JPH11334756A - Semi-material for paper container, production of semi-material for paper container, paper container packaging material and paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce inexpensively a packaging material and a paper container using no expensive printing ink material, to realize good metal-like outer appearance in luster, shininess, color, etc., to realize superior adhesion between a metallic deposited face and a paper base material and between a plastic film face and an ink layer, and to eliminate separation between the interfaces of the packaging material or the paper container during a production process or distribution. SOLUTION: This packaging material for a paper container includes at least a semi-material for a paper container having metallic luster laminating from inside to outside in the order of a paper base material layer 4, an adhesive agent layer 3, a transparent polyester film layer 1 having a metallic deposited film 2a on both sides, an ink layer 5 provided on the outside surface of the semi-material by printing, and an outside resin layer 6 having sealing properties formed on the outside surface of the ink layer. It is preferably provided with a metallic deposited layer 2 applied with an adhesion reinforcing film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semi-material for a paper container, a method for producing the semi-material for a paper container, a packaging material for a paper container using the semi-material, and a paper container using the packaging material. More specifically, a continuous paper packaging material is formed into a tube in the longitudinal direction, and fruit juice is contained in the tubular packaging material.
Brick-shaped paper obtained by filling a filling material such as tea or liquid dairy product, applying a horizontal line seal at predetermined intervals in the transverse direction of the tubular packaging material, and cutting the packaging material along the horizontal line sealing portion Cutting the packaging container and paper packaging material into a predetermined shape,
A gable-top (roof-type) paper packaging container obtained by obtaining blanks sealed in the vertical direction of the container, sealing the bottom of the blanks, then filling the liquid product from the upper opening, and sealing the upper portion. Also, the present invention relates to a packaging material used for the container, a semi-material used for the packaging material, and a method for producing the semi-material.

[0002]

2. Description of the Related Art Packaging containers for milk, juice or other beverages are formed, for example, by forming a foldable wrapping material on a paper / plastic laminate into a tube by means of a longitudinal vertical line seal. The filling material is filled in the packaging material formed into a shape, a horizontal line seal is applied in the transverse direction of the tubular packaging material, and firstly, the primary shape is formed into a cushion shape or a pillow shape. Cut individually at regular intervals,
Fold along the fold line to form the final shape. Examples of the final shape include a brick (parallel hexahedron), a polygonal prism exceeding a square, a hexagonal prism, an octagonal prism, a ten-prism prism, and a tetrahedron shape having four triangular surfaces.

Further, in the case of a gable-top (roof type) paper packaging container, the paper packaging material is cut into a predetermined shape, blanks sealed in the vertical direction of the container are obtained, and the bottoms of the blanks are sealed in a filling machine. It is obtained by filling milk, juice or other beverage filling material from the upper opening later and sealing the upper part. On these packaging materials, the appearance design of the packaging container product is printed on the surface.

[0004] The packaging material of the above-mentioned paper packaging container is usually composed of an outermost layer of low-density polyethylene (LDPE) / an ink layer by printing / paper base layer / a single layer or a plurality of innermost layers of low-density polyethylene (LDPE). , Printing ink layer / low-density polyethylene (LDPE) outermost layer / paper substrate layer / single-layer or multiple layers of low-density polyethylene (LDPE) innermost layer,
It has a layer structure such as an outermost layer of low density polyethylene (LDPE) / ink layer by printing / paper base layer / adhesive layer / aluminum foil layer / a single layer or a plurality of innermost layers of low density polyethylene (LDPE). .

[0005]

When a metallized (metal-like) appearance is applied to a conventional packaging container product, a metal-like ink is applied to the surface of the packaging material. However, printing with metal-like inks requires the use of expensive printing ink materials.

On the other hand, a plastic film (eg, aluminum) deposited on one side with a metal (eg, aluminum)
OPP film) is laminated on a paper substrate with low-density polyethylene (LDPE) extruded from an extruder, and printed with an ink on the OPP film surface to obtain a metallized (metal-like) appearance packaging material. It has been proposed to mold the container. However, the metallic appearance such as gloss, shine, and color is not always good. Moreover, the adhesiveness between the metal-deposited surface and the paper substrate, the adhesiveness between the plastic film surface and the low-density polyethylene (LDPE) layer, and the adhesiveness between the plastic film surface and the ink layer are not good. Instead, a gap may be formed at the interface between them during the manufacturing process or during the distribution process, that is, there may be a problem of peeling.

[0007] The above-mentioned single-sided metal deposition film is used for
This is because it has been said that there is a problem in the printing processability of the metal deposition film. That is, when printing directly on the metal deposition surface,
The slight deviation of the angle between the rollers of the printing machine and the metal deposition surface causes a rubbing phenomenon that rubs the deposition surface and damages the metal thin film on the deposition surface. It is known that the temperature decreases through the process. Further, the decrease in the metallic gloss in the printing process is caused not only by the rubbing phenomenon but also by the chemical reaction influence of various assistants such as a surfactant, a dispersant, and a pH adjuster added to the printing ink. This phenomenon is caused by the existence of many voids in the metal deposition.

Conventionally, when a metal-deposited film is laminated as a packaging material, a metal-deposited film is formed only on the inner side in order to prevent a decrease in the metallic gloss of the metal-deposited layer and to avoid a direct printing on the metal-deposited surface. This has only been done using a single-sided metallized film with a layer. However, even if the above layer configuration is adopted, the adhesiveness between the plastic film surface and the low density polyethylene (LDPE) layer and the adhesiveness between the plastic film surface and the ink layer are not improved. For this reason, a gap may be formed at the interface during the manufacturing process or during the distribution process, and there is a possibility that a defective seal may occur after the paper container is formed.

The present invention has been made on the basis of the above-mentioned background, and an object of the present invention is to make it possible to manufacture packaging materials and paper containers at low cost without using an expensive printing ink material, and to obtain gloss, Brightness, good metal-like appearance such as color, and the adhesion between the metal deposition surface and the paper substrate, and,
Excellent adhesiveness between the plastic film surface and the ink layer, and a method for producing semi-materials for paper containers and semi-materials for paper containers, in which there is no peeling between interfaces between packaging materials and paper containers during the manufacturing process or during the distribution process, An object of the present invention is to provide a packaging material for a paper container and a paper container.

[0010]

The above object is achieved by the present invention. That is, the semi-material for a paper container according to the present invention is formed by laminating each constituent layer of a paper base material layer, an adhesive layer, and a transparent polyester film layer having a metal deposition layer on both sides in the above order from the inside to the outside. It becomes.

[0011] In a preferred embodiment of the present invention, an adhesion reinforcing film is applied to at least the inner surface of the inner metal deposition layer,
Alternatively, an adhesion reinforcing film is applied to the surfaces of the metal deposition layers on both sides.

In another preferred embodiment of the present invention, the metal-deposited layer and the transparent polyester film layer are formed by depositing metal aluminum on both sides of a polyester film.

The method for producing a semi-material for a paper container according to the present invention includes the following steps. (A) a step of drawing a paper base material from a base paper roll; (b) drawing the film from a roll of a metal aluminum double-sided vapor-deposited polyester film composed of a transparent polyester film layer having a metal vapor-deposited layer laminated on both sides; A step of laminating the substrate surface with an adhesive.

In a preferred embodiment of the present invention, an adhesion-enhancing film is applied to the surface of the metal-deposited layer, and a paper substrate surface is laminated on the adhesion-enhancing film surface via an adhesive.

The packaging material for a paper container according to the present invention comprises a paper base layer, an adhesive layer, and a transparent polyester film layer having a metal-deposited layer on both sides, which are laminated in the above order from the inside to the outside. And at least an ink layer provided by printing on the outer surface of the semi-material and an outer resin layer having a sealing property formed on the outer surface of the ink layer.

In a preferred embodiment according to the above invention, at least the inner surface of the metal deposition layer on the inner side is coated with an adhesion enhancing film, or the surface of the metal deposition layer on both surfaces is coated with the adhesion enhancing film.

In a further preferred aspect according to the present invention, the semiconductor device further includes an inner resin layer applied to an inner surface of the semi-material.

In a preferred embodiment according to the present invention, a barrier layer is provided between the semi-material and the inner resin layer or on the inner surface of the inner resin layer, and the barrier layer is made of aluminum foil, inorganic oxide thin film, ethylene vinyl alcohol, or the like. It comprises at least one selected from a copolymer layer (EVOH layer), a nylon layer, a polyvinylidene chloride film, and a polyvinylidene chloride coated film.

The paper container according to the present invention is a metal container comprising a paper base material layer, an adhesive layer, and a transparent polyester film layer having a metal-deposited layer on both sides laminated in the above order from the inside to the outside. A semi-material for a paper container having gloss, an ink layer formed by printing provided on the outer surface of the semi-material, an outer resin layer having a sealing property formed on the outer surface of the ink layer, and provided inside the semi-material. Formed from a packaging material for a paper container, including at least an inner sealing resin layer.

[0020]

The semi-material for a paper container, the method for producing a semi-material for a paper container, the packaging material for a paper container, and the paper container according to the present invention having the above-described structure operate and operate as follows.

In the present invention, the semi-material for a paper container comprises a paper base material layer, an adhesive layer, and a transparent polyester film layer having a metal-deposited layer on both surfaces, which are laminated in the above order from the inside to the outside. It consists of becoming. Since a polyester film having excellent transparency and various mechanical properties is used, a metal-like appearance such as metal-like luster, shine, and color due to metal evaporation deposited on the surface of the polyester film is imparted to the paper container appearance.

Conventionally, the metal-deposited surface was considered to be a flat surface without any irregularities, and it was assumed that the printing ink layer, the plastic film or the paper layer did not easily adhere to the surface. The surface has numerous irregularities, micropores such as voids, voids, and cavities, and a printing ink with fluidity and adhesives are used for these fine irregularities, micropores, voids,
Since it penetrates into the cavities and solidifies, it greatly contributes to adhesiveness.
Thus, this metallized surface improves the adhesion to the outer printing ink or melt lamination resin (LDPE) and the adhesive, and the improved adhesion allows the adhesive to adhere to the inner paper substrate. Improve the performance further.

In a preferred embodiment of the present invention, an adhesion reinforcing film is applied to the surface of the metal deposition layer. This adhesion-enhancing film penetrates into the fine irregularities, micropores, voids, and cavities on the metal-deposited surface, solidifies, and firmly fixes the adhesion-enhancement film to the metal-deposited surface, and converts it to many materials for the adhesion-enhancement film. Promotes adhesion with the material to be bonded (printing ink layer, adhesive layer) due to its affinity for As a result, the adhesiveness between the metal-deposited surface and the paper base material and the adhesiveness between the plastic film surface and the ink layer can be increased, and the paper container is manufactured during the paper packaging container manufacturing process or during the distribution process. Can be prevented from being peeled off at the interface between the seal portion of the paper package and the seal portion between the paper packaging container and the straw.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described. The semi-material for a paper container according to the present invention comprises a paper base material layer, an adhesive layer, and a transparent polyester film layer having a metal-deposited layer on both sides, each of which is laminated in the above order from the inside to the outside. It is.

The paper substrate that can be used in the present invention is usually made of kraft pulp and requires excellent strength and low water absorption. The types include bleached paper (FBL), unbleached paper (UBL), bleached and unbleached laminated paper (DUPLEX), clay-coated paper and multilayer laminated paper (MB). Either may be used.

The adhesive layer that can be used in the present invention is, for example, an ethylene methacrylic acid copolymer (E) having adhesiveness to metal by extrusion lamination.
These film-forming layers are laminated as an adhesive layer using a synthetic resin such as MAA) or ionomer (IO). It is preferable to use an adhesive layer having a thickness of about 10 to 50 μm. Preferably, the adhesive layer is an ethylene methacrylic acid copolymer having a layer thickness of 10 μm to 18 μm.

The adhesion-enhancing film used in the preferred embodiment of the present invention is formed, for example, by coating a non-electrolyte aqueous solution, and can be selected from polyethylene glycol, sucrose, polyvinyl alcohol, chitins and the like.
The solvent is more preferably a water / alcohol mixed solution, preferably a 1: 1 mixed solution, rather than water alone, due to the ease of wetting. The reinforced film has an effect of improving the abrasion resistance of the vapor-deposited film in addition to the improvement of the adhesiveness, whereby the printing processability is enhanced, and it is possible to directly print on the vapor-deposited film. For example, polyvinyl alcohol is most preferable as the substance used for the adhesion reinforcing film. The polyvinyl alcohol has a preferred range of a saponification degree of 88% or more and a polymerization degree of 1000 or less from the viewpoint of wettability to a vapor deposition surface and an effect of enhancing adhesion. The thickness of this film is preferably 0.02-0.2 μm
Is good.

The polyester film layer which can be used in the present invention has a layer thickness of 8 to 30 μm, preferably 8 to 16 μm. Polyester includes polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalephthalate and the like. In the present invention, the polyester film is transparent so that the metallic luster can be seen from the outside of the container. The film may be added with additives such as an antistatic agent, a lubricant, an ultraviolet absorber, etc. according to the purpose, and the surface may be modified by corona treatment, glow treatment, anchor coating treatment or the like. It may be done. In the present invention, the metal-deposited layer and the polyester film layer resin layer are formed by depositing metal, more preferably, aluminum on a polyester film. Various methods can be used for the method of metal deposition and the thickness of the deposited layer. For example, as an evaporation method, a vacuum evaporation method, a sputtering method, a plasma method, or the like is used.

The packaging material for a paper container according to the present invention comprises the above-mentioned semi-material, an ink layer provided on the outer surface of the semi-material by printing, and an outer resin layer having a sealing property formed on the outer surface of the ink layer. And at least
Inks are water-based or oil-based inks for flexographic printing,
There are oil-based inks for gravure printing and curable inks for offset printing.

[0030] In a preferred embodiment of the packaging material for a paper container of the present invention, the packaging material includes an inner resin layer applied to an inner surface of the semi-material. This resin layer is, for example, polyethylene,
Polyolefin resins such as polypropylene and ethylene copolymers. In addition to the low-density polyethylene (LDPE) conventionally used for the innermost layer, resistance to contents (oil resistance, acid resistance, penetration resistance, etc.) And low-density polyethylene (LLDPE), coextruded films containing medium-density polyethylene and polyethylene.

In a preferred embodiment of the packaging material for a paper container of the present invention, a barrier layer is provided between the semi-material and the inner resin layer or on the inner surface of the inner resin layer. The barrier layer is made of at least one selected from an aluminum foil, an inorganic oxide thin film, an ethylene vinyl alcohol copolymer layer (EVOH layer), a nylon layer, a polyvinylidene chloride film, and a polyvinylidene chloride coated film.
Here, as the vapor-deposited film of the inorganic oxide as the barrier layer, for example, a thermoplastic resin film having a thickness of about 10 to 30 μm of polyolefin, nylon, polyester, polyvinyl alcohol, or the like is used for silicon oxide, tin oxide, or oxide. Thickness of 100 to 5000 by inorganic oxide such as zinc, indium oxide, titanium oxide, aluminum oxide
A thin film layer having a thickness of preferably about 200 to 1,000 is formed by vacuum deposition, sputtering, chemical vapor deposition, plasma chemical vapor deposition (PCVD), or the like.

The paper container according to the present invention comprises the above-mentioned semi-material, an ink layer provided on the outer surface of the semi-material by printing, an outer resin layer having a sealing property formed on the outer surface of the ink layer, and a semi-material. It is formed from a packaging material for paper containers, including at least an inner sealing resin layer provided inside the material.

In the liquid food filling field of the present invention, a continuous paper wrapping material is formed into a tube in the longitudinal direction, and the tube wrapping material is filled with an object to be filled such as fruit juice, tea, and liquid dairy product. A brick-shaped paper packaging container obtained by applying a horizontal line seal at predetermined intervals in the transverse direction of the tubular packaging material and cutting the packaging material along the horizontal line sealing portion, and a paper packaging material obtained by a predetermined method. A gable-top shape (roof type) obtained by cutting into a shape, obtaining a blank sealed in the vertical direction of the container, sealing the bottom of the blank, filling the filling of the liquid product from the upper opening, and sealing the upper portion Paper packaging containers.

Next, a method for producing a semi-material for paper containers according to the present invention will be described. This manufacturing method includes the following steps. (A) drawing a paper base material from a base paper roll and applying an anchor agent to the surface of the paper base material as necessary; (b) a metal-deposited polyester film roll comprising a metal-deposited layer and a polyester film layer resin layer; Step of drawing out the film, laminating the metal vapor-deposited layer surface and the paper base material (anchor agent applied) surface with an adhesive, and further, if necessary,
(C) performing a corona discharge treatment on the surface of the polyester film layer of the obtained laminate to form a corona discharge treatment layer, and (d) applying an anchor material to the surface of the corona discharge treatment layer and applying an anchor agent. Forming a layer;

As a method of forming the above-mentioned layer, for example, there are a dry lamination method, a wet lamination method, a hot lamination method, an extrusion lamination method, a co-extrusion lamination method and the like, and these are applied according to the characteristics thereof. When a resin layer or an adhesive layer is formed, an extrusion lamination method or a sandwich extrusion lamination method that is advantageous in terms of cost is used. As described above, as the resin layer and the adhesive layer, for example, polyethylene, polypropylene, polyolefin resin such as ethylene copolymer,
An ionomer resin or the like is generally used, and a polyolefin-based resin is preferred in terms of cost. In a preferred embodiment of the method for producing a semi-material for a paper container according to the present invention, the metal-deposited layer surface and the paper base material (anchor agent-coated) surface are laminated by an adhesive supplied from an extruder.

[0036]

EXAMPLES The present invention will be specifically described with reference to the following examples. Using a normal gravure coater, polyvinyl alcohol (PVA2 manufactured by Kuraray Co., Ltd.) was applied to both sides of a vapor-deposited surface of an aluminum-deposited PET film in which metal aluminum was vapor-deposited on both sides of a PET film having a thickness of 12 μm.
05: a saponification degree of 88, a polymerization degree of 700), a 4 wt% solution of water / alcohol 1: 1 was applied to a solid content thickness of 0.1 μm. A roll of a PET film having a double-sided aluminum deposition having an adhesion reinforcing film, for example, having a basis weight of 320 to 40
Prepare a roll of 0 g / m ² paper substrate. The paper substrate is pulled out of the paper substrate roll and fed to a laminating station.

On the other hand, a roll of a double-sided aluminum-deposited PET film having an adhesion-enhancing film is also conveyed to the same laminating station from the direction opposite to the paper substrate. This laminate
At the station, the surface of the paper substrate and the adhesion-enhanced film deposition surface of the aluminum-deposited PET film face each other, and between them,
The layers are laminated with an ethylene methacrylic acid copolymer (EMAA). The layer thickness of this EMAA is 15 μm. By this step, a laminate of a laminated structure: paper substrate 4 / EMAA3 / adhesion-enhanced film aluminum-deposited layer 2 / PET film layer 1 / adhesion-enhanced film aluminum-deposited layer 2 is obtained. Subsequently, the outer surface of the laminate is subjected to corona discharge treatment as necessary, and then, if necessary, an anchor agent is applied to the film (corona discharge treatment) surface, and is wound up by a winder. , Get a semi-material.

The roll of semi-material is conveyed to a printing machine, and characters and pictures are printed on the surface of the metal deposition layer on the outside of the semi-material by the offset printing method, and a hole for a straw or spout is formed at a predetermined position. Open and further provide a crease for forming the final paper container shape. The laminated body after printing has a layer structure of paper base 4 / EMAA3 / adhesion strengthening film aluminum vapor deposition layer 2 / PET film layer 1 / adhesion reinforcement film aluminum vapor deposition layer 2 / ink layer 5.

The laminated body after printing is wound again into a roll and sent to a laminator. In the laminator, the low-density polyethylene supplied to the extruder is extruded from the T-die at a high temperature, and the outermost layer of the low-density polyethylene is laminated on the outer surface of the ink layer. An aluminum foil of a low-density polyethylene layer is laminated by a method, and two innermost low-density polyethylene layers are formed on the inner surface of the aluminum foil. The obtained packaging material is composed of a low-density polyethylene innermost layer 9 / a low-density polyethylene layer 9 / aluminum foil 7 / a low-density polyethylene layer 8 / a paper base 4 / EMAA3 / an adhesion-enhancing film aluminum-deposited layer 2 / a PET film layer 1 / It has a layer configuration of an adhesion-enhancing film, an aluminum deposited layer 2, an ink layer 5, and an outermost layer 6 of low-density polyethylene. As described above, the manufactured packaging material is wound into a roll, sent to a slitter, slit width, slit position is confirmed and wound to a specified length,
Will be kept.

The obtained packaging material is a packaging material with a fold line. The packaging material is formed into a tube shape by a longitudinal vertical line seal, and is filled in the tube-shaped packaging material. Fill the material, apply a horizontal line seal in the transverse direction of the tube-shaped packaging material, first form into a cushion-shaped or pillow-shaped primary shape.If the packaging material is band-shaped, cut it individually at regular intervals and cut it along the fold line. It is folded along to form a brick (parallel hexahedron) final shape.

The present invention is not limited to the above embodiment,
Various modifications are possible within the scope of the present invention. For example, in place of the double-sided aluminum-deposited PET film having an adhesion-enhancing film on both sides in the above-described embodiment, a double-sided aluminum-deposited PET film having an adhesion-enhancing film on one side is used, and the aluminum-deposited surface with the adhesion-enhancing film and the inner side are used. In addition, a layer configuration in which the aluminum-deposited surface without the adhesion reinforcing film is on the outside can be used. The layer structure of the obtained packaging material is a low-density polyethylene innermost layer 9 /
Low-density polyethylene layer 9 / aluminum foil 7 / low-density polyethylene layer 8 / paper base 4 / EMAA3 / adhesion strengthening film aluminum deposited layer 2 / PET film layer 1 / aluminum deposited layer 2a
/ Ink layer 5 / low-density polyethylene outermost layer 6.

[0042]

According to the present invention demonstrated in the above embodiment, the following effects can be obtained. (A) The metal-deposited surface improves the adhesiveness with the outer printing ink or melt-laminated resin (LDPE) and the adhesive, and the improved adhesiveness allows the adhesive to bond to the inner paper substrate. Improve the performance further. As a result, the adhesiveness between the metal deposition surface and the paper substrate and the adhesiveness between the plastic film surface and the ink layer can be increased,
During the paper packaging container manufacturing process or during the distribution process, it is possible to prevent separation at the interface between the sealing portion of the paper container and the sealing portion between the paper packaging container and the straw.

(B) In a preferred embodiment of the present invention,
An adhesion reinforcing film is applied to the surface of the metal deposition layer. This adhesion-enhancing film penetrates into the fine irregularities, micropores, voids, and cavities on the metal-deposited surface, solidifies, and firmly fixes the adhesion-enhancement film to the metal-deposited surface, and converts it to many materials for the adhesion-enhancement film. Promotes adhesion with the material to be bonded (printing ink layer, adhesive layer) due to its affinity for

(C) Since expensive printing ink materials are not used, packaging materials and paper containers can be manufactured at low cost. (D) Since a polyester film having excellent transparency and various mechanical properties is used, metal-like gloss, shine,
A metallic appearance such as color can be imparted to the paper container appearance.

(E) In a preferred embodiment of the present invention,
Since the corona discharge treatment layer provided on the surface of the polyester film layer and / or the metal deposition layer improves the adhesiveness, and the corona discharge treatment layer is provided with an anchor agent coating layer as necessary, the polyester The adhesiveness of the film is maintained and maintained, and there is no need to continuously or without delay producing the semi-material for paper containers into packaging materials. can do.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of one embodiment of a packaging material for a paper container according to the present invention.

FIG. 2 is a schematic sectional view of another embodiment of the packaging material for a paper container according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 PET film layer 2 Adhesion reinforcement film aluminum vapor deposition layer 2a Aluminum vapor deposition layer 3 EMAA 4 Paper base material 5 Printing ink layer 6 Low density polyethylene outermost layer 7 Aluminum foil 8 Low density polyethylene layer 9 Low density polyethylene innermost layer

Claims (13)

[Claims] 1. A paper container having a metallic luster consisting of a paper base layer, an adhesive layer, and a transparent polyester film layer having a metal deposition layer on both sides, which are laminated in the above order from the inside to the outside. For semi-material. 2. The semi-material for a paper container according to claim 1, wherein an adhesion reinforcing film is applied to at least an inner surface of the inner metal deposition layer. 3. The semi-material for a paper container according to claim 2, wherein an adhesion reinforcing film is applied to the surfaces of the metal vapor deposition layers on both sides. 4. The paper container semi-material according to claim 1, wherein the transparent polyester film layer is formed by depositing metallic aluminum on both sides of the polyester film. 5. A method for producing a semi-material for paper containers, comprising the following steps. (A) a step of drawing a paper base material from a base paper roll; (b) drawing the film from a roll of a metal aluminum double-sided vapor-deposited polyester film composed of a transparent polyester film layer having a metal vapor-deposited layer laminated on both sides; A step of laminating the substrate surface with an adhesive. 6. The method for producing a semi-material for a paper container according to claim 5, wherein an adhesion reinforcing film is applied to the surface of the metal deposition layer, and a paper substrate surface is laminated on the surface of the adhesion reinforcing film via an adhesive. 7. A paper container having a metallic luster composed of a paper base layer, an adhesive layer, and a transparent polyester film layer having a metal vapor deposited layer on both sides laminated in the above order from the inside to the outside. A packaging material for a paper container, comprising at least a semi-material for use, an ink layer provided by printing on an outer surface of the semi-material, and an outer resin layer having a sealing property formed on the outer surface of the ink layer. 8. The packaging material for a paper container according to claim 7, wherein an adhesion reinforcing film is applied to at least an inner surface of the inner metal deposition layer. 9. The packaging material for a paper container according to claim 7, wherein the adhesion-enhancing film is applied to the surfaces of the metal deposition layers on both surfaces. 10. The packaging material for a paper container according to claim 7, comprising an inner resin layer applied to an inner surface of the semi-material. 11. The packaging material for a paper container according to claim 10, wherein a barrier layer is provided between the semi-material and the inner resin layer or on the inner surface of the inner resin layer. 12. The barrier layer is made of an aluminum foil, an inorganic oxide thin film, an ethylene vinyl alcohol copolymer layer (EVOH).
The packaging material for a paper container according to claim 11, comprising at least one selected from the group consisting of a layer, a nylon layer, a polyvinylidene chloride film, and a polyvinylidene chloride coated film. 13. A paper container having a metallic luster comprising a paper base material layer, an adhesive layer, and a transparent polyester film layer having a metal deposition layer on both sides, which are laminated in the above order from the inside to the outside. Semi-material, an ink layer formed by printing provided on the outer surface of the semi-material, an outer resin layer having a sealing property formed on the outer surface of the ink layer, and an inner sealing resin provided on the inner side of the semi-material. A paper container formed from a packaging material for a paper container, comprising at least a layer.