JP6230216B2 - Press-through pack lid - Google Patents

Description

  The present invention relates to a press-through pack for containing tablets, capsule-shaped medicines and the like, a lid used for the pack, and a lid material for producing the lid.

Conventionally, in the food and beverage fields, barcodes are printed on product packaging and used for price calculation and inventory management.
In recent years, barcodes are also required to be printed on pharmaceutical packaging such as capsules and tablets for the purposes of expiration date management, prevention of misuse and misuse, and inventory management.

In view of these requirements, the present applicant has previously developed a packaging sheet having excellent barcode reading accuracy (Patent Document 1).
The invention of this packaging sheet proposes that the white color layer is interposed between the aluminum foil and the bar code part, thereby improving the reading accuracy of the bar code, and further between the aluminum foil and the white color layer. It has been proposed that the reading accuracy of the barcode is further improved by interposing a transparent or translucent underlayer on the surface.

JP 2008-174302 A

The packaging sheet described in Patent Document 1 has improved the bar code reading accuracy, but it has been found that a new disadvantage occurs.
That is, since a white colored layer is laminated on the entire surface of one side of the aluminum foil, the punching blade (cutting blade) wears out (wears) during manufacture of the final product, the press-through pack, and the life of the punching blade is shortened. The demerit that it became remarkably short occurred.
This is probably because white pigment such as titanium oxide pigment used in the white colored layer wears the punching blade at the time of punching, and at the same time, the pigment or wear debris sticks to the punching blade, which further deteriorates the sharpness. It is thought that the lifetime of the is significantly reduced.

  Accordingly, a problem to be solved by the present invention is to provide a cover for a press-through pack having excellent cutting ability, in which the life of the punching blade is equal to or longer than that of the conventional one while maintaining the barcode reading accuracy and visibility. That is.

  As a result of diligent ingenuity in view of the above problems, the present inventors have found that the above problems can be overcome by a special form. That is, the present invention relates to the following press-through pack, a lid used therefor, and a lid material for producing the lid.

1. A press-through pack in which at least a thermal adhesive layer, an aluminum foil, and a white colored layer are laminated in this order, the press-through characterized by lacking a white colored layer in the entire periphery of the peripheral edge of the lid It is the lid of the pack.
2. 2. The press-through pack cover according to item 1 above, wherein the white colored layer is absent from the periphery of the cover to a position separated from 0.5 mm to 5 mm.
3. 3. The press-through pack cover according to item 1 or 2, further comprising a barcode on the outer surface side of the white colored layer.
4). It is a lid | cover of the press-through pack in any one of said 1-3 further provided with the lack zone of a white colored layer in the position corresponding to the cutting plan part of a press-through pack.
5. 5. The press-through pack lid according to item 4, wherein the missing band has a width of 1.0 to 5 mm.
6). A container of a press-through pack in which a plurality of storage recesses are formed, and a lid of the press-through pack according to any one of the above items 1 to 5, which is stacked on the container of the press-through pack and seals an opening of the storage recess. Is a press-through pack.
7). It is a lid | cover material with which the lid | cover of the press through pack in any one of said 1-5 is manufactured by cut | disconnecting the position corresponding to the said peripheral part.

  According to the present invention, since the white colored layer is lacking in the portion to be punched such as the peripheral portion of the lid member, the punching blade is prevented from being worn by the white pigment contained in the white colored layer. Therefore, the lifetime of the punching blade is as long as that in the manufacture of a conventional press-through pack having no white colored layer.

  Since the white colored layer remains in a necessary portion in the region other than the portion to be punched out of the lid material, the reading accuracy of the barcode printed thereon is excellent. Moreover, since it is excellent in the visibility of the character, figure, etc. which were printed on the white colored layer, it can prevent misreading and accidental ingestion for an elderly person or a person with a little blindness.

(A) is a front view, (b) is a side view, and (c) is a rear view of the press-through pack of the embodiment. 1 is a cross-sectional view of the press-through pack according to the embodiment of FIG. Schematic side view of the lid of the embodiment Top view of the lid of the embodiment The top view of the lid of other embodiments The top view which shows the lid of other embodiments.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a press-through pack (hereinafter referred to as “PTP”) 10 according to an embodiment includes a container 11 and a lid 12 according to an embodiment stacked on the container 11.

The container 11 is formed with a plurality of storage recesses 11a so that tablets, capsules, and the like can be stored therein. As such a container 11, a well-known thing can be used.
In FIG. 1, the container 11 has a rectangular shape in plan view, and a total of ten storage recesses 11 a having a circular shape in plan view are provided here: five rows along the longitudinal direction of the container and two rows along the short side direction. However, the overall shape of these containers and the shape, number, and arrangement of the storage recesses are not limited thereto. For example, the overall shape of the container may be a square or a circle. Although the manufacturing method of the container 11 is not particularly limited, it is usually produced by molding a synthetic resin sheet.

As shown in FIGS. 2 and 3, the lid 12 according to the embodiment includes at least a thermal bonding layer 12a (not shown in FIG. 2), an aluminum foil 12b, and a white colored layer 12c, which are laminated in this order, and the white colored layer 12c. On the top, printing 12d of barcodes, characters, graphics, etc. is performed. The printing 12d can be omitted.
The lid 12 of the embodiment is laminated and adhered to the container 11 by the thermal adhesive layer 12a, and seals the opening of the storage recess 11a of the container 11.
Of course, in the lid 12 of the embodiment, a key lacquer layer, a printing layer, or the like may be interposed between the thermal adhesive layer 12a and the aluminum foil 12b, similarly to a known PTP lid. Further, a primer layer, an undercoat layer or the like may be interposed between the aluminum foil 12b and the white colored layer 12c, and an overprint (printing protective layer), a mat layer or the like is provided on the outer surface side of the white colored layer 12c. Furthermore, you may laminate | stack.

However, unlike the known lid, at the peripheral portion of the lid 12 of the embodiment, as shown in FIGS. 1 to 3, the white colored layer 12c is almost uniformly absent over the entire circumference, and the annular lacking portion 12e It has become. The white colored layer 12c is preferably lacking from the periphery of the lid 12 to a position separated by 0.5 mm or more and 5 mm or less. That is, the width W1 of the missing portion 12e shown in FIG. 1 is preferably 0.5 mm to 5 mm.
The area ratio of the white colored layer 12c to the entire surface of the lid 12 (the total area of one surface) is preferably 80% or more, and more preferably 90% or more.
If it is less than 80%, the direct reflection light from the aluminum foil 12b becomes strong and the area of the white colored layer 12c becomes relatively small, and the visibility is slightly inferior.
Further, if the white colored layer 12c is made to be more than 5 mm from the periphery of the lid 12, the visibility is slightly inferior for the same reason.

As the thermal adhesive layer 12a, the same polypropylene-based, vinyl chloride-based, and vinyl acetate-based adhesives as those used in known PTP can be used. The coating amount is about 3 to 10 g / m ² on the basis of the solid content as well as known ones.
The aluminum foil 12b may be a known one. For example, hard foils such as JIS / AA 1N30, 1070, 1085, 8021, and 8079 can be employed. The thickness is preferably about 7 to 50 μm, more preferably about 12 to 30 μm.

The white colored layer 12c includes a white pigment and a binder. Examples of white pigments include titanium oxide (titanium dioxide), barium sulfate, zinc oxide, calcium carbonate, and the like, but use of titanium oxide is preferred industrially. As the binder, a resin mainly composed of a synthetic resin and used for a normal ink can be used. For example, a modified polyolefin resin, a petroleum hydrocarbon resin, nitrocellulose, butyral and the like can be used. The content of the white pigment in the white colored layer is preferably 10 to 40% by weight, more preferably 20 to 30% by weight, based on the solid content. Further, the coating amount onto the aluminum foil 12b of the white colored layer 12c is preferably set to 1.0g ^{/ m 2} ~4.0g ^/ m 2 on a solids basis.

When printing a barcode or the like on the white colored layer 12c, a known barcode can be printed. The type of barcode may be, for example, a one-dimensional barcode, a two-dimensional barcode, or a matrix or composite QR code (registered trademark). As the ink used for barcode printing, a known ink can be employed. For example, printing ink containing carbon black or the like as a colorant (pigment) can be printed by a gravure printing method, a flexographic printing method, or the like. As long as the barcode can be read, it may be other than black printing with carbon black. The barcode printing layer is usually formed with a thickness of 0.5 μm to 2.0 μm after drying, and the pigment content is usually about 10 to 40% by weight (preferably 15 to 40% by weight) in the ink layer based on the solid content. It is good to do. Examples of the binder resin contained in the printing ink include vinyl acetate resin, vinyl chloride resin, vinyl acetate-vinyl chloride copolymer resin, polyurethane resin, and nitrocellulose.
Further, an overcoat (also referred to as overprint / OP) can be provided so as to cover the print 12d such as a barcode. Further, the overcoat may contain a matting agent such as silica or calcium carbonate.
Since barcodes, characters, figures, and the like are printed on the white colored layer 12c, the reading accuracy by the barcode reader and the visual visibility are all excellent.

The lid 12 of the embodiment is produced by punching the lid member 13 of the embodiment as shown in FIG.
The lid member 13 of the embodiment is formed by laminating at least a thermal adhesive layer, an aluminum foil, and a white colored layer in the same manner as the lid 12, and missing lattices 13a and 13b in which the white colored layer is missing in a lattice shape on the surface. Is present.
The missing lattices 13 a and 13 b are composed of longitudinal missing lattices 13 a arranged in parallel at equal intervals along the longitudinal direction of the lid member 13 and lateral missing lattices 13 b along both side edges of the lid member 13.

By cutting the lid member 13 with a known punching blade along the middle of the longitudinal direction of the missing lattice 13a in the vertical direction (in addition, the corner portion is appropriately R-processed), the lid 12 of the embodiment is produced. Is done. That is, in the state of the lid member 13 as shown in FIG. 4, the vertical missing lattice 13 a exists at the boundary between the adjacent lids 12.
Since the white colored layer does not exist at the location where the punching blade comes into contact, the punching blade is prevented from colliding with the white pigment in the colored layer and being worn.
Here, the width of the missing grids 13a and 13b in the lid member 13 is preferably 1 mm or more. If it is less than 1 mm, the white colored layer may contact or collide with the punching blade due to variations in the manufacturing process.
In FIG. 4, only the portions for manufacturing the four sets of lids 12 are shown in the lid member 13, but it goes without saying that the number of sets is not particularly limited. Also, the punching method is not limited, and a method of punching a plurality of press-through packs in one step (one action) may be used. After filling a series of containers with a drug, the lid material is heat sealed, Thereafter, the container and the lid can be simultaneously punched out in the state of the package.

FIG. 5 shows a lid 12 according to another embodiment. The overlapping points with the embodiment described above are omitted, and only the characteristic part will be described below.
In this embodiment, the lid 12 is separated into dosage units (in FIG. 5, two tablet units. In this specification, for convenience, they are referred to as “dosage units” but may not actually coincide with the dosage units). The perforation 12f is given. For the purpose of facilitating the same separation (cutting), a half cut may be applied instead of the perforation 12f.
Since the perforation 12f is inserted into the lid 12 (the lid member 13 for producing the lid), when a perforation blade is used (half-cut blade in the case of half cut), the portion where the perforation 12f is to be placed is colored white. The presence of the layer 12c causes the same blade wear problem as described above. For this reason, in this embodiment, as shown in the drawing, along each perforation 12f (corresponding to the planned cutting portion), a missing band 12g lacking a white colored layer is provided.
The width W2 of the missing band 12g is preferably 1 mm to 5 mm. If it is less than 1 mm, the white colored layer may contact or collide with the punching blade due to variations in the manufacturing process. If it exceeds 5 mm, the visibility is slightly inferior.

FIG. 6 shows a lid 12 according to still another embodiment.
The feature of this embodiment is that it is easy to separate every dosage unit. For the elderly and blind people, perforations and half-cut lines are difficult to see, and their existence may not be known.
By providing the missing recess 12h near both ends of the perforation 12f as shown in FIG. 6, even if the perforation 12f and the half-cut line are not directly visible, the missing recess 12h can be used as a guide. In addition, since the touch (finger touch) varies depending on the presence or absence of the white colored layer 12c, it can be used as a guide relying on the sense of touch.

  Examples of the present invention will be described below, but the present invention is not limited by the examples.

Example 1
4 g / m ² of a polypropylene-based thermal adhesive was applied to one surface of an aluminum foil (1N30 hard foil) having a thickness of 17 μm on a solid basis. On the other side of the aluminum foil, a white ink containing 21% by weight of a titanium oxide pigment based on the solid content (binder is a polypropylene resin) was applied at 2 g / m ^{2 based} on the solid content by gravure printing to prepare a lid material sample. However, when printing white ink, a missing stripe with a width of 3 mm is provided in the longitudinal direction of the aluminum foil, and a missing stripe with a width of 6 mm is provided in the short direction of the aluminum foil, and each missing stripe (missing grid) is punched out. Scheduled part.
(Example 2)
On the outer surface of the white colored layer, black ink (binder is a nitrocellulose resin) further containing 16% by weight of carbon black pigment based on solid content is barcode size (nominal 0.254 mm / module: line thickness minimum 0. Example 1 except that a bar code of 2 to 1.25 mm and a space of 0.3 to 0.8 mm) and other characters and marks were printed at about 1.5 g / m ² on a solid basis by gravure printing. A lid material sample was prepared in the same manner as described above.
(Example 3)
When printing white ink, in addition to the grid-like missing stripes, a missing band with a width of 1.5 mm was further provided as a perforation planned portion for separating into dosage units (2 tablets in this case). Other than that, a lid sample was prepared in the same manner as in Example 1.
Example 4
4 g / m ^{2 of a} vinyl chloride-vinyl acetate copolymer thermal adhesive was applied on one side of an aluminum foil (8021 hard foil) having a thickness of 20 μm based on the solid content. On the other side of the aluminum foil, a white ink containing 21% by weight of a titanium oxide pigment based on the solid content (binder is a polypropylene resin) was applied at 2 g / m ^{2 based} on the solid content by gravure printing to prepare a lid material sample. However, when printing white ink, a missing strip having a width of 3 mm is provided in the longitudinal direction of the aluminum foil, and a missing strip having a width of 6 mm is provided in the short direction of the aluminum foil. .
(Comparative Example 1)
A cover material sample was prepared in the same manner as in Example 1 except that solid ink printing was not used in Example 1 except that no strip of white ink was provided.
(Comparative Example 2)
In Example 2, a bar code similar to Example 2 and other characters and marks were printed directly on the aluminum foil without providing any white colored layer. Otherwise, a lid material sample was prepared in the same manner as in Example 2.

<Punching test>
The lid material samples prepared in Examples 1 to 4 and Comparative Example 1 were subjected to a punching test using a commercially available tablet filling and packaging machine. In the test, a PTP container formed by molding a polypropylene resin sheet having a thickness of about 300 μm was used, and a dummy tablet was used as the tablet. After filling the dummy tablets, the PTP container and each lid material sample were heat-sealed at about 220 ° C., and then punched into a width of 39 mm, a length of 94 mm, and a corner of 4 mmR. In the cover material of the example, even after 6 months (average of about 200 shots / min), there was almost no wear of the punching blade (made of steel), and it was possible to punch out in the same manner as at the start of the test. In Example 1, wear of the punching blade was observed at the time of 2 months, and the lid was damaged (defective product) at the time of punching.

<Bar code reading test>
As a result of scanning the barcode printed on the cover material samples of Example 2 and Comparative Example 2 using a commercially available barcode reader, the barcode of Example 2 could be accurately recognized. No. 2 barcode could not be accurately recognized no matter how many times it was scanned.

<Visibility>
When 20 elderly people over 80 years old observed characters and marks on the printed surface of the lid punched out from Example 2 and Comparative Example 2, all 20 people were easier to read the printed surface of the lid of the Example. It was evaluation.

It should be considered that the embodiments and examples disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications and variations within the scope and meaning equivalent to the terms of the claims.
For example, the lacking portion 12e does not have to have the same width, and the inner edge portion may have a corrugated shape by changing the width.

DESCRIPTION OF SYMBOLS 10 Press-through pack 11 Embodiment 11a Storage recess 12 Lid 12a Thermal adhesive layer 12b Aluminum foil 12c White colored layer 12d Printing 12e Missing part 12f Perforation 12g Missing band 12h Missing recess 13 Lid 13a Missing grid 13b Missing grid
W1 Width of missing part
W2 width of missing zone

Claims (4)

A cover material for a press-through pack in which a white colored layer containing at least a thermal adhesive layer, an aluminum foil, and titanium oxide as a white pigment is laminated in this order,
On the surface thereof, provided with a missing lattice in which the white colored layer is missing in a lattice shape,
A plurality of lids are partitioned in a lattice shape by this missing lattice,
Each of the lids has a white colored layer lacking the entire periphery of the peripheral edge due to the missing lattice, and the entire periphery of the peripheral edge lacking the white colored layer is a portion to be punched by a punching blade,
Each lid has a position that coincides with the planned cutting portion of the container of the press-through pack on which the lid is laminated, and is a planned cutting portion by a perforated blade or a half-cut blade. A cover material for a press-through pack, which is provided with a missing recess of the white colored layer connected to the lattice .   The cover material of the press-through pack according to claim 1, wherein a white colored layer is absent from a periphery of the cover to a position separated by 0.5 mm or more and 5 mm or less.   The lid material of the press-through pack according to claim 1 or 2, further comprising a barcode on an outer surface side of the white colored layer. A container of a press-through pack in which a plurality of storage recesses are formed;
A lid formed by punching out the lid material of the press-through pack according to any one of claims 1 to 3 , which is laminated on the container from the side of the thermal adhesive layer and seals the opening of the storage recess. A press-through pack consisting of

Images