JP4975392B2 - Flexible die - Google Patents

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 surface of a flexible base (ferromagnetic material), and this flexible die is used as a magnet of a rotary processing apparatus 700 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 701 is also employed (see, for example, Patent Documents 1 and 2). In the magnet roller 701, 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 of embossing a surface of a plastic sheet or the like by winding a die around the magnet roller 701 of the rotary processing apparatus 700 is employed. 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 801 in which the embossing convex portion 803 of the processing pattern Pa as shown in FIG. 34 is formed on the surface of the flexible base 802, the rigidity of the portion where the embossing convex portion 803 is formed (in the roller winding direction R) Bending rigidity) is high and it becomes difficult to bend. For this reason, as shown in FIG. 36, when the flexible die 801 is wound around the magnet roller 701, a “base float” occurs between the processing patterns Pa and Pa of the embossing convex portion 803. Embossing cannot be performed.

  Further, for example, in the flexible die 901 in which the embossing convex portion 903 having a planar pattern (heart shape) as shown in FIG. 35 is formed on the surface of the flexible base 902, the rigidity of the portion where the embossing convex portion 903 is formed ( Since the bending rigidity in the roller winding direction R) is high and it is difficult to bend, when it is wound around the magnet roller 701, a “base float” occurs between the forming portions of the embossing convex portion 903, and accurate embossing occurs. It becomes impossible to process.

  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 provides a flexible die in which at least one of a pressing blade or an embossing unevenness is formed on one surface (surface) of a flexible base, and the flexible base is used by winding the flexible base around a cylindrical roller. By forming irregularities or linear recesses on the other surface (back surface), the bending rigidity (bending rigidity in the roller winding direction) of the forming part of the press cutting blade and the uneven part for embossing is weakened. It is characterized in that the die can be mounted on the roller without “base lift”. The specific configuration will be described below.

The present invention is a flexible die in which at least one of a pressing blade or an embossing unevenness is integrally 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 of the flexible base, before SL cutting blades back or rear side of the formation region of the embossing irregularities forming region of, or the back and the formation region of the embossing irregularities forming region of the cutting blades A plurality of projections and depressions are formed in a region including a portion corresponding to the back side in a direction in which the flexible die is wound around the roller and in a direction perpendicular to the winding direction .

  In this invention, you may form an unevenness | corrugation over substantially the whole area of the other surface (back surface) of a flexible base.

  According to the present invention, since the unevenness 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), the bending rigidity of the forming portion of the pressing blade and the embossing unevenness ( The bending rigidity in the roller winding direction is weakened, and it is easy to bend. As a result, the forming portion of the press cutting blade and the embossing unevenness is curved and deformed along the outer peripheral surface of the roller, and the flexible die can be mounted on the roller without “base floating”.

  As a specific configuration of the present invention, a surface of the other surface (back surface) of the flexible base in the flexible die in which the unevenness for embossing of the planar pattern is formed on one surface (surface) of the flexible base. In a flexible die with a configuration in which irregularities are formed on the back side of the embossing irregularity forming area of the pattern, and a flexible die in which a blade group consisting of a plurality of pressing blades is formed on one surface (front surface) of the flexible base The structure which forms an unevenness | corrugation in the part corresponded to the back side of the formation area of the said blade group among the other surfaces (back surface) of a base can be mentioned. Furthermore, as the form of irregularities, the front shape is a quadrangle, a circle or an ellipse, etc., where the dot-shaped convex portions are arranged in a two-dimensional shape (matrix shape), or the front shape is a square, circle or ellipse. An example is unevenness in which dot-like concave portions such as shapes are arranged in a two-dimensional shape (matrix shape).

In the present invention, at least one of a linear pattern pressing blade or a linear pattern embossing unevenness is integrally formed on one surface of a flexible base, and the flexible base is wound around a cylindrical roller. a flexible die which, the flexible base of the other face, cutting blades or portion corresponding to the back side of the embossing irregularities of the linear pattern of the linear pattern, or cutting blades of the linear pattern And the linear recessed part extended along the part corresponded on the back side of the unevenness | corrugation for embossing of the said linear pattern is characterized by the above-mentioned.

  In this way, along the other side of the flexible base (the back side of the forming surface of the pressing blade and the embossing unevenness) along the portion corresponding to the back side of the embossing unevenness of the linear pattern pressing blade and the embossing By forming the linear concave portion extending in this manner, the bending rigidity (bending rigidity in the roller winding direction) of the press cutting blade and the embossing unevenness forming portion is weakened and is easily bent. As a result, the forming portion of the press cutting blade and the embossing unevenness is curved and deformed along the outer peripheral surface of the roller, and the flexible die can be mounted on the roller without “base floating”.

  Here, as in the present invention, when forming a linear recess on the back surface side of the embossing unevenness of the linear pattern or the pressing pattern of the linear pattern, due to the width of the linear recess, etc. In some cases, the strength of the press-cutting blade of the pattern and the embossing unevenness of the linear pattern is weakened and cannot withstand the force applied during processing. In consideration of such a point, one or a plurality of reinforcing convex portions (including convex stripes) may be formed in the linear concave portion.

The present invention is a flexible die in which an embossing unevenness of a planar pattern is integrally 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 linear recess is formed in a portion corresponding to the back side of the embossing unevenness of the planar pattern. More specifically, a linear recess having a shape corresponding to the contour of the embossing unevenness is formed in a portion corresponding to the back side of the embossing unevenness of the planar pattern.

  In this way, on the other side of the flexible base (the back side of the embossing unevenness forming surface), the part corresponding to the back side of the embossing unevenness of the planar pattern corresponds to the contour of the embossing unevenness. By forming the linear concave portion having the shape to be formed, the bending rigidity (bending rigidity in the roller winding direction) of the embossing unevenness forming portion is weakened and is easily bent. As a result, even when the embossing unevenness is a planar pattern, the embossing unevenness forming portion is curved and deformed along the outer peripheral surface of the roller, and the flexible die is placed on the roller. It becomes possible to install in the state without. In addition, the linear recessed part formed in the other surface of a flexible base is not restricted to the shape corresponding to the outline of the unevenness | corrugation for embossing, Arbitrary shapes may be sufficient.

  In this invention, if the unevenness is formed in the region inside the linear recess in the other surface (back surface) of the flexible base, the embossed unevenness forming portion is more easily bent.

  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, the concave and convex portions are formed on the back surface of the pressing base and the embossing unevenness on the back surface of the flexible base, so that the flexible die is formed into a cylinder such as a magnet roller. It is possible to wind the roller in a state where there is no “floating of the base”, and it is possible to accurately perform processes such as punching (embossing) and embossing.

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

<Embodiment 1>
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 Pa of the embossing convex portion 3 is a linear pattern, and has a shape in which “x” patterns extending along diagonal lines are combined inside a rectangle “□”. A plurality of processing patterns Pa ·· Pa are arranged in each of a direction orthogonal to the winding direction R of the flexible die 1 around the magnet roller 701 (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 magnet roller 701 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 such points, in the flexible die 1 of this example, the other surface of the flexible base 2 (the surface opposite to the surface on which the embossing convex portion 3 is formed (back surface)) is used for embossing. It is characterized in that the irregularities 4 are formed in a region corresponding to the back side of the portion where the convex portions 3 are formed. In this example, four processing patterns Pa ·· Pa are set as one pattern group, and a region Fa on the back side of the pattern group (region Fa having a larger area than the pattern group of four processing patterns Pa ·· Pa). Concavities and convexities 4 are formed. The unevenness 4 on the back surface of the flexible base 2 is formed in a form in which a large number of dot-like protrusions 4b... 4b are two-dimensionally arranged in the recess 4a.

  As described above, when the unevenness 4 is formed on the other surface (back surface) of the flexible base 2, the flexible base 2 can be wound around the magnet roller 701 without the “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 Pa as shown in FIG. 1, the back surface of the flexible base 2 is difficult because the embossing convex portion 3 is formed with a high rigidity and difficult to bend. 36, when it is wound around the magnet roller 701, the embossing convex portion 3 (803) is hardly deformed as shown in FIG. A “base float” occurs between them.

  On the other hand, even if the bending rigidity of the formation portion of the embossing convex portion 3 is high, if the irregularities 4 are formed in the region corresponding to the back side of the formation portion of the embossing convex portion 3, the flexible die 1 is formed. When the magnet roller 701 is wound, the embossing convex portion 3 is easily bent. 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 701, and the flexible die 1 does not have a “base lift” on the magnet roller 701. It becomes possible to install in a state. As a result, accurate embossing can be realized.

  Here, the depth of the concave portions 4a of the concave and convex portions 4 formed on the back surface of the flexible base 2, the dot pitch of the convex portions 4b, and the like are such that “base floating” does not occur when the flexible die 1 is wound around the magnet roller 701. In addition, the thickness of the flexible base 2, the bending rigidity of the embossing convex portion 3, the curvature of the outer peripheral surface of the magnet roller 701, and the like may be determined by experiments and calculations. .

  In the example shown in FIGS. 1 to 3, the unevenness 4 is formed in the region corresponding to the back side of the embossing convex portion 3 on the back surface of the flexible base 2. Alternatively, the unevenness 4 may be formed over almost the entire back surface of the flexible base 2.

  Further, as the irregularities 4 formed on the back surface of the flexible base 2, in addition to the irregularities in which a large number of dot-shaped convex portions 4b, 4b are two-dimensionally arranged in the concave portions 4a, the other surface of the flexible base 2 is provided. The unevenness may be a form in which a large number of dot-shaped concave portions are two-dimensionally arranged in the area Fa of the (back surface). Furthermore, the front shape of the convex part 4b (or concave part) of the unevenness | corrugation 4 is not restricted to a quadrangle | tetragon, Other arbitrary shapes, such as circular and an ellipse, may be sufficient.

-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 unevenness 4 (recessed portion 4a) on the back surface of the flexible base 2 is made in advance.

  (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) The photoresist films 21 and 22 on the front and back of the metal plate 10 are exposed and developed to form a resist pattern 21a and a resist pattern 22a having an opening 22b at a position corresponding to the concave portion 4a of the concave and convex portion 4 ( FIG. 6 (C)).

  (5) Etching of the metal plate 10 is started using the resist patterns 21a and 22a on the front and back sides of the metal plate 10 as a mask, and etching is performed when the progress of the etching reaches an amount corresponding to the depth of the concave portion 4a of the unevenness 4 It stops once (FIG. 6D). By this first etching, irregularities 4 are formed on the back surface of the flexible base 2 (see FIGS. 2 and 3). As described above, the depth of the concave portion 4a can be accurately controlled by first performing the formation of the concave and convex portion 4 (etching of the concave portion 4a). Therefore, the bending rigidity of the portion where the concave and convex portion 4 is formed can be easily adjusted. be able to.

  (6) As shown in FIG. 6 (E), a masking sheet 25 is attached to the back surface of the metal plate 10, and the irregularities 4 (concave portions 4a and convex portions 4b) formed by the previous etching are applied to the etching solution. In this state, the etching is started again. The etching is stopped when the second etching progresses to a predetermined depth ([the height of the embossing convex portion 3] − [the depth considering the concave portion 4a of the concave and convex portion 4]). . By such etching, as shown in FIG. 6 (F), the flexible base 2 and the protrusions (projections) having a trapezoidal cross section, that is, the embossing protrusions 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.

<Embodiment 2>
FIG. 9 is a front view showing another example of the flexible die of the present invention. FIG. 10 is a longitudinal sectional view of an essential part of the flexible die. FIG. 11 is a rear view of the flexible die of FIG.

  The flexible die 101 in this example is a rotary die used in a rotary processing apparatus that performs embossing, and the embossing convexity is formed on one surface (front surface) of the flexible base 102 as in the examples of FIGS. A portion 103 is formed. The processing pattern Pa of the embossing convex portion 103 is a linear pattern, and has a shape in which an “x” pattern extending along a diagonal line is combined inside a rectangle “□”. The processing patterns Pa ·· Pa are directions in a direction orthogonal to the winding direction R (hereinafter also referred to as roller winding direction R) of the flexible die 101 around the magnet roller 701 (see FIG. 4) and a direction along the roller winding direction R. A plurality of each is arranged.

  In the flexible die 101 of this example, as shown in FIGS. 10 and 11, embossing is performed on the other surface of the flexible base 102 (surface opposite to the surface on which the embossing convex portion 103 is formed (back surface)). A feature is that a linear concave portion (concave line) 104 extending with a uniform width is formed along a portion corresponding to the back side of the convex portion 103 for use.

  As described above, when the linear concave portion 104 is formed on the other surface (back surface) of the flexible base 102, the bending rigidity (the bending rigidity in the roller winding direction R) of the embossing convex portion 103 is weak. It becomes easy to bend. As a result, a portion where the embossing convex portion 103 is formed is curved and deformed along the outer peripheral surface of the magnet roller 701 (see FIG. 4), and the flexible die 101 is not lifted by the magnet roller 701. It becomes possible to install. As a result, accurate embossing can be realized.

  In the example shown in FIGS. 10 and 11, the linear concave portion 104 continuously extending along the portion corresponding to the back side of the embossing convex portion 103 is formed, but the embossing is not limited thereto. You may form the linear recessed part extended intermittently along the part corresponded on the back side of the convex part 103 for an object.

  Here, when the linear concave portion 104 is formed on the back side of the embossing convex portion 103 of the linear pattern as in the example of FIGS. 10 and 11, the width of the linear concave portion 104 is related to the relationship. In some cases, the strength of the embossing projection 103 is weakened and the force applied during embossing cannot be withstood. In consideration of such points, a plurality of reinforcing convex portions may be formed in the linear concave portion 104 (see FIG. 25). In addition, one or more protrusions may be formed in the linear recess 104 instead of such a protrusion.

-Manufacturing method-
Next, an example of a method for manufacturing the flexible die shown in FIGS. 9 to 11 will be described with reference to FIGS.

  (1) A photomask (negative film) having an exposure pattern corresponding to the shape of the embossing convex portion 103 in FIG. This photomask is of the same form as the photomask 23 shown in FIG. In addition, as shown in FIG. 13, a photomask (positive film) 124 having an exposure pattern 124a having a shape corresponding to the linear recess 104 on the back surface of the flexible base 102 is made in advance.

  (2) As shown in FIG. 12A, a photoresist is uniformly applied to the surface of the metal plate 110, and further, a photoresist is uniformly applied to the back surface of the metal plate 110, so that Photoresist films 121 and 122 are formed on the front and back surfaces, respectively.

  (3) As shown in FIG. 12B, a photomask (negative film) 23 (see FIG. 7) is placed and positioned on the photoresist film 121 on the surface of the metal plate 110, and the back surface of the metal plate 110 is also positioned. The photomask (positive film) 124 (see FIG. 13) is disposed and positioned on the photoresist film 122. Note that the photomask 23 on the front side of the metal plate 110 and the photomask 124 on the back side are aligned with each other with the resist mark as a reference, and one end portions of the photomasks 23 and 124 are joined with the adhesive tape 130. .

  (4) The photoresist films 121 and 122 on the front and back of the metal plate 110 are exposed and developed to form a resist pattern 121a and a resist pattern 122a having an opening 122b at a position corresponding to the linear recess 104 ( FIG. 12 (C)).

  (5) Etching of the metal plate 110 is started using the resist patterns 121a and 122a on the front and back of the metal plate 110 as a mask. The etching is stopped when the progress of the etching reaches a predetermined depth (a depth considering [the height of the embossing convex portion 3]). By such etching, as shown in FIG. 12D, the flexible base 102 and the trapezoidal protrusion (projection), that is, the embossing projection 103 are formed, and the back surface of the flexible base 102 is lined. A concave portion 104 (see FIG. 11) is formed. After this etching is completed, the resist patterns 121a and 122a remaining on the upper surface side and the back side of the flexible base 102 are removed.

  In addition, after forming the embossing convex part 103 by etching (after the process of FIG. 12D is completed), if necessary, both sides of the embossing convex part 103 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.

<Embodiment 3>
FIG. 14 is a front view showing an example of the flexible die of the present invention. FIG. 15 is a longitudinal sectional view of an essential part of the flexible die. FIG. 16 is a rear view of the flexible die of FIG.

  The flexible die 201 in this example is a rotary die used in a rotary processing apparatus that performs embossing, and an embossing convex portion 203 is formed in a predetermined pattern on one surface (front surface) of the flexible base 202. . The processing pattern of the embossing projection 203 is a heart-shaped planar pattern, and is orthogonal to the winding direction R of the flexible die 201 around the magnet roller 701 (see FIG. 4) (hereinafter also referred to as the roller winding direction R). Are arranged in each of the direction along the direction of rolling and the direction along the roller winding direction R.

  The flexible die 201 having the above structure is used by being wound around a magnet roller 701 of a rotary processing apparatus as shown in FIG. Here, in the flexible die 201 of this example, since the embossing convex portions 203... 203 having a planar pattern are formed, the rigidity of the portion where the embossing convex portions 203 are formed (bending in the roller winding direction R) High rigidity) makes it difficult to bend. In consideration of such points, in the flexible die 201 of this example, the other surface of the flexible base 202 (the surface opposite to the surface on which the embossing convex portion 203 is formed (back surface)) is used for embossing. A feature is that the unevenness 204 is formed in the region Fb corresponding to the back side of the formation portion of the protrusion 203. In this example, the unevenness 204 on the back surface of the flexible base 202 is formed in a form in which a large number of dot-shaped protrusions 204b... 204b are two-dimensionally arranged in the recess 204a.

  As described above, when the concave and convex portions 204 are formed on the other surface (back surface) of the flexible base 202, the bending rigidity (bending rigidity in the roller winding direction R) of the embossing convex portion 203 is weakened and bent. It becomes easy. As a result, the portion where the embossing convex portion 203 is formed is curved and deformed along the outer peripheral surface of the magnet roller 701 (see FIG. 4), and the flexible die 201 is not in the magnet roller 701 without “base floating”. It becomes possible to install. As a result, accurate embossing can be realized.

  The flexible die 201 of this example can be manufactured by an etching process basically similar to the process shown in FIG.

  As the unevenness 204 formed on the back surface of the flexible base 202, in addition to the unevenness in which a large number of dot-shaped protrusions 204b, 204b are two-dimensionally arranged in the recess 204a, the embossing protrusion 203 The unevenness | corrugation of the form which arrange | positioned many dot-shaped recessed parts in the two-dimensional form in the area | region Fb equivalent to the back side of a formation part may be sufficient. Furthermore, the front shape of the convex portion 204b (or concave portion) of the unevenness 204 is not limited to a quadrangle, and may be any other shape such as a circle or an ellipse.

<Embodiment 4>
FIG. 17 is a front view showing another example of the flexible die of the present invention. FIG. 18 is a longitudinal sectional view of a main part of the flexible die. FIG. 19 is a rear view of the flexible die of FIG.

  The flexible die 301 in this example is a rotary die used in a rotary processing apparatus that performs embossing, and an embossing convex portion 303 is formed on one surface (front surface) of the flexible base 302 as in the example of FIG. Is formed.

  The processing pattern of the embossing convex portion 303 is a heart-shaped planar pattern, and is orthogonal to the winding direction R (hereinafter also referred to as roller winding direction R) of the flexible die 301 around the magnet roller 701 (see FIG. 4). Are arranged in each of the direction along the direction of rolling and the direction along the roller winding direction R.

  In the flexible die 301 of this example, as shown in FIGS. 18 and 19, embossing is performed on the other surface of the flexible base 302 (surface opposite to the surface on which the embossing convex portion 303 is formed (back surface)). A feature is that a linear concave portion (recess) 304 is formed in a portion corresponding to the back side of the processing convex portion 303. The linear concave portion 304 in this example is a linear pattern having a shape corresponding to the contour of the embossing convex portion 303 (heart-shaped contour), and is formed along the back side of the contour of the embossing convex portion 303. It is formed with a uniform width.

  As described above, when the linear concave portion 304 is formed on the other surface (back surface) of the flexible base 302, the bending rigidity (the bending rigidity in the roller winding direction R) of the embossing convex portion 303 is weak. It becomes easy to bend. As a result, the portion where the embossing convex portion 303 is formed is curved and deformed along the outer peripheral surface of the magnet roller 701 (see FIG. 4), and the flexible die 301 is not in the state of “floating of the base” on the magnet roller 701. It becomes possible to install. As a result, accurate embossing can be realized.

  The flexible die 301 in this example can be manufactured by an etching process basically similar to the process shown in FIG.

  Here, as in this example, when the embossing convex portion 303 formed on one surface (front surface) of the flexible base 302 is a planar pattern and the linear concave portion 304 is formed on the back surface thereof, for example, FIG. As shown in FIG. 5, if the unevenness 314 is formed in the region inside the linear recess 304, the embossed unevenness 303 is more easily bent. In this case, the unevenness 314 may be an unevenness in which a large number of dot-shaped protrusions 314b,... 314b are two-dimensionally arranged in the recess 314a, or in a region inside the linear recess 304. The unevenness | corrugation of the form which has arrange | positioned many dot-shaped recessed parts in two dimensions may be sufficient. Furthermore, the front shape of the convex portion 314b (or the concave portion) of the unevenness 314 is not limited to a quadrangle, and may be any other shape such as a circle or an ellipse.

  For example, as shown in FIG. 21, a plurality of slit-like recesses (slit-like grooves) 324... 324 extending along a direction perpendicular to the roller winding direction R are formed in the region inside the linear recess 304. Alternatively, the concave and convex portions may be provided in a region inside the linear concave portion 304 by being formed at a predetermined pitch along the roller winding direction R. The slit-shaped recess 324 may be a single line.

  In the examples shown in FIGS. 17 to 19 described above, the linear concave portion 304 that continuously extends along the portion corresponding to the back side of the embossing convex portion 303 is formed, but the present invention is not limited thereto. You may form the linear recessed part extended intermittently along the part corresponded on the back side of the convex part 303 for embossing.

  Further, in the above example, the linear concave portion 304 has a shape corresponding to the contour of the embossing convex portion 303 (heart-shaped contour), but the other surface of the flexible base 302 is not limited thereto. Of the (back surface), a linear or curved linear concave portion may be formed in a portion corresponding to the back side of the embossing convex portion 303 of the planar pattern (for example, a portion inside the contour).

  Furthermore, in the above example, the linear concave portion 304 on the back surface of the flexible base 302 is processed by etching. However, the present invention is not limited to this, and the linear concave portion 304 may be formed by fine machining. .

<Embodiment 5>
FIG. 22 is a front view showing another example of the flexible die of the present invention. FIG. 23 is a longitudinal sectional view of an essential part of the flexible die. 24 is a rear view of the flexible die of FIG.

  The flexible die 401 in this example is a rotary die used in a rotary processing apparatus that performs embossing, and an embossing convex portion 403 is formed on one surface (front surface) of the flexible base 402. The processing pattern of the embossing convex portion 403 is a linear pattern imitating a heart-shaped outline, and the winding direction R of the flexible die 401 around the magnet roller 701 (see FIG. 4) (hereinafter, roller winding direction R). Are also arranged in each direction of the direction perpendicular to the direction and the direction along the roller winding direction R.

  In the flexible die 401 of this example, as shown in FIGS. 23 and 24, the other surface of the flexible base 402 (the surface opposite to the surface on which the embossing convex portion 403 is formed (back surface)) is linear. A feature is that a linear concave portion 404 extending in a uniform width is formed along a portion corresponding to the back side of the embossing convex portion 403 of the pattern.

  As described above, when the linear concave portion 404 is formed on the other surface (back surface) of the flexible base 402, the bending rigidity (bending rigidity in the roller winding direction R) of the embossing convex portion 403 is weak. It becomes easy to bend. As a result, a portion where the embossing convex portion 403 is formed is curved and deformed along the outer peripheral surface of the magnet roller 701 (see FIG. 4), and the flexible die 401 is not lifted by the magnet roller 701. It becomes possible to install. As a result, accurate embossing can be realized.

  The flexible die 401 in this example can be manufactured by an etching process basically similar to the process shown in FIG.

  Here, as shown in FIG. 23 and FIG. 24, when the linear concave portion 404 is formed on the back surface side of the embossing convex portion 403 of the linear pattern, the width of the linear concave portion 404 is related. In some cases, the strength of the portion where the embossing convex portion 403 is formed becomes weak and cannot withstand the force applied during embossing. Considering this point, for example, a plurality of reinforcing convex portions 414... 414 may be formed in a linear concave portion 404 as shown in FIG. Further, instead of the convex portion 414, one or a plurality of convex stripes may be formed in the linear concave portion 404.

  In the example shown in FIG. 23 and FIG. 24, the linear concave portion 404 that continuously extends along the portion corresponding to the back side of the embossing convex portion 403 is formed, but the present invention is not limited thereto. You may form the linear recessed part extended intermittently along the part corresponded on the back side of the convex part 403 for embossing.

  In the above example, the linear concave portion 404 on the back surface of the flexible base 402 is processed by etching. However, the present invention is not limited to this, and the linear concave portion 404 may be formed by fine machining. .

  In each of the above examples, an example in which the present invention is applied to a flexible die in which a convex portion for embossing having a predetermined pattern is formed on the surface of the flexible base has been shown. However, the present invention is not limited thereto, and the surface of the flexible base is not limited thereto. The present invention can also be applied to a flexible die in which an embossing recess having a predetermined pattern is formed, or a flexible die in which both an embossing protrusion and an embossing recess are formed on the surface of a flexible base.

<Embodiment 6>
FIG. 26 is a front view showing another example of the flexible die of the present invention. FIG. 27 is a longitudinal sectional view of an essential part of the flexible die. FIG. 28 is a rear view of the flexible die of FIG.

  The flexible die 501 in this example is a rotary die used by being wound around a magnet roller 701 (see FIG. 4) of a rotary processing apparatus, and a large number of pressing blades 503... 503 are provided on one surface (surface) of the flexible base 502. Is formed. The press cutting blades 503... 503 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 502 around the magnet roller 701 (hereinafter also referred to as roller winding direction R). ing.

  In the flexible die 501 formed in such a manner that a large number of the pressing blades 503... 503 are partially concentrated along the roller winding direction R, the rigidity (roller winding direction) of the forming portions of these pressing blades 503. R bending rigidity) is high and bending becomes difficult. In consideration of such points, in the flexible die 501 of this example, the formation of the pressing blade 503 among the other surface of the flexible base 502 (the surface opposite to the surface on which the pressing blade 503 is formed (back surface)). The feature is that the unevenness 504 is formed in the region Fc corresponding to the back side of the portion. In this example, the unevenness 504 on the back surface of the flexible base 502 is formed in a form in which a large number of dot-shaped protrusions 504b... 504b are two-dimensionally arranged in the recess 504a.

  In this way, when the concave and convex portions 504 are formed on the other surface (back surface) of the flexible base 502, the bending rigidity of the forming portion of the pressing blade 503 when the flexible die 501 is wound around the magnet roller 701 (see FIG. 4). (Bending rigidity in the roller winding direction R) is weakened and is easily bent. As a result, the forming portion of the press cutting blade 503 is curved and deformed along the outer peripheral surface of the magnet roller 701, so that the flexible die 501 can be mounted on the roller without “base floating”. As a result, accurate processing (cutting processing) can be realized.

  The flexible die 501 of this example can be manufactured by an etching process basically similar to the process shown in FIG. However, after forming the unevenness 504 on the back surface of the flexible base 502 by etching and forming a protrusion (projection) having a trapezoidal cross section on the surface of the flexible base 502 (after the process of FIG. 6F is completed), As shown in FIGS. 29 (A) to 29 (C), the both side surfaces of the trapezoidal projection 503 ′ corresponding to the pressing blade 503 are cut with a conical cutting tool 500 using an NC processing machine or the like. Then, by performing cutting edge processing, a press cutting blade 503 having the shape shown in FIG. 27 is obtained.

  In the example shown in FIGS. 26 to 28, the unevenness 504 is formed in the region corresponding to the back side of the formation portion of the press cutting blades 503... 503 on the back surface of the flexible base 502. Alternatively, the unevenness 504 may be formed over almost the entire back surface of the flexible base 502.

  Further, as the unevenness 504 formed on the back surface of the flexible base 502, in addition to the unevenness in which a large number of dot-shaped protrusions 504 b, 504 b are two-dimensionally arranged in the recess 504 a, the area on the back surface of the flexible base 502 The Fc may be a concavo-convex configuration in which a large number of dot-shaped concave portions are two-dimensionally arranged on the Fc.

  Furthermore, in the example shown in FIGS. 26 to 28, the unevenness 504 is formed on the back surface of the flexible base 502, but instead of the back surface of the flexible base 502, the portion where the press cutting blades 503. A linear recess as shown in FIGS. 10 and 23 may be formed in the region Fc corresponding to the back side.

  Here, in the example of FIG. 26 described above, an example in which the present invention is applied to the flexible die 501 in which a large number of pressing blades 503... 503 are formed along the roller winding direction R is shown. 30, for example, as shown in FIG. 30, a group of pressing blades 530... 530 in which a large number of pressing blades 513... 513 are arranged along a direction orthogonal to the roller winding direction R are arranged in the roller winding direction R. The present invention can also be applied to a flexible die 511 formed at a predetermined interval along.

<Other embodiments>
In each of the above examples, the present invention is applied to a flexible die in which only the embossing convex portion (or the embossing concave portion) is formed on the flexible base, or a flexible die in which only the pressing blade is formed on the flexible base. Although the example has been described, the present invention is not limited to this, and can be applied to a flexible die in which both the embossing unevenness and the pressing blade are formed on the surface of the flexible base.

  As an example thereof, as shown in FIG. 31, a rectangular pattern (square square) pressing blade 631 is formed on the surface of the flexible base 602, and the region surrounded by the pressing blade 631 is as shown in FIG. 1. An example is a flexible die 601 in which embossing convex portions 632 of the processing pattern Pa are formed at a plurality of locations.

  Also in such a flexible die 601, as shown in FIG. 32, on the other surface of the flexible base 602 (surface opposite to the surface on which the press cutting blade 631 and the embossing convex portion 632 are formed (back surface)). By forming the unevenness 604 in advance, the flexible die 601 can be mounted on the magnet roller 701 (see FIG. 4) without “base floating”. In addition, as the unevenness 604 formed on the back surface of the flexible base 602, there are many unevennesses on the back surface of the flexible base 602 in addition to the unevenness in which a large number of dot-shaped protrusions 604b,. Irregularities in a form in which the dot-shaped concave portions are two-dimensionally arranged may be used.

  In addition, in the example shown in FIG. 32, the unevenness 604 is formed on the back surface of the flexible base 602, but instead of the back surface of the flexible base 602, the back side of the pressing blade 631 and the embossing convex portion 632. You may form a linear recessed part as shown in FIG.10, FIG.23, etc. in the part corresponded to a back side.

  Here, in the present invention, the embossing unevenness and the shape of the pressing blade (processing pattern) formed on the flexible die are limited to the shape as shown in FIGS. 1 and 10 or the heart shape as shown in FIGS. For example, it may be a triangle or a circle, or any other shape such as a pattern such as an animal / animation character, a floral pattern, or a character.

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 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. FIG. 10 is a rear view of the flexible die of FIG. 9. It is a figure which shows typically an example of the manufacturing method of the flexible die of FIGS. It is a figure which shows typically the photomask used for the manufacturing method 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 | dye of FIG. It is a reverse view 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 | dye of FIG. FIG. 18 is a rear view of the flexible die of FIG. 17. It is a reverse view which shows the other example of the flexible die | dye of this invention. It is a reverse 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 reverse view of the flexible die | dye of FIG. It is a principal part enlarged 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 reverse view of the flexible die | dye of FIG. It is a figure which shows typically an example of the manufacturing method of the flexible die | dye of FIGS. 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 the other example of the flexible die for embossing. It is a figure which shows the problem which generate | occur | produces when winding the flexible die of FIG. 34 around a magnet roller.

Explanation of symbols

1,101 Flexible die 2,102 Flexible base 3,103 Embossed convex part (linear pattern)
4 Concavity and convexity 104 Linear concave portion 201, 301 Flexible die 202, 302 Flexible base 203, 303 Embossed convex portion (planar pattern)
204 Concavity and convexity 304 Linear concavity 501 Flexible die 502 Flexible base 503 Pressing blade 504 Concavity and convexity R Roller winding direction 701 Magnet roller

Claims (5)

At least one of the pressing blade or the embossing unevenness is integrally formed on one surface of the flexible base, and the flexible die is used by winding the flexible base around a cylindrical roller,
Wherein the flexible base of the other side, before SL cutting blades back or rear side of the formation region of the embossing irregularities forming region of, or back and forming regions of the embossing irregularities forming region of the cutting blades A flexible die, wherein a plurality of irregularities are formed in a region including a portion corresponding to the back side of the flexible die in a direction in which the flexible die is wound around a roller and in a direction perpendicular to the winding direction . A flexible die in which at least one of a linear pattern pressing blade or a linear pattern embossing unevenness is integrally formed on one surface of the flexible base, and the flexible base is wound around a cylindrical roller. There,
On the other surface of the flexible base, the linear pattern pressing blade or the portion corresponding to the back side of the embossing unevenness of the linear pattern, or the linear pattern pressing blade and the embossing of the linear pattern The flexible die | dye characterized by the linear recessed part extended along the part corresponded on the back side of the unevenness | corrugation for a process . The flexible die according to claim 2,
One or more convex parts are formed in the linear concave part, The flexible die | dye characterized by the above-mentioned. An embossing unevenness of a planar pattern is integrally formed on one surface of the flexible base, and is a flexible die that is used by winding the flexible base around a cylindrical roller,
On the other surface of the flexible base, a line corresponding to the contour of the embossing unevenness of the planar pattern is a line corresponding to the back side of the embossing unevenness of the planar pattern. A flexible die characterized in that a concave portion is formed along the back side of the embossed contour . The flexible die according to claim 4,
On the other surface of the flexible base, irregularities are formed in a region inside the linear concave portion .

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