Blade for perforation formation, dividedly packaging bag, and packaging device

Abstract

To improve handleability of a dividedly packaging bag.SOLUTION: A perforation formation blade includes a plate-like base part, and a plurality of blade parts 130 which project in a projection direction from the base part and are aligned in an alignment direction perpendicular to the projection direction. Each of the plurality of blade parts 130 has a first blade surface 131 and a flat second blade surface 132 on a surface side, a flat third blade surface on a back face side, and tips 130P constituting the apexes of the blade parts 130. The first blade surface 131 and the second blade surface 132 are inclined in the projection direction and extend toward the base part from the tips 130P so as to be inclined in the alignment direction, and the ridge lines crossing each other form first cutting edges 141. The third blade surface is inclined in the projection direction and extends toward the base part from the tips in parallel with the alignment direction.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a perforation blade, a sachet, and a packaging device. [Background technology]

[0002] Japanese Patent Publication No. 2012-131551 (Patent Document 1) describes a drug packet in which multiple packet regions in which drug is enclosed are formed in overlapping sheets, and dividing perforations are formed between adjacent packet regions by arranging multiple cutouts in a row, and the cutouts have a dividing cutout portion extending in the dividing direction and an opening cutout portion extending laterally in the dividing direction, continuous with the dividing cutout portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-131551 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a packaging device that uses a long sheet-like packaging material to form sachets in which objects to be packaged are individually packed, a perforation is formed between two adjacent sachets to separate the sachets into individual packages. After separating the sachets along the perforation, a user of the sachets opens the sachets and removes the objects to be packaged from them.

[0005] There is a demand for improved ease of handling when opening a sachet. The present disclosure proposes a technique for improving the ease of handling of a sachet. [Means for solving the problem]

[0006] A perforation forming blade according to an aspect of the present disclosure includes a plate-shaped base and a plurality of blade portions that protrude from the base in a protruding direction and are aligned in an arrangement direction perpendicular to the protruding direction. Each of the plurality of blade portions has a flat first blade surface and a flat second blade surface on the front side, a flat third blade surface on the back side, and a cutting edge that constitutes the apex of the blade portion. The first blade surface and the second blade surface extend from the cutting edge toward the base so as to be inclined with respect to the protruding direction and the arrangement direction, and the ridge lines that intersect with each other form the cutting edge. The third blade surface is inclined with respect to the protruding direction and extends from the cutting edge toward the base parallel to the arrangement direction.

[0007] A sachet according to one aspect of the present disclosure is a sachet in which each package of packaging object is packed, and a partition separating two adjacent sachet bags has a perforation with multiple holes lined up in one direction, and each of the multiple holes has a flat V-shaped separating perforation that bends in one direction, and an opening cut-out portion that extends perpendicular to the one direction, continuous with the bend of the separating perforation.

[0008] A packaging device according to an aspect of the present disclosure includes a packaging unit that uses a long sheet-like packaging material to form sachets in which objects to be packaged are packaged one at a time. The packaging unit includes a perforation forming blade that forms a perforation with a plurality of pores aligned in the short direction of the packaging material in a partition that separates two sachets adjacent to each other in the longitudinal direction of the packaging material. The perforation forming blade has a plate-shaped base and a plurality of blade portions that protrude from the base in a protruding direction and are aligned in an arrangement direction perpendicular to the protruding direction. Each of the plurality of blade portions has a flat first blade surface and a flat second blade surface on the front side, a flat third blade surface on the back side, and a cutting edge that constitutes the apex of the blade portion. The first blade surface and the second blade surface extend from the cutting edge toward the base so as to be inclined with respect to the protruding direction and to be inclined with respect to the arrangement direction, and ridges that intersect with each other form the cutting edge. The third blade surface is inclined with respect to the protruding direction and extends from the cutting edge toward the base parallel to the arrangement direction. Effect of the Invention

[0009] According to the present disclosure, the ease of handling of sachets can be improved. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic configuration diagram of a packaging device according to an embodiment; [Diagram 2] 2 is a schematic perspective view of a medicine supplying section and a container forming section in the packaging device shown in FIG. 1. [Diagram 3] 2 is a schematic diagram showing a schematic configuration of a perforation forming section in the packaging device shown in FIG. 1. [Figure 4] FIG. [Diagram 5] FIG. 4 is a diagram showing the perforation forming blade as viewed from the front side. [Figure 6] FIG. 4 is a diagram showing the perforation forming blade as viewed from the back side. [Figure 7] 2 is an enlarged perspective view of a blade portion of the perforation forming blade as viewed from the front side thereof. FIG. [Figure 8] 2 is an enlarged perspective view showing a blade portion of the perforation forming blade as viewed from the rear side. FIG. [Figure 9] FIG. 4 is an enlarged plan view of the blade portion. [Figure 10] 10 is a cross-sectional view of the perforation forming blade taken along line XX shown in FIG. 9. [Figure 11] FIG. 2 is a schematic diagram showing a sachet on which perforations are formed. [Figure 12] FIG. 2 is an enlarged schematic diagram showing a perforation. [Figure 13] FIG. 13 is a perspective view of another example of a perforation forming blade. [Figure 14] FIG. 13 is a diagram showing another example of a perforation forming blade as viewed from the front side. [Figure 15] FIG. 13 is a diagram showing another example of a perforation forming blade as viewed from the back side. [Figure 16] 13 is an enlarged perspective view showing a blade portion of another example of a perforation forming blade as viewed from the front side. FIG. [Figure 17] 13 is an enlarged perspective view showing a blade portion of another example of a perforation forming blade as viewed from the back side. FIG. [Figure 18] 13 is an enlarged plan view of a blade portion of another example of a perforation forming blade. FIG. [Figure 19] 19 is a cross-sectional view of the perforation forming blade taken along line XIX-XIX shown in FIG. 18. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiments will be described with reference to the drawings. In the following description, the same parts and components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated. In the drawings, configurations may be omitted or simplified for convenience of explanation. It is also intended from the beginning that any configurations may be extracted from the embodiments and arbitrarily combined.

[0012] <Packaging device 1> FIG. 1 is a schematic configuration diagram of a packaging device 1 according to an embodiment.

[0013] The packaging device 1 is used to package an object to be packaged. The object to be packaged is a medicine, specifically, a solid medicine. Examples of the solid medicine include powders, granules, tablets, pills, and capsules. The object to be packaged is not limited to a solid medicine. The object to be packaged may be a semi-solid medicine or a liquid medicine.

[0014] The packaging device 1 is a drug packaging device for packaging drugs based on a prescription. A prescription is issued by a doctor to a patient. The prescription contains patient information and drug information. The patient information includes the patient's name and age. The drug information includes the drug name, amount, usage, and dosage. The packaging device 1 is used to package drugs into single dose amounts based on such a prescription.

[0015] A packaging material roll 3 is attached to the packaging device 1. The packaging material roll 3 is a packaging material 2 wound in a roll shape. The packaging material 2 is in the form of a long sheet. The packaging material 2 is formed, for example, from a resin film material. The packaging material 2 may be formed, for example, by laminating polyethylene onto OPP (biaxially oriented polypropylene).

[0016] The packaging device 1 is equipped with a packaging material conveying section 8. The packaging material conveying section 8 applies a driving force to the packaging material 2 to convey the packaging material 2. The packaging material 2 is conveyed in the longitudinal direction of the packaging material 2. The packaging material 2 is sent out from the packaging material roll 3. The arrow in FIG. 1 indicates the conveying direction DR of the packaging material 2. Hereinafter, the conveying direction DR of the packaging material 2 will be simply referred to as the "conveying direction DR." The upstream side of the conveying direction DR (the side closer to the packaging material roll 3) will be simply referred to as the "upstream." The downstream side of the conveying direction DR (the side away from the packaging material roll 3) will be simply referred to as the "downstream."

[0017] The packaging device 1 includes a packaging section 9. The packaging section 9 includes a medicine supplying section 5, a container forming section 6, and a perforation forming section .

[0018] The medicine supplying unit 5 supplies medicine to the packaging material 2 transported by the packaging material transporting unit 8. The medicine is supplied at one dose based on the prescription. The container forming unit 6 forms a container using the packaging material 2 transported by the packaging material transporting unit 8. The medicine is stored in the container. After the medicine is supplied from the medicine supplying unit 5, the container forming unit 6 heat seals the packaging material 2. The container forming unit 6 individually packages the medicine supplied from the medicine supplying unit 5 for one dose, and forms a packaging bag that is a package with the medicine contained inside.

[0019] The perforation forming section 7 is provided in the storage section forming section 6. The perforation forming section 7 forms perforations extending in a direction perpendicular to the conveying direction DR in the packaging material 2 conveyed by the packaging material conveying section 8. The perforations are a plurality of small holes arranged continuously in the short direction of the packaging material 2. The perforations are formed at positions that separate adjacent packaging bags in the longitudinal direction of the packaging material 2. By cutting the packaging material 2 along the perforations, the adjacent packaging bags can be easily separated.

[0020] The packaging device 1 further includes a printing unit 4. The printing unit 4 affixes a predetermined marking to the packaging material 2 that is unwound from the packaging material roll 3 and conveyed by the packaging material conveying unit 8. The predetermined marking is information related to the medicine contained in the packaging bag. The printing unit 4 is disposed upstream of the packaging unit 9 in the conveying direction of the packaging material 2. The printing unit 4, the medicine supplying unit 5, and the containing section forming unit 6 are arranged in this order from upstream to downstream in the conveying direction DR. The printing unit 4 prints information related to the medicine on the packaging material 2 prior to the heat fusion of the packaging material 2 by the containing section forming unit 6. The information related to the medicine includes the name and age of the person taking the medicine, the time of taking the medicine (dosage), the name and amount (quantity, weight) of the medicine, and the like.

[0021] FIG. 2 is a schematic perspective view of the medicine supplying section 5 and the container forming section 6 in the packaging device 1 shown in FIG.

[0022] At the drug supply position where the drug supply unit 5 supplies the drug 100 to the packaging material 2, the packaging material 2 is folded in half along the center line in the short side direction of the packaging material 2. Both short side edge portions 2a of the packaging material 2 are located above the short side central portion 2b of the packaging material 2 and are spaced apart from each other. As a result, an opening 2c facing upward is formed in the packaging material 2.

[0023] The packaging material 2 may be folded in half in advance. In this case, the packaging material 2 folded in half is fed from a packaging material roll 3 on which the packaging material 2 folded in half in advance is wound in a roll shape.

[0024] Alternatively, the packaging material 2 may be folded in half along the conveying path. In this case, the packaging material 2 is wound into a roll without being folded in half. The packaging material 2 is fed out from the packaging material roll 3 thus manufactured. A mechanism for folding the packaging material 2 in half is provided upstream of the drug supply position. The packaging material 2 fed out from the packaging material roll 3 is folded in half upstream of the drug supply position.

[0025] The drug supply unit 5 has a supply unit main body (not shown) and a hopper 51. The supply unit main body supplies the drug 100. The hopper 51 guides the drug 100 supplied from the supply unit main body to the packaging material 2. The hopper 51 has, at its tip, a drug inlet 52 for injecting the drug 100 into the packaging material 2. The drug inlet 52 is disposed so as to enter the inside of the packaging material 2 folded in half. The drug 100 supplied from the supply unit main body is guided by the hopper 51 to pass through the opening 2c of the packaging material 2 and enter the inside of the packaging material 2 folded in half.

[0026] The storage section forming section 6 has a heating member 61, a receiving member 62, and a pressure motor 65. The heating member 61 has a built-in heater. The receiving member 62 is a member that receives the heating member 61. The heating member 61 and the receiving member 62 are disposed opposite each other with the packaging material 2 sandwiched therebetween. The pressure motor 65 drives the heating member 61 and the receiving member 62. The heating member 61 and the receiving member 62 driven by the pressure motor 65 pressurize the packaging material 2 from both sides and separate them from the packaging material 2.

[0027] The heating member 61 and the receiving member 62 are each substantially T-shaped. The heating member 61 and the receiving member 62 each have a longitudinal portion 63 and a transverse portion 64. The longitudinal portion 63 constitutes a horizontal bar portion of the T and extends in the longitudinal direction of the packaging material 2. The longitudinal portion 63 extends in the conveying direction DR. The transverse portion 64 constitutes a vertical bar portion of the T and extends in the transverse direction of the packaging material 2. The transverse portion 64 extends in a direction perpendicular to the conveying direction DR. The longitudinal portion 63 of the heating member 61 and the longitudinal portion 63 of the receiving member 62 are disposed opposite each other with the packaging material 2 therebetween. The transverse portion 64 of the heating member 61 and the transverse portion 64 of the receiving member 62 are disposed opposite each other with the packaging material 2 therebetween.

[0028] In the container forming section 6, the heating member 61 is heated by a heater. In this state, the heating member 61 and the receiving member 62 pressurize the packaging material 2 from both sides. As a result, a longitudinal fused portion 23 and a transverse fused portion 24 are formed in the packaging material 2. The longitudinal fused portion 23 is formed by heat-sealing a portion of the packaging material 2 sandwiched between the longitudinal portion 63 of the heating member 61 and the longitudinal portion 63 of the receiving member 62. The longitudinal fused portion 23 closes the opening 2c of the packaging material 2. The transverse fused portion 24 is formed by heat-sealing a portion of the packaging material 2 sandwiched between the transverse portion 64 of the heating member 61 and the transverse portion 64 of the receiving member 62. The transverse fused portion 24 divides the inside of the packaging material 2 into a downstream side and an upstream side.

[0029] As a result, the packaging material 2 is divided by the crease of the folded packaging material 2, the longitudinal fused portion 23, and the two transverse fused portions 24 aligned in the conveying direction DR, forming sachets 21. The transverse fused portions 24 form the boundary between adjacent sachets 21 in the longitudinal direction of the packaging material 2. A storage section 22 is formed inside the sachet 21, and the drug 100 is stored in the storage section 22. The storage section 22 stores the drug 100, which is the object to be packaged.

[0030] The packaging material 2 does not necessarily have to be folded in half. Two different packaging material rolls may be attached to the packaging device 1, two sheets of packaging material unwound from the two packaging material rolls may be overlapped, and after a medicine is placed between the two sheets of packaging material, the two sheets of packaging material may be heat-sealed to form the sachet 21.

[0031] Fig. 3 is a schematic diagram showing a schematic configuration of the perforation forming unit 7 in the packaging device 1 shown in Fig. 1. Fig. 3(A) shows the arrangement of the perforation forming unit 7 when the perforation 25 is not formed in the packaging material 2. Fig. 3(B) shows the arrangement of the perforation forming unit 7 when the perforation 25 is formed in the packaging material 2.

[0032] As shown in FIG. 3(A), the perforation forming section 7 has a perforation forming blade 71. The perforation forming blade 71 is provided in the short side portion 64 of the receiving member 62. The perforation forming blade 71 is located in the widthwise center of the short side portion 64 of the receiving member 62. The perforation forming blade 71 extends in the short side direction of the packaging material 2 as a whole. The heating member 61 has a slit groove 72 formed by recessing a part of the surface facing the packaging material 2. The slit groove 72 extends in the short side direction of the packaging material 2.

[0033] The perforation forming blade 71 is pressed against the packaging material 2 when the heating member 61 and the receiving member 62 pressurize the packaging material 2 from both sides. The tip of the perforation forming blade 71 protrudes from the receiving member 62 and penetrates the packaging material 2 in the thickness direction, thereby forming a perforation 25 in the packaging material 2. At this time, the tip of the perforation forming blade 71 moves to the inside of the slit groove 72, as shown in FIG. 3(B). The perforation forming blade 71 is driven by the pressure motor 65, like the heating member 61 and the receiving member 62, and moves relative to the receiving member 62. The perforation 25 is formed in the center in the width direction of the short-side fused portion 24. By cutting the packaging material 2 along the perforation 25, adjacent sachets 21 can be easily separated.

[0034] The perforation forming blade 71 does not have to be provided on the receiving member 62. For example, the perforation forming blade 71 arranged downstream of the storage portion forming unit 6 may form the perforation 25 in the width direction center of the already formed short-side fusion portion 24. In this case, the perforation forming unit 7 further has, in addition to the perforation forming blade 71, a drive unit for driving the perforation forming blade 71.

[0035] Returning to Fig. 2, the packaging material conveying section 8 has a pair of conveying rollers 81 and a conveying motor 82. The pair of conveying rollers 81 are disposed opposite each other with the packaging material 2 sandwiched therebetween. The conveying motor 82 drives and rotates the pair of conveying rollers 81. The conveying motor 82 drives and rotates the pair of conveying rollers 81, whereby the packaging material 2 is conveyed.

[0036] In such a packaging section 9 (FIG. 1), the packaging material conveying section 8 conveys the packaging material 2 intermittently. When the conveyance of the packaging material 2 is stopped, the heating member 61 and the receiving member 62 pressurize the packaging material 2 from both sides. At this time, the perforation forming blade 71 is pressed against the packaging material 2. As a result, in the packaging material 2, longitudinal fused portions 23 are formed so as to be continuous in the longitudinal direction of the packaging material 2, transverse fused portions 24 are formed at regular intervals in the longitudinal direction of the packaging material 2, and further perforations 25 are formed at regular intervals in the longitudinal direction of the packaging material 2. In this manner, a plurality of sachets 21 are formed in the longitudinal direction of the packaging material 2.

[0037] Sachet 21 is a portion between adjacent short-side fused portions 24 in the longitudinal direction of packaging material 2, and is a portion between adjacent perforations 25 in the longitudinal direction of packaging material 2. Short-side fused portions 24 form the boundary between adjacent sachet bags 21 in the longitudinal direction of packaging material 2. Short-side portion 64 of heating member 61 and short-side portion 64 of receiving member 62 form the boundary between sachet bags 21 aligned in the conveying direction DR.

[0038] Here, the length between the widthwise central portions of adjacent short-side fused portions 24 in the conveying direction DR is referred to as the width W of the sachet 21 in the conveying direction DR. The width W indicates the length between adjacent perforations 25 in the longitudinal direction of the packaging material 2.

[0039] <Perforation blade 71> FIG. 4 is a perspective view of the perforation forming blade 71. The perforation forming blade 71 includes a base 120 and a plurality of blade portions 130. Each of the plurality of blade portions 130 protrudes from the base 120. The plurality of blade portions 130 are arranged in a line. The Z direction shown in FIG. 4 is the direction in which the blade portions 130 protrude from the base 120, and is hereinafter referred to as the protruding direction. The X direction shown in FIG. 4 is the direction in which the plurality of blade portions 130 are arranged, and is hereinafter referred to as the arrangement direction. The arrangement direction is perpendicular to the protruding direction. The Y direction shown in FIG. 4 is the direction perpendicular to the protruding direction and the arrangement direction, and is hereinafter referred to as the orthogonal direction.

[0040] The base 120 has a flat plate shape extending in the protruding direction and in the arranging direction. When looking at the perforation forming blade 71 in the perpendicular direction, the base 120 has a generally rectangular shape as a whole. The base 120 has a first base surface 121 which is one surface, and a second base surface 122 which is the other surface opposite to the first base surface 121.

[0041] FIG. 5 is a view showing the perforation forming blade 71 as seen from the front side. The outer surface of the perforation forming blade 71 including the first base surface 121 of the base 120 shown in FIG. 5 is referred to as the front surface of the perforation forming blade 71. FIG. 6 is a view showing the perforation forming blade 71 as seen from the back side. The outer surface of the perforation forming blade 71 including the second base surface 122 of the base 120 shown in FIG. 6 is referred to as the back surface of the perforation forming blade 71. FIG. 5 shows the perforation forming blade 71 as seen in the direction of the arrow V shown in FIG. 4. FIG. 6 shows the perforation forming blade 71 as seen in the direction of the arrow VI shown in FIG. 5 and FIG. 6 show views of the perforation forming blade 71 as seen in the positive Y direction and the negative Y direction, respectively.

[0042] Each of the multiple blade portions 130 protrudes from the base portion 120 in a protruding direction. The multiple blade portions 130 are aligned in an alignment direction. A groove portion 150 is formed between two blade portions 130 adjacent to each other in the alignment direction. The two blade portions 130 adjacent to each other in the alignment direction are separated from each other by the groove portion 150.

[0043] Each of the multiple blade portions 130 has a flat first blade surface 131 and a flat second blade surface 132 on the front surface side shown in Fig. 5. Each of the multiple blade portions 130 has a flat third blade surface 133 on the back surface side opposite the front surface side shown in Fig. 6.

[0044] The perforation forming blade 71 further includes an auxiliary blade portion 160. The auxiliary blade portion 160 is provided at one end of the multiple blade portions 130 aligned in the alignment direction. The perforation forming blade 71 has a comb-like shape as a whole.

[0045] Fig. 7 is an enlarged perspective view of the blade portion 130 as viewed from the front side of the perforation forming blade 71. Fig. 8 is an enlarged perspective view of the blade portion 130 as viewed from the back side of the perforation forming blade 71. Fig. 9 is an enlarged view of the blade portion 130 as viewed from a plane. Fig. 9 shows the blade portion 130 as viewed in the negative Z direction. In Fig. 9, the direction perpendicular to the paper surface is the protruding direction, the up-down direction in the figure is the arrangement direction, and the left-right direction in the figure is the orthogonal direction.

[0046] The first side surface 151 and the second side surface 152 constitute the side surfaces of the groove portion 150. The first side surface 151 and the second side surface 152 extend parallel to each other and are arranged at an interval in the arrangement direction. The first side surface 151 and the second side surface 152 extend in the YZ plane in the Cartesian coordinate system shown in FIG. 4. The bottom surface 153 constitutes the bottom surface of the groove portion 150. The bottom surface 153 extends in the XY plane in the Cartesian coordinate system shown in FIG. 4. The first side surface 151 and the second side surface 152 are perpendicular to the bottom surface 153. The first side surface 151 constitutes one side wall surface of two adjacent blade portions 130. The second side surface 152 constitutes the other side wall surface of two adjacent blade portions 130.

[0047] Each of the multiple blade portions 130 of the perforation forming blade 71 has a cutting edge 130P that constitutes the apex of the blade portion 130. Each of the multiple blade portions 130 has a flat first blade surface 131, a flat second blade surface 132, and a flat fourth surface 134 on the front side shown in Fig. 7. Each of the multiple blade portions 130 has a flat third blade surface 133 on the back side shown in Fig. 8. Both the front side and the back side of the blade portion 130 are processed to form flat blade surfaces on both the front side and the back side of the blade portion 130.

[0048] The first blade surface 131 and the second blade surface 132 extend from the cutting edge 130P toward the first base surface 121 of the base 120 so as to be inclined with respect to the protruding direction, the arrangement direction, and the perpendicular direction. The first blade surface 131 and the second blade surface 132 intersect at the center of the blade portion 130 in the arrangement direction. The ridge where the first blade surface 131 and the second blade surface 132 intersect with each other constitutes the first cutting edge 141. The first blade surface 131 and the second blade surface 132 are symmetrical with respect to the first cutting edge 141.

[0049] The first cutting edge 141 extends on the YZ plane in the Cartesian coordinate system shown in Fig. 4. The first cutting edge 141 extends perpendicular to the arrangement direction. The first cutting edge 141 is inclined with respect to the protruding direction and extends inclined with respect to the perpendicular direction.

[0050] The third blade surface 133 is inclined with respect to the protruding direction and extends parallel to the arrangement direction from the cutting edge 130P toward the second base surface 122 of the base 120. The third blade surface 133 is inclined with respect to the first blade surface 131. The ridge line where the first blade surface 131 and the third blade surface 133 intersect with each other constitutes the second cutting edge 142. The third blade surface 133 is inclined with respect to the second blade surface 132. The ridge line where the second blade surface 132 and the third blade surface 133 intersect with each other constitutes the third cutting edge 143. The second cutting edge 142 and the third cutting edge 143 extend at an incline with respect to the protruding direction, at an incline with respect to the arrangement direction, and at an incline with respect to the perpendicular direction.

[0051] The fourth surface 134 is inclined with respect to the first blade surface 131. The ridge line where the first blade surface 131 and the fourth surface 134 intersect with each other constitutes a fourth ridge line 144. The fourth surface 134 is inclined with respect to the second blade surface 132. The ridge line where the second blade surface 132 and the fourth surface 134 intersect with each other constitutes a fifth ridge line 145.

[0052] The first blade surface 131 is inclined relative to the second side surface 152. The ridge line where the first blade surface 131 and the second side surface 152 intersect with each other constitutes a sixth ridge line 146. The second blade surface 132 is inclined relative to the first side surface 151. The ridge line where the second blade surface 132 and the first side surface 151 intersect with each other constitutes a seventh ridge line 147.

[0053] The third blade surface 133 is inclined relative to the second base surface 122 of the base 120. The ridge line where the third blade surface 133 and the second base surface 122 intersect with each other constitutes an eighth ridge line 148. The fourth surface 134 is inclined relative to the first base surface 121 of the base 120. The ridge line where the fourth surface 134 and the first base surface 121 intersect with each other constitutes a ninth ridge line 149.

[0054] The first cutting edge 141 and the second cutting edge 142 intersect at the cutting edge 130P and form an acute angle. The first cutting edge 141 and the second cutting edge 142 intersect at the center of the blade portion 130 in the arrangement direction. The first cutting edge 141 and the third cutting edge 143 intersect at the cutting edge 130P and form an acute angle. The first cutting edge 141 and the third cutting edge 143 intersect at the center of the blade portion 130 in the arrangement direction.

[0055] The second cutting edge 142 and the third cutting edge 143 intersect at the cutting edge 130P to form an acute angle. The second cutting edge 142 and the third cutting edge 143 intersect at the center of the blade portion 130 in the arrangement direction. The angle at which the second cutting edge 142 is inclined with respect to the protruding direction is equal to the angle at which the third cutting edge 143 is inclined with respect to the protruding direction. The angle at which the first cutting edge 141 is inclined with respect to the protruding direction is smaller than the angles at which the second cutting edge 142 and the third cutting edge 143 are inclined with respect to the protruding direction.

[0056] When looking at the blade portion 130 in the protruding direction, the first blade surface 131 and the second blade surface 132 have a congruent trapezoidal shape. The third blade surface 133 has a pentagonal shape with two right angles. The fourth surface 134 has an isosceles triangular shape.

[0057] FIG. 10 is a cross-sectional view of the perforation forming blade 71 along the line XX shown in FIG. 9. In FIG. 10, the vertical direction in the figure is the protruding direction, the direction perpendicular to the paper surface is the arrangement direction, and the left-right direction in the figure is the orthogonal direction. Note that FIG. 9 illustrates the blade portion 130 as viewed in the direction of the arrow IX shown in FIG. 10. The angle θ shown in FIG. 10 is the angle between the first blade edge 141 and the third blade surface 133. Both the first blade edge 141 and the third blade surface 133 are inclined with respect to the protruding direction. The angle at which the first blade edge 141 is inclined with respect to the protruding direction is θ / 2. The angle at which the third blade surface 133 is inclined with respect to the protruding direction is θ / 2. The angle at which the first blade edge 141 is inclined with respect to the protruding direction and the angle at which the third blade surface 133 is inclined with respect to the protruding direction are equal to each other. The angle θ is, for example, 18°.

[0058] Fig. 13 is a perspective view of another example of a perforation forming blade 71. The perforation forming blade 71 includes a base 120 and a plurality of blade portions 130. Each of the plurality of blade portions 130 protrudes from the base 120. The plurality of blade portions 130 are arranged in a row. The Z direction shown in Fig. 13 is the protruding direction in which the blade portions 130 protrude from the base 120. The X direction shown in Fig. 13 is the arrangement direction in which the plurality of blade portions 130 are arranged. The Y direction shown in Fig. 13 is the orthogonal direction perpendicular to the protruding direction and the arrangement direction.

[0059] The base 120 has a flat plate shape extending in the protruding direction and in the arranging direction. When looking at the perforation forming blade 71 in the perpendicular direction, the base 120 has a generally rectangular shape as a whole. The base 120 has a first base surface 121 which is one surface, and a second base surface 122 which is the other surface opposite to the first base surface 121.

[0060] FIG. 14 is a view showing another example of the perforation forming blade 71 seen from the front side. The outer surface of the perforation forming blade 71 including the first base surface 121 of the base 120 shown in FIG. 14 is the front surface of the perforation forming blade 71. FIG. 15 is a view showing another example of the perforation forming blade 71 seen from the back side. The outer surface of the perforation forming blade 71 including the second base surface 122 of the base 120 shown in FIG. 15 is the back surface of the perforation forming blade 71. FIG. 14 shows the perforation forming blade 71 seen in the direction of the arrow XIV shown in FIG. 13. FIG. 15 shows the perforation forming blade 71 seen in the direction of the arrow XV shown in FIG. 13. The perforation forming blade 71 of the other example seen in the positive Y direction and the negative Y direction are shown in FIG. 14 and FIG. 15, respectively.

[0061] Each of the multiple blade portions 130 protrudes from the base portion 120 in a protruding direction. The multiple blade portions 130 are aligned in an alignment direction. A groove portion 150 is formed between two blade portions 130 adjacent to each other in the alignment direction. The two blade portions 130 adjacent to each other in the alignment direction are separated from each other by the groove portion 150.

[0062] Each of the multiple blade portions 130 has a flat first blade surface 131 and a flat second blade surface 132 on the front surface side shown in Fig. 14. Each of the multiple blade portions 130 has a flat third blade surface 133 on the back surface side opposite the front surface side shown in Fig. 15.

[0063] The perforation forming blade 71 further includes an auxiliary blade portion 160. The auxiliary blade portion 160 is provided at one end of the multiple blade portions 130 aligned in the alignment direction. The perforation forming blade 71 has a comb-like shape as a whole.

[0064] Fig. 16 is an enlarged perspective view of the blade portion 130 of another example of the perforation forming blade 71 as viewed from the front side. Fig. 17 is an enlarged perspective view of the blade portion 130 of another example of the perforation forming blade 71 as viewed from the back side. Fig. 18 is an enlarged plan view of the blade portion 130 of another example of the perforation forming blade 71. Fig. 18 shows the blade portion 130 as viewed in the negative Z direction. In Fig. 18, the direction perpendicular to the paper surface is the protruding direction, the up-down direction in the figure is the arrangement direction, and the left-right direction in the figure is the orthogonal direction.

[0065] The first side surface 151 and the second side surface 152 constitute the side surfaces of the groove portion 150. The first side surface 151 and the second side surface 152 extend parallel to each other and are arranged at an interval in the arrangement direction. The first side surface 151 and the second side surface 152 extend in the YZ plane in the Cartesian coordinate system shown in FIG. 13. The bottom surface 153 constitutes the bottom surface of the groove portion 150. The bottom surface 153 extends in the XY plane in the Cartesian coordinate system shown in FIG. 13. The first side surface 151 and the second side surface 152 are perpendicular to the bottom surface 153. The first side surface 151 constitutes one side wall surface of two adjacent blade portions 130. The second side surface 152 constitutes the other side wall surface of two adjacent blade portions 130.

[0066] Each of the multiple blade portions 130 of the perforation forming blade 71 has a cutting edge 130P that constitutes the apex of the blade portion 130. Each of the multiple blade portions 130 has a flat first blade surface 131 and a flat second blade surface 132 on the front side shown in Fig. 16. Each of the multiple blade portions 130 has a flat third blade surface 133 on the back side shown in Fig. 17. Both the front side and the back side of the blade portion 130 are processed to form flat blade surfaces on both the front side and the back side of the blade portion 130.

[0067] The first blade surface 131 and the second blade surface 132 extend from the cutting edge 130P toward the first base surface 121 of the base 120 so as to be inclined with respect to the protruding direction, the arrangement direction, and the perpendicular direction. The first blade surface 131 and the second blade surface 132 intersect at the center of the blade portion 130 in the arrangement direction. The ridge where the first blade surface 131 and the second blade surface 132 intersect with each other constitutes the first cutting edge 141. The first blade surface 131 and the second blade surface 132 are symmetrical with respect to the first cutting edge 141.

[0068] The first cutting edge 141 extends on the YZ plane in the Cartesian coordinate system shown in Fig. 13. The first cutting edge 141 extends perpendicular to the arrangement direction. The first cutting edge 141 is inclined with respect to the protruding direction and extends inclined with respect to the perpendicular direction.

[0069] The third blade surface 133 is inclined with respect to the protruding direction and extends parallel to the arrangement direction from the cutting edge 130P toward the second base surface 122 of the base 120. The third blade surface 133 is inclined with respect to the first blade surface 131. The ridge line where the first blade surface 131 and the third blade surface 133 intersect with each other constitutes the second cutting edge 142. The third blade surface 133 is inclined with respect to the second blade surface 132. The ridge line where the second blade surface 132 and the third blade surface 133 intersect with each other constitutes the third cutting edge 143. The second cutting edge 142 and the third cutting edge 143 extend at an incline with respect to the protruding direction, at an incline with respect to the arrangement direction, and at an incline with respect to the perpendicular direction.

[0070] The first blade surface 131 is inclined relative to the first base surface 121 of the base 120. A ridge line where the first blade surface 131 and the first base surface 121 intersect with each other constitutes a fourth ridge line 144. The second blade surface 132 is inclined relative to the first base surface 121. A ridge line where the second blade surface 132 and the first base surface 121 intersect with each other constitutes a fifth ridge line 145.

[0071] The first blade surface 131 is inclined relative to the second side surface 152. The ridge line where the first blade surface 131 and the second side surface 152 intersect with each other constitutes a sixth ridge line 146. The second blade surface 132 is inclined relative to the first side surface 151. The ridge line where the second blade surface 132 and the first side surface 151 intersect with each other constitutes a seventh ridge line 147.

[0072] The third blade surface 133 is inclined with respect to the second base surface 122 of the base portion 120. The ridge line where the third blade surface 133 and the second base surface 122 intersect with each other constitutes an eighth ridge line 148.

[0073] The first cutting edge 141 and the second cutting edge 142 intersect at the cutting edge 130P and form an acute angle. The first cutting edge 141 and the second cutting edge 142 intersect at the center of the blade portion 130 in the arrangement direction. The first cutting edge 141 and the third cutting edge 143 intersect at the cutting edge 130P and form an acute angle. The first cutting edge 141 and the third cutting edge 143 intersect at the center of the blade portion 130 in the arrangement direction.

[0074] The second cutting edge 142 and the third cutting edge 143 intersect at the cutting edge 130P to form an acute angle. The second cutting edge 142 and the third cutting edge 143 intersect at the center of the blade portion 130 in the arrangement direction. The angle at which the second cutting edge 142 is inclined with respect to the protruding direction is equal to the angle at which the third cutting edge 143 is inclined with respect to the protruding direction. The angle at which the first cutting edge 141 is inclined with respect to the protruding direction is smaller than the angles at which the second cutting edge 142 and the third cutting edge 143 are inclined with respect to the protruding direction.

[0075] When looking at the blade portion 130 in the protruding direction, the first blade surface 131 and the second blade surface 132 have a congruent trapezoidal shape. The third blade surface 133 has a pentagonal shape with two right angles.

[0076] FIG. 19 is a cross-sectional view of the perforation forming blade 71 along the line XIX-XIX shown in FIG. 18. In FIG. 19, the vertical direction in the figure is the protruding direction, the direction perpendicular to the paper surface is the arrangement direction, and the left-right direction in the figure is the orthogonal direction. FIG. 18 illustrates the blade portion 130 as seen in the direction of the arrow XVIII shown in FIG. 19. The two-dot chain line shown in FIG. 19 is an imaginary straight line that passes through the cutting edge 130P and extends in the protruding direction. Both the first blade edge 141 and the third blade surface 133 are inclined with respect to the protruding direction. The angle θ1 shown in FIG. 19 is the angle at which the third blade surface 133 is inclined with respect to the protruding direction. The angle θ2 shown in FIG. 19 is the angle at which the first blade edge 141 is inclined with respect to the protruding direction. The angle θ2 is larger than the angle θ1. The angle at which the first blade edge 141 is inclined with respect to the protruding direction is larger than the angle at which the third blade surface 133 is inclined with respect to the protruding direction.

[0077] <21 sachets, 25 perforations> 11 is a schematic diagram showing a sachet 21 on which a perforation 25 is formed. The fold of the packaging material 2 folded in half, the longitudinal fusion part 23, and the transverse fusion part 24 divide the packaging material 2 to form the sachet 21. A storage part 22 is formed inside the sachet 21, and the medicine is stored in the storage part 22. The sachet 21 packs the medicine, which is the packaging object, in one package at a time.

[0078] FIG. 12 is a schematic diagram showing an enlarged view of the perforation 25. Referring also to FIG. 3, a dividing region 26 where the packaging material 2 is not heat-sealed is provided between two adjacent short-side fused portions 24. A perforation forming blade 71 is interposed between two receiving members 62. When the heating member 61 and the receiving member 62 heat and press the packaging material 2 to form the short-side fused portion 24, the perforation forming blade 71 is pressed against the packaging material 2 to form the perforation 25 in the dividing region 26. The two short-side fused portions 24 and the dividing region 26 sandwiched therebetween, as shown in FIG. 12, constitute a partitioning section 27 that separates two sachets 21 adjacent in the longitudinal direction of the packaging material 2. The perforation 25 is formed in the partitioning section 27.

[0079] The perforation 25 has a plurality of pores 250 aligned in the short-side direction of the packaging material 2. In Figs. 11 and 12, the up-down direction in the drawings corresponds to the short-side direction of the packaging material 2. The plurality of pores 250 are aligned at intervals in the short-side direction of the packaging material 2. Each of the plurality of pores 250 has a separation perforation 251 and an opening cutout portion 255.

[0080] The dividing perforation 251 has a pair of oblique cut portions 252, 253. The oblique cut portion 252 is inclined with respect to the short side direction of the packaging material 2. The oblique cut portion 253 is inclined with respect to the short side direction of the packaging material 2. The angle at which the oblique cut portion 252 is inclined with respect to the short side direction of the packaging material 2 and the angle at which the oblique cut portion 253 is inclined with respect to the short side direction of the packaging material 2 are equal to each other. The angle formed by the oblique cut portion 252 and the oblique cut portion 253 is an obtuse angle.

[0081] The diagonal cut portion 252 has one end and the other end. The diagonal cut portion 253 has one end and the other end. One end of the diagonal cut portion 252 and one end of the diagonal cut portion 253 are continuous. The dividing perforation 251 has an overall dogleg shape. The dividing perforation 251 has a flat V-shape that is bent with respect to the short side direction of the packaging material 2. The direction in which the diagonal cut portion 252 extends at an angle with respect to the short side direction of the packaging material 2 and the direction in which the diagonal cut portion 253 extends at an angle with respect to the short side direction of the packaging material 2 are different from each other. The pair of diagonal cut portions 252, 253 intersect to form the V-shaped dividing perforation 251.

[0082] The opening cutout 255 is formed in the dividing region 26 so as to extend in the longitudinal direction of the packaging material 2. In Figs. 11 and 12, the left-right direction in the drawings is the longitudinal direction of the packaging material 2. The opening cutout 255 extends in a direction perpendicular to the direction in which the multiple pores 250 are arranged. The opening cutout 255 is continuous with the bent portion of the dogleg-shaped dividing perforation 251. The opening cutout 255 extends from the bottom of the V-shape formed by the dividing perforation 251 in a direction away from the end of the V-shape. The opening cutout 255 is continuous with one end of the oblique cutouts 252 and 253, and extends in a direction away from the other end of the oblique cutouts 252 and 253.

[0083] 11, a separation initiation portion 25A at the lower end of the perforation 25 is formed by an auxiliary blade portion 160 (FIGS. 4 to 6, 13 to 15). The separation initiation portion 25A is formed so as to reach the lower end of the sachet 21.

[0084] When sachet 21 is divided along perforation 25, division start portion 25A is the division start point. A handler dividing sachet 21 holds one of two adjacent sachet bags 21 between the fingers of his right hand and the other between the fingers of his left hand, and moves the two sachet bags 21 held in both hands away from each other so as to tear perforation 25 from division start portion 25A, thereby dividing the two adjacent sachet bags 21 along division perforation 251. In Figures 11 and 12, division start portion 25A is formed at the lower end of sachet bag 21, so that the direction in which sachet bag 21 is divided is the upward direction in the figures.

[0085] An opening slit 255 is formed on the left edge of each divided sachet 21. A handler who wishes to open sachet 21 can open sachet 21 by holding the upper part of opening slit 255 between the fingers of one hand and the lower part of opening slit 255 between the fingers of the other hand, and tearing sachet 21 from opening slit 255. The handler can remove the medicine contained in storage section 22 from opened sachet 21.

[0086] Since opening notches 255 are formed at equal intervals in a plurality of places on the left edge of sachet 21, the position at which it can be opened is not limited to a specific place on sachet 21. Sachet 21 is configured to be openable from any place in the short side direction of packaging material 2.

[0087] Since the opening cutout 255 is formed only on the left edge of one of the left and right edges of the sachet 21, the handler opens the sachet 21 from left to right starting from the left edge of the sachet 21. As described above, the packaging device 1 is provided with the printing unit 4, and it is possible to apply a predetermined marking to the sachet 21 using the printing unit 4. For example, if a mark indicating the direction in which the sachet 21 is to be opened is applied to the sachet 21, the handler of the sachet 21 can easily open the sachet 21 starting from the opening cutout 255. By applying a mark indicating the direction in which the sachet 21 is to be divided to the sachet 21, the handler of the sachet 21 can easily divide the sachet 21 starting from the division start portion 25A.

[0088] <Action and Effects> Although there is some overlap with the above description, the characteristic configuration of this embodiment and its actions and effects can be enumerated as follows.

[0089] 11 and 12, in sachet bags 21 in which one package of packaging objects is packed, perforations 25 are formed in partition section 27 that separates two adjacent sachet bags 21. Perforations 25 are formed by lining up a plurality of fine holes 250 in the short side direction of long sheet-like packaging material 2. Each of the plurality of fine holes 250 has a flat V-shaped separation perforation 251 that is bent in the short side direction of packaging material 2, and an opening cutout section 255 that is continuous with the bent portion of separation perforation 251 and extends in the longitudinal direction of packaging material 2.

[0090] After sachet 21 is divided along dividing perforations 251, opening slits 255 are formed on the edge of each sachet 21. Using these opening slits 255 as the starting point for opening, a user of sachet 21 can easily open sachet 21. Since opening slits 255 are formed in multiple locations on the edge of sachet 21, sachet 21 can be opened at a desired position. This improves the ease of handling of sachet 21.

[0091] An opening slit 255 is connected to the bent portion of the separation perforation 251. The opening slit 255 extends in a direction perpendicular to the direction in which the sachet 21 is separated. When the sachet 21 is separated, the sachet 21 is separated along the separation perforation 251, making it difficult for the sachet 21 to tear toward the opening slit 255. Since it is possible to prevent the sachet 21 from being accidentally opened when being separated, the handleability of the sachet 21 can be improved.

[0092] 11 and 12, opening notch 255 extends from the bottom of the V-shape of dividing perforation 251 in a direction away from both ends of dividing perforation 251. After sachet 21 is divided along dividing perforation 251, the V-shape of dividing perforation 251 becomes the shape of the edge of sachet 21. A V-shape is formed at the edge of sachet 21, and opening notch 255 is formed extending from the bottom of the V-shape. A user of sachet 21 can easily open sachet 21 with the strength of his or her fingers, using opening notch 255 as the starting point for opening.

[0093] 11 and 12, the separation perforation 251 has a pair of oblique cut portions 252, 253 that extend at an angle with respect to the short-side direction of the packaging material 2. The ends of the pair of oblique cut portions 252, 253 are continuous with each other. This ensures that the V-shaped separation perforation 251 is formed reliably.

[0094] 11 and 12, the dividing perforation 251 has a pair of diagonal cut portions 252, 253, and the angle formed by the diagonal cut portions 252 and 253 is an obtuse angle. As a result, when dividing the sachet 21, the sachet 21 is divided along the dividing perforation 251, making it difficult for the sachet 21 to tear toward the opening cut portion 255. Since it is possible to prevent the sachet 21 from being accidentally opened when dividing the sachet 21, the handleability of the sachet 21 can be improved.

[0095] As shown in Figs. 4-6 and 13-15, the perforation forming blade 71 includes a plate-shaped base 120 and a plurality of blade portions 130 that protrude from the base 120 in the protruding direction and are aligned in the arranging direction. As shown in Figs. 7-9 and 16-18, each of the plurality of blade portions 130 has a flat first blade surface 131 and a flat second blade surface 132 on the front side, a flat third blade surface 133 on the back side, and a cutting edge 130P that constitutes the apex of the blade portion 130. The first blade surface 131 and the second blade surface 132 extend from the cutting edge 130P toward the base 120 so as to be inclined with respect to the protruding direction and to be inclined with respect to the arranging direction, and the ridge lines that intersect with each other form a first cutting edge 141. The third blade surface 133 is inclined with respect to the protruding direction and extends from the cutting edge 130P toward the base 120 parallel to the arranging direction.

[0096] When forming the perforation 25 in the packaging material 2, the perforation forming blade 71 is pressed against the packaging material 2. The cutting edge 130P of the blade portion 130 of the perforation forming blade 71 comes into contact with the packaging material 2. The perforation forming blade 71 is pressed against the packaging material 2, and a V-shaped dividing perforation 251 is formed in the packaging material 2 along the second cutting edge 142 and the third cutting edge 143 of the blade portion 130. An opening cut portion 255 extending in the longitudinal direction of the packaging material 2 is formed in the packaging material 2 along the first cutting edge 141 of the blade portion 130. The perforation forming blade 71 can be used to reliably form the perforation 25 shown in FIGS. 11 and 12 in the packaging material 2.

[0097] 3(B), when forming perforation 25 in packaging material 2, part of blade portion 130 penetrates packaging material 2. The length by which blade portion 130 penetrates packaging material 2 may be less than half the length from bottom surface 153 of groove portion 150 to cutting tip 130P at the apex of blade portion 130 in the protruding direction. If blade portion 130 penetrates packaging material 2 by too much, packaging material 2 will tear too much, making it difficult to form perforation 25 in the intended shape. By appropriately setting the length by which blade portion 130 penetrates packaging material 2, perforation 25 in the desired shape can be reliably formed.

[0098] 7, 9, 16, and 18, the first blade surface 131 and the second blade surface 132 intersect at the center of the blade portion 130 in the arrangement direction. The ridge where the first blade surface 131 and the second blade surface 132 intersect with each other forms the first blade edge 141, which forms the opening cut portion 255 in the packaging material 2. By giving the perforation forming blade 71 the above-mentioned shape, it is possible to reliably form the opening cut portion 255 that is continuous with the bent portion of the separation perforation 251.

[0099] 7, 9, 16, and 18, the first blade surface 131 and the second blade surface 132 are symmetrical with respect to the first blade edge 141. The ridge where the first blade surface 131 and the third blade surface 133 intersect with each other forms the second blade edge 142, and the ridge where the second blade surface 132 and the third blade surface 133 intersect with each other forms the third blade surface 133, and the second blade edge 142 and the third blade edge 143 form a dividing perforation 251 in the packaging material 2. By forming the perforation forming blade 71 in the above-mentioned shape, it is possible to reliably form a V-shaped dividing perforation 251.

[0100] 7, 9, 16, and 18, the first blade edge 141 extends perpendicular to the arrangement direction. By forming the perforation forming blade 71 in the above-mentioned shape, the opening notch 255 extending in the longitudinal direction of the packaging material 2 can be reliably formed.

[0101] 10, the angle at which first blade edge 141 is inclined relative to the protruding direction is equal to the angle at which third blade surface 133 is inclined relative to the protruding direction. By forming first blade edge 141 on the front side of blade portion 130 and forming third blade surface 133, which forms a tapered surface, at the tip portion on the back side of blade portion 130, it is possible to reliably form opening incision portion 255 extending in the longitudinal direction of packaging material 2.

[0102] 19, the angle at which the first blade edge 141 is inclined relative to the protruding direction is greater than the angle at which the third blade surface 133 is inclined relative to the protruding direction. By giving the perforation forming blade 71 the above-described shape, the opening notch 255 extending in the longitudinal direction of the packaging material 2 can be reliably formed.

[0103] 9 and 18, when looking at blade portion 130 in the protruding direction, first blade surface 131 and second blade surface 132 have congruent trapezoidal shapes, and third blade surface 133 has a pentagonal shape with two right angles. By giving perforation forming blade 71 the above-mentioned shape, perforation 25 having dividing perforation 251 and opening cut portion 255 can be reliably formed in packaging material 2.

[0104] As shown in Figs. 1 to 3, the packaging device 1 includes a packaging unit 9. The packaging unit 9 uses a long sheet-like packaging material 2 to form sachets 21 in which objects to be packaged are packaged one at a time. The packaging unit 9 includes a perforation forming blade 71. As shown in Figs. 11 and 12, the perforation forming blade 71 forms perforations 25 in which a plurality of pores 250 are aligned in the short direction of the packaging material 2 in a partitioning section 27 that separates two sachets 21 adjacent in the longitudinal direction of the packaging material 2. As shown in Figs. 4 to 6 and 13 to 15, the perforation forming blade 71 has a plate-like base 120 and a plurality of blade portions 130 that protrude from the base 120 in the protruding direction and are aligned in the arranging direction.

[0105] 7 to 9 and 16 to 18, each of the blade portions 130 has a flat first blade surface 131 and a flat second blade surface 132 on the front side, a flat third blade surface 133 on the back side, and a cutting edge 130P that constitutes the apex of the blade portion 130. The first blade surface 131 and the second blade surface 132 extend from the cutting edge 130P toward the base 120 so as to be inclined with respect to the protruding direction and to be inclined with respect to the arrangement direction, and the ridge lines that intersect with each other form the first cutting edge 141. The third blade surface 133 is inclined with respect to the protruding direction and extends from the cutting edge 130P toward the base 120 parallel to the arrangement direction.

[0106] A packaging device 1 including such a perforation forming blade 71 can reliably form the perforations 25 shown in Figures 11 and 12 in the partitions 27 that separate the sachet 21 when forming the sachet 21.

[0107] <Additional Notes> The above description includes the following additional features.

[0108] (Appendix 1) A plate-shaped base; A plurality of blade portions protruding from the base in a protruding direction and arranged in an arrangement direction perpendicular to the protruding direction, Each of the plurality of blade portions has a flat first blade surface and a flat second blade surface on a front side, a flat third blade surface on a back side, and a cutting point that constitutes a vertex of the blade portion; The first blade surface and the second blade surface extend from the cutting edge toward the base so as to be inclined with respect to the protruding direction and the arrangement direction, and ridges that intersect with each other form a cutting edge, The third blade surface is a perforation forming blade that is inclined with respect to the protruding direction and extends from the cutting tip toward the base in parallel with the arrangement direction.

[0109] (Appendix 2) The perforation forming blade described in Appendix 1, wherein the first blade surface and the second blade surface intersect at a center portion of the blade portion in the arrangement direction.

[0110] (Appendix 3) 3. The perforation forming blade according to claim 1 or 2, wherein the first blade surface and the second blade surface are symmetrical with respect to the cutting edge.

[0111] (Appendix 4) 4. The perforation forming blade of claim 1, wherein the cutting edge extends perpendicular to the arrangement direction.

[0112] (Appendix 5) 5. The perforation forming blade of claim 1, wherein the angle at which the blade tip is inclined relative to the protruding direction and the angle at which the third blade surface is inclined relative to the protruding direction are equal to each other.

[0113] (Appendix 6) 5. The perforation forming blade of claim 1, wherein the angle at which the blade tip is inclined relative to the protruding direction is greater than the angle at which the third blade surface is inclined relative to the protruding direction.

[0114] (Appendix 7) 7. The perforation forming blade according to any one of claims 1 to 6, wherein, when viewing the blade portion in the protruding direction, the first blade surface and the second blade surface have a congruent trapezoidal shape, and the third blade surface has a pentagonal shape with two right angles.

[0115] The embodiments disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0116] 1 Packaging device, 2 Packaging material, 3 Packaging material roll, 4 Printing section, 5 Drug supply section, 6 Storage section forming section, 7 Perforation forming section, 8 Packaging material conveying section, 9 Packaging section, 21 Sachet bag, 22 Storage section, 23 Longitudinal fusion section, 24 Shortitudinal fusion section, 25 Perforation, 25A Separation start section, 26 Separation area, 27 Partition section, 61 Heating member, 62 Receiving member, 71 Perforation forming blade, 72 Slit groove, 100 Drug, 120 Base, 121 First base surface, 122 Second base surface, 130 Blade section, 130P Cutting edge, 131 First blade surface, 132 Second blade surface, 133 Third blade surface, 134 Fourth surface, 141 First blade edge, 142 Second blade edge, 143 Third blade edge, 144 4th ridge, 145 5th ridge, 146 6th ridge, 147 7th ridge, 148 8th ridge, 149 9th ridge, 150 groove, 151 1st side, 152 2nd side, 153 bottom, 160 auxiliary blade, 250 fine hole, 251 perforation for separating, 252, 253 diagonal cut portion, 255 cut portion for opening.

Claims

1. A plate-shaped base; A plurality of blade portions protruding from the base in a protruding direction and arranged in an arrangement direction perpendicular to the protruding direction, Each of the plurality of blade portions has a flat first blade surface and a flat second blade surface on a front surface side, a flat third blade surface on a back surface side, and a cutting tip that constitutes an apex of the blade portion, The first blade surface and the second blade surface extend from the cutting edge toward the base so as to be inclined with respect to the protruding direction and the arranging direction, and ridge lines intersecting with each other form a cutting edge, The third blade surface is inclined with respect to the protruding direction and extends from the cutting tip toward the base in parallel with the arrangement direction.

2. The perforation forming blade according to claim 1 , wherein the first blade surface and the second blade surface intersect at a center portion of the blade portion in the arrangement direction.

3. The perforation forming blade according to claim 2 , wherein the first blade surface and the second blade surface are symmetrical with respect to the cutting edge.

4. The perforation forming blade according to claim 1 , wherein the cutting edge extends perpendicular to the arrangement direction.

5. The perforation forming blade according to claim 1 , wherein an angle at which the blade tip is inclined with respect to the protruding direction and an angle at which the third blade surface is inclined with respect to the protruding direction are equal to each other.

6. The perforation forming blade according to claim 1 , wherein an angle at which the blade tip is inclined with respect to the protruding direction is greater than an angle at which the third blade surface is inclined with respect to the protruding direction.

7. The perforation forming blade according to claim 1, wherein when viewing the blade portion in the protruding direction, the first blade surface and the second blade surface have congruent trapezoidal shapes, and the third blade surface has a pentagonal shape with two right angles.

8. A package bag in which the packaging objects are packaged one by one, A partition separating the two adjacent sachets has a perforation formed therein with a plurality of pores aligned in one direction; Each of the plurality of pores of the sachet bag has a flat V-shaped dividing perforation that is bent in the one direction, and an opening slit that is continuous with the bent portion of the dividing perforation and extends in a direction perpendicular to the one direction.

9. The sachet according to claim 8 , wherein the opening notch extends from a bottom of the V-shape in a direction away from both ends of the separation perforation.

10. 10. The sachet bag according to claim 8 or 9, wherein the dividing perforation has a pair of oblique cut portions extending at an angle with respect to the one direction, and ends of the pair of oblique cut portions are continuous with each other.

11. A packaging unit is provided that uses a long sheet-like packaging material to form a package bag in which each of the objects to be packaged is packaged individually, The packaging unit includes a perforation forming blade that forms a perforation in which a plurality of pores are aligned in the short direction of the packaging material in a partition portion that separates the two sachets adjacent to each other in the longitudinal direction of the packaging material, The perforation forming blade has a plate-shaped base and a plurality of blade portions protruding from the base in a protruding direction and aligned in an arrangement direction perpendicular to the protruding direction, Each of the plurality of blade portions has a flat first blade surface and a flat second blade surface on a front surface side, a flat third blade surface on a back surface side, and a cutting tip that constitutes an apex of the blade portion, The first blade surface and the second blade surface extend from the cutting edge toward the base so as to be inclined with respect to the protruding direction and the arranging direction, and ridge lines intersecting with each other form a cutting edge, A packaging device, wherein the third blade surface is inclined with respect to the protruding direction and extends from the cutting tip toward the base parallel to the arrangement direction.

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