JP2002019003A - Lid material for aseptic rice-packing container and aseptically packed rice with use of it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid material for an aseptic rice-packing container which, in aseptically packed rice, especially as a plastic lid material, has strength, etc., is excellent in heat resistance, moisture-proofing properties, heat-sealing properties, pinhole resistance, stab resistance, transparency, etc., excellent in gas-barrier properties for preventing the permeation of oxygen gas, water vapor, etc., has an aptitude for packing/packaging/preserving contents, does not generate harmful substances, etc., when subjected to incineration disposal treatment after being used, and is excellent in disposal treatment aptitude, environmental aptitude, etc., and aseptically packed rice with the use of it. SOLUTION: The lid material in which a base material film, a resin film having a vapor-deposition film of an inorganic oxide, and a heat-sealing resin layer are laminated in turn and a heat-sealing resin layer is formed on the adhesive layer and the aseptically packed rice with the use of it are concerned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid material for a container for filling aseptic cooked rice and aseptic packaged cooked rice using the same, and more particularly, to a heat-resistant, moisture-proof, heat-resistant, etc. having strength and the like.
Excellent sealability, pinhole resistance, puncture resistance, transparency, etc., and excellent barrier properties to prevent oxygen gas, water vapor, etc. from permeating. Further, the present invention relates to a lid material for a sterile cooked rice filling container which is extremely excellent in disposal suitability, environmental suitability, etc. without generating harmful substances when incinerated and disposed of after use, and aseptic packaged rice using the same. Things.

[0002]

2. Description of the Related Art In recent years, rice cooked aseptically at normal pressure is
Filled in a packaging container made of a plastic tray or the like sterilized in an aseptic atmosphere, and then aseptically packaged rice cooked by sealing the opening with a plastic lid or the like is commercially available, It is growing rapidly. Thus, the above-mentioned aseptic packaged rice usually passes through processes such as milling, washing and dipping, draining, and the like, and then, in a clean room or clean booth, weighing filling, continuous cooking,
The cooked rice is filled in a packaging container made of a plastic tray or the like, and a rice cooking / packaging process consisting of hermetically sealed packaging or the like, in which the opening of the packaging container is sealed with a plastic lid or the like, is then passed. It is manufactured through a process consisting of cold, boxing, and inspection. In the manufacturing process of the aseptic-packed cooked rice as described above, as a packaging container made of a plastic tray or the like, for example, a polypropylene resin is used, and a polypropylene resin tray-shaped package obtained by molding the same is used. Container or polypropylene resin layer / polyvinylidene chloride resin layer as barrier material for preventing permeation of oxygen, water vapor, etc. or three layers composed of ethylene-vinyl alcohol copolymer layer / polypropylene resin layer A tray-like packaging container formed by using a co-extruded film and forming it by vacuum or air pressure, and the like are used. Further, as a plastic lid material which is filled with cooked rice in a packaging container or the like made of a plastic tray or the like, and then sealed and sealed in the opening thereof, for example, oxygen gas, water vapor and the like can be transmitted therethrough. Laminated material laminated using a single-layer film of polyvinylidene chloride-based resin that is excellent in blocking gas barrier properties, laminated material laminated using a co-extruded film also using polyvinylidene chloride-based resin, or Similarly, a lid member made of a laminated material or the like laminated using a coat film made of a polyvinylidene chloride-based resin composition is used. In addition, as a barrier material, an ethylene-vinyl alcohol copolymer film is used, and a lid member or the like made of a laminated material obtained by laminating this with another plastic film or the like is also used.

[0003]

In the meantime, with respect to the aseptic packaged rice as described above, for example, a polypropylene resin is used as a packaging container made of a plastic tray or the like as described above, and this is molded. If a tray-like packaging container made of polypropylene resin is used, it should be disposed of by incineration after use.
Since it is composed of a polyolefin-based resin, there are relatively few problems such as generation of harmful substances and impairing environmental suitability. However, in a tray-like packaging container using a polyvinylidene chloride resin as a barrier material or a plastic lid material using a polyvinylidene chloride resin or the like, permeation of oxygen gas, water vapor, etc. Although it has an expected effect in the gas barrier property of preventing chlorine, if it is disposed of as garbage after being used as a packaging container or lid material, for example, if it is disposed of by incineration, chlorine atom Because it contains, at the time of incineration disposal,
For example, it causes the generation of toxic gas such as dioxin, etc., and is liable to affect the human body. Therefore, it is not suitable for disposal and causes problems such as environmental destruction. There is. In the same manner as above, a tray-like packaging container using an ethylene-vinyl alcohol copolymer as a barrier material, or
In a lid material using an ethylene-vinyl alcohol copolymer film, oxygen gas,
Although the gas barrier property of preventing permeation of water vapor and the like has an expected effect, in a wet state, the gas barrier property of preventing permeation of oxygen gas, water vapor and the like is significantly reduced,
There is a problem that it cannot be used anymore. Therefore, the present invention, in sterile packaged rice, in particular, as a plastic lid material, having strength and the like,
It has excellent heat resistance, moisture resistance, heat sealability, pinhole resistance, puncture resistance, transparency, etc., and also has excellent barrier properties to prevent the transmission of oxygen gas, water vapor, etc. A lid material for aseptic cooked rice-filled containers that has filling and packaging suitability, storage suitability, etc., and does not generate harmful substances when incinerated and disposed of after use, and is extremely excellent in disposal treatment suitability and environmental suitability. And sterile-packed cooked rice using the same.

[0004]

The inventor of the present invention has conducted various studies to solve the above-mentioned problems, and as a result, has found that one of the surfaces of the substrate film has been coated with an inorganic oxide such as silicon oxide or aluminum oxide. Focusing on a barrier film having a structure provided with a film, and further focusing on using the barrier film in the middle, first, a substrate film, the above barrier film, and a heat-sealing resin The layers are sequentially laminated to produce a lid material for a sterile cooked rice-filled container, and thus the lid material is used, for example, a polypropylene-based resin formed by molding using a polypropylene-based resin. After filling the tray-shaped packaging container with cooked rice and then tightly adhering it to the flange of the opening of the packaging container with a heat seal or the like and sealingly packaging to produce aseptically packaged rice. , Strength, etc. Gender, moisture resistance, heat - tosyl - Le resistance, pinhole - Le resistance, penetration resistance, excellent transparency and the like, further,
Excellent barrier properties to prevent transmission of oxygen gas, water vapor, etc.
Aseptic rice-filled container that has the suitability for filling and packaging of its contents, preservation suitability, etc., and also has excellent disposal treatment suitability, environmental suitability, etc. without generating harmful substances when incinerated and disposed after use. The present invention has been completed by finding that a lid material for use and aseptic packaged cooked rice using the same can be produced.

That is, the present invention provides a base film, a resin film provided with an inorganic oxide vapor-deposited film,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid for a sterile cooked rice filling container characterized by sequentially laminating tosile resin layers, and a sterile packed cooked rice using the same.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The above-described lid material for aseptic rice-filled containers and the aseptic-packaged rice using the same according to the present invention will be described in more detail with reference to the drawings. Figure 1,
2 and 3 are schematic cross-sectional views showing a few examples of the layer structure of the lid material for the aseptic rice filling container according to the present invention, and FIG. 4 is a package used for the aseptic packaged rice according to the present invention. FIG. 5 is a schematic perspective view showing an example of the configuration of a container for rice, and FIG. 5 is a diagram illustrating a packaging container used for the aseptically packaged rice according to the present invention shown in FIG. An example of the structure of an aseptic-packaged cooked rice manufactured by heat-sealing and sealingly packing the lid for the aseptic cooked rice filling container according to the present invention shown in FIG. It is a schematic sectional drawing.

First, as shown in FIG. 1, a lid material A for a sterile cooked rice filling container according to the present invention comprises a base material film 1, a resin film 3 provided with an inorganic oxide vapor-deposited film 2, and a heat sink. The basic structure is that the sealable resin layer 4 is sequentially laminated. As a specific example of the lid material for the aseptic rice-filled container according to the present invention, as shown in FIG. 2, a base film 1, a printed pattern layer 5 provided on one surface of the base film, A resin film 3 provided with an adhesive layer 6 for coating, a deposited film 2 of inorganic oxide,
Primer - adhesive layer 7, laminating - DOO adhesive layer 6a, and heat - tosyl - illustrating the sterile boiled rice filling container lid A ₁ according to the present invention having the structure obtained by sequentially stacking Le resin layer 4 be able to. Further, as another specific example of the lid material for the aseptic rice filling container according to the present invention, as shown in FIG. 3, a base film 1, a printed pattern layer 5 provided on one side of the base film, -Adhesive layer 6 for coating, resin film 3 provided with vapor-deposited film 2 of inorganic oxide, primer-
And adhesive layer 7, melt-extruded resin layer 8, heat - tosylate - can be exemplified such sterile boiled rice filling container lid A ₂ in the present invention having the structure obtained by sequentially stacking Le resin layer 4. The above examples illustrate a few examples of the lid material for aseptic rice filling containers according to the present invention, and the present invention is not limited thereto. For example, although not shown, in the lid material for a sterile cooked rice-filled container according to the present invention, the inorganic oxide vapor-deposited film is formed by stacking two or more inorganic oxide vapor-deposited films of the same or different kinds. Is what you can do. Further, in the above, the inorganic oxide vapor deposition film of the resin film provided with the inorganic oxide vapor deposition film may be laminated facing any side such as the outside or the inside.

Next, in the present invention, aseptic packed cooked rice using the above-mentioned lid for a sterile cooked rice filling container according to the present invention will be described. First, in the present invention, as shown in FIG. Using polypropylene resin, etc.
For example, using injection molding, extrusion molding, or a single film or co-extruded film thereof, using a thermoforming such as vacuum / pressure molding, etc., and having a flange portion 12 around the opening 11, A tray-shaped packaging container B having a rectangular shape having a side wall 13 and a bottom wall 14 hanging down from the flange portion 12 is manufactured. In the present invention, as shown in FIG. 5, the cooked rice 15 is weighed and filled into the tray-shaped packaging container B manufactured as described above. Tray filled with
The surface of the heat-sealing resin layer 4 of the lid A for the aseptic rice-filled container according to the present invention shown in FIG. 1 is opposed to the surface of the flange portion 12 of the opening 11 of the container B for packaging. Then, the surface of the flange portion 12 and the surface of the heat-sealing resin layer 4 are heat-sealed to form the seal portion 1.
By forming No. 6, the aseptic packaged cooked rice C according to the present invention can be manufactured. Of course, in the present invention, the above-described manufacturing process is performed in a clean room or clean booth as described above. The above-mentioned example is an example of the aseptic-packed cooked rice using the aseptic rice-filled container lid according to the present invention, and the present invention is not limited thereto. For example, in the present invention, although not shown, the lid for a sterile cooked rice filling container according to the present invention shown in FIGS. 2 and 3 described above is used, and the same as above. Aseptic packaging cooked rice using the lid material for cooked rice filling containers can be manufactured. In the present invention, although not shown, the tray-shaped packaging container may be in the form of a rectangle, a triangle, a pentagon, a hexagon, other polygons, a circle, a diamond, etc., as described above. Of course, it can take any other form such as,

Next, in the present invention, the lid material for the aseptic rice filling container according to the present invention, the material constituting the aseptic packaged rice, etc., and the manufacturing method thereof will be described. First, the aseptic rice filling according to the present invention will be described. As the base material constituting the container lid material, aseptic-packaged cooked rice, etc., since this is the basic material constituting the aseptic rice-filled container lid material, aseptic-packaged cooked rice, etc., it is mechanical, physical, chemical, Uses a resin film or sheet with excellent properties in other properties, excellent strength, and excellent heat resistance, moisture resistance, pinhole resistance, puncture resistance, transparency, etc. can do. Specifically, for example, polyester resin, polyamide resin, polyaramid resin, polypropylene resin, polycarbonate resin, polyacetal resin, fluorine resin, and other tough resin films or Sheets can be used. Thus, as the resin film or sheet, an unstretched film,
Alternatively, any one of a stretched film stretched in a uniaxial direction or a biaxial direction can be used. Also,
In the present invention, the thickness of the resin film or sheet described above may be any thickness that can be held to the minimum necessary for strength, puncture resistance, rigidity, etc. On the other hand, there is a drawback that it rises. On the contrary, if it is too thin, strength, puncture resistance, rigidity, etc. decrease, which is not preferable. In the present invention, for the above reason, about 10 μm to 100 μm, preferably about 12 μm to 50 μm is the most desirable.

Thus, in the present invention, for example, characters, figures, symbols, patterns,
It is possible to form a printed pattern layer by printing a desired printed pattern made of other materials. The printing pattern layer contains one or more of ordinary ink vehicles as a main component, and if necessary, a plasticizer, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorber, and a curing agent. One or two or more additives such as an agent, a cross-linking agent, a lubricant, an antistatic agent, a filler, and the like are optionally added, and further, a coloring agent such as a dye or a pigment is added, and a solvent, a diluent, etc. The ink composition is prepared by sufficiently kneading the ink composition, and then using the ink composition, for example, printing methods such as gravure printing, offset printing, letterpress printing, screen printing, transfer printing, flexographic printing, etc. Using, on one side of the above base film,
It is possible to form a print pattern layer according to the present invention by printing a desired print pattern including characters, figures, symbols, patterns, and others.

In the above, as the ink vehicle,
Known ones, for example, linseed oil, cutting oil, soybean oil, hydrocarbon oil, rosin, rosin ester, rosin modified resin, shellac, alkyd resin, phenolic resin, maleic resin, natural resin, hydrocarbon resin , Polyvinyl chloride resin, polyvinyl acetate resin, polystyrene resin, polyvinyl butyral resin, acrylic or methacrylic resin, polyamide resin, polyester resin, polyurethane resin, epoxy resin, urea resin, melamine One or more of resins, amino alkyd resins, nitrocellulose, ethyl cellulose, chlorinated rubber, cyclized rubber, and others can be used.

Next, in the present invention, a vapor-deposited film of an inorganic oxide constituting a lid material for a sterilized rice-filled container, a sterile-packaged cooked rice and the like according to the present invention will be described. , And specifically, for example, by a chemical vapor deposition method such as a plasma chemical vapor deposition method, a thermal chemical vapor deposition method, or a photochemical vapor deposition method. De
It can be formed using a position method, a CVD method, or the like. More specifically, on one surface of a resin film, a monomer gas for vapor deposition such as an organic silicon compound is used as a raw material, and an inert gas such as an argon gas or a helium gas is used as a carrier gas. A vapor-deposited film of an inorganic oxide such as silicon oxide can be formed by using a low-temperature plasma-enhanced chemical vapor deposition method using an oxygen gas or the like as an oxygen supply gas and a low-temperature plasma generator or the like. In the above description, as the low-temperature plasma generator, for example, a generator such as a high-frequency plasma, a pulse wave plasma, or a microwave plasma can be used. Thus, in the present invention, a highly active and stable plasma is obtained. For this purpose, it is desirable to use a generator using a high-frequency plasma method.

More specifically, an example of a method of forming a deposited film of an inorganic oxide by the above-mentioned plasma enhanced chemical vapor deposition method will be described. FIG. 1 is a schematic configuration diagram of a low-temperature plasma-enhanced chemical vapor deposition apparatus showing an outline of a method for forming a deposited film of an object. As shown in FIG. 6, in the present invention, the vacuum chamber-2 of the plasma enhanced chemical vapor deposition apparatus 21 is used.
The resin film 24 is unwound from an unwinding roll 23 disposed in the inside 2, and the resin film 24 is further cooled at a predetermined speed via an auxiliary roll 25.
It is transported on six peripheral surfaces. In the present invention, oxygen gas, an inert gas, a monomer gas for vapor deposition of an organic silicon compound, and the like are supplied from the gas supply devices 27 and 28 and the raw material volatilization supply device 29, and the like. While adjusting the mixed gas composition for vapor deposition, the mixed gas composition for vapor deposition was introduced into the vacuum chamber 22 through the raw material supply nozzle 30 and was transferred onto the peripheral surface of the cooling / electrode drum 26 described above. Plasma is generated by the glow discharge plasma 31 on the resin film 24, and this is irradiated to form a deposited film of an inorganic oxide such as silicon oxide, thereby forming a film. In the present invention, at this time, a predetermined power is applied to the cooling / electrode drum 26 from a power supply 32 disposed outside the chamber.
In the vicinity of 6, a magnet 33 is arranged to promote the generation of plasma, and then the resin film 24 on which the deposited film of an inorganic oxide such as silicon oxide is formed is guided to a guide roll 34 or the like. The resin film having the inorganic oxide vapor-deposited film according to the present invention can be manufactured by winding the film on a winding roll 35 or the like. In the figure, 36
Represents a vacuum pump. The above exemplification is merely an example, and it goes without saying that the present invention is not limited thereby. Although not shown, in the present invention, as a deposited film of the inorganic oxide,
Not only a single layer of the inorganic oxide deposited film but also a multilayer film in which two or more layers are laminated may be used. Also, a material to be used may be used in one kind or a mixture of two or more kinds. A vapor-deposited film of an inorganic oxide mixed with a material may be formed.

In the above, the inside of the vacuum chamber 22 is
The pressure is reduced by the empty pump 36 and the degree of vacuum is 1 × 10^-1~ 1 × 1
0^-8Torr level, preferably vacuum degree 1 × 10^-3~ 1 ×
10 ^-7It is desirable to adjust to the Torr position.
You. Further, in the raw material volatile supply device 29,
And the gas supply devices 27 and 28
Mixed with oxygen gas, inert gas, etc. supplied from
Vacuum gas through the raw material supply nozzle 30
−22. In this case, the mixed gas
The content of the organic silicon compound in the
Content is about 10-70%, inert gas content
Can be in the range of about 10-60%, for example,
The mixing ratio of organic silicon compound, oxygen gas and inert gas
The ratio can be about 1: 6: 5 to 1:17:14.
On the other hand, the cooling / electrode drum 26
Since the voltage is applied, the source in the vacuum chamber 22 is
Between the opening of the feed nozzle 30 and the cooling / electrode drum 26
Glow discharge plasma 31 is generated in the vicinity, and this glow discharge plasma 31 is generated.
The discharge plasma 31 is composed of one or more gas components in a mixed gas.
Is derived from the minute, in this state, the resin
The film 24 is transported at a constant speed, and the glow discharge
The resin on the peripheral surface of the cooling / electrode drum 26 is
Of inorganic oxide such as silicon oxide on the film 24
A film can be formed. At this time,
The degree of vacuum in the vacuum chamber is 1 × 10^-1~ 1 × 10
^-FourTorr level, preferably vacuum degree 1 × 10^-1~ 1 × 1
0^-2It is desirable to prepare at the Torr position, and the resin
The transport speed of the film 74 is about 10 to 300 m / min,
Preferably, it is desirable to adjust to 50 to 150 m / min.
It is good.

The above-mentioned plasma chemical vapor deposition apparatus 2
In (1), a vapor-deposited film of an inorganic oxide such as silicon oxide is formed on the resin film 24 in the form of a thin film in the form of SiO _X while oxidizing a plasma-converted raw material gas with oxygen gas. The formed deposited film of an inorganic oxide such as silicon oxide is a continuous layer that is dense, has few gaps, and is highly flexible. The property is much higher than that of a deposited film of an inorganic oxide such as silicon oxide formed by a conventional vacuum deposition method or the like, and a sufficient barrier property can be obtained with a thin film thickness. In the present invention,
The surface of the resin film 24 is formed by the SiO _X plasma.
Since the resin film 24 is cleaned and polar groups and free radicals are generated on the surface of the resin film 24, a film having a high adhesion between the deposited film of the inorganic oxide such as silicon oxide and the resin film is required. This has the advantage of becoming Furthermore,
As described above, the degree of vacuum at the time of forming a continuous film of an inorganic oxide such as silicon oxide is about 1 × 10 ⁻¹ to 1 × 10 ⁻⁴ Torr, and preferably 1 × 10 ⁻¹ to 1 × 10 ^−2. Since the pressure is adjusted to the Torr level, the degree of vacuum in forming a deposited film of an inorganic oxide such as silicon oxide by a conventional vacuum deposition method is 1 × 10 ⁻⁴ to 1 ×.
Since the degree of vacuum is lower than that of 10 ^-5 Torr,
The vacuum setting time when exchanging the raw film such as the resin film 24 can be shortened, the degree of vacuum is easily stabilized, and the film forming process is stabilized.

In the present invention, a deposited silicon oxide film formed by using a vaporized monomer gas such as an organic silicon compound is chemically reacted with a vaporized monomer gas such as an organic silicon compound and oxygen gas. the reaction product is closely deposited on one surface of the resin film, dense, and forms a thin film rich in flexibility or the like, usually, the general formula SiO _X (provided that, X
Represents a number of 0 to 2), and is a continuous thin film mainly composed of silicon oxide. Thus, from the viewpoints of transparency, barrier properties, etc., the silicon oxide deposited film of the general formula Si
O _X (provided that, X represents represents. A number of 1.3 to 1.9) is intended is preferably a thin film mainly composed of vapor-deposited film of silicon oxide represented by. In the above description, the value of X changes depending on the molar ratio of the vaporized monomer gas to oxygen gas, the energy of the plasma, and the like. Is yellowish,
Transparency worsens.

The above-mentioned silicon oxide vapor-deposited film is mainly composed of silicon oxide, and further contains at least one compound of one or more of carbon, hydrogen, silicon and oxygen. It is characterized by comprising a deposited film containing the kind by a chemical bond or the like. For example,
When the compound having a C—H bond, the compound having a Si—H bond, or the carbon unit is in a graphite-like, diamond-like, fullerene-like, or the like, the raw material organosilicon compound or a derivative thereof is further added. It may be contained due to chemical bonding or the like. To give a specific example, CH
Hydrocarbon with _three sites, SiH ₃ silyl, Si
Examples thereof include hydrosilica such as H ₂ silylene and hydroxyl derivative such as SiH ₂ OH silanol. In addition to the above, by changing the conditions and the like of the vapor deposition process, the type, amount, and the like of the compound contained in the vapor-deposited silicon oxide film can be changed. The content of the above compound in the silicon oxide vapor deposition film is 0.1 to 5%.
About 0%, preferably about 5 to 20% is desirable. In the above, if the content is less than 0.1%,
Impact resistance, spreadability, flexibility, etc. of the deposited film of silicon oxide become insufficient, and due to bending, scratches, cracks, etc. are easily generated, and it becomes difficult to stably maintain high barrier properties, On the other hand, if it exceeds 50%, the barrier properties are undesirably reduced. Furthermore, in the present invention, the content of the above compound in the silicon oxide vapor deposition film is preferably reduced in the depth direction from the surface of the silicon oxide vapor deposition film, whereby the silicon oxide vapor deposition film is formed. On the surface of the resin, the impact resistance and the like can be enhanced by the above-mentioned compounds, and on the other hand, at the interface with the resin film, the content of the above-mentioned compound is small, so that the resin film and the silicon oxide deposited film Has the advantage that the tight adhesion of the polymer becomes strong.

Thus, in the present invention, the above-mentioned silicon oxide vapor-deposited film is, for example, an X-ray photoelectron spectrometer (Xr
ay Photoelectron Spectros
copy, XPS), secondary ion mass spectrometer (Sec.)
onion Ion Mass Spectrosc
The above physical properties are confirmed by performing elemental analysis of a deposited silicon oxide film using a method of performing analysis by ion etching in the depth direction or the like using a surface analysis device such as O.I. can do. In the present invention, the thickness of the deposited silicon oxide film is preferably about 50 to 4000 °, and specifically, about 100 to 1000 °. Then, in the above, 1000 °, furthermore, 40
When the thickness is more than 00 °, cracks and the like are easily generated in the film, which is not preferable.
If it is less than 0 °, it is not preferable because it is difficult to exhibit the effect of the barrier property. In the above description, the film thickness can be measured by a fundamental parameter method using, for example, a fluorescent X-ray analyzer (model name: RIX2000) manufactured by Rigaku Corporation. Further, in the above, as a means for changing the thickness of the deposited film of silicon oxide, increasing the volume velocity of the deposited film, that is, a method of increasing the amount of the monomer gas and the oxygen gas or the rate of the deposition. It can be performed by a method of slowing down.

Next, in the above description, as a monomer gas for vapor deposition of an organic silicon compound or the like for forming a vapor deposition film of an inorganic oxide such as silicon oxide, for example, 1.1.3.3-tetramethyldisiloxane, Hexamethyldisiloxane, vinyltrimethylsilane, methyltrimethylsilane, hexamethyldisilane, methylsilane, dimethylsilane, trimethylsilane, diethylsilane, propylsilane, phenylsilane, vinyltriethoxysilane, vinyltrimethoxysilane, tetramethoxysilane, tetraethoxy Silane, phenyltrimethoxysilane, methyltriethoxysilane, octamethylcyclotetrasiloxane, and the like can be used. In the present invention, among the above-mentioned organosilicon compounds, the use of 1.1.3.3-tetramethyldisiloxane or hexamethyldisiloxane as a raw material is advantageous in handling properties and a formed continuous film. It is a particularly preferable raw material in view of its characteristics and the like. In the above description, as the inert gas, for example, argon gas, helium gas, or the like can be used.

Further, in the present invention, as a cover material for a sterile cooked rice-filled container according to the present invention, a vapor-deposited film of an inorganic oxide constituting a sterile-packed cooked rice or the like, for example, a vacuum vapor deposition method, a sputtering method, an ion plating method, or the like. Physical vapor deposition methods (Physical vapor deposition methods such as
It can be formed using a Vapor Deposition method or a PVD method. In the present invention, specifically, a metal oxide is used as a raw material, and the metal oxide or the metal oxide is used as a raw material, An amorphous thin film of an inorganic oxide is formed by using an oxidation reaction deposition method of introducing and oxidizing and depositing on a resin film, and a plasma-assisted oxidation reaction deposition method of further assisting the oxidation reaction by plasma. be able to. In the above, as a heating method of the evaporation material, for example, a resistance heating method, a high-frequency induction heating method, an electron beam heating method (EB), or the like can be used.

In the present invention, as the above-mentioned inorganic oxide vapor-deposited film, basically, any thin film on which a metal oxide is vapor-deposited can be used.
i), aluminum (Al), magnesium (Mg),
Calcium (Ca), potassium (K), tin (Sn),
Sodium (Na), boron (B), titanium (Ti),
A vapor-deposited film of an oxide of a metal such as lead (Pb), zirconium (Zr), or yttrium (Y) can be used. Thus, preferred are silicon (Si),
An evaporation film of a metal oxide such as aluminum (Al) can be given. Thus, the above-mentioned vapor-deposited film of a metal oxide can be referred to as a metal oxide, such as silicon oxide, aluminum oxide, and magnesium oxide. The notation is, for example, SiO _x , AlO _x , MO _X (However, as such MgO _X, wherein, M represents a metal element,
The range of the value of X differs depending on the metal element. )
It is represented by The range of the value of X is 0 to 2 for silicon (Si) and 0 to 2 for aluminum (Al).
1.5, magnesium (Mg) is 0-1, calcium (Ca) is 0, potassium (K) is 0-0.5,
Tin (Sn) is 0-2, and sodium (Na) is 0-2.
0.5, boron (B) is 0-1,5, titanium (Ti)
Is 0-2, lead (Pb) is 0-1, zirconium (Z
r) can have a value in the range of 0 to 2 and yttrium (Y) can have a value in the range of 0 to 1.5. In the above, when X = 0, it is a perfect metal, it is not transparent and cannot be used at all, and the upper limit of the range of X is a completely oxidized value. In the present invention, generally, silicon (S
i), except for aluminum (Al), few examples are used. Silicon (Si) has a value in the range of 1.0 to 2.0, and aluminum (Al) has a value in the range of 0.5 to 1.5. Can be used. In the present invention, the thickness of the inorganic oxide deposited film as described above, depending on the type of metal used, or metal oxide, etc., for example,
About 50-4000 °, preferably 100-1000 °
It is desirable to arbitrarily select and form within the range of the order.
In the present invention, the metal to be used as the inorganic oxide deposited film or the metal oxide is 1
It is also possible to use a mixture of two or more of these species to form a vapor-deposited film of an inorganic oxide mixed with different materials.

Next, in the present invention, a specific example of a method of forming the above-mentioned vapor-deposited film of inorganic oxide will be described. FIG. 7 is a schematic configuration diagram showing an example of a roll-up type vacuum vapor deposition apparatus. . As shown in FIG. 7, the unwinding roll is placed in a vacuum chamber 42 of a take-up type vacuum evaporation apparatus 41.
The resin film 44 fed out of the guide 43
Cooled coating drum 4 via
Guided to 7. Thus, on the resin film 44 guided on the cooled coating drum 47,
The evaporation source 49 heated in the crucible 48, for example, metal aluminum or aluminum oxide is evaporated,
Further, if necessary, while jetting oxygen gas or the like from the oxygen gas outlet 50, for example, through the masks 51, 51,
This is for forming a deposited film of an inorganic oxide such as aluminum oxide. Next, in the present invention, for example, the guide rolls 52, 5
The film can be wound around a winding roll 54 or the like via 3 or the like to produce a resin film having a vapor-deposited inorganic oxide film according to the present invention. The above exemplification is merely an example, and it goes without saying that the present invention is not limited thereby. In the present invention, first, a first-layer inorganic oxide vapor-deposited film is formed using the above-mentioned winding vacuum vapor deposition apparatus, and then, similarly, the inorganic oxide vapor-deposited film is formed. On top of this, an inorganic oxide vapor deposition film is further formed, or by using a roll-up vacuum vapor deposition device as described above, this is connected in series, and the inorganic oxide vapor deposition is continuously performed. By forming the film, an inorganic oxide vapor-deposited film including a multilayer film of two or more layers can be formed.

Next, in the present invention, the resin film constituting the resin film provided with the above-mentioned inorganic oxide vapor-deposited film has excellent chemical or physical strength,
The base material can be used because it can withstand the conditions for forming an inorganic oxide vapor-deposited film and the like and can favorably retain the properties of the inorganic oxide vapor-deposited film and the like without being impaired. In the present invention, as the resin film, specifically, for example, a polyolefin resin such as a polyethylene resin or a polypropylene resin, a cyclic polyolefin resin, a polystyrene resin, an acrylonitrile-styrene copolymer (AS resin) ), Acrylonitrile-butadiene-styrene copolymer (ABS resin), poly (meth) acrylic resin, polycarbonate resin, polyester resin such as polyethylene terephthalate, polyethylene naphthalate, etc. Films or sheets of various resins such as polyamide resin such as nylon, polyurethane resin, acetal resin, cellulose resin and others can be used. In the present invention, among the above resin films or sheets, it is particularly preferable to use a polyester resin, a polyolefin resin, or a polyamide resin film or sheet.

In the present invention, as the film or sheet of the above-mentioned various resins, for example, one or more of the above-mentioned various resins are used, and are extruded, cast-molded, T-die-processed, and cut. A method of forming the above various resins alone using a film forming method such as an inflation method, an inflation method, or the like, or a multi-layer coextrusion film forming using two or more kinds of various resins. A film or sheet of various resins is manufactured by a method of forming two or more resins, and a method of mixing and forming a film before forming a film. For example, various resin films or sheets stretched in a uniaxial or biaxial direction using a tenter method or a tuber method can be used. In the present invention, the film thickness of various resin films or sheets is 6 to 200 μm.
And more preferably about 9 to 100 μm.

When one or more of the various resins described above are used and the film is formed, for example, the processability, heat resistance, weather resistance, mechanical properties, dimensional stability,
It is possible to add various plastic additives and additives for the purpose of improving or modifying the antioxidant properties, slip properties, mold release properties, flame retardancy, anti-mold properties, electrical properties, strength, etc. Can,
The addition amount can be arbitrarily added from a very small amount to several tens% depending on the purpose. In the above, as a general additive, for example, a lubricant, a crosslinking agent,
An antioxidant, an ultraviolet absorber, a light stabilizer, a filler, a reinforcing agent, an antistatic agent, a pigment, and the like can be used, and further, a modifying resin and the like can be used.

In the present invention, the surface of the film or sheet of various resins may have a desired surface in advance, if necessary, in order to improve the tight adhesion with the inorganic oxide deposited film. A treatment layer can be provided. In the present invention, as the surface treatment layer, for example, corona discharge treatment, ozone treatment, low-temperature plasma treatment using oxygen gas or nitrogen gas, glow discharge treatment, oxidation treatment using a chemical, etc., Pretreatment such as others can be arbitrarily performed, and for example, a corona treatment layer, an ozone treatment layer, a plasma treatment layer, an oxidation treatment layer, and the like can be formed and provided. The above-mentioned surface pretreatment is carried out as a method for improving the tight adhesion between the film or sheet of various resins and the deposited film of the inorganic oxide. In addition, for example, a primer coat agent layer, an undercoat agent layer, an anchor coat agent layer, an adhesive layer may be previously formed on the surface of various resin films or sheets. Alternatively, a surface-treated layer can be formed by arbitrarily forming a vapor-deposited anchor coating agent layer or the like. Examples of the coating agent layer in the above pretreatment include polyester resin, polyamide resin, polyurethane resin, epoxy resin, phenol resin, (meth) acrylic resin, polyvinyl acetate resin, A resin composition containing, as a main component of the vehicle, a polyolefin resin such as polyethylene aliha polypropylene or a copolymer or modified resin thereof, a cellulose resin, or the like can be used.

Next, in the present invention, as a method of laminating the above-mentioned base film or a base film provided with a printed pattern layer on one surface thereof and a resin film provided with an inorganic oxide deposited film, For example, they can be laminated using a dry laminating method or the like via a laminating adhesive layer or the like. In the above description, examples of the laminating adhesive constituting the laminating adhesive layer include a polyvinyl acetate-based adhesive, ethyl and butyl acrylate, and the like.
Homopolymers such as 2-ethylhexyl ester, or these and methyl methacrylate, acrylonitrile,
Polyacrylate adhesives, cyanoacrylate adhesives, copolymers of ethylene and monomers such as vinyl acetate, ethyl acrylate, acrylic acid, methacrylic acid, etc. Adhesives, such as ethylene copolymer adhesives, cellulose adhesives, polyester adhesives, polyamide adhesives, polyimide adhesives, amino resin adhesives made of urea resin or melamine resin, and phenol resin adhesives Agents, epoxy adhesives, polyurethane adhesives, reactive (meth) acrylic adhesives,
Rubber-based adhesives such as chloroprene rubber, nitrile rubber, styrene-butadiene rubber, etc., silicone-based adhesives,
Inorganic adhesives made of alkali metal silicate, low melting point glass and the like, and other adhesives can be used.
The composition system of the above adhesive may be any composition such as an aqueous type, a solution type, an emulsion type, and a dispersion type, and
Its properties may be any form such as film / sheet, powder, solid, etc. Further, the bonding mechanism may be any form such as chemical reaction type, solvent volatilization type, hot melt type, hot pressure type etc. But it is good. Thus, in the present invention,
The laminating adhesive described above is applied to one surface of both layers, for example, by a coating method such as a roll coating method, a gravure roll coating method, a kiss coating method, or the like, or It is applied by a printing method or the like, and then a solvent or the like is dried to form an adhesive layer for a laminate. The coating or printing amount is 0.1 to 10 g / m ² (dry state). Position is desirable.

Next, in the present invention, the heat-sealing resin layer constituting the lid material for aseptic rice-filled container, aseptic packaged rice, etc. according to the present invention will be described.
The heat-sealing resin constituting the sealable resin layer may be any resin that can be melted by heat and fused to each other. For example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, Chain (linear) low-density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene -Propylene copolymer,
Acid-modified polyolefin resins obtained by modifying polyolefin resins such as methylpentene polymer, polyethylene and polypropylene with unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, etc. One or more resin films or sheets can be used. The film or sheet of the above resin can be used in a single layer or a multilayer, and the thickness of the film or sheet of the above resin is about 5 μm to 300 μm, preferably 1 μm to 300 μm.
About 0 μm to 110 μm is desirable. Further, in the present invention, the thickness of the resin film or sheet may be, for example, the surface of the flange of the opening of the tray-like packaging container with the lid material for the sterile cooked rice filling container according to the present invention. In order to prevent the occurrence of scratches, cracks, or the like on the inorganic oxide vapor deposition film constituting the resin film provided with the inorganic oxide vapor deposition film during heat sealing. It is preferable that the film thickness be relatively large, specifically, about 70 μm to 110 μm, and more preferably about 80 μm to 100 μm.

In the present invention, among the above resin films or sheets, it is particularly preferable to use linear low-density polyethylene. In other words, the linear low-density polyethylene has the advantage of improving the impact resistance with less propagation of breakage due to its tackiness, and also because the inner layer is in constant contact with the contents. It is also effective for preventing deterioration of environmental stress cracking resistance.
In the present invention, the linear low-density polyethylene,
Other resins can be blended, for example, by blending ethylene-butene copolymer or the like,
Although heat resistance is poor and seal stability tends to deteriorate in a high temperature environment, there is an advantage that tearability is improved and contributes to easy opening.

Further, in the present invention, the above-mentioned
Specific examples of the linear low-density polyethylene as a film or sheet of a resin having a sealing property include a film or sheet of an ethylene-α-olefin copolymer polymerized using a metallocene catalyst. It can be used as well. Examples of the film or sheet of the ethylene-α-olefin copolymer polymerized using the metallocene catalyst include, for example, a catalyst obtained by combining a metallocene complex such as a catalyst obtained by combining zirconocene dichloride and methylalumoxane with alumoxane. That is, a film or sheet of an ethylene-α-olefin copolymer obtained by polymerization using a metallocene catalyst can be used. The metallocene catalyst has a non-uniform active site and is called a multi-site catalyst, whereas the existing catalyst is called a single-site catalyst because the active site is uniform. Specifically, Mitsubishi Chemical Co., Ltd. product name "Kernel", Mitsui Petrochemical Industry Co., Ltd. product name "Evolu", USA, Exxon Chemical (E
XXON CHEMICAL) trade name "EXACT", Dow Chemical, USA (DOW)
CHEMICAL) "Affinity- (A
FFINITY), trade name "ENGAG (ENGAG)
E) ethylene-polymerized using a metallocene catalyst such as
An α-olefin copolymer film can be used. The film or sheet can be used as a single layer or a multilayer, and the thickness is 5 μm.
To about 300 μm, preferably 10 μm to 10 μm.
About 0 μm is desirable. In the present invention, when a film or sheet of an ethylene-α-olefin copolymer polymerized using a metallocene catalyst is used as a film of the resin having heat sealability as described above, a bag may be used. It has the advantage that low temperature heat sealability is possible when producing the body.

Next, in the present invention, the above-mentioned heat seal
As a method of laminating a hydrophilic resin layer on a resin film provided with the above-mentioned inorganic oxide vapor-deposited film, for example, a dry laminating method of laminating via a primer agent layer and a laminating adhesive layer Alternatively, lamination can be performed using a melt extrusion laminating method or the like in which a lamination is performed via a primer agent layer and a melt extruded resin layer.

In the above, as the primer agent layer,
First, a polyurethane-based resin is used as a main component of the vehicle, and a silane coupling agent is used in an amount of about 0.05 to 10% by weight, preferably 0.1 to 30% by weight, based on 1 to 30% by weight of the polyurethane-based resin.
1 wt% to 5 wt%, filler 0.1 to 20 wt%,
Preferably, it is added at a ratio of about 1 to 10% by weight,
If necessary, add additives such as stabilizers, curing agents, cross-linking agents, lubricants, ultraviolet absorbers, etc., add solvents, diluents, etc. and mix well to adjust the polyurethane resin composition Thus, the polyurethane-based resin composition is used, for example, roll coat, gravure coat,
The above-mentioned inorganic oxide vapor-deposited film is coated by knife coating, dip coating, spray coating, or another coating method, and then the coating film is dried to form a solvent, The diluent and the like can be removed, and if necessary, an aging treatment or the like can be performed to form the primer agent layer according to the present invention. In the present invention, the thickness of the primer agent layer is, for example, 0.1 g / m ^2.
It is preferably about 1.0 g / m ² (dry state). Thus,
In the present invention, the primer agent layer as described above improves, for example, the tight adhesion between the deposited film of the inorganic oxide and the heat-sealing resin layer, and also increases the elongation of the primer agent layer. It improves the post-processing suitability such as laminating or heat-sealing, and prevents the occurrence of cracks and the like in the inorganic oxide deposited film during the post-processing.

In the above description, as the polyurethane resin constituting the polyurethane resin composition, for example, a polyurethane resin obtained by reacting a polyfunctional isocyanate with a hydroxyl group-containing compound can be used. Specifically, for example, tolylene diisocyanate-
Aromatic polyisocyanate such as diphenylmethane diisocyanate, polymethylene polyphenylene polyisocyanate, or hexamethylene diisocyanate
And polyfunctional isocyanates such as aliphatic polyisocyanates such as xylylene diisocyanate and hydroxyl group-containing compounds such as polyether polyols, polyester polyols, polyacrylate polyols and the like. One- or two-component curable polyurethane resins obtained by the reaction can be used. Thus, in the present invention, by using the above-mentioned polyurethane-based resin, it is possible to improve the tight adhesion between the inorganic oxide vapor-deposited film and the heat-sealing resin layer, and to improve the primer agent layer. To improve the elongation of the material, for example, improve the post-processing suitability such as laminating or heat-sealing, and prevent the occurrence of cracks and the like in the deposited film of the inorganic oxide during the post-processing. It is.

Next, in the above, as the silane coupling agent constituting the polyurethane resin composition,
Binary reactive organofunctional silane monomers can be used, for example, γ-chloropropyltrimethoxysilane, vinyltrichlorosilane, vinyltriethoxysilane, vinyl-tris (β-methoxyethoxy)
Silane, γ-methacryloxypropyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, vinyltriacetoxysilane, γ-mercaptopropyltrimethoxysilane, N -Β (aminoethyl) -γ-aminopropyltrimethoxysilane, N-
β (aminoethyl) -γ-aminopropylmethyldimethoxysilane, γ-ureidopropyltriethoxysilane, bis (β-hydroxyethyl) -γ-aminopropyltriethoxysilane, aqueous solution of γ-aminopropylsilicone, etc. Seeds or more can be used.

In the silane coupling agent as described above, a functional group at one end of the molecule, usually, a chloro, alkoxy, or acetoxy group, is hydrolyzed to form a silanol group (SiOH). The metal constituting the vapor-deposited film of the inorganic oxide, or an active group on the surface of the vapor-deposited film of the inorganic oxide, for example, a functional group such as a hydroxyl group, by any action, for example, causing a reaction such as a dehydration condensation reaction, A silane coupling agent is modified by a covalent bond or the like on the surface of the inorganic oxide vapor-deposited film, and a strong bond is formed on the surface of the inorganic oxide vapor-deposited film of the silanol group itself by adsorption or hydrogen bonding. On the other hand, an organic functional group such as vinyl, methacryloxy, amino, epoxy, or mercapto at the other end of the silane coupling agent is formed on a thin film of the silane coupling agent. Agent layer, melt-extruded resin layer, reacts with substances constituting other layers and the like to form a strong bond, and further, the above-mentioned printed pattern layer,
The heat-sealing resin layer is firmly and tightly bonded via the laminating adhesive layer, the melt-extruded resin layer, etc.
Thus, in the present invention, a strong laminated structure having high laminate strength can be formed. In the present invention, the inorganic and organic properties of the silane coupling agent are utilized, and the heat-sealing is performed via a vapor-deposited film of an inorganic oxide, an adhesive layer for lamination, a melt-extruded resin layer, and the like. This improves the tight adhesion with the conductive resin layer, thereby increasing the laminate strength and the like.

Next, in the present invention, examples of the filler constituting the above-mentioned polyurethane resin composition include calcium carbonate, barium sulfate, alumina white, silica, talc, glass frit, resin powder, and the like. Can be used. Thus, the above filler is
The viscosity and the like of the polyurethane resin composition liquid are adjusted to improve the coating suitability, and the polyurethane resin as a binder resin is bonded via a silane coupling agent to improve the cohesive force of the coating film. It is to let. Next, in the above description, as the laminating adhesive constituting the laminating adhesive layer, for example, the laminating adhesive exemplified above can be similarly used. The printing or printing amount can be applied in the same manner as described above.

Further, in the above, as the melt-extruded resin constituting the melt-extruded resin layer, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear (linear) low-density polyethylene, metallocene-based catalyst can be used. Ethylene-α-olefin copolymer, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer Acids obtained by modifying polyolefin resins such as polymers, ethylene-propylene copolymers, methylpentene polymers, polyethylene and polypropylene with unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, etc. Modified polyolefin resin, etc. can be used In the present invention, when the melt extrusion lamination is performed, an isocyanate-based, polyethyleneimine-based, or other anchor coating agent can be optionally used. Furthermore, in the present invention, when performing the above-mentioned lamination, if necessary, for example, a pretreatment such as a corona treatment, an ozone treatment, or a framing treatment is optionally performed on the surface of the base material to be laminated. be able to.

By the way, the packaged product filled with the contents is usually subjected to severe physical and chemical conditions. Therefore, the laminated material constituting the packaging container, the lid material and the like includes: Strict packaging suitability is required, and various conditions such as deformation prevention strength, drop impact strength, pinhole resistance, heat resistance, sealing property, quality maintenance, workability, hygiene, etc. are required. In the present invention, in addition to the above-mentioned materials, other materials satisfying the above-mentioned conditions can be arbitrarily used. Specifically, for example, low-density polyethylene, medium-density polyethylene , High density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-A Acrylic acid or methacrylic acid copolymers, methylpentene tempo Lima -, polybutene resins,
Polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer, poly (meth) acrylic resin, polyacrylonitrile resin, polystyrene resin, acrylonitrile
Styrene copolymer (AS resin), acrylonitrile
Butadiene-styrene copolymer (ABS resin), polyester resin, polyamide resin, polycarbonate resin, polyvinyl alcohol resin, saponified ethylene-vinyl acetate copolymer, fluorine resin, A film or sheet of a known resin such as a diene resin, a polyacetal resin, a polyurethane resin, nitrocellulose, or the like can be arbitrarily selected and used. In addition, for example, synthetic paper can be used. In the present invention, the above-mentioned film or sheet can be used in any of unstretched and uniaxially or biaxially stretched. The thickness is arbitrary, but can be selected from a range of several μm to 300 μm. Further, in the present invention, the film or sheet may be any film such as an extruded film, an inflation film, or a coating film.

Particularly, in the present invention, other base materials include, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene having a barrier property for preventing permeation of water vapor, water and the like. Polyvinylidene chloride, polyvinyl alcohol, saponified ethylene-vinyl acetate copolymer having a barrier property of preventing the transmission of films or sheets of resin such as polypropylene and ethylene-propylene copolymer, oxygen gas, water vapor, etc. Films or sheets of various colored resins having light-shielding properties obtained by adding a colorant such as a pigment to the resin and other desired additives and kneading to form a film. Can be used. These materials are
One or more can be used in combination. The thickness of the film or sheet is arbitrary, but is usually about 5 μm to 300 μm,
Further, the thickness is preferably about 10 μm to 100 μm.

Next, in the present invention, the tray-like packaging container constituting the aseptic packaged rice cooked by using the lid for the aseptic rice filling container according to the present invention will be described.
Examples of such tray-shaped packaging containers include polyethylene resin, polypropylene resin, polystyrene resin, polycarbonate resin, polyacrylonitrile resin, polyester resin, polyamide resin, and acrylonitrile-styrene. Polymer, acrylonitrile-
A molding resin such as a butadiene-styrene copolymer, a polyvinyl acetal resin, a (meth) acrylic resin, and the like is used, and the molding resin is formed by, for example, injection molding, extrusion molding, or the like. A tray-like packaging container manufactured by molding with the use of a tray can be used. Alternatively, in the present invention, as the tray-like packaging container,
For example, one or more of the resins exemplified above are used, and they are extruded singly or co-extruded using, for example, a T-die extrusion method, an inflation extrusion method, etc. A single film or co-extruded film is manufactured, and then the single film or co-extruded film is used, and is formed by molding using a thermoforming method such as vacuum / pressure molding. Can be used.

Further, in the present invention, the tray-shaped packaging containers include, for example, polyethylene resins, polypropylene resins, polystyrene resins, and polycarbonate resins exemplified above. For molding of polyacrylonitrile resin, polyester resin, polyamide resin, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, polyvinyl acetal resin, (meth) acrylic resin, etc. Resin and, for example, ethylene-vinyl alcohol copolymer, polyacrylonitrile resin, nylon MX
Using D6 resin, a barrier resin having a property of blocking permeation of oxygen gas, water vapor and the like, etc.,
Co-extrusion using a T-die coextrusion method, an inflation coextrusion method, or the like, for example, a polypropylene resin layer / ethylene-vinyl alcohol copolymer,
Polyacrylonitrile resin or nylon MX
A co-extruded film or the like composed of 3 to 5 layers such as a D6 resin layer / polypropylene resin layer is manufactured, and the co-extruded film is used and formed by using a thermoforming method such as vacuum / pressure molding. A tray-shaped packaging container manufactured or the like can be used.

Next, in the present invention, the tray-shaped packaging container produced above is used, and the cooked rice is weighed from the opening in the tray-shaped packaging container. After filling, after that, the heat-sealing resin layer of the lid material for the sterile cooked rice filling container according to the present invention is provided on the surface of the flange portion of the opening of the tray-like packaging container filled with rice as described above. The surfaces of the flange portion and the surface of the heat-sealable resin layer are heat-sealed.
The aseptic packaged rice according to the present invention can be manufactured by forming a wrapped portion. Of course, in the present invention, the above-described manufacturing process is performed in a clean room or clean booth as described above. In the above, as a method of the heat seal, for example, a known method such as a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high-frequency seal, an ultrasonic seal, or the like is used. Can be performed in the following manner. Thus, the aseptic packaged rice cooked according to the present invention has strength and excellent durability, and has heat resistance, moisture resistance, heat sealability, pinhole resistance, and stab resistance. , Excellent in transparency, etc., furthermore, excellent in barrier properties to prevent permeation of oxygen gas, water vapor, etc., having suitability for filling and preserving the contents, preservation suitability, and the like. It has the advantage that it is extremely excellent in disposal suitability, environmental suitability, etc., without generating harmful substances and the like during incineration disposal treatment.

In the present invention, as the primer agent layer provided on the surface of the above-mentioned inorganic oxide vapor-deposited film, in addition to the above-mentioned primer agent layer made of the polyurethane resin segment, for example, Polyolefin resins such as polyester resins, polyamide resins, epoxy resins, phenol resins, (meth) acrylic resins, polyvinyl acetate resins, polyethylene aliha polypropylene, or copolymers or modified resins thereof, cellulose The primer agent layer can be formed by using a resin composition containing a base resin or the like as a main component of the vehicle. In the present invention, a primer coating agent layer is formed by coating using a coating method such as roll coating, gravure coating, kiss coating, or the like. The amount of coating varies depending on the material used and the like, but is about 0.1 to 10 g / m 2.
^{The 2} (dry) position is desirable.

[0044]

EXAMPLES The present invention will be described more specifically with reference to examples. Example 1 (1). A biaxially stretched nylon 6 film having a thickness of 15 μm was used, and was mounted on a delivery roll of a plasma-enhanced chemical vapor deposition apparatus. Then, a deposited film of silicon oxide having a thickness of 200 ° was formed. (Evaporation conditions) Reaction gas mixture ratio: hexamethyldisiloxane: oxygen gas: helium = 1.2: 5.0: 2.5 (unit: sl)
m) Ultimate pressure; 5.0 × 10 ⁻⁵ mbar Film forming pressure; 7.0 × 10 ⁻² mbar Line speed; 300 m / min Power; 35 kW Next, a silicon oxide vapor deposition film having a thickness of 200 ° Immediately after the formation, on the surface of the deposited silicon oxide film, using a glow discharge plasma generator, power: 9 kW, oxygen gas (O ₂ ): argon gas (Ar) = 7.0: 2.5 (unit) : Slm) and a mixed gas pressure of 6
× 10 ^-2 mbar, oxygen /
An argon mixed gas plasma treatment was performed to form a plasma treatment surface in which the surface tension of the silicon oxide deposited film surface was improved by 54 dyne / cm or more, thereby producing a barrier film according to the present invention. (2). On the other hand, a normal gravure ink composition was used on one side of a biaxially stretched nylon 6 film having a thickness of 15 μm,
By a gravure printing method, a predetermined print pattern composed of characters, figures, symbols, pictures, etc. was printed to form a print pattern layer. Next, a two-component curable polyurethane-based laminating adhesive was used on the entire surface including the printed pattern layer formed above, and this was applied to a film thickness of 4.0 g / m 2 by a gravure roll coating method. ² (dry state) to form a laminating adhesive layer. Next, the barrier film produced in the above (1) is coated with the biaxially stretched nylon 6 on the surface of the laminating adhesive layer formed above.
The films were superposed with their faces facing each other, and then both were dry-laminated. Next, on the plasma-treated surface of the silicon oxide vapor-deposited film of the dry-laminated barrier film, a polyurethane-based initial condensate, an epoxy-based silane coupling agent (8.0% by weight) and blocking prevention were applied. (1.0% by weight), and kneaded well to use a primer composition, which is gravure roll coated to a film thickness of 0.4 g / m ² (dry state). Thus, a primer agent layer was formed by coating. Further, a two-component curable polyurethane-based laminating adhesive is used on the entire surface including the primer agent layer formed as described above.
An adhesive layer for lamination was formed by coating so as to have a thickness of 4.0 g / m ² (dry state) by a coating method. Next, a linear low-density polyethylene film having a thickness of 50 μm is overlaid on the laminating adhesive layer surface formed above with the corona-treated surface facing the same, and then both are dry-laminated. Thus, a lid material for a container for filling sterile cooked rice according to the present invention was produced. (3). On the other hand, a polypropylene resin film having a thickness of 150 μm was used, and this was thermoformed using a vacuum / pressure molding method to produce a tray-shaped molded container made of polypropylene. Next, the polypropylene-made tray-shaped molded container produced above is sufficiently washed, and further sterilized with a hydrogen peroxide solution or the like, and then carried into a class 10,000 clean room. Next, in the clean room, the rice cooked in the clean room is also quantified and filled into the polypropylene tray-shaped molded container sterilized as described above. The linear low density of the lid material for aseptic cooked rice-filled containers manufactured in (2) above, washed in the same manner as above, and sterilized with a hydrogen peroxide solution, etc. The polyethylene films are superimposed on each other with the surfaces facing each other.
It was sealed, sealed, and allowed to cool to produce aseptically packaged cooked rice. The packaged product made of the aseptically packaged cooked rice produced above has excellent barrier properties against oxygen gas, water vapor, etc., and also has excellent laminate strength, etc., withstands distribution in the market, and is excellent in storage and storage. Met. .

Embodiment 2 (1). In the same manner as in Example 1 above, a biaxially stretched nylon 6 film having a thickness of 15 μm
A deposited film of silicon oxide having a thickness of 00 ° was formed, and a plasma-treated surface was further formed on the deposited film of the silicon oxide to produce a barrier film according to the present invention. (2). On the other hand, in the same manner as in the first embodiment,
Using a biaxially oriented polypropylene film of μm, a printed pattern layer is formed on one side thereof, and then an adhesive layer for laminating is formed on the entire surface including the printed pattern layer formed above, On the surface of the adhesive layer for laminating, the above (1)
Was dry-laminated.
Next, on the plasma-treated surface of the silicon oxide vapor-deposited film of the dry-laminated barrier film, a polyurethane-based initial condensate, an epoxy-based silane coupling agent (8.0% by weight) and blocking prevention were applied. (1.0% by weight), and kneaded well to use a primer composition, which is gravure roll coated to a film thickness of 0.4 g / m ² (dry state). Thus, a primer agent layer was formed by coating. Further, a low-density polyethylene was used on the entire surface including the primer agent layer formed above, and was melt-extruded to a thickness of 20 μm.
A 0 μm linear low-density polyethylene film was laminated with its corona-treated surfaces facing each other, and then both were melt-extruded and laminated to produce a lid material for aseptic rice-filled pox according to the present invention. . (3). Hereinafter, the aseptic-packaged cooked rice according to the present invention was manufactured in the same manner as in Example 1 above, using the lid material for the aseptic cooked rice-filled container manufactured above. The packaged product consisting of the sterile packaged rice cooked above is
It was excellent in barrier properties against oxygen gas, water vapor, etc., excellent in laminate strength, etc., withstanding distribution in the market, and excellent in storage and preservation. .

Embodiment 3 (1). As a base film, a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm was used.
The above biaxially stretched polyethylene terephthalate film was mounted on a delivery roll of a plasma chemical vapor deposition apparatus, and then unwound, and the following vapor deposition was performed on the corona-treated surface of the biaxially stretched polyethylene terephthalate film. Under the conditions, a deposited film of silicon oxide having a thickness of 200 ° was formed. (Evaporation conditions) Reaction gas mixture ratio: hexamethyldisiloxane: oxygen gas: helium = 1: 11: 10 (unit: slm) Degree of vacuum in vacuum chamber: 5.2 × 10 ⁻⁶ mbar In evaporation chamber Degree of vacuum: 5.1 × 10 ^-2 mbar Cooling / electrode drum supply power: 60 w / min / m ² Film transport speed: 90 m / min Vapor deposition surface: corona treated surface Immediately after the deposition film was formed, the surface of the silicon oxide film was deposited on the surface of the silicon oxide film.
In the same manner as described above, plasma treatment was performed to form a plasma-treated surface in which the surface tension of the silicon oxide deposited film surface was improved by 54 dyne / cm or more, thereby producing a barrier film according to the present invention. (2). On the other hand, a normal gravure ink composition was used on one side of a biaxially stretched nylon 6 film having a thickness of 15 μm,
By a gravure printing method, a predetermined print pattern composed of characters, figures, symbols, pictures, etc. was printed to form a print pattern layer. Next, a two-component curable polyurethane-based laminating adhesive was used on the entire surface including the printed pattern layer formed above, and this was applied to a film thickness of 4.0 g / m 2 by a gravure roll coating method. ² (dry state) to form a laminating adhesive layer. Next, the barrier film produced in the above (1) is superimposed on the surface of the laminating adhesive layer formed above with the surface of the biaxially stretched polyethylene terephthalate film facing the substrate. And both were dry-laminated. Next, on the plasma-treated surface of the silicon oxide vapor-deposited film of the dry-laminated barrier film, a polyurethane-based initial condensate, an epoxy-based silane coupling agent (8.0% by weight) and blocking prevention were applied. (1.0% by weight), and kneaded well to use a primer composition, which is gravure roll coated to a film thickness of 0.4 g / m ² (dry state). Thus, a primer agent layer was formed by coating. Further, a two-component curable polyurethane-based laminating adhesive is used on the entire surface including the primer agent layer formed as described above, and the adhesive is applied by a gravure roll coating method in the same manner as described above. 4.0 g / m
² Laminate by coating so as to be (dry)
An adhesive layer was formed. Next, a linear low-density polyethylene film having a thickness of 50 μm is overlaid on the laminating adhesive layer surface formed above with the corona-treated surface facing the same, and then both are dry-laminated. Thus, a lid material for a container for filling sterile cooked rice according to the present invention was produced. (3). On the other hand, a polypropylene resin was used and thermoformed using an injection molding method to produce a tray-shaped molded container made of polypropylene. Next, the polypropylene-made tray-shaped molded container produced above was sufficiently washed,
Furthermore, after sterilization treatment with a hydrogen peroxide solution or the like, class 10,
000 to the clean room, and then clean
In the room, the rice cooked in the clean room is also quantified and filled into the polypropylene-shaped tray-shaped container sterilized as described above. The surface of the linear low-density polyethylene film of the lid material for aseptic rice-filled containers prepared in the above (2), washed in the same manner as above, and sterilized with a hydrogen peroxide solution, etc. Were placed face-to-face, and then both were heat-sealed, hermetically sealed, and allowed to cool to produce aseptically packaged cooked rice. The packaged product made of the aseptically packaged cooked rice produced above has excellent barrier properties against oxygen gas, water vapor, etc., and also has excellent laminate strength, etc., withstands distribution in the market, and is excellent in storage and storage. Met.

Embodiment 4 (1). As a base film, a biaxially stretched nylon 6 film having a thickness of 15 μm was used. First, the above biaxially stretched nylon 6 film was mounted on a delivery roll of a take-up type vacuum evaporation apparatus, and then this was rolled. The aluminum is used as a vapor deposition source and oxygen gas is supplied to the corona-treated surface of the biaxially stretched nylon 6 film, and a vacuum vapor deposition method using an electron beam (EB) heating method is used under the following vapor deposition conditions. Then, a deposited film of aluminum oxide having a thickness of 200 ° was formed. (Evaporation conditions) Degree of vacuum in evaporation chamber: 2 × 10 ⁻⁴ mbar Degree of vacuum in winding chamber: 2 × 10 ⁻² mbar Electron beam power: 25 kW Film transport speed: 240 m / min Evaporation surface : Corona-treated surface Next, immediately after forming the above-described 200-mm-thick aluminum oxide vapor-deposited film, a plasma-treated surface was formed on the aluminum oxide-deposited film in the same manner as in Example 1 above. A barrier film according to the present invention was produced. (2). On the other hand, using a biaxially stretched polypropylene film having a thickness of 20 μm, a printed pattern layer is formed on one surface in the same manner as in Example 1 above, and then over the entire surface including the printed pattern layer formed above. Forming an adhesive layer for laminating, and further forming the above (1) on the surface of the adhesive layer for laminating.
The barrier film produced in the above was superposed with the surfaces of the biaxially stretched nylon 6 film facing each other, and then both were dry-laminated. Next, a primer agent layer was formed on the plasma-treated surface of the vapor-deposited aluminum oxide film of the barrier film dry-laminated in the same manner as in Example 1 above, and further the primer layer formed above was formed. An adhesive layer for laminating was formed on the entire surface including the agent layer. Next, a linear low-density polyethylene film having a thickness of 50 μm is overlaid on the laminating adhesive layer surface formed above with the corona-treated surface facing the same, and then both are dry-laminated. Thus, a lid material for a container for filling sterile cooked rice according to the present invention was produced. (3). On the other hand, polypropylene resin and nylon MXD6
Resin and these are co-extruded together with the inflation using an extrusion molding method to obtain a polypropylene resin layer having a thickness of 150 μm / a nylon MXD6 resin layer having a thickness of 100 μm / a polypropylene resin layer having a thickness of 50 μm.
A layer coextruded film was produced. Next, the three-layer co-extruded film produced above was used and thermoformed using a vacuum / pressure molding method to produce a tray-shaped molded container. Next, the tray-shaped molded container produced above is sufficiently washed, sterilized with a hydrogen peroxide solution or the like, and then carried into a class 10,000 clean room. In the room, the rice cooked in the clean room is also quantified and filled into the tray-shaped molded container sterilized as described above.
The linear low density of the lid material for aseptic cooked rice-filled containers manufactured in the above (2), washed in the same manner as above, and sterilized with hydrogen peroxide solution, etc. The polyethylene films were superposed on each other with their surfaces facing each other, and then both were heat-sealed and hermetically sealed, and allowed to cool as it was to produce aseptically packaged cooked rice. The packaged product made of the aseptically packaged cooked rice produced above has excellent barrier properties against oxygen gas, water vapor, etc., and also has excellent laminate strength, etc., withstands distribution in the market, and is excellent in storage and storage. Met.

Embodiment 5 (1). As a base film, a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm was used.
The above-mentioned biaxially stretched polyethylene terephthalate film was mounted on a delivery roll of a take-up type vacuum evaporation apparatus, and then unwound. The corona-treated surface of the biaxially stretched polyethylene terephthalate film was coated with aluminum. Was used as a vapor deposition source while supplying oxygen gas to form a 200-Å-thick aluminum oxide vapor-deposited film by a vacuum vapor deposition method using an electron beam (EB) heating method under the following vapor deposition conditions. (Evaporation conditions) Degree of vacuum in evaporation chamber: 2 × 10 ⁻⁴ mbar Degree of vacuum in winding chamber: 2 × 10 ⁻² mbar Electron beam power: 25 kW Film transport speed: 240 m / min Evaporation surface : Corona-treated surface Next, immediately after forming the above-described 200-mm-thick aluminum oxide vapor-deposited film, a plasma-treated surface was formed on the aluminum oxide-deposited film in the same manner as in Example 1 above. A barrier film according to the present invention was produced. (2). On the other hand, a normal gravure ink composition was used on one side of a biaxially stretched nylon 6 film having a thickness of 15 μm,
By a gravure printing method, a predetermined print pattern composed of characters, figures, symbols, pictures, etc. was printed to form a print pattern layer. Next, a two-component curable polyurethane-based laminating adhesive was used on the entire surface including the printed pattern layer formed above, and this was applied to a film thickness of 4.0 g / m 2 by a gravure roll coating method. ² (dry state) to form a laminating adhesive layer. Next, the barrier film produced in the above (1) is superimposed on the surface of the laminating adhesive layer formed above with the surface of the biaxially stretched polyethylene terephthalate film facing the substrate. And both were dry-laminated. Next, a primer agent layer was formed on the plasma-treated surface of the vapor-deposited aluminum oxide film of the barrier film dried as described above in the same manner as in Example 4 above.
Laminate is applied to the entire surface including the primer agent layer formed above.
An adhesive layer was formed. Next, a linear low-density polyethylene film having a thickness of 50 μm is overlaid on the laminating adhesive layer surface formed above with the corona-treated surface facing the same, and then both are dry-laminated. Thus, a lid material for a container for filling sterile cooked rice according to the present invention was produced. (3). Hereinafter, the aseptic-packaged cooked rice according to the present invention was manufactured in the same manner as in Example 1 above, using the lid material for the aseptic cooked rice-filled container manufactured above. The packaged product consisting of the sterile packaged rice cooked above is
It was excellent in barrier properties against oxygen gas, water vapor, etc., excellent in laminate strength, etc., withstanding distribution in the market, and excellent in storage and preservation. .

EXPERIMENTAL EXAMPLE The oxygen permeability, water vapor permeability and puncture resistance of the lid material for the aseptic rice-filled container produced in Examples 1 to 5 were measured. (1). Measurement of Oxygen Permeability This is a condition of 23 ° C. and 90% RH in the United States.
The measurement was carried out using a measuring instrument (model name, OXTRAN) manufactured by MOCON. (2). Measurement of water vapor transmission rate This is a condition of temperature of 40 ° C and humidity of 90% RH in the United States,
The measurement was carried out using a measuring instrument (model name, PERMATRAN) manufactured by MOCON. (3). Measurement of puncture resistance This was obtained by measuring the piercing strength of the lid material at a compression speed of 50 mm / min with a needle tip having a radius of 0.5 mm using a tensile tester. The above measurement results are shown in Table 1 below.

[0050] In Table 1 above, the unit of oxygen permeability is [cc / m
² / day · 23 ° C. · 90% RH] and the unit of water vapor permeability is [g / m ² / day · 40 ° C. · 10
0% RH], and the unit of puncture resistance is [gf].
It is.

As is clear from the measurement results shown in Table 1 above, the lid material for the container for filling sterile cooked rice according to the present invention has excellent oxygen barrier properties and water vapor barrier properties, and also has a high puncture resistance. It was excellent and could sufficiently withstand use as a lid material.

[0052]

As apparent from the above description, the present invention relates to a barrier film having a structure in which an inorganic oxide deposition film such as silicon oxide or aluminum oxide is provided on one surface of a base film. Focusing on further using the barrier film in the middle, first, a base film, the above barrier film, and a heat-sealing resin layer are sequentially laminated to form a sterile cooked rice-filled container. The lid material was manufactured, and the lid material was used, and this was cooked in a tray-shaped packaging container made of, for example, a polypropylene-based resin formed by using a polypropylene-based resin. After filling the rice, heat seal on the flange at the opening of the packaging container.
To produce aseptically packed cooked rice by tightly adhering and sealing with rice, etc., having strength, etc., and also having heat resistance, moisture resistance, heat sealability, pinhole resistance, piercing resistance, It has excellent transparency, etc., and also has excellent barrier properties to prevent the permeation of oxygen gas, water vapor, etc., has the suitability for filling and packaging its contents, and the suitability for storage, and is harmful when incinerated and disposed of after use. It is possible to produce a lid material for aseptic cooked rice-filled containers, which is extremely excellent in disposal suitability, environmental suitability, etc., and aseptic packaged cooked rice using the same, without generating substances and the like.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view schematically showing a layer configuration of an example of a lid material for a sterile cooked rice filling container according to the present invention.

FIG. 2 is a schematic cross-sectional view schematically showing a layer configuration of an example of a lid material for a container for filling sterile cooked rice according to the present invention.

FIG. 3 is a schematic cross-sectional view schematically showing a layer configuration of an example of a lid material for a sterile cooked rice filling container according to the present invention.

FIG. 4 is a schematic perspective view showing an example of the configuration of a packaging container used for aseptically packaged cooked rice according to the present invention.

FIG. 5 is a diagram illustrating a packaging container used for the aseptic packaged rice according to the present invention shown in FIG. 3 filled with cooked rice, and a flange portion of an opening of the packaging container according to the present invention shown in FIG. It is a schematic sectional drawing which shows an example of the structure about the aseptic package rice cooked using the lid material for the filling containers, heat-sealing and sealingly packing and manufacturing this.

FIG. 6 is a schematic configuration diagram illustrating an example of a low-temperature plasma chemical vapor deposition apparatus.

FIG. 7 is a schematic configuration diagram illustrating an example of a take-up type vacuum evaporation apparatus.

[Explanation of symbols]

A lid material for aseptic rice filling container A ₁ lid material for aseptic rice filling container A ₂ lid material for aseptic rice filling container B tray-like packaging container C aseptic packaging rice 1 base film 2 inorganic oxide deposited film 3 Resin film 4 Heat-sealing resin layer 5 Print pattern layer 6 Laminate adhesive layer 6a Laminate adhesive layer 7 Primer agent layer 8 Melt extruded resin layer 11 Opening 12 Flange 13 Side wall 14 Bottom wall 15 Rice 16 Seal part

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65D 81/24 B65D 81/24 D 4K029 C23C 14/08 C23C 14/08 A 4K030 16/40 16/40 / / B29K 21:00 B29K 21:00 67:00 67:00 77:00 77:00 B29L 7:00 B29L 7:00 9:00 9:00 F term (reference) 3E067 AA05 AB01 BA10A BB11A BB12A BB14A BB15A BB16A BB18A BB25A BB26A CA04 CA05 CA06 CA11 CA17 CA24 EA06 EA35 EA36 EE34 EE35 3E084 AA05 AA14 AA24 AA25 AA26 AA37 AB10 BA01 BA08 BA09 CA03 CC03 CC08 FD13 GB08 3E086 AD23 BA04 BA13 BA15A08 BB21 A41 BB21 A41 BB21 A41 BB21 A41 BB21 A AK03C AK03D AK41A AK41D AK46A AK46D AK51G AT00A BA03 BA04 BA07 BA10A BA10C BA13 CB01 CC00 DA03 EH23 EH66B EJ38A EJ38D GB18 GB23 HB31B JC00 JD02 JD04 JJ03 JL00 JL1 2C JN01 4F210 AA03 AA11 AA24 AA29 AG01 AG03 AH57 QC05 QG01 QG15 QG18 4K029 AA11 AA25 BA43 BA44 BC00 BD00 CA02 FA05 GA01 4K030 AA06 AA09 AA14 AA16 BA42 BA44 CA07 CA12 DA02 DA09 FA03 GA14 LA01

Claims (14)

[Claims] 1. A lid material for a container for filling aseptic rice, wherein a base film, a resin film provided with an inorganic oxide vapor-deposited film, and a heat-sealing resin layer are sequentially laminated. 2. The method according to claim 1, wherein the base film and the resin film provided with the inorganic oxide vapor-deposited film are dry-laminated via a laminating adhesive layer. A lid material for the aseptic rice filling container to be described. 3. A resin film provided with an inorganic oxide vapor-deposited film and a heat-sealing resin layer are dry-laminated via a primer agent layer and a laminating adhesive layer. The lid material for a container for filling sterile cooked rice according to claim 1 or 2, characterized by the above-mentioned. 4. A method in which a resin film provided with an inorganic oxide vapor-deposited film and a heat-sealing resin layer are melt-extruded and laminated via a primer agent layer and a melt-extruded resin layer. The lid material for a container for filling sterile cooked rice according to claim 1 or 2, which is characterized by the above-mentioned. 5. The lid material for a container for filling sterile cooked rice according to claim 1, wherein a printed pattern layer is provided on one surface of the base film. 6. The base film is a biaxially stretched polyester resin film, a biaxially stretched polyamide resin film,
The lid material for a sterile cooked rice-filled container according to any one of claims 1 to 5, wherein the lid material is made of a biaxially stretched polyolefin resin fill. 7. The sterilized cooked rice according to claim 1, wherein the inorganic oxide vapor-deposited film comprises a chemical vapor-deposited or physical vapor-deposited inorganic oxide vapor-deposited film. Lid material for filling containers. 8. The lid material for a container for filling sterile cooked rice according to claim 1, wherein the deposited film of the inorganic oxide comprises a deposited film of silicon oxide formed by a chemical vapor deposition method. 9. The lid material for a container for filling sterile cooked rice according to claim 1, wherein the deposited film of the inorganic oxide is a deposited film of aluminum oxide formed by a physical vapor deposition method. 10. The method according to claim 1, wherein the resin film comprises a biaxially oriented polyester resin film, a biaxially oriented polyamide resin film, or a biaxially oriented polyolefin resin film. A lid material for the aseptic rice filling container to be described. 11. The method according to claim 1, wherein the primer agent layer comprises a coating layer of a resin composition containing a polyurethane resin as a main component of the vehicle.
4. A lid material for a container for filling sterile cooked rice described in 1. 12. The method according to claim 1, wherein the heat-sealing resin layer comprises a polyolefin-based resin layer.
The lid material for a container for filling sterile cooked rice described in any one of Items 11 to 11. 13. A sterile cooked rice-filled container lid comprising a base film, a resin film provided with an inorganic oxide vapor-deposited film, and a heat-sealing resin layer sequentially laminated. The surface of the heat-sealing resin layer is overlapped with the surface of the heat-sealing resin layer so as to face the surface of the flange portion of the opening of the packaging container filled with the cooked rice. Aseptic packaging cooked rice characterized by heat sealing the surface of the flange portion to form a seal portion and hermetically packaging. 14. The packaging container according to claim 13, wherein the packaging container is a polypropylene-based resin-made tray-shaped packaging container made of polypropylene resin. Aseptic packaged cooked rice.