Packaging bag

Abstract

To improve the handling of packaging bags.SOLUTION: In each packaging bag 21 in which a packaging object is packaged individually, a partition part 27 which separates the adjacent two packaging bags 21 is formed with a separation perforation 251 in which plural pores extending in one direction are aligned continuously in one direction, and is further formed with an opening notch 255 extending in a direction orthogonal in one direction. The opening notch 255 is discontinuous with the pores.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present disclosure relates to a sachet. [Background technology]

[0002] Japanese Patent Publication No. 2012-131551 (Patent Document 1) describes a drug packet in which multiple packet regions in which drugs are encapsulated are formed in overlapping sheets, and dividing perforations consisting of multiple cutouts arranged in a row are formed between adjacent packet regions, and the cutouts have dividing cutouts extending in the dividing direction and opening cutouts extending laterally in the dividing direction, continuous with the dividing cutouts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-131551 Summary of the Invention [Problem to be solved by the invention]

[0004] In a packaging device that uses a long sheet of packaging material to form sachets in which individual packages of packaging objects are 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 sachet and removes the packaging objects from the sachet.

[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] The sachet according to the present disclosure is a sachet in which each package of packaging object is packed, and a dividing perforation is formed in a partition separating two adjacent sachets, with a plurality of pores extending in one direction and aligned continuously in one direction, and an opening slit is further formed extending in a direction perpendicular to the one direction. The opening slit is discontinuous with the pores. [Effects of the Invention]

[0007] According to the present disclosure, the ease of handling of sachets can be improved. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic configuration diagram of a packaging device according to an embodiment. [Figure 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. FIG. [Figure 3] 2 is a schematic diagram showing a schematic configuration of a perforation forming section in the packaging device shown in FIG. 1. FIG. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a perspective view showing the configuration of a perforation forming blade. [Figure 7] FIG. 2 is an enlarged perspective view showing the periphery of the blade portion. [Figure 8] FIG. 3 is an enlarged cross-sectional view showing the periphery of the blade portion. [Figure 9] FIG. 10 is a schematic diagram showing a sachet on which perforations are formed. [Figure 10] 10 is an enlarged schematic view of a region X shown in FIG. 9. FIG. [Figure 11] FIG. 10 is a perspective view showing the configuration of a perforation-forming blade according to a second embodiment. [Figure 12] FIG. 10 is a perspective view of a perforation forming blade according to a second embodiment. [Figure 13] FIG. 10 is a perspective view of a notch forming blade according to a second embodiment. [Figure 14]FIG. 10 is a view of a perforation forming blade body of a second embodiment as viewed from the surface side of the perforation forming blade. [Figure 15] FIG. 10 is a view of the perforation forming blade body of the second embodiment as seen from the back side of the perforation forming blade. [Figure 16] FIG. 10 is a plan view of a perforation-forming blade according to a second embodiment. [Figure 17] FIG. 10 is a schematic diagram showing a sachet having perforations according to a second embodiment. [Figure 18] FIG. 18 is an enlarged schematic view of an area XVIII shown in FIG. 17. DETAILED DESCRIPTION OF THE INVENTION

[0009] 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 descriptions thereof will not be repeated. In the drawings, configurations may be omitted or simplified for the sake of convenience. It is also intended from the beginning that any configurations may be extracted from the embodiments and arbitrarily combined.

[0010] [First embodiment] <Packaging device 1> FIG. 1 is a schematic diagram of a packaging device 1 according to an embodiment.

[0011] 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 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.

[0012] The packaging device 1 is a drug packaging device for packaging drugs based on a prescription. A prescription is issued to a patient by a doctor. 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 doses based on such a prescription.

[0013] A packaging roll 3 is attached to the packaging device 1. The packaging 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).

[0014] 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."

[0015] The packaging device 1 includes a packaging section 9. The packaging section 9 includes a medicine supply section 5, a container section forming section 6, and a perforation forming section .

[0016] The medicine supply unit 5 supplies medicine to the packaging material 2 transported by the packaging material transport unit 8. The medicine is supplied in single doses based on the prescription. The container forming unit 6 forms a container using the packaging material 2 transported by the packaging material transport unit 8. The container forming unit 6 stores the medicine. After the medicine is supplied from the medicine supply 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 supply unit 5 for each single dose, and forms a packaging bag that is a package with the medicine stored inside.

[0017] The perforation forming section 7 is provided in the storage section forming section 6. The perforation forming section 7 forms perforations that extend 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 multiple small holes that are lined up 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. Adjacent packaging bags can be easily separated by cutting the packaging material 2 along the perforations.

[0018] The packaging device 1 further includes a printing unit 4. The printing unit 4 affixes a predetermined marking to the packaging material 2 being unwound from the packaging material roll 3 and conveyed by the packaging material conveying unit 8. The predetermined marking is information related to the drug 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. From upstream to downstream in the conveying direction DR, the printing unit 4, the drug supply unit 5, and the container forming unit 6 are arranged in this order. The printing unit 4 prints information related to the drug on the packaging material 2 prior to the container forming unit 6 heat-sealing the packaging material 2. The information related to the drug includes the name and age of the person taking the drug, the time of administration (usage), the name and amount (quantity, weight) of the drug, etc.

[0019] 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.

[0020] 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 lateral direction of the packaging material 2. Both lateral edge portions 2a of the packaging material 2 are located above the lateral center 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.

[0021] The packaging material 2 may be folded in half beforehand. 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 beforehand is wound in a roll shape.

[0022] 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 produced. 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.

[0023] 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 a drug inlet 52 at its tip for injecting the drug 100 into the packaging material 2. The drug inlet 52 is positioned 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.

[0024] 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 arranged opposite each other with the packaging material 2 sandwiched between them. 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 or move away from the packaging material 2.

[0025] 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 forms the horizontal bar 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 forms the vertical bar 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 arranged opposite each other, with the packaging material 2 sandwiched therebetween. The transverse portion 64 of the heating member 61 and the transverse portion 64 of the receiving member 62 are arranged opposite each other, with the packaging material 2 sandwiched therebetween.

[0026] In the storage section forming section 6, the heating member 61 is heated by a heater. In this state, the heating member 61 and the receiving member 62 apply pressure to the packaging material 2 from both sides. As a result, a longitudinal fused portion 23 and a lateral 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 lateral fused portion 24 is formed by heat-sealing a portion of the packaging material 2 sandwiched between the lateral portion 64 of the heating member 61 and the lateral portion 64 of the receiving member 62. The lateral fused portion 24 divides the inside of the packaging material 2 into a downstream side and an upstream side.

[0027] As a result, the packaging material 2 is divided by the fold of the folded packaging material 2, the longitudinal fused portion 23, and the two short-side fused portions 24 aligned in the conveyance direction DR, to form sachets 21. The short-side 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.

[0028] 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 the 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.

[0029] Fig. 3 is a schematic diagram showing the general 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 no perforation 25 is 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.

[0030] 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 overall in the short-side direction of the packaging material 2. The heating member 61 has a slit groove 72 formed by recessing a portion of the surface facing the packaging material 2. The slit groove 72 extends in the short-side direction of the packaging material 2.

[0031] The perforation-forming blade 71 is pressed against the packaging material 2 when the heating member 61 and the receiving member 62 apply pressure to the packaging material 2 from both sides. The cutting edge 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 cutting edge of the perforation-forming blade 71 has moved into the slit groove 72, as shown in FIG. 3(B). The perforation-forming blade 71, like the heating member 61 and the receiving member 62, is driven by the pressure motor 65 and moves relative to the receiving member 62. The perforation 25 is formed in the widthwise center of the short-side fused portion 24. Adjacent sachets 21 can be easily separated by cutting the packaging material 2 along the perforation 25.

[0032] 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 be configured to form the perforation 25 in the widthwise center of the already formed short-side fused 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.

[0033] 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 arranged 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, thereby conveying the packaging material 2.

[0034] In this packaging unit 9 (FIG. 1), the packaging material conveying unit 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 apply pressure to 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, longitudinal fused portions 23 are formed in the packaging material 2 so as to be continuous in the longitudinal direction of the packaging material 2, lateral fused portions 24 are formed at regular intervals in the longitudinal direction of the packaging material 2, and perforations 25 are formed at regular intervals in the longitudinal direction of the packaging material 2. In this way, a plurality of sachets 21 are formed in the longitudinal direction of the packaging material 2.

[0035] Sachets 21 are the portions between adjacent short-side fused portions 24 in the longitudinal direction of packaging material 2, and between adjacent perforations 25 in the longitudinal direction of packaging material 2. Short-side fused portions 24 form the boundaries between adjacent sachets 21 in the longitudinal direction of packaging material 2. Short-side portions 64 of heating member 61 and short-side portions 64 of receiving member 62 form the boundaries of sachets 21 aligned in the conveying direction DR.

[0036] Here, the length between the widthwise centers 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.

[0037] <Perforation blade 71> The perforation forming blade body 71 includes a perforation forming blade 110 and a notch forming blade 200. FIG. 4 is a front view of the perforation forming blade 110. The perforation forming blade 110 includes a base 120 and a plurality of blade portions 130. The base 120 has a flat plate-like shape that extends in the left-right direction and in the up-down direction in FIG. 4. As shown in FIG. 4, the base 120 has a generally rectangular shape as a whole.

[0038] Each of the multiple blade portions 130 protrudes from the base portion 120. The multiple blade portions 130 are arranged in a row. A valley portion 160 is formed between two adjacent blade portions 130. The two adjacent blade portions 130 are separated from each other by the valley portion 160. Each of the multiple blade portions 130 has a cutting point 130P that forms the apex of the blade portion 130.

[0039] An assembly hole 180 is formed in the base 120. The assembly hole 180 is used to assemble the incision forming blade 200 to the perforation forming blade 110.

[0040] 5 is a front view of the incision forming blade 200. The incision forming blade 200 has a plate-like shape as a whole. The incision forming blade 200 has an assembly portion 210, a base portion 220, and a blade portion 230.

[0041] The assembly part 210 has a generally rectangular plate-like outer shape. An oval assembly hole 212 is formed penetrating the assembly part 210. The assembly part 210 is used to assemble the incision forming blade 200 to the perforation forming blade 110.

[0042] The base portion 220 has a generally rectangular plate-like outer shape and is connected to the assembly portion 210 at its lower end.

[0043] The blade portion 230 is provided at the tip of the base portion 220. The tip of the base portion 220 is machined to form the blade portion 230. The blade portion 230 has a first cutting edge 231 and a second cutting edge 232. The blade portion 230 is formed so that the first cutting edge 231 and the second cutting edge 232 form a substantially V-shape. The first cutting edge 231 has a cutting edge 231P that forms the apex of the first cutting edge 231. The second cutting edge 232 has a cutting edge 232P that forms the apex of the second cutting edge 232. The cutting edges 231P, 232P form the apex of the incision forming blade 200. The cutting edges 231P, 232P form both ends of the blade portion 230.

[0044] A recess 240 is formed in the center of the blade portion 230. The recess 240 extends in the direction in which the base portion 220 extends (in FIG. 5, the vertical direction in the drawing). The recess 240 is interposed between the first cutting edge 231 and the second cutting edge 232. The first cutting edge 231 and the second cutting edge 232 are separated by the recess 240. The first cutting edge 231 and the second cutting edge 232 are discontinuous by the recess 240.

[0045] The first cutting edge 231 is inclined with respect to the extension direction of the base 220 so as to approach the tip of the incision forming blade 200 from the recess 240 toward the cutting tip 231P. The second cutting edge 232 is inclined with respect to the extension direction of the base 220 so as to approach the tip of the incision forming blade 200 from the recess 240 toward the cutting tip 232P. As a result, the first cutting edge 231 and the second cutting edge 232 form a substantially V-shape.

[0046] Fig. 6 is a perspective view showing the configuration of the perforation-forming blade body 71. Fig. 7 is an enlarged perspective view showing the periphery of the blade portions 130 and 230. Fig. 8 is an enlarged cross-sectional view showing the periphery of the blade portions 130 and 230. The base 220 and blade portion 230 of the incision-forming blade 200 are disposed through the assembly hole 180 of the perforation-forming blade 110, and the incision-forming blade 200 and the perforation-forming blade 110 are fixed together by an assembly member (not shown). In this way, the incision-forming blade 200 and the perforation-forming blade 110 constitute the perforation-forming blade body 71 having an integral structure.

[0047] When the incision forming blade 200 is attached to the perforation forming blade 110, the cutting edge 130P of the perforation forming blade 110 and the cutting edges 231P, 232P of the incision forming blade 200 are at the same position in the direction in which the blade portion 130 of the perforation forming blade 110 protrudes from the base portion 120. When the perforation forming blade body 71 is used to form the perforation 25 in the packaging material 2, the cutting edge 130P of the perforation forming blade 110 and the cutting edges 231P and 232P of the incision forming blade 200 come into contact with the packaging material 2 at approximately the same time.

[0048] When the incision forming blade 200 is assembled to the perforation forming blade 110, the recess 240 of the incision forming blade 200 is disposed across the front and back surfaces of the flat plate-shaped perforation forming blade 110. A first cutting edge 231 of the incision forming blade 200 is disposed on the front surface side of the perforation forming blade 110. A second cutting edge 232 of the incision forming blade 200 is disposed on the back surface side of the perforation forming blade 110.

[0049] A recess 240 is interposed between the blade portion 130 of the perforation forming blade 110 and the first cutting edge 231 of the incision forming blade 200. The blade portion 130 and the first cutting edge 231 are separated by the recess 240. The first cutting edge 231 is positioned away from the perforation forming blade 110. The blade portion 130 and the first cutting edge 231 are discontinuous by the recess 240.

[0050] A recess 240 is interposed between the blade portion 130 of the perforation forming blade 110 and the second cutting edge 232 of the incision forming blade 200. The blade portion 130 and the second cutting edge 232 are separated by the recess 240. The second cutting edge 232 is positioned away from the perforation forming blade 110. The blade portion 130 and the second cutting edge 232 are discontinuous by the recess 240.

[0051] <21 sachets, 25 perforations> 9 is a schematic diagram showing sachet 21 on which perforation 25 is formed. Sachet 21 is formed by dividing packaging material 2 by the fold of packaging material 2 folded in half, longitudinal fusion parts 23, and lateral fusion parts 24. A storage section 22 is formed inside sachet 21, and medicine is stored in storage section 22. Sachet 21 packs one package of medicine, which is the packaging object.

[0052] FIG. 10 is a schematic diagram showing an enlarged view of region X shown in FIG. 9. Referring also to FIG. 3, a dividing region 26 where the packaging material 2 is not heat-sealed is provided between two adjacent lateral 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 pressurize the packaging material 2 to form the lateral fused portions 24, the perforation-forming blade 71 is pressed against the packaging material 2, thereby forming a perforation 25 in the dividing region 26. The two lateral fused portions 24 and the dividing region 26 sandwiched therebetween, shown in FIG. 10, form a partitioning region 27 that separates two sachets 21 adjacent in the longitudinal direction of the packaging material 2. The perforation 25 is formed in the partitioning region 27.

[0053] The perforations 25 include dividing perforations 251. In Figures 9 and 10, the up-down direction in the figures is the short-side direction of the packaging material 2. The dividing perforations 251 include a plurality of pores extending in the short-side direction of the packaging material 2. The multiple pores are lined up continuously in the short-side direction of the packaging material 2. The multiple pores are formed in a row at intervals in the short-side direction of the packaging material 2. The multiple pores are lined up on an imaginary straight line extending in the short-side direction of the packaging material 2.

[0054] The perforation 25 further includes an opening slit 255. In Figures 9 and 10, the left-right direction in the figures is the longitudinal direction of the packaging material 2. The opening slit 255 is formed in the dividing region 26 so as to extend in the longitudinal direction of the packaging material 2. The opening slit 255 extends in a direction perpendicular to the direction in which the perforations extend. The opening slit 255 is located in an area in the short direction of the packaging material 2 that overlaps with one of the multiple perforations of the dividing perforation 251.

[0055] The opening slit 255 has a slit 255A and a slit 255B. The slit 255A is located on one side of the separating perforation 251 in the longitudinal direction of the packaging material 2. The slit 255B is located on the other side of the separating perforation 251 in the longitudinal direction of the packaging material 2. A pair of slits 255A, 255B is formed with one small hole between them.

[0056] Cut 255A is formed away from the small holes that make up separation perforation 251 in the longitudinal direction of packaging material 2. An uncut portion 255C where packaging material 2 is not cut is formed between cut 255A and the small holes. Cut 255B is formed away from the small holes that make up separation perforation 251 in the longitudinal direction of packaging material 2. An uncut portion 255C where packaging material 2 is not cut is formed between cut 255B and the small holes. Opening cut portion 255 is discontinuous with the small holes that make up separation perforation 251.

[0057] The lateral fusion portion 24 has a curved portion 24A. The lateral fusion portion 24 is curved in a range that overlaps with the opening notch 255 in the lateral direction of the packaging material 2, thereby forming the curved portion 24A. The curved portion 24A is curved in a direction away from the small hole of the separation perforation 251. The lateral fusion portion 24 is formed so that the width of the curved portion 24A is not smaller than the width of the portion other than the curved portion 24A. The curved portion 24A has a width that is equal to or greater than the width of the portion other than the curved portion 24A. The lateral fusion portion 24 may have a constant width across the curved portion 24A and the portion other than the curved portion 24A. The lateral fusion portion 24 may have a constant width across the curved portion 24A and the portion other than the curved portion 24A.

[0058] Due to the formation of curved portion 24A, partition portion 27 separating two adjacent sachets 21 is formed with a wide area that overlaps with opening slit 255 in the short direction of packaging material 2.

[0059] Separation start portion 25A is formed at the end of separation perforation 251. Separation start portion 25A is formed on the straight line on which separation perforations 251 are aligned. Separation start portion 25A and separation perforations 251 are aligned continuously in the short-side direction of packaging material 2. Separation start portion 25A is formed so as to reach the bottom end of sachet 21.

[0060] When sachet 21 is torn along perforation 25, separation initiation portion 25A is the starting point for the separation. A handler separating sachet 21 holds one of two adjacent sachets 21 between the fingers of his right hand and the other between the fingers of his left hand, and moves the two sachets 21 held in both hands away from each other so as to tear perforation 25 from separation initiation portion 25A, thereby separating the two adjacent sachets 21 along perforation 25. In Figures 9 and 10, separation initiation portion 25A is formed at the bottom end of sachet 21, and therefore the direction in which sachet 21 is torn is upward in the figures.

[0061] Slit 255B of opening slit 255 is formed on the left edge of each separated individual sachet 21. Slit 255A of opening slit 255 is formed on the right edge of sachet 21. Opening slit 255 is formed on both the left and right edges of sachet 21. A handler wishing 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 the opened sachet 21.

[0062] Since opening notches 255 are formed on both edges of sachet 21, the opening direction is not limited to either the left or right direction. When opening sachet 21, sachet 21 may be cut in either the left or right direction. Sachet 21 is configured so that it can be opened from either the left or right direction.

[0063] Because opening slit 255 is formed in only one location in the up-down direction of sachet 21, a handler opens sachet 21 using that location as a starting point. As described above, packaging device 1 is equipped with printing unit 4, which can be used to mark sachet 21 with a predetermined marking. For example, if a mark indicating the position of opening slit 255 is marked on sachet 21, a handler of sachet 21 can easily open sachet 21 using opening slit 255 as a starting point. By marking sachet 21 with a direction in which sachet 21 should be separated, a handler of sachet 21 can easily separate sachet 21 using separation start portion 25A as the separation start point.

[0064] <Action and effect> Although some of the description overlaps with the above, the characteristic configuration of this embodiment, as well as its actions and effects, can be listed as follows.

[0065] As shown in Figures 9 and 10, sachets 21, in which each package of packaging material is packed, have separating perforations 251 formed in partition section 27 that separates two adjacent sachets 21. Separating perforations 251 have a plurality of pores that extend in the short direction of long sheet-like packaging material 2. Separating perforations 251 are formed by a plurality of pores that are lined up continuously in the short direction of packaging material 2. Sachets 21 are further formed with opening slits 255 that extend in the longitudinal direction of packaging material 2. Opening slits 255 are discontinuous with the pores that form separating perforations 251.

[0066] After sachet 21 is separated along separation perforations 251, opening slits 255 are formed on the edges of individual sachet 21. A person handling sachet 21 can easily open sachet 21 using these opening slits 255 as the starting point for opening.

[0067] Opening slit 255 extends in a direction perpendicular to the direction in which sachet 21 is divided. The small hole constituting dividing perforation 251 and opening slit 255 are not connected, and uncut portion 255C is interposed between the small hole and opening slit 255. Sachet 21 is formed with perforation 25 so that, when dividing sachet 21, sachet 21 is less likely to tear toward opening slit 255 and is easier to divide along dividing perforation 251. This makes it possible to prevent sachet 21 from being accidentally opened when dividing sachet 21, thereby improving the handleability of sachet 21.

[0068] 9 and 10, opening slit 255 may be located in a range that overlaps with the hole of dividing perforation 251 in the short direction of packaging material 2. By determining the position of opening slit 255 relative to the hole in this way, when sachet 21 is divided, sachet 21 is divided along dividing perforation 251, making it less likely to tear towards opening slit 255. Because it is possible to improve the resistance of sachet 21 to tearing towards opening slit 255, it is possible to reliably prevent sachet 21 from being opened when divided.

[0069] 9 and 10 , a pair of notches 255A, 255B of opening slit 255 may be formed with the small hole of separating perforation 251 sandwiched therebetween. After sachet 21 is separated along separating perforation 251, notch 255A is formed on one edge of each sachet 21 and notch 255B is formed on the other edge. Because opening slit 255 is formed so that sachet 21 can be opened from either of the edges, the handleability of sachet 21 can be improved.

[0070] 9 and 10 , the lateral fusion portion 24 may have a curved portion 24A in which the area that overlaps with the tear slit 255 in the lateral direction of the packaging material 2 is curved in a direction away from the pore. This ensures the width of the lateral fusion portion 24, thereby ensuring the sealing strength of the lateral fusion portion 24. Rather than increasing the overall width of the lateral fusion portion 24, the lateral fusion portion 24 is formed with a curved portion 24A to give it a shape that avoids the tear slit 255, thereby minimizing the reduction in volume of the storage portion 22 of the sachet 21 and ensuring the storage capacity of the medicine in the sachet 21.

[0071] To ensure the width of the lateral fused portion 24, the lateral fused portion 24 may be folded, but when powder medicine is stored in the sachet 21, the powder medicine may get caught at the bent portion, making it difficult to dispense the powder medicine from the sachet 21. By forming a curved portion 24A that smoothly bends the lateral fused portion 24 into a bow, it is possible to prevent the powder medicine from getting caught, and it becomes possible to easily dispense the powder medicine from the sachet 21.

[0072] 9 and 10 , the partition 27 that separates the sachet 21 may be formed so that the area that overlaps with the opening slit 255 in the short direction of the packaging material 2 is wide. The short-side fused portion 24 that constitutes the partition 27 has a curved portion 24A that is curved in the area that overlaps with the opening slit 255 in the short direction of the packaging material 2, so that the partition 27 can be reliably formed with a portion that is wide in the short direction of the packaging material 2.

[0073] By pressing the perforation-forming blade 71 shown in Figures 4 to 8 against the packaging material 2, it is possible to form a small hole that extends in the widthwise direction of the packaging material 2, starting from the cutting edge 130P and along the blade portion 130. Starting from the cutting edges 231P and 232P, incisions 255A and 255B that extend in the lengthwise direction of the packaging material 2 can be formed along the first cutting edge 231 and the second cutting edge 232 of the incision-forming blade 200. Using the perforation-forming blade 71 shown in Figures 4 to 8, the perforations 25 shown in Figures 9 and 10 can be reliably formed in the packaging material 2. By appropriately setting the length that the blade portions 130 and 230 penetrate the packaging material 2, it is possible to reliably form perforations 25 of the desired shape.

[0074] A recess 240 is formed in the incision-forming blade 200, and when the incision-forming blade 200 is assembled to the perforation-forming blade 110, the blade portion 130 of the perforation-forming blade 110 and the first cutting edge 231 and second cutting edge 232 of the incision-forming blade 200 are arranged apart. In this way, the pore formed by the blade portion 130 and the opening incision portion 255 formed by the first cutting edge 231 and second cutting edge 232 can be reliably made discontinuous.

[0075] The first cutting edge 231 and the second cutting edge 232 have a pointed shape that points toward the leading edges 231P and 232P as they move away from the recess 240. The first cutting edge 231 and the second cutting edge 232 have a substantially V-shape. This allows the first cutting edge 231 and the second cutting edge 232 to reliably form the incisions 255A and 255B in the packaging material 2. The positioning precision of the perforation forming blade 110 and the incision forming blade 200 can be relaxed.

[0076] Note that, as long as the positioning of the perforation forming blade 110 and the incision forming blade 200 can be performed with high precision, the first cutting edge 231 and the second cutting edge 232 do not necessarily have to have sharp cutting edges 231P, 232P. The first cutting edge 231 and the second cutting edge 232 may have a shape that extends in a straight line. The first cutting edge 231 and the second cutting edge 232 may be arranged to extend in the thickness direction of the perforation forming blade 110 when the incision forming blade 200 is assembled to the perforation forming blade 110.

[0077] [Second embodiment] <Perforation blade 71> 11 is a perspective view showing the configuration of a perforation-forming blade body 71 of the second embodiment. The perforation-forming blade body 71 includes a perforation-forming blade 110 and a notch-forming blade 200.

[0078] 12 is a perspective view of a perforation forming blade 110 of the second embodiment. The perforation forming blade 110 includes a base 120 and a plurality of blade portions 130. The base 120 has a flat plate-like shape. The base 120 has a generally rectangular shape as a whole. Each of the plurality of blade portions 130 protrudes from the base 120. The plurality of blade portions 130 are arranged in a row.

[0079] A groove 150 is formed between two adjacent blade portions 130. The two adjacent blade portions 130 are separated from each other by the groove 150. 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 surface side shown in FIG. 12. Each of the plurality of blade portions 130 has a flat third blade surface 133 and a flat fourth blade surface 134 (see FIG. 15) on the back surface side opposite the front surface. Both the front surface side and the back surface side of the blade portion 130 are processed, and flat blade surfaces are formed on both the front surface side and the back surface side of the blade portion 130.

[0080] An attachment groove portion 170 is formed between a pair of adjacent blade portions 130. A first side surface 171 and a second side surface 172 form the side surfaces of the groove. The first side surface 171 and the second side surface 172 extend parallel to each other and are spaced apart. A bottom surface 173 forms the bottom surface of the groove. The first side surface 171 and the second side surface 172 are perpendicular to the bottom surface 173. As shown in FIG. 11 , the incision forming blade 200 is attached to the attachment groove portion 170.

[0081] 13 is a perspective view of the incision forming blade of the second embodiment. The incision forming blade 200 has an assembly part 210, a base part 220, and a blade part 230.

[0082] The assembly part 210 has a generally rectangular plate-like outer shape. An oval assembly hole 212 is formed penetrating the assembly part 210. The assembly part 210 is used to assemble the incision forming blade 200 to the perforation forming blade 110.

[0083] The base 220 has a rectangular columnar shape. The base 220 is connected at its lower end to the assembly part 210. The base 220 has four side surfaces. The base 220 has a flat first side surface 221, a flat second side surface 222, a flat third side surface 223, and a flat fourth side surface 224. The first side surface 221 and the third side surface 223 are parallel to each other. The second side surface 222 and the fourth side surface 224 are parallel to each other. The second side surface 222 and the fourth side surface 224 are perpendicular to the first side surface 221.

[0084] The blade portion 230 is provided at the tip of the base portion 220. The tip of the base portion 220 is machined to form the blade portion 230. The blade portion 230 has a flat blade surface 233. The incision forming blade 200 has a cutting edge 234 that forms the apex of the incision forming blade 200. The blade surface 233 is inclined with respect to the extension direction of the base portion 220. The ridge where the blade surface 233 and the third side surface 223 intersect with each other forms the cutting edge 234. The blade surface 233 and the third side surface 223 intersect at the cutting edge 234, forming an acute angle. The thickness of the blade portion 230 of the incision forming blade 200 gradually decreases toward the cutting edge 234 at the tip.

[0085] FIG. 14 is a view of the perforation forming blade 71 of the second embodiment as seen from the front side of the perforation forming blade 110. The outer surface of the perforation forming blade 110, including the first blade surface 131 and the second blade surface 132 of the blade portion 130 shown in FIG. 14, is referred to as the front side of the perforation forming blade 110. FIG. 15 is a view of the perforation forming blade 71 of the second embodiment as seen from the back side of the perforation forming blade 110. The outer surface of the perforation forming blade 110, including the third blade surface 133 and the fourth blade surface 134 of the blade portion 130 shown in FIG. 15, is referred to as the back side of the perforation forming blade 110. FIG. 16 is a plan view of the perforation forming blade 71 of the second embodiment.

[0086] Figure 14 shows the perforation-forming blade 71 as seen in the direction of arrow XIV shown in Figures 11 and 16. Figure 15 shows the perforation-forming blade 71 as seen in the direction of arrow XV shown in Figures 11 and 16. Figure 16 shows the perforation-forming blade 71 as seen in the direction of arrow XVI shown in Figures 11, 14, and 15.

[0087] The first side surface 151 and the second side surface 152 shown in FIGS. 14 and 15 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 spaced apart. The bottom surface 153 constitutes the bottom surface of the groove portion 150. 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.

[0088] Each of the plurality of blade portions 130 of the perforation forming blade 110 has a cutting point 130P that forms the apex of the blade portion 130.

[0089] The first blade surface 131 and the second blade surface 132 intersect at the center of the blade portion 130 in the direction in which the multiple blade portions 130 are arranged. The third blade surface 133 and the fourth blade surface 134 intersect at the center of the blade portion 130 in the direction in which the multiple blade portions 130 are arranged. The first blade surface 131 and the third blade surface 133 intersect at the center of the blade portion 130 in the thickness direction of the perforation forming blade 110. The second blade surface 132 and the fourth blade surface 134 intersect at the center of the blade portion 130 in the thickness direction of the perforation forming blade 110.

[0090] The ridge line where the first blade surface 131 and the third blade surface 133 intersect with each other constitutes the first cutting edge 141. The first blade surface 131 and the third blade surface 133 are symmetrical with respect to the first cutting edge 141. The ridge line where the second blade surface 132 and the fourth blade surface 134 intersect with each other constitutes the second cutting edge 142. The second blade surface 132 and the fourth blade surface 134 are symmetrical with respect to the second cutting edge 142.

[0091] The ridge line where the first blade surface 131 and the second blade surface 132 intersect with each other constitutes a third cutting edge 143. The first blade surface 131 and the second blade surface 132 are symmetrical with respect to the third cutting edge 143. The ridge line where the third blade surface 133 and the fourth blade surface 134 intersect with each other constitutes a fourth cutting edge 144. The third blade surface 133 and the fourth blade surface 134 are symmetrical with respect to the fourth cutting edge 144.

[0092] The first cutting edge 141 and the second cutting edge 142 are perpendicular to the thickness direction of the perforation forming blade 110. The first cutting edge 141 and the second cutting edge 142 intersect at the cutting edge 130P, forming 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 direction in which the multiple blade portions 130 are arranged. The angle at which the first cutting edge 141 is inclined relative to the direction in which the blade portion 130 protrudes from the base 120 and the angle at which the second cutting edge 142 is inclined are equal to each other.

[0093] The third cutting edge 143 and the fourth cutting edge 144 are perpendicular to the direction in which the multiple cutting portions 130 are arranged. The third cutting edge 143 and the fourth cutting edge 144 intersect at the cutting edge 130P, forming an acute angle. The third cutting edge 143 and the fourth cutting edge 144 intersect at the center of the cutting portion 130 in the thickness direction of the perforation forming blade 110. The angle at which the third cutting edge 143 is inclined and the angle at which the fourth cutting edge 144 is inclined relative to the direction in which the cutting portion 130 protrudes from the base 120 are equal to each other.

[0094] The angle at which the first cutting edge 141 and the second cutting edge 142 are inclined relative to the direction in which the blade portion 130 protrudes from the base 120 is larger than the angle at which the third cutting edge 143 and the fourth cutting edge 144 are inclined relative to the direction in which the blade portion 130 protrudes from the base 120. The angle formed between the first cutting edge 141 and the second cutting edge 142 is larger than the angle formed between the third cutting edge 143 and the fourth cutting edge 144.

[0095] The first blade surface 131, the second blade surface 132, the third blade surface 133, and the fourth blade surface 134 extend from the cutting edge 130P toward the base 120 so as to be inclined with respect to the direction in which the blade portion 130 protrudes from the base 120 and with respect to the direction in which the multiple blade portions 130 are arranged.

[0096] The first blade surface 131 and the fourth blade surface 134 have the same shape. The first blade surface 131 and the fourth blade surface 134 are formed in shapes that are 180° symmetrical about an axis of symmetry that extends in the direction in which the blade portion 130 protrudes from the base 120 and passes through the cutting tip 130P. The second blade surface 132 and the third blade surface 133 have the same shape. The second blade surface 132 and the third blade surface 133 are formed in shapes that are 180° symmetrical about an axis of symmetry that extends in the direction in which the blade portion 130 protrudes from the base 120 and passes through the cutting tip 130P. When viewing the blade portion 130 in the direction in which the blade portion 130 protrudes from the base 120, the first blade surface 131, the second blade surface 132, the third blade surface 133, and the fourth blade surface 134 have congruent rectangular shapes.

[0097] The base 220 and blade 230 of the incision-forming blade 200 are arranged to be housed in the mounting groove 170 of the perforation-forming blade 110, and the incision-forming blade 200 and the perforation-forming blade 110 are fixed together by an assembly member (not shown). As a result, the incision-forming blade 200 and the perforation-forming blade 110 constitute a perforation-forming blade body 71 with an integral structure.

[0098] When the incision forming blade 200 is assembled to the perforation forming blade 110, the base 220 of the incision forming blade 200 and the blade portion 230 at the tip of the base 220 are mounted on the bottom surface 173 of the mounting groove portion 170. When the incision forming blade 200 is assembled to the perforation forming blade 110, the incision forming blade 200 as a whole extends in a direction in which the blade portion 130 protrudes from the base 120.

[0099] When the incision forming blade 200 is assembled to the perforation forming blade 110, the blade surface 233 is inclined with respect to the direction in which the blade portion 130 protrudes from the base portion 120, is inclined with respect to the direction in which the multiple blade portions 130 are arranged, and extends from the cutting edge 234 toward the base portion 220 so as to be parallel to the thickness direction of the perforation forming blade 110. The first side surface 221 and the third side surface 223 are perpendicular to the direction in which the multiple blade portions 130 are arranged.

[0100] When the incision forming blade 200 is assembled to the perforation forming blade 110, the cutting edge 234 of the incision forming blade 200 extends in the thickness direction of the perforation forming blade 110. The cutting edge 234 is perpendicular to the direction in which the blade portion 130 protrudes from the base portion 120 and perpendicular to the direction in which the multiple blade portions 130 are arranged. The cutting edge 234 of the incision forming blade 200 is perpendicular to the first cutting edge 141 and the second cutting edge 142 of the perforation forming blade 110.

[0101] The attachment groove 170 is formed by cutting out a part of the blade portion 130. The attachment groove 170 is formed across two adjacent blade portions 130.

[0102] One blade portion 130X of the two adjacent blade portions 130 (blade portion 130X, blade portion 130Y) that is cut out to form the mounting groove 170 has a second blade surface 132A and a fourth blade surface 134A. The other blade portion 130Y of the two adjacent blade portions 130 (blade portion 130X, blade portion 130Y) that is cut out to form the mounting groove 170 has a first blade surface 131A and a third blade surface 133A. The first blade surface 131A has a smaller area than the first blade surface 131 of the other blade portion 130 that is not cut out. The second blade surface 132A, the third blade surface 133A, and the fourth blade surface 134A have smaller areas than the second blade surface 132, the third blade surface 133, and the fourth blade surface 134, respectively, of the other blade portion 130 that is not cut out.

[0103] The first side surface 171 of the mounting groove portion 170 forms a side wall surface of the blade portion 130Y. When the incision forming blade 200 is attached to the perforation forming blade 110, the third side surface 223 of the incision forming blade 200 is positioned away from the blade portion 130Y of the perforation forming blade 110. The first side surface 171 of the mounting groove portion 170 and the third side surface 223 of the incision forming blade 200 are spaced apart in the direction in which the multiple blade portions 130 are arranged. A gap 174 is formed between the first side surface 171 and the third side surface 223.

[0104] The second side surface 172 of the mounting groove portion 170 forms a side wall surface of the blade portion 130X. When the incision forming blade 200 is attached to the perforation forming blade 110, the first side surface 221 of the incision forming blade 200 is positioned away from the blade portion 130X of the perforation forming blade 110. The second side surface 172 of the mounting groove portion 170 and the first side surface 221 of the incision forming blade 200 are spaced apart in the direction in which the multiple blade portions 130 are arranged. A gap is formed between the second side surface 172 and the first side surface 221.

[0105] When the incision forming blade 200 is attached to the perforation forming blade 110, the cutting edge 130P of the perforation forming blade 110 and the cutting edge 234 of the incision forming blade 200 are at the same position in the direction in which the blade portion 130 protrudes from the base portion 120. When the perforation forming blade body 71 is used to form perforations 25 in the packaging material 2, the cutting edge 130P of the perforation forming blade 110 and the cutting edge 234 of the incision forming blade 200 come into contact with the packaging material 2 at almost the same time.

[0106] <21 sachets, 25 perforations> 17 is a schematic diagram showing a sachet 21 in which perforations 25 of the second embodiment are formed. The fold of the packaging material 2 folded in half, the longitudinal fusion portion 23, and the lateral fusion portion 24 divide the packaging material 2 to form the sachet 21. A storage portion 22 is formed inside the sachet 21, and the medicine is stored in the storage portion 22. The sachet 21 packs the medicine, which is the packaging object, in one package.

[0107] Figure 18 is a schematic diagram showing an enlarged view of region XVIII shown in Figure 17. Referring also to Figure 3, a dividing region 26 where the packaging material 2 is not heat-sealed is provided between two adjacent lateral 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 pressurize the packaging material 2 to form the lateral fused portions 24, the perforation-forming blade 71 is pressed against the packaging material 2, thereby forming a perforation 25 in the dividing region 26. The two lateral fused portions 24 and the dividing region 26 sandwiched therebetween, shown in Figure 18, form a partitioning region 27 that separates two sachets 21 adjacent in the longitudinal direction of the packaging material 2. The perforation 25 is formed in the partitioning region 27.

[0108] The perforations 25 include separating perforations 251. In Figures 17 and 18, the up-down direction in the figures is the short-side direction of the packaging material 2. The separating perforations 251 include a plurality of pores extending in the short-side direction of the packaging material 2. The plurality of pores are lined up continuously in the short-side direction of the packaging material 2. The plurality of pores are formed lined up at intervals in the short-side direction of the packaging material 2. The plurality of pores are lined up on an imaginary straight line extending in the short-side direction of the packaging material 2.

[0109] The perforation 25 further includes an opening slit 255. In Figures 17 and 18, the left-right direction in the figures corresponds to the longitudinal direction of the packaging material 2. The opening slit 255 is formed in the dividing region 26 so as to extend in the longitudinal direction of the packaging material 2. The opening slit 255 extends in a direction perpendicular to the direction in which the pores extend.

[0110] The opening slit 255 is formed away from the pores that form the dividing perforation 251 in the short direction of the packaging material 2. An uncut portion 255C where the packaging material 2 is not cut is formed between the opening slit 255 and the pores. The opening slit 255 is discontinuous with the pores that form the dividing perforation 251.

[0111] The opening notch 255 is closely opposed to the end of one of the multiple pores included in the dividing perforation 251, with an uncut portion 255C interposed between the opening notch 255 and the end of the one pore. The opening notch 255 and the pore closely opposed to the opening notch 255 form a substantially inverted T-shape.

[0112] The lateral fusion portion 24 has a curved portion 24A. The lateral fusion portion 24 is curved in a range that overlaps with the opening notch 255 in the lateral direction of the packaging material 2, thereby forming the curved portion 24A. The curved portion 24A is curved in a direction away from the small hole of the separation perforation 251. The lateral fusion portion 24 is formed so that the width of the curved portion 24A is not smaller than the width of the portion other than the curved portion 24A. The curved portion 24A has a width that is equal to or greater than the width of the portion other than the curved portion 24A. The lateral fusion portion 24 may have a constant width across the curved portion 24A and the portion other than the curved portion 24A. The lateral fusion portion 24 may have a constant width across the curved portion 24A and the portion other than the curved portion 24A.

[0113] Due to the formation of curved portion 24A, partition portion 27 separating two adjacent sachets 21 is formed with a wide range that overlaps with opening slit 255 in the short direction of packaging material 2.

[0114] Separation start portion 25A is formed at the end of separation perforation 251. Separation start portion 25A is formed on the straight line on which separation perforations 251 are aligned. Separation start portion 25A and separation perforations 251 are aligned continuously in the short-side direction of packaging material 2. Separation start portion 25A is formed so as to reach the bottom end of sachet 21.

[0115] When sachet 21 is torn along perforation 25, separation initiation portion 25A is the starting point for the separation. A handler separating sachet 21 holds one of two adjacent sachets 21 between the fingers of his right hand and the other between the fingers of his left hand, and moves the two sachets 21 apart so as to tear perforation 25 from separation initiation portion 25A, thereby separating the two adjacent sachets 21 along perforation 25. In Figures 17 and 18, separation initiation portion 25A is formed at the bottom end of sachet 21, so the direction in which sachet 21 is torn is upward in the figures. As shown in Figure 18, each of the multiple perforations of separation perforation 251 has an upstream end and a downstream end in the direction in which sachet 21 is torn, and opening notch 255 is adjacent to and faces the upstream end of one of the multiple perforations.

[0116] Each separated sachet 21 has an opening slit 255 formed on both the left and right edges. A handler who wishes to open sachet 21 can open sachet 21 by pinching the part above opening slit 255 between the fingers of one hand and the part below 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 the opened sachet 21.

[0117] Since opening notches 255 are formed on both edges of sachet 21, the opening direction is not limited to either the left or right direction. When opening sachet 21, sachet 21 may be cut in either the left or right direction. Sachet 21 is configured so that it can be opened from either the left or right direction.

[0118] Because opening slit 255 is formed in only one location in the up-down direction of sachet 21, a handler opens sachet 21 using that location as a starting point. As described above, packaging device 1 is equipped with printing unit 4, which can be used to mark sachet 21 with a predetermined marking. For example, if a mark indicating the position of opening slit 255 is marked on sachet 21, a handler of sachet 21 can easily open sachet 21 using opening slit 255 as a starting point. By marking sachet 21 with a direction in which sachet 21 should be separated, a handler of sachet 21 can easily separate sachet 21 using separation start portion 25A as the separation start point.

[0119] <Action and effect> 17 and 18, sachet 21 of the second embodiment described above has opening slit 255 that is discontinuous with the perforation that constitutes separating perforation 251, as in the first embodiment. The perforation that constitutes separating perforation 251 and opening slit 255 are not connected, and an uncut portion 255C is interposed between the perforation and opening slit 255. Separating perforation 251 is formed so that opening slit 255 is closely opposed to the upstream end of a pair of ends of the perforation extending in the short direction of packaging material 2 in the direction in which sachet 21 is separated.

[0120] Because opening slit 255 is positioned closer to the upstream end of sachet 21 than to the downstream end in the direction in which sachet 21 is separated, perforation 25 is formed such that sachet 21 is less likely to tear toward opening slit 255 when separating sachet 21, and is easier to separate along separating perforation 251. This makes it possible to prevent sachet 21 from being accidentally opened when separating sachet 21, thereby improving the handleability of sachet 21.

[0121] By pressing the perforation-forming blade 71 shown in Figures 11 to 16 against the packaging material 2, it is possible to form a small hole that starts at the cutting edge 130P and extends along the blade portion 130 in the widthwise direction of the packaging material 2. An opening incision 255 that extends in the lengthwise direction of the packaging material 2 can be formed along the cutting edge 234 of the incision-forming blade 200. Using the perforation-forming blade 71 shown in Figures 11 to 16, the perforations 25 shown in Figures 17 and 18 can be reliably formed in the packaging material 2. By appropriately setting the length that the blade portions 130 and 230 penetrate the packaging material 2, it is possible to reliably form perforations 25 in the desired shape.

[0122] When the incision-forming blade 200 is assembled to the perforation-forming blade 110, the blade portion 130 of the perforation-forming blade 110 and the cutting edge 234 of the incision-forming blade 200 are arranged apart. In this way, the pore formed by the blade portion 130 and the opening incision portion 255 formed by the cutting edge 234 can be reliably made discontinuous.

[0123] In the above embodiment, an example has been described in which the packaging material 2 is heat-sealed to form the sachet 21, but the two-ply packaging material 2 may be adhered in any manner. This adhesion means that the two plies of packaging material stick together and do not separate, and should not be interpreted as having the limited meaning of fixing an object using an adhesive. The longitudinal fused portion 23 and the lateral fused portion 24 in the embodiment correspond to an example of an adhesive portion where the two plies of packaging material 2 are adhered.

[0124] Although the embodiments have been described above, the embodiments disclosed herein are illustrative in all respects and should not be considered to be limiting. The scope of the present invention is defined by the claims, not by the above description, and is intended to include meanings equivalent to the claims and all modifications within the scope of the claims. [Explanation of symbols]

[0125] 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, 24A Curved section, 25 Perforation, 25A Separation start section, 26 Separation area, 27 Partition section, 61 Heating member, 62 Receiving member, 71 Perforation forming blade body, 72 Slit groove, 100 Drug, 110 Perforation forming blade, 120, 220 Base, 130, 130X, 130Y, 230 Blade section, 130P, 231P, 232P Cutting tip, 131, 131A First blade surface, 132, 132A Second blade surface, 133, 133A Third blade surface, 134, 134A Fourth blade surface, 141, 241 First blade edge, 142, 242 Second blade edge, 143 Third blade edge, 144 Fourth blade edge, 150 Groove portion, 151, 171, 221 First side surface, 152, 172, 222 Second side surface, 153, 173 Bottom surface, 160 Valley portion, 170 Mounting groove portion, 174 Gap, 180, 212 Assembly hole, 200 Incision forming blade, 210 Assembly portion, 223 Third side surface, 224 Fourth side surface, 233 Blade surface, 234 Blade edge, 240 Recess, 251 Separation perforation, 255 Opening incision portion, 255A, 255B Incision, 255C Uncut portion.

Claims

1. A divided packet in which the packaging object is packaged one by one, A dividing perforation is formed in a partition that separates two adjacent sachets, and the dividing perforation is a plurality of pores extending in one direction that are continuously arranged in the one direction, The sachet further includes a tear-opening slit extending in a direction perpendicular to the one direction, the tear-opening slit being discontinuous with the pore.

2. The sachet according to claim 1 , wherein the opening slit is positioned in a range overlapping with the pore in the one direction.

3. The sachet according to claim 2 , wherein a pair of the opening notches are formed with the pore sandwiched therebetween.

4. The sachet has an adhesive portion where two layers of packaging material are adhered together, The sachet according to claim 1 , wherein the adhesive portion has a curved portion that is curved in a direction away from the pore in a range that overlaps with the opening slit in the one direction.

5. The sachet according to claim 4 , wherein the partition is formed so that a range overlapping the opening slit in the one direction is wide.

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