JP2008012646A - Flexible die - Google Patents

Abstract

To provide a flexible die capable of being wound around a cylindrical roller such as a magnet roller without “floating of base”.
In a flexible die 1 in which embossing convex portions 3 are formed in a predetermined pattern on one surface (front surface) of a flexible base 2, a roller winding direction is provided on the other surface (back surface) of the flexible base 2. A plurality of (or one) slit-like recesses (slit-like grooves) 4 extending along the orthogonal direction are formed at a predetermined pitch along the roller winding direction. If the concave stripes 4 are formed on the back surface of the flexible base 2 in this way, when the flexible die 1 is wound around the magnet roller 301, the embossing convex portions 3 are formed by bending deformation of the formation portions of the concave stripes 4. Since the formation portion is curved and deformed along the outer peripheral surface of the magnet roller 301, “floating of the base” does not occur.
[Selection] Figure 5

Description

  The present invention relates to a flexible die (sheet-shaped blade) used for punching (pressing) or embossing a sheet material such as a paper sheet or a plastic sheet (film).

  Conventionally, as a method of punching and half-cutting, a die board such as a plywood is subjected to grooving according to the punching pattern, and a strip-shaped blade (Thomson blade) is inserted into the processed groove. A method is employed in which a die is produced, and this die is mounted on a press machine or the like, and a punching process or a half cut of a plastic sheet or the like is performed.

  Recently, a flexible die having a pressing blade with a pattern corresponding to the shape of the cutting line is produced on one side of a flexible base (ferromagnetic material), and this flexible die is used as a magnet of a rotary processing apparatus 300 as shown in FIG. A method of punching or half-cutting a paper sheet, a plastic sheet or the like by winding around a roller 301 is also employed (see, for example, Patent Documents 1 and 2). In the magnet roller 301, a large number of permanent magnets are embedded and arranged on the outer peripheral surface in order to stably attract the flexible die.

  Also, in the method of embossing the surface of a sheet material such as a plastic sheet (film), a flexible die having a predetermined pattern of embossing irregularities on one surface of a flexible base (ferromagnetic material) is produced. Similarly, a method is adopted in which a die is wound around a magnet roller 301 of a rotary processing apparatus 300 to emboss the surface of a plastic sheet or the like. In addition, as a flexible die for embossing, a flexible die in which a convex portion for processing of a predetermined pattern is formed on the surface of the flexible base, a flexible die in which a concave portion for processing of a predetermined pattern is formed on the surface of the flexible base, or There is a flexible die in which these processing convex portions and processing concave portions are combined.

The flexible die as described above is manufactured by machining or etching, and the one manufactured by etching is generally called an etching die.
JP 2000-190284 A JP 2002-221220 A

  By the way, in the above-mentioned flexible die, when the cutting blade and the embossing unevenness are partially concentrated, or the cutting die extending along the winding direction of the flexible die around the magnet roller and the embossing unevenness When there is a large amount, the winding property of the flexible die around the magnet roller deteriorates, and a “base lift” may occur in which a part of the flexible base floats from the outer peripheral surface of the magnet roller.

  For example, in the flexible die 401 in which the embossing convex portion 403 of the processing pattern P as shown in FIG. 17 is formed on the surface of the flexible base 402, the rigidity of the formation portion of the embossing convex portion 403 (in the roller winding direction R) Bending rigidity) is high and it becomes difficult to bend. For this reason, as shown in FIG. 19, when the flexible die 401 is wound around the magnet roller 301, “floating of the base” occurs between the processing patterns P and P of the embossing convex portion 403. Embossing cannot be performed.

  For example, as shown in FIG. 18, in the flexible die 501 in which a large number of pressing blades 503... 503 are formed on the surface of the flexible base 502 along the winding direction R around the magnet roller 301, the pressing blades 503. Since the portion where 503 is concentrated is so rigid that it is difficult to bend, when it is wound around the magnet roller 301, “floating of the base” occurs, and accurate machining cannot be performed.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a flexible die that can be wound around a cylindrical roller such as a magnet roller without “floating of the base”.

  The present invention is a flexible die in which at least one of a pressing blade or an embossing unevenness is formed on one surface of a flexible base, and the flexible base is used by being wound around a cylindrical roller. On the other surface, a groove extending along a direction orthogonal to the winding direction of the flexible die around the roller at least on the back side of the press cutting blade or / and at least on the back side of the embossing unevenness. (Slit-like groove) is formed.

  In the present invention, the number of grooves formed on the other surface (back surface) of the flexible base may be one. A plurality of concave stripes may be formed on the other surface (back surface) of the flexible base at a predetermined pitch along the winding direction of the flexible die around the roller. In addition, when forming a some concave strip, you may form over the substantially whole area of the other surface (back surface) of a flexible base.

  According to the present invention, the direction perpendicular to the direction in which the flexible die is wound around the roller (hereinafter also referred to as the roller winding direction) is formed on the other surface of the flexible base (the back side of the forming surface of the pressing blade and the embossing unevenness). Since a plurality of concave stripes (or one concave stripe) extending along the groove are formed, the flexural rigidity of the concave stripe forming portion is weakened, and the formation portion of the press cutting blade and the embossing irregularities is easily bent. Therefore, even if there are patterns where the cutting blades and embossing irregularities are partially concentrated, or there are many cutting blades and embossing irregularities extending along the roller winding direction, these cutting blades and embossing By forming a plurality of ridges (or a single ridge) on the back side of the rugged surface for use, when the flexible die is wound around the roller, the forming part of the pressing blade and the rugged surface for embossing is placed on the outer surface of the roller. Therefore, the flexible die can be mounted on the roller without the “floating of the base”.

  The present invention is a flexible die in which at least one of a pressing blade or an embossing unevenness is formed on one surface of a flexible base, and the flexible base is used by being wound around a cylindrical roller. On the other surface, at least a part corresponding to the back side of the pressing blade or / and at least the back side of the embossing unevenness, a plurality of the die along a direction perpendicular to the winding direction of the flexible die around the roller. A recess group is formed in which the recesses are linearly arranged at a predetermined interval.

  In the present invention, the recess group formed on the other surface (back surface) of the flexible base may be in one row. A plurality of concave groups may be formed on the other surface (back surface) of the flexible base at a predetermined pitch along the winding direction of the flexible die around the roller. In addition, when forming a some recessed part group, you may form over substantially the whole area of the other surface (back surface) of a flexible base.

  According to the present invention, a plurality of recess groups (or one row of recesses) extending along the direction orthogonal to the roller winding direction on the other surface of the flexible base (the back side surface of the forming surface of the pressing blade and the embossing unevenness). Group), the bending rigidity of the formation part of the recess group is weakened, and the forming part of the press cutting blade and the embossing unevenness is easily bent. Therefore, even if there are patterns where the cutting blades and embossing irregularities are partially concentrated, or there are many cutting blades and embossing irregularities extending along the roller winding direction, these cutting blades and embossing By forming a plurality of concave groups (or a single row of concave groups) on the back side of the concave and convex portions for use, when the flexible die is wound around the roller, the forming portion of the pressing blade and the embossing concave and convex portions is arranged on the outer peripheral surface Therefore, the flexible die can be mounted on the roller without the “floating of the base”.

  In addition, the present invention is a flexible die in which only the embossing unevenness (embossing convexity or embossing concave portion) is formed on the surface of the flexible base, or a flexible die in which only the press cutting blade is formed on the surface of the flexible base. The present invention is not limited to this, and the present invention can also be applied to a flexible die in which both the embossing unevenness and the press cutting blade are formed on the surface of the flexible base.

  Further, the present invention can be applied to a flexible die attached to a roller not equipped with a magnet (permanent magnet) in addition to a flexible die attached to a magnet roller.

  According to the flexible die of the present invention, since the back surface of the pressing base and the embossing unevenness is formed on the back surface of the flexible base, a recess (or a recess group) extending in a direction perpendicular to the roller mounting direction is formed. The flexible die can be wound around a cylindrical roller such as a magnet roller without the “floating of the base”, and punching (pressing) or embossing can be accurately performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing an example of the flexible die of the present invention. FIG. 2 is a longitudinal sectional view of an essential part of the flexible die. FIG. 3 is a back view of the flexible die of FIG.

  The flexible die 1 in this example is a rotary die used in a rotary processing apparatus that performs embossing, and an embossing convex portion 3 is formed in a predetermined pattern on one surface (front surface) of a flexible base 2. . The processing pattern P of the embossing convex portion 3 has a shape in which an “x” pattern extending along a diagonal line is combined inside a rectangle “□”. A plurality of the processing patterns P ·· P are arranged in each of a direction orthogonal to the winding direction R of the flexible die 1 around the magnet roller 301 (hereinafter also referred to as roller winding direction R) and a direction along the roller winding direction R. ing.

  The flexible die 1 having the above structure is used by being wound around a rotary magnet 301 of a rotary processing apparatus as shown in FIG. Here, in the flexible die 1 of this example, there are a large number of the embossing projections 3... 3 along the roller winding direction R, so that the rigidity (roller winding direction) of the embossing projection 3 is formed. R bending rigidity) is high, and it becomes difficult to bend. In consideration of these points, in the flexible die 1 of this example, the roller winding direction R is applied to the other surface of the flexible base 2 (the surface opposite to the surface on which the embossing projections 3 are formed (back surface)). Is characterized in that a plurality of slit-shaped concave strips 4... 4 extending along a direction orthogonal to the direction of winding are formed at a predetermined pitch along the roller winding direction R.

  In this way, a plurality of slit-shaped ridges (slit-shaped grooves) 4... 4 extending along the direction orthogonal to the roller winding direction R are formed on the other surface (back surface) of the flexible base 2. Then, it becomes possible to wind the flexible base 2 around the magnet roller 301 without “floating of the base”. This will be described below.

  First, in the flexible die 1 in which the embossing convex portion 3 is formed with the processing pattern P as shown in FIG. 1, the back surface of the flexible base 2 is difficult to bend because the embossing convex portion 3 is formed with a high rigidity and difficult to bend. When the groove is not formed, when the magnet roller 301 is wound, as shown in FIG. 19, the embossing convex portion 3 (403) is hardly deformed, and the processing patterns P and P A “base lift” occurs between the two.

  On the other hand, even if the formation rigidity of the embossing convex portion 3 is high, the plurality of concave stripes 4 extending along the direction orthogonal to the roller winding direction R on the back surface of the embossing convex portion 3 formation portion. ... If 4 is formed, when the flexible die 1 is wound around the magnet roller 301, the forming portion of each concave strip 4 is bent and deformed. As a result, as shown in FIG. 5, the portion where the embossing convex portion 3 is formed is curved and deformed along the outer peripheral surface of the magnet roller 301, and the flexible die 1 does not have a “base lift” on the magnet roller 301. It becomes possible to install in a state. As a result, accurate embossing can be realized.

  Here, the width and depth of the slit-like recess 4 formed on the back surface of the flexible base 2 and the pitch of the recess 4 in the roller winding direction R are determined when the flexible die 1 is wound around the magnet roller 301. In consideration of the thickness of the flexible base 2, the bending rigidity of the forming portion of the embossing convex portion 3, the curvature of the outer peripheral surface of the magnet roller 301, etc. It may be determined.

  In the example shown in FIGS. 1 to 3, the plurality of concave stripes 4 · 4 are formed over almost the entire back surface of the flexible base 2, but the present invention is not limited to this. The grooves 4.. 4 may be formed only in the portion corresponding to the back side of the formation portion of the embossing convex portion 3. Further, the cross-sectional shape of the recess 4 is not limited to a quadrangle, but may be any other shape such as a semicircle or a triangle.

  Furthermore, in the example shown in FIGS. 1 to 3, a plurality of concave strips 4 and 4 are formed on the back surface of the flexible base 2. For example, when the pattern width in the winding direction R of the embossing convex portion is small. Further, a single groove 4 may be formed on the back side of the embossing convex portion.

-Manufacturing method-
Next, an example of a method for manufacturing the flexible die shown in FIGS. 1 to 3 will be described with reference to FIGS.

  (1) As shown in FIG. 7, a photomask (negative film) 23 having an exposure pattern 23a corresponding to the shape of the embossing projection 3 of FIG. Further, as shown in FIG. 8, a photomask (positive film) 24 having an exposure pattern 24a having a shape corresponding to the slit-like recesses 4.

  (2) As shown in FIG. 6 (A), a photoresist is uniformly applied to the surface of the metal plate 10, and further, a photoresist is uniformly applied to the back surface of the metal plate 10. Photoresist films 21 and 22 are formed on the front and back surfaces, respectively.

  (3) As shown in FIG. 6B, a photomask (negative film) 23 (see FIG. 7) is placed and positioned on the photoresist film 21 on the surface of the metal plate 10, and the back surface of the metal plate 10 is also positioned. The photomask (positive film) 24 (see FIG. 8) is disposed and positioned on the photoresist film 22. The photomask 23 on the front side of the metal plate 10 and the photomask 24 on the back side are aligned with each other with the resist mark as a reference, and one end of the photomasks 23 and 24 is joined with the adhesive tape 30. .

  (4) Exposure and development of the photoresist films 21 and 22 on the front and back surfaces of the metal plate 10 to form a resist pattern 21a and openings 22b, 22b at positions corresponding to the plurality of concave stripes 4, 4 22a is formed (FIG. 6C).

  (5) Etching of the metal plate 10 is started using the resist patterns 21a and 22a on the front and back of the metal plate 10 as a mask, and the etching is stopped once when the progress of the etching reaches an amount corresponding to the depth of the recess 4 (FIG. 6D). By this first etching, a plurality of slit-shaped concave strips 4... 4 extending along the direction perpendicular to the roller winding direction R are formed on the back surface of the flexible base 2 at a constant pitch along the roller winding direction R. It is formed (see FIGS. 2 and 3). Thus, since the depth of the groove 4 can be accurately controlled by performing the etching of the groove 4 first, the bending rigidity of the formation portion of the groove 4 can be easily adjusted. .

  (6) As shown in FIG. 6 (E), a masking sheet 25 is pasted on the back surface of the metal plate 10 to protect the slit-shaped recesses 4... 4 formed by the previous etching against the etching solution. In this state, the etching is started again. The etching is stopped when the progress of the second etching reaches a predetermined depth ([the height considering the height of the embossing projection 3] − [the depth of the recess 4]). By such etching, as shown in FIG. 6 (F), the flexible base 2 and the trapezoidal cross section (projection), that is, the embossing convex section 3 are formed. After this etching is completed, the masking sheet 25 is peeled off. Further, the resist patterns 21a and 22a remaining on the upper surface side and the back side of the flexible base 2 are removed.

  In addition, after forming the embossing convex part 3 by etching (after the step of FIG. 6F is completed), if necessary, both sides of the embossing convex part 3 using an NC processing machine or the like. You may add the process (finishing process etc.) of cutting to a surface etc. with a cutting tool.

  In the above example, the plurality of slit-like recesses 4... 4 on the back surface of the flexible base 2 are processed by etching. However, the present invention is not limited to this, and each recess 4 is formed by fine machining. May be.

  In the above example, it extends along the direction orthogonal to the roller winding direction R of the flexible die 1 on the other surface of the flexible base 2 (surface opposite to the surface on which the embossing convex portion 3 is formed (back surface)). A plurality of slit-shaped concave strips 4... 4 are formed. However, the present invention is not limited to this. For example, as shown in FIG. 9, the roller winding direction on the other surface (back surface) of the flexible base 12. A plurality of recess groups 14... 14 in a form in which a plurality of recesses 14 a... 14 a are linearly arranged at predetermined intervals along a direction orthogonal to R are formed at a predetermined pitch along the roller winding direction R. It may be left.

  In this way, when the concave portions 14... 14 having the shape in which the concave portions 14 a... 14 a are arranged linearly are formed on the back surface of the embossing convex portion 3, the embossing convex portions 3 are formed. Even when the bending rigidity of the portion is high, when the flexible die 11 is wound around the magnet roller 301 (see FIG. 4), the forming portion of the embossing convex portion 3 becomes the magnet roller due to the bending deformation of the forming portion of each concave group 14. Thus, the flexible die 11 can be mounted on the magnet roller 301 without the “floating of the base”. As a result, accurate embossing can be realized.

  Here, the size and depth of each recess 14 a of each recess group 14 formed on the back surface of the flexible base 12 and the pitch of the recess group 14 in the roller winding direction R are determined by winding the flexible die 11 around the magnet roller 301. In some cases, the thickness of the flexible base 12, the bending rigidity of the embossing convex portion 3 (see FIGS. 1 and 3), and the outer peripheral surface of the magnet roller 301 are prevented so that “floating of the base” does not occur. What is necessary is just to determine by experiment, calculation, etc. in consideration of a curvature.

  In addition, the front shape of the recessed part 14a which comprises each recessed part group 14 is not restricted to a rectangle, Other arbitrary shapes, such as circular and an ellipse, may be sufficient.

  In the example shown in FIG. 9, a plurality of recess groups 14... 14 are formed on the back surface of the flexible base 12. For example, when the pattern width in the winding direction R of the embossing projections is small, A row of recesses 14 may be formed on the back side of the embossing projections.

  In the above example, the example in which the present invention is applied to a flexible die in which a convex pattern for embossing of a predetermined pattern is formed on the surface of the flexible base is shown, but the present invention is not limited to this, and the surface of the flexible base is not limited thereto. The present invention can also be applied to a flexible die in which a predetermined pattern of embossing recesses is formed, or a flexible die in which both embossing protrusions and embossing recesses are formed on the surface of a flexible base.

-Other embodiments-
FIG. 10 is a front view showing another example of the flexible die of the present invention. FIG. 11 is a longitudinal sectional view of an essential part of the flexible die.

  The flexible die 101 of this example is a rotary die that is used by being wound around a magnet roller 301 (see FIG. 4) of a rotary processing apparatus, and has a large number of press cutting blades 103 on one surface (surface) of the flexible base 102. Is formed. The press cutting blades 103... 103 are inclined blades for cutting a plastic sheet or the like, and are arranged at a predetermined pitch along the winding direction R of the flexible base 102 around the magnet roller 301 (hereinafter also referred to as roller winding direction R). ing.

  In the flexible die 101 formed in such a manner that a large number of the press cutting blades 103... 103 are partially concentrated along the roller winding direction R, the rigidity of the forming portion of the press cutting blades 103. R bending rigidity) is high and bending becomes difficult. In consideration of such points, in the flexible die 101 of this example, the other surface of the flexible base 102 (the surface opposite to the surface on which the pressing blade 103 is formed (the back surface)) is orthogonal to the roller winding direction R. A plurality of slit-like concave strips 104... 104 extending along the direction in which the roller is wound are formed at a predetermined pitch along the roller winding direction R.

  As described above, when a plurality of slit-shaped concave strips 104... 104 extending in the direction perpendicular to the roller winding direction R are formed on the other surface (back surface) of the flexible base 102, the flexible die 101 is magnetized. When winding around the roller 301, the forming portion of the press cutting blade 103 is bent and deformed along the outer peripheral surface of the magnet roller 301 due to the bending deformation of the forming portion of each concave stripe 104. It becomes possible to install in the state without "floating". As a result, accurate machining (cutting) can be realized.

  In the example shown in FIGS. 10 and 11, the slit-like recesses 104... 104 may be formed over almost the entire back surface of the flexible base 102 as in the flexible die 1 shown in FIG. And you may form only in the part corresponded to the back side of the formation part of the press cutting blade 103 among the back surfaces of the flexible base 102. FIG. Moreover, the cross-sectional shape of the concave stripe 104 is not limited to a quadrangle, and may be any other shape such as a semicircle or a triangle.

  The flexible die 101 in this example can be manufactured by an etching process basically similar to the process shown in FIG. However, after etching, a plurality of slit-shaped concave stripes 104... 104 are formed on the back surface of the flexible base 102, and protrusions (projections) having a trapezoidal cross section are formed on the surface of the flexible base 102 (FIG. 6 (F ))), Using an NC machine or the like, as shown in FIGS. 12 (A) to 12 (C), remove both side surfaces of the protrusion 103 ′ having a trapezoidal cross section corresponding to the pressing blade 103. The cutting edge 103 having the shape shown in FIGS. 11 and 12 is obtained by cutting with a conical cutting tool 100 to perform cutting edge processing.

  In this example as well, a plurality of slit-like concave strips 104... 104 on the back surface of the flexible base 102 may be formed by fine machining.

  Further, instead of the plurality of slit-like concave stripes 104... 104, concave groups 14... 14 as shown in FIG. 9 are formed at a predetermined pitch along the roller winding direction R on the back surface of the flexible base 102. You may keep it.

  In the example shown in FIGS. 10 and 11, the plurality of concave stripes 104 are formed on the back surface of the flexible base 2. For example, the pattern width in the winding direction R of the pressing blade (concentrated width of the pressing blade) Is small, one recess 104 (or one row of recesses) may be formed on the back side of the embossing projection.

  In the example of FIG. 10 described above, an example is shown in which the present invention is applied to the flexible die 101 in which a large number of pressing blades 103... 103 are formed along the roller winding direction R. However, the present invention is limited to this. For example, as shown in FIG. 13, a plurality of pressing blades 113... 130 in a form in which a large number of pressing blades 113... 113 are arranged along a direction orthogonal to the roller winding direction R is predetermined along the roller winding direction R. The present invention can also be applied to the flexible die 111 formed at intervals of.

  In each of the above examples, the flexible die 1 in which only the embossing convex portion 3 (or the embossing concave portion) is formed on the flexible base 2 or the flexible die 102 in which only the press cutting blades 103. Although the example which applied this invention to the die | dye 101 was demonstrated, this invention is not limited to this, It applies to the flexible die | dye in which both the unevenness | corrugation for embossing and the press cutting blade were formed in the surface of a flexible base Can do.

  As an example thereof, as shown in FIG. 14, a rectangular pattern (quarter radius) pressing blade 231 is formed on the surface of the flexible base 202, and a region surrounded by the pressing blade 231, as shown in FIG. 1. An example is a flexible die 201 in which embossing convex portions 232 of the processing pattern P are formed at a plurality of locations. Also in such a flexible die 201, as shown in FIG. 15, on the other surface of the flexible base 202 (surface opposite to the surface on which the press cutting blade 231 and the embossing convex portion 232 are formed (back surface)). By forming a plurality of slit-like recesses 204... 204 (or a plurality of recess groups) extending along a direction orthogonal to the roller winding direction R at a predetermined pitch along the roller winding direction R. The flexible die 201 can be mounted on the magnet roller 301 (see FIG. 4) without “base floating”.

  Here, the embossing unevenness and the shape (processing pattern) of the embossing formed on the flexible die are not limited to the shapes shown in FIGS. 1 and 10, for example, a triangle or a round shape, or an animal / animation Other arbitrary shapes such as a character pattern, a floral pattern, a character, etc. may be used.

It is a front view which shows an example of the flexible die | dye of this invention. It is a principal part longitudinal cross-sectional view of the flexible die of FIG. It is a reverse view of the flexible die | dye of FIG. It is a perspective view which shows the state which wound the flexible die of FIG. 1 around the magnet roller. It is action | operation explanatory drawing of the flexible die of FIG. It is a figure which shows typically an example of the manufacturing method of the flexible die of FIGS. 1-3. It is a figure which shows typically the photomask used for the manufacturing method of FIG. It is a figure which shows typically the photomask used for the manufacturing method of FIG. It is a reverse view which shows the modification of the flexible die | dye of FIG. It is a front view which shows the other example of the flexible die | dye of this invention. It is a principal part longitudinal cross-sectional view of the flexible die of FIG. It is a figure which shows typically an example of the manufacturing method of the flexible die of FIG.10 and FIG.11. It is a front view which shows the other example of the flexible die | dye of this invention. It is a front view which shows the other example of the flexible die | dye of this invention. It is a principal part longitudinal cross-sectional view of the flexible die | dye of FIG. It is a perspective view which shows a part of rotary processing apparatus typically. It is a front view which shows an example of the flexible die | dye for embossing. It is a front view which shows an example of the flexible die | dye which has a cutting blade for cutting. It is a figure which shows the problem which generate | occur | produces when winding the flexible die of FIG. 17 around a magnet roller.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 Flexible die 2,102 Flexible base 3 Embossing convex part 103 Pressing blade 4,104 Slit-shaped groove P Processing pattern R Roller winding direction 301 Magnet roller

Claims (4)

At least one of the press cutting blade or the embossing unevenness is formed on one surface of the flexible base, and the flexible die is used by winding the flexible base around a cylindrical roller,
On the other surface of the flexible base, along the direction orthogonal to the winding direction of the flexible die around the roller, at least on the back side of the press cutting blade and / or on the portion corresponding to the back side of the unevenness for embossing. A flexible die characterized in that a concave line extending in a straight line is formed. The flexible die of claim 1,
A plurality of concave stripes extending along a direction orthogonal to a winding direction of the flexible die on the roller is formed at a predetermined pitch along the winding direction of the flexible die on the roller. . At least one of the press cutting blade or the embossing unevenness is formed on one surface of the flexible base, and the flexible die is used by winding the flexible base around a cylindrical roller,
On the other surface of the flexible base, at least on the back side of the pressing blade, and / or on the portion corresponding to at least the back side of the embossing unevenness, in a direction orthogonal to the winding direction of the flexible die around the roller A flexible die characterized in that a plurality of recesses are linearly arranged at predetermined intervals along the recess group. The flexible die according to claim 3,
A plurality of concave portions in a form in which a plurality of concave portions are linearly arranged at predetermined intervals along a direction orthogonal to the winding direction of the flexible die around the roller is predetermined along the winding direction of the flexible die around the roller. A flexible die characterized by being formed with a pitch of

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