JP4256648B2 - Packaging material cutting cutter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging material cutting cutter applied to a packaging machine such as a bag making machine, a bag making filling machine, or a horizontal pillow packaging machine.
[0002]
[Prior art]
Conventionally, in a bag making machine that manufactures a bag, or a bag making and filling machine that manufactures a package by filling a bag with a product while manufacturing the bag, and a packaging machine such as a horizontal pillow packing machine, the manufactured bag Alternatively, a cutter that cuts the border between adjacent bags or packages is used to separate the packages. There are various types of cutters for cutting the packaging material, and one type of cutter is a type of cutter that cuts through the packaging material.
[0003]
FIG. 7 is a schematic perspective view showing an example of a conventional vertical bag making and filling machine. In the vertical bag making and filling machine 50, a web-like packaging material 60 is formed into a cylindrical packaging material 61 by a former 51. The center seal is performed by the center seal means 52. The cylindrical packaging material 61 is filled with a product S which is a package dropped on the filling cylinder 53. The end seal / cut means 54 applies end seal to the cylindrical packaging material 61 to manufacture the bag package 63 formed in advance and packaged with the product S as a package, and at the same time of the product S. An end seal on the bottom side of the bag 62 to be charged is formed. On both the left and right sides of the outer periphery of the filling cylinder 53, a packaging material feed belt mechanism 55 for feeding the cylindrical packaging material 61 is disposed. The seal cut blocks 54a and 54b constituting the end seal cut means 54 operate so as to approach and separate from the cylindrical packaging material 61, and are sandwiched in a direction crossing the cylindrical packaging material 61 when approaching. And an end sealer for forming a bottom end seal for the bag 62 and an end sealer for forming an upper end seal for the bag packaging 63.
[0004]
The end seal / cut means 54 further includes a cutter blade 56 that cuts the tubular packaging material 61 in a form that breaks through the tubular packaging material 61 between both end sealers. The cutter blade is attached to one seal cut block 54a between the upper end sealer portion and the lower end sealer portion, and the other seal cut block 54b includes both seal cut blocks. A groove 57 into which the cutter blade 56 enters when 54a and 54b approach each other is formed. When both seal / cut blocks 54a and 54b approach, the upper and lower end sealers sandwich the packaging material to weld the cylindrical packaging material 61 to form the end seal portion, and at the same time, the cutter blade 56 is the cylindrical packaging material. Cut in a way that breaks through 61.
[0005]
By the way, according to recent diversification of eating habits, packaging bodies that use raw foods and food products as packages are manufactured and sold. Such a package is packaged in a sterile environment by putting it in a sterile environment from the viewpoint of hygiene, or packaged in an oxygen-free state by containing an oxygen scavenger, but such a sterile and oxygen-free state is sufficiently long. Need to be maintained over time. In order to ensure the isolation from the outside air, the strength of the packaging material forming the bag and the strength of the seal for sealing tend to be increased.
[0006]
On the other hand, such a package with a high degree of sealing becomes more difficult to open as the degree of sealing increases, and an easy-open structure that helps open the package is required. In particular, there is a demand for easy opening even when an aging society is reached and a large opening force cannot be obtained at the hand, such as elderly people and children. 2. Description of the Related Art Conventionally, a structure in which an I notch, a V notch, a corrugated edge, or the like is formed on an edge of a bag, which is an easy-open structure for a bag package, has been proposed. However, the I-notch is less likely to give a high-class feel to the package, and the V-notch and corrugated edge are said to look better than the I-notch. You may not be able to start. Moreover, even if the tearing can be started, the tearing direction is not always constant depending on the type of the packaging material, and there is a problem that the unsealing enough to take out the package cannot be realized. In addition, since the V notch is usually formed at only one place, if the first opening fails, it is difficult to open again.
[0007]
In view of this, a film cutting blade has been proposed in which an auxiliary blade that is gently inclined is provided on the back side of each peak of a saw blade composed of continuous peaks (see Patent Document 1). FIG. 8 is an enlarged perspective view showing an example of the film cutting blade according to this proposal. As shown in FIG. 8, the film cutting blade 70 has a blade portion formed at the tip of a main body 71 in which peaks are continuously formed. Both the outer sides near the apex 72 are removed to form a gently inclined blade 74 connecting the inclined blade 73 and the apex 72. Further, an auxiliary blade portion 75 is formed on the back portion of the mountain continuous with the vertex 72. As a result, a blade extending in three directions around the vertex 72 is formed. The film first hits the apex 72 and then cuts in the direction of both the blade portions 74 and 74 and the direction of the auxiliary blade portion 75. When the cutting of the film along the two blade portions 74 proceeds to the intersecting portion 78, the portions torn by the adjacent blade portions 73, 73 are continuous, and the film is cut in the lateral direction. In addition, the auxiliary blade portion 75 is formed by cutting the film. The film tearing by the auxiliary blade 75 reaches the tip 76 and thereafter becomes the back portion 76 where no blade is formed, and therefore does not proceed any further. In this way, the cutting blade 70 is cut in a triangular wave shape at the edge of the end seal portion, and the auxiliary blade portion 75 is formed with a cut extending inward in each V-shaped back portion constituting the triangular wave. Regardless of the film material, the tearing of the film is guided by the notch and extends from the notch to its extension by cutting the triangular wave edge of the end seal part and tearing it in the opposite directions when tearing the film. Then, the package is opened.
[0008]
Auxiliary blades formed with a gentle inclination show a sufficient sharpness at the beginning of use after loading into the machine. However, as the bag making machine and packaging machine continue to operate for a long time, the packaging material gradually There is a risk that the sharpness of cutting the cut will be reduced. In other words, the angle of the auxiliary blade portion formed by scraping the back portion of the continuous mountain forming the triangular wave-shaped edge becomes duller than the angle of the mountain. In such a structure of the auxiliary blade portion, in order to form a cut in the film, it is necessary to overcome and bend the film. However, depending on the nature of the packaging film such as a packaging film (for example, nylon) showing elasticity, the auxiliary blade When the part comes into contact, the film tends to escape and the effect of cutting cannot be obtained sufficiently. If notches are not sufficiently formed in the notches formed in the package, there is a risk that bags and packages that are difficult to open may be manufactured.
[0009]
[Patent Document 1]
JP-A-11-320478 (page 3 to page 4, FIG. 4)
[0010]
[Problems to be solved by the invention]
Therefore, in the packaging material cutter that cuts the packaging material in order to define the edge of the bag or bag packaging body, the V-shaped notch or the incision extending inward of the packaging material from the back of the corrugated edge is more positive. In addition, there is a problem to be solved in terms of reliable formation.
[0011]
An object of the present invention is to form a bag or bag package manufactured independently or continuously when forming a V-shaped notch formed for easy opening at an edge portion adjacent to a seal portion of a bag or bag package. When cutting the edge part of a product with a corrugated cutting edge, it is possible to reliably form a notch for easy opening at the back of the V-shaped notch or corrugated cutting edge regardless of the nature of the packaging material. It is to provide a packaging material cutting cutter.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, a packaging material cutting cutter according to the present invention has a cutting edge portion of a plate-shaped cutter main body having one or a plurality of corrugated blades having a ridge line blade portion that intersects at a tip portion and opens obliquely in both lateral directions. And at least one of the tip portions is formed with an incision forming auxiliary blade portion protruding from the tip portion in a direction opposite to the side on which the ridge line blade portions are opened.
[0013]
According to this packaging material cut-off cutter, the edge portion of the plate-shaped cutter body intersects with the edge portion of the blade so that the adjacent ridge line blade portion extends obliquely on both sides in the thickness direction of the blade edge portion. since the formed one or more waveforms blades comprising is formed and when cut to as possible mintues packaging material using the cutter, cut out in a wave shape to the packaging material by a sharp ridge cutting section One or more cutting edges are formed. Further, at least one tip, since the side of both ridge cutting section to open the auxiliary blade portion for cut formed in a form protruding in opposite directions are formed, the formation of the cutting edges, the waveform cutting At least one cut from the portion corresponding to the valley of the cut edge to be formed toward the packaging material is positively formed by the auxiliary blade portion . Since the auxiliary blade portion is provided to protrude, reliably cut only is formed without depending on the nature of the packaging material, such as showing elasticity. When connecting a plurality of corrugated blades, they may be provided apart from each other in the plate-like cutter body without being continuous with each other. If an auxiliary blade for forming cuts is formed at multiple tips, there are only as many places where you can try to open, and even if the opening ends unsuccessfully, It is possible to try opening at the shape cutting edge, and at that time, guidance for opening start by cutting is obtained.
[0014]
In this packaging material cutting cutter, the auxiliary blade portion is formed so as to be higher in the protruding direction of the cutter in the middle or toward the protruding tip side than the protruding source side. By configuring the auxiliary blade portion in this way , the auxiliary blade portion is in a state in which the high portion of the blade on the protruding side starts to cut through the packaging material first, and is connected to the corrugated cutting edge at the blade end on the protruding source side. , it forms a switching inclusive. In this way, since the incision for opening start guidance is formed first after the cut- off , there is no slip with respect to the packaging material of the auxiliary blade portion compared to the case of the push-cut from the corrugated cutting edge , and the formation of the incision Will be sure. The height of the edge of the auxiliary blade part may be the highest on the way to the protruding edge side, but from the viewpoint of the efficiency of the cutting and parting of the auxiliary blade part, the cutting edge should be It is preferable to form it so that it gradually increases toward the protruding tip position and becomes the highest at the highest protruding tip position.
[0015]
In this packaging material cutting cutter, adjacent ridge line blade portions of adjacent corrugated blades intersect each other to form a continuous corrugated blade over substantially the entire length of the blade edge portion of the plate-like cutter body, The mutually intersecting portions of the adjacent ridgeline blade portions can form the tip portion. By forming a continuous corrugated blade on the plate-shaped cutter body, a continuous corrugated cutting edge is formed at the edge of the bag or bag package formed by cutting the packaging material, and the bag or bag It looks good as a package. Any wave-shaped cut edge is provided with a notch that serves as a guide to start opening, so twisting the wave-shaped cut edge where the cut is found guides the start of opening and facilitates opening. .
[0016]
In the packaging material cutting cutter, the auxiliary blade portion can be formed on all the tip portions on one side or both sides of the cutter body. According to this packaging material cutting-off cutter, when auxiliary blades are formed at all the tip portions on one side of the cutter body, a notch for guiding opening start is formed at one cutting edge of the cut packaging material. Therefore, on the side where the cut is formed, the opening start is guided by the cut regardless of where the wave-shaped cut edge is opened without selecting the opening location. In addition, when the auxiliary blade part is formed on all the tip parts on both sides of the cutter body, since the cut for starting opening is formed on the cutting edges on both sides, from any wave-shaped cutting edge on either side, The opening start is guided by cutting without selecting any opening location.
[0017]
This packaging material cutting cutter is cut at the boundary portion between the continuously formed bags or between the continuously formed bag packaging bodies, and is cut at the tip portion and the ridge line blade portion. The cutting edge can be applied to a cutter for forming a wave-shaped cutting edge for easy opening. In the cutting for individually separating the bag or the bag package, by applying this packaging material cutting cutter, it is possible to form a notch for guiding opening start simultaneously with the cutting for separating the bag or the bag package.
[0018]
This packaging material cut-off cutter has a V-shape for easy opening, with a cutting edge cut at the tip portion and the ridgeline blade portion at the edge portion adjacent to the seal portion of the bag or bag package body. It can be applied to a cutter that forms a notch. When applied to the formation of a V-shaped notch for easy opening adjacent to the seal part of the bag or bag package, the bag or bag package is formed at the back of the V-shaped notch cut at the tip and the ridge line blade part. Since the notch for starting opening is formed, the notch guides the start of opening when opening from the V-shaped notch, so that the opening direction is stable and the bag package can be opened reliably.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a packaging material cutting cutter according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view showing an embodiment of a packaging material cutting-off cutter according to the present invention, FIG. 2 is an enlarged side view showing the blade edge portion of the packaging material cutting-off cutter shown in FIG. 1, and FIG. FIG. 4 is an enlarged perspective view showing a part of the blade edge part. FIG. 5 is a view showing a part of the bag package cut by the packaging material cutting cutter according to the present invention.
[0020]
A packaging material cutting cutter 1 shown in FIG. 1 (hereinafter abbreviated as “cutter 1”) is composed of a plate-like cutter body 2 having a blade edge portion 3, and a base end portion 4 opposite to the blade edge portion 3 is It is attached to an actuator of a seal / cutter device (not shown). In the illustrated example, in the blade edge portion 3, a large number of corrugated blades 5 are connected to each other and arranged continuously over substantially the entire width of the cutter body 2 to form a continuous corrugated blade. The continuous waveform blade has a continuous waveform in the plan view shown in FIG. 1 and the front view shown in FIG. A cutter 1 shown in FIG. 1 is a cutter for cutting a bag or a bag package continuously manufactured by a bag making machine or a packaging machine at an adjacent boundary portion.
[0021]
As shown in FIGS. 2 and 3, in the cutting edge portion 3 of the cutter 1, each corrugated blade 5 has ridge line blade portions 11, 11 and has a three-dimensional triangular mountain shape. Adjacent ridge line blade portions 11 and 11 intersect at one end of the cutter body 2 at a tip portion 10a sharpened in the thickness direction of the blade edge portion 3 and intersect at a tip portion 10b sharpened in the thickness direction of the blade edge portion 3 on the other side. is doing. The tip portions 10a and 10b occupy positions displaced in the plate thickness direction, that is, the D direction or the E direction, respectively, in the drawing with respect to the plate thickness center line 8 of the blade edge portion 3. Since each ridge line blade portion 11 has the blade edge portion 3 cut off obliquely, when the blade edge portion 11 opens and extends in the lateral direction (C direction shown in FIG. 3) from the tip portions 10a and 10b, the blade thickness direction of the cutter 1 ( 2 and FIG. 3 is inclined not only in the E direction or the D direction) but also in the cutting edge direction of the cutter 1 (the B direction and the A direction in FIG. 2), and has a structure suitable for cutting-off. Each ridge line blade portion 11 includes a blade edge 14 formed as an edge of the blade surface 12 on the surface 6 side and a blade edge surface 15 extending from the blade edge 14 to the blade surface 13 on the surface 7 side in an inclined manner.
[0022]
When cutting through the packaging material, cutting may be difficult if the cutting edge hits the packaging material at once. The wrapping material is inclined in a triangular mountain shape by the corrugated blades 5 and begins to be cut off at the highest tip portion 10a, and then each ridge line blade portion 11 is moved from the cutting edge 14 as the cutter 1 advances. The packaging material is gradually pushed down, and the cut part spreads on both sides from the cut-off part. When the press cut by each ridge line blade portion 11 reaches the tip end portion 10b (specifically, the intersection 16 of the blade edges 14, 14), the cut portions are connected to cut the packaging material. The cutting edge shape of the packaging material is a continuous triangle-shaped cutting edge corresponding to the continuous triangular corrugated blade 5, that is, a continuous wave-shaped cutting edge is formed, and the bag or bag packaging has a good appearance and a high-class feeling. A body is manufactured (see FIG. 5).
[0023]
In each of the tip portions 10a and 10b, an auxiliary blade portion 20a for incision formation is formed in a direction (D direction and E direction, respectively) opposite to the side where both ridge line blade portions 11 and 11 open in a triangular mountain shape from the tip portions 10a and 10b. , 20b protrude. That is, as shown in FIG. 3, when the blade edge portion 3 is viewed from the front, the auxiliary blade portions 20 a and 20 b are at the apex of the triangular mountain defined by the extension line of the blade edges 14 and 14 of both ridge line blade portions 11 and 11. It is formed so as to protrude into the region of the angle of vertical angle θ. The auxiliary blade portions 20a and 20b are formed in a shape similar to a sword tip. That is, as shown in FIG. 4, the cutting edges 21 of the auxiliary blade portions 20 a and 20 b are formed so as to be gradually higher toward the protruding tip side than the protruding base portion 22, and the highest protruding tip portion 23 is formed to be highest. By adopting such a cutting edge shape, the auxiliary cutting edge portions 20a and 20b start to cut through the packaging material from the highest protruding tip portion 23 having the highest blade, and cut into a state where the protruding source portion 22 is connected to the corrugated cutting edge. (See FIG. 5A) is formed.
[0024]
The incision that guides the opening of the opening is not a push cut from the corrugated cutting edge, but is formed first from the cut-out only for the incision and later connected to the corrugated cutting edge, so that the formation of the incision 36 is extremely reliable. become. The height of the cutting edges of the auxiliary blade portions 20a and 20b may be the highest on the way to the protruding tip side. However, as shown in this embodiment, from the viewpoint of the processing of the auxiliary blade portions and the efficiency of the cut-off. It is preferable to form the highest blade at the most protruding tip portion 23. Since the auxiliary blade portions 20a, 20b are provided at the tip portions 10a, 10b, as shown in FIG. 5 (a), a continuous wave shape outside the end seal portion 32 at both ends of the bag or bag package 30 A cutting edge 33 is formed to separate the bag or bag package individually. In addition, simultaneously with the formation of the corrugated cutting edges 33, notches 36 for opening start guidance extending inward are formed in all the back portions 35 of the corrugated cutting edges 34. When the auxiliary blade portions 20a and 20b are formed on all the tip portions 10a and 10b on both sides of the plate-like cutter body 2 as in the present embodiment, all of the wavy cutting edges are formed at both ends of the bag or bag package. Thus, the opening start is guided by the notch 36 from any corrugated cutting edge on either side without selecting any opening location. Further, since the auxiliary blade portions 20a and 20b are provided so as to protrude, the cut 36 is surely formed regardless of the nature of the packaging material, and the sharpness is not dulled.
[0025]
Various combinations are possible for the number and orientation of the triangular corrugated blades 5 formed on the blade edge portion 3 of the plate-like cutter body 2 and the selection of the corrugated blades 5 provided with the auxiliary blade portions 20a and 20b. That is, even when a plurality of corrugated blades 5 are provided, they may be provided discretely instead of being continuous. In that case, the front-end | tip part 10a (10b) may be located only in one side. Even if the corrugated blade 5 is provided continuously, it is not necessary to be continuous over the entire width of the cutter 1 and may be partially continuous. Also in this case, it is not necessary to provide the auxiliary blade portions 20a and 20b for all the corrugated blades 5, and the auxiliary blade portions 20a and 20b can be provided only for some of the corrugated blades 5. In the bag packaging body 37 shown in FIG. 5 (b), the corrugated cutting edges 38, 38 are partially formed continuously, but the notches 36, 36 are part of each corrugated cutting edge 38. Only formed. On the one side of the cutter body 2, when the auxiliary blade 20a (20b) for incision formation is formed at the plurality of tip portions 10a (10b), the bag or the bag package 30 has a place where the opening can be tried. Even if that number of locations exist, and even if the opening is unsuccessful, it is possible to try opening again at another corrugated cutting edge 33, 38, and at that time, the opening start guidance by the notch 36 is also possible. Is obtained. On one side of the cutter body 2, auxiliary blade portions 20a and 20b can be formed on all the tip portions 10a (10b). In this case, notches 36 for guiding the start of opening are formed on all of the cut edges on one side of the cut packaging material, so on that side, the opening from any corrugated cut edge can be performed without selecting the opening location. Even so, the opening start is guided by the cut 36.
[0026]
The illustrated embodiment is an example in which the present invention is applied to a cutter that cuts a boundary portion between a package body and a bag end seal that are manufactured continuously. However, in addition to this embodiment, various modifications can be made. Is possible. The packaging material cutting cutter may be a dedicated cutter for forming a V-notch. That is, a V notch may be formed adjacent to an end seal, a side seal portion, or a center seal portion formed on a package or bag, and the packaging material cutting cutter is a cutter that forms this V notch. It can also be applied to. FIG. 6 is a perspective view showing an example in which the packaging material cutting cutter according to the present invention is applied to the formation of a V-shaped notch. In the edge part 49 adjacent to the seal part 31 (32) of the bag or bag package body, in a state where the vicinity of both sides of the V-shaped notch forming part of the packaging material is pressed and held between the pressing parts 47a, 47b and 48a, 48b, As indicated by the arrows, the V-shaped notch forming cutter 42 cuts the packaging material at a right angle at the portion between the presses, thereby forming the V-shaped notch 41a for easy opening and the notch 36 for starting opening. The V-shaped notch forming cutter 42 is a single triangular blade comprising one tip portion 43 and a ridge line blade portion 44 extending obliquely on both sides thereof. An auxiliary blade portion 45 is formed to protrude from the distal end portion 43, and the auxiliary blade portion 45 forms a cut 36 by cutting through the packaging material. FIG. 5 (c) shows a bag package 40 in which a V-shaped notch 41 is formed in the center seal portion 31. The V-shaped notch 41 can be formed by applying a V-shaped notch forming cutter 42 shown in FIG. When opening from the V-shaped notch 41, the notch 36 guides the start of opening, so that the opening direction is stable and the bag package 40 can be reliably opened.
[0027]
This cutter for cutting off the packaging material is disposed at the final stage of a vertical bag making filling machine or a horizontal pillow packaging machine that packs and packs a package in a cylindrical packaging material or a folded packaging material. It is also applicable as a cutter. It can be arranged not only in a packaging machine but also in the final stage of a bag making machine that manufactures only bags without filling a package. Further, the present invention can also be applied as a cutter of a cutter device that performs a cutter action alone. Furthermore, a seal-cutter mechanism is provided, such as a reciprocating type seal / cutter or a box motion type seal / cutter that performs end sealing in a transverse direction on a cylindrical packaging material and cuts the cylindrical packaging material between end seals. It can also be applied to the cutter part of the type incorporated in Furthermore, although the corrugated blade formed on the blade edge portion 3 has a triangular shape in the above-described embodiment, it may be a saw blade or a U-shaped blade.
[0028]
【The invention's effect】
Since the packaging material cutting cutter according to the present invention is configured as described above, a V-shaped notch formed for easy opening is formed at the edge adjacent to the seal portion of the bag or bag package. Or, when cutting the edge of a bag or bag package manufactured independently or continuously with a corrugated cutting edge, from the back of the V-shaped notch or corrugated edge as an easy-open structure, Since the cut is formed by the auxiliary blade protruding outward from the tip, the cut is more positively and reliably formed. Therefore, in the V-shaped notch and the corrugated cutting edge as the easy-open structure, the obtuse edge is easy to wear out, but the auxiliary blade part is formed to protrude, so the notch for guiding the start of opening is surely In addition, the auxiliary blade part can maintain a good sharpness over a long period of time regardless of the nature of the packaging material such as elasticity. Furthermore, when the packaging material is torn, the tearing force is guided by the V-shaped notch or the deep part of the corrugated edge and acts on the cut, making it easy to concentrate on the packaging material and extend to the extension of the cut. The packaging material can be torn easily.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a packaging material cutting cutter according to the present invention.
FIG. 2 is an enlarged side view showing a cutting edge portion of the packaging material cutting cutter shown in FIG.
FIG. 3 is a front view showing a part of the blade edge part shown in FIG. 2;
4 is an enlarged perspective view showing a part of a cutting edge portion of the packaging material cutting cutter shown in FIG. 1; FIG.
FIG. 5 is a partial view showing an example of a bag package body cut using the packaging material cutting cutter according to the present invention.
FIG. 6 is a perspective view showing an example in which the packaging material cutting cutter according to the present invention is applied to the formation of a V-shaped notch.
FIG. 7 is a schematic perspective view showing an example of a conventional vertical bag making and filling machine.
FIG. 8 is an enlarged perspective view showing an example of a conventional film cutting blade.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cutting material cutting cutter 2 Plate-shaped cutter main body 3 Cutting edge part 5 Corrugated blade 10a, 10b, 43 tip part 11, 44 Edge line blade part 20a, 20b, 45 Auxiliary blade part 22 Projection origin part 23 The most projection tip part 30, 37, 40 Bag packaging 33, 38 Corrugated cutting edge 36 Cutting 41, 41a V-shaped notch

Claims (6)

The blade edge portion of the plate-like cutter body is formed by one or a plurality of adjacent edge line blade portions that intersect with each other so as to extend obliquely open on both sides in the thickness direction of the blade edge portion on both sides in the lateral direction . has a waveform edge, at least one of said tip, said wherein the two ridge cutting section to open the side from the tip portion are auxiliary blade portion for cut formed which projects in the opposite direction is formed, and the auxiliary A cutter for cutting a packaging material , wherein the blade portion is formed so as to be higher in the protruding direction of the cutter at the most protruding tip position in the middle or toward the protruding tip side than the protruding source side . The adjacent ridge line blade portions of the adjacent corrugated blades intersect each other to form a continuous corrugated blade over substantially the entire length of the cutting edge portion of the plate-like cutter body, and the adjacent ridge line blade portions intersect each other. The packaging material cutting cutter according to claim 1 , wherein the cut-off portion forms the tip portion. 3. The packaging material cutting cutter according to claim 2 , wherein the auxiliary blade portion is formed at all the tip portions on one side or both sides of the cutter body. Waveform for easy opening at the boundary portion between continuously formed bags or between continuously formed bag packages, and cutting at the boundary portion and the cutting edge cut at the tip portion and the ridgeline blade portion The packaging material cutting cutter according to any one of claims 1 to 3 , wherein the cutter is applied to a cutter for forming a cutting edge. It is applied to a cutter that forms a V-shaped notch for easy opening, with the cutting edge cut at the tip and the ridge line blade at the edge adjacent to the seal part of the bag or bag package. The packaging material cutting-off cutter according to claim 1, comprising: The ridge cutting section, packaging veneer-cutting cutter according to claim 1 consisting of Rukoto extend inclined toward the other side from the one side in the thickness direction of the cutting edge.

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