the punching blade is increased.

When the hole of the punching table is formed as a through hole, it is convenient that the punched out film dust can be pneumatically dropped from inside the punching blade to below the punching table from within the punching blade.
The manufacturing method of the present invention can be similarly applied to the simplest handbag having a planar shape shown in FIG. In this handbag, a bag body is formed by fixing a bag body film 1 that is continuous on the front and back with left and right side edge fusion parts 6, and two pieces integrally extended from an opening edge on an upper part. A handpiece film 4 is provided. In the case of this handbag, the same corrugated punching blade as described above can be used in the step of punching the punching hole M on the inner edge of the handbag film and the outer edge L of the handbag portion. next,
The manufacturing method of the present invention in the case of the handbag shown in FIG. 9 will be described. This bag differs from the handbag of FIG. 1 only in that the handbag film 4 is outside the opening edge of the bag.
Although the outer handbag is convenient from the viewpoint of use, the gusset folding process for making the laminated structure of the film strip shown in FIG. 10 is difficult, and it has been difficult to put it to practical use. In this bag manufacturing method, a long tubular film developed by the present inventor can be formed into a gusset fold having a cross-sectional structure as shown in FIG. 11 by passing through a box-shaped gusset folding path while expanding the film by air pressure. it can. By using the pneumatic pressure and the box-shaped gusset folding path, it is possible to continuously form a variety of gusset-fold laminated film bands. Now, by using the box-shaped gusset folding method, a tubular film is continuously formed as shown in FIG.
After making a gusset-folded film strip with a cross-sectional structure of 1,
The movement of the film band is converted into one-pitch movement by a damper roll.
The central part of 1 can be punched by an elliptical punching blade having a wavy cutting edge all around the present invention. At this time, the four folds 9 at the top, bottom, left and right are cut at the same time, and the four folds are punched out. Then, the film band is cut and separated on the center line 14 to the left and right, and a plate is inserted between the upper and lower films 12 and 13 and the lower and lower films 12 and 13 of the left and right film bands. A heat blade is pressed from above and below to heat-seal the hand-held fixing portion, and then the fusing step is performed to blow off the side edges of the bags of the two rows of film bands to obtain the hand-bag shown in FIG. Alternatively, the film strip of FIG. 11 is cut along the center line, the film strip having the cross-sectional structure of FIG. 10 is separated into two rows, and the method of manufacturing the handbag of FIG. The same stamping process as the hand-held part and the heat-sealing step of the hand-held part are performed as shown in FIG.
Handbags can be manufactured.

Next, the manufacture of the handbag for a disk-shaped object shown in the plan view of FIG. 12 will be described. This handbag for a disk-shaped object is shown in FIG.
13 and the cross-sectional structure of FIG. Bottom film 2 of bag
1 is continuously bent to the left and right upper films 23 via the left and right side gussets 22. Both ends of the laminate are welded at upper and lower peripheral welds 26 to form a bag for a disc-like object. At the center of the left and right upper films 23, there is an opening 28 in the form of a slit. At the left and right edges of the opening, a hand film 24 folded back from the upper film 23 twice is laminated. The triple lamination is welded and fixed by four inclined hand-held fixing portions 25, and hand-punching portions 27 are provided at the middle of the left and right opening edges of the hand-held fixing portions 25, respectively. By this hand punching portion, the hand film 24 is separated from the opening edge of the top film, and a finger can be put between them to hang it. Further, a semicircular peripheral punching hole 20 is punched at a position where the upper and lower welding edges and the left and right opening edges intersect. The hole can greatly open the opening when the board-shaped object is stored in the bag body, and thereby, the board-shaped object substantially matching the size of the bag body can be stored. In order to manufacture such a handbag for a disc-like material as shown in FIG. 12, first, a long tubular film is continuously sent to a casset process, and the cross-sectional structure of FIG. A film band having the same laminated structure as that of the continuous left and right hand film is formed. The movement of the film band having the laminated structure is converted into a one-pitch movement through a damper roll, and then sent out onto a peripheral punching table, on which the peripheral punching hole 20 is punched by a circular corrugated punching blade. Next, a knife is installed between the left and right hand film 24, and the center line of the upper surface of the film band is moved by one pitch with a fixed knife with the cutting edge directed upward between the left and right hand films. Disconnect. Next, the upper surface of the film band is opened from the cutting line, and the film band is sent out so as to wrap the hand-held heat-sealing base inside the film band. That is, by one pitch movement, the bottom film 21 is placed on the lower surface of the heat seal table.
And the upper film 23 of the bag slides on the upper surface of the heat seal table. At this time, the heat seal table is fixed in a suspended state by two columns provided before and after the punching position of the table. The two columns extend upward from an open slit in the center of the film strip, and the columns are fixed to an external frame.

Synchronized at the moment of stopping at every one-pitch movement, a linear heat iron descends from above onto an opening edge in the upper film of the bag body, and presses the heat iron onto the heat seal table. , A hand-held fixing portion 25 is formed. Next, the sheet is further sent to the handpiece punching table by one-pitch movement, and the handcut punching section is punched at the left and right opening edges by the punching blade having the corrugated cutting edge of the present invention. In the punching process of the hand punching section, it is necessary to punch only the hand section without punching the bottom film. Therefore, it is necessary to interpose a punching table between the bottom film and the top film as in the hand welding process. For example, a hand-held punching table shown in FIG. 14 can be used as a punching table when a punching table is interposed between the upper and lower films. For example, the gusset-folded film band of FIG. 13 is fed onto the punching base 39 by one pitch movement from the left of the punching table of FIG. For reference, a fixed knife 38 for cutting along the center line is shown at the left end. The cutting with this fixed knife is shown in FIG.
In the case of the handbag, it is necessary to perform it before the heat sealing of the handbag fixing portion 25 and the construction of the peripheral punching hole. In the case of this handbag, the order of construction of the handbag punching step, the heat sealing step of the handbag fixing part and the peripheral punching hole step is not particularly limited, but when the handbag part punching step is performed first, FIG. As described above, it is convenient to provide a hole at the end of the hand-held punching table and to install a fixed knife in this hole. With this method, only the top film can be safely cut. The film band is fed into the punching process so as to wrap the punching table 30 inside the film band through the slit between the center cut and separated opening edges inside the film band with the center line cut, and the punching is performed. Stand 30
Stop with the inside stored. At this time, the top film 23 of the film band is disposed in contact with the top surface of the punching table 30, and the bottom film 21 of the film band is placed on the punching table 3.
0 can be slid into the gap between the lower surface of the zero and the punching base 39.

The punching table 30 is suspended and supported by two columns 31 and 32 extending from a frame 33 fixed to the outside. The film band is moved by one pitch to the punching table 30 suspended and fixed as described above, and the film band stops at a predetermined position on the punching table while wrapping the punching table 30 as described above. Synchronizing at the moment of the stop, the elliptical punching blade 34 having the same elliptical punching hole in the center of FIG. 12 can punch the elliptical opening edge over the left and right opening edges. The punching blade 34 is provided with a triangular blade. The punching blade 34 is fixed to a mounting plate 36, and the mounting plate 36 is
By operating up and down, when the piston descends,
A punching blade is fitted into a hole 35 provided in the punching table 30. By this operation, only the top film of the film band is cut smoothly. At this time, the lowest position of the piston movement is set at a position where the tip of the punching blade 34 does not contact the bottom of the hole groove of the punching table 30. In this case, since the film waste cannot be dropped from the punching blade to the opposite side, it is preferable to form the hole corresponding to the elliptical punching blade into an elliptical groove because an accurate shape can be obtained. After the punching step, the peripheral edge is blown off in a fusing step, so that the handbag shown in FIG. 12 can be manufactured.

[0014]

According to the manufacturing method of the present invention, by the combination of the corrugated punching blade and the holes provided in the punching table, the noise in the punching step for forming the handbag portion of the handbag can be easily prevented and the punching blade can be used. The effect of improving the durability of the device was obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of one handbag to which the manufacturing method of the present invention is applied.

FIG. 2 is a cross-sectional view showing a gusset-folded structure of the raw material film of the handbag of FIG.

FIG. 3 is a plan view of the shopping bag of FIG. 1;

FIG. 4 is a cross-sectional view taken along a position indicated by an arrow in FIG. 3;

FIG. 5 is an explanatory diagram of a manufacturing process of the handbag of FIG. 1;

FIG. 6 is a partial side view showing a side shape of a punching blade used in the present invention.

FIG. 7 is a plan view of a punching blade to which the manufacturing method of the present invention is applied.

FIG. 8 is a plan view of another example of a handbag to which the present invention is applied.

FIG. 9 is a plan view of another example of a handbag to which the present invention is applied.

FIG. 10 is a cross-sectional view of the handbag shown in FIG. 9 taken along the arrow.

FIG. 11 is a sectional view showing a gusset structure of a film band used in the method for manufacturing the handbag shown in FIG. 9;

FIG. 12 is a plan view of another example of a handbag for a disc-shaped object to which the present invention is applied.

FIG. 13 is a cross-sectional view of the handbag shown in FIG. 12 taken along the arrow.

FIG. 14 is a longitudinal sectional view for explaining a punching step used in the method for manufacturing the handbag shown in FIG. 12;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag film 2 Opening part 3 Bottom part 4 Hand part film 5 Hand part fixing part 6 Side edge fusion part 7 Bottom gusset fold 8 Fold 9 Fold 11 Hand part film 17 Punching part 18 Square bottom fusion part 20 Peripheral edge Punching hole 21 Bottom film 22 Side gusset 23 Top film 24 Handbag film 25 Handbag fixing part 26 Peripheral welding part 27 Handbag punching part 28 Opening 30 Punching table 31, 32 Post 33 Frame base 34 Punching blade 35 Hole groove 36 Mounting plate 37 Air piston 38 Fixed knife 39 Punching base

Claims (5)

[Claims] A gusset step of continuously forming a predetermined casset-folded laminated structure corresponding to the structure of a bag on the film band while continuously feeding out a long thermoplastic resin film band, and then a damper. Via a roll, the continuous movement of the film band is converted into one-pitch movement corresponding to the width of the bag, and as one of the bag making steps, sent out to a punching table by the one-pitch movement to a predetermined position. Stopping, passing through a punching step of punching a predetermined portion of the laminated structure with a punching blade of a predetermined shape while stopping on the punching table, and finally sending it to the fusing table by one pitch movement and stopping at a predetermined position A manufacturing method for fusing the gusset-folded laminated structure for each width of the bag while stopping on the fusing table to form a bag side edge fusion portion and sequentially separating the handbag from the end of the film band. , Prescribed A side shape corrugated edge portion of the punching blade shape, manufacturing method of tote bag, characterized in that holes corresponding to the position and shape of the punching blades in the punching 抜台 surface is provided. 2. A method for manufacturing a handbag according to claim 1, wherein the apex of the corrugated side surface of the blade portion of the punching blade is substantially triangular. 3. A pitch interval between vertices of a corrugated blade at a curved portion of a punching blade, wherein a pitch interval between vertices of a corrugated blade at a curved portion of the punching blade is set. Of 1
The method for producing a handbag according to claim 1 or 2, wherein the content is 0 to 50%. 4. A punching blade according to claim 1, 2 or 3, wherein the side surface of the punching blade has a waveform in which the waveforms having different heights are alternately arranged. Manufacturing method of handbag. 5. The method for manufacturing a handbag according to claim 1, wherein the step of punching with a punching blade is a step of forming at least a part of the structure of the handbag.