JP2018176662A - Gravure plate and packaging bag - Google Patents

Abstract

An object of the present invention is to provide a packaging bag having a sealing function and having a new opening function by forming perforations by a gravure printing machine and laminating a sealant film or the like to prepare a laminated film for packaging.
An embedded portion is formed on a surface of a cylindrical gravure plate in which a plate-like or linear embedding jig having a substantially circular, substantially square or linear perforation blade is embedded. The plate-like or linear embedding jig having the perforated blade is fixed to a gravure plate using an adhesive, an adhesive tape, or a core of a gravure plate using a bolt, and mounted, and then a gravure printing machine A perforated blade is formed, and further, a sealant film etc. is used as a laminated packaging material, and it is set as the packaging bag which provided new openability.
[Selected figure] Figure 1

Description

A perforation process is often used to improve the openability of the packaging material. Although perforations are also used for paper container products, perforations are provided through the packaging material because they are not packaging materials that are originally required to have sealing properties. A soft packaging material using a film is formed by applying perforations to a part of the film laminated to be required to have the function of sealing the contents, particularly a stretched film such as nylon, polyester or polypropylene which is difficult to cut. It is required to BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to the provision of the openability of a laminated packaging bag mainly made of a film.

The openability of the soft packaging material is devised by various methods. One of the methods is to make perforations in the laminated soft packaging material. Recently, there is also a soft-packaged product which is perforated by laser light to improve its openability. However, as a general method, it is a method of making a perforation physically using a perforation blade. One of them is a method of passing a base film between a rotary die cutter provided with a cutting blade and an anvil roll to provide a desired cut portion, a method using an anvil roll provided with a cushion layer for cutting edge protection, etc. Has been proposed.

In addition, there is also a packaging material which can be opened from anywhere in the seal part of the soft packaging material by making a fine cut penetrating in advance in the part to be the seal part of the packaged product. As a method of making this minute cut, a method is proposed in which a bladed roller and a receiving roller are provided with an adhesive layer and further coated with a non-adhesive layer.
In addition, proposals have been made on methods and packaging forms for enhancing the openability of many soft packaging materials. Some of them are described in the prior art section.

JP-A-3-32598 JP 9-315444 A Japanese Patent Laid-Open No. 2000-108094 Japanese Patent Application Laid-Open No. 2001-18991 Patent document 1: JP-A-2001-287767 Japanese Patent Application Laid-Open No. 2002-255199 Patent document 1: JP-A-2005-162303 JP 2010-30691

  An object of the present invention is to make a packaging bag having a sealing function and having a new opening function by forming perforations by a gravure printing machine and laminating a sealant film or the like to create a laminated film for packaging.

  In the gravure plate of the present invention, a buried portion is formed on the surface of a cylindrical gravure plate in which a plate-like embedding jig having a substantially circular or substantially square perforated blade is embedded, The embedding jig is fixed and mounted, and the surface of the plate-like embedding jig excluding the perforation blade is positioned on the circumferential surface of the gravure plate.

  In another gravure plate of the present invention, a buried portion is formed on the surface of a cylindrical gravure plate in which a linear embedding jig having straight perforations is embedded, and the perforated portion has the perforation blades. A linear embedding jig is fixed and mounted, and the surface of the linear embedding jig having the perforation blade excluding the perforation blade is located on the circumferential surface of the gravure plate, or the perforation A peripheral portion of the linear embedding jig having a blade except a perforation blade is positioned lower than a circumferential surface of the gravure plate and is formed as a groove.

In these gravure plates of the present invention, the gravure plate and a synthetic resin coated on the surface side of the woven fabric, and further a coated fabric coated with a non-silicon release agent is attached to the back surface side of the coated fabric. With a gravure printing machine and a nip impression cylinder wound around the outer periphery of the core material of the nip impression cylinder via the coated adhesive (hereinafter referred to as coated cloth and adhesive generically and referred to as “self-adhesive layer”) Printing is performed by passing the film printed by the preceding printing unit between the gravure plate provided with perforations and the nip impression cylinder provided with the self-adhesive layer on the outer periphery using the subsequent printing unit subjected to gravure printing It is possible to register perforations with a gravure plate by aligning a register with a pattern, and by laminating with a sealant film, it is possible to prepare a laminated film for packaging having perforations.

  A description of the Guavia version of the present invention having such features will be given with reference to the drawings.

  FIG. 1 is a view showing a buried portion (2) provided in a gravure plate (1) and a plate-like buried jig (4) provided with a perforated blade (3). When the plate-like embedding jig (4) is integrated with the embedding portion (2), the gravure plate (1) of the present invention is obtained. Y-Y shown in FIG. 1 represents the cross section shown in FIG. 3 to FIG. 5, and X-X and X'-X 'represent the cross section shown in FIG. 8 to FIG.

  FIG. 2 is a view showing a buried portion (2) provided in the gravure plate (1) and a linear buried jig (5) provided with a perforated blade (3). When the linear embedding jig (5) is integrated with the embedding portion (2), the gravure plate (1) of the present invention is obtained. ZZ and Z'-Z 'shown in FIG. 2 represent the cross-sectional portions shown in FIG. 6 to FIG. 7 and FIG. 16 to FIG.

  3 to 5 are cross sections of Y-Y when the plate-like embedding jig (4) is integrated with the embedding portion (2) of the gravure plate (1), and FIGS. 6 to 7 are linear The figure shows a cross section when the embedding jig (5) is integrated with the embedding part (2) of the gravure plate (1), and in the gravure plate (1) of the present invention, the circumferential part of the gravure plate ( 6) The relationship between the position of the cutting edge (7) of the perforation blade (3) and the groove (8) around the perforation blade (3) (shown by a dashed dotted line) is shown.

  The bottom portion (9) of the embedded portion (2) of the gravure plate (1) is a plate-like or plate-like embedding jig (4) or a linear embedding jig (5) if they are integrated The curved surface may be a curved surface along the surface of the gravure plate (1) indicated by the white line, or a flat surface indicated by the white broken line.

  FIG. 3 shows that the cutting edge (7) of the perforated blade (3) of the plate-like embedding jig (4) is provided in the circumferential portion (6) of the gravure plate (1), and provided on the nip pressure cylinder In the self-adhesive layer, the gap of the groove (8) is widened so that the printing substrate film is strongly pressed by the perforation blade (3).

  FIG. 4 shows that the cutting edge (7) of the perforated blade (3) of the plate-like embedding jig (4) is provided outside the circumferential portion (6) of the gravure plate (1), and the nip pressure cylinder However, since the printing substrate film is pressed by the perforation blade (3) by the self-adhesive layer, the gap between the grooves (8) is narrowed.

  In FIG. 5, the perforated blade (3) of the plate-like embedding jig (4) is provided outside the circumferential portion (6) of the gravure plate (1), and provided on the self-adhesive layer nip pressure cylinder There is no need to provide a groove (8) around the perforator blade (3), since the self-adhesive layer presses the printing substrate film into the perforator blade (3).

  In FIGS. 4 and 5, the cutting edge (7) of the perforated blade (3) is located outside the circumferential portion (6) of the gravure plate (1), but the cutting edge of the perforated blade (3) The dimensions of 7) coming out of the circumferential portion (6) of the gravure plate (1) and the dimensional relationship between the opening of the groove (8) will be described in detail later.

  FIG. 6 shows that the cutting edge (7) of the perforated blade (3) of the linear embedding jig (5) is provided outside the circumferential portion (6) of the gravure plate (1), and the nip pressure cylinder A perforation is formed by pressing the printing substrate film into the perforation blade with the self-adhesive layer provided on.

  FIG. 7 shows that the cutting edge (7) of the perforated blade (3) of the linear embedding jig (5) is provided in the circumferential portion (6) of the gravure plate (1), and the groove (8) The self-adhesive layer provided on the wide self-adhesive layer nip impression cylinder is pushed into the grooves to form perforations in the printing substrate film.

  Although not shown, even in the case of using the linear embedding jig (4), similarly to the plate-like embedding jig (4), outside the circumferential portion (6) of the gravure plate (1), It may be a gravure plate provided with a perforation blade (3) cutting edge (7) of the linear embedding jig (4) and having a narrow opening of the groove (8) as shown in FIG.

  8 to 15 illustrate the cross section of the embedded portion (2) XX of the gravure plate (1) of FIG. 1 and the cross section of the plate-like embedding jig (4) X'-X ', The gravure plate (1) of the present invention will be described. 8 to 11 show a method of fixing the plate-like embedding jig (4) from the core of the gravure plate (1) to the gravure plate (1) with a bolt (10). In FIGS. 11 to 15, a plate-like embedding jig (4) consisting of a thin plate having perforation blades (3) is fixed to the gravure plate (1) using an adhesive and an adhesive tape. It is a method.

  Fig. 8 shows that the plate-like embedding jig (4) has a perforated blade (3) with a cutting edge (7) on the circumferential portion (6), and the core portion of the gravure plate (1) It is a figure fixed to a version (1). In order to make the cutting edge (7) of the perforated blade (3) on the circumferential part (6) of the gravure plate (1), the spacer (11) shown by thick black lines is bonded with an adhesive to form a groove (8) doing.

In FIG. 9, the plate-like embedding jig (4) has the perforated blade (3) with the cutting edge (7) outside the circumferential part (6) and can be bolted (10) from the core of the gravure plate (1) It is a figure fixed to a gravure plate (1). In order to adjust the height of the perforation blade (3) as in FIG. 8, a spacer (11) shown by a thick black line is formed with a bonding agent (8) with an adhesive.

In FIG. 10, the plate-like embedding jig (4) is provided with a perforated blade (3) and a cutting edge (7) outside the circumferential part, and a gravure plate with a bolt (10) from the core of the gravure plate (1). It is a figure fixed to (1)

  FIG. 11 shows a thin plate-like plate (13) having perforation blades (3) formed in a plate-like embedding jig base (12) having a flat surface, bonded using an adhesive and an adhesive tape. An eye blade (3) is formed, the cutting edge (7) is provided outside the circumferential portion (6) of the gravure plate (1), and the gravure plate (1) is bolted from the core of the gravure plate (1). It is a figure fixed to.

FIG. 12 shows a thin plate in which the embedded portion (2) is formed on the surface of the gravure plate (1) by cutting or corroding the thin plate (13) thickness and the perforated blade (3) is formed 13) using a plate-like embedding jig (4), an adhesive and an adhesive tape, and the gravure plate (1) having the bonded cutting edge (7) outside the circumferential portion (6) of the gravure plate (1) ).
The two-dot broken line (14) in the diagrams of FIGS. 9 to 12 is shown to indicate a straight line.

  Fig. 13 shows a groove (8) around the perforation blade (3) with the spacer (11) at the height of the perforation blade in the thin plate (13) on which the perforation blade (3) is formed Thus, the adhesive is used to bond together to form a plate-like embedding jig (4), and the surface of the gravure plate (1) is a total of the thickness of the thin plate (13) and the height of the perforation blade (3). This is a gravure plate (1) in which a plate-like embedding jig (4) is bonded to a portion cut at a depth using an adhesive and an adhesive tape.

  In FIG. 14, the height of the perforation blade (3) is increased compared to FIG. 13, and the spacer (11) thinner than the height of the perforation blade (3) is an adhesive around the perforation blade (3) To form a groove (8), and the cutting edge (7) is a gravure plate (1) formed outside the circumferential portion (6) of the gravure plate (1).

  FIG. 15 shows a thin plate as a plate-like embedding jig (4), without providing a recess to be embedded in the surface of the gravure plate (1), and using a thin plate (13) having perforation blades (3) formed thereon. A recess is embedded in the thin plate (13) on which the perforated blade (3) is formed by bonding the spacer (11) of the thickness of the plate (13) to the gravure plate (1) with an adhesive. It is a gravure plate (1) in which a thin plate-like plate (13) having a blade (3) formed thereon is bonded with an adhesive.

  FIG. 16 shows a thin linear plate (15) having perforation blades (3) as a linear embedding jig (5), and the surface of the gravure plate (1) is a thin linear plate (15) The linear embedding jig (5) in which the perforator blade (3) is formed is pasted to the cut part of the thickness of using the adhesive and the adhesive tape, and the perforator blade is the circumference of the gravure plate It is a gravure plate (1) provided outside.

FIG. 17 shows a thin linear plate (15) on which perforation blades (3) are formed as a linear embedding jig (5), with the cutting edge of perforation blades on the circumference of the gravure plate (1) Attach a linear embedding jig (5) to the part cut at a depth equal to the sum of the thickness of the thin plate (15) and the height of the perforated blade so as to form an adhesive or It is a gravure plate (1) bonded using a tape.
FIG. 18 shows a gravure plate (1) using a thin linear plate (15) having a perforated blade (3) at one end of the thin linear plate (15) as a linear embedding jig (5) Gravure in which the surface of the gravure plate (1) is cut so that a part of the perforation blade comes out on the circumference of the surface, and the linear embedding jig (5) is bonded using an adhesive or an adhesive tape It is version (1).

  Thus, the gravure plate of the present invention can use the embedding jig (4) of various configurations, and which configuration is selected takes into consideration the production period, production cost, required product quality, etc. And you may choose.

  Next, description will be added on the height of the perforation blade, the gap of the groove, the depth, etc. shown in FIG. 3 to FIG. FIG. 19 is an enlarged view of the perforated blade portion of the gravure printing plate shown in FIGS. 3 and 7, FIG. 20 in FIG. 4 and FIG. 21 in FIGS. 5 and 6.

  FIG. 19 is a cross-sectional surface dimension diagram around the perforation blade (3) of the plate-like embedding jig (4) or the linear embedding jig (5) embedded in the gravure plate (1), wherein the perforations are The width (A, A ') of the groove (8) provided on both sides of the blade is within 2,0 mm to 5,0 mm, the depth (B) and the height (C) of the perforated blade are within 2,0 mm is there. The cutting edge length of the perforation blade provided continuously is 0, 25 mm to 2, 0 mm, the interval of the groove provided between the cutting edges is 0, 2 mm to 1, 0 mm, the width (D) of the perforation blade Constructed within 0, 6 mm. However, regarding the width (D) of the perforation blade, it is not the width at the groove bottom but the width at the extension of the cutting edge angle.

  FIG. 20 is another cross-sectional surface dimension view around the perforated blade (3) of the plate-like embedding jig (4) or the linear embedding jig (5) embedded in the gravure plate (1), The width (A, A ′) of the grooves (8) provided on both sides of the perforation blade (3) is within 3,0 mm, and the depth (B) is within 2,0 mm. The height (C) of the perforation blade provided continuously is within 2, 5 mm, and the height of the portion of the perforation blade coming out of the circumference of the gravure plate is within 0, 5 mm. The length of the cutting edge is 0, 25 mm to 2 mm, the spacing of the grooves provided between the cutting edges is 0, 2 mm to 1, 0 mm, and the width (D) of the perforated blade is within 0, 8 mm. However, regarding the width (D) of the perforation blade, it is not the width at the groove bottom but the width at the extension of the cutting edge angle.

  FIG. 21 is another cross-sectional surface dimension diagram around the perforation blade (3) of the plate-like embedding jig (4) or the linear embedding jig (5) embedded in the gravure plate (1), A perforated blade is provided at a height (C) within 0, 5 mm from the gravure plate (1). The cutting edge length of the perforation blade provided continuously is 0, 25 mm to 2, 0 mm, the interval of the groove (24) provided between the cutting edges is 0, 2 mm to 1, 0 mm, the width of the perforation blade ( C) is comprised within 0, 6 mm. However, regarding the width (D) of the perforated blade, it is not the actual width on the circumferential part (6) of the gravure plate (1) but the width on the circumferential part (6) when the cutting edge angle is extended is there.

The plate-like embedding jig and the linear embedding jig may be prepared by a corrosion method, and the cutting edge may be finished by a cutting method. In addition, it is preferable that no step occurs when attaching the embedding jig to the embedding portion provided in the gravure plate, but a gap of about 0, 05 mm or a gap is generated between the embedding portion and the embedding jig Then, it may be filled with a resin such as an adhesive.

  In order to form perforations in the printing substrate film with the gravure plate of the present invention, it is necessary that the nip impression cylinder pressed against the gravure plate is a special roller. The gravure plate and the nip impression cylinder are pressurized at a pressure of 400 kg to 800 kg and perforations are imparted by passing the printing substrate film between them, but in order to protect the gravure plate, a perforation blade is applied to the nip impression cylinder Even if it hits, it is necessary to ensure that there is no wear or chipping on the cutting edge. Also, in order to protect the nip impression cylinder, it is necessary to ensure that the surface is not worn out or crushed even if the perforation blade is hit several times and the incision is made.

  Accordingly, in the case of using the gravure printing plate of the present invention, the surface of the woven fabric is coated with a synthetic resin, which the inventor of the present invention invented in Japanese Patent Application No. 2017-46167. A nip characterized in that a self-adhesive layer formed of a coated coated fabric and a pressure-sensitive adhesive layer provided on the back side of the coated fabric is wound around the outer periphery of the core of a nip pressure cylinder. An impression cylinder may be used.

  By using such a nip impression cylinder having a self-adhesive layer on the surface, the gravure plate does not wear or chip at the cutting edge of the perforated blade even in pressure contact with a gravure printing press, and the nip impression cylinder The self-adhesive layer does not cause abrasion or crushing and scattering on the surface of the.

  The gravure plate of the present invention, a coated cloth coated with a synthetic resin on the surface side of the woven fabric and further coated with a non-silicon release agent, and an adhesive layer provided on the back side of the coated cloth The nip impression cylinder, in which two or more layers of the self-adhesive layer are wound around the core of the nip impression cylinder, is set in the printing unit at the latter stage of gravure printing, and printing patterns and perforations are formed on the printing substrate film. Done inline.

In the packaging bag of the present invention, an arbitrary pattern is printed on the film to be printed by a front stage printing unit of a gravure printing press in which a plurality of printing units to be gravure printed are provided along the transport path of the film to be printed The gravure plate according to claim 1 or 2, provided with an arbitrary perforated blade in registration with the arbitrary pattern, and the self-adhesive layer is wound around the periphery of the core material in the printing unit in the latter stage A perforated line is formed in the non-sealed portion of the print film by pressure contact with the nip impression cylinder, and it is formed of a laminated film for packaging in which at least a sealant film is laminated on the print film. It features.

The steps from the step of using the gravure plate of the present invention and applying perforations in-line with the pattern printing with the gravure printing machine to the packaging bag of the present invention will be described in detail from [1] to [3] below. .

[1] Any of the printing units provided with a plurality of printing units on which the gravure printing is performed along the film conveyance path, printing any pattern on the film, and providing the printing unit in the subsequent stage Between pressure contact with a gravure plate provided with a substantially circular or substantially square perforated blade in which the design is aligned with the design and a nip pressure cylinder wound around the core of the nip pressure cylinder via the self-adhesive layer. Through the printed film of the arbitrary pattern, align the register of the arbitrary pattern, and form a substantially circular or substantially rectangular area in the area of the non-sealed portion when the film is laminated with the sealant to form a laminated film for packaging A perforation is formed by the perforation blade.

  Next, [2] a film including at least a sealant film and a film having at least a sealant film formed by printing an arbitrary pattern, a substantially circular or substantially square perforation, and processing it into a laminated film for packaging by dry lamination or polyethylene extrusion lamination. Furthermore, it is good also as bag making goods of various forms by the bag making process.

  The packaging material such as the laminated film for packaging manufactured as described above or a bag-making product using the laminated film for packaging etc. is then filled with the content [3] in the packaging material to form a packaging bag.

  About the specification of a packaging bag, and the usage method, since this inventor has described in detail by Japanese Patent Application No. 2017-61227, it abbreviate | omits. The gravure plate used in Japanese Patent Application No. 2017-61227 is different from the gravure plate of the present invention, but can be a similar packaging bag.

  Furthermore, if the perforation blade of the gravure plate of the present invention is used as a linear embedding jig using a thin linear plate, and perforations are provided in the width direction of the gravure plate to produce a laminated film for packaging, a new opening is obtained. Can be proposed as a packaging bag. FIG. 22 shows a pillow form packaging bag. The figure of the form which opened the packaging bag in FIG. 23 is shown.

  The gravure plate of the present invention can be easily manufactured, and the packaging bag providing a new opening method can be perforated inline with the printing of the pattern using a gravure printer. In addition, any perforations can be provided by a gravure plate by a gravure printing machine, and the range of application and application to various packaging materials can be broadened.

Figure of embedded part provided in gravure plate and plate-like embedded jig provided with perforation blade Figure of embedded part provided in gravure plate and linear embedding jig provided with perforation blade A conceptual diagram in which the cutting edge of the perforated blade of the plate-like embedding jig is provided on the circumferential part of the gravure plate to widen the gap of the groove A conceptual diagram in which the cutting edge of the perforated blade of the plate-like embedding jig is provided outside the circumferential portion of the gravure plate and the gap of the groove is narrowed A conceptual view without a groove by setting the cutting edge of the perforated blade of a plate-like embedding jig outside the circumferential part of the gravure plate A conceptual diagram in which the cutting edge of the perforated blade of the linear embedding jig is provided outside the circumferential portion of the gravure plate A conceptual drawing of a wide groove with a cutting edge of a perforation blade of a linear embedding jig provided on the circumferential part of a gravure plate Conceptual diagram of the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Another conceptual diagram that constitutes the gravure version Cross-sectional surface dimension drawing around the perforation blade of the embedding jig of the gravure plate Another cross-sectional surface dimension drawing around the perforation blade of the embedding jig of the gravure plate Another cross-sectional surface dimension drawing around the perforation blade of the embedding jig of the gravure plate Pillow form packaging bag illustration Image of opened packaging bag Material composition of Example 1 Another packing bag figure in pillow form

  Pattern printing (19) was performed on a polyester film 12μ (18), and after being conveyed to a reversing device, perforation (16) processing was performed. The gravure plate used for the perforation (16) processing used the perforation blade of the configuration of FIG. Then, a butadiene-based AC agent (20) is applied to the printed film, aluminum foil 7μ (21) is laminated by extrusion of polyethylene 15μ (22), and a butadiene-based AC agent (20) is applied to the aluminum surface, and polyethylene 20μ (23) Extrusion was performed to obtain a laminated film for packaging. FIG. 24 shows a material configuration diagram.

Snack food was packaged in the pillow packaging form of FIG. 22 with the created laminated film for packaging. By pinching and pulling both side portions of the perforated portion, it was possible to open along the line to break (perforated portion), and the contents could be taken out in the shape of FIG.

The film configuration was the same as in Example 1, and the gravure plate was a circular perforation blade with the configuration of FIG. 12. Snack food was packaged in the pillow packaging form of FIG. 25 with the created laminated film for packaging. By pinching and pulling both sides of the perforated portion, it was possible to open it in a circular shape along the line to be broken (perforated portion), and the contents could be taken out.

A, A 'Groove width B Groove depth C Perforator blade height D Perforator blade width 1 Gravure plate 2 Embedding part 3 Perforator blade 4 Plate-like embedding jig 5 Line-like embedding jig
6 circumferential portion 7 cutting edge 8 groove 9 bottom portion of embedded portion 10 bolt 11 spacer 12 flat plate-shaped embedded jig base 13 (formed with perforated blade) thin plate 14 Perforated blade) Thin-lined board 16 Perforations 17 Contents 18 Polyester film 12μ
19 pattern printing 20 butadiene AC agent 21 aluminum foil 7μ
22 Polyethylene 15
23 polyethylene 20μ
24 pillow packaging bag

Claims (3)

  An embedding portion for embedding a plate-like embedding jig having a substantially circular or substantially square perforation blade is formed on the surface of a cylindrical gravure plate, and the plate-like embedding jig is fixed to the embedding portion; A gravure plate mounted thereon, wherein a surface of the plate-like embedding jig other than the perforation blade is positioned on a circumferential surface of the gravure plate.   An embedding portion for embedding a linear embedding jig having a straight perforation blade is formed on the surface of a cylindrical gravure plate, and a linear embedding jig having the perforation blade is fixed to the embedding portion. A surface of the linear embedding jig mounted and having the perforation blade excluding the perforation blade is located on the circumferential surface of the gravure plate, or a linear embedding jig having the perforation blade A gravure plate characterized in that the peripheral portion excluding the perforation blade is formed as a groove positioned lower than the circumferential surface of the gravure plate. After printing an arbitrary pattern on the film to be printed by the former stage printing unit of the gravure printing press, in which a plurality of printing units to be subjected to gravure printing are provided along the transport path of the film to be printed The gravure plate according to claim 1 or 2, further comprising: an optional perforated blade in register with an optional pattern; and a nip impression cylinder in which a self-adhesive layer is wound around the core material. A packaging bag formed of a laminated film for packaging, in which perforations are formed in the non-sealed portion of the printed film by pressure contact, and at least a sealant film is laminated on the printed film.

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