JP2016055895A - Composite container and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite container which provides various functions and features to a container and has high gas barrier properties, and to provide a manufacturing method of the composite container.SOLUTION: A composite container 10A includes: a container body 10 made of a plastic material; and a plastic made member 40 which is provided adhering to the outer side of the container body 10. The container body 10 and the plastic made member 40 are blow-molded to be integrally expanded. A vapor-deposited film 21 is formed on an inner surface of the container body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a composite container and a method for manufacturing the same.

  Recently, plastic bottles for storing content liquids such as foods and drinks have become common, and such plastic bottles store content liquids.

  A plastic bottle containing such a content liquid is manufactured by inserting a preform into a mold and biaxially stretch-blow molding.

  By the way, in the conventional biaxial stretch blow molding method, for example, a preform including a single layer material such as PET or PP, a multilayer material, a blend material, or the like is used to form a container shape. However, in the conventional biaxial stretch blow molding method, the preform is generally simply formed into a container shape. For this reason, when various functions and characteristics (barrier property, heat retaining property, etc.) are given to the container, the means is limited, for example, by changing the material constituting the preform.

JP 2009-241526 A

  Conventionally, plastic bottles have a problem of high gas permeability such as oxygen gas, water vapor, and carbon dioxide gas. For example, blow molded plastic bottles made of polyester resin or polyolefin resin may cause gas in the atmosphere to enter the plastic bottle, or components in the contents may be released outside the container. . In this case, there is a problem that the quality of the contents is greatly affected, and the quality is altered, modified, or deteriorated.

  The present invention has been made in consideration of such points, and it is an object of the present invention to provide a composite container having a high gas barrier property and a method for producing the same while giving various functions and characteristics to the container. To do.

  The present invention provides a composite container comprising a container body made of a plastic material and a plastic member provided in close contact with the outside of the container body, wherein the container body and the plastic member are integrated by blow molding. The composite container is expanded and has a vapor deposition film formed on the inner surface of the container body.

  The present invention is the composite container, wherein the deposited film is a gas barrier thin film containing silicon oxide.

  The present invention is the composite container, wherein the deposited film has a thickness of 0.005 μm to 0.4 μm.

  The present invention is the composite container, wherein the vapor deposition film is a gas barrier thin film containing hard carbon.

  The present invention is the composite container, wherein the deposited film has a thickness of 0.05 μm to 5 μm.

  The present invention further includes an inner label member provided in close contact so as to surround the outer side of the preform, and the plastic member is provided in close contact with the outer side of the inner label member. It is a composite container.

  The present invention relates to a method for manufacturing a composite container, a step of preparing a preform made of a plastic material, a step of providing a plastic member outside the preform, and a blow to the preform and the plastic member. A composite container having a container body corresponding to the preform and a plastic member provided in close contact with the outside of the container body by forming and inflating the preform and the plastic member together And a process of forming a vapor deposition film on the inner surface of the container body.

  The present invention is the method of manufacturing a composite container, wherein the vapor deposition film is a gas barrier thin film containing silicon oxide.

  This invention is a manufacturing method of the composite container characterized by the thickness of the said vapor deposition film being 0.005 micrometer-0.4 micrometer.

  The present invention is the method for producing a composite container, wherein the deposited film is a gas barrier thin film containing hard carbon.

  This invention is a manufacturing method of the composite container characterized by the thickness of the said vapor deposition film being 0.05 micrometer-5 micrometers.

  The present invention further includes a step of providing an inner label member so as to surround the outer side of the preform, and the plastic member is provided on the outer side of the inner label member. .

  According to the present invention, since the vapor deposition film is formed on the inner surface of the container body, the vapor deposition film prevents gas such as oxygen gas, water vapor, carbon dioxide gas from entering the container body, and the quality of the contents Deterioration can be prevented.

FIG. 1 is a partial vertical sectional view showing a composite container according to a first embodiment of the present invention. FIG. 2 is a horizontal sectional view showing the composite container according to the first embodiment of the present invention (sectional view taken along the line II-II in FIG. 1). FIG. 3 is a partial vertical sectional view showing the composite preform according to the first embodiment of the present invention. 4A to 4D are perspective views showing various plastic members. FIGS. 5A to 5F are schematic views showing a method of manufacturing the composite container according to the first embodiment of the present invention. FIG. 6 is a schematic sectional view showing a high-frequency plasma CVD apparatus. FIGS. 7A to 7F are schematic views illustrating a method for manufacturing a composite container according to a modification of the first embodiment of the present invention. FIGS. 8A to 8G are schematic views illustrating a method for manufacturing a composite container according to a modification of the first embodiment of the present invention. FIG. 9 is a partial vertical sectional view showing a modification of the composite container according to the first embodiment of the present invention. FIG. 10 is a partial vertical sectional view showing a modification of the composite preform according to the first embodiment of the present invention. FIG. 11 is a partial vertical sectional view showing a composite container according to a second embodiment of the present invention. FIG. 12 is a horizontal sectional view (cross-sectional view taken along line XII-XII in FIG. 11) showing a composite container according to the second embodiment of the present invention. FIG. 13 is a partial vertical sectional view showing a composite preform according to the second embodiment of the present invention. FIGS. 14A to 14F are schematic views showing a method for manufacturing a composite container according to the second embodiment of the present invention. FIGS. 15A to 15F are schematic views showing a method for manufacturing a composite container according to a modification of the second embodiment of the present invention. 16 (a) to 16 (g) are schematic views showing a method for manufacturing a composite container according to a modification of the second embodiment of the present invention. FIG. 17 is a partial vertical sectional view showing a modified example of the composite container according to the second embodiment of the present invention. FIG. 18 is a partial vertical sectional view showing a modification of the composite preform according to the second embodiment of the present invention.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1 to 10 are views showing a first embodiment of the present invention.

  First, an outline of a composite container produced by the composite container manufacturing method (blow molding method) according to the present embodiment will be described with reference to FIGS. 1 and 2. In the present specification, “upper” and “lower” refer to the upper side and the lower side of the composite container 10A in an upright state (FIG. 1), respectively.

  A composite container 10A shown in FIGS. 1 and 2 is biaxially stretched with respect to a composite preform 70 (see FIG. 3) including a preform 10a and a plastic member 40a using a blow molding die 50, as will be described later. By performing blow molding, the preform 10a of the composite preform 70 and the plastic member 40a are integrally expanded.

  Such a composite container 10 </ b> A includes a container body 10 made of a plastic material located inside and a plastic member 40 provided in close contact with the outside of the container body 10.

  Among these, the container body 10 includes a mouth portion 11, a neck portion 13 provided below the mouth portion 11, a shoulder portion 12 provided below the neck portion 13, a trunk portion 20 provided below the shoulder portion 12, And a bottom portion 30 provided below the portion 20.

  On the other hand, the plastic member 40 is in close contact with the outer surface of the container main body 10 in a thinly extended state, and is attached to the container main body 10 without being easily moved or rotated.

  Next, the container body 10 will be described in detail. As described above, the container body 10 includes the mouth portion 11, the neck portion 13, the shoulder portion 12, the trunk portion 20, and the bottom portion 30.

  Of these, the mouth portion 11 includes a screw portion 14 screwed into a cap (not shown) and a flange portion 17 provided below the screw portion 14. The shape of the mouth portion 11 may be a conventionally known shape.

  The neck portion 13 is located between the flange portion 17 and the shoulder portion 12 and has a substantially cylindrical shape having a substantially uniform diameter. The shoulder 12 is located between the neck 13 and the trunk 20 and has a shape whose diameter gradually increases from the neck 13 toward the trunk 20.

  Furthermore, the trunk | drum 20 has a cylindrical shape with a substantially uniform diameter as a whole. However, the present invention is not limited to this, and the body portion 20 may have a polygonal cylindrical shape such as a rectangular cylindrical shape or an octagonal cylindrical shape. Or the trunk | drum 20 may have a cylinder shape with a horizontal cross section which is not uniform toward upper direction from the downward direction. Moreover, in this Embodiment, although the unevenness | corrugation is not formed in the trunk | drum 20, and has a substantially flat surface, it is not restricted to this. For example, unevenness such as a panel or a groove may be formed on the body portion 20.

  On the other hand, the bottom portion 30 has a concave portion 31 located in the center and a grounding portion 32 provided around the concave portion 31. The shape of the bottom 30 is not particularly limited, and may have a conventionally known bottom shape (for example, a petaloid bottom shape or a round bottom shape).

  Moreover, although the thickness of the container main body 10 in the trunk | drum 20 is not limited to this, For example, it can be made thin to about 50 micrometers-250 micrometers. Further, the weight of the container body 10 is not limited to this, but can be 10 g to 20 g. Thus, by reducing the thickness of the container main body 10, the weight of the container main body 10 can be reduced.

  Such a container main body 10 can be manufactured by biaxially stretching blow-molding a preform 10a (described later) manufactured by injection molding a synthetic resin material. As the material of the preform 10a, that is, the container body 10, a thermoplastic resin, particularly PE (polyethylene), PP (polypropylene), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), or PC (polycarbonate) may be used. preferable. The container body 10 may be colored in colors such as red, blue, yellow, green, brown, black, and white, but is preferably colorless and transparent in consideration of ease of recycling. Moreover, you may blend and use the various resin mentioned above.

  The container body 10 can also be formed as a multilayer molded bottle having two or more layers. That is, by extrusion molding or injection molding, for example, the intermediate layer has gas barrier properties and light shielding properties such as MXD6, MXD6 + fatty acid salt, PGA (polyglycolic acid), EVOH (ethylene vinyl alcohol copolymer) or PEN (polyethylene naphthalate). You may form as a multilayer bottle which has gas barrier property and light-shielding property by extrusion-molding preform 10a which consists of three or more layers as resin which has (intermediate layer), and carrying out blow molding. As the intermediate layer, a resin obtained by blending the above-described various resins may be used.

  Further, by mixing an inert gas (nitrogen gas, argon gas) with the thermoplastic resin melt, a foam preform having a foam cell diameter of 0.5 to 100 μm is formed, and this foam preform is blow-molded. Thus, the container body 10 may be manufactured. Since such a container main body 10 contains the foam cell, the light shielding property of the container main body 10 whole can be improved.

  Such a container main body 10 may consist of a bottle with a full capacity of 100 ml to 2000 ml, for example. Alternatively, the container main body 10 may be a large bottle having a full capacity of, for example, 10L to 60L.

  In the present embodiment, a vapor deposition film 21 is formed on the inner surface of the container body 10. In this case, the vapor deposition film 21 is formed over the entire inner surface of the container body 10 with a substantially uniform thickness.

The vapor deposition film 21 may be, for example, a continuous gas barrier thin film containing silicon oxide represented by the general formula SiO _x (where X represents a number from 0 to 2). In this case, the deposited film 21, transparent, from the viewpoint of gas barrier properties, the general formula SiO _X (where, X is a number from 1.3 to 1.9) as a main component silicon oxide represented by A thin film is preferred. The vapor deposition film 21 may be composed of a vapor deposition film containing at least silicon atoms, oxygen atoms, and carbon atoms by chemical bonding. More specifically, the vapor deposition film 21 is mainly composed of silicon oxide, and at least one kind of carbon, hydrogen, silicon or oxygen, or a compound composed of two or more elements thereof is formed by a chemical bond or the like. It may consist of a continuous thin film included.

The vapor deposition film 21 is, for example, a compound having a C—H bond, a compound having a Si—H bond, or an organic silicon compound as a raw material when the carbon unit is in the form of graphite, diamond, fullerene, or the like. And their derivatives may be contained by chemical bonds or the like. Specific examples include hydrocarbons having a CH ₃ site, hydrosilica such as SiH ₃ silyl and SiH ₂ silylene, and hydroxyl derivatives such as SiH ₂ OH silanol.

  Further, the film thickness of the vapor deposition film 21 is desirably about 0.005 μm to 0.4 μm, and specifically, the film thickness is desirably about 0.01 to 0.1 μm. . By setting the thickness of the vapor deposition film 21 to 0.1 μm, and further to 0.4 μm or less, it is possible to prevent a problem that a crack or the like easily occurs in the vapor deposition film 21. On the other hand, by setting the thickness of the vapor deposition film 21 to 0.01 μm, further 0.005 μm or more, the gas barrier effect can be surely exhibited. In FIG. 1 and FIG. 2, the vapor deposition film 21 is exaggerated in the thickness direction.

  Thus, by providing the vapor deposition film 21 which is a gas barrier thin film containing silicon oxide on the inner surface of the container main body 10, the composite container 10 </ b> A having excellent gas barrier properties for preventing permeation of oxygen gas, water vapor, carbon dioxide gas and the like can be obtained. Can be provided.

Alternatively, the vapor deposition film 21 may be a hard carbon film made of, for example, a DLC (Diamond Like Carbon) film. A hard carbon film made of a DLC film is a hard carbon film called an i-carbon film or a hydrogenated amorphous carbon film (aC: H), which is an amorphous carbon film mainly composed of SP ³ bonds. . The film thickness of the DLC film is 0.05 to 5 μm in order to achieve both the effect of suppressing the adsorption of low molecular organic compounds and the effect of improving the gas barrier property, and the adhesion, durability, transparency and the like with the plastic. It is preferable to do so.

  Thus, by providing the vapor deposition film 21 which is a hard carbon film made of, for example, a DLC film on the inner surface of the container body 10, the composite container 10A has a remarkably high permeability of low-molecular inorganic gases such as oxygen and carbon dioxide. Not only can it be reduced, but also the sorption of various odorous low molecular weight organic compounds can be suppressed. Further, by forming the vapor deposition film 21 that is such a hard carbon film, the transparency of the container body 10 is not impaired.

  Next, the plastic member 40 will be described. As will be described later, the plastic member 40 (40a) is provided so as to surround the outside of the preform 10a, and is obtained by being in close contact with the outside of the preform 10a and then being biaxially stretch blow-molded together with the preform 10a. It is a thing.

  The plastic member 40 is attached to the outer surface of the container body 10 without being bonded, and is in close contact with the container body 10 so as not to move or rotate. The plastic member 40 is thinly extended on the outer surface of the container body 10 to cover the container body 10. As shown in FIG. 2, the plastic member 40 is provided over the entire circumferential direction so as to surround the container body 10, and has a substantially circular horizontal cross section.

  In this case, the plastic member 40 is provided so as to cover the shoulder portion 12, the trunk portion 20, and the bottom portion 30 of the container body 10 except for the mouth portion 11 and the neck portion 13. Thereby, desired functions and characteristics can be imparted to the shoulder portion 12, the trunk portion 20, and the bottom portion 30 of the container body 10.

  The plastic member 40 may be provided in the entire region or a partial region other than the mouth portion 11 of the container body 10. For example, the plastic member 40 may be provided so as to cover the neck portion 13, the shoulder portion 12, the trunk portion 20, and the bottom portion 30 of the container body 10 except for the mouth portion 11. Further, the number of plastic members 40 is not limited to one, and a plurality of plastic members 40 may be provided. For example, you may provide the two plastic members 40 in the outer surface of the shoulder part 12, and the outer surface of the bottom part 30, respectively.

  Such a plastic member 40 may have no contracting action on the preform 10a, or may have a contracting action.

  The thickness of the plastic member 40 is not limited to this, but can be set to, for example, about 5 μm to 500 μm in a state of being attached to the container body 10.

  Next, the structure of the composite preform according to this embodiment will be described with reference to FIG.

  As shown in FIG. 3, the composite preform 70 includes a preform 10a made of a plastic material, and a bottomed cylindrical plastic member 40a provided outside the preform 10a.

  The preform 10a includes a mouth portion 11a, a body portion 20a connected to the mouth portion 11a, and a bottom portion 30a connected to the body portion 20a. Of these, the mouth portion 11 a corresponds to the mouth portion 11 of the container body 10 described above, and has substantially the same shape as the mouth portion 11. Moreover, the trunk | drum 20a respond | corresponds to the neck part 13, the shoulder part 12, and the trunk | drum 20 of the container main body 10 mentioned above, and has a substantially cylindrical shape. The bottom 30a corresponds to the bottom 30 of the container body 10 described above, and has a substantially hemispherical shape.

  The plastic member 40a is attached to the outer surface of the preform 10a without being bonded, and is in close contact with the preform 10a so as not to move or rotate, or in close contact with the preform 10a so as not to fall by its own weight. . The plastic member 40a is provided over the entire circumferential direction so as to surround the preform 10a, and has a circular horizontal cross section.

  In this case, the plastic member 40a is provided so as to cover the entire region of the body portion 20a excluding the portion 13a corresponding to the neck portion 13 of the container body 10 and the entire region of the bottom portion 30a.

  The plastic member 40a may be provided in the entire region or a partial region other than the mouth portion 11a. For example, the plastic member 40a may be provided so as to cover the neck portion 13a, the trunk portion 20a, and the bottom portion 30a except for the mouth portion 11a. Furthermore, the number of plastic members 40a is not limited to one, and a plurality of plastic members 40a may be provided. For example, two plastic members 40a may be provided at two locations outside the trunk portion 20a.

  Such a plastic member 40a may be one that does not have a contracting action on the preform 10a or may have a contracting action.

  In the former case, as the plastic member 40a, for example, a blow tube produced by blow molding, a sheet molded tube produced by sheet molding, an extruded tube produced by extrusion molding, an inflation molded tube produced by inflation molding, etc. However, the present invention is not limited to this, and molding methods other than those described above may be used.

  In the latter case, that is, when the plastic member (outer contraction member) 40a has an action of contracting, the plastic member (outer contraction member) 40a is, for example, when an external action (for example, heat) is applied. What shrinks | contracts with respect to the reform 10a (for example, heat shrink) may be used. Alternatively, the plastic member (outer contraction member) 40a itself may be contractible or elastic and can contract without applying an external action.

  Examples of the plastic member 40a include polyethylene, polypropylene, polyethylene terephthalate, polyethylene naphthalate, poly-4-methylpentene-1, polystyrene, AS resin, ABS tree, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, Polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral, diallyl phthalate resin, fluororesin, polymethyl methacrylate, polyacrylic acid, polymethyl acrylate, polyacrylonitrile, polyacrylamide, polybutadiene, polybutene-1, polyisoprene, polychloroprene, Ethylene propylene rubber, butyl rubber, nitrile rubber, acrylic rubber, silicone rubber, fluoro rubber, nylon 6, nylon 6,6, nylon MXD6, aromatic poly , Polycarbonate, ethylene polyterephthalate, polybutylene terephthalate, poly ethylene naphthalate, U polymer, liquid crystal polymer, modified polyphenylene ether, polyether ketone, polyether ether ketone, unsaturated polyester, alkyd resin, polyimide, polysulfone, polyphenylene Examples thereof include sulfide, polyethersulfone, silicone resin, polyurethane, phenol resin, urea resin, polyethylene oxide, polypropylene oxide, polyacetal, and epoxy resin. Among these, it is preferable to use thermoplastic inelastic resins such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN). Moreover, those blend materials, multilayer structures, and partial multilayer structures may be used. Furthermore, various additives other than the main component resin may be added to the material of the plastic member 40a as long as the characteristics are not impaired. Examples of additives include plasticizers, UV stabilizers, anti-coloring agents, matting agents, deodorants, flame retardants, weathering agents, antistatic agents, yarn friction reducing agents, slip agents, mold release agents, An oxidizing agent, an ion exchange agent, a coloring pigment, and the like can be added. Also, by mixing an inert gas (nitrogen gas, argon gas) with a melt of a thermoplastic resin, a foam member having a foam cell diameter of 0.5 to 100 μm is used, and this foam preform is molded. , The light shielding property can be improved.

  The plastic member 40a may be made of the same material as the container body 10 (preform 10a). In this case, in the composite container 10A, for example, the plastic member 40 can be intensively arranged at a portion where the strength is to be increased, and the strength of the portion can be selectively increased. For example, plastic members 40 may be provided around the shoulder 12 and the bottom 30 of the container body 10 to increase the strength of this portion. Examples of such materials include thermoplastic resins, particularly PE (polyethylene), PP (polypropylene), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), and PC (polycarbonate).

  The plastic member 40a may be made of a material having a gas barrier property such as an oxygen barrier property or a water vapor barrier property. In this case, the gas barrier property of the composite container 10A can be enhanced without using a multilayer preform or a preform containing a blend material as the preform 10a, and the content liquid can be prevented from being deteriorated by oxygen or water vapor. For example, a plastic member 40 may be provided in the entire region of the shoulder portion 12, the neck portion 13, the trunk portion 20, and the bottom portion 30 of the container body 10, and the gas barrier property of this portion may be improved. Examples of such materials include PE (polyethylene), PP (polypropylene), MXD-6 (nylon), PGA (polyglycolic acid), EVOH (ethylene vinyl alcohol copolymer), and oxygen such as fatty acid salts in these materials. It is also possible to mix an absorbent material.

  The plastic member 40a may be made of a material having a light barrier property such as ultraviolet rays. In this case, the light barrier property of the composite container 10A can be improved and the content liquid can be prevented from being deteriorated by ultraviolet rays or the like without using a multilayer preform or a preform containing a blend material as the preform 10a. For example, a plastic member 40a may be provided in the entire region of the shoulder portion 12, the neck portion 13, the trunk portion 20, and the bottom portion 30 of the container body 10 to enhance the ultraviolet barrier property of this portion. As such a material, a blend material or a material obtained by adding a light-shielding resin to PET, PE, or PP can be considered. Moreover, you may use the foaming member with the foam cell diameter of 0.5-100 micrometers produced by mixing inert gas (nitrogen gas, argon gas) with the melt of a thermoplastic resin.

  Moreover, the plastic member 40a may be made of a material (a material having a low thermal conductivity) having a higher heat retaining property or a lower heat retaining property than a plastic material constituting the container body 10 (preform 10a). In this case, it is possible to make it difficult for the temperature of the content liquid to be transmitted to the surface of the composite container 10A without increasing the thickness of the container body 10 itself. Thereby, the heat retaining property or cold retaining property of the composite container 10A is enhanced. For example, the plastic member 40 may be provided on the whole or a part of the body 20 in the container body 10 to enhance the heat retaining property or the cold retaining property of the body 20. Further, when the user grips the composite container 10A, it is prevented that the composite container 10A becomes difficult to hold due to being too hot or too cold. Examples of such materials include foamed polyurethane, polystyrene, PE (polyethylene), PP (polypropylene), phenol resin, polyvinyl chloride, urea resin, silicone, polyimide, melamine resin, and the like. Moreover, you may use the foaming member with the foam cell diameter of 0.5-100 micrometers produced by mixing inert gas (nitrogen gas, argon gas) with the melt of a thermoplastic resin.

  The plastic member 40a may be made of a material that is less slippery than the plastic material that constitutes the container body 10 (preform 10a). In this case, the user can easily hold the composite container 10 </ b> A without changing the material of the container body 10. For example, a plastic member 40 may be provided on all or part of the body 20 of the container body 10 so that the body 20 can be easily held.

  The plastic member 40a may be preliminarily printed with design or printing. In this case, the printing may be formed by designing or printing the plain plastic member 40a by a printing method such as an inkjet method or a gravure printing method. This printing may be performed on the plastic member 40a before being attached to the preform 10a, or may be performed in a state where the plastic member 40a is provided outside the preform 10a. The plastic member 40a may be colored in colors such as red, blue, yellow, green, brown, black, and white, and may be transparent or opaque.

  Next, the shape of the plastic member 40a will be described.

  As shown in FIGS. 3 and 4A, the plastic member 40a has a bottomed cylindrical shape as a whole, and includes a cylindrical body 41 and a bottom 42 connected to the body 41. May be. In this case, since the bottom part 42 of the plastic member 40a covers the bottom part 30a of the preform 10a, various functions and characteristics such as barrier properties are imparted to the bottom part 30 in addition to the trunk part 20 of the composite container 10A. Can do. Examples of such a plastic member 40a include the above-described blow tube and sheet molded tube.

  Further, as shown in FIGS. 10 (described later) and FIG. 4B, the plastic member 40a has a circular tube shape (bottomless cylindrical shape) as a whole, and has a cylindrical body 41. good. In this case, as the plastic member 40a, for example, the above-described blow tube, extruded tube, inflation molded tube, or sheet molded tube can be used.

  Moreover, as shown in FIG.4 (c) and FIG.4 (d), the plastic members 40a may be produced by forming a film in a cylinder shape and bonding the edge part together. In this case, as shown in FIG. 4 (c), the plastic member 40a may be configured in a tubular shape (bottomless cylindrical shape) having a body portion 41, and as shown in FIG. 4 (d), The bottom 42 may be bonded to form a bottomed cylinder.

  Next, a manufacturing method (blow molding method) of the composite container 10A according to the present embodiment will be described with reference to FIGS.

  First, a preform 10a made of a plastic material is prepared (see FIG. 5A). In this case, for example, the preform 10a may be manufactured by an injection molding method using an unillustrated injection molding machine. Moreover, you may use the preform generally used conventionally as the preform 10a.

  Next, the plastic member 40a is prepared. In this case, the plastic member 40 a has a bottomed cylindrical shape as a whole, and includes a cylindrical body portion 41 and a bottom portion 42 connected to the body portion 41.

  Next, by providing a plastic member 40a on the outside of the preform 10a, a composite preform 70 having the preform 10a and the plastic member 40a in close contact with the outside of the preform 10a is manufactured (FIG. 5 ( b)).

  In this case, a plastic member 40a having an inner diameter that is the same as or slightly smaller than the outer diameter of the preform 10a may be pressed into the preform 10a to be brought into close contact with the outer surface of the preform 10a. Alternatively, as will be described later, a heat-shrinkable plastic member 40a is provided on the outer surface of the preform 10a, and the plastic member 40a is thermally contracted by heating to 50 ° C. to 100 ° C. You may make it stick to.

  In this way, a series of steps for producing the composite preform 70 (FIGS. 5A to 5B) are performed by previously bringing the plastic member 40a into close contact with the outside of the preform 10a and producing the composite preform 70. )) And a series of steps (FIGS. 5 (c) to 5 (f)) for producing the composite container 10A by blow molding can be performed at different places (factories, etc.).

  Next, the composite preform 70 is heated by the heating device 51 (see FIG. 5C). At this time, the composite preform 70 is evenly heated in the circumferential direction by the heating device 51 while rotating with the mouth portion 11a facing downward. The heating temperature of the preform 10a and the plastic member 40a in this heating step may be, for example, 90 ° C. to 130 ° C.

  Subsequently, the composite preform 70 heated by the heating device 51 is sent to the blow molding die 50 (see FIG. 5D).

  The composite container 10 </ b> A is molded using this blow molding die 50. In this case, the blow mold 50 is composed of a pair of body molds 50a and 50b and a bottom mold 50c which are divided from each other (see FIG. 5D). In FIG. 5 (d), the pair of body molds 50a and 50b are open to each other, and the bottom mold 50c is raised upward. In this state, the composite preform 70 is inserted between the pair of body molds 50a and 50b.

  Next, as shown in FIG. 5E, after the bottom mold 50c is lowered, the pair of body molds 50a, 50b is closed, and sealed by the pair of body molds 50a, 50b and the bottom mold 50c. A blow mold 50 is formed. Next, air is press-fitted into the preform 10 a and biaxial stretch blow molding is performed on the composite preform 70.

  As a result, the container body 10 is obtained from the preform 10 a in the blow molding die 50. During this time, the body molds 50a and 50b are heated to 30 ° C. to 80 ° C., and the bottom mold 50c is cooled to 5 ° C. to 25 ° C. At this time, in the blow mold 50, the preform 10a of the composite preform 70 and the plastic member 40a are expanded as a unit. Thereby, the preform 10a and the plastic member 40a are integrally formed into a shape corresponding to the inner surface of the blow mold 50.

  In this manner, a composite container 10A including the container body 10 and the plastic member 40 provided on the outer surface of the container body 10 is obtained.

  Next, as shown in FIG. 5 (f), the pair of body molds 50 a and 50 b and the bottom mold 50 c are separated from each other, and the composite container 10 </ b> A is taken out from the blow molding mold 50.

  Subsequently, a vapor deposition film 21 is formed on the inner surface of the container body 10. In this case, for example, the vapor deposition film 21 is formed on the inner surface of the container body 10 using the high-frequency plasma CVD apparatus 100 shown in FIG. Hereinafter, a case where a gas barrier thin film containing silicon oxide is provided as the deposited film 21 will be described as an example.

  First, the configuration of the high-frequency plasma CVD apparatus 100 will be described with reference to FIG. The high frequency plasma CVD apparatus 100 includes a base 101 and an external electrode 103 supported on the base 101 via an insulating plate 102. The external electrode 103 may be composed of a plurality of members separable from each other so that the composite container 10A can be taken in and out. The external electrode 103 has a reaction chamber 104 that is a slightly larger space than the composite container 10A. An internal electrode 105 is disposed in the reaction chamber 104. The internal electrode 105 is made of a hollow body and has a plurality of source gas blowing holes 106. A source gas supply pipe 107 made of a conductive material is connected to the internal electrode 105. In addition, a vacuum source (not shown) is connected to the reaction chamber 104 through an exhaust pipe 108.

  A high frequency power source 110 is connected to the external electrode 103 via a matching unit 109. On the other hand, the internal electrode 105 is grounded via the source gas supply pipe 107. Around the external electrode 103, a plurality of magnets 111 for generating a magnetic field in the reaction chamber 104 are arranged.

The raw material gas supply pipe 107 provided continuously to the inner electrode 105, as shown by the arrow P _2, deposition monomer gas such as an organic silicon compound, oxygen gas, an inert gas, for deposition prepared using other A raw material gas composition gas is supplied. Further, when the deposition source gas composition is supplied to the internal electrode 105 through the source gas supply pipe 107, the deposition source gas composition is blown out from the source gas blowing hole 106 provided in the internal electrode 105.

In addition, the air in the reaction chamber 104 is exhausted by a vacuum source (vacuum pump) through an exhaust pipe 108 as indicated by an arrow P ₁ .

  Next, a method for forming the vapor deposition film 21 on the inner surface of the container body 10 using the high-frequency plasma CVD apparatus 100 shown in FIG. 6 will be described.

  First, the composite container 10 </ b> A is accommodated in the reaction chamber 104 of the external electrode 103. Next, a vacuum pump (not shown) connected to the exhaust pipe 108 evacuates the reaction chamber 104 to a pressure at which plasma can be generated, and the degree of vacuum is increased.

  Next, an inert gas such as argon (Ar) or helium (He) is supplied into the container body 10 from the source gas supply pipe 107 and blown out from the source gas blowing hole 106, and at the same time, the external electrode 103 and the internal electrode 105 A high frequency voltage is applied during As a result, a high-frequency glow discharge is generated in the reaction chamber 104 and a magnetic field is generated in the reaction chamber 104 by the magnet 111. The inert gas ejected from the source gas blowing hole 106 is turned into plasma in the reaction chamber 104 and collides with the inner surface of the container body 10 with acceleration, and fine irregularities are formed on the inner surface of the container body 10. At that time, by generating a magnetic field by the magnet 111 inside the reaction chamber 104, it becomes possible not only to generate high-quality high-quality inert gas plasma, but also to generate plasma on the inner surface of the container body 10. It is possible to collide the inert gas with acceleration and to form fine irregularities on the inner surface of the container body 10 efficiently.

  Next, the inside of the reaction chamber 104 is again evacuated to a pressure at which plasma can be generated by the vacuum pump connected to the exhaust pipe 108, and the degree of vacuum in the reaction chamber 104 is increased as described above.

  Next, an evaporation source gas composition prepared using an evaporation monomer gas such as an organosilicon compound, oxygen gas, an inert gas, or the like, through the source gas supply pipe 107 is appropriately placed in the reaction chamber 104. Supply at flow rate. Further, a high frequency voltage is applied between the external electrode 103 and the internal electrode 105 to generate a high frequency glow discharge in the reaction chamber 104, and a magnetic field is generated in the reaction chamber 104 by the magnet 111. At this time, the vapor deposition source gas composition supplied into the reaction chamber 104 by the high-frequency glow discharge is caused to undergo a gas phase reaction in the reaction chamber 104 and is a reaction mainly composed of plasma-generated inorganic oxide such as silicon oxide. A product is produced. This reaction product is deposited on the entire inner surface of the container body 10 with acceleration. At that time, by generating a magnetic field by the magnet 111 inside the reaction chamber 104, it becomes possible not only to generate a high-quality and high-quality plasma reaction product, but also to generate plasma on the inner surface of the container body 10. The deposited reaction product can be efficiently deposited on the inner surface of the container body 10 by causing the reaction product to collide with acceleration.

  After a sufficient time to form the vapor deposition film 21, the supply of the vapor deposition raw material gas composition to the reaction chamber 104 via the raw material gas supply pipe 107 is stopped, and then the atmosphere is supplied to the reaction chamber 104. Introduce. In this way, a composite container 10A (see FIGS. 1 and 2) in which the vapor deposition film 21 is formed on the entire inner surface of the container body 10 is obtained.

  In the above, a gas barrier thin film containing an inorganic oxide such as silicon oxide is formed on the inner surface of the container body 10. Instead, a hard carbon film made of a DLC film is formed on the entire inner surface of the container body 10 using, for example, a source gas composition containing acetylene as a source gas and argon as an inert gas. Also good.

Modified Example of Manufacturing Method of Composite Container Next, a modified example of the manufacturing method (blow molding method) of the composite container 10A according to the present embodiment will be described with reference to FIGS. 7 (a) to 7 (g) has a function in which a plastic member (outer contraction member) 40a contracts with respect to the preform 10a, and other configurations are shown in FIG. 5 (a). It is substantially the same as the form shown in (f). 7A to 7F, the same parts as those in FIGS. 5A to 5F are denoted by the same reference numerals, and detailed description thereof is omitted.

  First, a preform 10a made of a plastic material is prepared (see FIG. 7A).

  Next, a plastic member (outer contraction member) 40a is provided outside the preform 10a (see FIG. 7B). In this case, the plastic member (outer contraction member) 40 a has a bottomed cylindrical shape as a whole, and includes a cylindrical body 41 and a bottom 42 connected to the body 41. This plastic member (outer contraction member) 40a is mounted so as to cover the entire region of the body portion 20a except the portion corresponding to the neck portion 13 of the container body 10 and the entire region of the bottom portion 30a.

  Next, the preform 10a and the plastic member (outer contraction member) 40a are heated by the heating device 51 (see FIG. 7C). At this time, the preform 10a and the plastic member (outer contraction member) 40a are evenly heated in the circumferential direction by the heating device 51 while rotating with the mouth portion 11a facing downward. The heating temperature of the preform 10a and the plastic member (outer contraction member) 40a in this heating step may be, for example, 90 ° C. to 130 ° C.

  In this way, the plastic member (outer contraction member) 40a is heated, so that the plastic member (outer contraction member) 40a is thermally contracted and is in close contact with the outside of the preform 10a (see FIG. 7C). . When the plastic member (outer contraction member) 40a itself has contractibility, the plastic member at the time when the plastic member (outer contraction member) 40a is provided outside the preform 10a (see FIG. 7B). (Outer contraction member) 40a may be in close contact with the outside of the preform 10a.

  Subsequently, the preform 10a and the plastic member (outer contraction member) 40a heated by the heating device 51 are sent to the blow molding die 50 (see FIG. 7D). In this case, the heating for shrinking the plastic member (outer contraction member) 40a and the heating for blow-molding the preform 10a can be performed in the same process.

  The preform 10a and the plastic member (outer contraction member) 40a are molded by using this blow molding die 50, and are substantially the same as those in FIGS. 5 (a) to 5 (f) described above. A composite container 10A including a plastic member (outer contraction member) 40 provided on the outer surface of the container body 10 is obtained (see FIGS. 7D to 7F). Thereafter, similarly to the above, the vapor deposition film 21 is formed on the inner surface of the container body 10 by using, for example, the high-frequency plasma CVD apparatus 100 shown in FIG. In this way, a composite container 10A (see FIGS. 1 and 2) in which the vapor deposition film 21 is formed on the entire inner surface of the container body 10 is obtained.

  Next, with reference to FIGS. 8A to 8G, another modified example of the manufacturing method (blow molding method) of the composite container 10A according to the present embodiment will be described. The modified example shown in FIGS. 8A to 8G has an effect that the plastic member (outer contraction member) 40a contracts with respect to the preform 10a, and the preform 10a and the plastic member (outer contraction member) 40a. Is heated in two stages, and the other configuration is substantially the same as the configuration shown in FIGS. 8A to 8G, the same parts as those in FIGS. 5A to 5F are denoted by the same reference numerals, and detailed description thereof is omitted.

  First, a preform 10a made of a plastic material is prepared (see FIG. 8A).

  Next, a plastic member (outer contraction member) 40a is provided outside the preform 10a (see FIG. 8B).

  Next, the preform 10a and the plastic member (outer contraction member) 40a are heated by the first heating device 55 (see FIG. 8C). At this time, the heating temperature of the preform 10a and the plastic member (outer contraction member) 40a may be, for example, 50 ° C. to 100 ° C.

  By heating the plastic member (outer contraction member) 40a, the plastic member (outer contraction member) 40a is thermally contracted, and is in close contact with the outside of the preform 10a. As a result, a composite preform 70 having the preform 10a and a plastic member (outer contraction member) 40a in close contact with the outside of the preform 10a is obtained (see FIG. 8C).

  In this way, the composite preform 70 is manufactured by preliminarily bringing the plastic member (outer contraction member) 40a into heat contact with the outside of the preform 10a using the first heating device 55, thereby producing the composite preform 70. And a series of steps (FIGS. 8D to 8G) for producing the composite container 10A by blow molding at different locations (factory etc.) ) Can be implemented.

  Next, the composite preform 70 is heated by the second heating device 51 (see FIG. 8D). At this time, the composite preform 70 is evenly heated in the circumferential direction by the second heating device 51 while rotating with the mouth portion 11a facing downward. The heating temperature of the preform 10a and the plastic member (outer contraction member) 40a in this heating step may be, for example, 90 ° C. to 130 ° C.

  Subsequently, the composite preform 70 heated by the second heating device 51 is sent to the blow molding die 50 (see FIG. 8E).

  The composite preform 70 is molded using the blow mold 50 and is provided on the container body 10 and the outer surface of the container body 10 in substantially the same manner as in the above-described FIGS. A composite container 10 </ b> A including a plastic member (outer contraction member) 40 is obtained (see FIGS. 8E to 8G). Thereafter, similarly to the above, the vapor deposition film 21 is formed on the inner surface of the container body 10 by using, for example, the high-frequency plasma CVD apparatus 100 shown in FIG. In this way, a composite container 10A (see FIGS. 1 and 2) in which the vapor deposition film 21 is formed on the entire inner surface of the container body 10 is obtained.

  As described above, according to the present embodiment, the preform 10a and the plastic member 40a of the composite preform 70 are integrated by performing blow molding on the composite preform 70 in the blow molding die 50. As a result, a composite container 10A including the container body 10 and the plastic member 40 is manufactured. Thereby, preform 10a (container main part 10) and plastic member 40a (plastic member 40) can be constituted from another member. Therefore, various functions and characteristics can be freely imparted to the composite container 10A by appropriately selecting the type and shape of the plastic member 40.

  Further, according to the present embodiment, when the composite container 10A is manufactured, a general blow molding apparatus can be used as it is, so that it is necessary to prepare a new molding equipment for manufacturing the composite container 10A. Absent. Moreover, since the plastic member 40a is provided outside the preform 10a, it is not necessary to prepare a new molding facility for molding the preform 10a.

  Furthermore, according to the present embodiment, since the vapor deposition film 21 is formed on the inner surface of the container main body 10, the vapor deposition film 21 allows gases such as oxygen gas, water vapor, and carbon dioxide gas to enter the container main body 10 of the composite container 10 </ b> A. It is possible to prevent the content from deteriorating and to prevent the quality of the contents from deteriorating.

Modification of Composite Container and Composite Preform Next, a modification of the present embodiment will be described with reference to FIGS.

  The modification shown in FIGS. 9 and 10 does not have a body portion and a bottom portion as the plastic member 40a, but uses a cylindrical plastic member 40a.

  In the composite container 10 </ b> A shown in FIG. 9, the plastic member 40 extends from the shoulder 12 of the container body 10 to the lower part of the trunk 20, but does not reach the bottom 30. Further, in the composite preform 70 shown in FIG. 10, the plastic member 40a is in close contact so as to cover only the trunk portion 20a of the preform 10a, and more specifically, the neck portion 13 of the container body 10 in the trunk portion 20a. The region excluding the portion 13a corresponding to the portion and the portion corresponding to the lower portion of the body portion 20a is covered. A vapor deposition film 21 is formed over the entire inner surface of the container body 10.

  9 and 10, other configurations are substantially the same as those of the embodiment shown in FIGS. 1 to 8. In the modification shown in FIGS. 9 and 10, the same parts as those in the embodiment shown in FIGS. Further, the configuration and manufacturing method of the composite container 10A and the configuration and manufacturing method of the composite preform 70 are substantially the same as those in the embodiment shown in FIGS. 9 and 10, the plastic member 40 may have a function of contracting with respect to the preform 10a.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. 11 to 18 are views showing a second embodiment of the present invention. In FIG. 11 to FIG. 18, the same parts as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  First, the outline | summary of the composite container by this Embodiment is demonstrated with FIG. 11 and FIG.

  A composite container 10A shown in FIGS. 11 and 12 is formed into a composite preform 70 (see FIG. 13) including a preform 10a, an inner label member 60a, and a plastic member 40a by using a blow molding die 50, as will be described later. On the other hand, by performing biaxial stretch blow molding, the preform 10a, the inner label member 60a, and the plastic member 40a of the composite preform 70 are integrally expanded.

  Such a composite container 10 </ b> A is provided in close contact with the outer side of the inner label member 60 and the inner label member 60 provided in close contact with the outer side of the container main body 10. The plastic member 40 is provided. A vapor deposition film 21 is formed over the entire inner surface of the container body 10.

  Among these, the inner label member 60 is in close contact with the outer surface of the container body 10 in a thinly extended state, and is in close contact with the container body 10 so as not to easily move or rotate.

  The plastic member 40 is in close contact with the outer surface of the container body 10 and the outer surface of the inner label member 60 in a thinly extended state, and is in close contact with the container body 10 so as not to easily move or rotate. Yes.

  It is conceivable that at least a part of the plastic member 40 is translucent or transparent. In this case, the inner label member 60 can be visually recognized from the outside through the translucent or transparent portion. The plastic member 40 may be entirely translucent or transparent, or may have an opaque portion and a translucent or transparent portion (for example, a window portion).

  Next, the inner label member 60 will be described. As will be described later, the inner label member 60 (60a) is provided so as to surround the outer side of the preform 10a, and is obtained by performing biaxial stretch blow molding integrally with the preform 10a and the plastic member 40a. Is.

  The inner label member 60 is attached to the outer surface of the container body 10 without being bonded, and is in close contact with the container body 10 so as not to move or rotate. The inner label member 60 is thinly stretched on the outer surface of the container body 10 to cover the container body 10. As shown in FIG. 12, the inner label member 60 is provided over the entire circumferential direction so as to surround the container body 10, and has a substantially circular horizontal cross section.

  In this case, the inner label member 60 is provided so as to cover the shoulder portion 12, the trunk portion 20, and the bottom portion 30 of the container body 10 except for the mouth portion 11 and the neck portion 13. Thereby, desired characters, images, and the like can be imparted to the shoulder portion 12, the body portion 20, and the bottom portion 30 of the container main body 10, and the composite container 10A can be decorated and information can be displayed.

  The inner label member 60 may be provided in the entire region or a partial region other than the mouth portion 11 of the container body 10. For example, the inner label member 60 may be provided so as to cover the neck portion 13, the shoulder portion 12, the trunk portion 20, and the bottom portion 30 of the container body 10 except the mouth portion 11. Furthermore, the inner label member 60 is not limited to one, and a plurality of inner label members 60 may be provided. The inner label member 60 may be provided in the same region as the plastic member 40, or may be provided in a region narrower than the plastic member 40. In the latter case, the inner label member 60 is preferably completely covered by the plastic member 40.

  Further, the thickness of the inner label member 60 is not limited to this, but can be set to, for example, about 1 μm to 100 μm in a state of being attached to the container body 10.

  In addition, since the configurations of the container body 10 and the plastic member 40 are substantially the same as those in the first embodiment described above, detailed description thereof is omitted here.

  Next, the structure of the composite preform according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 13, the composite preform 70 includes a preform 10a made of a plastic material, a bottomed cylindrical inner label member 60a provided in close contact with the outer side of the preform 10a, and an inner label member 60a. And a bottomed cylindrical plastic member 40a provided in close contact with the outside.

  The inner label member 60a is in close contact with the outer surface of the preform 10a and is in close contact with the preform 10a so that it does not easily move or rotate, or is in close contact with the preform 10a so that it does not fall off due to its own weight. The inner label member 60a is provided over the entire circumferential direction so as to surround the preform 10a, and has a substantially circular horizontal cross section.

  The inner label member 60a may be previously designed or printed. For example, in addition to the design and product name, character information such as the name of the content liquid, the manufacturer, and the name of the raw material may be described. In this case, it is possible to display images and characters on the composite container 10A without separately providing a label or the like to the container body 10 after blow molding. For example, the inner label member 60a may be provided on all or part of the trunk portion 20a of the preform 10a, and images and characters may be displayed on the trunk portion 20 of the container body 10 after molding. This eliminates the need for a labeling process using a labeler after the container is tightly sealed, so that the manufacturing cost can be suppressed and the yield can be prevented from decreasing.

  As such an inner label member 60a, an unstretched film such as polyester resin, polyamide resin, polyaramid resin, polypropylene resin, polycarbonate resin, polyacetal resin, or fluorine resin can be used. The inner label member 60a may be made of the same material as the container body 10 (preform 10a) and / or the plastic member 40a, or may be made of a different material.

  On the other hand, the plastic member 40a is attached to the outer surface of the inner label member 60a without being bonded, and is in close contact with the preform 10a so that it does not move or rotate, or close enough not to fall by its own weight. Has been.

  The inner label member 60a and the plastic member 40a may be provided in the entire region or a partial region other than the mouth portion 11a. For example, the inner label member 60a and the plastic member 40a may be provided so as to cover the entire body portion 20a and the bottom portion 30a except for the mouth portion 11a. Furthermore, the inner label member 60a and the plastic member 40a are not limited to one, and a plurality of inner label members 60a and plastic members 40a may be provided. For example, the two inner label members 60a and the plastic member 40a may be provided at two locations on the outer side of the body portion 20a.

  In addition, since the configurations of the preform 10a and the plastic member 40a are substantially the same as those in the first embodiment described above, detailed description thereof is omitted here.

  Next, a manufacturing method (blow molding method) of the composite container 10A according to the present embodiment will be described with reference to FIGS.

  First, a preform 10a made of a plastic material is prepared (see FIG. 14A).

  Next, an inner label member 60a is provided outside the preform 10a, and a plastic member 40a is provided outside the inner label member 60a. Thus, a composite preform 70 having the preform 10a, the inner label member 60a in close contact with the outer side of the preform 10a, and the plastic member 40a in close contact with the outer side of the inner label member 60a is produced (FIG. 14). (See (b)). In this case, the inner label member 60 a has a bottomed cylindrical shape as a whole, and includes a cylindrical body portion 61 and a bottom portion 62 connected to the body portion 61.

  At this time, even if the inner label member 60a and the plastic member 40a having the same or slightly smaller inner diameter as the outer diameter of the preform 10a are pressed into the preform 10a, the inner label member 60a may be brought into close contact with the outer surface of the preform 10a. good. Alternatively, the inner label member 60a and the plastic member 40a having heat shrinkability are provided on the outer surface of the preform 10a, and the inner label member 60a and the plastic member 40a are thermally contracted by heating to 50 ° C. to 100 ° C. You may make it closely_contact | adhere to the outer surface of the preform 10a.

  Alternatively, a plastic member 40a may be provided around the inner label member 60a in advance, and the inner label member 60a and the plastic member 40a may be integrally attached to the outside of the preform 10a. Alternatively, the inner label member 60a may be provided outside the preform 10a, and then the plastic member 40a may be provided outside the inner label member 60a.

  In this way, a series of steps for producing the composite preform 70 by previously bringing the plastic member 40a into close contact with the outside of the preform 10a and the inner label member 60a and producing the composite preform 70 (FIG. 14 ( a) to (b)) and a series of steps (FIGS. 14 (d) to (f)) for producing the composite container 10A by blow molding can be carried out at different places (factories, etc.).

  Next, the composite preform 70 is heated by the heating device 51 (see FIG. 14C).

  Subsequently, the composite preform 70 heated by the heating device 51 is sent to the blow mold 50. The composite container 10A is molded using this blow molding die 50, and is substantially the same as in the case of the first embodiment described above, and the container body 10 and the inner label member provided on the outer surface of the container body 10. 60 and the composite container 10A provided with the plastic member 40 provided outside the inner label member 60 (see FIGS. 14D to 14F).

  Thereafter, similarly to the first embodiment, the vapor deposition film 21 is formed on the inner surface of the container body 10 using, for example, the high-frequency plasma CVD apparatus 100 shown in FIG. In this way, a composite container 10A (see FIGS. 11 and 12) in which the vapor deposition film 21 is formed on the entire inner surface of the container body 10 is obtained.

  In addition, the manufacturing method (blow molding method) of the composite container 10A according to the present embodiment is substantially the same as in the case of the above-described first embodiment, and thus detailed description thereof is omitted here.

Variations of Blow Molding Method FIGS. 15A to 15F and FIGS. 16A to 16G are diagrams showing variations of the method for manufacturing the composite container 10A (blow molding method) according to the present embodiment. It is. 15 (a) to 15 (f) and FIGS. 16 (a) to 16 (g), the same parts as those in FIGS.

  In the modification shown in FIGS. 15A to 15F, an inner label member 60 is provided outside the preform 10a, and a plastic member (outer contraction member) 40a is provided outside the inner label member 60. Other configurations are substantially the same as those shown in FIGS. 7 (a) to 7 (f).

  In the modification shown in FIGS. 16A to 16G, an inner label member 60 is provided outside the preform 10a, and a plastic member (outer contraction member) 40a is provided outside the inner label member 60. The other configurations are substantially the same as those shown in FIGS. 8 (a) to 8 (g).

  15 (a) to 15 (f) and FIGS. 16 (a) to (g), as in the first embodiment, for example, the high frequency plasma CVD apparatus 100 shown in FIG. A vapor deposition film 21 is formed on the inner surface. Thereby, the composite container 10A (see FIGS. 11 and 12) in which the vapor deposition film 21 is formed on the entire inner surface of the container body 10 is obtained.

Modified Example of Composite Container and Composite Preform Next, a modified example of the present embodiment will be described with reference to FIGS.

  The modified example shown in FIGS. 17 and 18 does not have a trunk and a bottom as the inner label member 60a and the plastic member 40a, but uses a cylindrical inner label member 60a and a plastic member 40a. . Other configurations are substantially the same as those of the embodiment shown in FIGS. In the modification shown in FIGS. 17 and 18, the same parts as those in the embodiment shown in FIGS. The manufacturing method of the composite container 10A and the manufacturing method of the composite preform 70 are also substantially the same as those in the embodiment shown in FIGS.

DESCRIPTION OF SYMBOLS 10 Container main body 10A Composite container 10a Preform 11, 11a Mouth part 12 Shoulder part 13 Neck part 14 Screw part 17 Flange part 20, 20a Body part 21 Deposition film 30, 30a Bottom part 40, 40a Plastic member 41 Body part 42 Bottom part 50 Blow Mold 60, 60a Inner label member 61 Body 62 Bottom 70 Composite preform

Claims (12)

In composite containers,
A container body made of plastic material;
A plastic member provided in close contact with the outside of the container body,
The container body and the plastic member are expanded as a unit by blow molding,
A composite container, wherein a vapor deposition film is formed on an inner surface of the container body.   The composite container according to claim 1, wherein the deposited film is a gas barrier thin film containing silicon oxide.   The composite container according to claim 2, wherein a thickness of the deposited film is 0.005 μm to 0.4 μm.   The composite container according to claim 1, wherein the deposited film is a gas barrier thin film containing hard carbon.   The composite container according to claim 4, wherein a thickness of the deposited film is 0.05 μm to 5 μm. An inner label member provided in close contact so as to surround the outside of the preform;
The composite container according to claim 1, wherein the plastic member is provided in close contact with the outside of the inner label member. In the manufacturing method of the composite container,
Preparing a preform made of plastic material;
Providing a plastic member on the outside of the preform;
Blow molding is performed on the preform and the plastic member, and the preform and the plastic member are inflated as a unit, thereby closely contacting the container body corresponding to the preform and the outside of the container body. Obtaining a composite container having a plastic member provided with
And a step of forming a vapor deposition film on the inner surface of the container main body.   8. The method of manufacturing a composite container according to claim 7, wherein the vapor deposition film is a gas barrier thin film containing silicon oxide.   9. The method of manufacturing a composite container according to claim 8, wherein the thickness of the deposited film is 0.005 [mu] m to 0.4 [mu] m.   The method for manufacturing a composite container according to claim 7, wherein the vapor deposition film is a gas barrier thin film containing hard carbon.   The thickness of the said vapor deposition film is 0.05 micrometer-5 micrometers, The manufacturing method of the composite container of Claim 10 characterized by the above-mentioned. A step of providing an inner label member so as to surround the outside of the preform;
The method for manufacturing a composite container according to any one of claims 7 to 11, wherein the plastic member is provided outside the inner label member.

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