JP5995153B2 - Manufacturing method of manufacturing system for laminated body for sealing bag - Google Patents

Description

  The present invention relates to a method for manufacturing a projection plate cylinder for manufacturing a projection plate cylinder which is used for manufacturing a laminated body for a sealed bag and includes a large number of projections on the surface.

It is known that a laminate in which a plurality of plastic films are laminated has a high tearing strength and is hardly broken even when an external force is applied.
A sealed bag formed of a laminate is difficult to open by hand due to the high tear strength of the material. For this reason, a technique has been developed in which an easy-to-open portion formed by forming a large number of openings in a film is provided at the end of the sealing bag.

  When forming an easy-to-open part at the end of the sealing bag, the surface of the film before pressing the laminate is pressed against the abrasive surface of the grindstone roll to create a rough surface, and many scratches are formed on this film. ing. However, such a method of forming a large number of scratches on the film using a grindstone roll has a problem that it is difficult to accurately determine the width of the easy-opening portion or the gap between the easy-opening portions.

Japanese Patent No. 2994103

  The present invention has been made in consideration of such points, and is used for manufacturing a laminated body for a sealed bag, and can easily form an opening-opening portion on the laminated body for a sealed bag, on the surface. It is an object of the present invention to provide a method for manufacturing a stencil cylinder capable of easily manufacturing a stencil cylinder including a large number of protrusions.

  The present invention provides a blank printing cylinder having a copper layer on the surface thereof in a method for producing a bump cylinder used to produce a laminate for a sealed bag and for producing a bump cylinder having a large number of protrusions on the surface. A step of applying a photosensitive material to the copper layer on the surface of the blank plate cylinder, a step of exposing and developing the photosensitive material to form a resist in a portion corresponding to the protrusion, and a copper on the surface of the blank plate cylinder First etching is performed on the layer using a first etching solution, forming a protrusion on the copper layer, removing a resist on the protrusion, and using a second etching solution on the protrusion And a step of bending the vertical cross-sectional shape of the tip of each protrusion and a step of applying chrome plating to the entire copper layer.

  In the present invention, the height of each projection is 290 to 500 μm, and the planar shape of each projection tip has an elongated shape having a length in the longitudinal direction and a length in the lateral direction, and at least in the lateral direction. A method for manufacturing a relief cylinder, characterized in that the length is 0.5 to 30 μm.

  The present invention is the method for manufacturing a projection plate cylinder, wherein the planar shape of each projection tip has a linear elongated shape.

  The present invention is the method for manufacturing a projection plate cylinder, wherein the planar shape of each projection tip has a curved elongated shape.

  In the present invention, the protrusions are arranged on the surface of the plate cylinder so as to be separated from each other. When an arbitrary protrusion is taken, the distance between the protrusion and the adjacent protrusion is 0.5 to 5.0 mm. This is a method for manufacturing a relief printing cylinder.

  As described above, according to the present invention, it is possible to easily and accurately manufacture a projection plate cylinder having a large number of projections and having the vertical sectional shape of each projection tip curved.

FIGS. 1A to 1G are process diagrams showing a method of manufacturing a relief cylinder according to the first embodiment of the present invention. FIG. 2 is a view showing protrusions of a relief plate cylinder formed by etching. FIGS. 3A to 3C are views showing a state in which openings are formed in the film-like PET layer by the protrusions of the protruding plate cylinder. 4A is a plan view showing the protrusions of the stencil cylinder, FIG. 4B is a side view showing the protrusions, and FIGS. 4C to 4D show modified examples of the protrusions of the stencil cylinder. It is a top view. FIG. 5 is a cross-sectional view showing a blank plate cylinder. FIG. 6 is a view showing a system for forming a hole in a film using a relief plate cylinder. FIG. 7 is a view showing an aperture unit composed of a projection plate cylinder and a rubber roller. FIG. 8 is a view showing a sealed bag. FIG. 9 is a view showing a laminate for producing a sealed bag. FIG. 10 is a diagram showing an arrangement state of protrusions of the projection plate cylinder. FIG. 11 is a diagram showing a cross-sectional shape of the projection of the projection plate cylinder. FIG. 12 is a view showing a system for forming an opening in a film using a relief printing cylinder according to a second embodiment of the present invention. FIG. 13 is a view showing an aperture unit composed of a projection plate cylinder and a rubber roller. FIG. 14 is a view showing a sealed bag. FIG. 15 is a view showing a modified example of the sealing bag. FIG. 16 is a perspective view showing a protruding plate cylinder.

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  First, referring to FIGS. 8 and 9, a laminated body for a sealed bag and a sealed bag manufactured by a protruding plate cylinder will be described.

  As shown in FIGS. 8 and 9, the sealing bag 10 is formed by molding a sealing bag laminate 20 into a bag shape, and the sealing bag 10 has heat seal portions 11 a at the upper end portion and the lower end portion.

  Further, the sealing bag 10 has a back seal portion 11b and a band-shaped opening region 12 in the upper portion. Furthermore, in order to open the sealing bag 10 along the belt-shaped opening region 12, a start-side opening easy portion 13 is provided on the starting end side in the opening region 12 of the sealing bag 10, and an end-side opening is easy on the terminal side of the opening region 12. A portion 14 is provided.

  Among these, the terminal side easy-to-open portion 13 of the opening region 12 is a portion obtained by forming a large number of openings 21 a in the PET layer 21 of the laminate 12, and can be easily obtained when opening the opening region 12. This is the part that can be cut.

  The end-side opening easy portion 14 is a portion obtained by forming a large number of holes 21 a in the PET layer 21 of the laminate 12, and becomes an end of opening of the opening region 12 when opening the opening region 12. Thus, the unsealed region 12 can be cut into a strip shape.

  As described above, the sealed bag 10 is obtained by molding the laminate 20 shown in FIG. 9 into a bag shape and applying heat sealing. The laminate 20 is obtained by laminating a PET layer 21 having a thickness of 12 μm, a PE layer 22 having a thickness of 15 μm, an aluminum layer 23 having a thickness of 7 μm, a PE layer 24 having a thickness of 15 μm, and a heat seal layer 25 having a thickness of 30 μm. .

  Among these, the heat seal layer 25 constitutes the innermost layer, and a PE layer can be used as the heat seal layer.

  Further, the PET layer 21 constitutes the outermost layer, and a plurality of apertures 21a are formed in the start end side easy-to-open portion 13 and the terminal end-side easy open portion 14 of the PET layer 21, and these start end side easy-to-open portions 13 and The end-side opening easy portion 14 can be easily opened by providing an opening 21 a in the PET layer 21.

  Furthermore, a printing ink portion 26 formed by printing ink is provided on the inner surface of the PET layer 21.

  Next, referring to FIGS. 6 and 7, a manufacturing system for the laminated body 20 for the sealing bag 10, that is, a system for forming openings in the film using a later-described projecting plate cylinder will be described.

  As shown in FIGS. 6 and 7, the laminate manufacturing system 30 is a system that forms a large number of apertures 21 a in the film-like PET layer 21 that is the outermost layer of the laminate 20. Such a laminate manufacturing system 30 has the same structure as the paper feeding unit 30A for feeding out the film-like PET layer 21, the printing unit 31 having the plate cylinder roller 31a, and the printing unit 31. An opening unit 33 for forming holes, and a winding unit 32 disposed on the downstream side of the printing unit 31 and the opening unit 33 are provided. The printing unit 31 performs printing on the film-like PET layer 21, and a plurality of sets of the printing units 31 are arranged in parallel as necessary. When a plurality of printing units 31 are arranged side by side, a correction roller can be provided between the adjacent printing units 31 to correct the printing position deviation.

  The opening unit 33 can be installed before the printing unit 31 or between a plurality of printing units 31. Hereinafter, as an example, a manufacturing system in the case where the opening unit 33 is installed on the downstream side of the printing unit 31 will be described.

  As shown in FIG. 7, the opening unit 33 has a protruding plate cylinder 35 having a large number of protrusions 35a on the surface, and an impression cylinder 34 in which a buffer material (adhesive tape or the like) is wound around a metal roll.

  The plate cylinder roller 31a of the printing unit 31 and the protruding plate cylinder 35 of the aperture unit 33 are set to have the same diameter, or the protruding plate cylinder 35 has a slightly larger diameter, and are driven from the same drive source. In this way, they are operatively connected via a gear device. Thus, by rotating the plate cylinder roller 31a and the protruding plate cylinder 35 at the same peripheral speed, a certain tension is applied to the film-like PET layer 21, and the positional deviation between the printing unit 31 and the aperture unit 33 is achieved. Make sure that does not occur. As a result, the start side open easy part 13 and the end side open easy part 14 can be accurately formed on the start side and the end side of the opening region 12 of the sealing bag 10 respectively.

  6 and 7, a film-like PET layer 21 is prepared, and printing is performed on one surface of the film-like PET layer 24 by the plate cylinder roller 31 a of the printing unit 31. Next, the film-like PET layer 24 is guided between the protruding plate cylinder 35 and the impression cylinder 34 of the aperture unit 33. The film-like PET layer 21 guided between the projection plate cylinder 35 and the impression cylinder 34 is pressed between the projection plate cylinder 35 and the impression cylinder 34, and the easy-opening portions 13, 14 of the film-like PET layer 21. A large number of apertures 21a are formed by the projections 35a of the projection plate cylinder 35 at the portions corresponding to the above.

  The film-like PET layer 21 in which the printing ink part 26 is provided on one side in this way and a large number of apertures 21a are formed is then sent to the winding part 32 and wound. Next, the PE layer 22, the aluminum layer 23, the PE layer 24, and the heat seal layer 25 are laminated on the film-like PET layer 21 to obtain a laminated body 20 for a sealing bag.

  Next, with reference to FIGS. 1 to 5, a method for manufacturing the stencil cylinder 35 having a large number of protrusions 35a on the surface will be described.

  First, a blank plate cylinder 35A for the projection plate cylinder 35 is prepared (see FIG. 5).

  That is, as shown in FIG. 5, the blank plate cylinder 35 </ b> A has a steel cylinder 1 and a copper layer 2 provided on the steel cylinder 1, and by performing a forming process on the copper layer 2, A large number of protrusions 35a are formed.

  Hereinafter, the manufacturing method of the projection cylinder 35A will be described in detail with reference to FIGS. 1 (a), (b), (c), (d), (e), (f), and (g) and FIG.

  First, as shown in FIG. 1A, the photosensitive material 3 is applied to the entire area of the blank plate cylinder 35A on the copper layer 2.

  Next, a desired position of the photosensitive material 3 provided on the copper layer 2 of the blank plate cylinder 35A is exposed (FIG. 1B) and developed to form a resist 4 on the copper layer 2 (FIG. 1). 1 (c)).

  In this state, the first etching is performed on the copper layer 2 provided on the surface of the blank plate cylinder 35A using the first etching solution, whereby the protrusion 35a can be formed on the copper layer 2 (FIG. 1 (d)).

  At this time, a cupric chloride etchant can be used as the first etchant.

The etching conditions for the first etching are as follows.
Copper chloride concentration: 43-47 g / l, hydrochloric acid concentration: 48-52 g / l
Next, the resist 4 is removed from the tip 35b of the protrusion 35a (FIG. 1E).

  After that, the second etching is performed again on the copper layer 2 having the protrusions 35a using the second etching solution (FIG. 1 (f)). This makes it possible to round (bend) the vertical cross-sectional shape at the tip 35b of the protrusion 35a.

  At this time, the second etching solution can be the same as the first etching solution, and the etching conditions for the second etching are the same as the etching conditions for the first etching.

  Next, a chrome plating layer (thickness 5 to 8 μm) 5 can be formed on the copper layer 2 by covering the entire area of the copper layer 2 having the protrusions 35 a and performing chrome plating. The surface hardness can be increased.

  In this way, the projection plate cylinder 35 having a large number of projections 35a on the surface can be manufactured, and in this case, the vertical cross-sectional shape at the tip 35b of the projection 35a can be rounded.

  In this way, for example, the projection plate cylinder 35 having the projections 35a can be manufactured in a very short time and with high accuracy as compared with the case where the projection plate cylinder is manufactured by lathe processing.

  In the state shown in FIG. 2, the tip 35b of the projection 35a is protected by the resist 4, so that it is not corroded and has a flat shape.

  According to the present invention, as shown in FIGS. 1E and 1F, after the resist 4 is removed, the copper layer 2 having the protrusions 35a is subjected to the second etching, whereby the tip portions of the protrusions 35a. The shape of 35b can be rounded.

A processing 3 (a) (b) ( c), the operation will be described for forming an opening 24a to the film-like PET layer 24 with protrusions 35.

As shown in FIG. 3 (a), when forming the opening 24a to the film-like PET layer 24 with protrusions 35, by rounding the shape of the tip portion 35b of the projection 35a, the film-like PET layer 24 On the other hand, the opening 24a can be formed smoothly. Disconnect In this case, by rounding the shape of the tip portion 35b of the projections 35a, never scrap caused to form an opening 24a into a film PE T layer 24 occurs during the formation of this for opening 24a The scum is not scattered.

  That is, as shown in FIGS. 3B and 3C, when the tip 35b of the projection 35a has a divergent shape toward the tip, an opening 24a is formed in the film-like PET layer 24 by the projection 35a. In this case, a punched piece 24b is generated in the film-like PET layer 24, and the opening 24a of the film-like PET layer 24 becomes large.

  On the other hand, according to the present invention, the shape of the tip 35b of the projection 35a is rounded so that the projection 24a can be used to smoothly open the opening 24a without forming the punched piece 24b in the film-like PET layer 24. Can be formed.

  Next, the shape of the projection 35a of the projection plate cylinder 35 will be further described with reference to FIGS.

  4A is a plan view showing the protrusion 35a, and FIG. 4B is a side view showing the protrusion 35a.

As shown in FIG. 4 (a), an ellipse having an elongated shape with a tip portion 35b in the longitudinal direction of the length as viewed from above and lateral direction of the length of the projection 35a, for example, the long sides D ₁ and short side D ₂ Has a shape.

In this case, the long side (longitudinal length) _{D 1} is 115μm or less, a short side (length in the short direction) _{D 2} has a 30μm or less, for example 0.5 to 30 m. In this case, the short side _{D 2} is preferably has a 3 to 30 .mu.m.

  As shown in FIG. 4B, the height h of the protrusion 35a is 290 μm or more, for example, 290 to 500 μm. In this case, the height h of the protrusion 35a is preferably 290 to 400 μm. When the height h of the protrusion 35a is 290 μm or less, it is difficult to accurately form the opening 24a in the film-like PET layer 24, and when it is 500 μm or more, it is difficult to accurately form the protrusion 35a.

  Thus, the opening 21a can be smoothly formed in the film-like PET layer 21 by reducing the planar shape of the tip 35b of the protrusion 35a and increasing the height h of the protrusion 35a.

  In addition, although the example in which the planar shape of the tip portion 35b of the protruding portion 35a has an elliptical shape has been shown, the present invention is not limited thereto, and may have an elongated shape having a length in the short side direction of 30 μm or less. If the length of the planar shape of the tip portion 35b in the short direction is 30 μm or more, the stencil cylinder is rapidly deteriorated and stable production is difficult. Further, the elongated shape of the distal end portion 35b only needs to have a length in the short side direction of 30 μm or less, and there are few problems even if the length in the longitudinal direction is somewhat longer.

  For example, as shown in FIG. 4C, the planar shape of the tip 35b of the projection 35a may be a linear elongated shape.

  Or as shown in FIG.4 (d), it is good also considering the planar shape of the front-end | tip part 35b of the processus | protrusion 35a as an L-shaped elongate shape.

  Further, as shown in FIG. 4 (e), the planar shape of the tip 35b of the projection 35a may be an arcuate elongated shape.

  Each of the L-shaped and arc-shaped elongated shapes shown in FIGS. 4D and 4E is not a linear elongated shape but a curved elongated shape.

  Next, the arrangement state and shape of the projections 35a formed on the surface of the projection plate cylinder 35 will be further described with reference to FIGS.

  As shown in FIG. 10, a large number of projections 35a are arranged on the surface of the projection plate cylinder 35 so as to be separated from each other, and the projections 35a, for example, four corner points of a rectangle composed of a long side b and a short side a, A point can be constructed.

  In FIG. 10, the length of the long side b of the rectangle formed by the four protrusions 35a is 2.0 to 3.3 mm, and the length of the short side a is 1.0 to 1.5 mm. .

  In FIG. 10, when an arbitrary protrusion 35a is taken, the distance L between the protrusion 35a and the protrusion 35a ′ adjacent to the arbitrary protrusion 35a is 0.5 to 5.0 mm. preferable.

  When the distance L between any projection 35a and the adjacent projection 35a 'is 0.5 or less, the gap between the openings 24a of the film-like PET layer 24 is reduced, and the strength of the easy-opening portions 13 and 14 is increased. It is also conceivable that the easy-opening portions 13 and 14 are damaged unintentionally.

  On the other hand, when the distance L between the arbitrary protrusion 35a and the adjacent protrusion 35 'is 5.0 mm or more, the gap between the openings 24a of the film-like PET layer 24 becomes large, and the easy-open portions 13 and 14 The strength is maintained high, and it becomes difficult to open the easy-opening portions 13 and 14.

  Incidentally, as shown in FIG. 11A, the height h of the projection 35a formed on the surface of the projection plate cylinder 35 is 290 to 500 μm as described above.

  On the other hand, as shown in FIG. 11 (b), cells are formed for ink filling in a normal gravure printing cylinder. The cell has a length of 100 to 250 μm, and the depth of the cell with respect to the surface position before processing is 20 to 80 μm.

  On the other hand, in the present invention, as shown in FIG. 11A, the height h of the projection 35a of the projection plate cylinder 35 is 290 to 500 μm. For this reason, it is necessary to etch away the copper layer 2 of the blank plate cylinder 35A by a height of 290 to 500 μm with respect to the surface position before processing, and the projection plate cylinder 35 has a completely different structure from a normal gravure plate cylinder. The method of manufacturing the projection plate cylinder 35 is also completely different from the method of manufacturing a normal gravure plate cylinder.

Second Embodiment Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

  First, referring to FIG. 14, a sealed bag manufactured by a protruding plate cylinder will be described.

  As shown in FIG. 14, the sealing bag 10 is formed by molding a sealing bag laminate 20 into a bag shape, and the sealing bag 10 has heat seal portions 11a at the upper end portion and the lower end portion.

  Further, the sealing bag 10 has a back seal portion 11b, and the sealing bag 10 is opened at the side edge of the sealing bag 10 over the entire length in the vertical direction so that it can be easily opened from a desired position of the side edge. An easy portion 13 is provided, and the back seal portion 11b is also provided with an end-side opening easy portion 14 over the entire length in the vertical direction.

  Among these, the terminal side opening easy part 13 is a part obtained by forming a large number of openings 21a in the PET layer 21 of the laminate 12, and can be easily cut when the sealing bag 10 is opened. This is a possible part.

  The end-side opening easy portion 14 is a portion obtained by forming a large number of holes 21 a in the PET layer 21 of the laminate 12. When the sealing bag 10 is opened, the end-side opening easy-to-open portion 14 becomes an end of opening. This is the part that can be cut cleanly.

  As described above, the sealed bag 10 is obtained by molding the laminate 20 shown in FIG. 9 into a bag shape and applying heat sealing. The laminate 20 is obtained by laminating a PET layer 21 having a thickness of 12 μm, a PE layer 22 having a thickness of 15 μm, an aluminum layer 23 having a thickness of 7 μm, a PE layer 24 having a thickness of 15 μm, and a heat seal layer 25 having a thickness of 30 μm. .

  Among these, the heat seal layer 25 constitutes the innermost layer, and a PE layer can be used as the heat seal layer.

  Further, the PET layer 21 constitutes the outermost layer, and a plurality of apertures 21a are formed in the start end side easy-to-open portion 13 and the terminal end-side easy open portion 14 of the PET layer 21, and these start end side easy-to-open portions 13 and The end-side opening easy portion 14 can be easily opened by providing an opening 21 a in the PET layer 21.

  Furthermore, a printing ink portion 26 formed by printing ink is provided on the inner surface of the PET layer 21.

  The sealing bag 10 is not limited to the one shown in FIG. 14, and the sealing bag laminate 20 is formed into a bag shape, and the left side edge and the lower end edge are heat-sealed to form the heat seal portion 11 a. (FIG. 15).

  In the sealing bag 10 shown in FIG. 15, a start side opening easy portion 13 is provided on the right side edge over the entire length in the vertical direction so that the sealing bag 10 can be easily opened from a desired position of the side edge. ing.

  Next, with reference to FIGS. 12, 13, and 16, a manufacturing system for the laminate 20 for the sealing bag 10, that is, a system for forming an opening in the film using a later-described projection plate cylinder will be described.

  As shown in FIGS. 12 and 13, the laminate manufacturing system 30 is a system that forms a large number of apertures 21 a in the film-like PET layer 21 that is the outermost layer of the laminate 20. Such a laminate manufacturing system 30 includes a sheet feeding unit 30A that feeds the film-like PET layer 21, an opening device 36 that is disposed on the downstream side of the sheet feeding unit 30A, and a downstream side of the opening device 36. And a winding unit 32 arranged. In addition, the film-like PET layer 21 set in the paper feeding unit 30A is printed in advance. That is, as shown in FIG. 14, the easy opening portions 13 and 14 of the sealing bag 10 extend along the entire length in the longitudinal direction of the sealing bag 10, and the direction D in which the easy opening portions 13 and 14 extend is a film-like PET layer. 21 is not necessary to synchronize between the printing unit 31 and the opening device 36, and the film-like PET layer 21 set in the paper feeding unit 30A as shown in FIG. There is no problem even if printing is performed in advance.

  As shown in FIGS. 13 and 16, the opening device 36 has a protruding plate cylinder 35 having a large number of protrusions 35a on the surface, and an impression cylinder 34 in which a buffer material (adhesive tape or the like) is wound around a metal roll. Yes. In this case, a large number of projections 35a are provided in the projection arrangement region 35A of the projection plate cylinder 35 over the entire circumference (FIG. 16).

  12 and 13, the film-like PET layer 21 that has been printed in advance is set in the paper feeding unit 30 </ b> A, and the film-like PET layer 21 is fed out from the paper feeding unit 30 </ b> A. Next, the film-like PET layer 21 is guided between the protruding plate cylinder 35 and the impression cylinder 34 of the opening device 36. The film-like PET layer 21 guided between the projection plate cylinder 35 and the impression cylinder 34 is pressed between the projection plate cylinder 35 and the impression cylinder 34, and the easy-opening portions 13, 14 of the film-like PET layer 21. A large number of apertures 21a are formed by the projections 35a of the projection plate cylinder 35 at the portions corresponding to the above.

  The film-like PET layer 21 in which a large number of apertures 21a are formed in this way is then sent to the winding unit 32 and wound. Next, the PE layer 22, the aluminum layer 23, the PE layer 24, and the heat seal layer 25 are laminated on the film-like PET layer 21 to obtain a laminated body 20 for a sealing bag.

  In the second embodiment, an example in which the laminate 20 is manufactured by the manufacturing system 30 that does not include the printing unit 31 as shown in FIGS. 12 and 13 is shown, but the present invention is not limited to this, and FIGS. The laminated body 20 can also be manufactured by the manufacturing apparatus 30 including the printing unit 31 as shown in FIG.

  That is, since the easy-opening portions 13 and 14 of the sealing bag 10 extend along the entire length in the vertical direction of the sealing bag 10, it is not always necessary to synchronize between the printing unit 31 and the opening device 36. 7 and the manufacturing device 30 including the printing unit 31 shown in FIG. 7, the printing unit 31 and the opening device 36 are synchronized to form the printing ink portion 26 and the easy-to-open portions 13 and 14 with high accuracy. You can also.

DESCRIPTION OF SYMBOLS 1 Steel cylinder 2 Copper layer 3 Photosensitive material 4 Resist 5 Chromium plating layer 10 Sealing bags 13 and 14 Easy opening part 20 Laminate body 21 PET layer 21a Opening 22 PE layer 23 Aluminum layer 24 PE layer 25 Heat seal layer 26 Printing ink Section 30 Laminate Manufacturing System 30A Paper Feed Section 31 Printing Unit 33 Opening Unit 34 Impression Cylinder 35 Projection Plate Cylinder 35A Blank Plate Cylinder 35a Projection 35b Tip 36 Opening Device

Claims (3)

A paper feed unit for feeding out the substrate ;
A printing unit that is provided on the downstream side of the paper feeding unit and that performs printing on the substrate to form a printing ink unit;
A cylindrical projection plate cylinder including a plurality of protrusions on the surface is provided on the downstream side of the printing unit, and a plurality of openings are provided in the base material, and the opening easy portion is formed by the openings. An opening unit;
A winding unit that is provided on the downstream side of the printing unit and the opening unit and winds up the substrate;
In the manufacturing method of the manufacturing system of the layered product for sealed bags, comprising the lamination part which laminates at least a heat seal layer on the printing ink part among the base materials wound up by the winding part ,
This manufacturing method includes a method of manufacturing the projection plate cylinder,
The method of manufacturing the projection plate cylinder includes a cylindrical steel cylinder, and a step of preparing a cylindrical blank plate cylinder having a copper layer provided on the surface of the steel cylinder,
Applying a photosensitive material to the copper layer on the surface of the cylindrical blank plate cylinder;
A step of exposing and developing the photosensitive material to form a resist in a portion corresponding to the protrusion;
Applying a first etching to the copper layer on the surface of the blank plate cylinder using a first etching solution to form a protrusion having a divergent tip on the copper layer;
Removing the resist on the protrusions;
Performing a second etching on the protrusion using a second etching solution, removing a corner portion of each divergent protrusion tip, and curving the vertical cross-sectional shape;
Applying chrome plating to the entire copper layer;
The manufacturing method of the manufacturing system of the laminated body for sealed bags characterized by comprising. The manufacturing method of the manufacturing system of the laminated body for sealed bags according to claim 1, wherein the lamination part is laminated by providing at least an intermediate layer between the printing ink part and the heat seal layer. The said intermediate | middle layer is aluminum, The manufacturing method of the manufacturing system of the laminated body for sealed bags of Claim 2 characterized by the above-mentioned .

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