JP2001301071A - Laminated tube container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated tube container having a surface susceptible to the formation of a beautiful printing pattern or the like, having strength, stiffness or the like, excellent in barrier properties against oxygen gas, steam or the like, content resistance or the like and suitable for packaging content, for example, toothpaste, food, cosmetics, medicines and the others. SOLUTION: In the laminated tube container which is composed of a laminated material constituted by successively laminating at least a surface resin layer, an intermediate layer and an inner surface resin layer and obtained by superposing the surface of the surface resin layer being the outermost layer of one end part of the laminated material and the surface of the inner surface resin layer being the innermost layer of the other end part of the laminated material one upon another and heat-sealing the opposed surfaces to form a cylindrical body part and providing a head part consisting of a shoulder part and a mouth part to one opening part of the cylindrical body part, the surface resin layer comprises a multilayered resin layer including a milk while polyethylenic resin layer and the intermediate layer comprises a barrier layer being a vapor deposition film of an inorganic oxide and the inner surface resin layer comprises a polyethylenic resin layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a laminating tube.
More specifically, the container is capable of forming a beautiful printed pattern or the like on the surface, has strength, stiffness, etc., and further has a barrier property against oxygen gas, water vapor, etc., a content resistance property, etc. Excellent, for example, toothpaste, food, cosmetics,
Lamine suitable for filling and packaging of contents such as pharmaceuticals and others
It relates to a tube container.

[0002]

2. Description of the Related Art Conventionally, a laminating tube container usually produces a laminated material by sequentially laminating at least a surface resin layer, an intermediate layer and an inner resin layer, and then uses the laminated material. Then, the surfaces of the surface resin layer and the inner surface resin layer at both ends are overlapped, and the opposing surfaces are heat-sealed to produce a cylindrical body, and thereafter, one of the cylindrical bodies is manufactured. A mouth portion, a head portion including a shoulder portion, and the like are formed in the opening portion, and further, a cap is screwed into the opening portion, and on the other hand, the content is filled from the other opening portion of the cylindrical body portion, and then, The opening is hermetically sealed to form a bottom seal, thereby manufacturing a packaged product comprising a laminating tube container. By the way, in the above-mentioned laminating tube container, usually, a product name, a manufacturer,
A printed pattern layer for displaying predetermined items such as a seller, a date of manufacture, and the like is formed. In general, the above-mentioned printed picture layer is formed in advance by a gravure printing method or the like on the back surface of a raw film such as a resin film forming a surface resin layer constituting a laminating tube container. Thereafter, this is laminated with a material constituting the intermediate layer, the inner surface resin layer and the like to produce a laminated material, and then the laminated material is used to produce a laminate tube container. ing.
Alternatively, the printed pattern layer is a surface resin layer, an intermediate layer,
And, a laminated material is manufactured by sequentially laminating the inner resin layers,
Next, on the surface of the laminated material, in advance, a gravure printing method, formed by a flexographic printing method or the like, or
The laminated material manufactured as described above is further superposed on the surfaces of the surface resin layer and the inner surface resin layer at both ends thereof, and the opposing surfaces thereof are heat-sealed.
A cylindrical body is manufactured by sealing, and thereafter, a head including an opening and a shoulder is formed in one opening of the cylindrical body to manufacture a laminating tube container. Are formed on the outer peripheral surface of the body constituting the laminating tube container by an offset printing method, a silk printing method, a transfer printing method, or the like.

[0003]

However, in the above-mentioned laminating tube container, a gravure is previously provided on the back surface of an original film such as a resin film forming a surface resin layer constituting the laminating tube container. When forming a print pattern layer by a printing method or the like, a print pattern layer is formed on a raw film such as a resin film, and then, the intermediate layer, a material constituting an inner resin layer and the like are laminated, Furthermore,
Since a laminating tube container is manufactured by forming a cylindrical body, a head and the like, for example, at the time of lamination, at the time of forming a cylindrical body,
Alternatively, when a defective product is manufactured at the time of forming a head or the like, there is a problem that a large amount of raw film is wasted. Further, when a printed pattern layer is previously formed on the back surface of an original film such as a resin film forming a surface resin layer constituting a laminating tube container, the laminating tube container using the same is used. Unless you consume all of
There is also a problem that it is not possible to transfer to a laminating tube container comprising the next new form, new product, and the like. Also,
When the above-mentioned printed picture layer is previously formed on the surface of the laminated material by a gravure printing method, a flexographic printing method, or the like, or the above-mentioned printed picture layer is formed on the outer peripheral surface of a body constituting a laminating tube container. When formed by an offset printing method or the like, generally, the outermost surface layer constituting the laminated material,
Alternatively, since the outermost surface layer of the body constituting the laminating tube container is made of a polyethylene resin film or the like, printing is performed by using a so-called fisheye of the polyethylene resin film. It is extremely difficult to form a beautiful printed picture layer or the like, because the ink constituting the picture layer is lost, and this is a serious problem in terms of print quality. Further, in the case of the above-described laminating tube container, when forming the cylindrical body or the head portion, or in the packaged product in which the contents are filled and packed, the laminating tube is used. The laminated material constituting the container is required to have strength and to have a certain waist.
The laminated material constituting the tube container has a problem in that the strength is slightly low and the stiffness is insufficient, and a defective product is produced in a laminated tube product. Further, in the case of the above-described laminating tube container, when the packaged product is directly displayed at a store such as a standing tube, the so-called low-weight stress crack occurs due to stacking during the transportation of the packaged product, and the display is performed. Sometimes, the contents gradually leak from the bottom seal. Therefore, the present invention is capable of forming a beautiful printed pattern or the like on the surface, and has strength, stiffness, etc., furthermore, excellent barrier properties against oxygen gas, water vapor, etc., excellent content resistance, etc. For example, an object of the present invention is to provide a laminating tube container suitable for filling and packing contents such as toothpaste, foods, cosmetics, pharmaceuticals and others.

[0004]

Means for Solving the Problems The present inventor has made intensive studies to solve the above-mentioned problems, and as a result, at least,
A surface resin layer, an intermediate layer, and a laminated material having a configuration in which an inner resin layer is sequentially laminated, and further, a surface resin layer surface that is the outermost layer at both ends of the laminated material and an inner resin layer surface that is the innermost layer. And heat-sealing the opposing surface to form a cylindrical body, and further, in one opening of the cylindrical body,
Shoulders, laminating provided a head made of mouth - Tochu - in blanking container, as the surface resin layer of the above, for example, density, polyethylene consisting 0.935g / cm ³ ~0.960g / cm ³ of Using a multilayer resin layer including an opalescent polyethylene-based resin layer constituted by using a resin, and, as an intermediate layer, using a barrier layer formed of a deposited film of an inorganic oxide, further, as an inner resin layer, for example, Using a polyethylene-based resin layer, a laminated material in which these are sequentially laminated is manufactured, and then, on the surface of the laminated material, for example, a desired printed pattern by flexographic printing using a flexographic printing method or the like. A layer is formed, and thereafter, a cylindrical body is manufactured from the laminated material, and further, the cylindrical body is used, and a head including a mouth, a shoulder, and the like is formed in one opening thereof. To produce laminating tube containers Then, when the packaged product is manufactured by filling and packing the contents such as toothpaste from the other opening of the tube container, waste of materials to be used is prevented, and the surface is beautiful. Has a beautiful printed pattern layer,
Furthermore, when manufacturing a laminated material, manufacturing a laminating tube container, manufacturing a packaging product for filling and packaging the contents, or storing and selling the packaging product, the strength, waist, etc., that can withstand sufficiently. In addition, it has sufficient resistance to low load stress cracks, no leakage of contents, etc., and no phenomenon such as delamination. The present invention has been found to be excellent, for example, to produce a laminating tube container useful for filling and packaging contents such as toothpaste, foods, cosmetics, pharmaceuticals and others.

That is, the present invention relates to a laminated material having a structure in which at least a surface resin layer, an intermediate layer, and an inner resin layer are sequentially laminated, and furthermore, a surface which is an outermost layer at both ends of the laminated material. The resin layer surface and the innermost resin layer surface, which is the innermost layer, are overlapped with each other, and the opposing surface is heat-sealed to form a cylindrical body. Further, a shoulder is provided at one opening of the cylindrical body. ,
In a laminating tube container provided with a head comprising a mouth, the surface resin layer is formed of a multilayer resin layer including a milky polyethylene-based resin layer, and the intermediate layer is formed of an inorganic oxide vapor-deposited film. The present invention relates to a laminating tube container characterized by comprising a barrier layer, and an inner resin layer comprising a polyethylene resin layer.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The above-mentioned present invention will be described below in more detail with reference to the drawings and the like. First, the configuration of the laminate tube container according to the present invention will be described with reference to the drawings. FIGS. 1, 2, 3 and 4 show a laminated material forming the laminate tube container according to the present invention. FIG. 4 is a schematic sectional view showing a few examples of the layer configuration of FIG.
FIG. 2 is a schematic half sectional view showing a configuration of a laminating tube container according to the present invention manufactured using the laminated material shown in FIG. 1.

First, as a laminated material A for forming a laminating tube container according to the present invention, as shown in FIG.
The basic structure is such that at least a surface resin layer 1, an intermediate layer 2, and an inner resin layer 3 are sequentially laminated from the outside. More specifically, as shown in FIG. 2, at least the surface resin layer 1, the intermediate layer 2, and the inner surface resin layer 3 are sequentially formed on the laminated material forming the laminating tube container according to the present invention. The surface resin layer 1 is composed of a multilayer resin layer 5 including an opalescent polyethylene-based resin layer 4, and the intermediate layer 2 is composed of a barrier layer 6 composed of an inorganic oxide vapor-deposited film. it can further be the inner surface resin layer 3, using the laminate a ₁ consisting of a polyethylene resin layer 7. Further, a more specific example of the laminated material forming the laminating tube container according to the present invention will be described. As shown in FIG. 3, at least a surface resin layer 1, an intermediate layer 2, and an inner resin layer 3 are provided. Are sequentially laminated, and the surface resin layer 1 further comprises a transparent polyethylene resin layer 8,
A milk-white polyethylene resin layer 4a, and a laminate 5a in which a transparent polyethylene resin layer 8 is sequentially laminated,
The intermediate layer 2 is composed of a barrier layer 6 made of a deposited film of an inorganic oxide, furthermore, it is the inner surface resin layer 3, in which can be used laminate A ₂ consisting of low-density polyethylene resin layer 7a .

Still another example of the laminated material forming the laminating tube container according to the present invention is shown in FIG. 4. As shown in FIG. 4, at least the surface resin layer 1, the intermediate layer 2, The inner resin layer 3 is formed by sequentially laminating the inner resin layer 3, and the surface resin layer 1 is further formed by sequentially laminating a transparent polyethylene resin layer 8, a milky polyethylene resin layer 4 a, and a transparent polyethylene resin layer 8. The intermediate layer 2 is composed of a barrier layer 6 composed of a vapor-deposited film of an inorganic oxide.
There may be used a laminated material A ₃ consisting of two layers of the linear low density polyethylene resin layer 7b and the low-density polyethylene resin layer 7a. Thus, the laminated materials exemplified above are only a few examples, and the present invention is not limited to the laminated materials having the above-described configurations. Can be used. For example, although not shown, a layer made of another material can be provided between the respective layers depending on the use, the content to be filled, and the like, and the layers can be arbitrarily stacked in a stacking order. is there.

Next, in the present invention, an example of manufacturing the laminating tube container according to the present invention using the above laminated material will be described. FIG. 5 shows the tube shown in FIG. FIG. 2 is a schematic half-sectional view showing the configuration of a laminating tube container according to the present invention manufactured using a laminated material A forming a tube container. In the present invention, as shown in FIG. 5, first, for example, using a flexographic ink composition on the surface of the laminated material produced above, by a flexographic printing method, characters, graphics, symbols, patterns, etc. After forming a print pattern layer (not shown) by flexographic printing, the laminate A on which the print pattern layer is formed is rolled up to form a surface resin layer surface, which is the outermost layer at both ends of the laminate material A, and an innermost layer. The inner resin layer surface is overlapped and the overlapped end is welded to form a welded portion 11.
Is formed to produce a cylindrical body 12, and the cylindrical body 12 is used as a body constituting a laminating tube container. Then, in the present invention, a head 15 comprising a shoulder portion 13, a mouth portion 14 and the like constituting a tube container is formed in a conventional manner above one opening of the cylindrical body portion 12, Thereafter, the mouth 14 of the head 15 formed above
A laminating tube container R according to the present invention is manufactured by attaching a cap 16 to be sealed. In addition, the laminating tube container R manufactured as described above is filled with an appropriate amount of the contents 17 such as toothpaste from the other opening of the cylindrical body 12, and thereafter, the opening is opened. To form a bottom welded portion 18 to manufacture a packaged product Ra comprising a laminating tube container R in which the contents 18 are filled and packaged. The above-mentioned examples are merely examples of the laminating tube container of the present invention, and the present invention is not limited thereto. Of course, in the present invention, FIGS.
It is needless to say that the laminating tube container according to the present invention can be produced in the same manner as described above by using the laminated material shown in FIG.

Next, in the present invention, the materials, manufacturing methods and the like constituting the above-mentioned laminated material, laminating tube container and the like will be described. First, in the present invention, as a material constituting the surface resin layer, as described above, since the laminated material is rolled and the overlapped end thereof is welded to produce a cylindrical body, the material is melted by heating and mutually fused. It is preferable to use a heat-sealable resin that can be extruded and can be fused. It is desirable to use a resin having heat sealability capable of forming a resin. More specifically,
Examples of the resin having properties include low-density polyethylene (LDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), linear (linear) low-density polyethylene (LLDPE), polypropylene, and ethylene-acetic acid. Vinyl copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-
Unsaturated polyolefin resin such as methyl methacrylate copolymer, ethylene-propylene copolymer, methylpentene polymer, polybutene polymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, polyethylene or polypropylene Resins such as acid-modified polyolefin-based resins modified with a carboxylic acid and others can be used.

Further, in the present invention, an ethylene-α-olefin copolymer polymerized by using a metallocene catalyst can be used as a material constituting the surface resin layer. Examples of the ethylene-α-olefin copolymer polymerized using the above metallocene catalyst include, for example, a catalyst formed by a combination of a metallocene complex and an alumoxane such as a catalyst formed by a combination of zirconocene dichloride and methylalumoxane, that is, a metallocene catalyst. Ethylene-α-olefin copolymers obtained by polymerization can be used. The metallocene catalyst has a non-uniform active site and is called a multi-site catalyst, whereas the existing catalyst is called a single-site catalyst because the active site is uniform. Specifically, the product name "Kernel" manufactured by Mitsubishi Chemical Corporation, the product name "Evolu" manufactured by Mitsui Petrochemical Industry Co., Ltd., the product name "EXACT" manufactured by EXXON CHEMICAL, USA (EXACT) ", an ethylene-α-olefin polymerized using a metallocene catalyst such as“ Affinity ”(trade name, manufactured by DOW CHEMICAL, Inc.,“ ENGAGE ”(trade name), manufactured by Dow Chemical Company, USA) Copolymers can be used.

In the present invention, the surface resin layer composed of a multilayer resin layer including a milky white polyethylene resin layer contains, for example, the above-mentioned heat-sealing resin as a main component,
To this, a white pigment and other additives are optionally added to prepare a white resin composition. On the other hand, in the same manner as above, the heat-sealing resin is used as a main component, and the white pigment is added thereto. A transparent resin composition without the addition of a transparent resin composition is prepared, and then the white resin composition and the transparent resin composition prepared above are used, for example, a molding method such as a T-die method, an inflation method, and the like. Can be manufactured. In particular,
Using the white resin composition and the transparent resin composition prepared above, for example, a feed block method, a multi-manifold
Using a multi-layer T die-casting method such as a molding method, a multi-layer inflation molding method, and further using other molding methods, a transparent polyethylene resin layer, a milky polyethylene resin layer, and a transparent polyethylene resin layer. 3 of resin layer
A surface resin layer composed of a laminate in which layers are sequentially laminated can be formed.

In the present invention, by using a multilayer resin layer containing the above-mentioned milky polyethylene resin layer as the surface resin layer, for example, the transparent polyethylene resin existing on the outermost surface thereof can be used. The layer can smooth and flatten the uneven surface called fisheye by the polyethylene resin layer constituting the milky polyethylene resin layer, thereby printing by the gravure printing method or the flexo printing method or the like. Suitability can be greatly improved, the occurrence of ink that constitutes the print pattern layer can be prevented, and a very beautiful print pattern layer can be formed. Is what you can do. Furthermore, in the present invention, when the surface resin layer is formed, the density of 0.935 g is used as the polyethylene resin constituting the milky white polyethylene resin layer.
/ Cm ³ when using the polyethylene resin consisting ～0.960G / cm ^3, the strength, those having the advantage of being able to produce a good laminate to the waist or the like. Furthermore, by using a laminated material having excellent strength and stiffness as described above, the laminating tube container can be formed at the time of forming a tubular body or at the time of forming a head, etc. In a packaged product in which a product is filled and packed, it is possible to prevent the occurrence of defective products and the like. In the present invention, the thickness of the surface resin layer is about 25 μm to 300 μm, preferably 30 μm to 150 μm.
The order of μm is desirable. Further, in the present invention,
In the surface resin layer composed of a laminate obtained by sequentially laminating three layers of the transparent polyethylene resin layer, the milky polyethylene resin layer, and the transparent polyethylene resin layer, the transparent polyethylene resin constituting the front and back surfaces The thickness of the layer is about 10 μm to 50 μm, and the thickness of the milky polyethylene-based resin layer constituting the middle is 50 μm to 130 μm.
The m-position is preferred.

Next, in the present invention, the material constituting the inner resin layer is, similarly to the material constituting the above-mentioned surface resin layer, a material which can be melted by heat and can be fused to each other. As long as molding is possible, for example,
Low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), linear (linear) low density polyethylene (LLDPE), polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene -Ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, methylpentene polymer, polyolefin resin such as polyethylene or polypropylene is converted to acrylic acid, methacrylic acid. Resin such as acid-modified polyolefin resin, polyvinyl acetate resin, polyester resin, polystyrene resin, etc., modified with unsaturated carboxylic acid such as maleic acid, maleic anhydride, fumaric acid, itaconic acid, etc. Consisting of one or more of It is possible to use the fat.

Further, in the present invention, an ethylene-α-olefin copolymer polymerized by using a metallocene catalyst may be used as the material constituting the inner resin layer in the same manner as the material constituting the surface resin layer. Can be used.
Ethylene-α · polymerized using the above metallocene catalyst
Examples of the olefin copolymer include, for example, a catalyst obtained by combining a metallocene complex such as a catalyst obtained by combining zirconocene dichloride and methylalumoxane with an alumoxane, that is, an ethylene-α-olefin copolymer obtained by polymerization using a metallocene catalyst. Polymers can be used. The metallocene catalyst has a non-uniform active site and is called a multi-site catalyst, whereas the existing catalyst is called a single-site catalyst because the active site is uniform. Specifically, Mitsubishi Chemical Corporation's trade name "Kernel", Mitsui Petrochemical Industry Co., Ltd. trade name "Evolu", USA, Exxon Chemical (EXX)
"EXACT" (trade name, manufactured by ON CHEMICAL), Dow Chemical, USA
"Affinity- (AF)
FINITY), brand name "ENGAGE (ENGAG)
E) ethylene-polymerized using a metallocene catalyst such as
α-Olefin copolymer can be used.

In the present invention, for example, the inner resin layer composed of a polyethylene resin layer contains, as a main component, one or more of the above-mentioned resins, and optionally contains desired additives. To prepare a resin composition,
Using the resin composition prepared as described above, it can be produced by a molding method such as a T-die method, an inflation method, and the like. In the present invention, the inner resin layer composed of a polyethylene resin layer is, specifically, a low-density polyethylene resin or a linear low-density polyethylene resin as a main component, and optionally adding a desired additive thereto. To prepare a low-density polyethylene-based resin composition or a linear low-density polyethylene-based resin composition, and then using the low-density polyethylene-based resin composition or the linear low-density polyethylene-based resin composition prepared above, For example, a low-density polyethylene resin layer or a linear low-density polyethylene resin layer manufactured using a molding method such as a T-die method, an inflation method, or the like can be used. Further, in the present invention, as another example, the low-density polyethylene resin composition and the linear low-density polyethylene resin composition prepared above are used as the inner resin layer composed of the polyethylene resin layer. For example, a multilayer T die-casting method such as a feed block method or a multi-manifold method, or a multilayer inflation molding method,
A linear low-density polyethylene-based resin layer and a low-density polyethylene-based resin layer manufactured using other molding methods;
An inner resin layer composed of a layer can be used. In the above, the low-density polyethylene-based resin layer constituting the inner resin layer is excellent in low odor of the contents, and the linear low-density polyethylene-based resin layer constituting the inner resin layer is excellent in strength and the like. Etc. can be improved.
Therefore, when using the inner resin layer composed of two layers of the linear low-density polyethylene resin layer and the low-density polyethylene resin layer, the low-density polyethylene resin layer is disposed on the side in contact with the contents. Is preferable.

Further, in the present invention, when a linear low-density polyethylene resin is used as the resin constituting the inner resin layer as described above, the linear low-density polyethylene resin has an adhesive property. In order to prevent the deterioration of the environmental stress cracking resistance, there is an advantage that the propagation of the fracture is small and the impact resistance is improved because of the fact that the inner layer is in constant contact with the contents. This has the advantage that it is also effective. Further, in the present invention, other resins can be blended with the linear low-density polyethylene-based resin. For example, by blending an ethylene-butene copolymer or the like, the heat-resistance is slightly lower in a high-temperature environment. Although there is a tendency that the seal stability tends to deteriorate, there is an advantage that the tearing property is improved and contributes to easy opening. Further, in the present invention, the linear low-density polyethylene resin as a resin having heat sealability as described above includes, specifically, an ethylene-α-olefin copolymer polymerized using a metallocene catalyst. Coalescing can be used.

Examples of the ethylene-α-olefin copolymer polymerized by using the metallocene catalyst include a catalyst formed by a combination of a metallocene complex and an alumoxane such as the above-described catalyst formed by a combination of zirconocene dichloride and methylalumoxane. An ethylene-α-olefin copolymer obtained by polymerization using a metallocene catalyst can be used. The metallocene catalyst has a non-uniform active site and is called a multi-site catalyst, whereas the existing catalyst is called a single-site catalyst because the active site is uniform. Specifically, the product name "Kernel" manufactured by Mitsubishi Chemical Corporation, the product name "Evolu" manufactured by Mitsui Petrochemical Industry Co., Ltd., the product name "EXACT" manufactured by EXXON CHEMICAL, USA (EXACT) ", Dow Chemical, USA (D
OW CHEMICAL) brand name “AFFINITY”, brand name “ENGAGE (ENG)
AGE) and the like. An ethylene-α-olefin copolymer polymerized using a metallocene catalyst such as “AGE)” can be used.
In the present invention, when an ethylene-α-olefin copolymer polymerized by using the above-mentioned metallocene catalyst is used, there is an advantage that a low-temperature heat sealability is possible.

Next, in the present invention, the material constituting the intermediate layer may be, for example, a material having excellent mechanical, physical, chemical and other properties as a basic material constituting the laminating tube container. In particular, a resin film or sheet having strength, toughness, and heat resistance can be used. Specifically, for example, polyester resin, polyamide resin, polyaramid resin, polyolefin resin, polycarbonate resin, polyacetal resin, fluorine resin, and other tough resin films or Sheets, etc. can be used. Thus, as the resin film or sheet, any one of an unstretched film and a stretched film stretched in a uniaxial or biaxial direction can be used. The thickness of the film is about 5 μm to 100 μm, preferably 10 μm
About 50 μm is desirable.

In the present invention, the material constituting the intermediate layer may be, for example, a material having a barrier property against oxygen gas or water vapor, a material having a light-shielding property against sunlight or the like, or a property having a scent-retaining property against contents. And the like can be used. Specifically, as the above-mentioned barrier material, for example, a barrier layer composed of a deposited film of an inorganic oxide can be used. The barrier layer composed of a vapor-deposited film of an inorganic oxide as the barrier material will be described in more detail.Examples of the barrier layer composed of a vapor-deposited film of the inorganic oxide include, for example, silicon oxide and inorganic oxides such as aluminum oxide. A resin film or sheet having a deposited film can be used. For example, a physical vapor deposition method (Physical Vap method) such as a vacuum deposition method, a sputtering method, an ion plating method, and a cluster ion beam method.
or Deposition method, PVD method) or a chemical vapor deposition method such as plasma chemical vapor deposition method, thermochemical vapor deposition method, or photochemical vapor deposition method.
Use of a resin film or sheet in which a vapor-deposited thin film of an inorganic oxide such as silicon oxide or aluminum oxide is formed on a resin film or sheet by utilizing a vapor deposition method, a CVD method, or the like. Can be. More specifically, in the above PVD method,
For example, using a take-up evaporator, in a vacuum chamber, a resin film or sheet from an unwind roll was placed into an evaporation chamber where it was heated in a crucible. The evaporation source is evaporated and, if necessary, oxygen or the like is blown out from the oxygen blow-out port, while the resin film or sheet on the cooled coating drum is
An inorganic oxide vapor-deposited film such as aluminum oxide or silicon oxide is formed through a mask, and then the resin film or sheet on which the vapor-deposited thin film is formed is taken up on a take-up roll. A resin film or sheet having the above vapor deposition film can be manufactured. On the other hand, in the above-described CVD method, the resin film or sheet unreeled from the unwinding roll disposed in the vapor deposition chamber is cooled in the vapor deposition chamber, and the vapor deposition material is deposited on the peripheral surface of the electrode drum. A mixed gas composed of an organic silicon compound, an oxygen gas, and an inert gas as a monomer gas supplied from a volatilization supply device is introduced, and a resin film or sheet having a silicon oxide deposited thin film formed by plasma is manufactured. be able to. Thus, in the present invention, the permeation of oxygen gas, water vapor, or the like is prevented in a resin film or sheet having a vapor-deposited thin film of an inorganic oxide such as aluminum oxide or silicon oxide as described above. However, it functions as a barrier-based substrate for these.

In the above, the thickness of the deposited thin film of the inorganic oxide is usually 5 to obtain a sufficient barrier property.
It is preferably about 0 ° to 3000 °, and particularly preferably about 100 ° to 2000 ° in the present invention. More specifically, in the above-described PVD method, the thickness of the deposited film of aluminum oxide is 200 to 1000 °.
, Preferably about 300 ° to 500 °, and in the above CVD method, the thickness of the deposited silicon oxide film is about 50 ° to 500 °, preferably 100 °.
It is desirable to be about {300}. In the above, when the thickness of the deposited film of the inorganic oxide generally exceeds 2000 °, cracks and the like are liable to be formed in the deposited film of the inorganic oxide, and there is a risk that the barrier property is reduced by warpage. At the same time, it is not preferable because of the problem that the material cost is high, and if it is less than 100 °, it is difficult to perform its function, which is not preferable. Examples of the resin film or sheet supporting the inorganic oxide vapor-deposited film include a polyester film, a polyamide film, a polyolefin film, a polyvinyl chloride film, a polycarbonate film, a polyvinylidene chloride film, A polyvinyl alcohol film, a saponified ethylene-vinyl acetate copolymer film, and the like can be used. The surface of the resin film described above can be coated in advance with, for example, a deposition primer or the like in order to enhance the adhesion of the deposited film, and other necessary pretreatment can be optionally performed. is there. In the present invention, the above-mentioned CVD
An organic silicon compound or a derivative thereof can be used as a vapor deposition material by the method.

In the present invention, examples of the barrier material or the material having a scent-retaining property include polyvinylidene chloride resin, polyester resin, MXD
Polyamide resin, ethylene-vinyl acetate copolymer (vinyl acetate is about 79-92 wt%), ethylene-vinyl alcohol copolymer having an ethylene content of 25-50 mol%, polyvinyl alcohol, poly A resin film or sheet having a high gas barrier property such as acrylonitrile or the like, or a coating film can be used.

Further, in the present invention, the material constituting the intermediate layer may be, for example, a light-shielding material having a property of blocking light such as sunlight, or a property of impermeable to water vapor or water. A water-resistant material may be used, which may be a single substrate or a composite substrate obtained by combining two or more types of substrates. Specifically, for example, water-resistant materials having barrier properties such as water vapor and water include, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, and ethylene-propylene. A resin film or sheet of a polymer or the like can be used, and as a light-shielding material, for example, a coloring agent such as a pigment is added to a resin, and further, a desired additive such as other is added and kneaded. Various colored resin films or sheets having a light-shielding property formed into a film can be used. These materials can be used alone or in combination of two or more. The above film or sheet
Although the thickness of the gate is arbitrary, it is usually preferably about 5 μm to 300 μm, more preferably about 10 μm to 100 μm.

In general, a laminated tube container is subjected to severe physical and chemical conditions. Therefore, the laminated material constituting such a container is required to have strict packaging suitability and to be deformed. Prevention strength, drop impact strength, anti-pinho
Properties, heat resistance, sealing, quality maintenance, workability, hygiene,
Various other conditions are required. For this reason, in the present invention, in addition to the above-described materials, other materials satisfying the above-described various 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 or methacrylic acid copolymer, methylpentene polymer, polybutene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer, poly (meth) acryl Resin, polyacrylonitrile 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
And any other known resin film or sheet. In addition, for example, a film such as cellophane, synthetic paper, or the like can be used. In the present invention, the above-mentioned film or sheet may be any of unstretched and uniaxially or biaxially stretched. The thickness is arbitrary, but can be selected from a range of several μm to 300 μm. Further, in the present invention, as the film or sheet, extrusion film formation,
Any film such as an inflation film or a coating film may be used.

Specific examples of the above-mentioned other materials include a barrier property against oxygen gas and water vapor, and / or a fragrance-retaining property with little adsorption of fragrance components and the like contained in the contents to be filled and packaged. It is possible to use a resin which is rich in the properties and the like, does not cause a change in taste, smell and the like, and is extrudable. Specifically, for example, polyacrylic resin, polymethacrylic resin, polyacrylonitrile resin, polymethacrylonitrile resin, polystyrene resin, polycarbonate resin, polyethylene terephthalate resin or the like Polyester resins such as a resin obtained by copolymerizing or modifying a part of an ethylene component and / or a terephthalate component with another di- or more polyhydric alcohol component or dicarboxylic acid component, or a polyethylene naphthalate resin. Resins such as resins, polyamide resins, saponified ethylene-vinyl acetate copolymers, polyvinyl alcohol resins, polyvinyl chloride resins, polyvinylidene chloride resins, and the like can be used. Thus, in the present invention, among the above resins, it is desirable to use a resin having a scent-retaining property and a barrier property against oxygen gas or water vapor, and specifically, for example, ethylene-vinyl acetate 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 a resin rich in fragrance retention and barrier properties.

Next, in the above-mentioned present invention, a method for producing a laminated material for forming a laminate tube container according to the present invention using the above-mentioned materials will be described. The laminating method used when manufacturing ordinary packaging materials, for example, wet laminating
Performing by any method, such as an extrusion method, a dry lamination method, a solventless dry lamination method, an extrusion lamination method, a T-die co-extrusion molding method, a co-extrusion lamination method, an inflation method, and the like. Can be. Thus, in the present invention, when performing the above lamination, if necessary, a pretreatment such as a corona treatment or an ozone treatment can be applied to the film. (Urethane type), polyethyleneimine type, polybutadiene type, organic titanium type etc.
Coating agents or known anchor coating agents such as polyurethane-based, polyacrylic-based, polyester-based, epoxy-based, polyvinyl acetate-based, cellulose-based, and other laminating adhesives; -Adhesives for papers and the like can be optionally used.

In the above-described method for producing a laminated material, the extruded resin constituting the adhesive resin layer at the time of extruding and laminating is, for example, polyethylene,
Ethylene-α-olefin copolymer, polypropylene,
Copolymers of ethylene and unsaturated carboxylic acids such as polybutene, polyisobutene, polyisobutylene, polybutadiene, polyisoprene, ethylene-methacrylic acid copolymer, or ethylene-acrylic acid copolymer, or acid-modified polyolefins obtained by modifying them A series resin, 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 at the time of dry lamination, specifically,
Two-component curable urethane adhesives, polyester urethane adhesives, polyether urethane adhesives, acrylic adhesives, polyester adhesives, polyamide adhesives, polyvinyl acetate adhesives used in dry laminates, etc. An adhesive, an ethoxy-based adhesive, a rubber-based adhesive, or the like can be used.

Next, in the present invention, when manufacturing the laminating tube container according to the present invention, for example, as a method of heat sealing when manufacturing the cylindrical body,
For example, a bar seal, a rotary roll seal, a belt seal
Seal, impulse seal, high frequency seal, ultrasonic seal,
It can be performed by a known method such as a flame seal.

Next, in the present invention, a laminated material for forming the laminating tube container manufactured as described above is used. First, a gravure printing method, a flexographic printing method, or the like is used on the surface of the laminated material. Using gravure ink, flexo ink, etc., print and form a printed pattern layer consisting of characters, figures, symbols, patterns, etc., then roll up the laminated material on which the printed pattern layer is formed and weld the polymerized end Then, a cylindrical body constituting the extrusion tube is manufactured, and then, for example, high-density polyethylene or the like is formed above the cylindrical body by injection molding, compression molding, or other molding methods. A head comprising a shoulder and a mouth is formed by welding, and then a cap is attached to the mouth constituting the head, whereby the laminating tube container according to the present invention can be manufactured. Thus, in the present invention, the contents to be filled and packed are filled through the opening at the lower end of the laminating tube container manufactured as described above, and then the opening is heat-sealed to form the bottom welding portion. Can be manufactured to produce a packaged product comprising a laminating tube container. In the above, the contents to be filled and packaged include, for example, toothpaste, cosmetics, paste, paste, paste wasabi, cream, paint, ointment, medicine, and the like. In the above, in addition to the above-mentioned high-density polyethylene, ethylene polymerized using the above-described metallocene catalyst is used as a material constituting a head portion of a laminating tube container including a shoulder portion and a mouth portion. An α-olefin copolymer or the like can also be used. In the above, instead of performing gravure printing, flexo printing, or the like on the surface of the plain laminated material, it is also possible to perform printing on the surface of the plain cylindrical portion by offset printing or the like.

In the above description, flexographic printing is a type of letterpress printing, in which a flexible resin or rubber letterpress is used, and a solvent-dried type flexographic ink is used to form characters, figures, symbols, pictures, and the like. The desired printed pattern layer is formed by printing. In addition, as the above-mentioned flexo ink, an evaporation-drying ink mainly containing an alcohol-based or water-based vehicle, which does not relatively invade a rubber letterpress or the like, or an ultraviolet-curable ink can be used. is there. Thus, in the present invention, by using a flexographic printing method or the like, a laminated material is manufactured in a plain state, and is directly printed on the surface of the plain laminated material or the plain cylindrical part to obtain a desired material. Since the print pattern layer can be formed, batch production of the raw material is possible, and the production efficiency can be increased, the production loss can be reduced, and the required quantity can be printed according to the order. In addition, manufacturing loss can be reduced and a short delivery time can be achieved. That is, usually, a desired printed pattern layer is formed by printing on a raw film such as a plastic film, and thereafter, another plastic film or the like is laminated thereon,
Since we manufacture laminated materials with printed pictures, the lead time from receiving orders is long, and the raw material lot is identified for each picture, which significantly disadvantages the production process and production costs. The present invention has an advantage that such a problem can be solved.

[0031]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. Example 1 (1). A biaxially stretched polyethylene terephthalate film having a thickness of 12 μm and a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm having a silicon oxide vapor deposition film on one side are opposed to each other with the silicon oxide vapor deposition film facing the surface. , 2
Dry lamination was carried out using a liquid-curable urethane-based adhesive and laminated. Next, on the biaxially stretched polyethylene terephthalate film surface of the biaxially stretched polyethylene terephthalate film having the silicon oxide deposited film laminated above,
The low-density polyethylene film having a thickness of 30 μm was faced with the corona-discharge treated surface, and both were dry-laminated using a two-component curable urethane-based adhesive and laminated. (2). On the other hand, a resin composition mainly composed of a linear low-density polyethylene resin polymerized by a single-site catalyst, and a low-pressure high-density polyethylene resin (density = 0.95)
1, a melt index, MI = 1.0) as a main component, a white resin composition containing a white pigment (containing 8% by weight), and a multilayer inflation method to form a multilayer film. A multilayered opalescent polyethylene having a thickness of 140 μm including a transparent linear low-density polyethylene resin layer having a thickness of 30 μm, a milky low-density polyethylene resin layer having a thickness of 80 μm, and a transparent linear low-density polyethylene resin layer having a thickness of 30 μm. A film was produced, and one surface of the film was subjected to a corona discharge treatment to form a corona discharge treated surface. (3). Next, on the corona discharge treated surface of the multilayer milky-white polyethylene film produced in the above (2), using an ethylene-methacrylic acid copolymer, this was laminated in the above (1) while melt-extruding it to 35 μm. The low-density polyethylene films were laminated by extrusion laminating with their faces facing each other. Furthermore, after laminating as described above, a two-component curable urethane-based adhesive was coated on the other biaxially stretched polyethylene terephthalate film surface, and then this was coated with an ethylene-methacrylic acid copolymer to a thickness of 35 μm. While being melt-extruded, a 70 μm-thick low-density polyethylene film was extruded, laminated, and laminated to produce a laminated material. Next, on the surface of the multilayer milky polyethylene film of the laminated material produced above, after corona discharge treatment, on the corona treated surface, using an ultraviolet curable flexographic ink composition,
By flexo printing method, to form a desired printed picture layer,
A laminate with a printed picture layer was manufactured. (4). Next, using the laminated material manufactured above,
The laminated material is punched to produce a blank plate, and the back bonded portion is heat-sealed at 215 ° C. for 3 seconds under heat welding conditions of 3 kg / cm ² so that the inner surface is on the inner surface side. hand,
A cylindrical body serving as a body of a tube container having a diameter of 35 mm and a height of 160 mm was manufactured. Next, the cylindrical body manufactured as described above is mounted on a mandrel for molding a laminating tube container, and then, at one end of the cylindrical body, a frusto-conical shoulder portion and a continuous narrow neck are connected by a conventional method. The head consisting of the mouth and neck was molded by compression molding at a resin temperature of 245 ° C. using a high-density polyethylene composition obtained by adding 2.0% by weight of an opalescent pigment to 98.0 parts by weight of high-density polyethylene. Thus, a laminating tube container according to the present invention was manufactured. Next, a cap is spirally wound around the mouth and neck of the cylindrical body having the above-mentioned head, and then 150 g of commercially available toothpaste is filled from the other opening of the cylindrical body. Heat sealing was performed to produce a packaged product comprising a laminating tube container.

Example 2 In the above-mentioned Example 1, instead of forming a desired printed picture layer on the surface of the multilayer opalescent polyethylene film of the laminated material by flexographic printing, in the same manner as in the above-mentioned Example 1, After manufacturing the laminated material, a cylinder serving as the body of the laminating tube container is produced in the same manner as in Example 1 by using a plain laminated material that does not form a desired printed pattern layer by flexographic printing. A body is manufactured, and the cylindrical body is used to form a head comprising a shoulder and a narrow neck at one end of the cylindrical body to manufacture a laminating tube container. Then, on the outer peripheral surface of the body of the laminating tube container, using the ultraviolet-curable ink composition in the same manner as in Example 1 above, a desired printing pattern layer is formed by offset printing. Formed according to the present invention with printed pattern layer To produce a laminating tube container. Next, a cap is spirally wound around the mouth and neck of the cylinder having the above-mentioned head, and then 150 g of commercially available toothpaste is passed through the other opening of the cylinder.
Then, the opening of the cylindrical body was heat-sealed to produce a packaged product comprising a laminating tube container.

Example 3 Instead of extruding and laminating a low-density polyethylene film having a thickness of 70 μm on the surface of a biaxially stretched polyethylene terephthalate film in Example 1 described above, instead of manufacturing a laminated material by laminating the film, First, using a resin composition mainly composed of a linear low-density polyethylene resin polymerized by a single-site catalyst and a resin composition mainly composed of a high-density low-density polyethylene resin by a multilayer inflation method. A multi-layer film is formed, and a film thickness of 10 comprising two layers, a linear low-density polyethylene resin layer having a thickness of 70 μm and a high-pressure low-density polyethylene resin layer having a thickness of 30 μm.
A multilayer polyethylene film having a thickness of 100 μm was used in place of the low-density polyethylene film having a thickness of 70 μm, and a multilayer polyethylene film having a thickness of 100 μm was used instead of the low-density polyethylene film having a thickness of 70 μm. In exactly the same way, the same laminated material as in Example 1 above,
Laminate tube containers and packaging products were manufactured. Also,
A laminate, a laminating tube container, and a packaged product were manufactured in the same manner as in Example 2 described above.

Embodiment 4 (1). After coating a two-component curable urethane-based adhesive on the surface of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, using an ethylene-methacrylic acid copolymer, melt-extruding it to 35 μm, Thickness 7
A low-density polyethylene film having a thickness of 0 μm was extruded, laminated, and laminated with the discharge-treated surfaces at that time facing each other. Next, a 12 μm-thick biaxially stretched polyethylene terephthalate film having a silicon oxide vapor deposited film on one side is provided on the surface of the laminated biaxially stretched polyethylene terephthalate film, and the surface of the silicon oxide vapor deposited film. And laminated by dry lamination using a two-component curable urethane-based adhesive. Further, a low-density polyethylene film having a thickness of 30 μm is formed on the biaxially stretched polyethylene terephthalate film surface having the silicon oxide vapor-deposited film laminated thereon,
The corona discharge treated surfaces were opposed to each other, and the two were laminated by dry lamination using a two-component curable urethane-based adhesive. (2). On the other hand, a resin composition mainly composed of a linear low-density polyethylene resin polymerized by a single-site catalyst, and a low-pressure high-density polyethylene resin (density = 0.95)
1, a melt index, MI = 1.0) as a main component, a white resin composition containing a white pigment (containing 8% by weight), and a multilayer inflation method to form a multilayer film. A multilayered opalescent polyethylene having a thickness of 140 μm including a transparent linear low-density polyethylene resin layer having a thickness of 30 μm, a milky low-density polyethylene resin layer having a thickness of 80 μm, and a transparent linear low-density polyethylene resin layer having a thickness of 30 μm. A film was produced, and one surface of the film was subjected to a corona discharge treatment to form a corona discharge treated surface. (3). Next, on the corona discharge treated surface of the multilayer milky-white polyethylene film produced in the above (2), using an ethylene-methacrylic acid copolymer, this was laminated in the above (1) while melt-extruding it to 35 μm. The low-density polyethylene film was laminated with an extruded laminate with the surfaces facing each other to produce a laminate. Next, on the surface of the multilayer opalescent polyethylene film of the laminated material produced above, after corona discharge treatment, on the corona treated surface, using an ultraviolet curable flexographic ink composition, by flexographic printing method, the desired printed picture layer Was formed to produce a laminated material having a printed picture layer. (4). Next, using the laminated material manufactured above,
The laminated material is punched to produce a blank plate, and the back bonded portion is heat-sealed at 215 ° C. for 3 seconds under heat welding conditions of 3 kg / cm ² so that the inner surface is on the inner surface side. hand,
A cylindrical body serving as a body of a tube container having a diameter of 35 mm and a height of 160 mm was manufactured. Next, the cylindrical body manufactured as described above is mounted on a mandrel for molding a laminating tube container, and then, at one end of the cylindrical body, a frustoconical shoulder and a continuous narrow neck are connected in a conventional manner. The head consisting of the mouth and neck was molded by compression molding at a resin temperature of 245 ° C. using a high-density polyethylene composition obtained by adding 2.0% by weight of an opalescent pigment to 98.0 parts by weight of high-density polyethylene. Thus, a laminating tube container according to the present invention was manufactured. Next, a cap is spirally wound around the mouth and neck of the cylindrical body having the above-mentioned head, and then 150 g of commercially available toothpaste is filled from the other opening of the cylindrical body. Heat sealing was performed to produce a packaged product comprising a laminating tube container.

Example 5 In Example 4 described above, instead of forming a desired printed picture layer by the flexographic printing method on the surface of the multilayer opalescent polyethylene film of the laminated material, in the same manner as in Example 4 described above, After manufacturing the laminated material, a cylinder to be the body of the laminating tube container is used in the same manner as in Example 4 above, using a plain laminated material that does not form a desired printed pattern layer by flexographic printing. A body is manufactured, and the cylindrical body is used to form a head comprising a shoulder and a narrow neck at one end of the cylindrical body to manufacture a laminating tube container. Then, on the outer peripheral surface of the body of the laminating tube container, a desired printing pattern layer was formed by offset printing using an ultraviolet curable ink composition in the same manner as in Example 4 above. Formed according to the present invention with printed pattern layer To produce a laminating tube container. Next, a cap is spirally wound around the mouth and neck of the cylinder having the above-mentioned head, and then 150 g of commercially available toothpaste is passed through the other opening of the cylinder.
Then, the opening of the cylindrical body was heat-sealed to produce a packaged product comprising a laminating tube container.

Example 6 Instead of extruding and laminating a low-density polyethylene film having a thickness of 70 μm on the surface of a biaxially stretched polyethylene terephthalate film in Example 4 above, instead of manufacturing a laminated material by laminating, First, using a resin composition mainly composed of a linear low-density polyethylene resin polymerized by a single-site catalyst and a resin composition mainly composed of a high-density low-density polyethylene resin by a multilayer inflation method. A multi-layer film is formed, and a film thickness of 10 comprising two layers, a linear low-density polyethylene resin layer having a thickness of 70 μm and a high-pressure low-density polyethylene resin layer having a thickness of 30 μm.
A multilayer polyethylene film having a thickness of 100 μm was used in place of the low-density polyethylene film having a thickness of 70 μm, and then a multilayer polyethylene film having a thickness of 100 μm was used. In exactly the same way, the same laminated material as in Example 4 above,
Laminate tube containers and packaging products were manufactured. Also,
In the same manner as in Example 5, a laminate, a laminating tube container, and a packaged product similar to those in Example 5 were produced.

[0037]

As apparent from the above description, the present invention
At least a surface resin layer, an intermediate layer, and a laminated material having a configuration in which an inner resin layer is sequentially laminated, and further, a surface resin layer surface that is the outermost layer at both ends of the laminated material and an inner resin that is the innermost layer A layered surface is overlapped, and the opposite surface is heat-sealed to form a cylindrical body, and a head including a shoulder and a mouth is provided at one opening of the cylindrical body. Lamine
In the tube container, for example, the surface resin layer has a density of 0.935 g / cm ^{3 to} 0.960 g /
Using a multilayer resin layer including an opalescent polyethylene-based resin layer composed using a polyethylene resin consisting of cm ^3, and, as an intermediate layer, using a barrier layer composed of a vapor-deposited film of an inorganic oxide, As the inner resin layer, for example,
Using a polyethylene-based resin layer, to produce a laminated material by sequentially laminating these, then to produce a tubular body from the laminated material, further using the tubular body, A laminating tube container is manufactured by forming a head including a mouth, a shoulder, and the like in one opening, and thereafter, for example, a flexographic printing method or the like is formed on the surface of the laminating tube container. To form a desired print pattern layer by flexographic printing,
Then, from the other opening of the tube container, for example,
Filling and packaging contents such as toothpaste to manufacture packaging products, prevent waste of materials used, and have a beautiful printed pattern layer on the surface. -It has sufficient strength, waist, etc. to be able to withstand the stress at the time of manufacture of the tube container, manufacture of the packaged product that fills and packs the contents, or storage and sale of the packaged product. It has sufficient resistance to no leakage of contents, and no phenomenon such as delamination.
Excellent in fragrance retention and preservability of the contents, for example, it can produce a laminating tube container useful for filling and packaging contents such as toothpaste, food, cosmetics, pharmaceuticals, etc. It is.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a layer structure of a laminated material forming a laminating tube container according to the present invention.

FIG. 2 is a schematic cross-sectional view showing an example of a layer structure of a laminated material forming a laminating tube container according to the present invention.

FIG. 3 is a schematic cross-sectional view showing an example of a layer structure of a laminated material forming a laminating tube container according to the present invention.

FIG. 4 is a schematic cross-sectional view showing an example of a layer structure of a laminated material forming a laminating tube container according to the present invention.

FIG. 5 is a schematic half-sectional view showing the configuration of a laminating tube container according to the present invention manufactured using the laminated material shown in FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Surface resin layer 2 Intermediate layer 3 Inner resin layer 4 Milky-white polyethylene resin layer 4a Milky-white polyethylene resin layer 5 Multilayer resin layer 5a Laminate 6 Barrier layer 7 Polyethylene resin layer 7a Low-density polyethylene resin layer 7b Linear low-density polyethylene resin layer 8 transparent polyethylene resin layer 11 welded portion 12 the cylindrical body 13 the shoulder portion 14 necked portion 15 head 16 cap 17 contents 18 bottom welded part A laminate A ₁ laminate A ₂ laminate A ₃ laminate R Laminate tube container Ra Packaging product

Continuation of front page (72) Inventor Chizuru Maseda 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. (reference) 3E065 AA02 BA16 BA40 BB03 CA09 CA11 DA04 DB03 DC01 DD01 DD05 FA05 FA15 GA01 GA10 HA06 4F100 AA17D AA20 AK04A AK04B AK04C AK04E AK06E AK42 AK63E AK70 AT00 BA05 BA07 BA10A CA13 DA02 EH23 EH66D EJ38 EJ55 GB17 HB31 JA13B JD01D JD02 JL10B JN01A JN01C

Claims (4)

[Claims] 1. A laminated material having a structure in which at least a surface resin layer, an intermediate layer, and an inner resin layer are sequentially laminated, and further comprising a surface resin layer surface, which is the outermost layer at both ends of the laminated material, and An inner resin layer surface as an inner layer is overlapped, and the opposite surface is heat-sealed to form a cylindrical body. Further, one opening of the cylindrical body is provided with a shoulder and a mouth. Wherein the surface resin layer comprises a multilayer resin layer including a milky polyethylene resin layer, and the intermediate layer comprises a barrier layer comprising an inorganic oxide vapor-deposited film. Wherein the inner resin layer comprises a polyethylene resin layer. 2. The method according to claim 1, wherein the surface resin layer comprises a laminate in which a transparent polyethylene resin layer, a milky polyethylene resin layer, and a transparent polyethylene resin layer are sequentially laminated. Laminating tube container. 3. The polyethylene resin constituting the milky polyethylene resin layer has a density of 0.935 g / cm ^{3 to} 0.1 g / cm ³ .
2. The laminating tube container according to claim 1, wherein the container comprises 960 g / cm ³ . 4. An inner resin layer comprising a low-density polyethylene resin layer, a linear low-density polyethylene resin layer, or two layers of a linear low-density polyethylene resin layer and a low-density polyethylene resin layer. The laminating tube container according to claim 1.