JP6080353B2 - Press-through pack lid and press-through pack package - Google Patents

Description

  The present invention relates to a cover material for a press-through pack and a press-through pack package using the same.

  In a press-through pack (also referred to as PTP) package that has been commercially available, the lid is mainly composed of an aluminum foil and a thermal adhesive layer. Widely used in hospitals, pharmacies, drug stores, etc., because the contents of the medicine (tablets, capsules, etc.) can break through the cover material by applying pressure to the container part of the package with a finger. (For example, patent document 1).

JP 2006-1591 A

  However, if the package is housed in a pocket, bag, bag, etc. of clothing and carried around or a plurality of packages are mixed, the lid material may be inadvertently broken or a hole may be opened. As a result, the drug may react with a large amount of oxygen or moisture to reduce the efficacy. In addition, it is not desirable for the medicine to jump out carelessly, and above all, it is unsanitary.

  The present invention accommodates a PTP package in a pocket, bag, bag, etc. of clothing and carries it with it so that it does not inadvertently tear even when carried around or mixed with a plurality of packages. It is an object of the present invention to provide a press-through pack lid and a press-through pack package using the same so that tablets and capsules as contents can be easily taken out using fingers when intended as in the case of PTP And

  The cover material of the press-through pack of the present invention includes a resin film, an aluminum foil, and a heat bonding layer, and through holes having a substantially polygonal shape in plan view are formed in the resin film. According to this, the aluminum foil is arranged so that the lid material is not inadvertently broken, and when pushing it out with fingers, the contents are easily removed due to the through hole provided in the resin film, that is, the through hole for weakening. It can be taken out.

  The through hole is preferably substantially rectangular in plan view. Manufacture is easy and it is easy to tear from a rectangular corner.

Also, a plurality of through holes are formed, and the average planar view area of one through hole is preferably 0.01 mm ² to ² mm ² . Since a plurality of content storage units are usually provided, it is desirable that at least one through hole is located per one content storage unit. Then, the plan view area of the through-holes mean that the 0.01 mm ² to 2 mm ^2, can be reliably easily taken out with fingers. If the average planar view area of the through holes is less than 0.01 mm ² , destruction may not be easy. Moreover, when it exceeds 2 mm < ² >, when unexpected circumstances overlap, a problem may arise in terms of sealing performance.

Moreover, the PTP package in which the lid material of the present invention is used is configured by thermally bonding any of the above-mentioned lid materials and the flange portion of the container in which the contents storage portion is formed . And defines a lid member of the PTP in the contents storage unit and the heat bonded flange portion, the plan view area of the average of the contents storage unit one position of the lid is preferably set to 5mm ² ~900mm ^2. Thereby, it is possible to secure a sufficient exit area for taking out the contents from the contents storage unit.

Furthermore, the ratio of the average planar view area (Smm ² ) of one content storage portion of the lid material to the average planar view area (Pmm ² ) of one through hole is expressed as S: P = (2.5 to 90000): 1.
As a result, the ratio of the area of the through-hole for weakening to the outlet area for taking out the contents can be made appropriate, so that in any case, the contents can be taken out while ensuring the sealing performance as a lid. Certainly and easily.

  According to the PTP lid material and the like of the present invention, the lid material is prevented from being inadvertently broken, and the contents, such as tablets and capsules, can be easily taken out using fingers when intended. be able to.

It is sectional drawing which shows the PTP package body containing the cover material of PTP in embodiment of this invention. It is a top view for description of the PTP package shown in FIG.

1. Configuration of Lid Material The PTP lid material according to the embodiment of the present invention includes at least a resin film, an aluminum foil, and a thermal bonding layer, and a substantially polygonal through-hole is formed in the resin film.
The resin film is not particularly limited, and a known resin film may be used. For example, polyethylene film, polypropylene film, polyester film, polyamide (nylon) film, (meth) acrylic resin, polyvinyl chloride resin, polystyrene resin, polyvinylidene chloride resin, ethylene-vinyl acetate copolymer Saponified coal, polyvinyl alcohol, polycarbonate resin, polyvinyl acetate resin, acetal resin, and other various resin films can be used. These resin films may be stretched uniaxially or biaxially, or may be unstretched. From the viewpoint of the press-through function, a resin film having an end tear resistance of 70 N or less is particularly preferable, and a resin film having an end tear resistance of 20 N to 60 N is more preferable. Examples of such a resin film include “Tear Fine (registered trademark) TF110” polyester film (end tear resistance warp: 45N, width: 45N) manufactured by Toyobo Co., Ltd. By using a resin film having an end tear resistance of 70 N or less (more preferably 20 N to 60 N), the press-through function can be improved, and the contents can be taken out more smoothly. The end tear resistance can be measured according to JIS C 2318 (sample width: 20 mm).
The thickness of the resin film is preferably about 9 μm to 25 μm. If it is less than 9 μm, the rigidity of the resin film is low, and there is a possibility that drilling described later becomes difficult. On the other hand, if it exceeds 25 μm, the rigidity of the resin film becomes too high and the press-through function may be hindered.

  As the aluminum foil, an aluminum foil used in known PTP can be used, and it is preferable to employ a hard material such as (JIS) 1N30 material, 8021 material, 8079 material having a thickness of about 10 μm to 30 μm. In addition, the lamination of the base material layer and the resin film layer is not particularly limited, but is preferably performed by a dry laminating method using a dry laminating adhesive. If the thickness of the aluminum foil is less than 10 μm, the moisture resistance may be poor, and conversely if it exceeds 30 μm, the press-through function may be impaired.

For the thermal adhesive layer, the thermal adhesive layer (thermal adhesive) used in the well-known PTP can be used. Polypropylene adhesive, vinyl chloride adhesive, vinyl chloride-vinyl acetate copolymer adhesive Etc. can be used. The coating amount of the heat adhesive is preferably a weight after drying at 0.5g ^{/ m 2} ~15g ^/ m 2 approximately. The heat seal conditions at the time of manufacturing the package are usually about 140 ° C. to 260 ° C. and about 1 second to 3 seconds. The cross-sectional shape after sealing may be a continuous uneven (zagged) mesh seal.
The above is the main configuration of the PTP cover material of the present invention, but an anchor coat layer, a deposition layer such as alumina and silica, a primer coat layer, a printing layer, a colored layer, a barcode layer, a key lacquer layer, an overcoat as necessary. A coat layer or the like can also be provided.
The method for laminating each layer is not particularly limited, and may be a known method. For example, a dry lamination method using a polyester or polyurethane adhesive, a wet lamination method, a heat lamination, an extrusion lamination method, gravure printing, roll coating, or the like may be used.
In addition, as a preferable form of a lid | cover material, as shown in FIG. 1, what is necessary is just to provide the resin film 1 which formed the through-hole 1h, the aluminum foil 3 as an intermediate | middle layer (barrier layer), and the heat bonding layer 4 on the container side. . An adhesive 2 may be disposed between the resin film 1 and the aluminum foil 3. A printed layer, a colored layer, a primer coat layer, or the like can be appropriately laminated and interposed in the aluminum foil 3.

2. Drilling process of resin film The resin film used in the present invention is drilled. The processing method is not particularly limited, and the drilling can be performed by laser processing, melt processing with a hot needle, dissolution drilling with a solvent, machining with a blade wheel, or the like. The holes are through holes. The planar view shape is preferably a substantially polygonal shape. Particularly preferred is a substantially rectangular shape. By making the shape of the through hole substantially polygonal, when the contents are taken out, the corner of the polygon becomes the starting point, and the lid material is easily pierced and opened. Furthermore, if the shape of the through hole is substantially rectangular in the manufacturing process, it is suitable for continuous mass production with a blade wheel. In addition, the substantially rectangular shape does not mean a strict rectangle, but means that each side of the rectangle is slightly distorted or each corner may not be exactly 90 degrees. In addition, a scrap piece may be generated during drilling and may remain in a part of the through hole.
The number of the through holes is not particularly limited, but the lid corresponding to the content storage portion when the lid material and the flange portion of the container formed with the content storage portion (pocket) are thermally bonded. It suffices to provide at least one in the material region. In other words, it is sufficient to divide the cover material of the press-through pack into a content storage portion and a thermally bonded flange portion and provide at least one in the region of the content storage portion in the cover material. The upper limit of the number is not particularly limited, but is preferably about 200 per content storage unit.
The size of the through hole is preferably plan view area of one through hole is 0.01 mm ² to 2 mm ^2, more preferably may be a 0.03 mm ² to 0.5 mm ^2. If the area of each through hole in plan view is less than 0.01 mm ^2, it may be difficult to open the lid by pressing through the content, that is, pushing out the contents with a finger. On the other hand, if it exceeds 2 mm ² , the exposed aluminum foil becomes too wide, and the protective effect of the aluminum foil by the resin film may be reduced.
Furthermore, the contents storage unit one viewed area of the cover material ^is preferably from 5mm ² ~900mm 2, may further preferably 25mm ² ~400mm ^2. The ratio of the content storage section 1 a plane view area of the cover member (Smm ²⁾ and the through-hole per the plan view area (P mm ²⁾ is, S: P = (2.5~90000) : 1 Is more preferable, and (50 to 13333): 1 is more preferable. When S: P is less than 2.5: 1, the planar view area of the through hole becomes relatively large, and the protective effect of the aluminum foil by the resin film may be lowered. On the other hand, when S: P is more than 90000: 1, the planar view area of the through-hole is relatively small, the press-through property is lowered, and it may be difficult to take out the contents easily.

3. Structure of package As the container of the press-through pack, the same one as the conventional one can be used. For example, as shown in FIGS. 1 and 2, a known container 20 in which a large number of contents storage portions (pocket portions) P are formed so as to be surrounded by the flange portion F can be used. For example, it can be molded by plug assist molding, vacuum or pressure forming, vacuum / pressure forming, hot pressing, etc., using a resin sheet such as polypropylene or vinyl chloride. Commercially available PTP containers can also be used. After the contents 31 such as tablets and capsules are stored in the pocket P, the opening 10 or the pocket P is covered with the lid 10 and sealed by thermally bonding the flange portion F of the container and the lid 10. The package 50 can be provided. Usually, the conditions for thermal bonding (heat sealing) may be about 100 ° C. to 260 ° C., 0.1 seconds to 3 seconds, and about 0.1 MPa to 0.5 MPa. When covering the opening 10 or the pocket portion P of the container 20 with the lid member 10, the position of the through hole 1 h may be designed in advance so that the through hole 1 h is positioned immediately above the pocket portion P. If a large number of through-holes 1h are provided, the lid can be covered very easily without being aware of the alignment between the pocket portion P and the through-hole 1h. That is, when many through-holes 1h are provided, the through-holes 1h may exist at positions corresponding to the flange portions F. Contents 31 include drugs such as tablets and capsules, chemicals such as fragrances, dehumidifiers, insect repellents, deodorants, confectionery such as chocolate grains and candies, IC chips, semiconductor parts, LEDs, buttons Electronic and electrical parts (products) such as batteries can be accommodated as contents. In FIG. 2, the boundary between the pocket P and the flange portion F is shown by a solid line for the sake of explanation, but in reality, it should appear in the bottom view.

About the example of this invention and the comparative example, the evaluation test of press through property and tear prevention property was done. A total of 12 specimens of the following Invention Examples 1 to 7 and Comparative Examples 1 to 5 were used as test specimens.
(Invention Examples 1 and 6): Through holes shown in Table 1 were drilled in a polyethylene terephthalate film (“Tearfine (registered trademark) TF110” manufactured by Toyobo Co., Ltd.) having a thickness of 14 μm using a blade wheel. Here, the terms in Table 1 are as follows. “Size flow” is the maximum length (maximum diameter) of the through hole in the long direction of the film (corresponding to the rotation direction of the blade wheel), and “Size width” is the width direction of the film (direction perpendicular to the long direction) ) Through-hole maximum length (maximum diameter), “pitch flow” means the pitch of through-holes in the longitudinal direction of the film, and “pitch width” means the pitch of through-holes in the width direction of the film ( (See FIG. 2).
Next, one side of the film and a printed surface of a 20 μm thick aluminum foil (1N30, hard foil, manufactured by Toyo Aluminum Co., Ltd.) with a pattern printed on one side were coated with a polyurethane-based dry laminate adhesive (weight after drying: 3 g / m ² ) After dry lamination using a vinyl chloride thermal adhesive (weight after drying 5 g / m ² ) using a gravure roll on the non-printed surface of the aluminum foil, and dried, Example 1 and 6 lid materials were produced.
(Invention Example 2): A lid material of Invention Example 2 was prepared in the same manner as Invention Example 1 except that the thickness of the aluminum foil was 15 μm.
(Invention Examples 3, 5 and 7): Lids of Invention Examples 3, 5, and 7 were prepared in the same manner as in Invention Example 1, except that the thickness of the aluminum foil was 17 μm.
(Invention Example 4): A lid material of Invention Example 4 was produced in the same manner as Invention Example 1 except that the thickness of the polyethylene terephthalate film was 9 μm (“FE2001” manufactured by Phthamura Chemical Co., Ltd.).
(Comparative Example 1): As a conventional product, an overprint (OP) coat (nitrocellulose-based resin) is applied to the printing surface of a 20 μm-thick aluminum foil (manufactured by Toyo Aluminum Co., Ltd., 1N30, hard foil) with a pattern printed on one side. After drying, it was applied at a weight of 1 g / m ² , and a vinyl chloride thermal adhesive (weight after drying: 5 g / m ² ) was applied to the non-printed surface of the aluminum foil using a gravure roll and dried. A material was prepared.
(Comparative Example 2): As a comparative product, a cover material of Comparative Example 2 was produced in the same manner as in Invention Example 1 except that the shape of the through hole in plan view was an ellipse.
(Comparative Examples 3, 4 and 5): As comparative products, lid materials of Comparative Examples 3, 4 and 5 were prepared in the same manner as in Example 1 of the present invention, except that the shape of the through hole in plan view was elliptical. However, a laser beam was used for drilling the through hole.

The following tests and measurements were performed on the above test specimens.
1. <Production of packaging and press-through test>
The lid materials of Examples 1 to 7 of the present invention and Comparative Examples 1 to 5 and the flange portion of a commercially available container for a press-through pack prepared separately were heat-sealed under the conditions of 180 ° C. × 1 second × 0.3 MPa. In addition, the tablet of diameter 7mm was put beforehand in each content storage part (pocket) of the said container. The pitch of the pocket portion of the container was 16 mm in the flow direction, 15 mm in the width direction, and the size (diameter) of the pocket portion was 10 mm.
As a result of pressing the bottom of the container (the pocket part opposite to the cover material) of each produced package with fingers and testing whether the tablet can break through the cover material and take out the tablet, Invention Examples 1 to 7 and Comparative Example No. 1 was able to take out the tablet smoothly without any problem.
2. <Measurement of puncture strength>
(1)-Evaluation of tear prevention-
A punch having a hemispherical tip and a radius of 0.5 mm is aimed at a portion having no through hole (a portion between the through holes) from the PET surface side (the OP surface in Comparative Example 1) of each lid member at 50 mm / Puncture was performed at a speed of min, and the maximum load required to penetrate the punch was measured. Table 2 shows the average value of n = 6. Inadvertent tearing due to protrusions is assumed, and it is difficult to tear at a puncture strength of 3.0 N or higher, indicating that the tear prevention property is good.
(2)-Evaluation of press-through property-
A punch having a hemispherical tip and a radius of 2.5 mm was stabbed into an arbitrary portion from the thermal adhesive layer surface side of each lid member at a speed of 50 mm / min, and the maximum load required for penetrating the punch was measured. Table 2 shows the average value of n = 6. It is assumed that the contents (tablets) can be easily extruded from the package (press-through property), and it is easy to extrude at a puncture strength of less than 8.5 N, indicating that the press-through property is good.
3. <Appearance evaluation>
The printed character portion was observed from the PET side (Comparative Example 1 is the OP side), and the case where it was read without any problem was evaluated as ◯, and the case where the contrast was poor and difficult to read was evaluated as ×.

  From the above results, the cover of the press-through pack of the present invention has a function of preventing tearing against inadvertent stress from the outside, and when taking out the contents (tablets, capsules, etc.) (press-through by extrusion), It can be seen that it can be taken out as if it were a conventional product. Moreover, the visibility of the appearance (printed surface) is excellent, and it is possible to prevent accidental ingestion due to misreading of print information.

  Although the embodiments and examples of the present invention have been described above, the embodiments and examples of the present invention disclosed above are merely examples, and the scope of the present invention is the implementation of these inventions. It is not limited to the form. The scope of the present invention is indicated by the description of the scope of claims, and further includes meanings equivalent to the description of the scope of claims and all modifications within the scope.

1 resin film, 1h through-hole, 2 adhesive layer, 3 aluminum foil, 4 thermal adhesive layer, 10 lid material, 20 container, 31 contents (tablet etc.), 50 PTP package, F flange, P pocket.

Claims (4)

A cover for a press-through pack,
A resin film, an aluminum foil, and a thermal adhesive layer;
The resin film has a substantially polygonal through hole in plan view , and
It is divided into a content storage part and a flange part to be thermally bonded ,
The ratio of the average planar view area (Smm ² ) of one content storage part to the average planar view area (Pmm ² ) of one through hole is S: P = (2.5 to 90000) A cover material for a press-through pack, characterized by having a ratio of 1   The press-through pack cover material according to claim 1, wherein the through-hole has a substantially rectangular shape in a plan view. The lid of the press-through pack according to claim 1 or 2, wherein a plurality of the through holes are formed, and an average planar view area of the one through hole is 0.01 mm ² to ² mm ^2. Wood. A packaging body in which the lid of the press-through pack according to any one of claims 1 to 3 and a flange portion of a container in which a content storage portion is formed are thermally bonded ,
Wherein the plan view area of the average of the content storage section 1 point in the lid is 5mm ² ~900mm ^2, the press-through pack packaging.

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