JP2022031795A - Vapor deposition resin film, laminate provided with vapor deposition resin film, and packaging container provided with the laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vapor deposition resin film that enables the production of a package with reduced environmental load and improved sanitary performance.

SOLUTION: A vapor deposition resin film according to the present invention has a polyester film and a vapor-deposited film. The polyester film contains a chemically recycled polyester. In a molecular weight distribution curve found by GPC measurement of the polyester film, the area of a region with a molecular weight of 1000 or less is 1.8% or less in the total peak area.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a vapor-deposited resin film, a laminate provided with the vapor-deposited resin film, and a packaging container provided with the laminate.

Conventionally, a film (resin film) made of a resin material has been used as a base material (hereinafter referred to as a base material for a packaging material) constituting a laminate used for manufacturing a packaging container such as a packaging bag. As such a film, for example, a polyester film is widely used because it is excellent in mechanical properties, chemical stability, heat resistance and transparency, and is inexpensive.

The fossil fuel polyester used in the production of polyester films is a copolymer of a dicarboxylic acid compound and a diol compound. These compounds are produced from petroleum, a fossil fuel.
In recent years, for the purpose of reducing environmental burdens such as reducing carbon dioxide emissions, instead of fossil fuel polyester, polyester obtained by mechanically recycling polyester contained in used packaging containers (hereinafter referred to as mechanical recycled polyester) has been used. Packaging containers are manufactured using these materials (see Patent Document 1).

However, the degree of contamination of the packaging container varies depending on the filled contents and the storage environment. Consumers may be concerned about hygiene in packaging containers made of mechanically recycled polyester. Therefore, from the viewpoint of hygiene, the use of chemically recycled polyester is being considered. Chemically recycled polyester is more hygienic because it is obtained by decomposing polyester contained in used packaging containers to the monomer level, removing contaminants, and then polymerizing again.

Japanese Unexamined Patent Publication No. 2017-007175

The laminate used for manufacturing the above-mentioned packaging container includes at least a base material made of a polyester film and a sealant layer, and is stored in a rolled state. When the polyester film used as a base material or the like contains a low-molecular-weight polymer, the low-molecular-weight polymer moves to the sealant layer side during storage of the roll-shaped laminate, and the low-molecular-weight polymer is formed. The present inventors have found a new problem that the content may be mixed with the content to be filled in the packaging container and the hygiene of the content may be impaired.

The present invention has been made to solve the above problems. An object to be solved by the present invention is to provide a vapor-deposited resin film that can reduce the environmental load and enable the production of a packaging container having extremely excellent hygiene.
Another problem to be solved by the present invention is to provide a laminate provided with the vapor-deposited resin film.
Another problem to be solved by the present invention is to provide a packaging container provided with the laminate.

The vapor-film resin film of the present invention comprises a polyester film and a thin-film film.
Polyester film contains chemically recycled polyester
The area ratio of the region having a molecular weight of 1,000 or less in the molecular weight distribution curve obtained from the GPC measurement of the polyester film is 1.8% or less of the total peak area.

In the vapor-filmed resin film of the present invention, the polyester film may contain chemically recycled polyester as a main constituent component.

In the vapor-filmed resin film of the present invention, the melting point of the polyester film may be 250 ° C. or lower.

In the vapor-filmed resin film of the present invention, the crystallization temperature of the polyester film may be 196 ° C. or lower.

In the vapor-filmed resin film of the present invention, the coefficient of static friction of the non-formed surface of the vapor-filmed film of the polyester film may be 0.35 or more.

In the vapor-filmed resin film of the present invention, the polyester content in the polyester film may be 90% by mass or more and 100% by mass or less.

In the vapor-filmed resin film of the present invention, the chemically recycled polyester contained in the polyester film may be chemically recycled polyethylene terephthalate.

The laminated body of the present invention comprises the above-mentioned vapor-filmed resin film and
It is characterized by including a sealant layer or an adhesive layer provided inside the vapor-filmed resin film.

In the laminated body of the present invention, the laminated body includes a base material layer, a vapor-deposited film, an intermediate layer, and a sealant layer or an adhesive layer.
The base material layer and the vapor-filmed film may be made of the thin-film resin film.

In the laminated body of the present invention, the laminated body includes a base material layer, a vapor-deposited film, an intermediate layer, and a sealant layer or an adhesive layer.
The middle layer has a support layer,
The support layer and the thin-film deposition film may be made of the thin-film deposition resin film.

The packaging container of the present invention is characterized by comprising the above-mentioned laminate.

According to the present invention, it is possible to provide a vapor-deposited resin film that can reduce the environmental load and enable the production of a packaging container having extremely excellent hygiene.
According to the present invention, it is possible to provide a laminate provided with the vapor-deposited resin film.
According to the present invention, it is possible to provide a packaging container provided with the laminate.

It is a schematic cross-sectional view which shows one Embodiment of the vapor-deposited resin film 10 of this invention. It is a schematic sectional drawing which shows one Embodiment of the laminated body 20 of this invention. It is a schematic sectional drawing which shows one Embodiment of the laminated body 20 of this invention. It is a schematic sectional drawing which shows one Embodiment of the laminated body 20 of this invention. It is a perspective view which shows one Embodiment of the standing pouch 30 manufactured by using the laminated body 20 of this invention. It is a front view which shows one Embodiment of the pillow bag 40 manufactured using the laminated body 20 of this invention. It is a front view which shows one Embodiment of the three-way seal type bag 50 manufactured using the laminated body 20 of this invention. It is a front view which shows one Embodiment of the four-sided seal type bag 60 manufactured using the laminated body 20 of this invention. It is a schematic sectional drawing which shows one Embodiment of the lid material 70 manufactured by using the laminated body 20 of this invention. It is a partial cross-sectional view which shows one Embodiment of the laminated tube 80 manufactured by using the laminated body 20 of this invention. It is a perspective view which shows one Embodiment of the paper container 90 manufactured using the laminated body 20 of this invention. It is a perspective view which shows one Embodiment of the paper cup 100 manufactured using the laminated body 20 of this invention. It is a schematic diagram for demonstrating the manufacturing method of the paper cup 100 shown in FIG. It is a figure which shows the molecular weight distribution curve in the region of the molecular weight 1,000 or less obtained in an Example.

An embodiment of the present invention will be described with reference to FIGS. 1 to 14. In the drawings attached to the present specification, the scale, aspect ratio, etc. are appropriately changed from those of the actual product and exaggerated for the convenience of illustration and comprehension.

In addition, the terms such as "parallel", "orthogonal", and "identical" and the values of length and angle, etc., which specify the shape and geometric conditions and their degrees as used in the present specification, are strictly referred to. Without being bound by the meaning, we will interpret it including the range where similar functions can be expected.

Further, in the present specification, the "inside" means the content side when the packaging container is manufactured, and the "outside" means the side opposite to the inside.

(Evaporated resin film 10)
As shown in FIG. 1, the thin-film resin film 10 of the present invention includes a polyester film 11 and a thin-film film 12.
In one embodiment, the vapor-deposited resin film 10 includes a polyester film 11, a vapor-deposited film 12, and a gas-barrier coating film in this order, and the gas-barrier coating film may be adjacent to the vapor-deposited film 12 (not shown). ).

(Polyester film 11)
The polyester film 11 contains a chemically recycled polyester. As a result, the environmental load reduction property of the vapor-filmed resin film 10 and the laminate 20 provided with the thin-film resin film 10 can be improved, and the gas barrier property can be made equivalent to that of the conventional fossil fuel polyester film. .. The polyester film 11 is preferably a single layer.
In one embodiment, the polyester film 11 preferably contains chemically recycled polyester as a main constituent component.

As used herein, the term "polyester" is obtained by a polycondensation reaction between a diol compound and a dicarboxylic acid compound.
Examples of the dicarboxylic acid compound include malonic acid, succinic acid, glutaric acid, adipic acid, suberic acid, sebacic acid, dodecandionic acid, eicosandionic acid, pimelliic acid, azelaic acid, methylmalonic acid and ethylmalonic acid, and adamantan. Dicarboxylic acid, norbornenedicarboxylic acid, cyclohexanedicarboxylic acid, decalindicarboxylic acid, terephthalic acid, isophthalic acid, phthalic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 1, 8-naphthalenedicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 4,4'-diphenyletherdicarboxylic acid, 5-sodium sulfoisophthalic acid, phenylendandicarboxylic acid, anthracendicarboxylic acid, phenanthrangecarboxylic acid, 9,9'-bis Examples thereof include (4-carboxyphenyl) fluorenic acid and ester derivatives thereof.
Examples of the diol compound include ethylene glycol, 1,2-propanediol, 1,3-propanediol, butanediol, 2-methyl-1,3-propanediol, hexanediol, neopentylglycol, cyclohexanedimethanol, and cyclohexane. Diethanol, decahydronaphthalenedimethanol, decahydronaphthalenediethanol, norbornandimethanol, norbornandiethanol, tricyclodecanedimethanol, tricyclodecaneethanol, tetracyclododecanedimethanol, tetracyclododecanediethanol, decalindiethanol, decalindiethanol, 5 -Methylol-5-ethyl-2- (1,1-dimethyl-2-hydroxyethyl) -1,3-dioxane, cyclohexanediol, bicyclohexyl-4,4'-diol, 2,2-bis (4-hydroxy) Cyclohexylpropane), 2,2-bis (4- (2-hydroxyethoxy) cyclohexyl) propane, cyclopentanediol, 3-methyl-1,2-cyclopentadiol, 4-cyclopentene-1,3-diol, adamandiol , Paraxylene glycol, bisphenol A, bisphenol S, styrene glycol, trimethylolpropane, pentaerythritol and the like.
Further, the polyester may contain a monomer other than the dicarboxylic acid compound and the diol compound as long as the characteristics of the present invention are not impaired.

Further, in the present specification, the “chemically recycled polyester” is a container for used polyester (for example, at least one polyester selected from the group consisting of fossil fuel polyester, biomass polyester, chemically recycled polyester and mechanically recycled polyester). Etc. are collected, pulverized, washed, separated from foreign substances, etc., and then flakes or pellets are formed. It is made by polymerizing polyester again using BHET as a raw material. The disassembly method and the like are not limited to this.
Further, the "fossil fuel polyester" has a diol derived from fossil fuel as a diol unit and a dicarboxylic acid derived from fossil fuel as a dicarboxylic acid unit.
The "biomass polyester" contains ethylene glycol derived from biomass as a diol unit and contains a dicarboxylic acid derived from fossil fuel as a dicarboxylic acid unit, or contains ethylene glycol derived from biomass and a diol derived from fossil fuel as a diol unit. It contains a fossil fuel-derived dicarboxylic acid as a dicarboxylic acid unit.
Since carbon dioxide in the atmosphere contains C14 at a fixed ratio (105.5 pMC), the content of C14 in plants that grow by taking in carbon dioxide in the atmosphere, for example, corn, is also about 105.5 pMC. It is known. It is also known that fossil fuels contain almost no C14. Therefore, the ratio of carbon derived from biomass can be calculated by measuring the ratio of C14 contained in all carbon atoms in polyester. Taking polyethylene terephthalate as an example, polyethylene terephthalate is obtained by polymerizing ethylene glycol containing 2 carbon atoms and terephthalic acid containing 8 carbon atoms at a molar ratio of 1: 1 and therefore only those derived from biomass as ethylene glycol. When is used, the weight ratio of the biomass-derived component in the polyester is 31.25%, so that the theoretical value of the degree of biomass is 31.25%.

Further, "the polyester film 11 contains a chemically recycled polyester as a main constituent component" means that the polyester film 11 contains 50% by mass or more of the chemically recycled polyester with respect to 100% by mass of the solid content.
The content of the chemically recycled polyester in the polyester film 11 is preferably 60% by mass or more and 100% by mass or less, and more preferably 70% by mass or more and 100% by mass or less.
The polyester film 11 preferably contains 90% by mass or more and 100% by mass or less of polyester, and more preferably 95% by mass or more and 100% by mass or less.

Among the chemically recycled polyesters contained in the polyester film 11, the chemically recycled polyethylene terephthalate is particularly preferable from the viewpoint of transparency and easy recovery of the used polyethylene terephthalate container as a raw material.
Further, the polyester film 11 may contain two or more kinds of chemically recycled polyesters.

The polyester film 11 may contain a resin material other than the chemically recycled polyester (hereinafter referred to as other resin materials) as long as the characteristics of the present invention are not impaired. For example, fossil fuel polyester, biomass polyester, and mechanical recycled polyester may be contained. , (Meta) acrylic resin, polyolefin, vinyl resin, cellulose resin, ionomer resin and the like.
"Mechanical recycled polyester" means that used polyester (for example, at least one polyester selected from the group consisting of fossil fuel polyester, biomass polyester, chemical recycled polyester and mechanical recycled polyester) containers and the like are collected and crushed. It is recycled into flakes or pellets after cleaning, separating foreign substances, and the like.

In the polyester film 11, the content of the resin material other than polyester is preferably 10% by mass or less, preferably 5% by mass or less, preferably 1% by mass or less, and is not contained. Especially preferable.

Further, the polyester film 11 can contain additives as long as the characteristics of the present invention are not impaired. Additives include, for example, oxygen absorbers, plasticizers, UV stabilizers, antioxidants, anticolorants, matting agents, deodorants, flame retardants, weathering agents, antistatic agents, friction reducing agents, slips. Examples thereof include agents, mold release agents, antioxidants, ion exchangers, antiblocking agents and colorants.

The area ratio of the region having a molecular weight of 1,000 or less in the molecular weight distribution curve obtained from the GPC (Gel Permeation Chromatography) measurement of the polyester film 11 is 1.8% or less of the total peak area. And. Since the content of the component having a molecular weight of 1,000 or less (hereinafter, also referred to as a low molecular weight component) is reduced in such a polyester film 11, the content to be filled in the packaging container may be mixed with the low molecular weight component. It can be suppressed and the hygiene of the packaging container manufactured by using the vapor-deposited resin film of the present invention can be improved.
Further, the area ratio of the region having a molecular weight of 1,000 or less is more preferably 1.5% or less of the total peak area, and further preferably 1.35% or less.
From the viewpoint of hygiene, the area ratio of the region having a molecular weight of 1,000 or less is preferably smaller than the total peak area, but the area ratio of the region having a molecular weight of 1,000 or less is, for example, 0 of the total peak area. It may be 0.01% or more.

The GPC measurement of the polyester film 11 is performed in accordance with JIS K 7252-1: 2008.
Specifically, 10 g of the polyester film 11 is cut out and weighed in a 30 mL vial. HFIP / chloroform mixed solution is added to this vial and allowed to stand for 12 hours to dissolve.
After standing, chloroform is added, diluted to prepare a 0.1% solution.
This solution is filtered using a 0.45 μm hydrophilic PTFE membrane filter cartridge (Millex-LH manufactured by Merck Millipore), and GPC measurement is performed on the obtained filtrate under the following conditions.
(Measurement condition)
-Column used: Two PLgel 5μ MIXED (7.5mm x 300mm) manufactured by Agilent Technologies.
-Column temperature: 40 ° C
-Mobile phase: Chloroform (manufactured by Fuji Film Wako Pure Chemical Industries, Ltd., for liquid chromatography)
・ Flow rate: 1.0 mL / min
・ Injection amount: 2.5 μL
-Detection: 254 nm (ultraviolet-visible detector)
-Molecular weight calibration: monodisperse polystyrene (manufactured by Agilent Technologies, PS-1)
-Equipment: 515 HPLC pump, 717plus automatic injection device, ultraviolet-visible light detector (manufactured by Waters)

The melting point of the polyester film 11 is preferably 250 ° C. or lower, more preferably 248.5 ° C. or lower. As a result, the film formation of the polyester film 11 can be speeded up, that is, the film formation property can be improved.

The melting point of the polyester film 11 is preferably 230 ° C. or higher, more preferably 240 ° C. or higher. Thereby, the heat resistance of the polyester film 11 can be improved.

The crystallization temperature of the polyester film 11 is preferably 196 ° C. or lower, more preferably 195 ° C. or lower. Thereby, the stretch stability of the polyester film 11 can be improved, that is, the film forming property can be improved.
The crystallization temperature of the polyester film 11 is preferably 185 ° C. or higher, more preferably 190 ° C. or higher. Thereby, the heat resistance of the polyester film 11 can be improved.

In the present specification, the "melting point" and the "crystallization temperature" are measured by differential scanning calorimetry (DSC) in accordance with JIS K 7121: 2012 as follows.
First, (1) the temperature of the polyester film sample (5 mg) is raised from 20 ° C. to 300 ° C. at a rate of 10 ° C./min. (2) Then, hold at 300 ° C. for 5 minutes. (3) Next, the temperature is lowered from 300 ° C. to 20 ° C. at a rate of −10 ° C./min. (4) Then, hold at 20 ° C. for 5 minutes. (5) The temperature is raised again from 20 ° C. to 300 ° C. at a rate of 10 ° C./min. This gives a melting curve.
The main peak in the temperature lowering stage of this melting curve was defined as the crystallization temperature, and the main peak in the second temperature rising stage was defined as the melting point.

The coefficient of static friction of the non-formed surface of the vapor-filmed film 11 of the polyester film 11 is preferably 0.35 or more, and more preferably 0.40 or more. As a result, excessive slippage of the surface of the packaging container manufactured by using the vapor-filmed resin film of the present invention can be suppressed, and loading stability during stacking can be improved.
The coefficient of static friction of the non-formed surface of the vapor-filmed film 11 of the polyester film 11 is preferably 0.60 or less, and more preferably 0.50 or less. As a result, the running performance in the packaging machine is stable, and the high-speed filling and packaging performance is improved.
The measurement of the coefficient of static friction of the polyester film 11 can be performed as follows in accordance with JIS K 7125: 1999.

First, the vapor-filmed resin film 10 is cut to prepare a test piece having a size of 200 mm × 150 mm. Next, this test piece is attached and fixed to the sliding table of the testing machine with cellophane tape so that the polyester film 11 faces upward.
Next, the vapor-filmed resin film 10 is cut into a size of 70 mm × 100 mm to prepare a test piece.
Next, the test piece is wound around a 63 mm × 63 mm × 6.3 mm metal thread (weight 200 g) so that the vapor-deposited film is on the inside and the polyester film 11 is on the outside.
Next, the polyester films 11 are placed on the fixed vapor-film resin film 10 so as to be in contact with each other.
Next, in an environment of 23 ° C. and a relative humidity of 50%, the metal thread around which the test piece is wound is slid at a speed of 100 mm / min and measured using a friction measuring instrument.

In the vapor-deposited resin film 10 according to the present invention, the content of the cyclic trimer in the polyester film 11 is preferably 0.510% by mass or more and 1.030% by mass or less, and more preferably 0.600% by mass or more and 1.010. It is 0% by mass or less, more preferably 0.650% by mass or more and 1.000% by mass or less. By setting the content of the cyclic trimer in the above range, the polyester film 11 having the above-mentioned melting point and crystallization temperature and the above-mentioned vapor-deposited resin film having the static friction coefficient can be suitably produced.

The content of the cyclic trimer in the polyester film 11 can be measured by the following method.
A sample of about 0.1 g is taken from the polyester film 11 and this sample is dissolved in a mixed solution of hexafluoroisopropanol (HFIP) and chloroform. Acetonitrile is added to this solution to precipitate the polymer, and then the precipitate is filtered. The filtrate is evaporated to dryness and the resulting residue is dissolved in dimethylformamide (DMF). This solution is analyzed by high performance liquid chromatography (HPLC) to measure the content of cyclic trimers. The measurement conditions are as follows.
(Measurement condition)
・ Equipment: LC-20 manufactured by Shimadzu Corporation
-Column used: Develosil ODS-HG-3 3μ (4.6 x 150 mm) manufactured by Nomura Chemical Co., Ltd.
-Column temperature: 40 ° C
-Mobile phase: 0.5% by volume acetic acid aqueous solution / acetonitrile / acetonitrile (gradient)
・ Flow rate: 1.0 mL / min
・ Injection amount: 15 μL
-Detection: 254 nm (ultraviolet-visible detector)
・ Equipment: LC-20 manufactured by Shimadzu Corporation

The polyester film 11 may be a stretched film or an unstretched film. The polyester film 11 is preferably a stretched film from the viewpoint of heat resistance, strength and transparency. The stretched film may be a uniaxially stretched film or a biaxially stretched film. The stretched film is preferably a biaxially stretched film from the viewpoint of dimensional stability.

The polyester film 11 may be surface-treated. Thereby, the adhesion with the adjacent layer can be improved. The surface treatment method is not particularly limited, and examples thereof include corona treatment, ozone treatment, and frame treatment.

The thickness of the polyester film 11 is preferably 3 μm or more and 25 μm or less, more preferably 6 μm or more and 25 μm or less, further preferably 7 μm or more and 16 μm or less, and further preferably 9 μm or more and 16 μm or less. preferable. Thereby, the aptitude for forming the vapor-filmed film, the heat resistance and the strength of the polyester film 11 can be improved.

(Manufacturing method of polyester film 11)
For the polyester film 11 in which the area ratio of the region having a molecular weight of 1,000 or less in the molecular weight distribution curve obtained from the measurement of GPC is 1.8% or less of the total peak area, the types of monomers and oligomers as raw materials are appropriately selected. It can be produced by appropriately adjusting the content of the monomer and the oligomer which are the raw materials. Further, since the low molecular weight component has a role as a wax, the friction of the polyester film 11 can be adjusted by adjusting the content of the low molecular weight component.
In one embodiment, the crystallization temperature and melting point of the polyester film 11 can be adjusted by using, for example, a compound containing isophthalic acid or the like as the dicarboxylic acid compound.
The film forming method is not particularly limited, and the film can be produced by using a conventionally known method, for example, the T-die method.

(Embedded film 12)
The thin-film resin film 10 of the present invention includes the thin-film film 12 on at least one surface of the polyester film 11.
The vapor-deposited film 12 may be provided inside or outside the polyester film 11.
When the thin-film resin film 10 of the present invention is provided with the thin-film film 12, the gas barrier property, specifically, the oxygen barrier property and the water vapor barrier property can be improved.

The vapor deposition film 12 is, for example, silicon (Si), aluminum (Al), magnesium (Mg), calcium (Ca), potassium (K), tin (Sn), sodium (Na), boron (B), titanium (Ti). ), Lead (Pb), zirconium (Zr), yttrium (Y) and the like, or a vapor-deposited film of one or more kinds of inorganic substances or inorganic oxides. Further, the thin-film deposition film 12 may be composed of two or more layers, and may be composed of the same material or different materials.

The film thickness of the thin-film film 12 is preferably 10 nm or more and 200 nm or less, and more preferably 20 nm or more and 100 nm or less.

The method for forming the vapor deposition film 12 is not particularly limited, and is, for example, a physical vapor deposition method (PVD method) such as a vacuum vapor deposition method, a sputtering method, and an ion plating method, or a plasma chemical vapor deposition method. Examples thereof include a chemical vapor deposition method (CVD method, CVD method) such as a growth method, a thermochemical vapor deposition method, and a photochemical vapor deposition method.

(Gas barrier coating film)
The thin-film resin film 10 of the present invention may be provided with a gas barrier coating film so as to be adjacent to one surface of the thin-film film 12. The gas barrier coating film functions as a layer that suppresses the permeation of oxygen gas, water vapor, and the like. In particular, when the thin-film vapor film 12 is a transparent thin-film film made of a metal oxide such as silicon oxide, the effect is remarkably exhibited.

The gas barrier coating film has a general formula of R ¹ _n M (OR ² ) _m (wherein, in the formula, R ¹ and R ² represent organic groups having 1 to 8 carbon atoms, M represents a metal atom, and n. Represents an integer of 0 or more, m represents an integer of 1 or more, and n + m represents the valence of M.) At least one or more alkoxides and a polyvinyl alcohol system as described above. It is obtained by a gas barrier composition containing a resin and / or an ethylene / vinyl alcohol copolymer and further being polycondensed by a solgel method in the presence of a solgel method catalyst, acid, water and an organic solvent.

As the alkoxide represented by the above general formula R ¹ _n M (OR ² ) _m , at least one or more of a partial hydrolyzate of the alkoxide and a condensate of the hydrolysis of the alkoxide can be used. Further, as the partial hydrolyzate of the above alkoxide, it is not necessary that all of the alkoxy groups are hydrolyzed, and one or more of them may be hydrolyzed, or a mixture thereof. As the condensate of hydrolysis of alkoxide, one having a dimer or more of a partially hydrolyzed alkoxide, specifically, one having a dimer of 2 to 6 is used.

In the above-mentioned alkoxide represented by the general formula R ¹ _n M (OR ² ) _m , silicon, zirconium, titanium, aluminum, or the like can be used as the metal atom represented by M. In the present embodiment, examples of the preferred metal include silicon and titanium. Further, in the present invention, the alkoxide may be used alone or by mixing alkoxides of two or more different metal atoms in the same solution.

Further, in the alkoxide represented by the above general formula R ¹ _n M (OR ² ) _m , specific examples of the organic group represented by R ¹ include, for example, a methyl group, an ethyl group, an n-propyl group, and i. Alkyl groups such as -propyl group, n-butyl group, i-butyl group, sec-butyl group, t-butyl group, n-hexyl group, n-octyl group and others can be mentioned. Further, in the alkoxide represented by the above general formula R ¹ _n M (OR ² ) _m , specific examples of the organic group represented by R ² include, for example, a methyl group, an ethyl group, an n-propyl group, and i. -Propyl group, n-butyl group, sec-butyl group, etc. can be mentioned. In addition, these alkyl groups may be the same or different in the same molecule.

When preparing the above gas barrier composition, for example, a silane coupling agent or the like may be added. As the above-mentioned silane coupling agent, known organic reactive group-containing organoalkoxysilanes can be used. In this embodiment, an organoalkoxysilane having an epoxy group is particularly preferably used, and specifically, for example, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, or , Β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane and the like can be used. The above-mentioned silane coupling agent may be used alone or in combination of two or more.

(Laminated body 20)
As shown in FIG. 2, the laminated body 20 of the present invention includes the vapor-filmed resin film 10 and the sealant layer 21 inside the vapor-filmed resin film 10. The sealant layer 21 may form the innermost layer of the laminated body 20. The thin-film resin film 10 may form the outermost layer of the laminated body 20. In the laminated body 20, the polyester film 11 may form the outermost layer (FIG. 2), or the vapor-deposited film 12 may form the outermost layer (not shown). When the vapor-filmed resin film 10 includes a gas barrier coating film, the gas barrier coating film may form the outermost layer of the laminate 20 (not shown).
In one embodiment, as shown in FIG. 3, the laminate 20 of the present invention is provided with a first sealant layer 22 inside the vapor-deposited resin film 10 and a second sealant layer 22 outside the vapor-deposited resin film 10. The sealant layer 23 may be provided. The first sealant layer 22 may form the innermost layer or the outermost layer of the laminated body 20. The second sealant layer 23 may form the innermost layer or the outermost layer of the laminated body 20.
In one embodiment, the laminate 20 of the present invention includes a base material layer 24, a vapor deposition film 12, an intermediate layer 25, and a sealant layer 21, as shown in FIG. In the laminated body 20, the sealant layer 21 may form the innermost layer, and the base material layer may form the outermost layer. The laminate 20 may be provided with an adhesive layer between the vapor-deposited film 12 and the intermediate layer 25.
In one embodiment, the intermediate layer 25 may include a support, a gas barrier layer or a metal leaf (not shown).
In one embodiment, the laminate 20 of the present invention may include a printing layer on any layer such as a polyester film 11, a vapor-deposited film 12, a base material layer 24, and a support layer (not shown). ..
The laminate 20 of the present invention may be provided with one or more adhesive layers such as an adhesive layer, an adhesive resin layer, and an anchor coat layer between arbitrary layers (not shown).
The laminated body 20 of the present invention may be provided with an arbitrary layer between the vapor-filmed resin film 10 and the sealant layer 21 and outside the vapor-filmed resin film 10 (not shown).
In addition, in the laminated body of the present invention and the packaging container provided with the laminated body of the present invention, the printed layer, the vapor-deposited film, the gas barrier coating film, the adhesive layer, the adhesive resin layer and the anchor coat layer are not included in the number of layers. May be good. That is, FIG. 2 may be a schematic cross-sectional view showing the two-layered laminated body 20, and FIGS. 3 and 4 may be a schematic cross-sectional view showing the three-layered laminated body 20.
Hereinafter, each layer included in the laminate of the present invention will be described, but since the vapor-filmed resin film 10 has been described above, the description thereof will be omitted here.

(Sealant layer 21)
The sealant layer 21 contains a resin material that exhibits fusion property by heat. Examples of the resin material that exhibits fusion property by heat include low-density polyethylene (LDPE: density 0.910 to 0.925), medium-density polyethylene (MDPE: 0.926 to 0.940), and high-density polyethylene (LDPE: 0.926 to 0.940). HDPE: density 0.941 ~), linear low density polyethylene (LLDPE: density 0.910 ~ 0.925), ethylene-α olefin copolymer, polypropylene (homopolymer, block polymer, random polymer), ethylene- Vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl methacrylate copolymer Combined (EMMA), ionomer resin, heat-sealing ethylene / vinyl alcohol resin, or copolymerized resin, methylpentene-based resin, ethylene-propylene copolymer, methylpentene polymer, polybutene polymer, polyethylene, polypropylene, cyclic olefin copolymer, etc. Polymer-based resins, acid-modified polyolefin resins obtained by modifying polyolefin-based resins with unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, and itaconic acid, vinyl resins, and (meth) acrylic resins. And so on. The sealant layer 21 may contain two or more of the above resin materials.
Examples of the sealant layer 21 include a heat seal layer and a hot melt layer using a hot melt adhesive containing the above resin material.

When polyethylene is used for the sealant layer 21, biomass polyethylene may be used as the polyethylene. Thereby, the environmental load in the production of the laminated body 20 of the present invention can be further reduced.
Here, the biomass polyethylene is manufactured from biomass ethanol as a raw material. The method for producing biomass polyethylene is not particularly limited, and can be obtained by a conventionally known method. Biomass polyethylene can be produced using biomass ethanol as a raw material, but it is particularly preferable to use fermented ethanol derived from biomass obtained from a plant material. The plant material is not particularly limited, and conventionally known plants can be used. For example, corn, sugar cane, beets, and manioc can be mentioned.

The sealant layer 21 can contain additives as long as the characteristics of the present invention are not impaired. Additives include, for example, oxygen absorbers, plasticizers, UV stabilizers, antioxidants, anticolorants, matting agents, deodorants, flame retardants, weathering agents, antistatic agents, friction reducing agents, slips. Examples thereof include agents, mold release agents, antioxidants, ion exchangers, antiblocking agents and colorants.

The thickness of the sealant layer 21 is preferably appropriately adjusted according to the use of the laminated body 20, and can be, for example, 7 μm or more and 50 μm or less.
Further, the sealant layer 21 may be a single layer or a multilayer layer.

Even if the laminate 20 of the present invention is provided with the sealant layer 21 on the inner surface of the thin-film resin film 10, the sealant layer (first sealant layer 22 and second sealant layer 23) is provided on both the inner surface and the outer surface of the vapor-film resin film 10. ) May be provided.
By providing the sealant layers 21 on both sides of the vapor-filmed resin film, it is possible to manufacture packaging containers such as laminated tubes, labels and paper containers.
The composition and thickness of the first sealant layer 22 and the second sealant layer 23 may be the same or different.

The sealant layer 21 can be formed by melt-extruding the resin material on the vapor-filmed resin film 10 and then cooling it. An anchor coat layer may be formed on the vapor-filmed resin film 10 and the resin material may be melt-extruded onto the anchor coat layer.
The sealant layer 21 can be laminated with a film made of the above resin material on the vapor-filmed resin film 10 via an adhesive layer by using a dry lamination method.
The sealant layer 21 can be laminated with a film made of the above resin material on the vapor-deposited resin film 10 via an adhesive resin layer by using a melt extrusion lamination method.
The sealant layer 21 can be formed on the vapor-deposited resin film 10 by using a hot melt adhesive or a pressure-sensitive adhesive.

The sealant layer 21 can be formed by melt-extruding the resin material onto the base material layer 24 or the support layer and then cooling the resin material. An anchor coat layer may be formed on the base material layer 24 or the support layer, and the resin material may be melt-extruded onto the anchor coat layer.
The sealant layer 21 can be laminated with a film made of the above resin material on the base material layer 24 or the support layer via an adhesive layer or an anchor coat layer by using a dry lamination method.
The sealant layer 21 can be laminated with a film made of the above resin material on the base material layer 24 or the support layer via the adhesive resin layer by using the melt extrusion lamination method.
The sealant layer 21 can be formed on the vapor-deposited resin film 10 by using a hot melt adhesive or a pressure-sensitive adhesive.

The laminate of the present invention may include an adhesive layer instead of the sealant layer 21. The adhesive layer contains an adhesive. Examples of the pressure-sensitive adhesive contained in the pressure-sensitive adhesive layer include synthetic rubbers such as natural rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber and polyisobutylene rubber, acrylic resins, silicone-based resins, polypropylene and the like.
The adhesive layer may contain two or more of the above adhesives.

(Base material layer 24)
The base material layer 24 functions to hold each layer. The base material layer 24 is preferably one that can impart strength as a packaging container to the laminated body 20. The base material layer 24 includes polyester (chemical recycled polyester, mechanical recycled polyester, fossil fuel polyester, biomass polyester), (meth) acrylic resin, polyethylene, polypropylene, polyolefins such as polymethylpentene, vinyl resin, cellulose resin, and ionomer resin. , And a resin film containing at least one or more resin materials such as polyamide such as nylon 6, nylon 6, 6 and polymethoxylylen adipamide (MXD6) (even if it is a stretched film, it is an unstretched film. May be) etc. can be used. The resin film is preferably a stretched film. The stretched film may be a uniaxially stretched film or a biaxially stretched film. From the viewpoint of dimensional stability, a biaxially stretched film is preferable. As the base material layer 24, a laminated film of the above-mentioned material may be used.

In one embodiment, the substrate layer 24 is a resin film containing polyester.
In one embodiment, the base material layer 24 is a resin film containing polyester as a main constituent component, and the polyester content is preferably 90% by mass or more, more preferably 95% by mass or more.
The base material layer 24 preferably contains recycled polyester as the polyester. Thereby, the environmental load of the packaging container made of the laminated body 20 of the present invention can be further reduced.
The polyester film 11 described above may be used as the base material layer 24. As a result, the environmental load can be further reduced, the transfer of the small molecule polymer to the sealant layer 21 can be effectively prevented, and the hygiene of the packaging container produced by the laminate 20 of the present invention can be further improved.

The laminated body 20 of the present invention may be provided with the thin-film deposition film 12 on one surface of the base material layer 24, and may further be provided with a gas barrier coating film on the thin-film deposition film 12. The base material layer 24 and the thin-film vapor film 12 may be made of the thin-film resin film 10.

A paper base material may be used as the base material layer 24. This makes it possible to manufacture packaging containers such as paper containers and paper cups.

As the paper base material, high-quality paper, art paper, coated paper, resin-coated paper, cast-coated paper, paperboard, synthetic paper, impregnated paper and the like can be appropriately selected and used according to the intended use.

The thickness of the paper base material is preferably changed as appropriate according to the intended use, but can be, for example, 30 g / m ² or more and 400 g / m ² or less.

The base material layer 24 can contain additives as long as the characteristics of the present invention are not impaired. Additives include, for example, oxygen absorbers, plasticizers, UV stabilizers, antioxidants, anticolorants, matting agents, deodorants, flame retardants, weathering agents, antistatic agents, friction reducing agents, slips. Examples thereof include agents, mold release agents, antioxidants, ion exchangers, antiblocking agents and colorants.
The thickness of the support layer is not particularly limited, and it is preferable to appropriately change the thickness according to the use of the laminated body 20.

The laminate 20 of the present invention may be provided with a printing layer on one surface of the base material layer 24.

The base material layer 24 can be laminated via an adhesive layer.

(Print layer)
The laminate 20 of the present invention includes a printing layer on an arbitrary layer, for example, a layer such as a polyester film 11, a vapor-deposited film 12, a base material layer 24, or a support layer.

The image formed as the print layer is not particularly limited, and represents characters, patterns, symbols, combinations thereof, and the like.
Further, the printed layer may be formed on a part of the surface of any layer or may be formed on the entire surface. Further, the print layer may be formed into a plurality of layers.

The print layer can be formed by appropriately selecting and using conventionally known inks. Ink using a raw material derived from biomass may be used in consideration of the environmental load.
Commercially available inks containing raw materials derived from biomass can be used, and examples thereof include LP bio series manufactured by Toyo Ink Co., Ltd. and Finato BM series manufactured by DIC Graphics Co., Ltd.

The method for forming the print layer is not particularly limited, and examples thereof include conventionally known printing methods such as a gravure printing method, an offset printing method, and a flexographic printing method.

(Adhesive layer)
The adhesive layer is a layer provided between arbitrary layers of the laminate 20 of the present invention. The adhesive layer can be formed by applying a conventionally known adhesive (adhesive for laminating) and drying.

The laminating adhesive may be a one-component curing type or a two-component curing type. The laminate welding adhesive may be a solvent type, an aqueous type, or an emulsion type adhesive.
Examples of the adhesive for laminating include vinyl adhesives, (meth) acrylic adhesives, polyamide adhesives, polyester adhesives, polyether adhesives, polyurethane adhesives, epoxy adhesives and rubber adhesives. Examples include adhesives.

The coating method is not particularly limited, and examples thereof include a direct gravure roll coating method, a gravure roll coating method, a kiss coating method, a reverse roll coating method, a fonten method, and a transfer roll coating method.

The thickness of the adhesive layer is preferably 0.1 μm or more and 10 μm or less, and more preferably 1 μm or more and 5 μm or less.

(Adhesive resin layer)
The adhesive resin layer is a layer provided between arbitrary layers of the laminate 20 of the present invention. The adhesive resin layer is a layer formed by a melt extrusion lamination method using a thermoplastic resin. Examples of the thermoplastic resin include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, and ethylene-methacrylic acid copolymer. Graft polymerization of unsaturated carboxylic acid, unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, and ester monomer on coalescence, ethylene-methyl methacrylate copolymer, ethylene-maleic acid copolymer, ionomer resin, and polyolefin resin. Alternatively, a copolymerized resin, a resin obtained by graft-modifying maleic anhydride to a polyolefin resin, and the like can be mentioned. The adhesive resin layer may contain two or more types of thermoplastic resin.

In one embodiment, the thickness of the adhesive resin layer is preferably 0.1 μm or more and 10 μm or less, and more preferably 1 μm or more and 5 μm or less.
In one embodiment, the thickness of the adhesive resin layer is preferably 5 μm or more and 100 μm or less, and more preferably 10 μm or more and 50 μm or less.

(Anchor coat layer)
The anchor coat layer is a layer provided between arbitrary layers of the laminated body 20 of the present invention. The anchor coat layer can be formed by applying a conventionally known anchor coat agent and drying it.

Examples of the anchor coating agent include an anchor coating agent made of any resin having a heat resistant temperature of 135 ° C. or higher, for example, a vinyl-modified resin, an epoxy resin, a urethane resin, a polyester resin, or the like. As the anchor coating agent, in particular, an anchor coating agent composed of a polyacrylic or polymethacrylic resin having two or more hydroxyl groups in the structure and an isocyanate compound as a curing agent can be preferably used. As the anchor coating agent, a silane coupling agent may be added as an additive. As the anchor coating agent, nitrified cotton may be added in order to increase heat resistance.

The thickness of the anchor coat layer is preferably 0.1 μm or more and 2 μm or less, and more preferably 0.2 μm or more and 1 μm or less.

(Middle layer 25)
The laminate 20 of the present invention may include an intermediate layer 25 between the base material layer 24 and the sealant layer 21. The intermediate layer 25 is a layer including a support layer for the purpose of improving the strength of the laminated body 20, a gas barrier layer for the purpose of improving the gas barrier property of the laminated body 20, and a metal foil. The intermediate layer 25 preferably includes a support layer.

(Support layer)
The support layer is a layer provided for the purpose of improving the strength and elasticity of the laminated body 20.
Examples of the support layer include polyester (chemical recycled polyester, mechanical recycled polyester, fossil fuel polyester, biomass polyester), (meth) acrylic resin, polyethylene, polypropylene, polyolefins such as polymethylpentene, vinyl resin, cellulose resin, and ionomer. A resin film containing one or more kinds of resin and a resin material such as a polyamide such as nylon 6, nylon 6, 6 and polymethoxylylen adipamide (MXD6) (even if it is a stretched film, it is an unstretched film. May be) etc. can be used. The resin film is preferably a stretched film. The stretched film may be a uniaxially stretched film or a biaxially stretched film. From the viewpoint of dimensional stability, a biaxially stretched film is preferable. As the support layer, a laminated film of the above-mentioned material may be used.
The above-mentioned paper base material may be used as the support layer.

In one embodiment, the support layer is a resin film containing polyester.
In one embodiment, the support layer is a resin film containing polyester as a main constituent component, and the polyester content is preferably 90% by mass or more, more preferably 95% by mass or more.
The support layer preferably contains recycled polyester as the polyester. Thereby, the environmental load of the packaging container made of the laminated body 20 of the present invention can be further reduced. The polyester film 11 described above may be used as the support layer. As a result, the environmental load can be further reduced, the transfer of the small molecule polymer to the sealant layer 21 can be effectively prevented, and the hygiene of the packaging container produced by the laminate 20 of the present invention can be further improved.

The laminated body 20 of the present invention may be provided with the vapor-filmed film 12 on one surface of the support layer, and may be further provided with a gas barrier coating film on the thin-film film 12. The support layer and the thin-film vapor film 12 may be made of the thin-film resin film 10.

The support layer can contain additives as long as the characteristics of the present invention are not impaired. Additives include, for example, oxygen absorbers, plasticizers, UV stabilizers, antioxidants, anticolorants, matting agents, deodorants, flame retardants, weathering agents, antistatic agents, friction reducing agents, slips. Examples thereof include agents, mold release agents, antioxidants, ion exchangers, antiblocking agents and colorants.
The thickness of the support layer is not particularly limited, and it is preferable to appropriately change the thickness according to the use of the laminated body 20.

The laminated body 20 of the present invention may be provided with a printing layer on one surface of the support layer.

The support layer can be laminated via an adhesive layer.

(Gas barrier layer)
In one embodiment, the gas barrier layer comprises a gas barrier resin. Examples of the gas barrier resin include polyamides such as ethylene-vinyl alcohol copolymer (EVOH), polyvinyl alcohol, polyacrylonitrile, nylon 6, nylon 6,6 and polymethoxylylen adipamide (MXD6), polyesters and polyurethanes. In addition, (meth) acrylic resin and the like can be mentioned. The gas barrier layer may contain two or more kinds of gas barrier resins.
The gas barrier layer may contain a resin other than the gas barrier resin, or may contain the above-mentioned additive.
The thickness of the gas barrier layer made of the gas barrier resin is preferably 3 μm or more and 30 μm or less, and more preferably 5 μm or more and 20 μm or less. By setting the thickness of the gas barrier layer to 7 μm or more, the oxygen barrier property and the water vapor barrier property of the laminate 20 of the present invention can be further improved.
As the gas barrier layer, a film made of the above-mentioned gas barrier resin can be laminated via an adhesive layer.

(Metal leaf)
The laminate 20 of the present invention can be provided with a metal foil. Thereby, the oxygen barrier property and the water vapor barrier property can be further improved.
The metal constituting the metal foil is not particularly limited, and a metal foil made of aluminum, magnesium, or the like can be used.
The thickness of the metal foil is preferably 3 μm or more and 100 μm or less, and more preferably 6 μm or more and 25 μm or less. By setting the thickness of the metal foil to 3 μm or more, the oxygen barrier property and the water vapor barrier property of the laminate 20 of the present invention can be further improved.
The metal leaf can be laminated via an adhesive layer.

(Example of layer structure)
An example of the layer structure of the laminated body is shown below. In the following example, the left side means the outside and the right side means the inside. In the following example, the "/" symbol means the boundary of each layer. In the following example, "base" means a substrate layer, "contact" means an adhesive resin layer, "Ad" means an adhesive layer, "AC" means an anchor coat layer, and """Steam" means a vapor-deposited film, "hi" means a heat-seal layer, "sticky" means an adhesive layer, "e" means a hot melt layer, and "coating" means a gas barrier coating film. Meaning, "support" means the support layer, and "mark" means the printing layer. In the following example, "CR-PEs" means polyester film 11, "PET" means polyethylene terephthalate, "ONY" means stretched nylon, "OPP" means stretched polypropylene, and "CPP". "" Means unstretched polypropylene, "PE" means polyethylene, "PEF" means polyethylene film, "Al" means aluminum, "MO" means metal oxide, and "MOR". "" Means metal alkoxide.

For example, the two-layer structure of the laminated body has the following structure.
(1) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Hi (PEF)
(2) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Hi (PE)
(3) Group (CR-PEs) / Steam (MO) / Coating (MOR) / AC / Hi (PE)
(4) Group (CR-PEs) / Steam (MO) / Coating (MOR) / AC / Contact (PE) / Hi (PEF)
(5) Group (CR-PEs) / Steam (Al) / Viscous (adhesive)
(6) Group (CR-PEs) / Steam (Al) / AC / Hi (PE)
(7) Group (CR-PEs) / Steam (MO / Coating (MOR) / Mark / Ad / Hi (PEF))
(8) Group (CR-PEs) / Steam (MO / Coating (MOR) / Mark / Hi (PE))
(9) Group (CR-PEs) / Steam (MO / Coating (MOR) / Mark / AC / Hi (PE))
(10) Group (CR-PEs) / Steam (MO / Coating (MOR) / Mark / AC / Contact (PE) / Hi (PEF)
(11) Mark / Group (CR-PEs) / Steam (Al) / Sticky (adhesive)
(12) Mark / Group (CR-PEs) / Steam (Al) / Hi (PE)
(13) Mark / Group (CR-PEs) / Steam (Al) / AC / Hi (PE)

Examples of the laminated body having a three-layer structure or more include the following structures. In the following configuration, the base material layer is the polyester film 11.
(1) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Support (ONY) / Ad / Hi (PEF)
(2) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Coating (MOR) / Steam (MO) / Support (PET) / Ad / Hi (CPP)
(3) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Steam (Al) / Support (PET) / Ad / Hi (CPP)
(4) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Support (ONY) / Ad / Hi (CPP)
(5) Hi (PEF) / Ad / Coating (MOR) / Steam (MO) / Group (CR-PEs) / Ad / Hi (PEF)
(6) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Support (PET) / Ad / Hi (PEF) / E (hot melt adhesive)
(7) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Support (ONY) / Hi (PE)
(8) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Support (ONY) / AC / Hi (PE)
(9) Hi (PEF) / Ad / Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Hi (PEF)
(10) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Support (ONY) / Ad / Hi (PEF)
(11) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (PET) / Ad / Hi (CPP)
(12) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Steam (Al) / Support (PET) / Ad / Hi (CPP)
(13) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Support (ONY) / Ad / Hi (CPP)
(14) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Support (PET) / Ad / Hi (PEF) / E (Hot melt adhesive)
(15) Hi (PEF) / Ad / Coating (MOR) / Steam (MO) / Group (CR-PEs) / Mark / Ad / Hi (PEF)
(16) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Support (ONY) / Hi (PE)
(17) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Support (ONY) / AC / Hi (PE)
(18) Hi (PEF) / Ad / Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Hi (PEF)

Examples of the laminated body having a three-layer structure or more include the following structures. In the following configuration, the support layer of the intermediate layer is the polyester film 11.
(1) Group (PET) / Ad / Steam (Al) / Support (CR-PEs) / Ad / Hi (PEF)
(2) Group (ONY) / AC / Contact (PE) / Steam (Al) / Support (CR-PEs) / AC / Contact (PE) / Hi (PEF)
(3) Base (paper) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (CPP)
(4) Group (OPP) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (CPP)
(5) Group (PET) / Steam (MO) / Coating (MOR) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(6) Group (ONY) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (CPP)
(7) Group (PET) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF) / E (hot melt adhesive)
(8) Group (OPP) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(9) Group (PET) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (CPP)
(10) Base (paper) / Contact (PE) / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Hi (PE)
(11) Base (paper) / contact (PE) / coating (MOR) / steaming (MO) / support (CR-PEs) / AC / hi (PE)
(12) Group (OPP) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (OPP)
(13) Group (PET) / Ad / Steam (Al) / Support (CR-PEs) / Hi (PE)
(14) Group (PET) / Ad / Steam (Al) / Support (CR-PEs) / AC / Hi (PE)
(15) Group (PET) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Hi (PE)
(16) Group (PET) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / AC / Hi (PE)
(17) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Hi (PEF)
(18) Hi (PEF) / Ad / Group (PET) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(19) Hi (PEF) / Ad / Group (PET) / Ad / Steam (Al) / Support (CR-PEs) / Ad / Hi (PEF)
(20) Hi (PEF) / Ad / Group (PET) / Ad / Support (PEF) / Ad / Support (CR-PEs) / Steam (Al) / Ad / Hi (PEF)
(21) Hi (PEF) / Ad / Group (PET) / Ad / Support (PEF) / Ad / Support (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Hi (PEF)
(22) Hi (PEF) / Ad / Group (PET) / Ad / Support (PEF) / Ad / Steam (Al) / Support (CR-PEs) / Ad / Hi (PEF)
(23) Hi (PEF) / Ad / Group (PET) / Ad / Support (PEF) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(24) Hi (PE) / Base (Paper) / Contact (PE) / Steam (Al) / Support (CR-PEs) / Hi (PE)
(25) Hi (PE) / Base (Paper) / Contact (PE) / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Hi (PE)
(26) Hi (PE) / base (paper) / contact (PE) / steam (Al) / support (CR-PEs) / AC / hi (PE)
(27) Hi (PE) / Base (Paper) / Contact (PE) / Coating (MOR) / Steam (MO) / Support (CR-PEs) / AC / Hi (PE)
(28) Group (PET) / Mark / Ad / Steam (Al) / Group (CR-PEs) / Ad / Hi (PEF)
(29) Group (ONY) / Mark / AC / Contact (PE) / Steam (Al) / Support (CR-PEs) / AC / Contact (PE) / Hi (PEF)
(30) Mark / base (paper) / Ad / coating (MOR) / steaming (MO) / support (CR-PEs) / Ad / hi (CPP)
(31) Group (OPP) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (CPP)
(32) Group (PET) / Steam (MO) / Coating (MOR) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(33) Group (ONY) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (CPP)
(34) Group (PET) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PE) / E (Hot melt adhesive)
(35) Group (OPP) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(36) Group (PET) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (CPP)
(37) Mark / Base (Paper) / Contact (PE) / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Hi (PE)
(38) Mark / Base (paper) / Contact (PE) / Coating (MOR) / Steam (MO) / Support (CR-PEs) / AC / Hi (PE)
(39) Group (OPP) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (OPP)
(40) Group (PET) / Mark / Ad / Steam (Al) / Support (CR-PEs) / Hi (PE)
(41) Group (PET) / Mark / Ad / Steam (Al) / Support (CR-PEs) / AC / Hi (PE) (42) Group (PET) / Mark / Ad / Coating (MOR) / Steam (MO) ) / Support (CR-PEs) / Hi (PE)
(43) Group (PET) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / AC / Hi (PE)
(44) Group (CR-PEs) / Steam (MO) / Coating (MOR) / Mark / Ad / Hi (PEF)
(45) Hi (PEF) / Ad / Group (PET) / Mark / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(46) Hi (PEF) / Ad / Group (PET) / Mark / Ad / Steam (Al) / Support (CR-PEs) / Ad / Hi (PEF)
(47) Hi (PEF) / Ad / Group (PET) / Mark / Ad / Support (PEF) / Ad / Support (CR-PEs) / Steam (Al) / Ad / Hi (PEF)
(48) Hi (PEF) / Ad / Group (PET) / Mark / Ad / Support (PEF) / Ad / Support (CR-PEs) / Steam (MO) / Coating (MOR) / Ad / Hi (PEF)
(49) Hi (PEF) / Ad / Group (PET) / Mark / Ad / Support (PEF) / Ad / Steam (Al) / Support (CR-PEs) / Ad / Hi (PEF)
(50) Hi (PEF) / Ad / Group (PET) / Mark / Ad / Support (PEF) / Ad / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(51) Hi (PE) / Mark / Base (Paper) / Contact (PE) / Steam (Al) / Support (CR-PEs) / Ad / Hi (PEF)
(52) Hi (PE) / Mark / Base (Paper) / Contact (PE) / Coating (MOR) / Steam (MO) / Support (CR-PEs) / Ad / Hi (PEF)
(53) Hi (PE) / Mark / Base (Paper) / Contact (PE) / Steam (Al) / Support (CR-PEs) / AC / Hi (PE)
(54) Hi (PE) / Mark / Base (Paper) / Contact (PE) / Coating (MOR) / Steam (MO) / Support (CR-PEs) / AC / Hi (PE)

In the above-mentioned laminated body having a three-layer structure or more, both the base material layer and the support layer of the intermediate layer may be the polyester film 11.

(Packaging container)
According to the laminated body 20 of the present invention, a packaging container that can reduce the environmental load and has high hygiene can be manufactured.
Examples of the packaging container include a packaging bag (pouch), a lid material, a laminated tube, a paper container, a paper cup, a label material, and the like.
The contents to be filled in the packaging container are not particularly limited, and the contents may be a liquid, a powder or a gel. Further, it may be a food or a non-food.

(Packaging bag (pouch))
Examples of the packaging bag include a standing pouch, a pillow bag (gassho-pasted seal type bag), a two-way seal type bag, a three-way seal type bag, a four-way seal type bag, a side seal type bag, an envelope-pasted seal type bag, and a foldable seal. Examples include a mold bag, a flat-bottomed sealed bag, a square-bottomed sealed bag, and a bag with a gusset.

FIG. 5 is a diagram briefly showing an example of the configuration of the standing pouch 30. As shown in FIG. 5, the standing pouch 30 includes a body portion 31 and a bottom portion 32. The hatched portion indicates a heat-sealed portion (the same applies to the following figures).
The body portion 31 included in the standing pouch 30 is composed of the laminated body 20. Further, the bottom portion 32 included in the standing pouch 30 may be made of the laminated body 20 or may be made of a different material.

In one embodiment, the laminate 20 constituting the body portion 31 included in the standing pouch 30 has a polyester film 11 (base material layer 24), a vapor deposition film 12, an adhesive layer, and a stretched resin from the outside to the inside. It includes a film (support layer), an adhesive layer, and a sealant layer 21 which is an unstretched resin film made of polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the body portion 31 included in the standing pouch 30 has a polyester film 11 (base material layer 24), a vapor-deposited film 12, an adhesive layer, polyethylene, or the like, from the outside to the inside. A sealant layer 21 which is an unstretched resin film made of polypropylene or the like is provided.
The above-mentioned thin-film deposition film 12 may be a colored vapor-film deposition film made of aluminum or the like, or a transparent thin-film deposition film made of a metal oxide such as silicon oxide. It is preferable to provide a gas barrier coating film so as to be adjacent to one surface of the vapor deposition film.
The bottom portion 32 included in the standing pouch 30 may also be configured by the laminated body 20 having the above-described configuration.
The laminated body 20 constituting the standing pouch 30 is merely an example, and the present invention is not limited thereto.

In one embodiment, the body portion 31 included in the standing pouch 30 can be formed by making a bag so that the sealant layer 21 included in the laminate 20 of the present invention is on the inside.

In one embodiment, the bottom portion 32 included in the standing pouch 30 can be formed by inserting the laminate 20 of the present invention between the bag-made side sheets and heat-sealing. More specifically, the laminated body 20 can be formed by folding it in a V shape so that the sealant layer 21 is on the outside, inserting it between the bag-made body portions 31, and heat-sealing it.

As a heat sealing method, for example, a known method such as a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, and an ultrasonic seal can be used.

FIG. 6 is a front schematic view showing an example of a pillow bag 40 which is an embodiment of a packaging bag. The laminated body 20 is made into a bag so that the sealant layer 21 is the innermost layer, and two opposite sides are heated. It can be manufactured by sealing.

In one embodiment, the laminate 20 constituting the pillow bag 40 is composed of a polyester film 11 (base material layer 24), a vapor-deposited film 12, an adhesive layer, polyethylene, polypropylene, or the like from the outside to the inside. The sealant layer 21 which is an unstretched resin film is provided.
In one embodiment, the laminate 20 constituting the pillow bag 40 is formed by melt-extruding a polyester film 11 (base material layer 24), a vapor-deposited film 12, polyethylene, polypropylene, or the like from the outside to the inside. It is provided with the sealed sealant layer 21.
In one embodiment, the laminate 20 constituting the pillow bag 40 melt-extrudes a polyester film 11 (base material layer 24), a vapor-deposited film 12, an adhesive layer, polyethylene, polypropylene, etc. from the outside to the inside. The sealant layer 21 is provided.
In one embodiment, the laminate 20 constituting the pillow bag 40 has a polyester film 11 (base material layer 24), a vapor deposition film 12, an adhesive layer, and a stretched resin film (support layer) from the outside to the inside. ), An adhesive layer, and a sealant layer 21 which is an unstretched resin film made of polyethylene, polypropylene, or the like.
The above-mentioned thin-film deposition film 12 may be a colored vapor-film deposition film made of aluminum or the like, or a transparent thin-film deposition film made of a metal oxide such as silicon oxide. It is preferable to provide a gas barrier coating film so as to be adjacent to one surface of the vapor deposition film.
The laminate 20 constituting the pillow bag 40 is merely an example, and is not limited thereto.

FIG. 7 is a front schematic view showing an example of a three-way seal type bag 50, and can be manufactured by stacking two laminated bodies 20 so that the sealant layers 21 face each other and heat-sealing the three sides.
FIG. 8 is a front schematic view showing an example of a four-sided seal type bag 60, and can be manufactured by stacking two laminated bodies 20 so that the sealant layers 21 face each other and heat-sealing the four sides.

In one embodiment, the laminate 20 constituting the three-way seal type bag 50 or the four-way seal type bag 60 has a polyester film 11 (base material layer 24), a vapor deposition film 12, and an adhesive layer from the outside to the inside. , A stretched resin film (support layer) and a sealant layer 21 formed by melt-extruding polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the three-way seal type bag 50 or the four-way seal type bag 60 has a polyester film 11 (base material layer 24), a vapor deposition film 12, and an adhesive layer from the outside to the inside. , A stretched resin film (support layer), an adhesive layer, and a sealant layer 21 formed by melt-extruding polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the three-way seal type bag 50 or the four-way seal type bag 60 is vapor-deposited with a polyester film (base material layer 24), a printing layer, an adhesive layer, and the like from the outside to the inside. A film 12, a polyester film 11 (support layer), an adhesive layer, and a sealant layer 21 which is an unstretched resin film composed of polyethylene, polypropylene, or the like are provided.
The "polyester film" may have the same structure as the "polyester film 11" or may have a different structure. The same applies to the subsequent configurations.
In one embodiment, the laminate 20 constituting the three-way seal type bag 50 or the four-way seal type bag 60 has a polyester film 11 (base material layer 24), a vapor deposition film 12, and an adhesive layer from the outside to the inside. A sealant layer 21 which is an unstretched resin film made of polyethylene, polypropylene, or the like is provided.
The above-mentioned thin-film deposition film 12 may be a colored vapor-film deposition film made of aluminum or the like, or a transparent thin-film deposition film made of a metal oxide such as silicon oxide. It is preferable to provide a gas barrier coating film so as to be adjacent to one surface of the vapor deposition film.
The laminate 20 constituting the three-way seal type bag 50 or the four-way seal type bag 60 is merely an example, and is not limited thereto.

(Cover material 70)
The laminated body 20 of the present invention can be used for the lid material 70 shown in FIG.
As shown in FIG. 9, the laminate 20 of the present invention is heat-sealed to the container body 71 so that the sealant layer 21 is on the inside.
The shape of the container body 71 may be a cup shape or a bottomed cylindrical shape as shown in FIG. 9, but is not limited to this.

In one embodiment, the laminate 20 constituting the lid material 70 has a polyester film (base material layer 24), an adhesive layer, a vapor-deposited film 12, and a polyester film 11 (support layer) from the outside to the inside. And a sealant layer 21 formed by melt-extruding polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the lid material 70 has a polyester film (base material layer 24), an adhesive layer, a vapor deposition film 12, and a polyester film 11 (support layer) from the outside to the inside. And an adhesive layer, and a sealant layer 21 formed by melt-extruding polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the lid material 70 has a polyester film 11 (base material layer 24), a vapor deposition film 12, a printing layer, an adhesive layer, and a polyester film (from the outside to the inside). A support layer), an adhesive layer, and a sealant layer 21 which is an unstretched resin film made of polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the lid material 70 has a polyester film 11 (base material layer 24), a vapor-deposited film 12, a printing layer, an adhesive layer, polyethylene or polypropylene from the outside to the inside. The sealant layer 21 which is an unstretched resin film composed of the above is provided.
The above-mentioned thin-film deposition film 12 may be a colored vapor-film deposition film made of aluminum or the like, or a transparent thin-film deposition film made of a metal oxide such as silicon oxide. It is preferable to provide a gas barrier coating film so as to be adjacent to one surface of the vapor deposition film.
The laminated body 20 constituting the lid material 70 is merely an example, and is not limited thereto.

(Laminate tube 80)
The laminated body 20 of the present invention can be used as a material constituting the laminated tube 80.
FIG. 10 is a partial cross-sectional view showing an example of the laminated tube 80. As shown in FIG. 10, the laminated tube 80 includes a head portion 81 and a tubular body portion 82 composed of the laminated body 20 of the present invention.

As shown in FIG. 10, the head 81 includes a spout portion 83 and a shoulder portion 84.
The tubular body portion 82 is in contact with the shoulder portion 84 of the head portion 81.

In one embodiment, the laminated body 20 constituting the tubular body portion 82 included in the laminated tube 80 has a second sealant layer 23 formed by melt-extruding polyethylene, polypropylene, or the like from the outside to the inside. , A polyester film 11 (base material layer 24), a vapor deposition film 12, a printing layer, an adhesive layer, and a first sealant layer 22 which is an unstretched resin film composed of polyethylene, polypropylene, or the like.
In one embodiment, the laminated body 20 constituting the tubular body portion 82 included in the laminated tube 80 is a second sealant layer 23 which is an unstretched resin film made of polyethylene, polypropylene, or the like from the outside to the inside. The first sealant layer 22 which is an unstretched resin film composed of an adhesive layer, a polyester film 11 (base material layer 24), a vapor deposition film 12, a printing layer, an adhesive layer, polyethylene, polypropylene, and the like. And.
In one embodiment, the laminated body 20 constituting the tubular body portion 82 included in the laminated tube 80 is a second sealant layer 23 which is an unstretched resin film made of polyethylene, polypropylene, or the like from the outside to the inside. It is composed of an adhesive layer, a polyester film (base material layer 24), a printing layer, an adhesive layer, a vapor deposition film 12, a polyester film 11 (support layer), an adhesive layer, polyethylene, polypropylene, and the like. It is provided with a first sealant layer 22 which is an unstretched resin film.
In one embodiment, the laminated body 20 constituting the tubular body portion 82 included in the laminated tube 80 is a second sealant layer 23 which is an unstretched resin film made of polyethylene, polypropylene or the like from the outside to the inside. An adhesive layer, a polyester film (base material layer 24), a printing layer, an adhesive layer, a polyethylene film (support layer), an adhesive layer, a polyester film 11 (support layer), and a vapor deposition film 12. And a first sealant layer 22 which is an unstretched resin film made of polyethylene, polypropylene, or the like.
In one embodiment, the laminated body 20 constituting the tubular body portion 82 included in the laminated tube 80 is a second sealant layer 23 which is an unstretched resin film made of polyethylene, polypropylene or the like from the outside to the inside. , Adhesive layer, polyester film (base material layer 24), printing layer, adhesive layer, polyethylene film (support layer), adhesive layer, vapor deposition film 12, and polyester film 11 (support layer). And a first sealant layer 22 which is an unstretched resin film made of polyethylene, polypropylene, or the like.
The above-mentioned thin-film deposition film 12 may be a colored vapor-film deposition film made of aluminum or the like, or a transparent thin-film deposition film made of a metal oxide such as silicon oxide. It is preferable to provide a gas barrier coating film so as to be adjacent to one surface of the vapor deposition film.
The laminated body 20 constituting the tubular body portion 82 included in the laminated tube 80 is merely an example, and is not limited thereto.

In one embodiment, the tubular body portion 82 can be manufactured by superimposing the first sealant layer 22 at both ends of the laminated body 20 and the second sealant layer 23, and heat-sealing the overlapped portions. .. In addition, the present invention is not limited to this, and the first sealant layers 22 at both ends or the second sealant layers 23 may be heat-sealed.

The method for manufacturing the head 81 is not particularly limited, and the head 81 can be manufactured by a conventionally known method. For example, the head 81 can be manufactured by a compression molding method (compression molding method) or an injection molding method (injection molding method), and can be joined to one open end of the cylindrical body portion 82.
After joining the head 81, the laminated tube 80 can be obtained by filling the contents from the other open end, heat-sealing the open end, and forming the bottom seal portion 85.
The spout portion 83 may be provided with a thread for screwing the cap 86.

(Paper container 90)
The laminated body 20 of the present invention can be used as a material constituting the paper container 90. FIG. 11 is a perspective view showing an example of the paper container 90.
The paper container 90 includes a body portion 91, a bottom portion 92, and an upper portion 93.
FIG. 11 shows, but is not limited to, a paper container 90 having a square cylindrical body portion 91.

In one embodiment, the upper portion 93 is located between the pair of inclined plates 94 and the inclined plates 94 facing each other, and includes a pair of folding portions 95 folded between the inclined plates 94.
Each of the pair of inclined plates 94 is provided with a margin 96 at the upper end and is bonded to each other. In one embodiment, a spout 97 is attached to one of the inclined plates 94 provided in the upper portion 93, and a cap 98 can be attached, but the present invention is not limited to this, and the configuration does not have the spout 97. May be good.

In one embodiment, the laminate 20 constituting the paper container 90 has a second sealant layer 23 formed by melt-extruding polyethylene, polypropylene, or the like from the outside to the inside, a printing layer, and a paper base. It includes a material, an adhesive layer, a vapor-deposited film 12, a polyester film 11 (support layer), an adhesive layer, and a first sealant layer 22 which is an unstretched resin film composed of polyethylene, polypropylene, or the like.
The above-mentioned thin-film deposition film 12 may be a colored vapor-film deposition film made of aluminum or the like, or a transparent thin-film deposition film made of a metal oxide such as silicon oxide. It is preferable to provide a gas barrier coating film so as to be adjacent to one surface of the vapor deposition film.
The laminated body 20 constituting the tubular body portion 82 included in the paper container 90 is merely an example, and is not limited thereto.

The paper container 90 can be manufactured by making a box by a conventionally known method. Further, the shape of the paper container is not limited to the gable top type shown in FIG. 11, and can be appropriately changed depending on the contents to be filled, such as a brick type.

(Paper cup 100)
The laminated body 20 of the present invention can be used as a material constituting the paper cup 100.
In FIG. 12, a part was excised. It is a perspective view which shows an example of a paper cup 100.
As shown in FIG. 12, the paper cup 100 includes a body 101 and a bottom 102. FIG. 12 shows, but is not limited to, a cylindrical body 101 that gradually expands toward the opening.
In one embodiment, as shown in FIG. 12, the body portion 101 includes a flange portion 103 whose opening end is rounded outward.
In one embodiment, the paper cup 100 may include a lid material to be attached along the flange portion 103 (not shown).

In one embodiment, the laminate 20 constituting the paper cup 100 includes a printing layer, a paper base material, an adhesive layer, a vapor-deposited film 12, and a polyester film 11 (support layer) from the outside to the inside. It includes a sealant layer 21 formed by melt-extruding polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the paper cup 100 includes a printing layer, a paper base material, an adhesive layer, a vapor deposition film 12, and a polyester film 11 (support layer) from the outside to the inside. It includes an adhesive layer and a sealant layer 21 formed by melt-extruding polyethylene, polypropylene, or the like.
In one embodiment, the laminate 20 constituting the paper cup 100 has a second sealant layer 23 formed by melt-extruding polyethylene, polypropylene, or the like from the outside to the inside, a printing layer, and a paper base material. The adhesive layer, the vapor-deposited film 12, the polyester film 11 (support layer), and the first sealant layer 22 formed by melt-extruding polyethylene, polypropylene, or the like are provided.
In one embodiment, the laminate 20 constituting the paper cup 100 has a second sealant layer 23 formed by melt-extruding polyethylene, polypropylene, or the like from the outside to the inside, a printing layer, and a paper base material. The adhesive layer, the vapor-deposited film 12, the polyester film 11 (support layer), the adhesive layer, and the first sealant layer 22 formed by melt-extruding polyethylene, polypropylene, or the like are provided.
The above-mentioned thin-film deposition film 12 may be a colored vapor-film deposition film made of aluminum or the like, or a transparent thin-film deposition film made of a metal oxide such as silicon oxide. It is preferable to provide a gas barrier coating film so as to be adjacent to one surface of the vapor deposition film.
The laminate 20 constituting the paper cup 100 is merely an example, and the present invention is not limited thereto.

An example of a method for manufacturing the paper cup 100 will be described below with reference to FIG. 13.
First, as shown in FIG. 13, the laminated body 20 of the present invention is cut out to manufacture a fan-shaped body blank 101'. Next, the body blank 101'is rolled into a cylindrical shape, and both ends 101'a are overlapped and heat-sealed in a multi-state to form a body pasting portion 104.
Next, the laminated body 20 of the present invention is cut out to manufacture a circular bottom blank 102', and then the outer peripheral edge thereof is bent downward to form a bent portion 102'a.
Next, the paper cup 100 is obtained by fitting and heat-sealing the bent portion 102'a of the bottom blank 102'so that it is wrapped in the lower end of the body blank 101'a.
If desired, the open end of the body portion may be rounded outward to form the flange 103.

Next, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the description of the following Examples as long as the gist of the present invention is not exceeded.

(Example 1-1)
Chemically recycled polyethylene terephthalate and fossil fuel polyethylene terephthalate are mixed at a ratio of 5: 5 on a mass basis, and this PET mixture is extruded and film-formed by the T-die method, then biaxially stretched to a thickness of 12 μm. The polyester film 11 of the above was manufactured.

A 20 nm-thick aluminum oxide vapor-deposited film 12 was formed on one surface of the polyester film 11 by the PVD method to obtain the thin-film resin film 10 of the present invention.

(Example 1-2)
Chemically recycled polyethylene terephthalate and fossil fuel polyethylene terephthalate are mixed at a ratio of 7: 3, and this PET mixture is extruded by the T-die method and then biaxially stretched to a thickness of 12 μm. The polyester film 11 of the above was manufactured.

A 20 nm-thick aluminum oxide vapor-deposited film 12 was formed on one surface of the polyester film 11 by the PVD method to obtain the thin-film resin film 10 of the present invention.

(Comparative Example 1-1)
The fossil fuel polyethylene terephthalate was extruded by the T-die method and then biaxially stretched to produce a polyester film having a thickness of 12 μm.

A 20 nm thick aluminum oxide vapor-deposited film was formed on one surface of this polyester film by the PVD method to obtain a thin-film resin film.

<< Measurement of composition ratio of low molecular weight components >>
The polyester films obtained in the above Examples and Comparative Examples were prepared, cut out by 10 g each, and weighed in a 30 mL vial. An HFIP / chloroform mixed solution was added to the vial, and the mixture was allowed to stand for 12 hours to dissolve it.
After standing, chloroform was added and diluted to prepare a 0.1% solution.
This solution was filtered using a 0.45 μm hydrophilic PTFE membrane filter cartridge (Millex-LH manufactured by Merck Millipore), and the obtained filtrate was subjected to GPC measurement under the following conditions.
In the obtained molecular weight distribution curve, the area ratio of the region having a molecular weight of 1,000 or less was determined. Table 1 shows the area ratio of the region having a molecular weight of 1,000 or less. Note that FIG. 14 shows a molecular weight distribution curve in a region having a molecular weight of 1,000 or less.
(Measurement condition)
-Column used: 2xPLgel 5μ MIXED (7.5mm x 300mm) manufactured by Agilent Technologies.
-Column temperature: 40 ° C
-Mobile phase: Chloroform (manufactured by Fuji Film Wako Pure Chemical Industries, Ltd., for liquid chromatography)
・ Flow rate: 1.0 mL / min
・ Injection amount: 2.5 μL
-Detection: 254 nm (ultraviolet-visible detector)
-Molecular weight calibration: monodisperse polystyrene (manufactured by Agilent Technologies, PS-1)
-Equipment: 515 HPLC pump, 717plus automatic injection device, ultraviolet-visible light detector (manufactured by Waters)

<< Measurement of content of cyclic trimer >>
The polyester films obtained in the above Examples and Comparative Examples were prepared. A sample of about 0.1 g was taken from the polyester film, and this sample was dissolved in a mixed solution of hexafluoroisopropanol (HFIP) and chloroform. Acetonitrile was added to this solution to precipitate the polymer, and then the precipitate was filtered. The filtrate was evaporated to dryness and the resulting residue was dissolved in dimethylformamide (DMF). This solution was analyzed by high performance liquid chromatography (HPLC) and the content of cyclic trimer was measured. The measurement results are shown in Table 1. The measurement conditions were as follows.
(Measurement condition)
・ Equipment: LC-20 manufactured by Shimadzu Corporation
-Column used: Develosil ODS-HG-3 3μ (4.6 x 150 mm) manufactured by Nomura Chemical Co., Ltd.
-Column temperature: 40 ° C
-Mobile phase: 0.5% by volume acetic acid aqueous solution / acetonitrile / acetonitrile (gradient)
・ Flow rate: 1.0 mL / min
・ Injection amount: 15 μL
-Detection: 254 nm (ultraviolet-visible detector)
・ Equipment: LC-20 manufactured by Shimadzu Corporation

<< Measurement of crystallization temperature and melting point >>
The polyester films obtained in the above Examples and Comparative Examples were prepared, and 5 mg each was cut out to obtain a sample.
The sample was heated from 20 ° C. to 300 ° C. at a rate of 10 ° C./min and held at 300 ° C. for 5 minutes. Then, the temperature was lowered from 300 ° C. to 20 ° C. at a rate of −10 ° C./min. Then, it was held at 20 ° C. for 5 minutes. Again, the temperature was raised from 20 ° C. to 300 ° C. at a rate of 10 ° C./min. This gave a melting curve.
The main peak in the temperature lowering stage of this melting curve was defined as the crystallization temperature, and the main peak in the second temperature rising stage was defined as the melting point. The crystallization temperature and melting point are shown in Table 1.

<< Measurement of static friction coefficient >>
The thin-film resin films obtained in the above Examples and Comparative Examples were prepared, and the thin-film resin films were cut to prepare test pieces having a size of 200 mm × 150 mm.
Next, this test piece was attached and fixed to the sliding table of the testing machine with cellophane tape so that the polyester film was on the upper side.
Next, the test piece obtained by cutting the vapor-film resin film into 70 mm × 100 mm was wound around a metal thread (weight 200 g) of 63 mm × 63 mm × 6.3 mm so that the vapor-film film was on the inside and the polyester film was on the outside.
Next, it was placed on a fixed vapor-film resin film so that the polyester films were in contact with each other.
Next, in an environment of 23 ° C. and a relative humidity of 50%, the metal thread around which the test piece was wound was slid at a speed of 100 mm / min, and a friction measuring instrument (TR-2 manufactured by Toyo Seiki Co., Ltd.) was used. Measured using. The measurement results are shown in Table 1.

<< Evaluation of hygiene >>
The polyester films obtained in the above Examples and Comparative Examples were prepared, and the vapor-filmed resin films were cut to prepare test pieces having a size of 200 mm × 200 mm.
Next, 80 mL of ion-exchanged water was placed in a 100 mL glass flask, and the test piece was placed therein.
The opening of the glass flask was then covered with aluminum foil, the glass flask was placed in a water bath and heated at 80 ° C. for 60 minutes.
After cooling the glass flask to room temperature, changes in the taste of ion-exchanged water before and after the above treatment were confirmed by three panelists. Since the taste of ion-exchanged water changes when low-molecular-weight components are mixed in, the polyester film in which the taste of ion-exchanged water does not change can suppress the mixing of low-molecular-weight components into ion-exchanged water and is hygienic. Excellent in sex. Hygiene was evaluated based on the following evaluation criteria. The evaluation results are shown in Table 2. In Reference Example 1-1, the above is performed without using the test piece.
<Evaluation criteria>
A: All three did not notice the change in taste.
B: Two of the three did not notice the change in taste.
NG: Two or more of the three noticed a change in taste.

(Example 2-1)
The vapor-deposited resin film 10 was prepared in the same manner as in Example 1-1. The vapor-deposited resin film 10 and the biaxially stretched nylon film were bonded together by a dry laminating method using a two-component curable adhesive (manufactured by Toyo Morton: main agent TM556 / curing agent CAT56). The biaxially stretched nylon film of this dry laminate film and the unstretched polyethylene film were bonded together by a dry laminating method using a two-component curable adhesive.
As a result, a laminated body 20 in which a vapor-deposited resin film 10, an adhesive layer, a biaxially stretched nylon film, an adhesive layer, and a sealant layer were laminated in this order was obtained. The thin-film film 12 included in the thin-film resin film 10 is located on the adhesive layer side.

(Comparative Example 2-1)
A vapor-deposited resin film was prepared in the same manner as in Comparative Example 1-1. A laminated body was obtained in the same manner as in Example 2-1 except that this thin-film resin film was used as the thin-film resin film 10.

<< Measurement of oxygen permeability >>
The oxygen permeability was measured using the laminates obtained in Example 2-1 and Comparative Example 2-1. Oxygen permeability is measured in an environment with a temperature of 23 ° C and a relative humidity of 90% in accordance with the JIS K7126 method, and the measuring instrument is an oxygen permeability measuring device (MOCON) [model name: OX-TRAN 2/21]) was used. The measurement results are shown in Table 3.

<< Measurement of water vapor transmission rate >>
The water vapor transmission rate was measured using the laminates obtained in Example 2-1 and Comparative Example 2-1. The water vapor transmission rate is measured in an environment of a temperature of 40 ° C. and a relative humidity of 90% in accordance with the JIS K7129 method. The name, PERMATRAN 3/33]) was used. The measurement results are shown in Table 3.

10: Vapor-deposited resin film 11: Polyester film 12: Vapor-deposited film 20: Laminated body 21: Sealant layer 22: First sealant layer 23: Second sealant layer 24: Base material layer 25: Intermediate layer 30: Standing pouch 31: Body 32: Bottom 40: Pillow bag 50: Three-way seal type bag 60: Four-way seal type bag 70: Lid material 71: Container body 80: Laminated tube 81: Head 82: Cylindrical body 83: Injection outlet 84: Shoulder 85: Bottom seal 86: Cap 90: Paper container 91: Body 92: Bottom 93: Top 94: Inclined plate 95: Folded part 96: Margin 97: Outlet 98: Cap 100: Paper cup 101: Body 101': Body blank 101'a: Both ends 102 of the body blank: Bottom 102': Bottom blank 102'a: Bending part 103: Flange part 104: Body pasting part

Claims (1)

A thin-film resin film including a polyester film and a thin-film film.
The polyester film contains chemically recycled polyester and contains
A vapor-deposited resin film in which the area ratio of a region having a molecular weight of 1,000 or less in the molecular weight distribution curve obtained from the GPC measurement of the polyester film is 1.8% or less of the total peak area.

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