JP7287046B2 - Processing device and composite container manufacturing method - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to processing equipment and methods of manufacturing composite containers.

2. Description of the Related Art In recent years, plastic bottles have become common as bottles for containing content liquids such as food and drink, and such plastic bottles contain content liquids.

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

By the way, in the conventional biaxial stretch blow molding method, for example, a preform containing a single-layer material such as PET or PP, a multi-layer material, or a blend material is used to form a container shape. However, in conventional biaxial stretch blow molding processes, it is common to simply mold the preform into a container shape. Therefore, when various functions and properties (barrier properties, heat retention, etc.) are to be imparted to the container, the means for doing so are limited, for example, by changing the material constituting the preform. In particular, it is difficult to give different functions and characteristics to different parts of the container (for example, the body and the bottom).

In response to this, the applicant of the present application has proposed a composite container capable of imparting various functions and characteristics to the container in Patent Document 1.

JP 2015-128858 A

Since the plastic member included in the above composite container is not welded or adhered to the container body, it can be separated (peeled off) from the container body and removed, and the container body can be recycled. However, the plastic member is provided so as to be in close contact with the container body, and there is room for improvement in its separability from the container body.

The present disclosure has been made in consideration of such points, and a processing apparatus and a composite container capable of performing a cutting process for enhancing the separation of a plastic member provided on the outside of the container body in the composite container. It aims at providing the manufacturing method of.

A processing apparatus according to one embodiment comprises a container holding portion for holding a composite container having a container body and a plastic member provided in close contact with the outside of the container body; a processing unit which is provided so as to be able to move forward and backward with respect to the composite container and which has a cutting blade that forms a cutting portion that penetrates the plastic member of the composite container; an adjusting member that adjusts the pushing amount of the cutting blade with respect to the plastic member by coming into contact therewith.

In the processing device according to one embodiment, the adjusting member may be arranged adjacent to the cutting blade.

In the processing apparatus according to one embodiment, the processing section is provided rotatably about a first rotation axis extending along a direction toward and away from the composite container held by the container holding section. may

In the processing apparatus according to one embodiment, the cutting blade has a circular shape and is provided rotatably about a second rotation axis perpendicular to the first rotation axis to form the cutting portion. At that time, the cutting blade itself may rotate with respect to the second rotation axis.

In the processing apparatus according to one embodiment, the adjusting member has a cylindrical shape and is rotatable about the second rotation axis. It may rotate about a second pivot axis.

The processing apparatus according to one embodiment may further include a rotation restricting portion that restricts rotation of the container body.

In one embodiment, the processing apparatus includes two adjustment members, the processing unit includes two cutting blades, and each adjustment member is arranged adjacent to a different cutting blade. may be

The processing apparatus according to one embodiment may include two adjustment members, and one adjustment member may be arranged adjacent to the cutting blade.

A method for manufacturing a composite container according to one embodiment includes the steps of preparing a preform, providing a plastic member outside the preform, and blow-molding the preform and the plastic member. The preform and the plastic member are integrally expanded by blow molding using and forming a cut portion penetrating the plastic member after blow molding using a processing apparatus according to the present disclosure, wherein the cut portion is formed In the step of adjusting, the adjusting member is brought into contact with the plastic member after blow molding to adjust the pushing amount of the cutting blade with respect to the plastic member.

In the method of manufacturing a composite container according to one embodiment, in the step of forming the cut portion, the cut portion rotates the cut blade or the container body while pressing the cut blade against the plastic member. may be formed by allowing

In the method of manufacturing a composite container according to one embodiment, in the step of forming the cut portion, the cut portion may be formed by pressing the cutting blade against the plastic member.

In the method of manufacturing a composite container according to one embodiment, in the step of forming the cut portion, the cut portion may be formed in the plastic member at a position corresponding to the bottom portion of the container body.

In the method of manufacturing a composite container according to one embodiment, in the step of forming the cut portion, the cut portion may be formed in the plastic member at a position corresponding to the trunk portion of the container body.

The method for manufacturing a composite container according to one embodiment may further include the step of shrinking the plastic member around the cut by heating the plastic member around the cut.

Advantageous Effects of Invention According to the present disclosure, it is possible to perform a cutting process that enhances the separability of a plastic member provided on the outside of a container body in a composite container.

FIG. 1 is a partial vertical sectional view showing a composite container processed by the processing apparatus according to the first embodiment. FIG. 2 is a horizontal cross-sectional view (cross-sectional view taken along the line II-II in FIG. 1) showing the composite container processed by the processing apparatus according to the first embodiment. FIG. 3 is a bottom view showing a composite container processed by the processing apparatus according to the first embodiment. FIG. 4 is a partial vertical cross-sectional view showing a composite preform for manufacturing a composite container. FIG. 5 is a horizontal cross-sectional view (cross-sectional view along line VV in FIG. 4) showing a composite preform for manufacturing a composite container. 6(a) to (d) are perspective views showing various plastic members. FIG. 7 is a perspective view showing the processing device according to the first embodiment. FIG. 8 is an enlarged view (an enlarged view corresponding to the VIII section in FIG. 7) showing the processing apparatus according to the first embodiment. FIG. 9 is a side view showing the processing device according to the first embodiment. FIG. 10 is a plan view showing the processing device according to the first embodiment, and is a plan view showing a state in which the rod of the processing device is in the advancing position. FIG. 11A is a cross-sectional view (cross-sectional view taken along line XIA-XIA in FIG. 10) showing the processing apparatus according to the first embodiment. 11B(a)-(c) are cross-sectional views explaining the operation of the processing apparatus according to the first embodiment. 12(a) to (f) are schematic diagrams showing the method of manufacturing the composite container according to the first embodiment. 13(a) to (c) are schematic diagrams showing the method of manufacturing the composite container according to the first embodiment. 14(a) to (c) are schematic diagrams showing the method of manufacturing the composite container according to the first embodiment. FIG. 15 is a bottom view showing a modification of the composite container processed by the processing apparatus according to the first embodiment. FIG. 16 is a view corresponding to FIG. 11A and a cross-sectional view showing a modification of the processing apparatus according to the first embodiment. FIG. 17 is a view corresponding to FIG. 11A and a cross-sectional view showing a modification of the processing apparatus according to the first embodiment. FIG. 18 is a front view showing the bottom of a modification of the composite container processed by the processing apparatus according to the first embodiment. FIG. 19 is a bottom view showing a modification of the composite container processed by the processing apparatus according to the first embodiment. FIG. 20 is a vertical cross-sectional view (cross-sectional view taken along line XX-XX in FIG. 19) showing a modification of the composite container processed by the processing apparatus according to the first embodiment. FIG. 21 is a partial vertical sectional view showing a composite container processed by the processing apparatus according to the second embodiment. FIG. 22 is a side view showing the processing device according to the second embodiment. FIG. 23 is a plan view showing the processing device according to the second embodiment. FIG. 24 is a cross-sectional view (cross-sectional view taken along line XXIV-XXIV of FIG. 22) showing the processing apparatus according to the second embodiment. 25(a) to (d) are schematic diagrams showing a method of manufacturing a composite container according to the second embodiment. FIG. 26 is a front view showing a modification of the composite container processed by the processing apparatus according to the second embodiment. FIG. 27 is a front view showing a modification of the composite container processed by the processing apparatus according to the second embodiment.

(First embodiment)
A first embodiment of the present disclosure will be described below with reference to the drawings. 1 to 14 are diagrams showing the first embodiment. Each figure shown below is shown typically. Therefore, the size and shape of each part are appropriately exaggerated for easy understanding. In addition, it is possible to modify and implement as appropriate without departing from the technical idea. In addition, in each figure shown below, the same code|symbol is attached|subjected to the same part and detailed description may be partially abbreviate|omitted. In addition, numerical values such as dimensions and material names of each member described in this specification are examples as an embodiment, and are not limited to these, and can be appropriately selected and used. In this specification, terms specifying shapes and geometrical conditions, such as parallel, orthogonal, and perpendicular terms, not only have strict meanings but also include substantially the same states.

Structure of Composite Container First, the outline of a composite container to be processed by the processing apparatus according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG. In this specification, the terms "upper" and "lower" respectively refer to the upper and lower sides when the composite container 10A is erected (Fig. 1), or when the processing apparatus is installed on the floor (Fig. Refers to above and below in 9).

The composite container 10A shown in FIGS. 1 to 3 is molded into a composite preform 70 (see FIGS. 4 and 5) including the preform 10a and the plastic member 40a using a blow molding die 50, as will be described later. It is obtained by expanding the preform 10a of the composite preform 70 and the plastic member 40a integrally by performing biaxial stretch blow molding.

Such a composite container 10A comprises an inner container body 10 made of a plastic material and a plastic member 40 provided in close contact with the outside of the container body 10 .

The container body 10 includes a mouth portion 11, a neck portion 13 provided below the mouth portion 11, a body portion 20 provided below the neck portion 13, and a bottom portion 30 provided below the body portion 20. there is

On the other hand, the plastic member 40 is closely attached to the outer surface of the container body 10 in a thinly stretched state, and is attached to the container body 10 in a state in which it cannot be easily moved or rotated.

Next, the container main body 10 will be described in detail. The container body 10 has the mouth portion 11, the neck portion 13, the body portion 20, and the bottom portion 30 as described above.

Of these, the mouth portion 11 has a threaded portion 14 to be screwed onto a cap (not shown) and a flange portion 17 provided below the threaded portion 14 . In addition, the shape of the mouth portion 11 may be a conventionally known shape. The content-filled composite container 10A is manufactured by filling the container main body 10 with contents such as a content liquid and screwing a cap (not shown) onto the mouth portion 11 .

The neck portion 13 is positioned between the flange portion 17 and the body portion 20 and has a substantially cylindrical shape with a substantially uniform diameter.

The body portion 20 includes a first portion 21 having a shape (a shape gradually increasing in area in a horizontal cross section) whose diameter gradually increases from the neck portion 13 side toward the bottom portion 30 side, and a first portion 21 provided below the first portion 21 . and a second portion 22 having a generally uniform diameter. Among them, the second portion 22 has a cylindrical shape. However, the shape is not limited to this, and the second portion 22 of the body portion 20 may have a polygonal tubular shape such as a quadrangular tubular shape or an octagonal tubular shape. Alternatively, the second portion 22 of the body 20 may have a tubular shape with a non-uniform horizontal cross-section from top to bottom. The outer surface of the body portion 20 may be formed with, for example, a vacuum absorbing panel or grooves or other irregularities.

On the other hand, the bottom portion 30 has a recess 31 located in the center and a grounding portion 32 provided around the recess 31 . The shape of the bottom portion 30 is also not particularly limited, and may have a conventionally known bottom portion shape (for example, a petaloid bottom shape, a round bottom shape, etc., which will be described later).

In addition, the thickness of the container body 10 at the body portion 20 is not limited to this, but can be reduced to approximately 50 μm or more and 250 μm or less, for example. In addition, the thickness of the container body 10 at the bottom portion 30 is not limited to this, but can be, for example, about 0.15 mm or more and 2.0 mm or less. Further, the weight of the container body 10 is not limited to this, but can be 10 g or more and 20 g or less. By reducing the wall thickness of the container body 10 in this way, the weight of the container body 10 can be reduced.

Such a container body 10 can be produced by biaxially stretching blow molding a preform 10a (described later) produced by injection molding a synthetic resin material. As the material of the container body 10, it is preferable to use a thermoplastic resin, particularly PE (polyethylene), PP (polypropylene), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), and PC (polycarbonate). The container body 10 may be colored in red, blue, yellow, green, brown, black, white, or the like, but is preferably colorless and transparent in consideration of ease of recycling. Moreover, you may blend and use the various resin mentioned above. Further, a deposited film such as a diamond-like carbon film or a silicon oxide thin film may be formed on the inner surface of the container body 10 in order to improve the barrier properties of the container.

Further, the container body 10 can also be formed as a multi-layer molded bottle having two or more layers. That is, by injection molding, for example, the intermediate layer is formed of a gas barrier resin (intermediate layer) such as MXD6, MXD6 + fatty acid salt, PGA (polyglycolic acid), EVOH (ethylene vinyl alcohol copolymer), or PEN (polyethylene naphthalate). Alternatively, the preform 10a having three or more layers may be injection-molded and then blow-molded to form a multi-layer bottle having gas barrier properties. As the intermediate layer, a resin obtained by blending the various resins described above may be used.

In addition, by mixing an inert gas (nitrogen gas, argon gas) with the melt of the thermoplastic resin, a foamed preform having a foamed cell diameter of 0.5 μm or more and 100 μm or less is molded, and this foamed preform is blow molded. By doing so, the container body 10 may be produced. Since such a container body 10 incorporates foam cells, the light shielding property of the entire container body 10 can be enhanced.

Such a container main body 10 may be made of a bottle with a full filling volume of 100 ml or more and 2000 ml or less, for example. Alternatively, the container body 10 may be a large bottle with a full filling capacity of, for example, 10 L or more and 60 L or less.

Next, the plastic member 40 will be described. The plastic member 40 (40a) is provided so as to surround the outside of the preform 10a as will be described later, and is obtained by closely contacting the outside of the preform 10a and then biaxially stretch blow molding 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 adhered, and is in close contact with the container body 10 so as not to move or rotate. The plastic member 40 is thinly stretched on the outer surface of the container body 10 to cover the container body 10 . Further, 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 neck portion 13 , body portion 20 and bottom portion 30 of the container body 10 excluding the mouth portion 11 . Thereby, desired functions and characteristics can be imparted to the neck portion 13 , the body portion 20 and the bottom portion 30 of the container body 10 .

In addition, the plastic member 40 may be provided in the entire area or a partial area of the container body 10 other than the mouth portion 11 . For example, the plastic member 40 may be provided so as to cover the entire body portion 20 and bottom portion 30 of the container body 10 excluding the mouth portion 11 and neck portion 13 . Alternatively, the plastic member 40 may be provided so as to cover the body portion 20 and the bottom portion 30 of the container body 10 excluding the mouth portion 11 , the neck portion 13 and the central portion of the bottom portion 30 .

Such a plastic member 40 may be one that does not have a contracting action with respect to the preform 10a, or one that has a contracting action.

When the plastic member 40 has a shrinking action on the preform 10a, the plastic member 40 is provided outside the preform 10a and heated integrally with the preform 10a for biaxial stretch blow molding. obtained by being

Since the plastic member 40 is not welded or adhered to the container body 10, it can be peeled off from the container body 10 and removed. As shown in FIGS. 1 and 3 , a cut portion 45 is formed through the plastic member 40 at a position corresponding to the bottom portion 30 of the container body 10 in the plastic member 40 . As a result, the plastic member 40 can be separated from the notch 45 , and the plastic member 40 can be easily separated and removed from the surface of the container body 10 . Therefore, in the composite container 10A, the separation of the plastic member 40 can be made easier, and the recycling of the container body 10 can be facilitated. In addition, since the notch 45 is formed in the plastic member 40 at a position corresponding to the bottom 30 of the container body 10, it is possible to prevent the appearance of the composite container 10A from being spoiled. Also, the thickness of the bottom portion 30 is generally thicker than the thickness of the trunk portion 20 . For this reason, since the cut portion 45 is formed at a position corresponding to the bottom portion 30 of the container body 10, the cut portion can be cut while pressing the cutting blade 82 (see FIG. 7, etc.) against the plastic member 40, as will be described later. Even if the cutting edge 82 should come into contact with the container body 10 when forming the groove 45 , it is possible to prevent the container body 10 from being perforated. As a result, it is possible to effectively prevent the contents from leaking out of the composite container 10A.

As shown in FIG. 3 , the notch 45 is formed in the bottom 30 at a position corresponding to the recess 31 . A plurality of cut portions 45 are formed. As a result, the user can easily separate and remove the plastic member 40 from the container body 10 using the cut portion 45 as a starting point. The notch 45 is formed in an arc shape when viewed from the bottom surface, and in this embodiment, two notches 45 linearly extending along the circumferential direction of the container body 10 are formed. The two notches 45 are formed so as to be evenly distributed about 180 degrees when viewed from the bottom surface direction. In addition, in the circular arc shape formed by each cut portion 45, the central angle θ is approximately 45°. The central angle θ can be appropriately changed according to the number of cut portions 45 to be formed, and the central angle θ may be 45° or less, for example, 30°. In addition, the number of cuts 45 formed in the bottom portion 30 may be one. In this case, it is preferable that the central angle θ of the circular arc shape formed by the cut portion 45 is 180° or less. As a result, it is possible to prevent the plastic member 40 from curling up from the bottom portion 30 of the container body 10 starting from the cut portion 45 during transportation of the composite container 10A. Also, the number of notches 45 formed in the bottom portion 30 may be three or more.

Examples of the plastic member 40 include polyethylene, polypropylene, polyethylene terephthalate, polyethylene naphthalate, poly-4-methylpentene-1, polystyrene, AS resin, ABS resin, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, Polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral, diallyl phthalate resin, fluorine resin, polymethyl methacrylate, polyacrylic acid, polymethyl acrylate, polyacrylonitrile, polyacrylamide, polybutadiene, polybutene-1, polyisoprene, polychloroprene, Ethylene propylene rubber, butyl rubber, nitrile rubber, acrylic rubber, silicone rubber, fluorine rubber, nylon 6, nylon 6,6, aromatic polyamide, polycarbonate, polyethylene terephthalate, polybutylene terephthalate, polynaphthalene ethylene, U polymer, Liquid crystal polymer, modified polyphenylene ether, polyetherketone, polyetheretherketone, unsaturated polyester, alkyd resin, polyimide, polysulfone, polyphenylene sulfide, polyethersulfone, silicone resin, polyurethane, phenolic resin, urea resin, polyethylene oxide, polypropylene oxide , polyacetal, epoxy resin, and the like. Among these, thermoplastic inelastic resins such as polyethylene (PE) such as low density polyethylene (LDPE), polypropylene (PP), polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) are preferably used. A blend material, a multilayer structure, or a partially multilayer structure may also be used. Furthermore, various additives other than the main component resin may be added to the material of the plastic member 40 as long as the characteristics of the plastic member 40 are not impaired. Additives include, for example, plasticizers, ultraviolet stabilizers, anti-coloring agents, matting agents, deodorants, flame retardants, weathering agents, antistatic agents, thread friction reducing agents, slip agents, release agents, anti- Oxidizing agents, ion exchange agents, color pigments, and the like can be added. In addition, by mixing an inert gas (nitrogen gas, argon gas) with a melt of a thermoplastic resin, a foamed member having a foamed cell diameter of 0.5 μm or more and 100 μm or less can be used to mold this foamed preform. can enhance the light shielding property.

The plastic member 40 may be made of a light barrier material that blocks invisible light such as ultraviolet rays. In this case, the light barrier property of the composite container 10A can be improved without using a multi-layered preform or a preform containing a blend material as the preform 10a, and deterioration of the content liquid due to ultraviolet rays or the like can be prevented. Such a material may be a blend material or a material obtained by adding a light-shielding resin to PET, PE, or PP. Also, a foam member having a foam cell diameter of 0.5 μm or more and 100 μm or less, which is produced by mixing an inert gas (nitrogen gas, argon gas) with a melt of a thermoplastic resin, may be used.

The plastic member 40 may be made of a material (a material with low thermal conductivity) that has higher cold-retaining or heat-retaining properties than the plastic material that constitutes 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 cold-retaining property or heat-retaining property of the composite container 10A is enhanced. Moreover, when the user grips the composite container 10A, it is possible to prevent the composite container 10A from being difficult to hold due to being too cold or too hot. Such materials include foamed polyurethane, polystyrene, PE (polyethylene), PP (polypropylene), phenol resin, polyvinyl chloride, urea resin, silicone, polyimide, melamine resin, and the like. It is preferable to mix hollow particles with the resin material containing these resins. The average particle diameter of the hollow particles is preferably 1 μm or more and 200 μm or less, more preferably 5 μm or more and 80 μm or less. The "average particle size" means the volume average particle size, and is measured by a known method using a particle size distribution/particle size distribution analyzer (e.g., Nanotrac particle size distribution analyzer manufactured by Nikkiso Co., Ltd.). can do. The hollow particles may be organic hollow particles made of resin or the like, or inorganic hollow particles made of glass or the like. Hollow particles are preferred. Examples of resins constituting organic hollow particles include styrene resins such as crosslinked styrene-acrylic resins, (meth)acrylic resins such as acrylonitrile-acrylic resins, phenolic resins, fluorine resins, polyamide resins, and polyimides. resins, polycarbonate resins, polyether resins, and the like. In addition, Low Pake HP-1055, Low Pake HP-91, Low Pake OP-84J, Low Pake Ultra, Low Pake SE, Low Pake ST (manufactured by Rohm and Haas Co., Ltd.), Nipol MH-5055 (manufactured by Nippon Zeon Co., Ltd.), SX8782 , SX866 (manufactured by JSR Corporation) and other commercially available hollow particles can also be used. The content of the hollow particles is preferably 0.01 parts by mass or more and 50 parts by mass or less, more preferably 1 part by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the resin material contained in the plastic member 40. It is more preferable to have

Also, the plastic member 40 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 composite container 10A can be easily gripped by the user without changing the material of the container body 10 .

The plastic member 40 may be colored red, blue, yellow, green, brown, black, white, or the like, and may be transparent or opaque.

Moreover, the thickness of the plastic member 40 is not limited to this, but can be, for example, about 5 μm or more and 500 μm or less when attached to the container body 10 .

Structure of Composite Preform Next, the structure of the composite preform will be described with reference to FIGS. 4 and 5. FIG.

As shown in FIGS. 4 and 5, the composite preform 70 includes a plastic material preform 10a 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 . The trunk portion 20a corresponds to the neck portion 13 and the trunk portion 20 of the container body 10 described above, and has a substantially cylindrical shape. The bottom portion 30a corresponds to the bottom portion 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 glued, and is in such close contact with the preform 10a that it does not move or rotate, or in such close contact that it does not fall under its own weight. . The plastic member 40a surrounds the preform 10a over its entire circumferential direction and has a circular horizontal cross section.

In this case, the plastic member 40a is provided so as to cover the entire body portion 20a and the bottom portion 30a of the preform 10a.

In addition, the plastic member 40a may be provided in the entire region or a partial region other than the mouth portion 11a. Alternatively, the plastic member 40a may be provided so as to cover the body portion 20a except for the bottom portion 30. As shown in FIG.

Such a plastic member 40a may be one that does not contract with respect to the preform 10a, or one that contracts.

In the case where the plastic member 40a has a shrinking action, the plastic member 40a used is one that shrinks (for example, thermally shrinks) with respect to the preform 10a when an external action (for example, heat) is applied. It's okay to be Alternatively, the plastic member 40a itself may be contractible or elastic and contractible without external action.

In addition, when the plastic member 40a has a heat-shrinking effect, after the cylindrical plastic member 40a is fitted into the preform 10a, the lower end of the plastic member 40a (the end opposite to the opening 11a) is closed. The blank portion formed on the substrate may be thermocompression bonded.

Examples of the plastic member 40a include a direct blow tube produced by direct blow molding, a sheet molded tube produced by sheet molding, an extruded tube produced by extrusion molding, an injection molded tube produced by injection molding, and an inflation molding. Although an inflation-molded tube or the like produced by the method can be used, the present invention is not limited to this, and molding methods other than those described above may be used.

The plastic member 40a may be colored red, blue, yellow, green, brown, black, white, or the like, and may be transparent or opaque.

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

As shown in FIG. 6(a), the plastic member 40a has a bottomed cylindrical shape as a whole, and has a seamless cylindrical trunk portion 41 and a bottom portion 42 connected to the trunk portion 41. can be In this case, since the bottom portion 42 of the plastic member 40a covers the bottom portion 30a of the preform 10a, various functions and characteristics such as barrier properties can be imparted to the bottom portion 30 in addition to the body portion 20 of the composite container 10A. can be done. Examples of such a plastic member 40a include the above-described direct blow tube, sheet-molded tube, and injection-molded tube.

As shown in FIG. 6(b), the plastic member 40a may have a circular tube shape (bottomless cylindrical shape) as a whole and have a seamless cylindrical body portion 41. As shown in FIG. 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.

Alternatively, as shown in FIGS. 6(c) and 6(d), the plastic member 40a may be produced by forming a film into a cylinder and adhering the ends thereof. In this case, as shown in FIG. 6(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. 6(d), The bottom portion 42 may be attached to form a cylindrical shape with a bottom.

Construction of Processing Apparatus Next, the construction of the processing apparatus 80 according to the present embodiment will be described with reference to FIGS. 7 to 11B. This processing device 80 is for forming a cut portion 45 penetrating through the plastic member 40 provided in close contact with the outside of the container body 10 .

As shown in FIGS. 7 and 9, the processing device 80 includes a container holding portion 81, a processing portion 83, and an adjusting member 84. As shown in FIGS. The container holding part 81 holds the composite container 10A. The processing portion 83 has a cutting edge 82 . The cutting blade 82 is provided so as to be able to move forward and backward with respect to the composite container 10A held by the container holding portion 81, and forms a cutting portion 45 penetrating the plastic member 40 of the composite container 10A. The adjusting member 84 is attached to the processing portion 83 and abuts against the plastic member 40 to adjust the pushing amount of the cutting blade 82 into the plastic member 40 .

Of these, the container holding portion 81 is attached to a frame assembly 90 which will be described later. In the present embodiment, the container holding portion 81 holds the composite container 10A in a state in which the composite container 10A is laid down sideways so that the bottom portion 30 of the container body 10 faces the processing portion 83 . The container holding portion 81 has a first holding portion 81 a that holds the mouth portion 11 of the container body 10 and a second holding portion 81 b that holds the trunk portion 20 of the container body 10 . As shown in FIG. 7, the first holding portion 81a is formed with a recessed portion 81c having a shape corresponding to the shape of the mouth portion 11 of the container body 10, and the mouth portion 11 of the container body 10 is placed in the recessed portion 81c. are to be accommodated. An opening 81d having an inner diameter larger than the outer diameter of the second portion 22 of the trunk portion 20 of the container body 10 is formed in the second holding portion 81b. A trunk portion 20 is accommodated.

The processing portion 83 is attached to a driving portion 86 arranged on a base portion 85 . The processing portion 83 is movable with respect to the fixed container holding portion 81 . The base portion 85 supports the drive portion 86, and is supported by a frame assembly 90, which will be described later. Note that the base portion 85 is not limited to this, and may be arranged so as to be in direct contact with the floor surface of the work space.

The driving portion 86 has a body portion 86a arranged on the base portion 85, and a rod 86b that can move back and forth along a predetermined direction (horizontal direction (horizontal direction in FIG. 9)) with respect to the body portion 86a. are doing. The processing portion 83 is attached to the rod 86b. The rod 86b is retractable with respect to the main body portion 86a, and extends from the advanced position (see FIGS. 10 and 11A) projecting in a predetermined direction (leftward in FIG. 9) from the main body portion 86a, and from the advanced position. It is configured to be able to advance and retreat between a retracted position (see FIGS. 7 to 9) in which a portion is retracted into the body portion 86a. Further, in this case, the forward/backward movement of the rod 86b is guided by the guide member 87. As shown in FIG.

7 and 9, the driving portion 86 includes a lever 86c for switching between the advanced position and the retracted position of the rod 86b. It is configured so that the position can be switched. An air cylinder, for example, can be used as the drive unit 86 . In this case, for example, when the lever 86c is rotated from the initial position (see FIGS. 7 and 9), air is supplied to the cylinder (not shown) of the air cylinder, and the rod 86b assumes the advanced position. On the other hand, when the lever 86c is returned to the initial position, air is discharged from the air cylinder (not shown), and the rod 86b assumes the retracted position. Also, the amount of protrusion of the rod 86b from the body portion 86a when the rod 86b is in the advanced position is appropriately set so that the adjustment member 84 contacts the composite container 10A when the rod 86b is in the advanced position. be able to.

The processing portion 83 attached to the drive portion 86 has a rotation axis extending along a direction (horizontal direction (horizontal direction in FIG. 9)) toward and away from the composite container 10A held by the container holding portion 81. It is rotatably provided with respect to X (first rotation axis). Moreover, as described above, the processing portion 83 has the cutting edge 82 . As shown in FIGS. 7 to 11A, the cutting blade 82 is attached to a body portion 83a having a substantially rectangular parallelepiped shape. As shown in FIG. 11A, the body portion 83a is formed with a first insertion hole 831 extending along the rotation axis X. By inserting the rod 86b into the first insertion hole 831, , the processing portion 83 is attached to the rod 86 b of the driving portion 86 . A second insertion hole 832 extending along a rotation axis Y (second rotation axis) perpendicular to the rotation axis X is formed in the body portion 83a. A cylindrical portion 84a of 84, which will be described later, is inserted.

In this embodiment, the processing portion 83 includes two cutting blades 82, and each cutting blade 82 is attached to an upper portion and a lower portion of the main body portion 83a. Moreover, as shown in FIGS. 7, 8 and 10, the cutting edge 82 has a circular shape. The cutting blade 82 is rotatable about the rotation axis Y so that the cutting blade 82 itself rotates about the rotation axis Y when forming the cut portion 45 in the plastic member 40 . is configured to Specifically, as shown in FIG. 11A, an opening 82a is formed in the center of the cutting blade 82, and a later-described cylindrical portion 84a of the adjusting member 84 passes through the opening 82a. The adjusting member 84 is attached to the body portion 83a of the processing portion 83 with the bolt B1, so that the cutting blade 82 rotates about the rotation axis Y concentrically with the adjusting member 84. As shown in FIG. In this case, as an example, the cutting blade 82 may be a circular cutter. The outer diameter of the circular cutter can be about 20 mm or more and 35 mm or less, and as an example, it may be 28.00 mm.

Such a processing unit 83 is configured to form the cut portion 45 in the plastic member 40 by rotating the cutting blade 82 while pressing the cutting blade 82 against the plastic member 40 . there is That is, when the processing portion 83 rotates about the rotation axis X, the cutting blade 82 attached to the main body portion 83a rotates about the rotation axis X. As shown in FIG. As a result, the cutting blade 82 forms a cut 45 in the plastic member 40 . In addition, as described above, the cutting blade 82 is rotatably provided with respect to the rotation axis Y. As shown in FIG. Therefore, when forming the cut portion 45 , the cutting blade 82 rotates about the rotation axis X while being pressed against the plastic member 40 . It rotates (rotates) against As a result, when forming the cut portion 45, the occurrence of burrs and the like in the cut portion 45 can be suppressed, and the wear of the cutting blade 82 can be suppressed.

When the rod 86b takes the advanced position, the cutting blade 82 contacts the plastic member 40 (see FIG. 11A), and when the rod 86b takes the retracted position, the cutting blade 82 It is in a state where it does not come into contact with the plastic member 40 (see FIGS. 7 to 9). When the cutting blade 82 is in contact with the plastic member 40, the pushing amount of the cutting blade 82 with respect to the plastic member 40 is adjusted by an adjusting member 84, as will be described later. Therefore, it is possible to prevent the container body 10 from being damaged when the cut portion 45 is formed in the plastic member 40 .

Further, the processing portion 83 further has a lever 83b for rotating the processing portion 83, and the processing portion 83 is configured to rotate about the rotation axis X by rotating the lever 83b. there is In this case, when the lever 83b is rotated from the initial position (see FIGS. 7 to 9) while the rod 86b is in the advancing position, the cutting blade 82 is rotated and the cutting blade 82 is made of plastic. An arc-shaped notch 45 is formed in the member 40 .

Next, the adjusting member 84 will be explained. The adjusting member 84 prevents the cutting edge 82 from excessively entering the plastic member 40 by contacting the bottom portion of the composite container 10A (the portion corresponding to the bottom portion 30 of the container body 10). As shown in FIGS. 7 to 11A, the adjustment member 84 is attached to the body portion 83a of the processing portion 83. As shown in FIGS. For this reason, the adjustment member 84 is provided so as to be rotatable about the rotation axis X together with the main body portion 83 a of the processing portion 83 .

As shown in FIG. 8, the adjusting member 84 has a cylindrical shape. The adjusting member 84 is provided rotatably about the rotation axis Y, and is configured to rotate about the rotation axis Y when the cut portion 45 is formed. Specifically, as shown in FIG. 11A, adjustment member 84 includes a centrally formed cylindrical portion 84a. The adjusting member 84 is inserted into the second insertion hole 832 of the body portion 83a of the processing portion 83 while the cylindrical portion 84a passes through the opening 82a of the cutting edge 82 of the processing portion 83. It is attached to the portion 83a. In this manner, the adjustment member 84 rotates about the rotation axis Y. As shown in FIG. In this manner, the adjustment member 84 itself rotates about the rotation axis Y, so that when the cutting edge 82 forms the cut portion 45 in the plastic member 40 , the adjustment member 84 cuts the container body 10 . It can prevent injury.

In addition, as described above, the adjustment member 84 and the cutting blade 82 rotate (rotate) concentrically with each other. As a result, even when the adjusting member 84 and the cutting blade 82 rotate (rotate), the radially outward protrusion amount of the cutting blade 82 from the outer surface 84b of the adjusting member 84 can be adjusted. It can be substantially uniform all around the circumference of the member 84 . Therefore, even if the adjustment member 84 and the cutting blade 82 rotate (rotate) when forming the cutting portion 45 in the plastic member 40 , the cutting blade 82 cuts the container body 10 . It can prevent injury.

The outer diameter of the adjusting member 84 is smaller than the outer diameter of the cutting edge 82 . The outer diameter of the adjusting member 84 is set so that the cutting blade 82 penetrates the plastic member 40 and the pushing amount of the cutting blade 82 into the container body 10 is about 0.01 mm or more and 0.05 mm or less. preferably. As a result, the notch 45 that penetrates the plastic member 40 can be reliably formed by the notch blade 82, and the container body 10 can be prevented from being damaged. For example, when the surface of the plastic member 40 on which the cut portion 45 is formed and the surface with which the adjusting member 84 abuts are on the same plane, the outer diameter of the adjusting member 84 is R1, and the cutting edge 82 Assuming that the outer diameter of the plastic member 40 is R2 and the thickness of the plastic member 40 at the portion where the notch 45 is formed is T, it is preferable that the following formula 1 is satisfied.
T + 0.01 (mm) ≤ R2 - R1 ≤ T + 0.05 (mm) Formula (1)
On the other hand, in this embodiment, the notch 45 is formed in the recess 31 of the bottom 30 . Also, the adjusting member 84 is in contact with the ground portion 32 of the bottom portion 30 . Even if the surface on which the cut portion 45 is formed and the surface on which the adjusting member 84 abuts are not on the same plane, the outer diameter of the adjusting member 84 is large enough to allow the cutting blade 82 to reach the container body 10 . It is preferable to set the pushing amount to be about 0.01 mm or more and 0.05 mm or less. The present inventors conducted experiments using adjusting members 84 with various outer diameter dimensions, and found that the amount of pushing of the cutting blade 82 into the container body 10 was about 0.01 mm or more and 0.05 mm or less. The outer dimensions of the adjusting member 84 were determined. In this case, the optimum outer diameter of the adjusting member 84 was 26.70 mm. That is, when the outer diameter of the adjusting member 84 is 26.70 mm, the plastic member 40 can be easily separated from the notch 45, and damage to the container body 10 can be suppressed. rice field.

Also, the adjustment member 84 is arranged adjacent to the cutting blade 82 . As shown in FIGS. 9 and 11A, in this embodiment, the processing device 80 includes two adjustment members 84, each adjustment member 84 being positioned adjacent to a different cutting edge 82. ing. That is, one adjustment member 84 of the two adjustment members 84 is arranged above the cutting blade 82 attached to the upper portion of the body portion 83a, and the other adjustment member 84 is arranged below the body portion 83a. It is positioned below the cutting blade 82 attached to the . In this case, the adjusting member 84 abuts on the plastic member 40 at a position corresponding to the grounding portion 32 of the bottom portion 30 of the container body 10 , and the cutting edge 82 is positioned on the plastic member 40 at the concave portion of the bottom portion 30 of the container body 10 . It is designed to be pushed into the position corresponding to 31 (see FIG. 11A).

Such an adjusting member 84 is in a state in which the outer side surface 84b of the adjusting member 84 abuts against the plastic member 40 when the rod 86b is in the advancing position (see FIG. 11A). In other words, the adjustment member 84 abuts against the plastic member 40, as will be described later, so that the rod 86b assumes the advanced position. On the other hand, when the rod 86b is in the retracted position, the adjusting member 84 does not come into contact with the plastic member 40 (see FIGS. 7 to 9).

Here, as described above, when the rod 86b assumes the advancing position, the cutting edge 82 of the processing portion 83 is also designed to contact the plastic member 40 in the same manner. Specifically, when the rod 86b is switched from the retracted position to the advanced position, first, as shown in FIG. do. Next, as shown in FIG. 11B(b), the cutting edge 82 is pushed into the plastic member 40 . After that, when the rod 86b advances further, the adjustment member 84 comes into contact with the plastic member 40 as shown in FIG. 11B(c). Then, when the adjusting member 84 abuts against the plastic member 40, the rod 86b stops moving, and the rod 86b assumes the moving position. In this way, when the adjustment member 84 abuts against the plastic member 40, the rod 86b stops moving and assumes the advanced position, so that the cutting blade 82 is no longer pushed into the plastic member 40. FIG. Therefore, the pushing amount of the cutting blade 82 with respect to the plastic member 40 is determined by the amount of protrusion of the cutting blade 82 from the outer surface 84b of the adjusting member 84 (that is, the outer diameter of the adjusting member 84 and the outer diameter of the cutting blade 82). can be easily adjusted by adjusting the amount of half the difference between As a result, compared to adjusting the amount of protrusion of the rod 86b from the body portion 86a in order to adjust the amount of pressing of the cutting blade 82 with respect to the plastic member 40, the amount of pressing can be adjusted accurately and easily. be able to.

7 to 11A, the processing device 80 further includes a rotation restricting portion 89 that restricts rotation of the container body 10. As shown in FIGS. The rotation restricting portion 89 has a shape corresponding to the bottom portion 30 of the container body 10, and is fixed to the tip of the rod 86b of the driving portion 86 with a bolt B2. When the rod 86b is in the advancing position, the rotation restricting portion 89 is fitted into the concave portion 31 of the bottom portion 30 of the container body 10 to rotate the container body 10 in a predetermined direction (leftward in FIGS. 9 to 11A). press to. As a result, the flange portion 17 of the container body 10 is pressed against the first holding portion 81a of the container holding portion 81, and the rotation of the container body 10 is restricted. Further, the rotation restricting portion 89 is configured so as not to rotate about the rotation axis X even when the processing portion 83 rotates. Therefore, it is possible to suppress the rotation of the container body 10 together with the rotation restricting portion 89 due to the rotation of the rotation restricting portion 89 fitted in the concave portion 31 of the bottom portion 30 of the container body 10 . .

Next, an example of the frame assembly 90 that supports the container holding portion 81 and the like will be described.

As shown in FIGS. 7 and 9 , the frame assembly 90 has a support member 91 and a height adjustment member 92 arranged on the support member 91 .

Of these, the support member 91 is arranged on the floor surface of the working space. The support member 91 is composed of a pair of square prism-shaped members, and each member is arranged so as to extend along the rotation axis X. As shown in FIG.

The height adjustment member 92 is formed of a quadrangular prism-shaped member, and is arranged so as to extend along the width direction of the support member 91 (the direction perpendicular to the rotation axis X). This height adjusting member 92 serves to adjust the heights of the container holding portion 81 , the base portion 85 and the guide member 87 . As a result, the processing portion 83 can form the cut portion 45 at a position corresponding to the bottom portion 30 of the container body 10 in the plastic member 40 provided in close contact with the outside of the container body 10 . It's becoming

In addition, in the frame assembly 90, each of the members described above may be fixed to each other by bolts or the like.

12(a)-(f), 13(a)-(c) and 14(a)-(c), a method for manufacturing the composite container 10A according to the present embodiment. will be explained.

First, a preform 10a made of plastic material is prepared (see FIG. 12(a)). In this case, for example, the preform 10a may be produced by an injection molding method using an injection molding machine (not shown). Further, as the preform 10a, a preform generally used conventionally may be used.

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 produced (FIG. 12 ( b) see). In this case, the plastic member 40 a has a bottomed cylindrical shape as a whole, and has a cylindrical trunk portion 41 and a bottom portion 42 connected to the trunk portion 41 .

At this time, a plastic member 40a having an inner diameter equal to or slightly smaller than the outer diameter of the preform 10a may be pushed into the preform 10a so as to be in 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 heated to 50° C. to 100° C. to heat-shrink the outer surface of the preform 10a. You may let it adhere to.

In this way, the plastic member 40a is brought into close contact with the outside of the preform 10a in advance to fabricate the composite preform 70, whereby a series of processes for fabricating the composite preform 70 (FIGS. 12A to 12B )) and a series of steps for blow molding (FIGS. 12(c) to (f)) can be performed at separate locations (factories, etc.).

Next, the composite preform 70 is heated by the heating device 51 (see FIG. 12(c)). At this time, the composite preform 70 is evenly heated in the circumferential direction by the heating device 51 while rotating with the opening 11a facing downward. The heating temperature of the preform 10a and the plastic member 40a in this heating step may be, for example, 90.degree. C. to 130.degree.

Also, a blow molding die 50 is prepared. Then, the composite preform 70 heated by the heating device 51 is sent to the blow molding die 50 for manufacturing the composite container 10A (see FIG. 12(d)).

The container body 10 and the plastic member 40 provided in close contact with the outside of the container body 10 are molded using this blow molding die 50 . In this case, the blow molding die 50 includes a mold body 52 which is a metal mold or a resin mold, and the mold body 52 is composed of a pair of trunk molds 50a and 50b and a bottom mold 50c. (see FIG. 12(d)). The inner surface of the mold body 52 has a shape corresponding to the neck 13, body 20 and bottom 30 of the composite container 10A. In FIG. 12(d), the pair of body molds 50a and 50b are open from 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 50 a and 50 b of the mold body 52 .

Next, as shown in FIG. 12(e), after the bottom mold 50c is lowered, the pair of trunk molds 50a and 50b are closed, and the pair of trunk molds 50a and 50b and the bottom of the mold body 52 are closed. A closed blow molding mold 50 is constructed by the mold 50c. Next, air is injected into the preform 10a and the composite preform 70 is subjected to biaxial stretch blow molding.

Thereby, the composite preform 70 is formed into a shape corresponding to the inner surface of the blow molding die 50 , and the container body 10 is obtained from the preform 10 a within the blow molding die 50 . During this time, the body molds 50a, 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 molding die 50, the preform 10a of the composite preform 70 and the plastic member 40a are expanded together. As a result, the preform 10 a and the plastic member 40 a are integrally formed into a shape corresponding to the inner surface of the blow molding die 50 .

In this manner, the composite container 10A having the container body 10 and the plastic member 40 provided in close contact with the outside of the container body 10 and before the notch 45 is formed is obtained.

Thereafter, as shown in FIG. 12(f), the pair of body molds 50a and 50b and the bottom mold 50c of the mold body 52 are separated from each other, and the composite container 10A is removed from the blow molding mold 50. As shown in FIG.

Next, the processing device 80 is used to form a cut portion 45 penetrating the plastic member 40 after the blow molding. In this case, the cutting portion 45 is formed by rotating the cutting blade 82 while pressing the cutting blade 82 against the plastic member 40 . At this time, first, the processing device 80 is prepared. Next, as shown in FIG. 13(a), the composite container 10A before the notch 45 is formed is attached to the container holding portion 81 of the processing device 80. Next, as shown in FIG. At this time, the mouth portion 11 of the container body 10 is accommodated in the recessed portion 81c of the first holding portion 81a, and the second portion 22 of the body portion 20 of the container body 10 is accommodated in the opening portion 81d of the second holding portion 81b. be. In this case, the lever 86c of the driving portion 86 is at the initial position, and the rod 86b of the driving portion 86 is at the retracted position.

Next, the user rotates the lever 86c from the initial position. As a result, as shown in FIG. 13(b), the rod 86b protrudes in a predetermined direction (to the left in FIG. 9) from the body portion 86a of the driving portion 86, and the rod 86b assumes the advancing position. As a result, the rotation restricting portion 89 (see FIG. 8, etc.) attached to the tip of the rod 86b is fitted into the concave portion 31 (see FIGS. 1 and 3) of the bottom portion 30 of the container body 10, thereby moving the composite container 10A into the Press in a predetermined direction (leftward in FIG. 9). Then, the flange portion 17 of the container body 10 is pressed against the first holding portion 81 a of the container holding portion 81 . At this time, the cutting edge 82 is pressed against the plastic member 40 at a position corresponding to the bottom portion 30 of the container body 10 .

Here, the processing device 80 includes an adjusting member 84 that adjusts the pushing amount of the cutting blade 82 with respect to the plastic member 40 by coming into contact with the plastic member 40 . Therefore, when the rod 86b assumes the advanced position, the adjustment member 84 abuts against the plastic member 40 after the blow molding, and the pushing amount of the cutting blade 82 into the plastic member 40 is adjusted. That is, when the cutting edge 82 is pressed against the position of the plastic member 40 corresponding to the concave portion 31 of the bottom portion 30 of the container body 10 , the outer surface 84 b of the adjusting member 84 is pushed out of the plastic member 40 . , contact a position corresponding to the ground portion 32 of the bottom portion 30 of the container body 10 (see FIG. 11A). When the adjusting member 84 comes into contact with the plastic member 40, the rod 86b stops moving. Therefore, the pushing amount of the cutting blade 82 into the plastic member 40 is adjusted to a predetermined amount. Further, the pushing amount of the cutting blade 82 into the plastic member 40 can be easily adjusted by adjusting the amount of protrusion of the cutting blade 82 from the outer surface 84b of the adjusting member 84. As shown in FIG. Therefore, by adjusting the amount of protrusion of the cutting blade 82 from the outer side surface 84b in advance, when the cutting blade 82 forms the cut portion 45 in the plastic member 40, the container body 10 is not damaged. can be suppressed.

Also, the adjustment member 84 is arranged adjacent to the cutting blade 82 . As a result, the distance between the portion of the plastic member 40 with which the adjustment member 84 abuts and the portion where the notch 45 is formed can be reduced. Therefore, it is possible to reduce the difference between the pushing amount of the cutting blade 82 into the plastic member 40 and the folding amount assumed based on the previously adjusted projection amount of the cutting blade 82 from the outer surface 84b. . In particular, even when the bottom portion 30 of the container body 10 has a three-dimensional shape (recessed portion 31), the portion of the plastic member 40 with which the adjusting member 84 abuts and the cut portion 45 are formed. The above-described difference can be reduced because the portion to be processed can be brought closer. Therefore, it is possible to more effectively prevent the container body 10 from being scratched when the notch 45 is formed. The processing device 80 also includes two adjustment members 84 , each adjustment member 84 being positioned adjacent to a different cutting edge 82 . As a result, the two cuts 45 can be easily formed in the plastic member 40 while effectively preventing the container body 10 from being damaged when the cuts 45 are formed.

Next, the user rotates the lever 83b of the processing section 83. As shown in FIG. As a result, the cutting blade 82 rotates about the rotation axis X as shown in FIG. 13(c). At this time, as described above, the flange portion 17 of the container body 10 is pressed against the first holding portion 81a of the container holding portion 81 by the rotation restricting portion 89 (see FIG. 8, etc.). Further, the rotation restricting portion 89 is fixed to the rod 86b and configured not to rotate even when the processing portion 83 rotates. This restricts the rotation of the container body 10 . Therefore, as the cutting blade 82 rotates, an arcuate cut portion 45 (see FIG. 3) is formed in the plastic member 40 at a position corresponding to the bottom portion 30 of the container body 10 . By forming the notch 45 at a position corresponding to the bottom 30 of the container body 10 in this way, it is possible to prevent the appearance of the composite container 10A from being spoiled. The processing portion 83 also includes two cutting blades 82 . Thereby, two notches 45 (see FIGS. 1 and 3) are formed in the plastic member 40 . Therefore, in the composite container 10A, the separation of the plastic member 40 can be made easier.

Further, when forming the cut portion 45, the cutting blade 82 rotates (rotates) about the rotation axis Y (see FIGS. 7 to 9 and FIG. 11A). That is, when the cutting blade 82 is rotated about the rotation axis X while pressing the cutting blade 82 against the plastic member 40, the cutting blade 82 pushed into the plastic member 40 rotates, A notch 45 is formed in the plastic member 40 . As a result, burrs and the like are less likely to occur in the notch portion 45, and wear of the notch blade 82 is suppressed.

Also, at this time, the adjustment member 84 rotates (rotates) about the rotation axis Y. As shown in FIG. That is, when the cutting blade 82 is rotated about the rotation axis X while pressing the cutting blade 82 against the plastic member 40, the adjustment member 84 itself that is in contact with the plastic member 40 rotates. As a result, the adjustment member 84 can prevent the plastic member 40 from being damaged at the position corresponding to the grounding portion 32 of the bottom portion 30 of the container body 10 .

Next, the user rotates the lever 83b to return the lever 83b to the initial position (see FIG. 14(a)).

Next, the user rotates the lever 86c to return the lever 86c to the initial position. As a result, a portion of the rod 86b is pulled into the body portion 86a of the driving portion 86, as shown in FIG. 14(b).

Then, the user removes the composite container 10A from the container holding portion 81 of the processing device 80 . Thus, as shown in FIG. 14(c), a composite container 10A having cut portions 45 is obtained.

After that, the content is filled into the composite container 10A through the mouth portion 11 of the composite container 10A.

By the way, when recycling the container body 10 , it is necessary to separate and remove the plastic member 40 of the composite container 10</b>A from the container body 10 . In this case, the plastic member 40 can be easily separated and removed from the container body 10 using the cut portion 45 as a starting point. Therefore, in the composite container 10A, the separation of the plastic member 40 can be facilitated.

As described above, according to the present embodiment, the processing device 80 is provided with the container holding portion 81 that holds the composite container 10A and the composite container 10A that is held by the container holding portion 81 so as to move forward and backward. , a processing portion 83 having a cutting blade 82 forming a cutting portion 45 penetrating the plastic member 40 of the composite container 10A; and an adjusting member 84 for adjusting the pushing amount of the cutting blade 82 with respect to. As a result, the cut portion 45 can be stably formed at a desired position of the composite container 10A, and when the cut portion 45 is formed in the plastic member 40 by the cutting blade 82, the container body 10 can be prevented from being damaged. In particular, since the processing device 80 is provided with an adjusting member 84, the pushing amount of the cutting blade 82 into the plastic member 40 can be adjusted in advance. Therefore, even if the cutting blade 82 is replaced due to wear or the like, the container body 10 is prevented from being damaged when the cutting portion 45 is formed in the plastic member 40 by the new cutting blade 82. can be effectively suppressed.

Further, according to this embodiment, the adjustment member 84 is arranged adjacent to the cutting edge 82 . As a result, the distance between the portion of the plastic member 40 with which the adjustment member 84 abuts and the portion where the notch 45 is formed can be reduced. Therefore, it is possible to reduce the difference between the pushing amount of the cutting blade 82 into the plastic member 40 and the folding amount assumed based on the previously adjusted projection amount of the cutting blade 82 from the outer surface 84b. . As a result, it is possible to effectively prevent the container body 10 from being damaged when the notch 45 is formed.

Further, according to the present embodiment, the processing portion 83 is provided to be rotatable about the rotation axis X extending along the directions of approaching and separating from the composite container 10A held by the container holding portion 81. there is Accordingly, by rotating the processing portion 83, the cut portion 45 can be formed in the plastic member 40 more reliably.

Further, according to the present embodiment, the cutting blade 82 has a circular shape and is provided rotatably with respect to the rotation axis Y orthogonal to the rotation axis X. , the cutting blade 82 itself rotates about the rotation axis Y. As a result, when forming the cut portion 45 , it is possible to suppress the occurrence of burrs and the like in the cut portion 45 and to suppress the wear of the cutting blade 82 .

Further, according to the present embodiment, the adjusting member 84 has a cylindrical shape and is provided rotatably about the rotation axis Y, and when the notch 45 is formed, the adjusting member 84 itself rotates. Rotate about the Y axis. As a result, when the notch 45 is formed, the adjusting member 84 can prevent the plastic member 40 from being scratched at the position corresponding to the grounding portion 32 of the bottom portion 30 of the container body 10 .

Moreover, according to the present embodiment, the processing device 80 further includes a rotation restricting portion 89 that restricts rotation of the container body 10 . As a result, the rotation of the container body 10 can be restricted, and by rotating the cutting blade 82, the cutting portion 45 can be easily formed in the plastic member 40 at a position corresponding to the bottom portion 30 of the container body 10. can be formed.

Furthermore, according to the present embodiment, the processing device 80 includes two adjusting members 84, the processing portion 83 includes two cutting blades 82, and each adjusting member 84 has a different cutting blade 82. placed adjacent to each other. As a result, the two cuts 45 can be easily formed in the plastic member 40 while effectively preventing the container body 10 from being damaged when the cuts 45 are formed.

In the above embodiment, the plastic member 40 around the notch 45 may be heated after the arc-shaped notch 45 is formed so that the plastic member 40 around the notch 45 shrinks. At this time, the plastic member 40 around the cut portion 45 may be heated using hot air such as a heat gun. As a heating method, steam, a heated jig, or a laser may be used in addition to hot air such as a heat gun or a dryer. In the case of steam, it is also conceivable to use a shrink tunnel when attaching a shrink label. Further, when the plastic member 40 around the notch 45 is heated, the periphery may be warmed to such an extent that the container is not deformed. In this case, by heating the plastic member 40 around the notch 45, the plastic member 40 around the notch 45 shrinks as shown in FIG. An opening 46 is formed. In addition, in FIG. 15, the cut portion 45 before the plastic member 40 shrinks is indicated by a virtual line (chain double-dashed line).

In the example shown in FIG. 15, the outline of the notch 45 has a pair of circular arc shapes recessed in directions away from each other when viewed from the bottom direction. As a result, when the plastic member 40 is separated from the container body 10, the edge of the cut 45 (portion A shown in FIG. 15) can be easily cracked. Therefore, a tear is formed at the end of the cut portion 45, and the plastic member 40 can be easily separated and removed from the container body 10 by using the tear as a tear line. Further, by contracting the plastic member 40 around the cuts 45 , the portions between the cuts 45 can be lifted from the container body 10 . This makes it easier for the user to grasp the portion between the plurality of notches 45, and the plastic member 40 can be easily separated from the container body 10 and removed. When the plastic member 40 around the notch 45 is shrunk by heating the plastic member 40 around the notch 45, the plastic member 40 having a shrinking action is used.

Further, in the above-described embodiment, an example in which the cutout portion 45 is formed in the plastic member 40 at a position corresponding to the bottom portion 30 of the container body 10 has been described. However, the present invention is not limited to this, and the cut portion 45 may be formed, for example, in the plastic member 40 at a position corresponding to the trunk portion 20 of the container body 10 . Also in this case, the plastic member 40 can be easily separated from the container body 10 and removed.

Further, in the above-described embodiment, an example in which the cut portion 45 is formed by rotating the cutting blade 82 has been described. However, the present invention is not limited to this, and the container body 10 may be rotated in the step of forming the cut portion 45 . In this case, in the processing device 80 , the container body 10 can be rotated about the rotation axis X by removing the rotation restricting portion 89 from the rod 86 b of the driving portion 86 . Also in this case, the cut portion 45 can be formed in the plastic member 40 .

Moreover, in the above embodiment, an example in which the processing portion 83 has two cutting edges 82 has been described. However, the present invention is not limited to this, and as shown in FIGS. 16 and 17, the processing portion 83 may have only one cutting edge 82. Also, in this case, as shown in FIG. 16, the processing device 80 may include two adjusting members 84, and one of the adjusting members 84 may be arranged adjacent to the cutting blade . Also in this case, since one adjusting member 84 is adjacent to the cutting edge 82, the distance between the portion where the adjusting member 84 abuts and the portion where the cut portion 45 is formed can be shortened. Therefore, it is possible to reduce the difference between the pushing amount of the cutting blade 82 into the plastic member 40 and the folding amount assumed based on the previously adjusted projection amount of the cutting blade 82 from the outer surface 84b. , it is possible to effectively prevent the container body 10 from being damaged when forming the notch 45 . The pushing amount of the cutting blade 82 into the plastic member 40 can be accurately adjusted. Further, as shown in FIG. 17, the processing device 80 may have only one adjusting member 84. In addition, as shown in FIG. In this case, it is possible to more effectively prevent the container body 10 from being scratched by the adjustment member 84 when the cut portion 45 is formed in the plastic member 40 by the cutting blade 82 . Further, in this case, the number of the second insertion holes 832 formed in the body portion 83a of the processed portion 83 may be one. Note that the processing portion 83 may include three or more cutting blades 82 .

Furthermore, in the above-described embodiment, in the composite container 10A in which the processing device 80 forms the cut portion 45, the bottom portion 30 of the container body 10 has a recess 31 located in the center and a grounding portion 32 provided around the recess 31. We have described an example having However, the shape is not limited to this, and as shown in FIGS. 18 to 20, the bottom portion 30 of the container body 10 may have a petaloid shape. In this case, the bottom portion 30 includes a central portion 131 (see FIGS. 19 and 20) located in the center and a plurality of (in this case, five) petaloids extending radially from the central portion 131 toward the peripheral edge portion 30b of the bottom portion 30. legs 132;

As shown in FIG. 19, the five petaloid legs 132 are arranged along the peripheral edge portion 30b of the bottom portion 30 at regular intervals in the circumferential direction. Although it is preferable to provide five or more petaloid legs 132 in order to stably erect the composite container 10A, the upper limit is preferably about nine in terms of moldability. In order to effectively prevent buckling, the number of petaloid legs 132 is preferably an odd number, more preferably five.

As shown in FIGS. 19 and 20, each petaloid leg 132 includes a ground contact portion 132a extending circumferentially, an inner inclined surface 132b extending upward from the ground contact portion 132a toward the central portion 131, and a ground contact portion. and an outer inclined surface 132c extending upward from 132a toward the peripheral portion 30b.

On the other hand, valleys 133 are formed between adjacent petaloid legs 132 . Each trough portion 133 has a curved surface extending upward from the central portion 131 toward the peripheral edge portion 30b. Each trough 133 constitutes a portion of a downwardly curved spherical surface in a cross section from the central portion 131 to the peripheral portion 30b (see FIG. 20). In this case, each valley 133 may consist of a portion of the dome-shaped curved surface.

In this case, as shown in FIGS. 19 and 20 , the notch 45 can be formed at a position corresponding to the central portion 131 .

(Second embodiment)
Next, a second embodiment of the present disclosure will be described with reference to FIGS. 21 to 25. FIG. The second embodiment shown in FIGS. 21 to 25 is different in that the cut portion 45 is formed by pressing the cutting blade 82 against the plastic member 40 when forming the cut portion 45 . Other configurations are substantially the same as those of the first embodiment shown in FIGS. In the second embodiment shown in FIGS. 21 to 25, the same parts as those in the first embodiment shown in FIGS. 1 to 14 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Construction of Composite Container First, an outline of a composite container 10A processed by the processing apparatus 80A according to the present embodiment will be described with reference to FIG.

In the present embodiment, as shown in FIG. 21 , a cut portion 45 is formed in the plastic member 40 at a position corresponding to the body portion 20 of the container body 10 so as to penetrate the plastic member 40 . In this way, the notch 45 is formed in the plastic member 40 at a position corresponding to the trunk portion 20 of the container body 10, so that the notch 45 can be made conspicuous and the user can easily grasp the notch. 45 can be easily recognized.

As shown in FIG. 21 , in the present embodiment, the notch 45 is formed in the vicinity of the neck 13 in the first portion 21 of the trunk 20 . Moreover, the cut portion 45 is formed in a linear shape. In this case, the notch 45 is formed by one notch linearly extending along the longitudinal direction of the container body 10 . The notch 45 is spaced apart from the upper end of the plastic member 40 (the end on the side of the mouth 11 ) and terminates in the middle of the position corresponding to the body 20 of the container body 10 .

The height H1 (the length along the vertical direction) of the notch 45 is preferably 7.0 mm or more and 30.0 mm or less. Since the height H1 of the notch 45 is 7.0 mm or more, the notch 45 can be conspicuous, and the user can easily recognize the notch 45 . Further, since the height H1 of the cut portion 45 is 7.0 mm or more, the user can easily separate and remove the plastic member 40 from the surface of the container body 10 using the cut portion 45 as a trigger. Further, by setting the height H1 of the notch 45 to 30.0 mm or less, it is possible to prevent the notch 45 from being too conspicuous. Therefore, deterioration of the design of the composite container 10A can be suppressed.

Construction of Processing Apparatus Next, the construction of a processing apparatus 80A according to the second embodiment will be described with reference to FIGS. 22 to 24. FIG.

As shown in FIG. 22 , the container holding portion 81 holds the container body 10 in an upright state so that the first portion 21 of the trunk portion 20 of the container body 10 faces the processing portion 83 . are doing. In this case, as shown in FIG. 23, the vicinity of the neck portion 13 (see FIG. 22) of the container body 10 is accommodated in the concave portion 81c of the first holding portion 81a of the container holding portion 81. As shown in FIG.

The processing portion 83 is configured to form the cut portion 45 in the plastic member 40 by pressing the cutting blade 82 against the plastic member 40 along the horizontal direction. The cutting blade 82 according to the present embodiment is a Thomson blade or a Vic blade used for a cutter or a punching die, a pinnacle blade produced by corrosion (etching) processing, a blade produced by sharpening them, or other blades produced by cutting. (Engraving blade) may be used.

As shown in FIGS. 22 to 24, the adjusting member 84 is attached to the tip of the body portion 83a of the processing portion 83. As shown in FIGS. The adjusting member 84 has a rectangular parallelepiped shape and is arranged adjacent to the cutting blade 82 . In this embodiment, the processing device 80A has two adjustment members 84, each of which is arranged adjacent to the cutting edge 82 respectively. As shown in FIGS. 23 and 24, each adjusting member 84 moves toward and away from the composite container 10A held by the container holding portion 81 (horizontal direction in FIGS. 23 and 24) and in both vertical directions. They are arranged on both sides of the cutting edge 82 in the orthogonal direction.

In this embodiment, the frame assembly 90 includes a first support member 93 , a height adjustment member 94 arranged on the first support member 93 , and a container holder mounting member arranged on the first support member 93 . It has a member 95 , a second support member 96 arranged on the height adjustment member 94 , and a base mounting member 97 arranged on the second support member 96 .

Among these, the first support member 93 is arranged on the floor surface of the work space. The planar shape of the first support member 93 is not particularly limited, and may be rectangular, U-shaped, or the like. Further, the first support member 93 may be composed of a single member, or may be composed by connecting a plurality of members. A mounting member 98 on which the container body 10 is mounted is mounted on the first support member 93 . The mounting member 98 is composed of a flat plate-shaped member. Note that the container body 10 may be placed directly on the floor surface of the work space.

The height adjustment member 94 is composed of a pair of quadrangular prism-shaped members, and serves to adjust the height of the processed portion 83 by adjusting the height of the base portion 85 . As a result, the processing portion 83 can form the cut portion 45 at an arbitrary location of the plastic member 40 provided in close contact with the outside of the container body 10 .

The container holding portion mounting member 95 is composed of a pair of rectangular prism-shaped members and serves to hold the second support member 96 arranged on the height adjusting member 94 and the container holding portion 81 . In the illustrated example, the second support member 96 is connected to the container holding portion mounting member 95, and the container holding portion 81 is mounted.

The second support member 96 is composed of a pair of square prism-shaped members, one end of each of which is arranged on the height adjustment member 94 and the other end of which is connected to the container holding portion mounting member 95 .

The base mounting member 97 is composed of a pair of quadrangular prism-shaped members, and is arranged on the second support member 96 so as to extend along the width direction of the second support member 96 . The base portion 85 is attached onto the base portion attachment member 97 . The base portion 85 is thus supported by the frame assembly 90 .

Method for Manufacturing Composite Container Next, a method for manufacturing the composite container 10A according to the present embodiment will be described with reference to FIGS. 25(a) to (d).

First, for example, the composite container 10A before the notch 45 is formed is manufactured by the method shown in FIGS. 12(a) to 12(f).

Next, the processing device 80A is used to form a cut portion 45 penetrating the plastic member 40 after the blow molding. In this case, the cutting edge 82 is pressed against the plastic member 40 to form the cut 45 . At this time, first, the processing device 80A is prepared. Next, as shown in FIG. 25(a), the composite container 10A before the cut portion 45 is formed is attached to the container holding portion 81 of the processing device 80A. At this time, the neck portion 13 of the container body 10 is accommodated in the recessed portion 81c (see FIG. 23) of the first holding portion 81a, and the second portion 22 of the body portion 20 of the container body 10 is held in the opening portion 81d of the second holding portion 81b. (See FIG. 23). In this case, the lever 86c of the driving portion 86 is at the initial position, and the rod 86b of the driving portion 86 is retracted into the body portion 86a.

Next, the user rotates the lever 86c from the initial position. As a result, as shown in FIG. 25(b), the rod 86b protrudes in a predetermined direction (leftward in FIG. 25(b)) from the body portion 86a of the driving portion 86, and the rod 86b assumes the advanced position. As a result, the cutting edge 82 of the processing portion 83 is pressed against the plastic member 40 at a position corresponding to the body portion 20 of the container body 10 . In this manner, the cutting blade 82 forms the cutting portion 45 in the plastic member 40 at a position corresponding to the body portion 20 of the container body 10 . In this way, the notch 45 is formed in the plastic member 40 at a position corresponding to the trunk portion 20 of the container body 10, so that the notch 45 can be made conspicuous, and the user can press the notch 45. easily recognizable.

At this time, the adjusting member 84 abuts on the plastic member 40 after blow molding, and the pushing amount of the cutting blade 82 into the plastic member 40 is adjusted. That is, when the cutting blade 82 is pressed against the plastic member 40 at a position corresponding to the trunk portion 20 of the container body 10 , the outer surface 84 b of the adjusting member 84 is pushed against the trunk portion 20 of the container body 10 in the plastic member 40 . It abuts on a position corresponding to the portion 20 (see FIG. 24). As a result, the pushing amount of the cutting blade 82 into the plastic member 40 is adjusted. By adjusting the amount of protrusion of the cutting blade 82 from the outer surface 84b in advance, the container body 10 is not damaged when the cutting blade 82 forms the cut portion 45 in the plastic member 40. Sticking can be suppressed.

Next, the user rotates the lever 86c to return the lever 86c to the initial position. As a result, the rod 86b is drawn into the body portion 86a of the driving portion 86, as shown in FIG. 25(c).

Then, the user removes the composite container 10A from the container holding portion 81 of the processing device 80A. Thus, as shown in FIG. 25(d), a composite container 10A having cut portions 45 is obtained.

As described above, in this embodiment as well, the processing portion 83 can stably form the cut portion 45 in the plastic member 40, and the cutting blade 82 can cut the plastic member 40. It is possible to prevent the container body 10 from being scratched when forming the cut portion 45 with the cut portion 45 . In addition, since the cutout portion 45 is formed in the plastic member 40 at a position corresponding to the body portion 20 of the container body 10, the cutout portion 45 can be made conspicuous and the user can easily remove the cutout portion 45. can recognize.

In addition, in the above-described embodiment, an example in which the cut portion 45 is formed in the vicinity of the neck portion 13 in the first portion 21 of the body portion 20 has been described. However, it is not limited to this. The cut portion 45 may be formed at any location. For example, the cut portion 45 may be formed in the second portion 22 of the trunk portion 20 near the bottom portion 30 .

Also in the above-described embodiment, the plastic member 40 around the cut portion 45 may be shrunk by heating the plastic member 40 around the cut portion 45 after the linear cut portion 45 is formed. . In this case, by heating the plastic member 40 around the cut 45, the plastic member 40 around the cut 45 shrinks as shown in FIG. 46A is formed. In the example shown in FIG. 26, the outline of the cutout 45 has an arcuate shape that is recessed in a direction away from each other when viewed from the front. As a result, when the plastic member 40 is separated from the container body 10, the upper and lower ends of the notch 45 can be easily cracked. Therefore, a tear is formed at the upper end or the lower end of the cut portion 45, and the plastic member 40 can be easily separated and removed from the container body 10 by using the tear as a tear line.

Moreover, in the above embodiment, an example in which the cut portion 45 has a linear shape has been described. However, not limited to this, the cut portion 45 may have an arc shape. At this time, by using the arc-shaped cutting blade 82, the cut portion 45 having a circular arc shape can be formed. Also, for example, a plurality of notches 45 may be formed. The multiple cuts 45 may be formed by multiple cutting blades 82 . This makes it possible to facilitate the process of forming the notch 45 . A plurality of cuts 45 may be formed by pressing a single cutting edge 82 against the plastic member 40 a plurality of times.

In addition, as shown in FIG. 27, the cut portion 45 may include a plurality of through holes 47 extending in the vertical direction. In this case, for example, as shown in FIG. 27, the notch 45 may be formed in the vicinity of the neck 13 in the first portion 21 of the body 20 . Although not shown, the notch 45 may be formed in the second portion 22 of the body 20 near the bottom 30 . Such a cut 45 can be formed, for example, by using a sword-shaped cutting blade 82 that includes multiple blades. Further, in this case, the height H2 (the length along the vertical direction) of the region where the plurality of through holes 47 are present may be 7.0 mm or more and 30.0 mm or less. Since the height H2 of the region where the plurality of through holes 47 exist is 7.0 mm or more, the plurality of through holes 47 can be conspicuous, and the user can easily recognize the notch 45. . In addition, since the height H2 of the region where the plurality of through holes 47 are present is 7.0 mm or more, the user can easily separate the plastic member 40 from the surface of the container body 10 using the notch 45 as a trigger. can be removed. Moreover, since the height H2 of the region where the plurality of through holes 47 are present is 30.0 mm or less, it is possible to prevent the plurality of through holes 47 from being too conspicuous. Therefore, deterioration of the design of the composite container 10A can be suppressed.

Further, in the above embodiment, an example in which the cut portion 45 is formed by pressing the cutting blade 82 against the plastic member 40 has been described. That is, an example in which the cut portion 45 is formed by pressing the cutting blade 82 against the plastic member 40 along the horizontal direction has been described. However, not limited to this, the cut portion 45 may be formed by vertically moving the cutting blade 82 with respect to the plastic member 40 .

It is also possible to appropriately combine a plurality of constituent elements disclosed in the above embodiments and modifications as necessary. Alternatively, some components may be deleted from all the components shown in each of the above embodiments and modifications.

REFERENCE SIGNS LIST 10 container body 10A composite container 10a preform 20 trunk 30 bottom 40, 40a plastic member 45 notch 50 blow mold 80 processing device 80A processing device 81 container holder 82 cutting blade 83 processing unit 84 adjustment member 89 rotation regulatory department

Claims (12)

a container holding part for holding a composite container having a container body and a plastic member provided in close contact with the outside of the container body;
a processing unit that is provided so as to be able to move forward and backward with respect to the composite container held by the container holding unit, and that has a cutting blade that forms a cutting portion that penetrates the plastic member of the composite container;
an adjustment member that is attached to the processing unit and adjusts the pushing amount of the cutting blade with respect to the plastic member by coming into contact with the plastic member ,
The processing unit is provided rotatably about a first rotation axis extending along a direction toward and away from the composite container held by the container holding unit,
The cutting blade has a circular shape and is provided rotatably with respect to a second rotation axis orthogonal to the first rotation axis,
The processing device , wherein the cutting blade itself rotates about the second rotation axis when forming the cutting portion . 2. The processing apparatus according to claim 1, wherein said adjustment member is arranged adjacent to said cutting edge. The adjustment member has a cylindrical shape and is rotatable about the second rotation axis, and the adjustment member itself rotates about the second rotation axis when the cut portion is formed. 3. The processing apparatus according to claim 1 or 2 , wherein The processing apparatus according to any one of claims 1 to 3 , further comprising a rotation restricting portion that restricts rotation of the container body. comprising two said adjustment members,
The processing unit includes two cutting blades,
5. The processing apparatus according to any one of claims 1 to 4 , wherein each of said adjustment members is arranged adjacent to each different said cutting edge. comprising two said adjustment members,
5. The processing device according to any one of claims 1 to 4 , wherein one of said adjustment members is arranged adjacent to said cutting edge. In the method for manufacturing a composite container,
preparing a preform;
providing a plastic member outside the preform;
Blow molding is performed on the preform and the plastic member using a blow molding die to integrally expand the preform and the plastic member, and a container body corresponding to the preform and the forming a plastic member provided in close contact with the outside of the container body;
A step of forming a cut portion penetrating the plastic member after blow molding using the processing apparatus according to any one of claims 1 to 6 ,
A manufacturing method of a composite container, wherein in the step of forming the cut portion, the adjusting member is brought into contact with the plastic member after blow molding to adjust the pushing amount of the cutting blade with respect to the plastic member. 8. The method according to claim 7 , wherein in the step of forming the cut portion, the cut portion is formed by rotating the cut blade or the container body while pressing the cut blade against the plastic member. A method for manufacturing a composite container. 8. The method of manufacturing a composite container according to claim 7 , wherein in the step of forming the cut portion, the cut portion is formed by pressing the cutting blade against the plastic member. The composite container according to any one of claims 7 to 9 , wherein in the step of forming the cut portion, the cut portion is formed in the plastic member at a position corresponding to the bottom portion of the container body. manufacturing method. 10. The composite according to any one of claims 7 to 9 , wherein in the step of forming the cut portion, the cut portion is formed in the plastic member at a position corresponding to the trunk portion of the container body. A method of manufacturing a container. The method for manufacturing a composite container according to any one of claims 7 to 11 , further comprising a step of shrinking the plastic member around the cut by heating the plastic member around the cut.

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