JP2022165247A - press-through package - Google Patents

Abstract

To provide a press-through package with a lid material having a structure in which a reinforcement layer is easily peeled off at the time of opening.SOLUTION: A press-through package 1 of the present invention includes: a resin container 2 having a sheet-like body part 22 including a front surface 22a and a back surface 22b, and a container-like storage part 21 that bulges outward from the front surface 22a and opens toward the back surface 22b to store an object T to be stored, and a sheet-like lid member 3 adhered to the resin container 2 so as to cover the storage part 21 from the back surface 22b side and overlap the body part 22. The lid member 3 has: a remainder lid part 4 that includes a base material layer 6 made of a metal foil through which the object T to be stored can be pressed, and a heat-sealable adhesive layer 7 arranged between the base material layer 6 and the resin container 2 and adhered to the body part 22; and a detachment lid part 5 that includes a reinforcement layer 10 for reinforcing the remainder lid part 4, and a release layer 8 disposed between the reinforcement layer 10 and the base material layer 6 and adhered to the base material layer 6 in a peelable state. The resin container 2 has a slit part 23 formed on the front surface 22a side of the body part 22, and the reinforcement layer 10 includes a resin reinforcement layer 10A1 made of a resin film.SELECTED DRAWING: Figure 1

Description

The present invention relates to press-through packages.

2. Description of the Related Art A press-through package (hereinafter sometimes referred to as PTP) is used as a packaging container for pharmaceuticals such as tablets and capsules. The PTP includes a sheet-shaped resin container having a container for containing a contained object such as a medicine, and a lid material attached to the resin container in a manner covering an opening provided in the container. . In such a PTP, the object housed in the housing portion is pressed through the housing portion toward the lid member side by applying force, and the lid member covering the opening of the housing portion is broken (pressing). Through) is opened. Also, in recent years, PTPs with a child resistance (CR) function, which prevents children from easily opening them, have been proposed.

For example, Patent Literature 1 discloses a PTP (PTP package) including a container sheet and a sheet-like lid material (lid material sheet) laminated on the container sheet. In this PTP, a cover material that includes a base material (aluminum foil) that can be pressed through and a reinforcing layer (cover film, protective layer) laminated on the base material in a detachable state is used. . In the state where the reinforcing layer is laminated on the base material, the reinforcing effect of the reinforcing layer prevents the cover member from being pushed and broken. In addition, when taking out an object contained in the container sheet at the time of unsealing, the reinforcing layer is peeled off from the base material side, and the base material remaining on the container sheet side is pushed and broken.

In the above PTP, a "gripping margin" is provided at the end of the cover material in order to facilitate peeling of the reinforcing layer. Specifically, a non-adhesive treated area is formed between the base material (aluminum foil) at the end of the lid material and the reinforcing layer (cover film) that overlaps it. , the reinforcing layer at that portion is easy to grip as a "gripping margin" when peeling off.

JP-A-2005-82179

As a cover material for PTP, there is a case where a material in which the base material and the reinforcing layer are entirely adhered to each other is required. Such a lid material is highly effective in preventing children from accidentally peeling off the reinforcing layer from the base material side, but since there is no non-adhesive treatment area at the end of the lid material, the user cannot open the reinforcing layer when opening the lid material. was difficult to peel off from the substrate side.

SUMMARY OF THE INVENTION An object of the present invention is to provide a press-through package having a lid member having a structure in which a peelable lid portion including a reinforcing layer can be easily peeled off from the remaining lid portion side when unsealed.

Means for solving the above problems are as follows. Namely
<1> A resin container having a sheet-shaped main body including a front surface and a back surface, and a container-shaped storage unit that bulges outward from the front surface and opens toward the back surface to store an object, and the storage unit. a sheet-like cover member adhered to the resin container so as to cover the back surface side and overlap the main body, wherein the cover member is a base material made of a metal foil through which the contained object can be pressed through and a remaining lid portion including a heat-sealable adhesive layer disposed between the base material layer and the resin container and adhered to the main body portion, a reinforcing layer for reinforcing the remaining lid portion, and the reinforcing layer. and a release lid portion including a release layer disposed between the substrate layer and adhered to the substrate layer in a peelable state, wherein the resin container includes the main body portion and the reinforcing layer includes a resin reinforcing layer made of a resin film.

<2> The press-through package according to <1>, wherein the reinforcing layer is made of a metal foil, and includes a metal reinforcing layer disposed at a position farther from the remaining lid portion than the resin reinforcing layer.

<3> The slit portion is arranged between the housing portion and an end portion of the main body portion on the surface side of the main body portion, and is formed of a portion from the slit portion to the end portion of the main body portion. , The press according to <1> or <2>, which has a gripping margin consisting of a separation portion that can be separated from the slit portion, and an overlapping portion that is a portion of the lid material that overlaps the separation portion in the thickness direction. through package.

<4> The lid member has a stop portion formed of a notch portion for cutting at least the peel-off lid portion in the thickness direction, and the stop portion overlaps the main body portion and the slit portion when viewed from above. The press-through package according to any one of <1> to <3>, wherein the accommodating portion is disposed between the press-through package.

<5> The lid material is disposed between at least one of the release layer and the base material layer or between the release layer and the resin reinforcing layer, and the peelable lid portion is separated from the remaining lid portion. The press-through package according to any one of <1> to <4> above, comprising an exposed printed layer after peeling that is visible when peeled.

<6> The remaining lid portion is arranged between the base material layer and the resin container and has a first printed layer that is visible from the resin container side, and the peel lid portion is located on the reinforcing layer. The press according to any one of <1> to <5>, which has a second printed layer arranged on the side opposite to the release layer and visible from the side opposite to the resin container side. through package.

According to the present invention, it is possible to provide a press-through package having a lid member having a structure in which the peelable lid portion including the reinforcing layer can be easily peeled off from the remaining lid portion side when the package is opened.

FIG. 2 is a cross-sectional view schematically showing the configuration of the press-through package of Embodiment 1; FIG. 2 is a cross-sectional view schematically showing the opening operation of the press-through package of the first embodiment; Sectional view schematically showing the configuration of the press-through package of Comparative Example 1 Sectional view schematically showing the configuration of the press-through package of Comparative Example 2 Sectional view schematically showing the configuration of a press-through package according to another embodiment

<Embodiment 1>
A press-through package (PTP) 1 according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2. FIG. In addition, in PTP1 shown by FIG.1 and FIG.2, let the upper side (the resin container 2 side) be a surface side, and let the lower side (the cover material 3 side) be a back surface side. FIG. 1 is a cross-sectional view schematically showing the configuration of PTP 1 according to Embodiment 1. As shown in FIG. The PTP1 is a packaging container having a child resistance function that accommodates an object T (medicine such as tablets and capsules). The PTP 1 includes a resin container 2 and a lid member 3.

The resin container 2 is a known resin container for PTP, and is made of transparent thermoplastic resin such as polyvinyl chloride, polyvinylidene chloride, polypropylene, and amorphous polyethylene terephthalate. Specifically, the resin container 2 includes a sheet-like main body 22 including a front surface 22a and a rear surface 22b, and a rear surface 22b that bulges outward (upward) from the front surface 22a and opens toward the rear surface 22b to accommodate the object T. A container-shaped housing portion 21 and a slit portion 23 are provided. A plurality of housing portions 21 are usually provided in the resin container 2 . FIG. 1 shows one housing portion 21 for convenience of explanation.

The accommodating portion 21 has a container shape (concave shape) that opens downward (back surface 22 b side) and has a space S for accommodating the accommodated portion T inside. An opening 21A is provided in the boundary portion. In addition, the accommodating portion 21 has a shape following the shape of the accommodated portion T when viewed from above. The resin container 2 is formed by processing a thermoplastic resin sheet material having a thickness of approximately 60 μm to 400 μm into a predetermined shape, for example.

The lid member 3 is a sheet-like member adhered to the resin container 2 so as to cover the housing portion 21 from the back surface 22 b side and overlap the main body portion 22 . As shown in FIG. 1, the opening 21A provided in the housing portion 21 is covered with the lid member 3 adhered to the resin container 2. As shown in FIG. Such a lid member 3 includes a residual lid portion 4 adhered to the resin container 2 and a peelable lid portion 5 adhered to the residual lid portion 4 in a detachable state. In the case of this embodiment, the cover member 3 is entirely adhered to the back surface 22b of the body portion 22 of the resin container 2 .

The remaining lid portion 4 is arranged between the base layer 6 made of a metal foil through which the contained object T can be pressed through, and the base layer 6 and the resin container 2, and is adhered to the back surface 22b of the body portion 22. and a heat-sealable adhesive layer 7 . In this embodiment, a first printed layer 11 visible from the resin container 2 side (surface side) is formed between the base material layer 6 and the heat-sealable adhesive layer 7 .

The base material layer 6 is made of a thin metal foil that can be pressed through. When the PTP 1 is unsealed, a force is applied to the contained object T through the containing part 21 in a state in which the peelable lid part 5 is peeled off, and the contained object T is pushed toward the remaining lid part 4 side. The base material layer 6 of 4 is pushed and broken by the object T to be stored.

As will be described later, when the main body portion 22 of the resin container 2 is bent and cut at the slit portion 23 when the PTP 1 is opened, the remaining lid portion 6 (base material) overlaps the slit portion 23 in the thickness direction. Layer 6) is also disrupted.

The metal foil used for the base material layer 6 can be cut together with the slit portion 23 when the PTP 1 is opened, and can be pushed and broken after the peelable lid portion 5 is peeled off. Aluminum foil is preferred.

The thickness of the base material layer 6 is not particularly limited as long as it does not impair the purpose of the present invention, but is preferably 9 μm or more and 24 μm or less, more preferably 12 μm or more and 21 μm or less, and still more preferably 15 μm or more and 19 μm. It is below.

The heat-sealable adhesive layer 7 is for bonding the lid member 3 to the body portion 22 of the resin container 2 to seal the object T housed in the housing portion 21 of the resin container 2, and is for PTP. of known thermal adhesives. As the heat-sealable adhesive layer 7, for example, thermal adhesion such as polyester-based adhesive, polypropylene-based adhesive, vinyl chloride-based adhesive, vinyl chloride-vinyl acetate-based copolymer-based adhesive (vinyl chloride-acetate-based adhesive), etc. It consists of an agent formed in layers.

In the case of this embodiment, the heat-sealable adhesive layer 7 is set to have a thickness that does not interfere with the visibility of the first printed layer 11 . Therefore, the user can visually recognize the first printed layer 11 arranged on the surface of the base material layer 6 through the resin container 2 .

The first printed layer 11 is printed with characters or the like indicating information of the contained object T and other information, and is provided by a known printing method using a known colored printing ink. Such a first printed layer 11 is formed on the surface of the base material layer 6 made of metal foil. The first printed layer 11 is formed by a gravure printing method or the like using a printing ink containing a binder resin containing a colorant (pigment) such as carbon black, phthalocyanine blue, phthalocyanine green, quinacridone-based, azo-based, or titania. It is formed.

In other embodiments, the first printed layer may not be formed on the lid material, and in that case, the heat-sealable adhesive layer 7 may be directly laminated on the surface side of the base material layer 6. .

The peelable lid portion 5 is laminated on the back surface side of the remaining lid portion 4 and has a function (CR function) to reinforce the base layer 6 so that the base layer 6 is not easily torn. The release layer 8 arranged on the outermost surface side of the peelable lid portion 5 fully adheres to the base layer 6 of the remaining lid portion 4 with a force that prevents children such as infants from easily peeling it off. ing. Therefore, it is possible to prevent a child (infant) from accidentally breaking the base material layer 6 of the remaining lid portion 4 and taking out the stored object T from the storage portion 21 .

The peelable lid portion 5 of the present embodiment includes a reinforcing layer 10 that reinforces the remaining lid portion 5 such as the base material layer 6, and a reinforcing layer 10 that is disposed between the reinforcing layer 10 and the base material layer 6 and can be peeled off from the base material layer 6. and a release layer 8 that is adhered in a state. Furthermore, the peelable lid portion 5 of the present embodiment includes a second printed layer 12 and a protective layer (overprint layer) 13 .

The reinforcing layer 10 of this embodiment is a composite reinforcing layer including a resin reinforcing layer 10A1 made of a resin film and a metal reinforcing layer 10A2 made of a metal foil. The resin reinforcing layer 10A1 is arranged on the resin container 2 side, and the metal reinforcing layer 10A2 is arranged on the outer side of the resin reinforcing layer 10A1 (that is, the position farther from the remaining lid portion 5 than the resin reinforcing layer 10A1). The resin reinforcing layer 10A1 is laminated on the surface side of the metal reinforcing layer 10A2 with an adhesive layer 19 interposed therebetween. The adhesive layer 19 is formed, for example, by a known adhesion method such as a dry lamination method or a wet lamination method.

The resin reinforcing layer 10A1 has appropriate strength, flexibility, etc., and has a function of reinforcing the base material layer 6 of the remaining lid portion 4 and the like when the PTP 1 is unopened. When the body portion 22 is bent and divided at the slit portion 23, the growth of cracks in the thickness direction of the lid member 5 generated from the remaining lid portion 6 side due to the division is provided.

The material of the resin film used for the resin reinforcing layer 10A1 is not particularly limited as long as it does not impair the purpose of the present invention. Polyester films such as polybutylene terephthalate are preferred.

The thickness of the resin reinforcing layer 10A1 is not particularly limited as long as it does not impair the object of the present invention. It is preferably 20 μm or less, and more preferably 20 μm or less.

The metal reinforcing layer 10A2 has a function of reinforcing the base material layer 6 of the remaining lid portion 4 and the like together with the resin reinforcing layer 10A1. In addition, the metal reinforcing layer 10A2 reinforces the resin reinforcing layer 10A1 from suppressing the growth of cracks in the thickness direction of the lid member 5 generated from the remaining lid portion 6 side due to the division of the slit portion 23 when the PTP 1 is unsealed. It has a function to

The metal foil used for the metal reinforcing layer 10A2 is not particularly limited as long as it does not impair the object of the present invention, but for example, aluminum foil or the like is used.

The thickness of the metal reinforcing layer 10A2 is not particularly limited as long as it does not impair the object of the present invention. , 20 μm or less. Moreover, the thickness of the metal reinforcing layer 10A2 may be set to be greater than or equal to the thickness of the resin reinforcing layer 10A1, if necessary.

As described above, the release layer 8 is arranged between the reinforcing layer 10 and the base material layer 6 and is adhered to the base material layer 6 in a detachable state. The front side of the release layer 8 is entirely adhered to the back side of the base material layer 6 in a peelable state. The back side of the release layer 8 is adhered to the front side of the adhesive layer 9 formed on the front side of the reinforcing layer 10 (resin reinforcing layer 10A1).

As the release layer 8, for example, at least one selected from the group consisting of acrylic resin, nitrocellulose, vinyl chloride-acetate resin, polyolefin resin and the like is used.

^The release layer ⁸ is not particularly limited as long as it does not impair the purpose of the present invention. The peel strength of the release layer 8 (the peel strength of the peel lid portion 5) is preferably less than 8 N/15 mm, more preferably 6 N/15 mm or less. When the value of the peel strength of the release layer 8 is within such a range, the CR property is ensured while the peel property of the peelable lid portion 5 is ensured. The lower limit of the peel strength of the release layer 8 is not particularly limited as long as the object of the present invention is not impaired, but is preferably 0.8 N/15 mm or more, for example. A method for measuring the peel strength of the release layer 8 (the peel strength of the peel lid portion 5) will be described later.

The adhesive layer 9 is formed, for example, by a known adhesion method such as a dry lamination method or a wet lamination method. The adhesive layer 9 is formed, for example, with a mass after drying in the range of 1 g/m ² or more and 6 g/m ² or less.

The second printed layer 12 is formed on the back side (outer side) of the reinforcing layer 10 (metal reinforcing layer 10A2), and a known transparent protective layer (overprint layer) is formed so as to cover the second printed layer 12 from the outside. ) 13 are formed.

The second printed layer 12 is basically printed with characters or the like for displaying information about the object to be stored T or other information, similarly to the first printed layer 11, and is printed with known colored printing ink. It is provided by a known printing method using

Examples of resins used for the protective layer 13 include epoxy resins, melamine resins, nitrocellulose resins, butyral resins, acrylic resins, urethane resins, amino resins, polyethylene resins, polystyrene resins, polypropylene resins, and polyesters. resin, vinyl chloride resin, polyvinyl alcohol, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-ethyl acrylate copolymer, polyamide and the like. These may be used alone or in combination of two or more. Since the protective layer 13 is made of a transparent resin, the second printed layer 12 can be visually recognized through the protective layer 13 from the back side of the PTP 1 (the side opposite to the resin container 2).

In addition, the PTP 1 of the present embodiment has a grip margin 1A for facilitating the peeling of the peelable lid portion 5 from the remaining lid portion 4 side when unsealing.

The grip margin 1A is provided at the end of the PTP 1 as shown in FIG. 1 and the like. Specifically, the grip margin 1A consists of a portion of the resin container 2 from the slit portion 23 to the end portion 22c of the main body portion 22, and includes a separation portion 2A that can be separated from the slit portion 23 and a separation portion 2A of the lid member 3. It is composed of an overlapping portion 3A which is a portion that overlaps with the portion 2A in the thickness direction.

The slit portion 23 is a groove-shaped notch formed in the surface 22a of the main body portion 22 of the resin container 2 in order to form a grip margin 1A at the end of the PTP1. The position of the slit portion 23 is appropriately set in consideration of the size of the grip margin 1A that is easy for the user to grip. Such a slit portion 23 is arranged between the housing portion 21 and the end portion 22c of the body portion 22 on the surface 22a side of the body portion 22 in the resin container 2 .

As a method for forming the slit portion 23 at a predetermined portion of the main body portion 22, for example, a known forming method using a Thomson blade, a laser, or the like can be used.

The portion of the body portion 22 where the slit portion 23 is provided is not divided before the package is opened. The depth of the slit portion 23 (the depth of the groove) is appropriately set in consideration of the easiness of dividing the main body portion 22 at the slit portion 23 and the like.

In addition, the PTP 1 of the present embodiment includes, on its rear surface side, a dividing portion 30 for dividing the plurality of accommodating portions 21 into a predetermined number (for example, one each). The dividing portion 30 is provided at a position overlapping the main body portion 22 of the resin container 2 . The dividing portion 30 is provided in such a manner that it is cut from the back side of the lid member 3 (the side opposite to the resin container 2 ) toward the resin container 2 side. At the dividing portion 30, the lid material 3 (the peeling lid portion 5 and the remaining lid portion 4) of the PTP 1 is cut, and a small slit-shaped groove is formed on the back surface 22b side of the main body portion 22 so that the resin container 2 can be divided. ing.

As shown in FIG. 1 , the containing portion 21 for containing the object T is provided between the slit portion 23 and the divided portion 30 in the plane direction (horizontal direction) of the PTP 1 . In another embodiment, a plurality of through-holes penetrating the PTT 1 are arranged in a row while maintaining a space between each other (a so-called perforated cutting line) is used as the dividing portion 30. may

Next, a method for opening the PTP1 will be described with reference to FIG. FIG. 2 is a cross-sectional view schematically showing the opening operation of the press-through package of Embodiment 1. FIG. When the user opens the PTP 1, first, one hand (for example, the left hand) grasps the housing part 21 side of the PTP 1, and the other hand (for example, the right hand) holds the grip margin 1A between the thumb and index finger. Grab with After that, when the end of the PTP 1 is bent downward with the slit 23 as the starting point while the grip margin 1A is gripped, the slit 23 is divided, and the momentum of the division causes the base of the remaining lid 4 to be bent. A crack occurs in the thickness direction so that the material layer 6 and the like are also divided.

In addition, when the slit portion 23 is cut, the cutaway portion 2A that constitutes a part of the grip margin 1A is cut off from the main body portion 22 of the resin container 2 . Further, when the remaining lid portion 4 is divided along with the division of the slit portion 23, the divided portion is laminated on the rear surface side of the separation portion 2 and constitutes a part of the grip margin 1A. .

In the case of this embodiment, when a crack occurs in the thickness direction from the front side to the back side of the lid member 3 due to the division of the slit portion 23 as described above, the crack extends to the release layer 8 and the adhesive layer 9. Although it grows, it does not grow to the underlying reinforcement layer 10 (resin reinforcement layer 10A1, etc.). In other words, the reinforcing layer 10 (the resin reinforcing layer 10A1, etc.) can suppress the growth of the cracks in the thickness direction, and remains as it is without being broken even after the slit portion 23 is cut.

After the crack is formed in the thickness direction of the lid member 3 as described above, the gripping margin 1A is pulled so that the gripping margin 1A wraps around to the back side of the PTP 1, whereby the peeling lid portion 5 of the lid member 3 is peeled off. , is peeled off from the remaining lid portion 4 side. The end portion of the peeling lid portion 5 forms an overlapping portion 3A together with a portion of the remaining lid portion 4 remaining in the grip margin 1A. Therefore, the grip margin 1A is in a state of being connected to the peeling lid portion 5. As shown in FIG.

Note that the adhesive force at the interface between the base layer 6 of the remaining lid portion 4 and the release layer 8 of the peel lid portion 5 is different from other interfaces (for example, the release layer 8 and It is set to be smaller than the adhesive strength of the interface with the adhesive layer 9, the interface between the adhesive layer 9 and the reinforcing layer 10 (the resin reinforcing layer 10A1), and the like. Therefore, even if the split of the lid member 3 exceeds the interface between the base material layer 6 and the release layer 8 due to the division of the slit part 23, peeling at the interface between the base material layer 6 and the release layer 8 is preferential. occurs in In this manner, the peelable lid portion 5 can be reliably peeled off at the interface between the base material layer 6 and the release layer 8 .

In the case of this embodiment, the peeling of the peelable lid portion 5 (the peeling between the base layer 6 and the release layer 8) stops when it reaches the dividing portion 30 (an example of the stopping portion). As described above, in the present embodiment, it is possible to selectively peel off only the portion of the peelable lid portion 5 that covers the target accommodating portion 21 .

After the peeling lid portion 5 is peeled off from the remaining lid portion 4, a force is applied to the object T in the container portion 21 from the surface side through the container portion 21, and the object T remains. It is pushed into the lid portion 4 side. Then, the stuffed object T breaks the remaining lid portion 4 covering the opening 21A of the storage portion 21 and is taken out from the storage portion 21 of the PTP1.

As described above, the PTP 1 of the present embodiment has the lid member 3 having a structure such that the peelable lid portion 5 including the reinforcing layer 10 can be easily peeled off from the remaining lid portion 4 side when unsealed. Such a PTP 1 has a child resistance (CR) function and is configured to be easily opened by the user when necessary.

In addition, the PTP 1 of this embodiment has a dividing portion 30 at a predetermined position on the back side of the lid member 3 , and the dividing portion 30 defines the peeling range of the peelable lid portion 5 . Therefore, when the peeling lid portion 5 is peeled off using the grip margin 1A, the peeling interface (the interface between the base layer 6 and the release layer 8) crosses the opening portion 21A of the housing portion 21 and is divided. When reaching the portion 30, the peel interface is discontinued there. In this manner, the peelable lid portion 5 within the range between the slit portion 23 and the divided portion 30 can be selectively peeled off from the remaining lid portion 4 . Therefore, the PTP 1 of the present embodiment can safely and easily take out only the intended stored object T from the PTP 1 . Moreover, when there is another housing portion 21 outside the dividing portion 30, the peeling lid portion 5 covering the opening portion 21A of the housing portion 21 is not peeled off unnecessarily.

As described above, in the present embodiment, the terminal end of the peelable lid portion 5 peeled off using the grip margin 1A is determined using the dividing portion 30 for dividing the PTP 1 into individual pieces. In the embodiment of (1), for example, a notch (an example of a stop portion) specially provided in the lid material may be used to determine the end of the peel lid portion. In this case, the notch cuts the lid material (at least the peelable lid) in the thickness direction, and there is no need to form a slit-like notch or the like in the resin container. Note that the dividing unit 30 exemplified in the first embodiment is also an example of a stopping unit.

Further, in the PTP 1 of the present embodiment, the first printed layer 11 can be visually recognized from the front side of the PTP 1, and the second printed layer 12 can be visually recognized from the rear side of the PTP 1. Therefore, the first printed layer 11 and the second printed layer 12 can be visually recognized from both sides of the PTP 1, and the PTP 1 can be used safely.

The present invention will be described in more detail below based on examples. In addition, the present invention is not limited at all by these examples.

[Example 1]
A PTP of Example 1 having the same basic structure as PTP1 shown in FIG. 1 was fabricated. Each structure of the resin container and lid material of Example 1 is as follows.

<Resin container>
A resin container 2 was produced using polyvinyl chloride (PVC).

<Lid material>
As the substrate layer 6, an aluminum foil (manufactured by UACJ Foil Co., Ltd., thickness: 17 μm, 1N30-H18) having a first printed layer 11 formed on its surface side was prepared. The surface side of the base material layer 6 was coated with a vinyl chloride adhesive (trade name “1E”, manufactured by Sakuranomiya Chemical Co., Ltd.) using a bar coater (coating amount: 3.7 g/m ² ). , the coated product was dried at 120° C. for 10 seconds to form a heat-sealable adhesive layer 7 . A polyethylene terephthalate film (PET film) (manufactured by Toyobo Co., Ltd., thickness: 16 μm) was prepared as the resin reinforcing layer 10A1. As the metal reinforcing layer 10A2, an aluminum foil (manufactured by UACJ Foil Co., Ltd., thickness: 17 μm, 1N30-H18) having a second printed layer 12 and a protective layer (OP coat) 13 formed on its back surface was prepared. Then, an adhesive layer 19 was formed on the surface of the metal reinforcing layer 10A2 using a two-liquid curable dry laminate adhesive. Specifically, 10 parts by mass of the product name "Dick Dry LX500" (manufactured by DIC Graphics Co., Ltd.) is used as the main agent, and 1 part by mass of the product name "KW75" (manufactured by DIC Graphics Co., Ltd.) is used as the curing agent. , and a mixture thereof was laminated on the metal reinforcing layer 10A2 to form an adhesive layer 19 with a coating amount of 5.0±0.5 g/m ² using a bar coater. Then, the reinforcing layer 10 was obtained by bonding the resin reinforcing layer 10A1 to the adhesive layer 19 .

The product name "S-01 Clear" (manufactured by Tanaka Chemical Co., Ltd.) is applied to the back surface of the base material layer 6 using a bar coater at a coating amount of 1.3 ± 0.5 g / m ² , The coated product was dried at 180° C. for 10 seconds to obtain a release layer 8 . On the other hand, an adhesive layer 9 was formed by using a two-liquid curing type adhesive for dry lamination in a form of being laminated on the resin reinforcing layer 10A1 of the reinforcing layer 10 . Adhesive layer 9 was formed in the same manner as adhesive layer 19 . Then, the back surface of the release layer 8 was attached to the adhesive layer 9 . Thus, the lid member 3 of Example 1 was produced.

<PTP>
The resin container 2 and the lid material 3 described above are heat-sealed under the conditions of a sealing temperature of 150° C., a sealing pressure of 0.2 MPa, and a sealing time of 1 second, and the tablet ( The PTP 1 of Example 1 containing the object to be accommodated T) was produced. A slit portion 23 was formed on the surface of the PTP1 (resin container 2) using a Thomson blade, and a division portion 30 was formed on the back surface of the PTP1.

[Comparative Example 1]
A PTP 100 (see FIG. 3) of Comparative Example 1, in which the structure of the cover material is different from that of Example 1, was produced by the following procedure. The resin container 2 has the same configuration as that of the first embodiment.

As the base material layer 106, a polyester film (transparent resin film) (trade name: "Tiafine", manufactured by Toyobo Co., Ltd., thickness: 14 μm) having a first printed layer 111 formed on its surface side was prepared. A polyester adhesive (trade name “B-9”, manufactured by Tanaka Chemical Co., Ltd.) was applied to the surface side of the base material layer 106 using a bar coater (coating amount: 3.6 g/m ² ). , the coated product was dried at 120° C. for 10 seconds to form a heat-sealable adhesive layer 107 . As the reinforcing layer 110, an aluminum foil (manufactured by UACJ Foil Co., Ltd., thickness: 25 μm, 1N30-H18) having a second printed layer 112 and a protective layer (OP coat) 113 formed on its back surface was prepared.

On the surface of the reinforcing layer 110, the product name "MF790PTPOP varnish" (manufactured by Toyo Ink Co., Ltd.) is applied using a bar coater at a coating amount of 1.3 ± 0.5 g / m ² , and the coated product is , and dried at 180° C. for 10 seconds to obtain a release layer 108 . Then, an adhesive layer 109 was formed on the release layer 108 using a two-liquid curing type adhesive for dry lamination. The adhesive layer 109 was formed in the same manner as the adhesive layer 19 of Example 1 above. Then, the back surface of the base material layer 106 was attached to the adhesive layer 109 . Thus, the lid member 103 of Comparative Example 1 was produced. Further, similarly to Example 1, the resin container 2 and the lid member 103 were heat-sealed and bonded to each other to prepare a PTP 100 of Comparative Example 1 containing a tablet (to-be-contained object T). As in Example 1, the PTP 100 was formed with the slit portion 23 and the dividing portion 30 .

[Comparative Example 2]
A PTP 200 (see FIG. 4) of Comparative Example 2, which has a lid portion different from that of Example 1, was produced by the following procedure. The resin container 2 has the same configuration as that of the first embodiment.

As the base material layer 206, an aluminum foil (manufactured by UACJ Foil Corporation, thickness: 17 μm, 1N30-H18) having a first printed layer 211 formed on its surface side was prepared. The surface side of the base material layer 206 is coated with a vinyl chloride adhesive (trade name “1E”, manufactured by Sakuranomiya Chemical Co., Ltd.) using a bar coater (coating amount: 3.7 g/m ² ). Then, the coated product was dried at 120° C. for 10 seconds to form a heat-sealable adhesive layer 207 . As the reinforcing layer 210, an aluminum foil (manufactured by UACJ Foil Co., Ltd., thickness: 17 μm, 1N30-H18) having a second printed layer 212 and a protective layer (OP coat) 213 formed on its back surface was prepared.

A release layer 208 was formed on the surface of the reinforcing layer 210 in the same manner as in Comparative Example 1 above. Then, an adhesive layer 209 was formed by laminating on the release layer 208 using a two-liquid curing type adhesive for dry lamination. The adhesive layer 209 was formed in the same manner as the adhesive layer 19 of Example 1 above. Then, the back surface of the base material layer 206 was attached to the adhesive layer 209 . Thus, the lid member 203 of Comparative Example 2 was produced. Further, similarly to Example 1 and the like, the resin container 2 and the lid member 203 were heat-sealed and bonded together to prepare a PTP 200 of Comparative Example 2 containing a tablet (object to be stored T). In addition, the PTP 200 was formed with the slit portion 23 and the dividing portion 30 as in the first embodiment.

The PTPs of Example 1 and each comparative example were evaluated as follows.

[Peelability]
For the PTPs of Example 1 and each of the comparative examples, the peelability (peelability) of peeling off the peelable lid portion by grasping the outer end portion (gripping margin) of the slit portion with fingertips was evaluated according to the following criteria. The results are shown in Table 1.
<Criteria>
・The peelable lid can be peeled off ・・・・「〇」
・Unable to peel off the peeling lid ・・・・・・「×」

In Example 1, the peelable lid portion could be peeled off from the remaining lid portion at the interface between the base material layer and the release layer. In Comparative Example 1, the lid material was peeled off from the resin container together with the base material layer at the interface between the resin container and the base material layer without the base material layer being divided. In Comparative Example 2, all the layers including the reinforcing layer were separated from the slit in the thickness direction, and the PTP was divided into two with the slit as a boundary. Further, in Comparative Example 2, the residual lid portion and the peeled lid portion remained in the opening of the container.

[Peel strength]
In Example 1 and each comparative example, a strip-shaped test piece with a width of 15 mm was produced from the cover material of PTP (that is, the PTP in Example 1) that could be peeled off with the release layer. Then, the test piece was subjected to a 180-degree peel test under the condition of 150 mm/min, and the peel strength (N/15 mm) of the peel lid portion was measured. The results are shown in Table 1. In Comparative Examples 1 and 2, the peel strength was not measured (shown as "-").

[Pushability]
Using each of the PTPs used in the above evaluation of peelability, the easiness of pushing and tearing the lid material (pushability) when taking out the contained object was evaluated according to the following criteria. The results are shown in Table 1. In Comparative Example 1, the base material layer was peeled off from the resin container during evaluation of the peelability, and the contained object could be taken out at that stage, so the evaluation of the pushability was not performed ("- ”). In Comparative Example 2, since the peelable lid portion could not be peeled off during evaluation of the peelability, the state in which the peelable lid portion was attached (the residual portion and the peelable lid portion remained in the opening of the storage portion state), the pushability was evaluated.
<Criteria>
・The tablet can be easily pushed out by breaking the cover material.
・You can feel the hardness when breaking the lid material, but you can still push out the tablet.

As shown in Table 1, the PTP of Example 1 is excellent in peelability and pushability. It was confirmed that this PTP has not only a CR function but also a so-called senior friendly (SF) function. If the peel strength exceeds 6 N/15 mm, peeling of the peelable lid portion from the remaining lid portion becomes difficult (requires a relatively large amount of force for peeling), resulting in a problem of peelability.

Comparative Example 1 is a case of using a polyester film as the base material layer. In Comparative Example 1, it was confirmed that the tearing of the polyester film accompanying the cleavage from the first slit portion was difficult.

Comparative Example 2 is a case where a 17 μm-thick aluminum foil is used as the reinforcing layer, but the 16 μm-thick PET film used in Example 1 is not used. In this case, it was confirmed that the reinforcing layer was also torn along with the cleavage from the first slit, and the PTP was split at the first slit.

<Other embodiments>
The present invention is not limited to the embodiments explained by the above description and drawings, and the following embodiments are also included in the technical scope of the present invention.

(1) In the PTP of the above embodiment, other known layers may be laminated on the lid member as long as the object of the present invention is not impaired.

(2) As another embodiment, the PTP 300 having the configuration shown in FIG. 5 may be used. Specifically, the lid member 303 is disposed between the release layer 8 and the base material layer 6, and is a printed layer that is visible when the peel lid portion 5 is peeled off from the remaining lid portion 304 (exposed printed layer after peeling). layer) 311 may be provided. According to such a PTP 300, by peeling off the peeling lid portion 5 from the remaining lid portion 304 along the release layer 8, characters and the like printed on the printing layer 311 will appear. etc., and it becomes easier to obtain information. In addition, since the printed layer 311 is partially formed so as to be scattered on the back side of the base layer 6, the back side of the base layer 6 where the printed layer 311 is not formed is heat-sealed. It is in a state of being in direct contact with the adhesive layer 7 . Moreover, such a printed layer may be arranged between the release layer 8 and the resin reinforcing layer 10A1.

DESCRIPTION OF SYMBOLS 1...PTP, 1A... Grip margin, 2...Resin container, 21...Accommodating part, 22...Main body part, 3...Lid material, 4...Remaining lid part, 5...Peeling lid part, 7...Heat-sealable adhesive layer, 8 Release layer 9 Adhesive layer 10 Reinforcing layer 10A1 Resin reinforcing layer 10A2 Metal reinforcing layer 11 First printed layer 12 Second printed layer 13 Protective layer

Claims (6)

a resin container having a sheet-like body portion including a front surface and a back surface; a sheet-like cover member adhered to the resin container so as to cover the side and overlap the main body,
The lid member comprises a base layer made of a metal foil through which the contained object can be pressed through, and a heat-sealing adhesive layer disposed between the base layer and the resin container and adhered to the main body. a remaining lid portion containing the remaining lid portion, a reinforcing layer that reinforces the remaining lid portion, and a release layer disposed between the reinforcing layer and the base material layer and adhered to the base material layer in a peelable state. A press-through package having a lid,
The resin container has a slit formed on the surface side of the main body,
The press-through package, wherein the reinforcing layer includes a resin reinforcing layer made of resin. 2. The press-through package according to claim 1, wherein said reinforcing layer is made of metal foil and includes a metal reinforcing layer arranged at a position farther from said remaining lid portion than said resin reinforcing layer. The slit portion is disposed between the accommodating portion and an end portion of the main body portion on the surface side of the main body portion,
It consists of a separation part which is formed from the slit part to the end part of the main body part and which can be separated from the slit part, and an overlapping part which is a part of the cover material that overlaps the separation part in the thickness direction. 3. The press-through package according to claim 1 or 2, comprising a gripping allowance. At least the lid member has a stop portion formed of a cut portion for cutting the peel lid portion in the thickness direction,
4. The stop portion according to any one of claims 1 to 3, wherein the stop portion is provided so as to overlap the main body portion and the accommodating portion is arranged between the slit portion and the main body portion when viewed from above. press-through package. The lid material is disposed between at least one of the release layer and the base material layer or between the release layer and the resin reinforcing layer, and when the peelable lid portion is peeled from the remaining lid portion 5. The press-through package according to any one of claims 1 to 4, comprising an exposed print layer after peeling that is visible on the surface. The remaining lid portion has a first printed layer disposed between the base material layer and the resin container and visible from the resin container side,
Claims 1 to 5, wherein the peel lid portion has a second printed layer disposed on the side of the reinforcing layer opposite to the release layer and visible from the side opposite to the resin container. A press-through package according to any one of Claims 1 to 3.

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