JP2012144288A - Impact resistive ptp package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To favorably absorb falling impact to reduce breakage of a contained solid matter, to perform it at a low cost and to maintain the entire package compact.SOLUTION: In a PTP (Press Through Pack) package, a containing recessed part (4) is recessed in one surface of a resin sheet (2), the solid matter (6) is contained in a containing space (5) in the containing recessed part (4), and thereafter a sheet-shaped lid material (3) is put on an opening (7) in the containing recessed part (4). A cushioning part (10) with an inverted-bowl-shaped protruded part (11) is formed on a wall (8) opposite to the opening (7) across the containing space (5), out of the walls of the containing recessed part (4). The width (w1) of the cushioning part (10) is at least 30% of the opening width (W) of the opening (7).

Description

  The present invention relates to a PTP package that contains solids such as tablets and a resin sheet used therefor, and more specifically, it can absorb shock caused by dropping well, can reduce damage to the contained solids, and is inexpensive. The present invention relates to an impact-resistant PTP package and a resin sheet used therefor that can be implemented and can maintain the entire package compact.

  In the packaging field of pharmaceuticals and foods, PTP (Press Through Pack) packages are widely used for packaging tablets, capsules, granular foods, and the like. This PTP package is formed by forming a large number of receiving recesses in a resin sheet such as a hard vinyl chloride (PVC) sheet or an unstretched polypropylene (CPP) sheet, and storing a solid material such as a tablet in the receiving recess. The opening of the recess is covered with a lid made of aluminum foil or paper coated with a heat sealant. And if the bottom part of said accommodating recessed part is pushed to the cover material side, said solid substance will be pushed through this cover material, and will be taken out.

In the above PTP package, since solids are individually accommodated, there is no risk of solids colliding with each other at the time of transportation, and only a desired accommodating recess is opened to easily obtain the required number of solids. There is an advantage that can be taken out.
However, when this PTP package is dropped, the solid matter may be damaged by receiving a large impact through the resin sheet or the lid. Especially in the case of uncoated tablets that are not coated with sugar coating etc., the strength of the solid matter is low, so it is easy to break due to the impact described above, and when the uncoated tablets are dry tablets, If the hardness is low, the risk of breakage is even higher.

  In order to solve the above-described problems, conventionally, a lid material in which a heat-sealing resin layer is provided in an uneven shape on the surface of the accommodation recess has been proposed (see Patent Document 1, hereinafter, Prior Art 1). That said.) In addition, there has also been proposed a method in which an ear portion having no receiving recess is formed at the end in the longitudinal direction of the PTP package (see Patent Document 2, hereinafter referred to as Conventional Technology 2).

  However, in the above-described prior art 1, a heat-sealing resin layer formed so as to have irregularities with a specific height has to be formed on one side of the lid material, and there is a problem that the operation is complicated and the cost is high. Moreover, since the above heat-sealing resin layer is formed on the lid material, when the PTP package is dropped from the resin sheet side, the heat-sealing resin layer receives the impact received by the above solid matter. There is also a problem that cannot be sufficiently buffered.

On the other hand, in the above-described prior art 2, since the ear portion is formed long at the longitudinal end portion of the PTP package, the outer dimensions of the PTP package are increased, and the box or the like that accommodates this is also large. In addition to the high material cost, not only can it be implemented at low cost, but also the problem is that a large space is required for transportation and storage because the product volume increases.
In addition, when this PTP package is dropped, if it falls in a posture with the lid facing downward, it can be buffered by landing from the ear, but if it falls in a posture with the resin sheet lowered, the housing recess protrudes. Therefore, the housing recess may land before the ear. In this case, there is a problem that the above-mentioned ear portion cannot buffer the impact transmitted to the solid matter in the housing recess. In particular, if there is a undulation on the ground, it may land at the middle part of the PTP package, and the above-mentioned ear part cannot buffer the impact at the time of landing, and the contained solid matter is damaged. There is a fear.

Japanese Patent Laid-Open No. 04-189766 JP 2005-255220 A

  The technical problem of the present invention is to solve the above-mentioned problems, to absorb the impact caused by dropping well, to reduce the damage of the contained solid matter, to be carried out at a low cost, and to keep the whole package compact. An object of the present invention is to provide an impact-resistant PTP package and a resin sheet used therefor.

In order to solve the above problems, the present invention will be described as follows, for example, based on FIGS. 1 to 7 showing an embodiment of the present invention.
That is, the present invention 1 relates to an impact-resistant PTP package, in which a housing recess (4) is provided on one side of a resin sheet (2), and a solid material (6) is placed in the housing space (5) in the housing recess (4). ), And then the opening (7) of the housing recess (4) is covered with a sheet-like lid material (3), of the wall of the housing recess (4), A buffer portion (10) having at least one of a convex portion and a concave portion is formed on the wall portion (8) opposite to the opening portion (7) across the accommodation space (5). Features.

In addition, the present invention 2 relates to a resin sheet for an impact-resistant PTP package, and the impact-resistant PTP package according to the present invention 1 described above, wherein an accommodation recess (4) for accommodating a solid (6) is provided on one side. A resin sheet used in (1),
The buffer portion (10) including at least one of a convex portion and a concave portion is formed on the wall portion (8) of the accommodating concave portion (4).

  Since the buffer portion is formed on the wall portion on the opposite side to the opening portion with the accommodation space sandwiched in the PTP package body, when the PTP package body is dropped with the resin sheet side downward, The accommodation recess is landed from the wall portion on which the buffer portion is formed. At this time, the solid matter in the housing recess is in a state of being supported by the inner surface of the housing recess, and the support portion and the grounding portion of the PTP package are placed in the housing recess via the buffer portion. Are separated by a dimension larger than the wall thickness of the wall. And since this buffer part deform | transforms, the impact at the time of said landing is buffered favorably. In addition, since the buffer portion is formed on the wall portion of the housing recess, the buffer portion can be easily implemented by simply changing the molding die of the housing recess, and unlike the prior art 2, the length of the PTP package is long. There is no need to increase the size.

Here, the solid material of the container means a product formed in a block shape or a lump shape having a certain shape, such as a tablet.
Moreover, said buffer part should just be formed in the wall part of an accommodation recessed part, and can buffer the impact at the time of falling and landing, etc., and is not limited to the thing of a specific shape and structure. For example, the above-mentioned buffer part can be made into the shape provided with the convex part which protruded outward from the accommodation space, and the crevice provided in the storage space.

The convex part and concave part of the above-mentioned buffer part can be easily formed because it is a simple shape if it is formed in a prone shape with a raised central part such as a partial spherical shape, and can be implemented at low cost, and The shock can be satisfactorily buffered, which is preferable.
Moreover, said buffer part can be formed in a cyclic | annular convex part or a ditch | groove. In this case, since the buffer part can be formed in a wide area, the protruding height of the convex part and the concave part can be kept low, and even if the entire PTP package is kept more compact, it can be satisfactorily buffered, which is preferable.
In particular, when the buffer portion is formed in an annular shape, it is more preferable that a plurality of concentric circles are formed because the shock can be more effectively buffered by these buffer portions.

  The above-mentioned buffer portion is not limited to a specific size, and is set to a size capable of satisfactorily buffering the above impact according to the size of the housing recess, the thickness of the resin sheet, the size and hardness of the solid material to be housed, etc. Is done. For example, in any cross section that passes through the center of the buffer portion in plan view, it is preferable that the width of the buffer portion is 30% or more of the opening width of the opening portion because the above shock can be buffered well.

  Specifically, for example, as shown in FIGS. 1 and 2, when the receiving recess and the buffer portion are both formed in a circular shape in plan view, and the buffer portion has a prone shape, The outer diameter is preferably set to a dimension of 30% or more, more preferably 30 to 70%, of the inner diameter of the opening of the housing recess. In this case, the height of the prone buffer portion is preferably set to 10 to 40%, more preferably about 15 to 40%, with respect to the depth of the housing recess.

  In addition, it is preferable to form the peripheral portion in a circular shape in a plan view because the buffer portion can be easily formed. However, for example, when the accommodating recess is an ellipse or an oval in a plan view, the peripheral portion of the buffer portion Can be formed in a similar shape, or can be formed in any shape different from these.

  Since the impact-resistant PTP packaging body and the resin sheet for impact-resistant PTP packaging body of the present invention are configured and act as described above, the following effects can be obtained.

  (1) Since the buffer portion is formed in the wall portion on the opposite side of the opening portion with respect to the storage space in the above-mentioned storage recess portion, when this PTP package is dropped with the resin sheet side downward, etc. When an impact is applied from the resin sheet side, the impact can be satisfactorily buffered by the above-described buffer portion, and the breakage of the solid matter housed in the housing recess can be effectively reduced.

  (2) Since the buffer portion is formed on the wall portion of the housing recess, it is not necessary to increase the width or length of the PTP package simply by changing the molding die of the housing recess, and the cost is low. In addition, the entire package can be kept compact, and a large space is not required unnecessarily during transportation or storage.

It is a partially broken bottom view of the impact-resistant PTP package of the first embodiment of the present invention. It is an expansion longitudinal cross-sectional view of the accommodation recessed part vicinity of 1st Embodiment. It is an expanded bottom view of the principal part of 2nd Embodiment of this invention. It is an expansion longitudinal cross-sectional view of the accommodation recessed part vicinity of 2nd Embodiment. It is a comparison table | surface which shows the result of having measured the impact resistance of the Example of this invention compared with the comparative example. It is an expansion longitudinal cross-sectional view of the accommodation recessed part vicinity of 3rd Embodiment. FIG. 7A is an enlarged bottom view of the vicinity of the housing recess according to the fourth embodiment, and FIG. 7B is an enlarged bottom view of the vicinity of the housing recess of the fifth embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the following embodiments, for ease of explanation, the resin sheet is described in a posture arranged below the lid, but the PTP package of the present invention is in this posture or other specific posture. It is not limited.

1 and 2 show an impact-resistant PTP package (1) according to a first embodiment of the present invention.
As shown in FIGS. 1 and 2, the impact-resistant PTP package (1) includes a resin sheet (2) such as an unstretched polypropylene (CPP) sheet, and a lid (3) such as an aluminum foil. ing. A plurality of receiving recesses (4) are formed on one side of the resin sheet (2), and after the tablet (6), which is a solid material, is stored in the receiving space (5) in the receiving recess (4). The opening (7) of the housing recess (4) is covered with the lid (3) in a tightly sealed manner.

  The accommodating recess (4) is formed in, for example, a substantially truncated cone shape according to the shape of the tablet (6). As shown in FIG. 2, in the housing recess (4), the housing space is formed in a wall portion opposite to the opening (7) across the housing space (5), that is, in the bottom portion (8). A shock-absorbing portion (10) projecting downward, which is the outside of (5), is formed integrally with the bottom portion (8). This buffer part (10) is formed in a protrusive convex part (11) consisting of a partial spherical surface, and is formed concentrically with the accommodating concave part (4) in plan view as shown in FIG. .

Each dimension of said accommodation recessed part (4) and buffer part (10) is set according to said tablet (6).
For example, when the diameter (D) of the tablet is 8 mm, the inner diameter (W) of the opening (7) is set to 10.5 mm, and the outer surface in the plan view of the prone convex portion (11) is set. The diameter (w1) is set to 5.0 mm. Therefore, the width of the buffer portion (10) is set to 47.6% of the opening width of the opening (7) in the section passing through the center of the buffer portion (10) in plan view, that is, in the longitudinal section. Yes.
On the other hand, the distance between the opening (7) and the bottom (8), that is, the depth (H) of the accommodating recess (4) is 4.7 mm when the buffer (10) is not formed. On the other hand, the protrusion height (h1) of the prone protrusion (11) is set to 1.3 mm. Therefore, the protruding height of the buffer portion (10) is set to 27.7% of the depth (H) of the receiving recess.

The outer diameter (w1) of the prone convex portion (11) which is the buffer portion (10) is smaller than the diameter (D) of the tablet (6), and therefore the tablet accommodated in the accommodating recess (4). (6) is supported by a support portion (17) formed on the inner surface of the accommodation space (5) side around the buffer portion (10). When this PTP package (1) falls with the resin sheet (2) side down, it lands on the ground contact portion (18) formed at the lower end of the buffer (10). The grounding part (18) and the supporting part (17) are larger than the thickness of the bottom part (8) and are separated in the vertical direction, and the PTP package (1) is dropped. When the receiving recess (4) receives an impact from below, the buffer portion (10) is deformed to buffer the impact and prevent the tablet (6) from being damaged.
When taking out said tablet (6) from a PTP package (1), said accommodating recessed part (4) is pressed and deformed to said lid | cover material (3) side, and said tablet (6) is said To the lid (3) side. Thereby, the cover material (3) is pushed through and the tablet (6) is taken out.

3 and 4 show an impact-resistant PTP package (1) according to a second embodiment of the present invention.
As shown in FIGS. 3 and 4, in the second embodiment, two annular protrusions projecting outward from the accommodation space (5) as a buffer portion (10) are provided at the bottom (8) of the accommodation recess (4). Convex parts (12, 13) are formed concentrically.

The inner annular projection (12) has an outer diameter (w2) set to 5.25 mm. As in the first embodiment, the inner diameter (W) of the opening (7) of the housing recess (4) is set to 10.5 mm, so the outer diameter (w2) of the inner annular projection (12). Is set to 50% of the inner diameter (W) of the opening (7). The protrusion height (h2) of the inner annular protrusion (12) is set to 0.5 mm. As in the first embodiment, since the depth (H) of the housing recess (4) is set to 4.7 mm, the protrusion height (h2) of the inner annular projection (12) is set to the housing recess ( It is set to 10.6% of the depth (H) of 4).
The outer annular projection (13) has an outer diameter (w3) set to 9.25 mm. Accordingly, the outer diameter (W3) of the outer annular convex portion (13) is set to 88.1% of the inner diameter (W) of the opening (7).

  Grounding portions (18) are formed on the lower surfaces of the two annular convex portions (12, 13). And the inner surface which faces the accommodation space (5) of the part enclosed by the inner side annular convex part (12), and the inner surface which faces the accommodation space (5) of the recessed groove part between both annular convex parts (12, 13) In addition, the support portions (17) are respectively formed, and the tablet (6) accommodated in the accommodating recess (4) is stably supported by these support portions (17).

  Next, the impact test at the time of dropping was implemented about the PTP package of said 1st Embodiment and 2nd Embodiment compared with the PTP package which has not formed the buffer part. Example 1 used in this impact test is a PTP package having the dimensions exemplified in the first embodiment, and Example 2 is a PTP package having the dimensions exemplified in the second embodiment. Comparative Example 1 is a PTP package in a state where the buffer portion is omitted from the PTP package of Example 1 described above.

In each PTP package, an unstretched polypropylene (CPP) resin sheet having a thickness of 0.3 mm was used as the resin sheet, and an aluminum film having a thickness of 0.02 mm was used as the lid. Each PTP package was formed with 21 accommodating recesses.
One uncoated tablet having an outer diameter of 8.0 mm, a thickness of 4.0 to 4.5 mm, and a mass of 220 mg was housed in the housing recess.

  The PTP package used for the impact test was one set of two PTP packages that were stacked with the resin sheet facing each other, and one set of three bundles bundled together. And the impact test was implemented using 15 samples for every Example and comparative example. Therefore, 1890 tablets are used each.

  In the impact test, the above-mentioned sample was dropped freely from the height of 100 cm once onto the floor surface when the PTP package was horizontal, when dropped three times, and dropped three times. After that, the number of tablets that were broken in the PTP package after dropping was visually checked for each free fall from the height of 150 cm onto the floor surface, and the damage rate for all tablets was calculated. . The test results are shown in the impact resistance comparison table of FIG.

  As is clear from the results of the impact test described above, in Example 1 and Example 2 of the present invention, the tablet breakage rate could be greatly reduced as compared with the PTP package of Comparative Example 1.

  In the second embodiment, the two annular convex portions (12, 13) are formed as the buffer portion (10). In this case, as shown in FIG. 4, the portion surrounded by the inner annular convex portion (12) is a prone concave portion (15) recessed toward the accommodating space (5). The portion between the annular convex portions (12, 13) can be regarded as an annular concave groove (16) recessed toward the accommodation space (5). That is, the buffer portion (10) according to the present invention may include a concave portion that is recessed toward the accommodation space (5).

  In the third embodiment of the present invention shown in FIG. 6, as the buffer portion (10), a prone concave portion (15) and an annular convex portion (14) are combined. A support portion (17) is formed on the inner surface of the prone recess (15) on the side of the storage space (5), and the tablet (6) in the storage recess (4) is supported by the support portion (17). ing. On the other hand, a grounding part (18) is formed at the lower end of the annular convex part (14), and the grounding part (18) and the support part (17) are connected to the bottom part (8) of the accommodating concave part (4). ) Is larger than the wall thickness and spaced apart in the vertical direction.

  In each of the above embodiments, the case has been described in which the housing recess is formed in a circular shape in plan view. However, in the present invention, the housing recess may have another shape. For example, in another modification shown in FIG. 7, the housing recess (4) is formed in an oval shape in plan view.

That is, in the fourth embodiment shown in FIG. 7 (a), the accommodating recess (4) is formed in an oval shape in plan view, for example, corresponding to the case where the tablet to be accommodated is oval shape in plan view. is there. An impact portion (10) having an oval shape in plan view is formed in a prone shape on the bottom portion (8) of the accommodating recess (4).
Further, in the fifth embodiment shown in FIG. 7 (b), two impact portions (10) having a circular plan view are provided on the bottom portion (8) of the accommodating recess (4) formed in an oval shape in plan view, respectively. It is shaped like a prone.
Other configurations, such as the dimensions of the impact portion, are the same as those in the first embodiment described above and operate in the same manner, so that the description thereof is omitted.

  The impact-resistant PTP package and the resin sheet used therefor described in each of the above-described embodiments are examples for embodying the technical idea of the present invention. These are not limited to those of this embodiment, and various modifications can be made within the scope of the claims of the present invention.

  For example, in the first embodiment, 21 housing recesses are formed in one resin sheet. However, in the present invention, the number and positions of the housing recesses are not limited to those in this embodiment. Moreover, in this 1st Embodiment, since the ear | edge part of the resin sheet is not formed too long, the whole PTP package body can be formed compactly, and it is preferable. However, the PTP package of the present invention and the resin sheet used therefor may have long ears as in the prior art 2, and in this case, combined with the above-mentioned buffer part, breaks the tablet. It can be further reduced, which is preferable. Furthermore, the PTP package of the present invention can be combined with the uneven heat-sealing resin layer of the prior art 1 described above.

  Moreover, said 2nd Embodiment demonstrated the case where a buffer part was provided with two annular protrusions. However, in the present invention, when the accommodating recess is larger in plan view, the buffer portion can be provided with a triple or quadruple annular protrusion.

In each of the above embodiments, the case where the solid material is a tablet has been described. However, the solid substance accommodated in the accommodating part of the PTP package of the present invention may be a solid substance other than pharmaceuticals as well as tablets other than uncoated tablets. The shape, dimensions, components, etc. of the solid substance are specified. It is not limited to those.
Furthermore, although the PTP package was dropped in the above-described impact test, the shock absorber formed on the PTP package of the present invention receives an impact caused by something other than dropping, such as when the PTP package collides with another object. Even so, it goes without saying that the shock received by the solid matter in the housing recess can be satisfactorily buffered.

  The impact-resistant PTP package of the present invention and the resin sheet used therefor can absorb the impact of dropping well, reduce the damage of the contained solid matter, and can be implemented at low cost, and the entire package can be made compact. Since it can be maintained, it is particularly suitable for a PTP package for packaging pharmaceutical tablets, but is also suitable for a PTP package for packaging solids for other uses such as food.

DESCRIPTION OF SYMBOLS 1 ... PTP package 2 ... Resin sheet 3 ... Cover material 4 ... Storage recessed part 5 ... Storage space 6 ... Solid substance (tablet)
7. Opening of receiving recess (4) 8... Wall (bottom) opposite to opening (7) across holding space (5)
10 ... Buffer part
11 ... Protruding convex part
12 ... Inner annular convex
13 ... Outer annular convex
14… Round convex part
15 ... prone depression
16: annular groove W: opening width of opening (7) (inner diameter of opening)
w1… Width of prone convex (11) (outer diameter of convex)
w2… Inner annular convex part (12) width (external diameter of convex part)
w3… Outer annular convex part (13) Width (outer diameter of convex part)

Claims (7)

An accommodation recess (4) is provided on one side of the resin sheet (2), and the solid (6) is accommodated in the accommodation space (5) in the accommodation recess (4). A PTP package in which the part (7) is covered with a sheet-like lid (3),
Of the wall portions of the housing recess (4), the wall portion (8) on the opposite side of the opening (7) across the housing space (5) has at least one of a convex portion and a recess. An impact-resistant PTP package characterized by forming a buffer portion (10) comprising   The impact-resistant PTP package according to claim 1, wherein the buffer portion (10) includes convex portions (11, 12, 13, 14) protruding outward from the housing space (5).   The impact-resistant PTP package according to claim 1 or 2, wherein the buffer portion (10) includes a recess (15, 16) that is recessed toward the accommodation space (5).   The impact-resistant PTP package according to any one of claims 1 to 3, wherein the buffer portion (10) is formed in an annular shape.   The impact-resistant PTP package according to claim 4, wherein a plurality of the annular buffer portions (10) are concentrically formed.   In any cross section passing through the center of the buffer portion (10) in plan view, the width (w1, w2, w3) of the buffer portion (10) is equal to the opening width (W) of the opening (7). The impact-resistant PTP package according to any one of claims 1 to 5, which is 30% or more. A resin sheet for use in the impact-resistant PTP package (1) according to any one of claims 1 to 6, wherein a housing recess (4) for housing the solid material (6) is provided on one side. And
Resistant for impact-resistant PTP packaging, wherein the buffer portion (10) having at least one of a convex portion and a concave portion is formed on the wall portion (8) of the accommodating concave portion (4). Sheet.

Images