WO2006134652A1 - 酸素吸収性樹脂組成物ならびにこれを用いた酸素吸収性容器キャップおよび酸素吸収性容器栓部 - Google Patents
酸素吸収性樹脂組成物ならびにこれを用いた酸素吸収性容器キャップおよび酸素吸収性容器栓部 Download PDFInfo
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- WO2006134652A1 WO2006134652A1 PCT/JP2005/010973 JP2005010973W WO2006134652A1 WO 2006134652 A1 WO2006134652 A1 WO 2006134652A1 JP 2005010973 W JP2005010973 W JP 2005010973W WO 2006134652 A1 WO2006134652 A1 WO 2006134652A1
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- Prior art keywords
- oxygen
- absorbing
- container
- oxygen absorbent
- resin layer
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
-
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
- B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
-
- 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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
- B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/012—Additives improving oxygen scavenging properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Definitions
- Oxygen-absorbing resin composition oxygen-absorbing container cap using the same, and oxygen-absorbing container stopper
- the present invention relates to an oxygen-absorbing resin composition, and a container cap and a container stopper portion such as a beverage bottle container using the same.
- Patent Document 1 describes a container closure containing an oxygen absorbent
- Patent Document 2 contains an ethylene vinyl alcohol polymer, which is not an oxygen absorbent, but contains oxygen.
- a container cap with reduced transmittance is described.
- Patent Document 3 describes a container cap that contains an oxygen absorbent, an ethylene vinyl alcohol polymer, and the like, and has fine irregularities formed on the surface of the oxygen absorbent-containing resin layer.
- Patent Document 1 JP-A-1-315438
- Patent Document 2 JP-A-2-225568
- Patent Document 3 Japanese Patent Laid-Open No. 4-327149
- the conventional container cap has not yet been satisfactory in oxygen absorption. In other words, the conventional container cap also has sufficient oxygen absorption performance. Sometimes it was not possible.
- the present inventors examined the application of an oxygen absorber having high oxygen absorption but low compatibility with the base resin.
- a resin containing such an oxygen absorber is not fluidized.
- the high oxygen absorption performance expected from the performance of the oxygen absorbent could not be obtained.
- the liner seal is subject to physical and thermal stress due to the seal.
- the present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to solve the above-described conventional problems, have excellent oxygen absorption, absorb oxygen remaining in the sealed container, and In addition to improving the preservability of the contents of these materials, the moldability, the dispersibility of the oxygen absorbent, the oxygen absorption, which are problematic when containing an oxygen absorbent that has high oxygen absorption but low compatibility with the base resin, are included. Oxygen-absorbing resin composition and oxygen-absorbing container cap using the same, with improved stability, performance of preventing separation and separation of oxygen absorbent from base resin, and rigidity of seal part An oxygen-absorbing container stopper is provided.
- the present inventors have determined that the shape of the oxygen absorbent-containing resin layer in the case of contents such as carbonated drinks in a container cap having an oxygen absorbent-containing resin layer in the packing.
- the top surface of the packing swells upward due to the internal pressure of the container, and as a result, the cap top surface swells.
- Another object of the present invention is to solve the above-mentioned problems of the conventional container cap, have excellent oxygen absorbability, absorb oxygen remaining in the sealed container, and preserve the contents. Even when the contents are carbonated beverages and the container is in a pressurized state, it is possible to prevent the dome phenomenon from occurring due to the internal pressure of the container. It is an object of the present invention to provide an oxygen-absorbing container cap that has good moldability during the process.
- the present invention is characterized in that an oxygen absorbent containing a particle size of 1000 ⁇ m or less at 20% or more is dispersed and blended at a ratio of 20% or less with respect to the base resin.
- An oxygen-absorbing resin composition is provided (Claim 1).
- the oxygen-absorbing resin composition of the present invention has an oxygen absorbent containing 20% or more of a particle size of 1000 ⁇ m or less, an HLB (hydrophile-lipophile balance) value of 1.5
- the above water-absorbing material may be dispersed and blended at a ratio of 20% or less with respect to the base resin (claim 2).
- the oxygen-absorbing resin composition according to claims 1 and 2 can be used as a material for all components of a packaging container.
- a first oxygen-absorbing container cap of the present invention is an oxygen-absorbing container cap having an oxygen absorbent-containing resin layer on the inner side of the container,
- the agent-containing resin layer has lattice-like convex portions and / or concave portions on the inner side of the container (claim 3).
- the oxygen absorbent-containing resin layer may contain a water-absorbing material (claim 4).
- the base resin forming the oxygen absorbent-containing resin layer has an oxygen permeability of 10-cc'mmZcm 2 at 23 ° C and 40% RH (Relative humidity) conditions.
- thermoplastic resin that is day 'atm or more and has a water absorption of 0.01% or more in 23 ° C pure water and contains 100 to 100 parts by weight of oxygen absorbent per 100 parts by weight. (Claim 5).
- the base resin further contains: 100 to 100 parts by weight of a water-absorbing material per 100 parts by weight (claim 6).
- the present invention is a container cap having an oxygen absorbent-containing resin layer on the inner side of the container, wherein the oxygen absorbent-containing resin layer has a particle size fraction of 1000 / m or less.
- a second oxygen-absorbing container cap characterized in that an oxygen absorbent containing at least% is dispersed and blended at a ratio of 20% or less with respect to the base resin (claim 7).
- a third oxygen-absorbing container cap of the present invention comprises: A container cap having an oxygen absorbent-containing resin layer on the inner side of the container, wherein the oxygen absorbent-containing resin layer disperses a water-absorbing material having an HLB value of 1.5 or more at a ratio of 20% or less with respect to the base resin. (Claim 8).
- the oxygen absorbent-containing resin layer is formed by dispersing and blending an oxygen absorbent containing 20% or more of a particle size of 1000 xm or less in a proportion of 20% or less with respect to the base resin (claim 9). ).
- the first to third oxygen-absorbing container caps can be oxygen-absorbing container caps in which the oxygen absorbent-containing resin layer is formed integrally with a cap shell ( Claim 10). That is, the oxygen absorbent-containing resin layer can be formed integrally with the cap shell on the entire inner surface of the cap shell or a part thereof by in-shell molding or multilayer molding.
- an oxygen-absorbing container cap in which a seal portion that comes into contact with and seals with the container mouth portion inside the cap shell has an oxygen absorbent-containing resin layer can be provided.
- the sealing portion may be configured to cap shell integrally (claim 12), wherein the sealing portion may be configured as inner plug cap shell and the separate (claim 13) 0
- the seal part can be a liner packing formed integrally with the cap shell by in-shell molding, multilayer molding, or the like, and can also be injection molding or compression molding.
- a seal part such as a packing separately formed by, for example, may be integrally formed on the cap shell by fusion or adhesion.
- the seal portion is configured by combining a middle plug such as a packing separately formed by injection molding, compression molding, or the like so that the seal does not adhere to the cap shell but does not separate. The power to do S.
- the cap may be an oxygen-absorbing container cap made entirely of an oxygen absorbent-containing resin (claim 14).
- the oxygen-absorbing agent-containing resin layer is formed of an oxygen-absorbing agent-containing resin film, or an oxygen-absorbing agent-containing resin film.
- Oxygen-absorbing container formed from a multilayer film bonded with a base film It can be a cap (claim 15).
- an oxygen-absorbing container stopper having an oxygen absorbent-containing resin layer on the inner side of the container, wherein the oxygen absorbent-containing resin layer is 1000 zm or less.
- An oxygen-absorbing container stopper is provided, which is obtained by dispersing and blending an oxygen absorbent containing a particle size of 20% or more at a ratio of 20% or less with respect to the base resin (claim 16).
- the oxygen-absorbing container stopper of the present invention is a container stopper having an oxygen absorbent-containing resin layer on the inner side of the container, and the oxygen absorbent-containing resin layer is A water-absorbing material having an HLB value of 1.5 or more may be dispersed and blended at a ratio of 20% or less with respect to the base resin (claim 17).
- the oxygen absorbent-containing resin layer may be formed by dispersing and blending an oxygen absorbent containing 20% or more of a particle size of 1000 ⁇ m or less in a proportion of 20% or less with respect to the base resin. (Claim 18).
- the oxygen-absorbing resin composition of the invention according to claim 1 has an oxygen absorbent containing 20% or more of a particle size of 1000 ⁇ m or less in a proportion of 20% or less with respect to the base resin. Therefore, the following effects can be obtained.
- the particle size of the oxygen absorbent dispersed and blended with the base resin is large and the proportion of the product increases, the moldability of the oxygen absorbent resin composition deteriorates and the dispersion of the oxygen absorbent deteriorates.
- the overall surface area of the oxygen absorbent will be M, so it will not be possible to improve oxygen absorption performance.
- the oxygen absorber has a specific particle size, and by dispersing and molding a specific amount of such an oxygen absorbent, the moldability of the oxygen absorbent-containing resin is improved. Good and stable with no variation due to products with good dispersibility of oxygen absorber In addition, high oxygen absorption performance can be obtained, and peeling and separation of the oxygen absorbent from the base resin hardly occur. Therefore, according to the present invention, an oxygen-absorbing resin composition having excellent oxygen absorption performance, promptly absorbing oxygen remaining in the sealed container, and good contents preservability can be obtained.
- the oxygen-absorbing resin composition when the oxygen-absorbing resin composition is formed as a seal portion for opening and closing a mouth portion of a packaging container such as a beverage bottle container, the oxygen to be dispersed and blended with the base resin
- the proportion of absorbent is 20. /. If it is larger, the rigidity will be excessively increased and the sealing performance will be reduced. In the oxygen-absorbing resin composition of claim 1, it is 20% or less, so that the rigidity is suppressed and the sealing performance is ensured. Can be maintained.
- the invention according to claim 2 is configured such that an oxygen absorbent containing 20% or more of a particle size of 1000 ⁇ or less is dispersed and blended at a ratio of 20% or less with respect to the base resin (hereinafter, And a configuration in which a water-absorbing material having an HLB value of 1.5 or more is dispersed and blended at a ratio of 20% or less with respect to the base resin (hereinafter referred to as a subsequent configuration). Yes. Since the configuration of the preceding stage is the same as the configuration of the invention according to claim 1, the invention according to claim 2 provides the above-described effect obtained by the invention according to claim 1, and further, according to the configuration of the subsequent stage. The following effects can be obtained.
- the HLB value of the water-absorbing material dispersed and blended with the base resin is a small value of less than 1.5, the water-absorbing property of the oxygen-absorbing resin composition, and thus the promotion of the oxygen-absorbing effect is insufficient.
- the HLB value is specified to be 1.5 or more, the oxygen absorption effect can be sufficiently promoted, whereby oxygen remaining in the sealed container can be absorbed quickly. Therefore, the preservability of the contents of the container is improved.
- the proportion of the water-absorbing material dispersed and blended with respect to the base resin is larger than 20%, the oxygen-absorbing resin composition becomes mechanically brittle, but in this invention, it is specified as 20% or less. Therefore, it becomes mechanically fragile, so that it is easy to manufacture and is good in terms of durability and usability.
- an oxygen absorbent having a low compatibility as well as an oxygen absorbent having a high compatibility with the base resin can be used.
- An oxygen-absorbing resin composition that is also excellent in terms of properties can be obtained.
- the oxygen absorbent-containing resin layer has a lattice-like shape on the inner side of the container. Since it has many convex parts and / or concave parts, the following effects can be obtained. That is, if the oxygen absorbent-containing resin layer has a planar shape, it is difficult to obtain sufficient oxygen absorption performance with a small surface area. However, the oxygen absorbent-containing resin layer of the present invention has the shape described above. Since the surface area is large and the oxygen absorption performance is greatly improved, the strength of the seal itself increases.For example, the contents of the container are carbonated beverages, and the inside of the container is in a pressurized state. Even in such cases, it is possible to reliably prevent the dome phenomenon from occurring due to the internal pressure of the container, and it is suitable for molding methods such as injection molding, in which the resin that is the material flows evenly. Since it has a shape, the moldability is good.
- the oxygen absorbent-containing resin layer contains a water absorbent material in addition to the oxygen absorbent, the oxygen absorption performance is further improved, and the container head after sealing is sealed. Residual oxygen in the space is quickly absorbed, and the preservability of the contents of the container becomes better.
- the inventions according to claims 5 and 6 are obtained by the inventions according to claims 3 and 4 above. An effect similar to the effect can be obtained.
- the container cap according to claim 7 has an oxygen absorbent-containing resin layer on the inner side of the container, and the oxygen absorbent-containing resin layer contains 20% or more of a particle size of 1000 ⁇ m or less. Is dispersed and blended at a ratio of 20% or less with respect to the base resin. That is, since the oxygen-absorbing agent-containing resin layer is formed by the oxygen-absorbing resin composition according to claim 1, the invention according to claim 7 has the same effect as the oxygen-absorbing resin composition according to claim 1. A container cap having an oxygen absorbent-containing resin layer exhibiting the following is obtained. The same applies to the oxygen-absorbing container stopper according to claim 16.
- the container cap according to claim 8 has an oxygen absorbent-containing resin layer on the inner side of the container, and the configuration of the oxygen absorbent-containing resin layer is the same as that of the latter stage of the invention according to claim 2. It is the same. Therefore, the invention according to claim 8 provides a container cap having an oxygen absorbent-containing resin layer that exhibits the same effect as the effect of the latter stage of the invention according to claim 2. The same applies to the oxygen-absorbing container stopper according to claim 17.
- the container cap according to claim 9 has an oxygen absorbent-containing resin layer on the inside of the container, and the oxygen absorbent-containing resin layer is formed by the oxygen absorbent resin composition according to claim 2. is there. Therefore, in the invention according to claim 9, a container cap having an oxygen absorbent-containing resin layer that exhibits the same effect as the oxygen-absorbing resin composition according to claim 2 is obtained. The same applies to the oxygen-absorbing container stopper according to claim 18.
- FIG. 1 is an explanatory view schematically showing a configuration of an oxygen-absorbing container cap according to an embodiment of the present invention.
- FIG. 2 is a bottom view schematically showing a configuration of a seal portion in the embodiment.
- FIG. 3 is a bottom view schematically showing a configuration of a modified example of the seal portion.
- FIG. 4 is an explanatory view schematically showing a configuration of a modified example of the oxygen-absorbing container cap.
- FIG. 5 (A) and (B) are a perspective view and a partial longitudinal sectional view schematically showing a configuration of an oxygen-absorbing container stopper according to another embodiment of the present invention.
- the oxygen-absorbing resin composition is obtained by dispersing and blending an oxygen absorbent containing 20% or more of a particle size of 1000 ⁇ m or less in a proportion of 20% or less with respect to the base resin.
- the oxygen absorbent preferably contains a particle size of 1000 xm or less, preferably 30% or more, more preferably 50% or more.
- the particle size of 1000 ⁇ m or less is less than 20% and the proportion of oxygen absorbers with a particle size greater than 1000 ⁇ m increases, that is, the proportion of oxygen absorbers with small particle sizes decreases, and oxygen If the proportion of the absorbent having a large particle size increases, the formability of the oxygen-absorbing resin composition deteriorates.
- the oxygen absorbent may vary depending on the product with poor dispersion of the oxygen absorbent, making it difficult to obtain stable oxygen absorption performance, and the overall surface area of the oxygen absorbent (the oxygen in the headspace).
- the oxygen absorption performance does not increase, and the oxygen absorbent is easily peeled off or separated from the base resin.
- the ratio of the oxygen absorbent dispersed and blended with respect to the base resin exceeds 20%, the rigidity of the sealing portion such as the liner is increased, and the sealing performance is deteriorated.
- an oxygen absorbent composed of a reducing compound or the like conventionally used for this type of application can be used, for example, as an oxygen absorbing simultaneous IJ that is a salt.
- sodium sulfite potassium sulfite and ascorbate (such as sodium L-ascorbate) can be mentioned.
- the oxygen absorbent that is an acid include L-ascorbic acid, ersorbic acid, and hydroxynolecarboxylic acid.
- Metallic oxygen absorbers that have reducing properties include reducing iron (powder), reducing tin powder, and reducing zinc (powder).
- the metal compound include iron carbide, calcium iron, carbonyl iron, and iron hydroxide.
- a polymer compound having a polyvalent phenol can be used as the oxygen absorbent.
- a nonionic surfactant having an HLB value of 1.5 or more is dispersed and blended as a water-absorbing material in a proportion of 20% or less with respect to the base resin.
- the HLB value is preferably 1.5 or more and 30 or less, and more preferably 3 or more and 10 or less. If the HLB value is low, the water absorption and thus the oxygen absorption effect is insufficiently promoted. Conversely, if the HLB value is high, the dispersibility in the base resin becomes poor and molding becomes difficult.
- the content of the water-absorbing material in the oxygen-absorbing resin composition is more preferably 10% or less, more preferably 15% or less with respect to the base resin.
- the water-absorbing material content is small, the water-absorbing fin and the oxygen absorption effect are not sufficiently promoted, and if the water-absorbing material content is undesirably large, molding becomes difficult, and the oxygen-absorbing resin composition This is preferable because it becomes mechanically brittle or too soft.
- the water-absorbing material include fatty acid esters such as glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, propylene glycol fatty acid esters, and higher alcohol fatty acid esters.
- a water-absorbing material in combination with the above-mentioned water-absorbing material, in an amount of 20% or less with respect to the base resin, silica gel; inorganic salts such as calcium carbonate, calcium chloride, sodium sulfate; Alternatively, a hydrophilic polymer having a hydrophilic group such as a hydroxyl group, an amino group, a carboxylic acid group, or an ester group may be used.
- the water-absorbing material content is preferably 20% or less relative to the base resin. When the content of the water-absorbing material exceeds 20% with respect to the base resin, the moldability is deteriorated and the mechanical properties of the molded product are deteriorated.
- the base resin in which the oxygen absorbent and the water-absorbing material are dispersed and blended is any soft resin that can be injection-molded, compression-molded or in-shell molded, and has softness and cushioning properties.
- a conventionally known thermoplastic resin can be used.
- Olefin resins such as polymers (ionomers); olefin elastomers such as ethylene-propylene-gen copolymers, hydrogenated-tylene-propylene-gen copolymers; SBS elastomers, SBR, etc., one or more of these It is possible to use S in combination.
- the base resin is a resin oxygen transmission rate at 23 ° C and 40% RH conditions 10- 4 cc'm m / cm 2 ' day' atm or higher, and at 23 ° C pure water It is preferable that the water absorption amount of the thermoplastic resin is 0.01% or more.
- the base resin forming the oxygen-absorbing resin composition contains:! To 100 parts by weight, preferably:! To 50 parts by weight of an oxygen absorbent per 100 parts by weight. If the oxygen absorbent content is low, the oxygen absorbability is insufficient, and conversely if it is high, the moldability deteriorates.
- the base resin contains: 100 to 100 parts by weight, preferably:! To 50 parts by weight of a water-absorbing material per 100 parts by weight. If the content of the water-absorbing material is low, the oxygen absorption is insufficient, and conversely if it is high, the moldability deteriorates.
- the oxygen-absorbing container cap of the present invention has an oxygen-absorbing agent-containing resin layer configured using the oxygen-absorbing resin composition.
- the cap is not limited to the pill-proof cap, but may be, for example, a spout (mouth) in a soft packaging container such as a crown, a tab-breaking score breakage type open cap, a pre-screw cap, a lug cap, or other voucher. Caps with cap shapes such as caps can be made and used by conventionally known manufacturing methods (such as injection molding and compression molding).
- a material used for a conventional cap seal material can be used as a material constituting the cap shell of the cap.
- a material used for a conventional cap seal material can be used.
- Examples thereof include light metals such as aluminum, and sheet-like or foil-like metal materials such as surface-treated steel sheets such as phosphoric acid treatment or chromic acid treatment.
- the seal part such as liner liner packing may consist entirely of an oxygen-absorbing resin composition forming an oxygen-absorbing agent-containing resin layer, or an oxygen-absorbing agent-containing resin layer. Other parts may be made of a material different from the oxygen-absorbing resin composition.
- the seal portion can be provided by integrally molding a resin to the cap shell by compression molding or injection molding.
- the sealing portion and the cap shell can be integrated and assembled.
- the seal part can be in close contact with the cap shell, or it can be combined but not in close contact with the cap shell.
- An oxygen-absorbing container cap (hereinafter referred to as a cap) 1 in this embodiment is a pilfer nolef cap. As shown in Fig. 1, a cap shell 2 made of synthetic resin and an inner side of the cap shell 2 are provided. A seal portion 5 that comes into contact with the mouth portion 4 of the container 3 and seals it. I have.
- the cap shell 2 includes a shell top plate 2a having a circular shape in plan view, a skirt wall 2b suspended from the periphery of the shell top plate 2a, and a plurality of bridges 2c at the lower end of the skirt wall 2b.
- Tamper-evidence band hereinafter referred to as TE node and layer
- TE node and layer Tamper-evidence band
- a cap screw portion 2f is formed on the inner surface portion. The cap screw portion 2f is screwed into the container screw portion 4a formed on the outer peripheral surface of the mouth portion 4 of the container 3.
- the bridge 2c is formed as follows, for example. That is, when the cap shell 2 is molded by injection molding or the like, a plurality of connecting pieces (not shown) are predetermined in the circumferential direction on the inner surface side between the skirt wall 2b and the TE band 2d. A slit a is formed on the outer surface of the portion corresponding to the connecting piece, leaving a part of the connecting piece, and extending around the entire circumference with a cutter or the like. To form bridge 2c.
- the locking member 2e has an upper end locked to an annular protrusion (bead) 4b formed on the lower side of the container screw part 4a of the mouth part 4 of the container 3 at the time of opening,
- the upper end is elastically deformable in the diameter-enlarging direction, and when it is closed, it is elastically deformed in the diameter-enlarging direction to get over the annular protrusion 4b, and then return to the posture that can be locked below the annular protrusion 4b. It is configured.
- the seal portion 5 is configured as an inner plug formed separately from the cap shell 2, and the seal portion 5 is a top plate whose outer peripheral edge is in contact with the upper end surface of the mouth portion 4 of the container 3. 5a, and a middle leg 5b which is continuously provided on the peripheral edge of the top plate 5a and is fitted into the mouth 4 of the container 3 so that it can be sealed when closed.
- a top side seal portion 5c that is curved downward and can be brought into close contact with the outer peripheral surface of the mouth 4 of the container 3 is formed, and the root of the middle foot 5b on the upper surface of the top plate 5a
- An annular recess 5d is formed along the outer periphery of the top plate 5a at a position corresponding to the outer periphery of the top plate 5a.
- a bulging portion 5e bulging outward is formed on the outer periphery of the intermediate portion in the vertical direction of the middle foot 5b.
- an oxygen absorbent-containing resin layer 6 having a substantially circular shape in a bottom view made of an oxygen-absorbing resin composition is formed on the inner side of the middle foot 5b on the lower surface side (inside the container) of the top plate 5a. Is provided.
- the oxygen absorbent-containing resin layer 6 has a shape in which a grid-like convex part and a Z or concave part are provided on the inner side of the container. In this embodiment, as shown in FIG.
- a lattice-like convex portion 6a is provided, and a plurality of concave portions 6b are provided between the convex portions 6a.
- Each recess 6b is rectangular or square when viewed from the bottom.
- each recess 6b formed in the peripheral portion of the oxygen absorbent-containing resin layer 6 has a substantially trapezoidal or triangular shape in bottom view.
- the shape of the recess 6b may be, for example, a rhombus shape or a parallelogram shape as seen from the bottom as shown in FIG.
- the shape of the oxygen absorbent-containing resin layer 6 can be any shape other than the above.
- the middle foot 5b may have the oxygen absorbent-containing resin layer 6.
- the oxygen absorbent-containing resin layer 6 is, for example, a sodium sulfite having a particle size of 20% or less of 1000 ⁇ m or less as an oxygen absorbent at a ratio of 20% or less to 100 parts of a base resin such as polyethylene.
- a base resin such as polyethylene.
- glycerin ester for example, 5.0 parts
- the oxygen absorbent-containing resin layer 6 comprises sodium sulfite (eg, 5.0 parts) having a particle size of 50% or less as an oxygen absorbent at a ratio of 20% or less with respect to 100 parts of the base resin.
- glycerin ester for example, 2.5 parts having an HLB value of 6.5 as a water-absorbing material.
- the seal part 5 having the oxygen absorbent-containing resin layer 6 may be entirely made of the same material as the material (oxygen-absorbing resin composition) constituting the oxygen absorbent-containing resin layer 6.
- the portions other than the oxygen absorbent-containing resin layer 6 may be made of a material different from the material (oxygen-absorbing resin composition) constituting the oxygen absorbent-containing resin layer 6.
- the seal portion 5 that is tightly fitted to the container opening 4 has the top side seal portion 5c of the top plate 5a that is the cap screw portion 2f of the cap shell 2 when the cap is opened So that the middle foot 5b comes out of the container mouth 4 and is started to lift the seal portion 5 having the middle foot 5b after the bridge 2c is cut. / Or The upper end position of the cap screw 2f is set.
- the locking member 2e Comes into contact with the annular protrusion 4b of the container mouth part 4, and the bridge 2c is cut. After the cutting, the top plate 5a of the seal part 5 and the top side seal part 5c, and thus the entire seal part 5 are covered by the cap screw part 2f. As the seal part 5 is further lifted, the bulging part 5e of the middle leg 5b of the seal part 5 comes out of the container mouth part 4 so that the airtightness of the container 3 by the seal part 5 is released for the first time. It is configured.
- the top side seal portion 5c is elastically deformed toward the center of the container mouth portion 4 by forming the annular recessed portion 5d on the top plate 5a of the seal portion 5.
- the airtight function of the top side seal portion 5c with respect to the outer peripheral corner portion of the container mouth portion 4 is enhanced.
- the seal portion 5 is not a packing or liner that is an inner plug separate from the cap shell 2, as shown in FIG. 4, a resin is formed on the cap shell 2 by compression molding or injection molding. It may be configured as a liner or packing provided by integral molding.
- the oxygen absorbent-containing resin layer 6 can be provided, for example, in a portion inside the middle foot 5b on the lower surface side of the top plate 5a.
- a packing or liner molded separately from the cap shell 2 may be bonded or fused to the cap shell 2 and integrated.
- the entire cap 1 or a part of the inside of the cap shell other than the seal portion 5 may be made of an oxygen-absorbing resin composition (oxygen-absorbing agent-containing resin).
- oxygen-absorbing agent-containing resin oxygen-absorbing resin composition
- the oxygen absorbent-containing resin layer consists of 5.0 parts of sodium sulfite having a particle size of 20% or less of 1000 xm as an oxygen absorbent with respect to 100 parts of the base resin (polyethylene), and glycerin ester 2 as the water-absorbing material. Contains 5 parts.
- the oxygen absorbent-containing resin layer 6 may be formed from an oxygen absorbent-containing resin film obtained by forming an oxygen-absorbing resin composition into a film, or the oxygen absorbent-containing resin film.
- This oxygen absorbent-containing resin film may be formed from a multi-layer film, in which a base film for reinforcing and protecting is laminated.
- the oxygen absorbent-containing resin layer 6 may be provided on the container inner side of a container stopper such as a spout provided in a soft packaging container such as a bouch.
- the oxygen absorbent-containing resin layer 6 of the oxygen-absorbing container stopper is dispersed and distributed with an oxygen absorbent containing, for example, 20% or more of a particle size of 1000 / m or less at a ratio of 20% or less to the base resin.
- the container stopper is fixed to the side wall 7 of the flexible packaging container so that the inside and the outside of the flexible packaging container communicate with each other.
- the oxygen absorbent-containing resin layer 6 can be provided, for example, at least on the inner side of the cylindrical member 8 and / or on the inner side of the cap 9 at least. Since the cap 9 of the container stopper has almost the same structure as the cap 1, the oxygen absorbent-containing resin layer 6 provided on the cap 9 of the container stopper is provided with the oxygen absorbent provided on the cap 1.
- the oxygen absorbent-containing resin can be formed on the inner wall portion of the cylindrical member 8. If layer 6 is provided.
- 10 is a flange provided below the male screw portion 8a on the outer peripheral surface of the cylindrical member 8.
- the packaging container such as a plastic bottle, glass bottle, and pouch made of polyethylene terephthalate, which is effective in the above-described operation, It can be applied to caps and plugs.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Closures For Containers (AREA)
- Packages (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/921,769 US7704407B2 (en) | 2005-06-15 | 2005-06-15 | Oxygen-absorbing container cap |
PCT/JP2005/010973 WO2006134652A1 (ja) | 2005-06-15 | 2005-06-15 | 酸素吸収性樹脂組成物ならびにこれを用いた酸素吸収性容器キャップおよび酸素吸収性容器栓部 |
EP05750875A EP1892267A4 (en) | 2005-06-15 | 2005-06-15 | OXYGENABLE RESIN COMPOSITION AND OXYGENABLE PLUG FOR CONTAINER AND OXYGENABLE CLOSURE PART OF A CONTAINER USING THE SAME |
CN2005800498603A CN101180368B (zh) | 2005-06-15 | 2005-06-15 | 氧吸收性树脂组合物以及使用了该组合物的氧吸收性容器盖和氧吸收性容器栓部 |
KR1020077024474A KR100953352B1 (ko) | 2005-06-15 | 2005-06-15 | 산소흡수성 수지 조성물 및 이것을 사용한 산소흡수성 용기캡 및 산소흡수성 용기마개부 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/010973 WO2006134652A1 (ja) | 2005-06-15 | 2005-06-15 | 酸素吸収性樹脂組成物ならびにこれを用いた酸素吸収性容器キャップおよび酸素吸収性容器栓部 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006134652A1 true WO2006134652A1 (ja) | 2006-12-21 |
Family
ID=37532024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/010973 WO2006134652A1 (ja) | 2005-06-15 | 2005-06-15 | 酸素吸収性樹脂組成物ならびにこれを用いた酸素吸収性容器キャップおよび酸素吸収性容器栓部 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7704407B2 (ja) |
EP (1) | EP1892267A4 (ja) |
KR (1) | KR100953352B1 (ja) |
CN (1) | CN101180368B (ja) |
WO (1) | WO2006134652A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009096019A1 (ja) * | 2008-01-31 | 2009-08-06 | Nihon Yamamura Glass Co., Ltd. | キャップ及びこのキャップを備えた容器 |
US9248943B2 (en) | 2012-02-18 | 2016-02-02 | Anheuser-Busch, Llc | Container closure |
JP2016532753A (ja) * | 2014-07-15 | 2016-10-20 | 三和化學工業株式會社Samhwa Chemicalindustrial Co., Ltd. | 瓶蓋ガスケット用酸素吸収樹脂組成物 |
JP2017074971A (ja) * | 2015-10-15 | 2017-04-20 | 日本山村硝子株式会社 | キャップ及びこのキャップを備えた容器 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US20080044879A1 (en) * | 2006-08-17 | 2008-02-21 | The Charles Stark Draper Laboratory, Inc. | Systems and methods of voltage-gated ion channel assays |
WO2009051703A1 (en) | 2007-10-15 | 2009-04-23 | The Charles Stark Draper Laboratory, Inc. | Ion-selective sensors |
US9309029B2 (en) | 2009-03-05 | 2016-04-12 | Multisorb Technologies, Inc. | Method of molding a high moisture barrier and self-desiccating container with living hinge |
CN102811921B (zh) * | 2010-03-25 | 2015-07-08 | 日本山村硝子株式会社 | 合成树脂制防盗盖 |
WO2013088422A2 (en) * | 2011-12-15 | 2013-06-20 | Aron Joseph Clarkson | A three-part closure sealing and dispensing device for all types of Containers |
EP3342728B1 (en) * | 2016-12-29 | 2019-08-21 | Tetra Laval Holdings & Finance S.A. | Package for pourable food products and method for moulding a polymeric opening portion |
KR102202095B1 (ko) | 2019-06-28 | 2021-01-12 | 경상남도 | 기능성 음료용 용기마개 |
KR102307435B1 (ko) | 2021-02-15 | 2021-09-30 | 삼화화학공업주식회사 | 변형방지 특성을 가지는 산소흡수수지 조성물 |
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- 2005-06-15 US US11/921,769 patent/US7704407B2/en not_active Expired - Fee Related
- 2005-06-15 EP EP05750875A patent/EP1892267A4/en not_active Withdrawn
- 2005-06-15 KR KR1020077024474A patent/KR100953352B1/ko not_active IP Right Cessation
- 2005-06-15 CN CN2005800498603A patent/CN101180368B/zh not_active Expired - Fee Related
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WO2009096019A1 (ja) * | 2008-01-31 | 2009-08-06 | Nihon Yamamura Glass Co., Ltd. | キャップ及びこのキャップを備えた容器 |
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JP2017074971A (ja) * | 2015-10-15 | 2017-04-20 | 日本山村硝子株式会社 | キャップ及びこのキャップを備えた容器 |
Also Published As
Publication number | Publication date |
---|---|
US20090048104A1 (en) | 2009-02-19 |
CN101180368A (zh) | 2008-05-14 |
US7704407B2 (en) | 2010-04-27 |
EP1892267A4 (en) | 2009-09-23 |
KR100953352B1 (ko) | 2010-04-20 |
KR20070117685A (ko) | 2007-12-12 |
CN101180368B (zh) | 2012-04-04 |
EP1892267A1 (en) | 2008-02-27 |
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