WO2017145770A1 - Récipient composite et son procédé de fabrication - Google Patents

Récipient composite et son procédé de fabrication Download PDF

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Publication number
WO2017145770A1
WO2017145770A1 PCT/JP2017/004689 JP2017004689W WO2017145770A1 WO 2017145770 A1 WO2017145770 A1 WO 2017145770A1 JP 2017004689 W JP2017004689 W JP 2017004689W WO 2017145770 A1 WO2017145770 A1 WO 2017145770A1
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Prior art keywords
container
resin
layer
synthetic resin
functional resin
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PCT/JP2017/004689
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English (en)
Japanese (ja)
Inventor
穣 浅野
利房 東
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東洋製罐グループホールディングス株式会社
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Publication of WO2017145770A1 publication Critical patent/WO2017145770A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings

Definitions

  • the present invention relates to a composite container having a multilayer structure composed of at least two synthetic resin members. More specifically, the functional resin contained in the synthetic resin is contained in the container without impairing the sealing strength of the container.
  • the present invention relates to a composite container that exists uniformly throughout and capable of efficiently expressing a function derived from a functional resin, and a method for producing the same.
  • an overmold material is overmolded on the top of the container, the overmold material is adapted to the outer surface of the container, and is separably fixed (Patent Document 1), or a multilayer structure composed of a base material layer and a coating layer
  • Patent Document 2 A method (Patent Document 2) and the like have been proposed.
  • the core layer is made of functional resin and the shell layer is molded by compressing a molten resin mass made of base resin.
  • the extension of the layer made of the functional resin may be insufficient in the height direction of the container. Cannot fully exhibit the function of the functional resin.
  • the functional resin extends excessively and the layer made of the functional resin is folded back at the flange portion of the cup-type container, the functional resin exists in the vicinity of the heat seal surface, and the heat sealability is impaired. Cause problems.
  • the functional resin of the intermediate layer is uniformly placed in a position where the function of the functional resin is fully exhibited and the heat sealability is not impaired. It is difficult to form. Further, even in the case of overmolding, it is difficult to ensure heat sealability by completely encapsulating the intermediate layer with another resin and securing the function of the functional resin while forming the flange portion as a single layer.
  • an object of the present invention is to provide a container having a multilayer structure in which an intermediate layer made of a functional resin exists only at a desired position, and a method for manufacturing such a container by overmolding.
  • a composite container composed of at least two synthetic resin members, wherein at least one of the synthetic resin members has a multilayer structure in which a functional resin layer is included in a synthetic resin at a bottom portion and a trunk portion.
  • a composite container characterized in that at least the tip of the barrel is bonded to the other synthetic resin member, and the functional resin layer is present at the tip of the barrel located in the vicinity of the bonding surface.
  • the tip of the functional resin layer is folded, 2.
  • One of the synthetic resin member having a multilayer structure containing the functional resin and the other synthetic resin member is an inner container, and the other is an outer container positioned outside the inner container, 3.
  • the two synthetic resin members are bonded to each other surface connected to the bonding surface; 4).
  • the other synthetic resin member is a container having a bottom portion, a trunk portion and a flange portion; 5.
  • a container having a multilayer structure containing the functional resin is an outer container, a container having the flange portion is an inner container, and a tip of the outer container is joined to the lower surface of the flange portion; 6).
  • the other synthetic resin member is a ring-shaped flange portion; Is preferred.
  • a container having a multilayer structure in which a functional resin layer is included in a synthetic resin is compression molded or injected on an inner surface or an outer surface of a bottom portion and a trunk portion of a container having a bottom portion, a trunk portion, and a flange portion.
  • a method for producing a composite container is provided.
  • the part that requires the function of the functional resin and the part that other functions are impaired due to the presence or absence of the functional resin are configured as separate members.
  • each function can be sufficiently exhibited, and the precise position control of the layer made of the functional resin is not required, and the productivity is improved. That is, in a member having an intermediate layer made of a functional resin, a functional resin layer such as a gas barrier resin can be uniformly formed from the bottom of the container to the vicinity of the upper end of the barrel, and the gas barrier property and the like can be formed. Can be used effectively.
  • the member having the flange portion has a single layer structure of a synthetic resin that does not contain a functional resin and has excellent heat sealability, excellent heat sealability can be obtained. Further, the composite container of the present invention has excellent mechanical strength as compared with a case where a multilayer container having a similar layer structure is formed by ordinary injection molding or compression molding.
  • the composite container of the present invention at least the front end of the body portion of the synthetic resin member containing the functional resin is joined to the other synthetic resin member.
  • the two synthetic resin members are prevented from being easily separated.
  • the composite container composed of the container described later and the ring-shaped member constituting only the flange portion the composite member is separated. Is prevented.
  • the composite container having the above-described effects can be continuously formed, and the productivity is excellent.
  • (A) is a sectional side view
  • (B) is a figure which expands and shows the X part of (A). It is a figure which expands and shows the other example of X part of the composite container shown in FIG.
  • (A) is a sectional side view
  • (B) is a figure which expands and shows the Y part of (A).
  • (A) is a sectional side view
  • (B) is a figure which expands and shows the Z part of (A).
  • FIG. 2 is a cross-sectional photograph of a flange portion of a multilayer cup container molded in Example 1.
  • FIG. 4 is a cross-sectional photograph of a flange portion of a multilayer cup container molded in Example 2.
  • the composite container of the present invention is a composite container composed of at least two synthetic resin members, and at least one of the synthetic resin members has a multilayer structure in which the functional resin layer is included in the synthetic resin at the bottom portion and the trunk portion. It is an important feature that at least the tip of the barrel is joined to the other synthetic resin member, and the functional resin layer is present at the tip of the barrel located in the vicinity of the joint surface.
  • a synthetic resin member which comprises the composite container of this invention the example shown below can be given and this invention is demonstrated based on this aspect.
  • FIG. 1 shows a combination of an outer container 1 having a multilayer structure having inner and outer layers made of thermoplastic resin and an intermediate layer made of a functional resin layer, and an inner container 10 having a single layer structure made of a thermoplastic resin having a flange portion.
  • the outer container 1 includes a bottom part 2 and a body part 3, and an intermediate layer 4 is formed over the entire bottom part 2 and body part 3.
  • the inner container 10 includes a bottom part 11, a body part 12 and a flange part 13.
  • the inner surfaces of the bottom 2 and the body 3 of the outer container 1 are in close contact with the bottom 11 and the body 12 of the inner container 10, and the body tip 2 a of the outer container 1 contacts the lower surface 13 a of the flange 13 of the inner container 10.
  • the outer container 1 is tightly joined to the inner container 10 from the body tip 2a of the outer container to the inner surface of the body and the inner surface of the bottom.
  • the functional resin extends to the vicinity of the front end of the body portion in order to fully exhibit the functions of the functional resin such as gas barrier properties.
  • the multilayer container is surely formed with a multilayer structure up to the front end of the trunk, and a folded portion of a layer made of a functional resin is formed at the front end of the trunk.
  • FIG. 2 is a view showing another aspect of the portion X in the aspect of FIG. 1, and an annular recess 14 is formed on the lower surface of the flange portion 13 of the inner container 10 so that the body tip 2 a of the outer container 1 can be fitted.
  • the outer container 1 and the inner container 10 are more firmly joined.
  • the barrel tip 2a of the outer container 1 is formed straight, and the barrel tip 2a is directly fitted in the recess 14.
  • the annular recess 14 is formed to be larger than the thickness of the body portion 2 of the outer container 1, and the body portion tip 2a of the outer container 1 is bent outward.
  • middle layer 4 which consists of functional resin is also located in a flange part, functions, such as gas barrier property, can be exhibited reliably.
  • FIG. 3 shows an embodiment comprising an outer container 1 having a single layer structure of a thermoplastic resin having a flange portion, and an inner container 10 having a multilayer structure having an inner layer and an outer layer made of a thermoplastic resin and an intermediate layer made of a functional resin layer. It is shown.
  • the outer container 1 is formed with a bottom portion 2, a body portion 3, a flange portion 5, and an annular protrusion 6 that protrudes from the flange portion 5 toward the opening.
  • the inner container 10 includes a bottom part 11 and a body part 12 on which an intermediate layer 15 made of a functional resin is formed, and the front end 12a of the body part 12 of the inner container contacts the lower surface 6a of the annular protrusion 6 of the outer container 1.
  • FIG. 4 shows an embodiment comprising a multilayer container having inner and outer layers made of a thermoplastic resin and a functional resin as an intermediate layer, and a ring member having a single layer structure constituting only the flange portion.
  • the multilayer container 20 includes a bottom portion 21 and a body portion 22 on which an intermediate layer 23 made of a functional resin is formed, and the front end 22 of the body portion is on the inner peripheral side of the lower surface 30a of the ring-shaped member 30 that forms the flange portion. It is joined.
  • the joining surfaces are only the body tip 22a of the multilayer container 20 and the lower surface 30a of the ring-shaped member 30, it is preferable that the trunk of the multilayer container 20 of the ring-shaped member as shown in FIG.
  • the composite container of this invention was demonstrated in the example of the cup-shaped container with a flange, the composite container of this invention is not limited to this, The same effect is acquired also in a bottle-shaped container as well as a tray-shaped container. Can do.
  • an outer member having a multilayer structure can be provided in a lower part of the mouth part of the bottle-shaped container having a single-layer structure.
  • functionalities such as gas barrier properties are effectively exhibited at the trunk and bottom.
  • a container having a multilayer structure and a mouth part such as a spout may be used as a combination of the container and other members.
  • thermoplastic resin capable of injection molding or compression molding
  • a thermoplastic resin capable of injection molding or compression molding
  • various resins such as polyolefin resins, thermoplastic polyester resins, polycarbonate resins, and polyacrylonitrile resins.
  • polyolefin resins and thermoplastic polyester resins can be preferably used.
  • the polyolefin resin include polyethylene (PE) such as low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE), and linear ultra low density polyethylene (LVLDPE).
  • PE polyethylene
  • LDPE low density polyethylene
  • MDPE medium density polyethylene
  • HDPE high density polyethylene
  • LLDPE linear low density polyethylene
  • LVLDPE linear ultra low density polyethylene
  • the polyolefin resin preferably has a melt flow rate (MFR) in the range of 0.1 to 30 g / 10 min from the viewpoint of extrudability.
  • thermoplastic polyester resin examples include thermoplastic polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, and blends of these polyesters with polycarbonate, arylate resin, and the like.
  • ester repeating units generally 70 mol% or more, particularly 80 mol% or more
  • the glass transition point (Tg) is 50 to 90 ° C., particularly 55 to 80 ° C.
  • PET polyethylene terephthalate
  • Tm melting point
  • homopolyethylene terephthalate is optimal as the PET-based polyester, but a copolyester having an ethylene terephthalate unit content within the above range can also be suitably used.
  • dibasic acids other than terephthalic acid include aromatic dicarboxylic acids such as isophthalic acid, phthalic acid and naphthalenedicarboxylic acid; alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid; succinic acid, adipic acid, and sebatin.
  • diol component other than ethylene glycol examples include propylene glycol, 1,4-butanediol, diethylene glycol, an aliphatic dicarboxylic acid such as acid, dodecanedioic acid, and the like.
  • 1,6-hexylene glycol, cyclohexanedimethanol, ethylene oxide adduct of bisphenol A, and the like can be mentioned.
  • Conventionally known additives for resins such as antioxidants, heat stabilizers, lubricants and the like can be blended with the base resin in a known formulation.
  • the functional resin used in the present invention means a resin different from the above-described base resin used for imparting some performance to the multilayer container of the present invention.
  • a gas barrier resin It means a resin excellent in water vapor barrier properties such as an oxygen-absorbing resin and a cyclic olefin resin, and a resin excellent in rigidity and heat resistance such as a liquid crystal polymer.
  • gas barrier resin examples include an ethylene-vinyl alcohol copolymer.
  • a saponified copolymer obtained by saponifying the saponification degree so as to have a saponification degree of 96% or more, particularly 99 mol% or more is preferred.
  • the ethylene-vinyl alcohol copolymer (saponified ethylene-vinyl acetate copolymer) should have a molecular weight sufficient to form a film, and generally has a [phenol / water] weight ratio of 85/15. It is desirable to have an intrinsic viscosity of 0.01 dl / g or more, particularly 0.05 dl / g or more, measured at 30 ° C. in a mixed solvent.
  • gas barrier resins other than ethylene-vinyl alcohol copolymer include, for example, nylon 6, nylon 6,6, nylon 6 / 6,6 copolymer, metaxylylene adipamide (MXD6), nylon Polyamides such as 6.10, nylon 11, nylon 12, and nylon 13 can be mentioned.
  • MXD6 metaxylylene adipamide
  • nylon Polyamides such as 6.10, nylon 11, nylon 12, and nylon 13 can be mentioned.
  • these polyamides those having the number of amide groups per 100 carbon atoms in the range of 5 to 50, particularly 6 to 20 are preferable.
  • polyamides should also have a molecular weight sufficient to form a film.
  • the relative viscosity measured at 30 ° C. is 1.1 or more, particularly 1.5 or more. It is desirable to be.
  • a polyamide resin having a terminal amino group concentration of 40 eq / 10 6 g or more is desirable because there is no oxidative deterioration during oxygen absorption.
  • oxygen-absorbing resin examples include a resin composition comprising at least an oxidizing organic component and a transition metal catalyst (oxidation catalyst).
  • the resin composition having an oxidizing organic component and a transition metal catalyst may be composed only of the oxidizing organic component and the transition metal catalyst, but may of course contain other resins.
  • the resin that can be used in combination with the oxidizing organic component and the transition metal catalyst include the above-mentioned olefin resins and gas barrier resins, and in particular, ethylene vinyl alcohol copolymers and polyamide resins (especially terminal amino groups). It is preferable to use a xylylene group-containing polyamide resin having a concentration of 40 eq / 10 6 g or more.
  • the oxidizing organic component examples include an ethylenically unsaturated group-containing polymer.
  • This polymer has a carbon-carbon double bond, and this methylene bond adjacent to the double bond portion and particularly the double bond portion is easily oxidized by oxygen, whereby oxygen is trapped.
  • Such an ethylenically unsaturated group-containing polymer is derived from, for example, polyene as a monomer, and is a random copolymer of a polyene homopolymer or a combination of two or more of the above polyenes or other monomers.
  • a polymer, a block copolymer, etc. can be used as an oxidizing polymer.
  • polymers derived from polyene polybutadiene (BR), polyisoprene (IR), natural rubber, nitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), chloroprene rubber, ethylene-propylene-diene rubber (EPDM) ) And the like are preferred, but of course not limited thereto.
  • a polymer that is easily oxidized such as polypropylene, an ethylene / propylene copolymer, or a polymetaxylylene having a terminal amino group concentration of less than 40 eq / 10 6 g.
  • Range adipamide and the like can also be used as the oxidizing organic component. From the standpoint of moldability and the like, it is preferable that the above-mentioned oxidizing polymer or copolymer thereof has a viscosity at 40 ° C. in the range of 1 to 200 Pa ⁇ s.
  • These polyene polymers are preferably acid-modified polyene polymers into which a carboxylic acid group, a carboxylic anhydride group, or a hydroxyl group has been introduced.
  • the oxidizing organic component comprising these oxidizing polymers or copolymers thereof is preferably contained in the oxygen-absorbing resin in a proportion of 0.01 to 10% by weight.
  • Transition metal-based catalyst As the transition metal-based catalyst, Group VIII metals of the periodic table such as iron, cobalt, nickel and the like are suitable, but also Group I metals such as copper and silver, tin, titanium, It may be a Group IV metal such as zirconium, a Group V metal such as vanadium, a Group VI metal such as chromium, a Group VII metal such as manganese, or the like.
  • the transition metal catalyst is generally used in the form of a low-valent inorganic salt, organic salt or complex salt of the transition metal.
  • inorganic salts include halides such as chlorides, sulfur oxysalts such as sulfates, nitrogen oxysalts such as nitrates, phosphorus oxysalts such as phosphates, and silicates.
  • organic salt include carboxylate, sulfonate, phosphonate and the like.
  • transition metal complexes include complexes with ⁇ -diketone or ⁇ -keto acid ester.
  • the transition metal catalyst is preferably in the range of 100 to 3000 ppm as the concentration of transition metal atoms (weight concentration basis) in the oxygen-absorbing resin.
  • Examples of the functional resin that can be suitably used in the present invention include cyclic olefin resins and liquid crystal polymers in addition to the gas barrier resin and the oxygen-absorbing resin. Cyclic olefin resins are generally superior in heat resistance, moisture resistance, water vapor barrier properties, and other properties compared to general-purpose thermoplastic resins. It becomes possible to grant.
  • cyclic olefin a conventionally known cyclic olefin that has been conventionally used for packaging containers and the like can be used, and in general, an alicyclic hydrocarbon compound having an ethylenically unsaturated bond and a bicyclo ring, so-called norbornene type
  • polymerizing a monomer by a well-known ring-opening polymerization method and hydrogenating can be mentioned.
  • cyclic olefin resin the copolymer of an olefin and a cyclic olefin other than the homopolymer of a cyclic olefin can be used.
  • Ethylene is preferred as the olefin from which an amorphous or low crystalline copolymer (COC) of olefin and cyclic olefin is derived, but propylene, 1-butene, 1-pentene, 1-hexene, 1
  • An ⁇ -olefin having 3 to 20 carbon atoms such as octene, 3-methyl 1-pentene, 1-decene and the like can be used alone or in combination with ethylene.
  • Liquid crystal polymers are generally superior in properties such as rigidity, heat resistance, and barrier properties compared to general-purpose thermoplastic resins, and by using such liquid crystal polymers, it is possible to impart excellent properties to a multilayer container.
  • a conventionally known lyotropic liquid crystal polymer, thermotropic liquid crystal polymer, or the like, or a polymer exhibiting liquid crystallinity in a molten state can be used. Specifically, (b) obtained by reacting aromatic dicarboxylic acid, aromatic diol and aromatic hydroxycarboxylic acid, (b) obtained by reacting different aromatic hydroxycarboxylic acids with each other.
  • an adhesive layer may be interposed between the base resin layer and the functional resin layer.
  • the adhesive resin include acid-modified polypropylene, acid-modified high-density polyethylene, acid-modified low-density polyethylene, and acid-modified polyolefin such as acid-modified ethylene-vinyl acetate copolymer, but of course are not limited thereto. .
  • the multilayer structure of one container may be a two-kind / three-layer structure in which the base resin described above is used as an inner and outer layer and a functional resin as an intermediate layer, or a functional resin.
  • Conventionally known layer configurations such as a three-kind five-layer multilayer structure including two layers of a gas barrier layer and an oxygen absorbing layer can be adopted.
  • the layer structure suitable for the composite container of the present invention is as follows.
  • Inner single layer container PET, outer multilayer container: inner layer PET / intermediate layer gas barrier layer / outer layer PET
  • inner single layer container PET, outer multilayer container: inner layer PET / intermediate layer oxygen-absorbing gas barrier layer / outer layer PET
  • Outer single layer container PE, inner multilayer container: inner layer PE / intermediate layer gas barrier layer / outer layer PE
  • Outer single layer container PP, inner multilayer container: inner layer PP / intermediate layer gas barrier layer / outer layer PP
  • the composite container of the present invention can be manufactured by various methods as long as it has the above-described configuration.
  • a container having a multilayer structure in which a functional resin is encapsulated in a synthetic resin is compressed in a single-layer container formed in advance. It is desirable to manufacture by overmolding by molding or injection molding, or in the reverse order, that is, by first forming the multilayer container and overmolding the single-layer container.
  • 6 shows a single layer container (inner container 1) having a bottom part, a body part and a flange part shown in FIG. 1, and a multilayer container (outer container) having a multilayer structure in which a functional resin layer is included in a synthetic resin.
  • the strand 50 extruded from the extruder 40 is a strand in which the functional resin 52 is included in the base resin 51 at intervals, and a portion of the strand made of only the base resin is cut off.
  • the single-layer molten resin lump 53 is supplied to the compression molding machine and compressed, whereby the flanged single-layer container (inner container) 10 is formed.
  • the portion containing the functional resin 52 is cut off on the outer surface of the bottom of the single-layer container 10, and the multilayer molten resin mass 54 is supplied and compressed so that the front end of the trunk is positioned on the lower surface of the flange portion.
  • a multilayer container (outer container) 1 is formed, and the composite container of the present invention shown in FIG. 1 is completed.
  • the inner container has a multilayer structure like the composite container shown in FIG. 3, the outer container is manufactured first, and the multilayer molten resin mass is supplied to the bottom inner surface of the outer container and compressed, Can be molded.
  • the functional resin layer extends to the end of the molten resin that is being extended.
  • a folded portion of the functional resin layer is formed at the front end of the body of the multilayer container.
  • both the single layer container and the multilayer container were formed by compression molding.
  • the multilayer molten resin lump was supplied to the single layer container previously molded by injection molding in the same manner as described above to perform multilayer molding.
  • the container can be molded to form the composite container of the present invention, or a single-layer container molded by injection molding is introduced into an injection mold, and a multilayer container is molded into this by simultaneous injection method or sequential injection method You can also.
  • a composite container comprising a combination of a ring-shaped member and a multi-layer container shown in FIG. 4
  • a ring-shaped member separately formed by compression molding or injection molding or the like is placed in a mold, and then compression molding or injection is performed.
  • a single layer preform is formed by injection molding or compression molding, and a multilayer structure coating is formed by compression molding or injection molding on the lower part of the mouth of the preform. This can also be formed by biaxial stretch blow molding.
  • Example 1 In Example 1, the resin is melted by an extruder, the single layer structure molten resin is supplied to the mold and compression molded into the single layer structure inner cup container, and then the single layer structure inner cup container and the multilayer structure molten resin are multilayered.
  • a multi-layer cup container was formed by overmolding by supplying it to a mold for forming the outer cup container and compressing it.
  • the single-layer inner cup container is made of random PP (Prime Polymer J-2021GRP), but is dry blended with 3% by weight of white color masterbatch Sumika Color SPPM-7A2386 for experimental differentiation from the outer container. Was molded.
  • Multi-layer outer cup container consists of random PP (primary polymer J-2021GRP) 90wt%, adhesive resin (Mitsui Chemicals Admer QF551) 5wt%, barrier resin (Kuraray Eval F104B) 5wt%, PP / adhesive It is a structure of 3 types and 5 layers of functional resin / barrier resin / adhesive resin / PP. A cross-sectional photograph of the flange portion of the molded multilayer cup container is shown in FIG.
  • Example 2 In Example 2, the resin is melted by an extruder, the multilayer structure molten resin is supplied to the mold and compression molded into the multilayer structure inner cup container, and then the multilayer structure inner cup container and the single layer structure molten resin are formed into a single layer structure. It was supplied to a mold for forming the outer cup container and overmolded by compression molding to form a multilayer cup container.
  • Multi-layer inner cup container is made of random PP (primary polymer J-2021GRP) 90 wt%, adhesive resin (Mitsui Chemicals Admer QF551) 5 wt%, barrier resin (Kuraray Eval F104B) 5 wt%, PP / adhesive It is a structure of 3 types and 5 layers of functional resin / barrier resin / adhesive resin / PP.
  • Single-layer outer cup container is made of random PP (Prime Polymer J-2021GRP), but 3% dry blended with white color masterbatch Sumika Color SPPM-7A2386 to distinguish experimentally from the inner container. It was used. A cross-sectional photograph of the flange portion of the formed multilayer cup container is shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un récipient composite qui comprend au moins deux éléments en résine synthétique. Dans les parties de fond et de tronc du récipient, au moins un des éléments en résine synthétique comporte une structure multicouche dans laquelle une couche de résine fonctionnelle est enfermée dans une résine synthétique. Au moins la pointe de la partie de tronc est reliée à un autre élément en résine synthétique, et la couche de résine fonctionnelle est présente au niveau de la pointe de partie de tronc au voisinage de la surface reliée. Par conséquent, la résine fonctionnelle enfermée dans la résine synthétique est présente de manière uniforme sur la totalité du récipient sans aucune perte de pouvoir d'étanchéité du récipient, et la fonction dérivée de la résine fonctionnelle peut être obtenue efficacement.
PCT/JP2017/004689 2016-02-24 2017-02-09 Récipient composite et son procédé de fabrication WO2017145770A1 (fr)

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JP2016033021A JP6880553B2 (ja) 2016-02-24 2016-02-24 複合容器及びその製造方法
JP2016-033021 2016-02-24

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WO2017145770A1 true WO2017145770A1 (fr) 2017-08-31

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JP7379865B2 (ja) * 2019-05-21 2023-11-15 東洋製罐グループホールディングス株式会社 複合容器及びその製造方法

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JPH03254932A (ja) * 1990-03-05 1991-11-13 Yooken Syst:Kk 複合容器
JPH059245B2 (fr) * 1988-09-05 1993-02-04 Sumitomo Bakelite Co
JPH0976380A (ja) * 1995-09-19 1997-03-25 Dainippon Printing Co Ltd ガスバリヤー性容器及びその製造方法
JP2000248130A (ja) * 1999-03-04 2000-09-12 Kuraray Co Ltd 注ぎ口が装着されている包装容器
JP2003136657A (ja) * 2001-11-01 2003-05-14 Kureha Chem Ind Co Ltd 多層容器及びその製造方法
JP2003291990A (ja) * 2002-03-29 2003-10-15 Toyo Seikan Kaisha Ltd 容器用注出部材及び該部材が一体的に装着された容器
JP2004511358A (ja) * 2000-09-05 2004-04-15 アドバンスド　プラスティックス　テクノロジーズ　リミテッド リサイクル材料を使用するバリア特性を有する多層の容器およびプリフォーム
JP2005231346A (ja) * 2003-12-22 2005-09-02 Pepsico Inc 固体状態のないｒｐｅｔの環境延伸亀裂抵抗を改善する方法
JP2012006402A (ja) * 2004-04-16 2012-01-12 Concentrate Manufacturing Co Of Ireland 単層物および多層物、ならびに、それらの物を製造する押出し成型方法
JP2014534915A (ja) * 2011-10-21 2014-12-25 コルテック，インコーポレーテッド 非対称多層射出成形製品及び射出方法
JP2015128858A (ja) * 2014-01-07 2015-07-16 大日本印刷株式会社 ブロー成形方法、複合プリフォーム、複合容器、内側ラベル部材およびプラスチック製部材

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Publication number Priority date Publication date Assignee Title
JPS57166512U (fr) * 1981-04-09 1982-10-20
JPH059245B2 (fr) * 1988-09-05 1993-02-04 Sumitomo Bakelite Co
JPH03254932A (ja) * 1990-03-05 1991-11-13 Yooken Syst:Kk 複合容器
JPH0976380A (ja) * 1995-09-19 1997-03-25 Dainippon Printing Co Ltd ガスバリヤー性容器及びその製造方法
JP2000248130A (ja) * 1999-03-04 2000-09-12 Kuraray Co Ltd 注ぎ口が装着されている包装容器
JP2004511358A (ja) * 2000-09-05 2004-04-15 アドバンスド　プラスティックス　テクノロジーズ　リミテッド リサイクル材料を使用するバリア特性を有する多層の容器およびプリフォーム
JP2003136657A (ja) * 2001-11-01 2003-05-14 Kureha Chem Ind Co Ltd 多層容器及びその製造方法
JP2003291990A (ja) * 2002-03-29 2003-10-15 Toyo Seikan Kaisha Ltd 容器用注出部材及び該部材が一体的に装着された容器
JP2005231346A (ja) * 2003-12-22 2005-09-02 Pepsico Inc 固体状態のないｒｐｅｔの環境延伸亀裂抵抗を改善する方法
JP2012006402A (ja) * 2004-04-16 2012-01-12 Concentrate Manufacturing Co Of Ireland 単層物および多層物、ならびに、それらの物を製造する押出し成型方法
JP2014534915A (ja) * 2011-10-21 2014-12-25 コルテック，インコーポレーテッド 非対称多層射出成形製品及び射出方法
JP2015128858A (ja) * 2014-01-07 2015-07-16 大日本印刷株式会社 ブロー成形方法、複合プリフォーム、複合容器、内側ラベル部材およびプラスチック製部材

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