JP6000934B2 - Manufacturing method of press-through package - Google Patents

Description

This invention relates to a container sheet accommodating portion, one side of which is an opening is formed, a package sheet such as an aluminum foil and heat-bonding, fabrication of a press-through package to close a housing portion tablets, capsules and the like have been put by the wrapping sheet Regarding the method .

  2. Description of the Related Art Conventionally, a press-through package (hereinafter referred to as PTP when omitted), which is a package of medicine or the like, is stored in a resin container sheet 12 as in PTP 10 shown in FIG. A small tablet 14 or the like is placed in the portion 12a, and the packaging sheet 16 is attached to the flat portion 12b of the container sheet 12 to close the opening of the accommodating portion 12a. Conventionally, this form of package has been widely used for packaging medicinal tablets and capsules. Various information such as characters such as product names such as tablets, characters such as identification numbers, barcodes, decorative patterns, and the like are printed on the packaging sheet 12 as necessary, and also has a function of displaying such various information.

  For example, an aluminum foil is used as the base material of the packaging sheet 16. The packaging sheet 16 using an aluminum foil is suitable for a PTP 10 of a type in which when opening, the tablet 14 in the accommodating portion 12a is strongly pressed from the outside of the accommodating portion 12a to the inner surface of the packaging sheet 16, and the packaging sheet 16 is taken through. Yes. When affixing the packaging sheet 16 to the container sheet 12, for example, the heat seal layer provided on one surface of the packaging sheet 16 is brought into contact with the flat portion 12b of the container sheet 12, and the other surface of the packaging sheet 16 is contacted. The heat seal layer is heated from the side of the heat-resistant coating layer provided on the surface, and the heat seal layer is welded to the flat portion 12b.

  Conventionally, as a packaging sheet for PTP using an aluminum foil as a base material, as disclosed in Patent Document 1, a white colored layer covering one surface of an aluminum foil, and a barcode portion on the surface of the white colored layer The ink layer represented, the overprint layer covering the white colored layer and the ink layer, the back printed layer printed on the other side of the aluminum foil, and the heat covering the other side of the aluminum foil and the surface of the back printed layer There is a packaging sheet with an adhesive layer. In this packaging sheet, when the surface on the overprint layer side is heated, the thermal adhesive layer is thermally bonded to the other accommodation sheet, and the opening of the pocket portion of the accommodation sheet is closed. The barcode portion printed on the white colored layer can be confirmed from the overprint layer side and is read by a barcode reader or the like. The white colored layer contains a predetermined amount of white pigment and serves to make the contrast with the barcode portion clear so that the barcode reader can easily read the content of the barcode portion.

  Further, as disclosed in Patent Document 2, a coating layer that is a resin layer containing a pigment or a dye and covers one surface of an aluminum foil, a first printing layer positioned on the surface of the coating layer, and a coating A thermal adhesive layer covering the layer and the first printed layer, a second printed layer printed on the other side of the aluminum foil, and an overcoat layer covering the other side of the aluminum foil and the surface of the second printed layer And packaging materials. In this packaging material, when the surface on the overcoat layer side is heated, the thermal adhesive layer is thermally bonded to the other storage body, and the opening of the pocket portion of the storage body is closed. The first printed layer on the surface of the coating layer can be visually recognized from the thermal adhesive layer side through the container.

JP 2008-174302 A JP 2007-253949 A

  In the case of PTP for packaging medicinal tablets, capsules, etc., the majority of the conventional packaging sheets are aluminum-based packaging sheets, which have an appearance in which the metallic color tone of the aluminum ingot is exposed. The metallic color of this aluminum bullion gave patients a sense of security and a sense of security using existing products.

  However, in the case of the packaging sheet of Patent Document 1, there is a problem that the white color tone of the white colored layer covering the aluminum foil is too strong and the metallic color tone is lost. Moreover, the coating layer of the packaging material of patent document 2 reinforces aluminum foil, and does not improve the visibility of the printed layer.

The present invention has been made in view of the above-described background art, and an object thereof is to provide a method for producing a press-through package with good visibility of an information printed layer without impairing the metallic color tone of a packaging sheet. To do.

The present invention relates to an aluminum foil as a base material, a cloudy color print layer provided on a glossy surface as one surface of the aluminum foil, and an information print layer provided on a part of the surface of the cloudy color print layer. A packaging sheet comprising: a transparent heat-resistant coating layer covering the cloudy color printing layer and the information printing layer; a heat seal layer covering the other surface of the aluminum foil; parts provided a container sheet formed is a method of manufacturing a press-through package to close the opening of the receiving portion of the container sheet by pasting the package sheet in the plane of the container sheet, said opaque In the color printing layer, 10 to 15% by mass of titanium oxide pigment is uniformly diffused to absorb a part of incident light from the outside and reflect the light reaching the glossy surface of the aluminum foil. A part of light is transmitted, and the heat-resistant coating layer is formed by adding a matting agent, which is a powder having a particle size larger than the thickness of the resin layer of the heat-resistant coating layer, to a main agent that is a synthetic resin. In the glossy surface side, in a state where the heat-resistant coating layer is formed, a part of incident light incident from the heat-resistant coating layer side passes through the cloudy color printed layer and reaches the aluminum foil, and its reflection A part of the light can be transmitted through the heat-resistant coating layer, and the incident light and the reflected light are scattered by the matting agent, and when the packaging sheet is attached to the flat portion of the container sheet, said heat sealing layer is facing the side opening is formed of said container sheet superposed on the flat portion, by heating the surface of said refractory coating layer side, the wrapping sheet to the container sheet Adhered to a manufacturing method of a press-through package to close the opening of the receiving portion by the wrapping sheet.

The white turbid printing layer is coated with 0.8 to 2.6 g / m ² of coating resin containing 10 to 15% by weight of white ink and 2.1 to 3.2% by weight of white pigment. It is formed by coating with. Furthermore, the cloudy color printed layer is formed by using a resin as a main agent that is a vinyl chloride resin, a vinyl chloride-vinyl acetate copolymer, a modified polyolefin resin, or an epoxy resin.

  The matting agent is silica or barium, and is preferably blended at a ratio of 2 to 5% by mass with respect to the main component of the heat-resistant coating.

As the aluminum foil, one having the glossy surface on the one surface and the matte surface on the other surface is used . The information print layer is printed with information including a barcode.

The thickness of the resin layer of the heat-resistant coating layer is 1.6 to 2 μm, the matting agent is a powder having a particle size of 2 to 3 μm, and a part of the matting agent is from the resin layer of the heat-resistant coating layer. It is applied in a protruding state .

The method for producing a press-through package invention, regular reflection light and diffuse reflection light is suppressed as noise light from the shiny surface of the aluminum foil by milky printed layer of the package sheet, not easy to visually recognize information of the information printed layer It is possible to manufacture a packaging sheet and provide a press-through package with good visibility of information provided on the packaging sheet. Moreover, moderately absorbed cloudy printing layer light irradiated from the outside, since the reflected and metallic hue of the aluminum foil appeared moderate press-through can give a sense of security and High texture to a user such as a patient Package can be provided. In particular, in the case of a press-through package in which a barcode is provided on the information printing layer, a press-through package that can accurately read printed information can be easily manufactured by a barcode reader.

It is sectional drawing which shows one Embodiment of the packaging sheet of a press-through package. It is sectional drawing which shows embodiment of the packaging sheet of the press through package of this invention. It is sectional drawing explaining the basic composition of a press-through package.

  Hereinafter, one embodiment of a packaging sheet used for PTP will be described with reference to FIG. This packaging sheet 20 is a packaging sheet used in place of the conventional packaging sheet 16 in the PTP 10 of FIG.

  As shown in FIG. 1, the packaging sheet 20 uses an aluminum foil 22 as a base material. As the aluminum foil 22, a hard or soft aluminum foil having a thickness of about 10 to 30 μm is used so that the aluminum foil 22 is easily broken when taking out the solid matter 14 such as a tablet accommodated in the container sheet 12. In addition, aluminum foil used for PTP has a glossy surface (mirror surface) on one side and a matte surface (matte surface) on the other, a glossy surface (mirror surface) on both sides, and both sides There are three types, both of which have a matte surface (matte surface). This aluminum foil 22 has one surface that is glossy and the other surface is matte.

  The glossy surface side of the aluminum foil 22 is covered with a cloudy color print layer 24. The cloudy color printing layer 24 can be formed by applying a liquid coating resin, which is a mixture of a printing diluent, and an ink containing a white pigment to the surface of the aluminum foil 22 and drying it. . As the medium, for example, a material obtained by diluting a solid content obtained by mixing an amino resin for promoting molecular crosslinking with a vinyl chloride resin as a main ingredient with a solvent such as an appropriate amount of thinner is used. The resin used as the main ingredient of the medium may be a vinyl chloride-vinyl acetate copolymer, a modified polyolefin resin or an epoxy resin instead of the vinyl chloride resin, and is used as the main ingredient of the first information printing layer 26 described later. It is desirable to select the same resin. As the ink containing a white pigment, an ink obtained by diluting a solid content obtained by blending a titanium oxide powder or the like that becomes a white pigment into a composition similar to the solid content of a medium with an appropriate amount of a solvent such as thinner is used. The coating resin for forming the cloudy color print layer 24 contains 2.1 to 3.2% by mass of a white pigment, and is usually a ratio of 85 to 90% by mass of medium and 15 to 10% by mass of white ink. It is blended with.

When the coating resin is applied to the surface of the aluminum foil 22, the coating amount is about 0.8 to 2.6 g / m ² and the drying condition is 5 to 10 sec at 180 to 210 ° C. It is desirable to do. When the applied coating resin was dried, the solvent such as thinner contained in the coating resin was volatilized, only the solid content of the medium and ink remained, and 10 to 15% by mass of the titanium oxide pigment was diffused substantially uniformly. A cloudy color print layer 24 is formed.

  On the surface of the cloudy color print layer 24, a first information print layer 26 on which characters such as product names and identification numbers, barcodes, decorative patterns and the like are represented is provided. The first information printing layer 26, like the cloudy color printing layer 24, is printed by a gravure coating method or the like, and dried by using a vinyl chloride resin as a main ingredient, for example, a black pigment or a brown pigment. Formed by.

The surfaces of the cloudy color print layer 24 and the first information print layer 26 are covered with a heat resistant coating layer 28. Since the heat-resistant coating layer 28 is heated when the packaging sheet 16 is thermally bonded to the container sheet 12, for example, even if a pressure of 3 kg / cm ^{2 is applied} for 2 sec with a 190 to 230 ° C. heat seal bar, Heat resistance that satisfies the condition that the surface state does not change such as discoloration, carbonization, and stickiness is required. Therefore, the heat-resistant coating layer 28 is formed using a transparent coating agent mainly composed of epoxy resin, nitrocellulose, or acrylic resin.

The back surface of the aluminum foil 22 is covered with a heat seal layer 30. As shown in FIGS. 1 and 3, when the packaging sheet 20 is thermally bonded to the flat surface portion 12 b so as to cover the accommodating portion 12 a of the container sheet 12, the heat seal layer 30 is overlapped and abutted on the flat surface portion 12 b. A material that is a layer to be welded and can be favorably bonded to the container sheet 12 and the aluminum foil 22 is selected. Good adhesion means a peel strength of 0.6 to 1 kg / m ² or more when heat-bonded by applying pressure of ² to 3 kg / cm ² for 1 sec using a heat seal bar at 140 to 160 ° C. It is preferred that For example, if the material of the container sheet 12 is a polyvinyl chloride resin (PVC resin), a polypropylene resin (PP resin), or a polyethylene terephthalate resin (PET resin), the heat seal layer 30 is the same resin as the container sheet 12 or It is preferable to use a resin coating agent mainly composed of a mixture of specific resins.

In the PTP manufacturing method of this embodiment, when the packaging sheet 20 is affixed to the flat portion 12b of the container sheet 12, the heat seal layer 30 faces the side on which the opening of the container sheet 12 is formed and the flat portion 12b This is a method for manufacturing a press-through package in which the packaging sheet 20 is thermally bonded to the container sheet 12 by overlapping and heating the surface on the heat-resistant coating layer 28 side, and the opening of the accommodating portion 12a is closed by the packaging sheet 20. If the container sheet 12 and the heat seal layer 30 are transparent, a second information printing layer 27 representing a decorative pattern or the like is provided on the back surface of the aluminum foil 22, and the container sheet 12 of the PTP 10 is provided. It may be made visible from the side.

  As described above, in the PTP of this embodiment, the cloudy color print layer 24 in which the pigment of 10 to 15% by mass of titanium oxide is diffused substantially uniformly is formed on the packaging sheet 20, and the front side of the aluminum foil 22 is formed. Reflection of the glossy surface is suppressed, the first information printing layer 26 is easily visible, and even when a barcode is provided, it can be read accurately by a barcode reader. Moreover, the white turbid printing layer 24 appropriately absorbs incident light from the outside, and part of the reflected light that has reached the aluminum foil 22 is also transmitted, so that the metallic color tone of the aluminum foil 22 is moderate. Appearance can give a sense of security and high quality to users such as patients.

  In addition, the cloudy colored printed layer 24 of the packaging sheet 20 uses a vinyl chloride resin, a vinyl chloride-vinyl acetate copolymer, a modified polyolefin resin, or an epoxy resin as a main agent, and an amino resin is blended for promoting the cross-linking of molecules of the main agent. Titanium oxide is used as a white pigment, and since both are widely used as pharmaceutical packaging materials and have proven results in quality and reliability, they are safe as PTP10 for packaging medicinal tablets and capsules. It can be used with care.

Next, an embodiment of the PTP according to the present invention will be described with reference to FIG. Here, the same structure as the packaging sheet 20 of the said embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. The packaging sheet 32 of this embodiment is provided with a heat-resistant coating layer 34 having fine irregularities on the surface 34a, instead of the heat-resistant coating layer 28 of the packaging sheet 20 of the above-described embodiment. Other configurations and the PTP manufacturing method are the same as those of the packaging sheet 20.

  The heat-resistant coating layer 34 has a particle size larger than the thickness (for example, 1.6 to 2 μm) of the resin layer 29 corresponding to the heat-resistant coating layer 28 of the above embodiment in the configuration of the heat-resistant coating layer 28 of the above-described embodiment. A matting agent which is a powder (for example, 2 to 3 μm) is added. The matting agent is preferably silica, barium, or the like, and is preferably blended at a ratio of about 2 to 5% by mass with respect to the main resin, epoxy resin, nitrocellulose, or acrylic resin.

  The heat-resistant coating layer 34 forms fine irregularities on the surface 34 a by projecting a part of the matting agent from the resin layer 29, thereby scattering incident light and reflected light, and the first information printing layer 26. Improve visibility. However, if the effect of the matting agent is too strong, the color tone of the pigment of the first information printing layer 26 is difficult to be reproduced, so that the visibility of the first information printing layer 26 is improved by the cloudy color printing layer 24, In order to further improve the visibility, a heat resistant coating layer 34 to which a small amount of matting agent is added is provided.

10 Press-through package (PTP)
DESCRIPTION OF SYMBOLS 12 Container sheet | seat 12a Housing | casing part 12b Plane | planar part 20 and 32 Packaging sheet 22 Aluminum foil 24 Cloudy color printing layer 26 First information printing layer 27 Second information printing layer 28 and 34 Heat-resistant coating layer 29 Resin layer 30 Heat seal layer

Claims (7)

An aluminum foil as a base material, a cloudy color printed layer provided on a glossy surface as one surface of the aluminum foil, an information printed layer provided on a part of the surface of the cloudy color printed layer, and the cloudiness A packaging sheet comprising a transparent heat-resistant coating layer covering the color printing layer and the information printing layer, and a heat seal layer covering the other surface of the aluminum foil;
A container sheet accommodating unit tablets and capsules are accommodated are formed is provided,
A method for producing a press-through package that closes an opening of the container portion of the container sheet by attaching the packaging sheet to a flat portion of the container sheet,
The white turbid printing layer has 10-15% by mass of titanium oxide pigment uniformly diffused , absorbs a part of incident light from the outside, and reflects reflected light that reaches the glossy surface of the aluminum foil. Partially penetrated,
The heat-resistant coating layer is formed by adding a matting agent, which is a powder having a particle size larger than the thickness of the resin layer of the heat-resistant coating layer, to a main agent that is a synthetic resin.
On the glossy surface side of the aluminum foil, with the heat-resistant coating layer formed, a part of incident light incident from the heat-resistant coating layer side passes through the cloudy color printed layer and reaches the aluminum foil. In addition, a part of the reflected light can be transmitted through the heat-resistant coating layer, and the incident light and the reflected light are scattered by the matting agent.
When the packaging sheet is affixed to the flat portion of the container sheet, the heat seal layer faces the side where the opening of the container sheet is formed and overlaps the flat portion, and the heat-resistant coating layer side surface A method of manufacturing a press-through package, wherein the packaging sheet is thermally bonded to the container sheet by heating and the opening of the housing portion is closed by the packaging sheet. The white turbid printing layer is coated with 0.8 to 2.6 g / m ² of coating resin containing 10 to 15% by weight of white ink and 2.1 to 3.2% by weight of white pigment. The press-through package according to claim 1, wherein the press-through package is formed by coating. 3. The method for producing a press-through package according to claim 2, wherein the white turbid printing layer is formed by using a resin as a main ingredient that is a vinyl chloride resin, a vinyl chloride-vinyl acetate copolymer, a modified polyolefin resin, or an epoxy resin. The method for producing a press-through package according to claim 2, wherein the matting agent is silica or barium and is blended at a ratio of 2 to 5% by mass with respect to the main component of the heat-resistant coating. The aluminum foil, the one surface is shiny surface, The method of claim 2, wherein the press-through package to use those wherein the other surface is in matte surface. The method for manufacturing a press-through package according to claim 4, wherein the information print layer is printed with information including a barcode. The thickness of the resin layer of the heat-resistant coating layer is 1.6 to 2 μm, the matting agent is a powder having a particle size of 2 to 3 μm, and a part of the matting agent is from the resin layer of the heat-resistant coating layer. The manufacturing method of the press through package of Claim 4 which coats in the state which protruded.

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