JP2005178851A - Laminate tube container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminate tube container in which tactile property is provided by forming unevenness over the entire surface of a container body, the identification property is realized by providing the mat-like appearance, the tube container is easily held by a user, and the barrier property and the content resistance against gaseous oxygen and steam are excellent. <P>SOLUTION: The laminate tube container is formed of a laminate constituted by successively stacking a face resin layer, an intermediate layer and an inner surface resin layer. The face resin layer surface which is the outermost layer at both ends of the laminate overlaps an inner surface resin layer which is the innermost layer, facing surfaces are heat-sealed to constitute a cylindrical barrel portion, and a head part consisting of a shoulder part and a mouth part is provided in one opening part of the cylindrical barrel portion. Unevenness is formed over the entire face resin layer surface as the outermost layer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a laminar tube container, and more specifically, it is possible to form a beautiful printed pattern or the like on the surface, and it is excellent in adhesion of printing ink and imparts tactile sensation. The present invention relates to a laminar tube container that is easy to hold, has excellent barrier properties against oxygen gas, water vapor, and the like, and is resistant to contents, and is suitable for filling and packaging contents such as toothpaste, foods, cosmetics, pharmaceuticals, and the like.

Conventionally, a laminar tube container usually produces a laminated material by sequentially laminating at least a surface resin layer, an intermediate layer, and an inner surface resin layer, and then using the laminated material, both ends thereof The surface resin layer and the inner surface resin layer are overlaid and the opposite surfaces are heat-sealed to produce a cylindrical body, and then a mouth portion is formed in one opening of the cylindrical body. Then, a head composed of a shoulder or the like is formed, and a cap is screwed onto the head, and on the other hand, the contents are filled from the other opening of the cylindrical body, and then the opening is sealed. Sealed to form a bottom seal to produce a packaged product comprising a laminated tube container.
In the above laminar tube container, the resin forming the surface resin layer constituting the laminar tube container is generally composed of a polyethylene resin.
By the way, in the laminar tube container as described above, a predetermined item such as a product name, manufacturer, seller, date of manufacture, etc. is usually displayed on the outer peripheral surface of the body portion together with a desired pattern. A printed pattern layer is formed.
The above-mentioned printed pattern layer is generally pre-gravure-printed on the back surface of the raw film of the resin film forming the surface resin layer constituting the laminating tube container and the resin film forming the intermediate layer. After that, the laminated material is manufactured by laminating the material constituting the intermediate layer, the inner surface resin layer, etc., and then the laminated tube container is manufactured using the laminated material. ing.
Alternatively, the printed pattern layer is formed by sequentially laminating the surface resin layer, the intermediate layer, and the inner surface resin layer to produce a laminated material, and then formed on the surface of the surface resin layer of the laminated material. Subsequently, the laminated material is used to manufacture a laminated tube container in which the printed picture layer is formed on the outer peripheral surface of the body portion.

  However, with the widespread use of laminating tube containers as described above, consumers have come to use many similarly shaped tube containers in daily life. There is a disadvantage that it may be used.

For example, in a tube container having a cylindrical body part integrally joined by winding a synthetic resin laminated sheet and thermocompression bonding the obtained overlapping part as a tube container that eliminates this drawback, There has been proposed a tube container with a surface treatment characterized in that a concavo-convex pattern is provided in a crimped portion (see, for example, Patent Document 1).
JP-A-8-72905

  However, in the laminar tube container as described above, the convex part is formed only on the thermocompression bonding part, so the slipperiness of the container body is poor, so it is difficult to slip in the filling process, and the convex part is formed on the conventional tube container. Since the number of processes to be performed increases, productivity is worse than in the prior art, and each tube container becomes bulky, so that there is a problem that the container cannot be packed compactly.

  The object of the present invention is to provide tactile sensation by forming irregularities on the entire surface of the laminate tube container, and has a mat-like appearance, so that it has the appearance of the laminate tube container, and discriminating power by tactile sensation, In addition, it is easy for consumers to hold a tube container, and it has excellent barrier properties against oxygen gas, water vapor, etc., content resistance, etc., for example, for filling and packaging of contents such as toothpaste, food, cosmetics, pharmaceuticals, etc. It is another object to provide a laminar tube container.

  Then, in order to solve the said subject, the laminar tube container of this invention is a laminated material which consists of a structure which laminated | stacked the surface resin layer, the intermediate | middle layer, and the inner surface resin layer one by one in order, Furthermore, The surface resin layer surface that is the outermost layer and the inner surface resin layer surface that is the innermost layer are overlapped on both ends of the laminated material, and the opposite surface is heat sealed to form a cylindrical body portion. In a laminar tube container in which a head portion including a shoulder portion and a mouth portion is provided in one opening portion of the cylindrical body portion, unevenness is formed on the entire surface resin layer surface which is the outermost layer.

  In the laminar tube container of the present invention, the surface of the surface resin layer has irregularities of 10 μm or more and 300 μm or less.

  Further, the surface resin layer of the laminar tube container of the present invention is formed by extrusion laminating film formation or T-die cast film formation.

  Moreover, the intermediate layer of the laminar tube container of the present invention is characterized by comprising a base film layer and a barrier layer.

  In the laminar tube container of the present invention, the base film layer constituting the intermediate layer forms a pattern printing layer on at least one surface thereof.

  The intermediate layer of the laminar tube container of the present invention is either a metal vapor-deposited film or a metal oxide vapor-deposited film.

  The laminar tube container of the present invention provides tactile sensation by forming irregularities on the entire surface of the container body, and has a mat-like appearance. In addition, it is easy for consumers such as elderly people to hold tube containers, and also has excellent barrier properties against oxygen gas, water vapor, etc., adhesion of printing inks, content resistance, etc., for example, toothpaste, food It has the advantage that it is suitable for filling and packaging contents such as cosmetics, pharmaceuticals, etc.

  The above-described present invention will be described in more detail below. First, the structure of a laminar tube container according to the present invention will be described with reference to the drawings. FIGS. 1, 2, 3 and 4 are laminated materials for forming a laminar tube container according to the present invention. FIG. 5 is a schematic half sectional view showing the structure of a tube container according to the present invention manufactured using the laminated material shown in FIG. 6 is a schematic view showing a method for laminating a laminate for a laminated tube container according to the present invention, and FIG. 7 shows an example of the surface shape of the laminated material for a laminated tube container according to the present invention. FIG.

  First, as shown in FIG. 1, as a laminated material 10 forming a laminar tube container according to the present invention, at least a surface resin layer 2, an intermediate layer 4, and an inner surface resin layer 6 are sequentially formed from the outside. The basic structure is to be composed of layers laminated on each other. Further, the concave portion 44 and the convex portion 42 are formed on the entire surface of the outermost surface resin layer.

  More specifically, the laminated material 10 forming the laminar tube container according to the present invention includes at least a surface resin layer 2, an intermediate layer 4, and an inner surface resin layer 6 as shown in FIG. It has a configuration in which the layers are sequentially laminated, and the concave / convex pattern 8 is formed on the surface of the surface resin layer. Further, the intermediate film 4 can use the base film layer 12 and the barrier layer 14.

  Further, as shown in FIG. 3, at least a surface resin layer 2, an intermediate layer 4, and an inner surface resin layer 6 are sequentially laminated as a laminated material 10 forming a laminar tube container according to the present invention. Consists of the structure, forming irregularities on the entire surface of the surface resin layer, and further, the base film layer 12 constituting the intermediate layer 4 is printed on one side or both sides of characters, figures, symbols, patterns, etc. Layer 16 can be formed.

Further, as shown in FIG. 4, at least the surface resin layer 2, the intermediate layer 4, and the inner surface resin layer 6 are sequentially laminated as the laminated material 10 forming the laminar tube container according to the present invention. Consists of the structure, forming unevenness on the entire surface of the surface resin layer, and further, the base film layer 12 constituting the intermediate layer 4 is provided with a printing layer 16 of characters, figures, symbols, patterns, etc. on one side. Further, the base film layer 19 can be formed of either a metal vapor-deposited film or a metal oxide vapor-deposited film 18 as a barrier layer.
The laminated material 10 exemplified above is a few examples, and the present invention is not limited to the laminated material having the configuration exemplified above, and uses various types of laminated materials. can do. For example, although not shown, a layer made of another material can be provided between each layer depending on the use, contents to be filled, etc., and the stacking order can be arbitrarily stacked. is there.

Next, in the present invention, an example of producing a laminar tube container according to the present invention using the laminated material forming the laminar tube container 20 as described above will be described. FIG. 5 is a schematic half-sectional view showing a configuration of a laminar tube container according to the present invention manufactured using the laminated material 10 forming the tube container shown in FIGS.
In the present invention, as shown in FIG. 5, first, the laminated material 10 forming the laminar tube container shown in FIGS. 1 to 4 is rolled up, and the outermost layers at both ends of the laminated material 10 are used. A surface resin layer surface and an innermost resin layer surface that is the innermost layer are overlapped, and the polymerization end portions are welded to form a welded portion 22 to form a cylindrical body portion 24.
Next, in the present invention, a head 30 comprising a shoulder portion 26, a mouth portion 28, etc. constituting a laminar tube container is formed in accordance with a conventional method on the upper portion of one opening of the cylindrical body portion 24. To do.
And in this invention, as shown in said FIG. 5, the cap 32 which seals is attached to the opening | mouth part 26 of the head 30 formed above, and the lamination tube container 20 concerning this invention is manufactured. Is. The laminar tube container 20 manufactured as described above is filled and packaged with an appropriate amount of contents 36 such as toothpaste from the other opening of the cylindrical body 24, and then the opening. Can be produced by forming the bottom welded portion 34 and filling and packaging the contents 36. The examples given above are only examples of the laminar tube container of the present invention, and the present invention is not limited thereby.

Next, in the present invention, the material constituting the laminated material, the laminar tube container and the like as described above will be described.
First, in the present invention, as the material constituting the surface resin layer 2 and the inner surface resin layer 6, as described above, a laminated material is rolled and its polymer end is welded to produce a cylindrical body portion. Therefore, it is preferable to use a resin having heat sealability that can be melted by heating and fused to each other. And since the material which comprises a surface resin layer and an inner surface resin layer consists of the same material, since heat seal property can be improved, it is preferable.
Further, the surface resin layer needs to be transparent so that the printed layer formed on the intermediate layer 4 can be seen.
Specifically, as the resin having the above heat seal property, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, metallocene catalyst are used. Polymerized ethylene-α / olefin copolymer, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-methacrylic acid copolymer, Polyolefin resin such as ethylene-methyl methacrylate copolymer, ethylene-propylene copolymer, methylpentene polymer, polybutene polymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, polyethylene or polypropylene. Acid-modified polyols acid-modified using unsaturated carboxylic acids Fin resins, polyvinyl acetate resins, poly (meth) acrylic resin, polyvinyl chloride resin, may be a resin other like.
The above resin having heat sealability can be used, for example, in the form of a film or sheet or a coating film made of a composition containing the resin.
The thickness of the film or film or sheet is about 10 μm to 200 μm, preferably about 15 μm to 100 μm.

  Next, in the surface resin layer 2 and the inner surface resin layer 6 of the present invention, when a functional resin layer is formed by laminating multiple heat seal layers, the material includes barrier properties against oxygen gas, water vapor, and the like. , And / or less adsorbing fragrance components contained in the contents to be packed and packed, rich in fragrance retention, etc., and also has the property of not causing a taste change or off-flavor, and can be extruded. Certain resins can be used. Specifically, for example, polyacrylic resin, polymethacrylic resin, polyacrylonitrile resin, polymethacrylonitrile resin, polystyrene resin, polycarbonate resin, polyethylene terephthalate resin or the like Resin obtained by copolymerizing or modifying a part of ethylene component and / or terephthalate component with other di- or higher polyalcohol component or dicarboxylic acid component, or polyester resin such as polyethylene naphthalate resin Polyamide resins, saponified ethylene-vinyl acetate copolymers, polyvinyl alcohol resins, polyvinyl chloride resins, polyvinylidene chloride resins, and other resins can be used. Thus, in the present invention, among the above resins, it is desirable to use a resin having a fragrance retention property and a barrier property against oxygen gas or water vapor. Specifically, for example, ethylene-vinyl acetate is used. It is desirable to use a saponified copolymer, a polyamide-based resin, a polyacrylonitrile-based resin, a polyester-based resin, or the like, which is rich in aroma retention and barrier properties.

Next, in the present invention, a manufacturing method for forming the surface resin layer 2 and the inner surface resin layer 6 on the intermediate layer 4 using one or more of the above-described various resins will be described. May employ an extrusion lamination film forming method, a T-die cast film forming method, or the like.
Specifically, the above-mentioned various resins can be used alone by using a T die cast molding method such as a feed block method or a multi-manifold method, or a molding method such as an extrusion laminating film forming method. A method of forming a film, a method of forming a multilayer coextrusion film using two or more kinds of resins, and further, using two or more kinds of resins and mixing them before forming a film. The surface resin layer and the inner surface resin layer according to the present invention can be manufactured by a method of forming a film.

FIG. 7 is a schematic plan view showing an example of the surface shape of a laminar tube container according to the present invention.
As shown in FIG. 7, in this invention, it has the recessed part 44 of 10 micrometers or more and 300 micrometers or less formed in the whole surface of the surface resin layer of a trunk | drum, and the convex part 42, ie, the convex part and a concave part on the surface. The difference in thickness is preferably 10 μm or more and 600 μm or less.
As a result, the laminating tube container is provided with tactile sensation and has a mat-like appearance, so that the laminated tube container has the appearance and the distinctiveness due to the tactile sensation. It has the advantage that it is easy to hold and has excellent filling suitability for the contents.
If the difference in thickness between the convex portion 42 and the concave portion 44 is 10 μm or less, it is not preferable because the above effects, that is, the tactile mat-like appearance and slipperiness cannot be imparted.
In addition, as the shape pattern of the convex and concave portions, a lattice shape, a point dispersion shape, a stripe shape, or the like can be used.
For example, as the lattice shape of the convex and concave portions, the size w of the lattice is 0.1 mm or more and 10 mm or less, and the pitch between the concave portions and the concave portions formed in the axial direction of the cylindrical body portion of the laminar tube container is 0.1 mm or more and 5 mm or less, and the pitch between the recesses formed in the radial direction is preferably 0.1 mm or more and 5 mm or less because of excellent tactile sensation.

FIG. 6 is a schematic view showing a method of forming a concavo-convex pattern on the entire surface of the laminated material for a laminated tube container according to the present invention.
As shown in FIG. 6, the winding of the base sheet (intermediate layer) 4 is set from the first paper feed 100, and the base sheet (intermediate layer) 4 is supplied from the first paper feed 100 via the guide roll 102. After the melt-extruded resin layer is extruded from a T-type die 104 of an extrusion laminator and applied as a melted surface resin layer 2 on one side, a cooling roll 106 having a concavo-convex shape formed on the surface by mill engraving and a smooth surface The laminated sheet 110 can be obtained by passing between the rubber rolls 108 and laminating by an extrusion laminate forming film forming method to take up the take-up roll 112 and form a lattice-like uneven pattern on the surface.
Specifically, the cooling roll has an uneven height difference of 10 mm or more and 600 mm or less on the surface thereof, and a pitch between the recesses and the recesses formed in the axial direction of the roll is 0.1 mm or more and 5 mm or less. A cooling roll having a surface shape in which the pitch between the concave portions and the concave portions formed in the radial direction of the roll is 0.1 mm or more and 5 mm or less can be used.
Further, a sandblasting device is used for the concave and convex portions of the cooling roll, and particles having a particle size of about 1 μm to several mm are used as abrasives and sprayed directly onto the surface of the cooling roll (made of metal). By performing the steps, a roughened surface of 0.1 μm to several hundred μm can be formed on the surface of the cooling roll.
By this, it has the advantage that the surface of the said recessed part and convex part of the said cooling roll can be made uniform, and a mat feeling can be provided.
The sand blasting process uses a sand blasting apparatus, and the surface of the cooling roll is made of ceramic beads made of ceramic such as alumina, glass beads, metal particles such as SUS, etc., and particles having a particle size of about 1 μm to several mm. It is used by spraying on the surface of the cooling roll under the conditions of a projection speed of the abrasive; several tens of m / sec to several hundred m / sec, a projection amount per unit time; several g / min to several hundred kg / min.
In the cooling roll, a method for forming a roughened surface on the surface where the concave and convex portions are formed is not limited to the sand blasting process, and may be a shot blasting process.
A film or sheet that forms a concavo-convex pattern on the surface can be produced by a T-die cast film forming method or an inflation forming film forming method in which a molten resin made of the above material is extruded from a T die. After that, any lamination method used when producing other layers and normal packaging materials, for example, wet lamination method, dry lamination method, solventless dry lamination method, etc. By laminating by the method, uniform unevenness can be formed on the surface of the laminated film or sheet for laminated tube containers, and a matte feeling can be imparted.

In the laminar tube container of the present invention, the intermediate layer 4 needs to be composed of the base film layer 12 and the barrier layer 18.
First, as a material for the base film layer constituting the intermediate layer, for example, as a basic material constituting the tube container, it has excellent properties in mechanical, physical, chemical, etc. A resin film or sheet having strength and toughness and having heat resistance can be used.
Specifically, for example, a film of a tough resin such as a polyester resin, a polyamide resin, a polyaramid resin, a polyolefin resin, a polycarbonate resin, a polyacetal resin, a fluorine resin, or the like. Sheets, etc. can be used.
As the resin film or sheet, any of an unstretched film or a stretched film stretched in a uniaxial direction or a biaxial direction can be used.
The thickness of the film is about 5 μm to 100 μm, preferably about 10 μm to 50 μm.

Next, in the present invention, as the material of the base film layer 12 constituting the intermediate layer 4, for example, various paper bases constituting the paper layer can be used. Specifically, In the present invention, the paper base material is provided with formability, flex resistance, rigidity, etc., for example, a strong or small bleached or unbleached paper base material, or pure white roll paper, craft Paper substrates such as paper, paperboard, and processed paper, and the like can be used. In the above, as the paper substrate constituting the paper layer, those having a basis weight of about 80g / m ² ~600g / m ² position, preferably, use a basis weight of about 100g / m ² ~450g / m ² of It is desirable to do. Of course, in the present invention, the paper base material constituting the paper layer and various resin films or sheets as the base film mentioned above can be used in combination.

Next, in the present invention, on one side or both sides of the base film layer 12 constituting the intermediate layer 4 as described above, by a printing method such as a gravure printing method, a flexographic printing method, for example, characters, figures, symbols, A desired pattern printing layer 16 such as a pattern or pattern can be formed.
In the present invention, when the pattern print layer 16 is formed on the base film layer constituting the intermediate layer, the surface resin layer surface, which is the outermost layer, is formed with unevenness to cause ink rubbing or the like due to impact from the outside. In addition, there is an advantage that the adhesion strength of the ink can be improved.

Furthermore, in the present invention, as the material of the barrier layer 18 constituting the intermediate layer, for example, a barrier material against oxygen gas, water vapor, etc., a barrier material having a light-shielding property against sunlight, or the like It is possible to use a barrier material or the like having a fragrance-retaining property.
Specifically, as the barrier material, for example, a metal foil or a resin film having a metal vapor deposition layer, an inorganic oxide vapor deposition layer, or a metal oxide vapor deposition layer can be used. As the barrier material, a coating film made of a barrier resin can be used. In particular, it is either a metal vapor-deposited film or a metal oxide vapor-deposited film that has excellent barrier properties such as oxygen gas, water vapor, light-shielding properties, and fragrance retention, and is environmentally friendly in terms of disposal of containers. This is preferable.
A resin film having a metal vapor deposition layer, an inorganic oxide vapor deposition layer, or a metal oxide vapor deposition layer. Specifically, the barrier material may be an aluminum foil or a metal such as aluminum, silica, alumina, or the like. Ceramic can be used by forming a deposited film on a plastic film such as a PET film.
In addition to these, indium tin oxide (ITO), metal oxides such as zinc, tin, titanium, zirconium, vanadium, barium, chromium, silicon nitride, silicon carbide, and the like can be used as the ceramic. These materials can be used alone or in combination.
In the above, it is preferable to use an aluminum foil having a thickness of about 5 μm to 30 μm, and a metal, metal oxide, or inorganic oxide deposited film having a thickness of about 50 mm to 3000 mm. 100 to 1000 mm is desirable.
As the metal, metal oxide, or inorganic oxide to be used, it is also possible to use one kind or a mixture of two or more kinds to form a vapor-deposited film of an inorganic oxide mixed with different materials.

The resin film that supports the above-mentioned vapor-deposited film has an excellent property in mechanical, physical, chemical, etc. because it is provided with a vapor-deposited layer, and is particularly strong and tough. In addition, a heat-resistant resin film or sheet can be used.
Specifically, in the present invention, examples of the resin film that supports the vapor deposition film include polyester resin films such as polyethylene terephthalate, polyamide resin films such as various nylons, polyethylene resins, and polypropylene resins. , Cyclic polyolefin resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyolefin film such as polybutene resin film, polyvinyl chloride resin, polycarbonate -Resin, polyimide resin, polyamideimide resin, polyaryl phthalate resin, silicone resin, polysulfone resin, polyphenylene sulfide resin, polyethersulfone resin, polyurethane resin, cellulose Scan-based resins, poly (meth) acrylic resins, polyvinylidene chloride film, acetal resin film, fluorine-based resin, it is possible to use other like. In the present invention, it is particularly preferable to use a film or sheet of polypropylene resin, polyester resin, or polyamide resin.

Next, in the present invention, a method for forming a deposited film constituting the barrier layer will be described. As such a method, the above metal or metal oxide is used as a raw material, for example, a vacuum deposition method, a sputtering method, Physical vapor deposition methods (physical vapor deposition method, PVD method) such as ion plating method cluster-ion beam method, plasma chemical vapor deposition method, thermal chemical vapor deposition method, photochemical vapor deposition method, etc. Using a chemical vapor deposition method (Chemical Vapor Deposition method, CVD method) or the like, a deposited thin film can be formed on a resin film.
More specifically, in the PVD method described above, for example, a wind-up type vapor deposition machine is used, and the resin film discharged from the unwinding roll is put into the vapor deposition chamber in the vacuum chamber. Here, the evaporation source heated by the crucible is evaporated, and further, if necessary, oxygen or the like is blown out from the oxygen blowing port, and the resin film on the cooled coating drum is passed through a mask. The resin film having the vapor deposition thin film according to the present invention can be manufactured by forming the vapor deposition film into a film and then winding the resin film having the vapor deposition thin film on a winding roll.
On the other hand, in the above-described CVD method, the resin film fed from the unwinding roll disposed in the vapor deposition chamber is cooled on the vapor deposition chamber on the circumferential surface of the electrode drum, from the vapor deposition material volatilization supply device. For example, a resin film in which a vapor-deposited thin film of silicon oxide is formed by plasma can be manufactured by introducing a mixed gas comprising, for example, an organosilicon compound, oxygen gas, and inert gas as a monomer gas. And in this invention, in the resin film which has the above-mentioned vapor deposition thin film of inorganic oxides, oxygen gas, water vapor | steam, etc. are blocked | prevented, and there exists a function as a barrier layer with respect to these. is there.

  In the above, the thickness of the vapor-deposited thin film of metal oxide and inorganic oxide is usually preferably about 50 to 3000 mm in order to obtain a sufficient barrier property. A position of 2000 mm is desirable. More specifically, in the PVD method, the film thickness of the aluminum oxide vapor-deposited thin film is about 200 to 1000 mm, preferably about 300 to 500 mm. In the CVD method, silicon oxide is vapor-deposited. The thickness of the thin film is about 50 to 500 mm, preferably about 100 to 300 mm. In addition, in the above, generally, when the thickness of the vapor-deposited thin film of inorganic oxide exceeds 2000 mm, cracks and the like are likely to occur in the vapor-deposited thin film of metal oxide and inorganic oxide, and the barrier property is lowered by warping. It is not preferable because it is dangerous and the material cost is high, and if it is less than 100 mm, it is not preferable because it becomes difficult to perform its function.

  In the present invention, examples of the barrier material or the material having aroma retaining property include, for example, polyvinylidene chloride resin, polyester resin, polyamide resin, ethylene-vinyl acetate copolymer (vinyl acetate is used). A resin having a high gas barrier property such as ethylene-vinyl alcohol copolymer, polyvinyl alcohol, polyacrylonitrile, etc. having an ethylene content of 25 mol% to 50 mol% completely saponified to approximately 79 wt% to 92 wt%) A film or a sheet or a coating film can be used.

Next, in the present invention, as the material constituting the intermediate layer 4, for example, a light shielding material having a property of shielding light such as sunlight can be used, and this may be a single base material. Or the composite base material etc. which combined 2 or more types of base materials may be sufficient.
As the light-shielding material, for example, it is preferable to use an aluminum foil having a thickness of about 5 μm to 30 μm, and a vapor deposition film of a metal such as aluminum having a thickness of about 50 mm to 3000 mm, The range of 100 to 1000 mm is desirable.
In addition, as the light-shielding material, various color resin films or sheets having a light-shielding property formed by adding a colorant such as a pigment to the resin and further kneading and adding other desired additives. Can be used. These materials can be used alone or in combination. The thickness of the film or sheet is arbitrary, but is usually about 5 μm to 300 μm, more preferably about 10 μm to 100 μm.

  By the way, since the laminated tube container 20 is usually subjected to severe physical and chemical conditions, the laminated material constituting such a container is required to have strict packaging suitability, and deformation prevention strength. Various requirements such as drop impact strength, pinhole resistance, heat resistance, sealability, quality maintenance, workability, hygiene, and the like are required. In addition to the materials, other materials satisfying the above-mentioned conditions can be arbitrarily used. Specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene , Polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid or methacryl Copolymer, methylpentene polymer, polybutene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer, poly (meth) acrylic resin, polyacrylic Nitrile resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyester resin, polyamide resin, polycarbonate resin, Polyvinyl alcohol resin, saponified ethylene-vinyl acetate copolymer, fluorine resin, diene resin, polyacetal resin, polyurethane resin, nitrocellulose, etc. -Can be arbitrarily selected from In addition, for example, a film such as cellophane, a synthetic paper, or the like can be used. In the present invention, the above-described film or sheet may be any of unstretched, uniaxially or biaxially stretched. Moreover, although the thickness is arbitrary, it can select and use from the range of several micrometers-about 300 micrometers. Furthermore, in the present invention, the film or sheet may be a film having any property such as extrusion film formation, inflation film formation, and coating film.

Next, in the present invention described above, a method for producing the laminated material 10 for forming the laminar tube container 20 according to the present invention using the above materials will be described. Laminating methods used when producing the packaging material of, for example, wet lamination method, dry lamination method, solvent-free dry lamination method, extrusion lamination method, T-die coextrusion molding method, It can be performed by an arbitrary method such as a coextrusion lamination method, an inflation method, or the like.
In the present invention, when performing the above-mentioned lamination, if necessary, pretreatment such as corona treatment and ozone treatment can be applied to the film, and for example, isocyanate (urethane) Type), polyethyleneimine type, polybutadiene type, organic titanium type anchor coating agent, or polyurethane type, polyacrylic type, polyester type, epoxy type, polyvinyl acetate type, cellulose type, etc. -Anchor coating agents such as adhesives for adhesives, adhesives and the like can be arbitrarily used.

  By the way, in the manufacturing method of the laminated material as described above, examples of the extrusion resin constituting the adhesive resin layer in extrusion lamination include polyethylene, ethylene-α / olefin copolymer, polypropylene, polybutene, and polyisobutene. Copolymer of ethylene and unsaturated carboxylic acid such as polyisobutylene, polybutadiene, polyisoprene, ethylene-methacrylic acid copolymer, or ethylene-acrylic acid copolymer, or acid-modified polyolefin-based resin obtained by modifying them. An ethylene-ethyl acrylate copolymer, an ionomer resin, an ethylene-vinyl acetate copolymer, and the like can be used. Further, in the present invention, as the adhesive constituting the adhesive layer when dry laminating, specifically, a two-component curable urethane adhesive or a polyester urethane adhesive used in dry laminating or the like Polyether urethane adhesives, acrylic adhesives, polyester adhesives, polyamide adhesives, polyvinyl acetate adhesives, epoxy adhesives, rubber adhesives, and the like can be used.

  Next, in the present invention, when the laminar tube container 20 according to the present invention is manufactured, for example, as a method of heat sealing when manufacturing the cylindrical body portion, for example, a brush is used. It can be performed by a method such as a seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, an ultrasonic seal, and a flame seal.

Next, in the present invention, the laminated material forming the laminar tube container manufactured above is used. First, the cylinder is rolled up and welded at its polymerization end to constitute the laminar tube container. A cylindrical body is manufactured, and then, for example, high-density polyethylene is molded and welded by injection molding, compression molding, or other molding methods, and the shoulder and mouth are formed above the cylindrical body. A laminar tube container according to the present invention can be manufactured by forming a head and then attaching a cap to the mouth part constituting the head.
In the present invention, the contents to be filled and packaged are filled from the opening at the lower end of the laminated tube container produced above, and then the opening is heat sealed to form the bottom welded portion. Thus, a laminated tube package can be manufactured.
In the above, examples of the contents to be filled and packaged include toothpaste, cosmetics, glue, paste, paste wasabi, cream, paint, ointment, pharmaceutical, and the like.
In the above, as a material constituting the head composed of a shoulder portion, a mouth portion and the like of the laminar tube container, in addition to the above high-density polyethylene, further, ethylene polymerized using the metallocene catalyst described above An α-olefin copolymer or the like can also be used.

Next, the present invention will be described more specifically with reference to examples.
First, a printing layer with a polyurethane gravure ink was formed on a biaxially stretched polyethylene terephthalate film (1) having a thickness of 12 μm to obtain a biaxially stretched polyethylene terephthalate film having a beautiful pattern printing layer.
On the other hand, a vapor deposition film for forming a vapor deposition thin film (barrier layer) of silicon oxide having a thickness of 300 mm was prepared on a biaxially stretched polyethylene terephthalate film (2) having a thickness of 12 μm.
Next, 4 g / m ^{2 of} polyurethane adhesive is applied to the printing surface of the biaxially stretched polyethylene terephthalate film having the pattern printing layer by a roll coating method, and then laminated with the vapor deposition surface of the vapor deposition film facing each other. did.
As a result, a laminated film A (intermediate layer) composed of a layer structure, a biaxially stretched polyethylene terephthalate film (1) / a pattern printing layer / an adhesive layer / a deposited layer of silicon oxide / a biaxially stretched polyethylene terephthalate film (2). Got.
Thereafter, 4 g / m ^{2 of} polyurethane adhesive is coated on the surface of the biaxially stretched polyethylene terephthalate film (1) of the laminated film (intermediate layer) obtained above by a roll coating method, and then as an inner surface resin layer. Laminate corona-treated linear low-density polyethylene film having a thickness of 130 μm, layer structure, biaxially stretched polyethylene terephthalate film (1) / pattern printed layer / adhesive layer / silicon oxide deposited layer / biaxially stretched polyethylene A laminated film B consisting of terephthalate film (2) / adhesive layer / inner surface resin layer was obtained.

The cooling roll used in the laminating apparatus is first formed by a mill engraving method with a grid pattern having a height difference of 75 μm, a pitch, and 0.3 mm inclined by 45 degrees with respect to the axial direction. A cooling roll having a sandblasted surface formed thereon was prepared by a sandblasting device on the surface of the uneven portion formed as described above.
As a result, it was possible to form a concavo-convex portion having a uniform mat feeling on the surface of the cooling roll.

Next, after attaching the cooling roll prepared above to the laminating apparatus, an isocyanate anchor coating agent is applied to the side surface of the biaxially stretched polyethylene terephthalate film (1) of the laminated film B obtained above by a roll coating method. The primer layer was formed by coating.
Thereafter, a molten resin composed of a low-density polyethylene resin is extruded onto the surface of the primer layer, supplied from a T-die, and pressed and laminated between a cooling roll and a nip roll formed with a concavo-convex shape in a lattice shape to form a surface resin layer surface A linear low density polyethylene resin layer having a thickness of 60 μm was laminated by an extrusion coating method.
As a result, the height difference between the concave and convex portions, 75 μm, the pitch between the concave portions and the concave portions formed in the axial direction of the cylindrical body portion, 0.3 mm, the pitch between the concave portions and the concave portions formed in the radial direction of the cylindrical body portion, Layer structure, surface resin layer / biaxially stretched polyethylene terephthalate film (1) / pattern printed layer / adhesive layer / silicon oxide formed by tilting 3 mm grid-like irregularities 45 degrees with respect to the height direction of the container body A laminate 10 for a laminated tube container according to the present invention of a vapor-deposited layer / biaxially stretched polyethylene terephthalate film (2) / adhesive layer / inner surface resin layer is obtained, and its surface is appropriately and uniformly roughened. As a result, unevenness was formed and the matte feeling was obtained.

  As a result, using the laminated tube container laminate 10 obtained above, one mandrel is used to superimpose one side part and the other side part to form a cylindrical shape. A cylindrical molded body was obtained by welding the back surface layer and the surface layer of the laminated sheet by a heat welding method.

Subsequently, a shoulder portion and a neck portion were molded and joined to the body portion of the laminate tube container, thereby obtaining a laminate tube container 20 according to Example 1 of the present invention.
This laminated tube container can form a beautiful printed pattern or the like by backing the base film (intermediate layer) of the trunk, and imparts tactile sensation by forming irregularities on the entire surface of the container body. In addition, since it has a mat-like appearance, it has a discriminating power due to the appearance and tactile sensation of the laminated tube container, and it is easy for consumers such as elderly people to hold the tube container and the container body is bulky in the distribution process. In addition, it can prevent scratches due to vibration, and has excellent barrier properties against oxygen gas, water vapor, etc., adhesion of printing ink, content resistance, etc., such as toothpaste, foods, cosmetics, pharmaceuticals, etc. Suitable for filling packaging and excellent.

As a cooling roll for a T-die cast molding machine, a cooling roll having the same shape as that of Example 1, that is, a sandblasted surface formed on a grid-like unevenness inclined 45 degrees in the axial direction was prepared.
After that, by a T-die cast molding film forming method in which a molten resin made of a low-density polyethylene resin is extruded from a T-die, a concave portion and a concave portion formed in the axial direction of the thickness of 80 μm, unevenness, 100 μm, and the cylindrical body Pitch, 0.5 mm, pitch between recesses and recesses formed in the radial direction of the cylindrical body, and low density formed by tilting a pattern of recesses and recesses of 0.5 mm with respect to the height direction of the container body by 45 degrees A polyethylene resin film was produced.
As a result, it was possible to obtain a low-density polyethylene resin film that forms uneven portions having a uniform mat feeling on the surface.

Further, in the same material and production method as in Example 1, as an intermediate layer, a biaxially stretched polyethylene terephthalate film (1) / picture printed layer / a deposited layer of silicon oxide / biaxially stretched polyethylene terephthalate film (2) Using a laminated film A comprising a polyethylene terephthalate film (2) surface, a urethane-based adhesive is applied by a roll coating method, and after coating 4 g / m ² , the adhesive surface is further thickened as an inner resin layer. Then, a 130 μm linear low density polyethylene film was laminated, and layer structure, biaxially stretched polyethylene terephthalate film (1) / pattern printed layer / adhesive layer / silicon oxide deposition layer / biaxially stretched polyethylene terephthalate film ( 2) A laminated film C composed of / adhesive layer / inner surface resin layer was obtained.
It was.
Thereafter, a urethane adhesive is applied to the surface of the biaxially stretched polyethylene terephthalate film (1) of the laminated film C obtained above by a roll coating method, and then the uneven pattern obtained above is formed on the surface. It bonded together with the non-processed surface of the low density polyethylene resin film.
As a result, from the front side to the back side, the height difference of the unevenness, 75 μm, the pitch between the recesses and recesses formed in the axial direction of the cylindrical body, 0.3 mm, and the radial direction of the cylindrical body Layer structure, surface resin layer / biaxially stretched polyethylene terephthalate film (1) / pattern, formed by pitching the recesses to the recesses and having a grid-like irregularity of 0.3 mm inclined by 45 degrees with respect to the height direction of the container body A laminate for a laminate tube container according to the present invention of a printing layer / adhesive layer / silicon oxide vapor deposition layer / biaxially stretched polyethylene terephthalate film (2) / adhesive layer / inner surface resin layer is obtained, Appropriate and uniformly roughened irregularities were formed and had a matte feel.

The laminate for a laminated tube container according to the present invention obtained above is formed into a cylindrical shape by superposing one side portion and the other side portion using a mandrel, and a laminated sheet in the overlap portion A cylindrical molded body was obtained by welding the back surface layer and the surface layer of this by a thermal welding method.
Subsequently, the laminate tube container according to Example 2 of the present invention was obtained by molding and joining the shoulder part and the neck part to the body part of the laminate tube container.
This laminated tube container has tactile sensation by forming irregularities on the entire surface of the container main body, and has a mat-like appearance, so that it has a discriminating power due to the appearance of the laminated tube container and the tactile sensation. In particular, consumers such as elderly people can easily hold a tube container, the container body does not become bulky in the distribution process, can be prevented from being scratched by vibration, has excellent adhesion of printing ink, provides tactile sensation, and is easy to hold. Furthermore, it was excellent in barrier properties against oxygen gas, water vapor, etc., content resistance, and the like.

1 is a laminated material for a laminar tube container according to the present invention. 1 is a laminated material for a laminar tube container according to the present invention. 1 is a laminated material for a laminar tube container according to the present invention. 1 is a laminated material for a laminar tube container according to the present invention. It is a schematic half sectional view showing the configuration of the tube container according to the present invention. It is the schematic which shows the bonding method of the laminated material for laminating tube containers concerning this invention. It is the plane schematic which shows an example of the surface shape of the laminar tube container concerning this invention.

Explanation of symbols

2 Surface resin layer 4 Intermediate layer 6 Inner surface resin layer 10 Laminate 12, 19 Base film layer 16 Print layer 18 Metal oxide vapor deposition film (barrier layer)
20 Laminate tube container 22 Welding part 24 Cylindrical body part 26 Shoulder part 28 Mouth part 30 Head part 32 Cap 34 Bottom welding part 36 Contents 40 Laminate tube packaging body 42 Convex part 44 Concave part 50 Base material sheet 100 First paper feed 102 Guide roll 104 T dice 106 Concave and convex cooling roll 108 Rubber roll 110 Laminated sheet 112 Take-up roll d Convex and concave thickness w Grid size

Claims (6)

  It is a laminated material having a structure in which at least a surface resin layer, an intermediate layer, and an inner surface resin layer are sequentially laminated, and further, a surface resin layer surface that is an outermost layer at both ends of the laminated material and an inner surface that is an innermost layer The resin layer surface is overlaid and the opposite surface is heat sealed to form a cylindrical body, and a head composed of a shoulder and a mouth is formed in one opening of the cylindrical body. In the laminated tube container provided, irregularities are formed on the entire surface resin layer surface which is the outermost layer.   The laminar tube container according to claim 1, wherein the surface resin layer has irregularities of 10 µm or more and 300 µm or less on the surface thereof.   3. A laminate tube container according to claim 1, wherein the surface resin layer is formed by extrusion lamination film formation or T-die cast film formation.   The laminar tube container according to any one of claims 1 to 3, wherein the intermediate layer includes a base film layer and a barrier layer.   The laminar tube container according to any one of claims 1 to 4, wherein the base film layer constituting the intermediate layer forms a pattern printing layer on at least one surface thereof. 6. The laminated tube container according to claim 1, wherein the barrier layer constituting the intermediate layer is a metal vapor deposition film or a metal oxide vapor deposition film. .

Images