JP7115149B2 - PTP sheet for drug packaging - Google Patents

Description

The present invention relates to a PTP sheet for drug packaging.

PTP (Press Through Package) packaging is widely used for packaging solid drugs such as tablets and capsules in the field of pharmaceutical packaging. PTP packaging is mainly a package ( sheet).

Taking out the medicine from the PTP sheet is performed by the following procedure. When the patient presses the drug through the pocket with the fingertip, the pocket is elastically deformed and the drug is pressed against the aluminum foil. The pressure of the drug breaks the aluminum foil covering the opening of the pocket. In addition, the walls defining the internal space of the pocket are deformed so as to protrude into the internal space, so that the drug pushed by the deformed wall protrudes out of the pocket through the opening. The patient picks up the drug projecting from the opening of the pocket and takes it out of the pocket.

Japanese Patent No. 6089075

However, for example, for elderly people, patients suffering from rheumatoid arthritis, people who have difficulty performing fine work using their fingertips, and people who have difficulty applying force to their fingertips, drugs from PTP sheets as described above are not suitable. There is a problem that it is not easy to take out.

The PTP sheet according to Patent Document 1 has a bellows-shaped pocket. When the PTP sheet is folded in half, the pocket shrinks and deforms due to the bellows shape. When the pocket shrinks and deforms until it can no longer contain the drug, the inner wall of the pocket presses the drug. The compressed drug breaks through the aluminum foil.

However, in the PTP sheet according to Patent Document 1, it is essential that the pocket shrinks and deforms until it can no longer contain the medicine. Therefore, it is necessary to form a plurality of ridges in most of the pocket so that the outer shape of the pocket changes greatly. Therefore, there is a problem that the shape of the pocket becomes complicated, the shape of the mold becomes complicated, and it becomes difficult to manufacture a stable PTP sheet.

In addition, in order for the pocket to shrink and deform to the point where it can no longer accommodate the medicine, the PTP sheet must be greatly bent, which increases the range in which the fingertips can be moved. Therefore, the work is not easy for people who have difficulty bending their fingertips. In addition, since the direction of the force for shrinking and deforming the pocket differs greatly from the direction in which the drug is pressed against the aluminum foil, the force required to press the drug against the aluminum foil and break the aluminum foil does not necessarily decrease.

In addition, since a plurality of bellows-like protrusions are formed in most of the pocket, the pocket is easily deformed when the PTP sheet is folded in two. It becomes difficult to deform in the direction approaching the aluminum foil. As a result, the operation method for taking out the drug from the PTP sheet is limited, and it becomes difficult to perform the general taking-out method of deforming the pocket so as to press the drug against the aluminum foil.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a PTP sheet for drug packaging from which a drug can be easily taken out from a pocket.

Another object of the present invention is to simplify the shape of the pocket of the PTP sheet for drug packaging to facilitate manufacturing.

(1) A PTP sheet for drug packaging according to the present invention comprises: a first sheet having a dome-shaped pocket projecting from a first surface, which is one of the front and back surfaces, and a flat plate portion extending around the pocket; a second sheet attached to a second surface opposite to the first surface of the second sheet to block the opening of the pocket. The pocket is formed along a wall that defines the internal space of the pocket, and is positioned so as to sandwich the bent portion and the bent portion that are easily bent in a direction projecting into the internal space of the pocket. It has a first portion and a second portion that are difficult to bend in a direction projecting into the internal space of the pocket from the bent portion.

The first sheet and the second sheet are folded along the folded portion. When the first sheet and the second sheet are folded, the portion of the second sheet covering the opening of the pocket is pulled and broken. By folding the first sheet and the second sheet along the folded portion and breaking the second sheet, the pocket is formed such that the folded portion protrudes into the internal space and the opening near both ends of the folded portion widens. transform. Due to such deformation of the pocket, the bent portion protruding into the internal space pushes the drug contained in the pocket out of the pocket through the opening. In addition, a general take-out method of deforming the pocket so as to press the drug against aluminum foil can be easily performed.

(2) Preferably, the bent portion extends linearly along the wall.

According to the above configuration, the first sheet and the second sheet are easily folded in two along the folded portions.

(3) Preferably, both ends of the bent portion reach the vicinity of the flat plate portion.

According to the above configuration, the bent portion largely protrudes into the internal space of the pocket.

(4) Preferably, one bent portion is formed for each pocket.

According to the above configuration, the shape of the pocket is simple.

(5) Preferably, each of the maximum protruding positions of the first portion and the second portion is further from the flat plate portion than the maximum protruding position of the bent portion.

According to the above configuration, the first sheet and the second sheet are easily folded in two along the folded portions.

(6) Preferably, the opening of the pocket is largest at the position of the bent portion and gradually becomes smaller away from the bent portion.

According to the above configuration, it is easy to deform such that the openings near both ends of the bent portion widen.

(7) Preferably, the pocket has an elliptical outer shape when viewed in a direction orthogonal to the first surface, and the bent portion extends along the minor axis direction of the pocket.

According to the above configuration, the bent portion is easily deformed, and the first portion and the second portion are difficult to deform.

(8) Preferably, the bent portion is a groove.

(9) Preferably, the bent portion is a valley bend projecting in a direction projecting into the internal space of the pocket.

(10) Preferably, the bent portion is a thin portion in which the thickness of the wall is thinner than other portions.

(11) Preferably, the flat plate portion has a flat plate bent portion that is easier to bend with the first sheet on the valley side and the second sheet on the crest side than other portions, and the flat plate bent portion extends along an imaginary straight line including the bent portion.

According to the above configuration, the first sheet and the second sheet are easily folded in two along the folded portions.

(12) Preferably, the first sheet has a rectangular outer shape when viewed in a direction orthogonal to the first surface, and two opposite ends of the rectangle are arranged so that the ends approach the pocket. A bendable fold line is formed and the pocket is located one between the two ends.

The first sheet and the second sheet are likely to be folded in two along the folded portion by the user holding the two ends folded along the folding line.

(13) Preferably, the second sheet has a breaking line in a portion that closes the opening of the first sheet.

According to the above configuration, by folding the first sheet and the second sheet in two, the portion of the second sheet covering the opening of the pocket is likely to break.

According to the drug packaging PTP sheet of the present invention, the drug is taken out from the pocket by folding the first sheet and the second sheet along the folded portions. In addition, a general take-out method of deforming the pocket so as to press the drug against aluminum foil can be easily performed.

In addition, since the PTP sheet for drug packaging according to the present invention has a simple pocket shape, it is easy to manufacture.

FIG. 1 is a plan view of the PTP sheet 10. FIG. FIG. 2 is a front view of the PTP sheet 10. FIG. FIG. 3 is a back view of the PTP sheet 10. FIG. FIG. 4 is a sectional view showing a section near the pocket 16 taken along line IV-IV in FIG. FIG. 5 is a plan view of the PTP sheet 10 folded in half. FIG. 6 is a cross-sectional view of the PTP sheet 10 folded in half. FIG. 7 is a front view showing a PTP sheet 10 according to a modification. FIG. 8 is a cross-sectional view showing a PTP sheet 10 according to another modification. It is a schematic diagram.

Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. It should be noted that the embodiment described below is merely an example of the present invention, and it goes without saying that the embodiment of the present invention can be changed as appropriate without changing the gist of the present invention. In the following description, a vertical direction 5 is defined based on the vertical direction, a front-rear direction 6 is defined as a direction perpendicular to the vertical direction 5, and a left-right direction 7 is defined as a direction perpendicular to the vertical direction 5 and the front-rear direction 6, respectively. defined.

[Schematic configuration of PTP sheet 10]
As shown in FIG. 1, the PTP sheet 10 is a rectangular sheet in plan view. In addition, in the outer shape of the PTP sheet 10, the rectangular corners may be rounded. As shown in FIGS. 1 and 4, the PTP sheet 10 is implemented in a state in which a tablet or capsule (hereinafter collectively referred to as a medicine 11) is sealed inside. In this embodiment, one drug 11 is sealed in one PTP sheet 10 .

The PTP sheet 10 is obtained by bonding a first sheet 14 made of polypropylene and a second sheet 15 made of an aluminum film. Medicine 11 is accommodated in pocket 16 formed in first sheet 14 . The opening 17 (see FIG. 4) of the pocket 16 is closed by the second sheet 15. As shown in FIG.

Each constituent member of the PTP sheet 10 will be described in more detail below. In the following description, expressions such as the upper surface and the lower surface of each sheet may be used, but these are based on the orientation of the PTP sheet 10 in FIG. Also, the upper surface of the first sheet 14 (the surface on which the pocket 16 protrudes) corresponds to the first surface, and the lower surface (the surface to which the second sheet 15 is attached) corresponds to the second surface.

[First sheet 14]
The first sheet 14 shown in FIG. 1 is a sheet obtained by molding polypropylene (PP), which is a thermoplastic resin. The first sheet 14 has a certain translucency. Thereby, the patient can see the drug 11 and the like stored in the pocket 16 through the first sheet 14 .

Note that polyvinyl chloride (PVC), polyethylene terephthalate (PET), or cyclic polyolefin, for example, may be used for the first sheet 14 instead of PP. Alternatively, the first sheet 14 may be configured by coating a resin layer with a different thin film. Alternatively, the first sheet 14 may be configured by laminating two or more resin layers.

The first sheet 14 has a rectangular outer shape (an example of a rectangular shape) when viewed in the vertical direction 5, and ends 14A and 14B, which are two opposite sides of the rectangle and correspond to the short sides, are oriented toward the pocket 16. A bending line 24 curved in an arc shape is formed. The bending lines 24 are, for example, grooves or dashed cuts (perforations). In FIG. 1, the fold lines 24 are indicated by dashed lines. The pocket 16 is located between the ends 14A and 14B in the left-right direction 7. As shown in FIG.

As shown in FIG. 1, the first sheet 14 is provided with one pocket 16 . As shown in FIGS. 2 and 4, the pocket 16 is shaped like a dome so that the first sheet 14 protrudes upward. That is, in the pocket 16, the upper surface of the first sheet 14 protrudes upward and the lower surface is depressed upward. An internal space in which the drug 11 is accommodated is formed in this recessed portion. An opening 17 connecting the internal space and the external space is formed in the lower surface of the first sheet 14 . The size of the pocket 16 can completely accommodate the drug 11 and is appropriately changed according to the size of the drug 11 .

The outer shape of the pocket 16 viewed from the up-down direction 5 is an ellipse in which the dimension in the left-right direction 7 is longer than the dimension in the front-rear direction 6 . That is, the front-rear direction 6 of the pocket 16 is the short axis direction, and the left-right direction 7 is the long axis direction. A detailed description of the pocket 16 will be given later.

[Second sheet 15]
As shown in FIG. 3 , the second sheet 15 is an aluminum film adhered to the lower surface (second surface) of the first sheet 14 in the state where the drug 11 is stored in the pocket 16 . The outer shape of the second sheet 15 in plan view is the same as that of the first sheet 14 . 3, the positions of the openings 17 of the pockets 16 formed in the first sheet 14 are indicated by dashed lines. As shown in FIG. 4 , the second sheet 15 closes the opening of the pocket 16 and seals the drug 11 inside the pocket 16 .

The thickness of the second sheet 15 is such that when the second sheet 15 is folded in two together with the first sheet 14 , the tension applied to the portion covering the opening 17 of the pocket 16 breaks the second sheet 15 . Note that materials other than aluminum may be used as the material of the second sheet 15 . For example, the second sheet 15 may be a metal other than aluminum, or an alloy of aluminum and other metals. Also, other chemical materials may be used for the second sheet 15 as long as they can ensure the airtightness of the pocket 16 .

With medicine 11 stored in pocket 16, first sheet 14 and second sheet 15 are pressed together in a heated state. At that time, the first sheet 14 and the second sheet 15 are welded by solidifying the lower surface of the semi-melted first sheet 14 by the heat.

A breaking line 18 is formed along the front-rear direction 6 in a portion of the second sheet 15 that closes the opening 17 . The breaking line 18 is a minute groove or notch that is lowered so that the second sheet can be easily broken. The breaking line 18 is positioned at the center of the opening 17 in the left-right direction 7 . The breaking line 18 is located on the imaginary straight line 8 which will be described later.

[Bent portion 21]
As shown in FIGS. 1 and 2, the pocket 16 is formed with a bent portion 21 along the wall 20 defining the interior space of the pocket 16 . The bent portion 21 is positioned on an imaginary straight line 8 along the short axis of the ellipse that is the outer shape of the pocket 16 in plan view. That is, the bent portion 21 extends linearly in plan view. Both ends of the bent portion 21 reach the flat plate portion 19 of the first sheet 14 . Both ends of the bent portion 21 may not reach the flat plate portion 19 completely and may reach the vicinity of the flat plate portion 19 . One bent portion 21 is formed for one pocket 16 .

As shown in FIGS. 2 and 4 , the bent portion 21 is a recessed groove in which the outer surface of the wall 20 is recessed toward the inner space of the pocket 16 . Thereby, the bent portion 21 is more likely to bend in the direction of protruding into the internal space of the pocket 16 than the other portions (the left portion 22 and the right portion 23 ) of the wall 20 other than the bent portion 21 .

In the pocket 16, a left portion 22 (an example of the first portion or the second portion) and a right portion 23 (an example of the first portion or the second portion) are positioned on both sides of the bent portion 21 in the left-right direction 7. do. Left portion 22 and right portion 23 are dome-shaped without the same configuration as bent portion 21 . That is, the left portion 22 and the right portion 23 are less likely to bend in the direction of protruding into the internal space of the pocket 16 compared to the bent portion 21 .

As shown in FIG. 2, the most protruding position 22A of the left portion 22 and the most protruding position 23A of the right portion 23 are located further from the most protruding position 21A of the bent portion 21 than the flat plate portion 19 (the first surface of the first sheet 14). ) upwards. The left portion 22 protrudes so as to rise from the left end in FIG. 2 toward the most protruding position 22A, and gently descends from the most protruding position 22A to the most protruding position 21A. The right portion 23 protrudes so as to rise from the right end in FIG. 2 toward the most protruding position 23A, and gently descends from the most protruding position 23A to the most protruding position 21A.

As shown in FIG. 3, the opening 17 of the pocket 16 has the largest dimension L1 (dimension along the front-rear direction 6) at the position reached by both ends of the bent portion 21, that is, at the position on the imaginary straight line 8. , the dimension along the front-rear direction 6 gradually decreases as the distance from the bent portion 21 increases to the left and right in the left-right direction 7 . For example, the dimension L2 along the front-rear direction near the left end of the left portion 22 of the pocket 16 is shorter than the dimension L1 (L1>L2). Strictly speaking, the dimension along the front-rear direction 6 at the position of the opening 17 on the imaginary straight line 8 is the bottom of the groove of the bent portion 21, but here, the opening portion of the groove of the bent portion 21 refers to dimensions in

[Bent part of flat plate]
As shown in FIG. 1 , in the first sheet 14 , a flat plate portion 19 extends around the pocket 16 . The flat plate portion 19 forms the outline of the first sheet 14 in a plan view. A flat plate bent portion 30 extending along the front-rear direction 6 is formed at the center of the flat plate portion 19 in the left-right direction 7 . That is, the flat plate bent portion 30 is positioned on the imaginary straight line 8 in plan view. The flat plate bent portion 30 extends linearly from the periphery of the pocket 16 to the periphery of the first sheet 14 .

The flat plate bent portion 30 is a portion that is easier to bend than other portions of the flat plate portion 19 with the first sheet 14 on the valley side and the second sheet 15 on the mountain side, that is, with the pocket 16 on the inside. The flat plate bent portion 30 is, for example, a groove or a dashed cut (perforation).

[Method of taking out drug 11 from PTP sheet 10]
The user folds the ends 14A and 14B of the first sheet 14 along the folding lines 24 so as to stand upward. Then, the user holds the back surfaces of the bent ends 14A and 14B, that is, the surfaces of the part of the second sheet 15 attached to the ends 14A and 14B, and bends the bent portion 21 and the flat plate bent portion 30. Along the line, the first sheet 14 and the second sheet 15 are folded in half with the pocket 16 facing inside. When the first sheet 14 and the second sheet 15 are folded in half, the portion of the second sheet 15 covering the opening 17 of the pocket 16 is pulled. This pulling causes the second sheet 15 to break along the breaking line 18 .

Furthermore, when the first sheet 14 and the second sheet 15 are folded, as shown in FIG. 6, in the pocket 16, the folded portion 21 protrudes into the internal space, and the openings 17 near both ends of the folded portion 21 are opened. Deform to expand. Due to such deformation of the pocket 16 , the bent portion 21 protruding into the internal space pushes the drug 11 contained in the pocket 16 out of the pocket 16 through the opening 17 . Thereby, medicine 11 is taken out from pocket 16 .

Also, the user can take out the medicine 11 from the PTP sheet 10 by a general taking-out method. Specifically, the user crushes the pocket 16 toward the second sheet 15 without folding the first sheet 14 in half. The pocket 16 is crushed so that the folded portion 21 becomes a valley fold. Then, the drug 11 is pressed against the second sheet 15 through the crushed pocket 16 . The medicine 11 is taken out from the pocket 16 by breaking the second sheet 15 with the medicine 11 pressed along the breaking line 18 .

[Action and effect of the above embodiment]
According to the PTP sheet 10 according to the above embodiment, it is easy to take out the drug 11 from the pocket 16 . Further, according to the PTP sheet 10 according to the above-described embodiment, a general taking-out method of deforming the pocket 16 so as to press the medicine 11 against the second sheet 15 can be easily performed. In addition, in a general take-out method, since the pocket 16 is deformed so that the folded portion 21 becomes a valley fold, the deformation of the pocket 16 is stabilized, and the second sheet 15 is broken so that the pocket 16 projects out of the drug 11. position is stable. Moreover, since the pocket 16 has a simple shape, the PTP sheet 10 can be easily manufactured.

Moreover, since the bent portion 21 extends linearly along the wall 20 , the first sheet 14 and the second sheet 15 are easily folded in half along the bent portion 21 .

Since both ends of the bent portion 21 reach the vicinity of the flat plate portion 19 , the bent portion 21 protrudes greatly into the inner space of the pocket 16 by folding the PTP sheet 10 in two.

In addition, since one bent portion 21 is formed for each pocket 16, the shape of the pocket 16 is simple.

Further, since the maximum projecting positions 22A and 23A of the left portion 22 and the right portion 23 are farther from the flat plate portion 19 than the maximum projecting position 21A of the bent portion 21, the first sheet 14 and the second sheet 15 are folded. It is easily folded in two along the portion 21. - 特許庁

In addition, the opening 17 of the pocket 16 has the largest dimension along the front-rear direction 6 at the position of the bent portion 21, and gradually decreases with increasing distance from the bent portion 21 in the left-right direction 7, so that the PTP sheet 10 can be By being folded in two, the openings 17 near both ends of the bent portion 21 are easily deformed so as to expand.

In addition, the outer shape of the pocket 16 is elliptical in plan view, and the folded portion 21 extends along the minor axis direction of the pocket 16. Therefore, when the PTP sheet 10 is folded in two, the folded portion 21 is It is easy to deform, and the left part 22 and the right part 23 are hard to deform.

Further, since the flat plate portion 19 has the flat plate bent portion 30 extending along the imaginary straight line 8 , the first sheet 14 and the second sheet 15 are easily folded in half along the bent portion 21 .

In addition, since the first sheet 14 is rectangular and arcuately curved bending lines 24 are formed at the ends 14A and 14B, respectively, the user can hold the ends 14A and 14B to fold the first sheet 14 and The second sheet 15 can be easily folded in half.

In addition, since the second sheet 15 has the tear line 18 in the portion that closes the opening 17 of the pocket 16, the portion of the second sheet 15 that closes the opening 17 of the pocket 16 is broken when the PTP sheet 10 is folded in half. It's easy to do.

[Modification]
In the above embodiment, the bent portion 21 is a concave groove, but the bent portion 21 may have other shapes. For example, as shown in FIG. 7 , the bent portion 21 may be a valley fold that protrudes into the inner space of the pocket 16 . Also, as shown in FIG. 8, the bent portion 21 may be a thin portion in which the thickness of the wall 20 is thinner than the other portions.

Also, the arrangement and number of pockets 16 shown in the above embodiment are examples, and may be changed as appropriate by those skilled in the art. For example, two pockets 16 may be formed in the PTP sheet 10, and the two pockets 16 may be arranged in the front-rear direction 6 with the left-right direction 7 as the longitudinal direction. Further, the outer shape of the pocket 16 in plan view is not limited to an elliptical shape, and may be circular, for example.

Further, the outer shape of the PTP sheet 10 in plan view is not limited to a rectangle, and may be a quadrangle such as a square, a parallelogram, or a trapezoid, for example. Further, the front-back direction 6 and the left-right direction 7 of the PTP sheet 10 are relative.

Moreover, the bending line 24 is not limited to being curved in an arc shape. For example, straight folding lines 24 parallel to the outer shape of the PTP sheet 10 in plan view may be formed at the ends 14A and 14B. Also, the folding line 24 does not necessarily have to be formed in the first sheet 14 .

Reference Signs List 10 PTP sheet 14 First sheet 15 Second sheet 16 Pocket 17 Opening 18 Breaking line 19 Flat plate portion 20 Wall 21・Bent part 22... Left part (first part or second part)
23... Right part (first part or second part)
24 Bending line 30 Bending portion of flat plate

Claims (10)

a first sheet having a dome-shaped pocket projecting from a first surface, which is one of the front and back surfaces, and a flat plate portion extending around the pocket;
a second sheet attached to a second surface of the first sheet opposite to the first surface and closing the opening of the pocket;
The pocket above
a bent portion that is formed along a wall that defines the internal space of the pocket and is easily bent in a direction that projects into the internal space of the pocket;
a first portion and a second portion located on both sides of the bent portion , and having a first portion and a second portion that are difficult to bend in a direction projecting from the bent portion into the internal space of the pocket;
The bent portion extends linearly along the wall,
Both ends of the bent portion reach the vicinity of the flat plate portion,
The flat plate portion has a flat plate bent portion that is easier to bend than other portions with the first sheet on the valley side and the second sheet on the mountain side,
The PTP sheet for drug packaging, wherein the bent portion of the flat plate extends along an imaginary straight line including the bent portion . a first sheet having a dome-shaped pocket projecting from a first surface, which is one of the front and back surfaces, and a flat plate portion extending around the pocket;
a second sheet attached to a second surface of the first sheet opposite to the first surface and closing the opening of the pocket;
The pocket above
a bent portion that is formed along a wall that defines the internal space of the pocket and is easily bent in a direction that projects into the internal space of the pocket;
a first portion and a second portion located on both sides of the bent portion, and having a first portion and a second portion that are difficult to bend in a direction projecting from the bent portion into the internal space of the pocket;
The first sheet has a rectangular outer shape when viewed in a direction orthogonal to the first surface, and has two opposite ends of the rectangle with folding lines that allow the ends to be folded in a direction approaching the pocket. is formed and
The PTP sheet for drug packaging, wherein one of the pockets is positioned between the two ends. The PTP sheet for drug packaging according to claim 1 or 2 , wherein one bent portion is formed for one pocket. 4. The PTP sheet for drug packaging according to any one of claims 1 to 3 , wherein the maximum protruding positions of the first portion and the second portion are further from the flat plate portion than the maximum protruding position of the bent portion. 5. The PTP sheet for drug packaging according to any one of claims 1 to 4 , wherein the opening of the pocket is largest at the position of the bent portion and gradually becomes smaller away from the bent portion. The pocket has an elliptical outer shape when viewed in a direction orthogonal to the first surface,
The PTP sheet for drug packaging according to any one of claims 1 to 5 , wherein the bent portion extends along the minor axis direction of the pocket. The PTP sheet for drug packaging according to any one of claims 1 to 6 , wherein the bent portion is a concave groove. The PTP sheet for drug packaging according to any one of claims 1 to 6 , wherein the bent portion is a valley fold projecting in a direction projecting into the internal space of the pocket. The PTP sheet for drug packaging according to any one of claims 1 to 6 , wherein the bent portion is a thin portion in which the thickness of the wall is thinner than that of other portions. 10. The PTP sheet for drug packaging according to any one of claims 1 to 9 , wherein the second sheet has a breaking line in a portion blocking the opening of the first sheet.

Images