JP5514343B2 - Blister package - Google Patents

Description

  The present invention relates to an open structure of a blister package for packaging a button-type battery, a coin-type battery, or a medicine such as a tablet.

  Since a button type battery and a coin type battery are small in size, they are generally enclosed in a packaging material and distributed. Such a conventional packaging material will be described with reference to FIGS. FIG. 8 is an exploded perspective view of a conventional packaging material, and FIG. 9 is a rear view of the conventional packaging material.

  As shown in FIG. 8, the conventional packaging material includes a first sheet 51 and a second sheet 52. The first sheet 51 is provided with an accommodating portion 53 that accommodates an accommodated item 50 such as a coin-type battery. The 1st sheet | seat 51 and the 2nd sheet | seat 52 are adhere | attached or welded in all or one part of the parts except the accommodating part 53. FIG. A lid portion 55 surrounded by a perforation 54 is provided at a position corresponding to the accommodation portion 53 of the second sheet 52.

  The user presses the accommodating portion 53 from the side opposite to the second sheet 52 in a state where the accommodation 50 is included in the accommodating portion 53, so that the second sheet 52 extends along the perforation 54 as shown in FIG. Break. In this way, the user can take out the contents 50. Alternatively, by providing a cross-shaped perforation at a position corresponding to the storage portion 53 of the second sheet 52, the user can take out the stored item 50 by the same method (for example, Patent Document 1).

JP 2001-270557 A

  In order for the user to be able to easily take out the container 50 by pressing the container 53 from the side opposite to the second sheet 52 in a state where the container 50 is contained in the container 53, It is necessary to reduce the breaking strength of the perforation 54. However, if it is too weak, for example, when stacked and transported, there is a possibility that the second sheet 52 is torn along the perforation 54 due to the load from the article stacked thereon, and the contents 50 come out of the packaging material. is there. Or an infant etc. may accidentally press the accommodating part 53 and take out the accommodation 50. FIG. On the contrary, if the breaking strength of the perforation 54 is excessively increased in order to prevent an infant or the like from pressing the storage portion 53 by mistake and taking out the storage object 50, the storage is performed from the side opposite to the second sheet 52. The pressing force required when the portion 53 is pressed to take out the stored item 50 is increased, and an excessive pressing force is also applied to the stored item 50, which may cause a problem such as deformation or destruction of the stored item 50. . As described above, the conventional packaging material has a condition contrary to the breaking strength of the perforation 54.

  At present, it is set so that the second sheet 52 is torn along the perforation 54 by pressing the storage portion 53 with a force of about 20 N in a state where the storage object 50 is put in the storage portion 53. For example, when the second sheet 52 is polyethylene terephthalate having a size of 40 mm × 90 mm, a thickness of 100 μm, and a lid portion 55 having a diameter of 21 mm, the perforation 54 has an arc portion of the lid portion 55 of 1 mm every 45 °. Notches are provided at intervals. However, the strength of the perforation 54 is not sufficient from the above viewpoint.

  An object of the present invention is to solve such problems and to provide a blister package in which the contents can be easily taken out and the contents are not easily output even when the accommodating portion is pressed.

  The blister package according to the present invention includes a first sheet and a second sheet. The first sheet has a housing portion that protrudes on the opposite side of the second sheet and has a recess formed on the back side thereof, and a forehead portion that extends around the housing portion. The second sheet is bonded or welded to the forehead portion. The second sheet is provided with a first perforation and a second perforation, and the direction in which the first perforation extends is different from the direction in which the second perforation extends. The first perforation is provided so that the accommodation portion is opened by tearing the second sheet along the first perforation, and the first perforation includes a plurality of corrugated cuts. These corrugated cuts are provided discontinuously. The second perforation is formed by tearing the second sheet along the second perforation to form a first knob portion for tearing the second sheet along the first perforation. A knob portion is provided so as to protrude from the edge of the second sheet that appears by tearing the second sheet along the second perforation.

  According to the blister package of the present invention, the user can easily open it and it is not accidentally opened.

It is a disassembled perspective view of the blister package which concerns on Embodiment 1 of this invention. It is a front view of the blister package. It is a rear view of the blister package. It is an enlarged view of the principal part of FIG. It is a front view of the other blister package which concerns on Embodiment 1 of this invention. It is a front view which shows the perforation formed in the 2nd sheet | seat of the blister package which concerns on Embodiment 2 of this invention. It is a figure which shows a mode when tearing the 2nd sheet | seat shown in FIG. It is a disassembled perspective view of the conventional packaging material. It is a rear view of the conventional packaging material.

  The blister package according to the present invention has a first sheet and a second sheet. The first sheet has a housing portion that protrudes on the opposite side of the second sheet and has a recess formed on the back side thereof, and a forehead portion that extends around the housing portion. The second sheet is bonded or welded to the forehead portion. The second sheet is provided with a first perforation and a second perforation, and the direction in which the first perforation extends is different from the direction in which the second perforation extends. The first perforation is provided so that the accommodation portion is opened by tearing the second sheet along the first perforation, and the first perforation includes a plurality of corrugated cuts. The corrugated cuts are provided discontinuously. The second perforation is formed by tearing the second sheet along the second perforation to form a first knob portion for tearing the second sheet along the first perforation. A knob portion is provided so as to protrude from the edge of the second sheet that appears by tearing the second sheet along the second perforation.

  In the blister package, the user first picks up a part of the second sheet with a finger or the like and pulls the second sheet along the second perforation to tear the second sheet to form the first knob portion. Next, the user pinches the first knob portion with a finger or the like and pulls the second sheet along the first perforation to tear the second sheet. For this reason, depending on the size (open area) of the housing portion and the size of the first knob portion, it is necessary to provide the first perforation so as to deviate from the direction of pulling the first knob portion. Here, the first perforation includes a plurality of corrugated cuts, and the corrugated cuts are provided discontinuously. Therefore, even when the direction in which the first perforation extends and the direction in which the first knob portion is pulled do not match, the user can surely tear the second sheet along the first perforation.

  By such two simple pulling operations, the second sheet is torn along the first and second perforations. Therefore, the user can easily open the accommodating portion. The force necessary for tearing the second sheet along the perforation is the force necessary for tearing the container by pressing the container from the side opposite to the second sheet in a state where the container contains the contents. Smaller than. Therefore, it is possible to prevent the stored items from easily coming out of the blister package during transportation.

  In a preferred specific configuration of the blister package, the second perforation includes a plurality of Y-type cuts, and the Y-type cuts are provided discontinuously. When the portion of the interval at the next cut is torn from the cut, the second sheet may be broken away from the cut in some cases. However, by arranging the cuts in the Y direction and arranging them in the vertical direction, that is, by arranging them so that the lower end of one Y type is opposed to the approximate center of the upper end of the adjacent Y type, the bifurcated portion of the Y shape is displaced. You will receive a crack. Therefore, the user can reliably tear the second sheet along the second perforation.

  In another preferable specific configuration of the blister package, the second sheet is further provided with a third perforation independent of the second perforation, and is sandwiched between the second perforation and the third perforation. The part is formed on the second sheet as a band part. Thus, by providing a 3rd perforation and forming a belt | band | zone part in a 2nd sheet | seat, it becomes further easier to tear a 2nd sheet | seat along a 2nd perforation.

  In a more specific configuration, a notch is provided on at least one extension of the second perforation and the third perforation at the first end of the strip, and the first end of the strip is the second end. A second knob portion for tearing the second sheet along the perforation and the third perforation. By forming the second knob portion in this way, the second sheet can be more easily torn along the second perforation.

  The belt portion may be bonded or welded to the first sheet at the second end portion opposite to the first end portion. By fixing the second end portion to the first sheet, even if the second sheet is torn along the second perforation, the band portion remains with the first sheet, and the band portion is not removed even after the contents are taken out. It can be discarded together with one sheet.

  The third perforation may include a plurality of Y-type cuts, and the Y-type cuts may be provided discontinuously. When the portion of the interval at the next cut is torn from the cut, the second sheet may be broken away from the cut in some cases. However, by arranging the cuts in the Y direction and arranging them in the vertical direction, that is, by arranging them so that the lower end of one Y type is opposed to the approximate center of the upper end of the adjacent Y type, the bifurcated portion of the Y shape is displaced. You will receive a crack. Therefore, the user can reliably tear the second sheet along the second perforation.

  In another preferable specific configuration of the blister package, the second sheet is further provided with a fourth perforation independent of the first perforation, and is sandwiched between the first perforation and the fourth perforation. The cover part covers the accommodating part. By providing the fourth perforation in this way, it becomes easier to tear the second sheet along the first perforation.

  In a more specific configuration, the fourth perforation includes a plurality of corrugated cuts, and the corrugated cuts are provided discontinuously. Depending on the size (open area) of the accommodating portion and the size of the first knob, it is necessary to provide the fourth perforation so as to deviate from the direction of pulling the first knob. Thus, even when the direction in which the fourth perforation extends and the direction in which the first knob portion is pulled do not coincide with each other, according to the fourth perforation, the user can securely place the second sheet on the fourth perforation. Can be torn along.

  In the blister package, the portion of the second sheet provided with the first perforation has a strength that can withstand the pressing force that presses the housing portion from the side opposite to the second sheet in a state where the housing body contains the contained material. It is preferable to have a strength that can withstand a pressing force of 40 N or less. By setting the strength of the first perforation in this way, it is possible to prevent an infant or the like from accidentally pressing the storage portion to take out the stored material and accidentally swallowing the stored material.

  In the blister package, the first sheet and the second sheet are preferably made of a biodegradable material from the viewpoint of global environmental conservation. This is because biodegradable materials are degraded over time in the natural environment. Among the biodegradable materials, a polylactic acid polymer that is an aliphatic polyester is also preferable in terms of moldability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the contents described below as long as it is based on the basic characteristics described in this specification.

(Embodiment 1)
FIG. 1 is an exploded perspective view of a blister package according to Embodiment 1 of the present invention. 2 and 3 are a front view and a rear view of the blister package, respectively.

  The blister package has a first sheet 1 and a second sheet 2. The first sheet 1 has an accommodating part 11 that accommodates an article 10 that protrudes on the opposite side of the second sheet 2 and has a concave part on the back side, and a forehead part 12 that extends around the accommodating part 11. A rectangular double line 13 surrounding the accommodating portion 11, a double line 14 arranged so as to surround the suspension hole 16, and a double line 15 arranged at a predetermined interval between the ends are provided. Represents a stepped portion. The forehead portion 12 is formed outside the stepped portion 15, that is, on the end side, and the first sheet 1 and the second sheet 2 are bonded or welded to the forehead portion 12. The first sheet 1 and the second sheet 2 are also bonded or welded at the portion from the step portion 14 to the edge of the hole 16. Inside the step portion 15, the outside portions of the step portions 13 and 14 are slightly higher (for example, about 1 mm) than the portion to be bonded or welded, and there is a gap between the second sheet 2. It is formed. Here, the container 10 is, for example, a button-type battery, a coin-type battery, or a medicine such as a tablet.

  As shown in FIGS. 2 and 3, the second sheet 2 has a first perforation surrounded by a broken line 22 (hereinafter referred to as a perforation 22) and a second perforation surrounded by a broken line 23 (hereinafter referred to as a perforation 22). A perforation 23). The direction in which the perforation 22 extends is different from the direction in which the perforation 23 extends. In FIG. 4, the direction indicated by the arrow 36 is the direction in which the perforation 22 extends, and the direction indicated by the arrow 37 is the direction in which the perforation 23 extends. Note that the directions indicated by the arrows 36 and 37 and the direction in which the perforations 22 and 23 extend are not strictly parallel to each other, but indicate substantially parallel directions.

  Further, a third perforation surrounded by a broken line 25 (hereinafter referred to as a perforation 25) is further provided that is independent of the perforation 23 and is substantially parallel to the perforation 23. Further, a fourth perforation (hereinafter referred to as a perforation 29) surrounded by a broken line 29, which is similar to the perforation 22 and is independent of the perforation 22, is provided.

  The perforations 22 and 29 are provided so that the housing portion 11 is opened when the user tears the second sheet 2 along the perforations 22 and 29, respectively. That is, the portion sandwiched between the perforation 22 and the perforation 29 covers the accommodating portion 11.

  When the second sheet 2 is torn along the perforations 23 and 25, the first knob portion 24 is formed. The user can tear the second sheet 2 along the perforations 22 and 29 by pinching the first knob portion 24 with a finger or the like. In this way, a portion sandwiched between the perforation 23 and the perforation 25 provided so as to form the first knob portion 24 forms a band portion 26.

  In such a configuration, the user first picks a part of the second sheet 2 with a finger or the like and pulls the second sheet 2 along the perforations 23 and 25 to tear the second sheet 2. In this way, the first knob portion 24 is formed. Next, the user pinches the first knob portion 24 with a finger or the like and pulls the second sheet 2 along the perforations 22 and 29 to tear the second sheet 2. By such two simple pulling operations, the second sheet 2 is torn along the perforations 22, 23, 25, and 29. Therefore, the user can open the accommodating part 11 easily. The force necessary for tearing the second sheet 2 along the perforations 22, 23, 25, and 29 is from the side opposite to the second sheet 2 in the state where the accommodation 10 is included in the accommodation portion 11. It is smaller than the force required for tearing the container 11 by pressing it. Therefore, it is possible to prevent the stored item 10 from coming out of the blister package carelessly.

  Next, the perforations 22, 23, 25, and 29 will be described in detail with reference to FIG. FIG. 4 is an enlarged view of FIG. The perforation 22 is formed by discontinuously providing a corrugated cut 34 that is a composite of arc-shaped cuts 31, 32, and 33. Since the structure of the perforation 29 is the same as that of the perforation 22, description thereof is omitted here.

  In the configuration shown in FIG. 4, the direction in which the perforations 22 and 29 extend does not coincide with the direction in which the first knob portion 24 is pulled. A portion sandwiched between the perforations 22 and 29 covers the accommodating portion 11. Therefore, the area of this portion needs to be increased depending on the size (open area) of the accommodating portion 11. On the other hand, when the first knob portion 24 is set to be large, only the central portion is pinched when the user pinches, and the pulling force is hardly transmitted to the perforations 22 and 29. Therefore, it is preferable to design the first knob portion 24 in consideration of the size of the finger.

  Thus, depending on the size of the accommodating portion 11 and the size of the first knob portion 24, it is necessary to provide the perforations 22 and 29 so as to deviate from the direction in which the first knob portion 24 is pulled. However, if the direction in which the perforations 22 and 29 extend does not match the direction in which the first knob portion 24 is pulled, for example, depending on the material of the second sheet 2, the perforations 22 and 29 do not tear well, and the tear is perforated. Deviates from 22 and 29. In particular, such a phenomenon becomes remarkable when the second sheet 2 includes a fibrous material and the fibrous material has directionality.

  In the configuration of FIG. 4, the perforations 22 and 29 are formed by discontinuous wave-shaped cuts 34. In particular, the cut 31 reaching the end of the tearing operation is directed toward the center of the portion between the perforations 22 and 29. Therefore, the perforations 22 and 29 are surely torn by correcting the tears to be outward between the notches 34.

  Thus, even when the direction in which the perforations 22 and 29 extend does not coincide with the direction in which the first knob portion 24 is pulled, it is preferable to form the perforations 22 and 29 with the notches 34 having the above-described shape. Accordingly, the user can reliably tear the second sheet 2 along the perforations 22 and 29.

  Next, the perforations 23 and 25 will be described. As shown in FIG. 4, the perforations 23 and 25 are formed including discontinuous Y-shaped cuts 30. When tearing the part of the interval from the notch 30 to the next notch 30, the second sheet 2 may be displaced from the notch 30 and tear. Compared to the case where the second sheet 2 is torn along the perforations 22 and 29, in this case, the belt portion 26 is substantially rectangular, and the direction in which the perforations 23 and 25 extend and the direction in which the belt portion 26 is pulled are almost the same. This trend is small because they agree.

  However, when the 2nd sheet 2 contains fiber as mentioned above and the fiber has directionality, there is a concern about the situation where the 2nd sheet 2 deviates from the cut 30 and is torn. However, by arranging the incisions 30 in the Y direction in the vertical direction, that is, by arranging them so that the lower end of one Y type faces almost the center of the upper end of the adjacent Y type, You will receive a missed rift. Accordingly, the user can reliably tear the second sheet 2 along the perforations 23 and 25.

  In addition, in the 1st end part 27 of the belt | band | zone part 26, it is preferable to provide the notch 35A or 35B on at least one extension of the perforations 23 and 25. FIG. By providing at least one of the notches 35 </ b> A and 35 </ b> B in this way, the first end portion 27 of the band portion 26 becomes a second knob portion for tearing the second sheet 2 along the perforations 23 and 25. By forming the second knob portion in this manner, the second sheet 2 can be further easily torn along the perforations 23 and 25.

Moreover, it is preferable that the band portion 26 is bonded or welded to the first sheet 1 at the second end portion 28. Since the second end portion 28 is fixed to the first sheet 1, the band portion 26 remains together with the first sheet 1 even when the second sheet 2 is torn along the perforations 23 and 25. For this reason, the strip 26 can be discarded together with the first sheet 1 after the container 10 is taken out.
In addition, although the 1st edge part 27 is made to substantially correspond with the side surface of the 1st sheet | seat 1, it does not necessarily need to do so. The first end portion 27 may be positioned inside the side surface of the first sheet 1. In that case, it forms in the notch | incision which followed notch 35A and / or 35B.

  The perforations 23 and 25 are formed by the Y-shaped cuts 30 as described above. Therefore, the fracture | rupture part of the 2nd sheet | seat 2 along the perforations 23 and 25 becomes a saw shape. However, the tearing directions of the perforations 23 and 29 are linear and single, respectively. Therefore, even if the Y-shaped notch 30 is set small and fine, the second sheet 2 extends along the perforations 23 and 25. Can be torn reliably. Therefore, a large burr does not occur at the broken portion of the second sheet 2 along the perforations 23 and 25.

  On the other hand, the direction in which the perforations 22 and 29 extend is set obliquely from the direction in which the first knob portion 24 is pulled. Therefore, when the perforations 22 and 29 are formed with the Y-shaped cuts 30 in the same manner as the perforations 23 and 25, the Y-shaped cuts 30 are used to ensure that the second sheet 2 is torn. It needs to be bigger. Thus, when the Y-shaped cut 30 is large, the burr | flash of the fracture | rupture part of the 2nd sheet | seat 2 along the perforations 22 and 29 will become large. In such a state, the user may touch his burr and injure his finger.

  In the present embodiment, by forming the perforations 22 and 29 with the corrugated notches 34, the broken portions of the second sheet 2 along the perforations 22 and 29 are rounded. Therefore, it is possible to prevent the user from being injured. Therefore, there is no problem as described above.

  The perforation 25 and the perforation 29 are not essential and may not be provided. In this case, if the degree of adhesion (or welding) between the forehead portion 12 and the second sheet 2 is weakened at the lower end or left side of the blister package shown in FIG. 3, these are substituted for the perforation 25 or perforation 29. be able to. However, it is preferable to provide the perforation 25 and the perforation 29 because the second sheet 2 is more easily torn along the perforations 22 and 23 in each operation.

  As shown in FIG. 5, the first sheet 1 is provided with accommodating portions 11A and 11B, and the second sheet 2 has a pair of perforations 22A, 23A, and 29A, and perforations 22B, 23B. , And 29B may be provided. In this configuration, the first knob portions 24A and 24B can be formed simultaneously by tearing the second sheet 2 along the perforations 23A and 23B. Therefore, the user can take out two things by three tearing operations.

(Embodiment 2)
Next, the shape of different perforations formed on the second sheet 2 will be described. FIG. 6 is a front view showing a perforation formed in the second sheet 2 of the blister package according to Embodiment 2 of the present invention. FIG. 7 is a view showing a state when the second sheet 2 shown in FIG. 6 is torn. When the second sheet 2 does not include a directional fiber, the first, second, third, and fourth perforations 42, 43, which are configured by linear notches as shown in FIG. 45 and 49 may be provided. In particular, when the area of the portion where the accommodating portion 11 is sandwiched between the perforations 42 and 49 is small, there is no problem even if the direction in which the first knob portion 44 is pulled matches the direction in which the perforations 42 and 49 extend. Thus, the shape of the perforation can be arbitrarily changed according to the material of the second sheet 2 and the size of the accommodating portion 11.

  In addition, although the material of the 1st sheet | seat 1 and the 2nd sheet | seat 2 is not specifically limited, It is preferable to be comprised with the biodegradable material from the point of global environment conservation. Biodegradable materials degrade over time in the natural environment. Examples of such materials include fatty acid polyesters, knitted polyvinyl alcohol, cellulose ester compounds, and starch modified products. Among these, a polylactic acid polymer which is an aliphatic polyester is preferable in terms of moldability. In addition, alcohols and carboxylic acids generated at the time of decomposition are preferable because they have little influence on the living body.

  However, when the 2nd sheet | seat 2 is produced using a polylactic acid-type polymer, it becomes common to become the fiber which has directionality. Therefore, it is preferable to provide the perforations 22, 23, 25, and 29 shown in FIG.

  In addition, the part which provided the perforation 22 of the 2nd sheet | seat 2 has the intensity | strength which can endure the pressing force which presses the accommodating part 11 from the opposite side to the 2nd sheet | seat 2 in the state in which the accommodation 10 was included in the accommodating part 11. It is preferable. This can be achieved by adjusting the perforation cut length and interval. By setting the strength of the perforation 22 as described above, it is possible to prevent an infant or the like from pressing the accommodating portion 11 by mistake and taking out the accommodated item 10 and ingesting the accommodated item 10 by mistake.

An example of the second sheet 2 that satisfies the above conditions and perforations 22, 23, 25, and 29 is shown. The second sheet 2 is made of a polylactic acid polymer having a thickness of 100 μm and the first sheet 1 is made of a thickness of 170 μm. Moreover, each approximate external dimension is 40 mm x 90 mm. In the perforations 22 and 29, the radius of curvature of the arcs of the notches 31 and 33 is 1 mm, and the radius of curvature of the arc of the notches 32 is 1.25 mm. The interval between the notches 34 is set to about 1.5 mm. Further, the width of the first knob portion 24 is set to 13 mm, and the interval between the perforations 22 and 29 on the side away from the first knob portion 24 is set to about 25 mm, while the Y-shape of the notches 30 of the perforations 23 and 25 The angle between the forked portions is 60 °, the length of each straight portion is 0.7 mm, and the interval between the cuts 30 is 0.5 mm.
Moreover, the height of the accommodating part 11 shall be 4.2 mm and a diameter shall be 23.4 mm. The forehead portion 12 and the first sheet 1 are thermally welded by pressing while heating at 120 to 140 ° C. for about 4 seconds.

  In a state where a coin-type battery having a diameter of 20 mm and a thickness of 3.2 mm is accommodated in the accommodating portion 11 of the blister package configured as described above, the second sheet 2 is torn until the force pressing the accommodating portion 11 is increased to about 40N. Endure without. This pressure exceeds the force with which a person presses the accommodating part 11 with a finger. In addition, the user can easily and surely tear the second sheet 2 with a finger in the order of the perforations 23 and 25 and the perforations 22 and 29 and take out the coin-type battery.

  Moreover, you may combine the 1st sheet | seat 1 whose height of the accommodating part 11 is 8.3 mm and diameter is 32.4 mm in the 2nd sheet | seat 2 which formed the perforation similar to the above. In this case as well, the second sheet 2 withstands without being split until the force for pressing the accommodating portion 11 is increased to about 40 N in a state where the accommodating portion 11 accommodates a coin-type battery having a diameter of 23 mm and a thickness of 5.4 mm.

  The blister package according to the present invention can prevent the contained item from being easily taken out during transportation and the like, and the user can easily and reliably tear it out with a finger and take out the contained item. This blister package is useful as a blister package for packaging medicines such as button-type batteries, coin-type batteries or tablets.

DESCRIPTION OF SYMBOLS 1 1st sheet | seat 2 2nd sheet | seat 10 Contained matter 11, 11A, 11B Accommodation part 12 Forehead part 22, 22A, 22B, 42
23, 23A, 23B, 43 perforation (second perforation)
24, 24A, 24B, 44 First knob 25, 45 perforation (third perforation)
26 Band 27 First End 28 Second End 29, 29A, 29B, 49 Perforation (Fourth Perforation)
30, 31, 32, 33, 34 Notch 35A, 35B Notch 36, 37 Arrow

Claims (12)

A first sheet and a second sheet;
The first sheet has a housing part that protrudes on the opposite side of the second sheet and has a recess formed on the back side thereof, and a forehead that extends around the housing part,
The second sheet is bonded or welded to the forehead part,
The second sheet is provided with a first perforation and a second perforation, and the extending direction of the first perforation is different from the extending direction of the second perforation,
The first perforation is provided so that the housing portion is opened by tearing the second sheet along the first perforation, and the first perforation is corrugated. A plurality of cuts are included, the corrugated cuts are provided discontinuously,
The second perforation is formed by tearing the second sheet along the second perforation to form a first knob portion for tearing the second sheet along the first perforation. The blister package is provided so that the first knob portion protrudes from an edge of the second sheet that appears by tearing the second sheet along the second perforation.   The blister package according to claim 1, wherein the second perforation includes a plurality of Y-shaped cuts, and the Y-shaped cuts are provided discontinuously.   The second sheet is further provided with a third perforation independent of the second perforation, and a band portion sandwiched between the second perforation and the third perforation is the second sheet. The blister package according to claim 1 or 2, wherein the blister package is formed as described above.   A notch is provided on at least one extension of the second perforation and the third perforation at the first end of the band, and the first end of the band is the second perforation. The blister package according to claim 3, wherein the blister package is a second knob portion for tearing the second sheet along an eye and the third perforation.   The blister package according to claim 3 or 4, wherein the band portion is bonded or welded to the first sheet at a second end portion opposite to the first end portion.   The blister according to any one of claims 3 to 5, wherein the third perforation includes a plurality of Y-shaped cuts, and the Y-shaped cuts are provided discontinuously. package.   The second sheet is further provided with a fourth perforation independent of the first perforation, and a portion sandwiched between the first perforation and the fourth perforation covers the accommodating portion. The blister package according to any one of claims 1 to 6.   The blister package according to claim 7, wherein the fourth perforation includes a plurality of corrugated cuts, and the corrugated cuts are provided discontinuously.   The portion provided with the first perforation of the second sheet has a strength that can withstand a pressing force that presses the housing portion from the side opposite to the second sheet in a state where the housing object is contained in the housing portion. The blister package according to any one of claims 1 to 8.   The blister package according to claim 9, wherein a portion of the second sheet provided with the first perforation has a strength capable of withstanding the pressing force of 40 N or less.   The blister package according to any one of claims 1 to 10, wherein the first sheet and the second sheet are made of a biodegradable material.   The blister package according to claim 11, wherein the biodegradable material is a polylactic acid polymer.

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