WO2018186334A1 - 吐出容器 - Google Patents
吐出容器 Download PDFInfo
- Publication number
- WO2018186334A1 WO2018186334A1 PCT/JP2018/014073 JP2018014073W WO2018186334A1 WO 2018186334 A1 WO2018186334 A1 WO 2018186334A1 JP 2018014073 W JP2018014073 W JP 2018014073W WO 2018186334 A1 WO2018186334 A1 WO 2018186334A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- inner container
- discharge
- contents
- oxygen
- Prior art date
Links
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Images
Classifications
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- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
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- 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
- B65D1/32—Containers adapted to be temporarily deformed by external pressure to expel contents
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
- B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
- B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
- B65D47/2081—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve port
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- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
- B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
-
- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
-
- 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
- B65D2205/00—Venting means
- B65D2205/02—Venting holes
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Definitions
- the present invention relates to a discharge container.
- a discharge container as described in Patent Document 1 below is known.
- This discharge container has an inner container that accommodates the contents and deforms in accordance with a decrease in the contents, and the inner container is provided with an intake hole that sucks outside air between the inner container and the inner container.
- a container main body having an outer container; a discharge cap that is attached to a mouth portion of the container main body and formed with a discharge port for discharging contents; and an outside air introduction hole that communicates the outside with the intake hole.
- the discharge cap includes a main body cylindrical member having a top shape, an extraction cylinder communicating with the main body cylinder member, and a check valve for switching communication between the main body cylinder member and the extraction cylinder and shutting it off. ing.
- the present invention is a container in which the inner container is deformed as the contents are reduced, has a cosmetic property that can clearly show the color of the contents as it is, is reusable (recyclable), It aims at providing the discharge container excellent in property.
- the discharge container according to one aspect of the present invention is a discharge container in which at least a double container is filled with contents, and the container is made of polyethylene terephthalate resin.
- a flexible inner container that is filled with the contents and deforms as the contents are reduced, and the inner container are internally provided, and an intake hole for sucking outside air is provided between the inner container and the inner container.
- a container body having an outer container formed; A discharge port for discharging contents is formed on the top surface, and a discharge cap attached to the mouth of the container body, An outside air introduction hole communicating the outside and the intake hole,
- the inner container and the outer container are made of polyethylene terephthalate resin.
- the discharge container of the above aspect is a kind of so-called pet container, it can be reused and has a cosmetic property that can clearly show the color of the contents as it is. Moreover, the performance which hold
- one or both of the inner container and the outer container may be made of polyethylene terephthalate resin containing an oxygen absorbent.
- the contents of the discharge container may be liquid food.
- the contents of the discharge container may be a soy sauce-containing seasoning.
- a container whose inner container is deformed as the contents are reduced has a cosmetic property that can clearly show the color of the contents as it is, and can be reused (recycled). It is possible to provide a discharge container having excellent properties.
- FIG. 1 It is a perspective view which shows an example of cross-sectional structures, such as a coupling body which comprises a discharge container. It is a general view which shows an example of a discharge container. It is a perspective view which shows the structure of the synthetic resin multiple bottles (discharge container) in 2nd Embodiment of this invention. It is sectional drawing in the XX line of FIG.
- the discharge container 10 is provided with an inner container 11 that accommodates the contents M (see FIG. 5) and is deformed by squeezing as the contents M decrease, and an outer container 12 in which the inner container 11 is housed and elastically deformable.
- the container body 13 of the discharge container 10 has a mouth part 13a and a body part 13b.
- drum 13b has the shoulder part 13c, the waist part 13d, the lower trunk
- the container body 13 is formed in a bottomed cylinder shape
- the overcap 16 is formed in a topped cylinder shape
- the center axis of the container body 13 and the overcap 16 is a common axis when the overcap 16 is covered. Is placed on top.
- this common axis is referred to as the container axis O
- the overcap 16 side along the container axis O direction is referred to as the upper side
- the bottom 13f side of the container body 13 is referred to as the lower side
- the direction orthogonal to the container axis O is the radial direction.
- the direction that goes around the container axis O is called the circumferential direction.
- the container body 13 is a so-called Delami bottle in which the inner container 11 is detachably laminated on the inner surface of the outer container 12.
- both the inner container 11 and the outer container 12 are made of polyethylene terephthalate resin.
- the discharge container 10 of the present embodiment can be reused (recycled) after use, unlike a conventional discharge container made of PP or the like that has only been discarded. It has a cosmetic property that can clearly show the color as it is.
- the discharge cap 15 is not made of polyethylene terephthalate resin, the container body 13 with the discharge cap 15 removed is reused as necessary in any of the recovery steps.
- the discharge container 10 of the present embodiment in which both the inner container 11 and the outer container 12 are made of polyethylene terephthalate resin, as will be described in the following examples, is more content than the conventional discharge container made of PP or the like. Excellent performance for retaining fragrance, that is, excellent fragrance retention.
- the inner container 11 and the outer container 12 are both made of polyethylene terephthalate resin, but it is necessary to reduce the thickness of the inner container 11 in order to efficiently discharge the contents.
- the thickness of the inner container 11 is the same as the thickness of a normal PET container (the thickness of the PET bottle (container) varies depending on the purpose of use and the site, but for example, in the case of a 1L soy sauce PET bottle, the thickness is approximately 0. 0).
- the inner container 11 has a thickness of 0.15 mm, more preferably 0.05 to 0.10 mm, and the inner container 11 is releasably laminated on the inner surface of the outer container 12, and the contents are filled and the contents are reduced. Accompanied by the flexibility of deformation. Thereby, in this embodiment, a reusable PET discharge container (PET delamination container) is realized.
- PET delamination container PET delamination container
- the thickness of the inner container 11 is 2/3 to 1/6, preferably about 1/2 to 1/4 or less of the thickness of a normal PET container, and the numerical value is 0.03 to 0.2 mm.
- a function that suppresses the permeation of oxygen by generating oxygen permeability in the inner container 11 when the thickness is preferably 0.04 to 0.15 mm, more preferably 0.05 to 0.10 mm. (Oxygen barrier function) tends to be insufficient.
- the inner container 11 is made of a polyethylene terephthalate resin containing an oxygen absorbent.
- the outer container 12 can be made of polyethylene terephthalate resin containing an oxygen absorbent, and both the inner container 11 and the outer container 12 are made of polyethylene terephthalate resin containing an oxygen absorbent. It can also be configured. In the latter case, the barrier function can be exerted more strongly.
- the polyethylene terephthalate resin may contain an oxygen absorbent from the viewpoint of further improving the storage stability of the contents M.
- the oxygen absorbent is not particularly limited as long as it can be disposed inside or on the surface of the polyethylene terephthalate resin.
- a polyamide material disclosed in Japanese Patent No. 51161462 International Publication No. 2005/083003
- Those having a deoxygenating material also referred to as polyamide / transition metal catalyst-based oxygen absorber
- oxygen absorbent is preferably kneaded in the resin.
- a person skilled in the art can appropriately select the type and blending amount of the oxygen absorbent according to desired effects such as a barrier function.
- a polyamide / transition metal catalyst-based oxygen absorbent may be blended in an amount of 0.1 to 20% by weight, preferably 1 to 10% by weight, more preferably 1 to 3% by weight, based on the polyethylene terephthalate resin.
- the polyamide material can be an aromatic polyamide or an aliphatic polyamide. It can be a polyamide material homopolymer material or a copolymer amide material.
- the aromatic polyamide is preferably a homopolymer or a copolymer.
- MX nylon is m-xylylenediamine alone or an ⁇ , ⁇ -aliphatic dicarboxylic acid containing m-xylylenediamine and p-xylylenediamine in less than 30% of the total and having 6 to 10 carbon atoms Is a polymer containing at least 70 mol% of structural units derived from a xylylenediamine mixture containing
- MX polymers examples include homopolymers such as poly-m-xylylene adipamide, poly-m-xylylene sebacamide, m-xylylene / p-xylylene adipamide copolymer, m-xylylene / Copolymers such as p-xylylene piperamide copolymer and m-xylylene / p-xylylene azelamide copolymer, and homopolymer or copolymer components thereof, aliphatic diamines such as hexamethylene diamine, cyclic diamines such as piperazine Aromatic diamines such as p-bis (2-aminoethyl) benzene, aromatic dicarboxylic acids such as terephthalic acid, ⁇ -caprolactam, ⁇ -aminocarboxylic acids such as ⁇ -aminoheptanoic acid, and p-amino Copolymers with aromatic amino carboxylic acids such as
- a particularly preferred aromatic polyamide is, for example, by polymerization of metaxylylenediamine (H 2 NCH 2 —m—C 6 H 4 —CH 2 NH 2 ) and adipic acid (HO 2 C (CH 2 ) 4 CO 2 H).
- the polymer that is formed which is a product manufactured and sold by Mitsubishi Gas Chemical in Japan with the MXD6 label.
- Various grades of MXD6 are available, for example grades 6001, 6007, 6021.
- a preferred aliphatic polyamide material is nylon 66.
- Other suitable polyamides include GRIVORY® (eg, GRIVORY® G16 and G21, which are copolyamides having linear aliphatic units and cyclic aromatic components, and are available from EMS-Chemie Inc.
- VERSAMID® which is an aliphatic polyamide typically used as an ink resin and available from Cognis Corporation).
- the preblend contains oxygen scavenging materials.
- the oxygen scavenging material is present from about 20 ppm to about 2000 ppm, preferably from about 50 ppm to about 1500 ppm by weight of the preblend.
- the preblend contains the preferred oxygen scavenger material at about 100 ppm to about 1000 ppm by weight of the preblend.
- the deoxygenated material may be, for example, a metal, complex or salt selected from the first, second and third transition series of the periodic table.
- Metals that can be used as a deoxidizing material include iron, cobalt, copper, manganese, zinc, nickel, ruthenium, rhodium, palladium, osmium, iridium, and platinum.
- oxygen scavenging materials include aluminum powder, aluminum carbide, aluminum chloride, cobalt powder, cobalt oxide, cobalt chloride, antimony powder, antimony oxide, antimony triacetic acid, antimony chloride III, antimony chloride V, iron, electrolytic iron, iron oxide , Platinum, platinum on alumina, palladium, palladium on alumina, ruthenium, rhodium, copper, copper oxide, nickel, and mixed metal nanoparticles (ie, cobalt iron oxide nanoparticles).
- cobalt, iron, nickel, copper, or manganese compounds are preferred deoxygenating materials.
- the deoxygenation material in which the cobalt compound is the most preferred deoxygenation material, is typically present as a metal salt or complex.
- the anion of the salt can be inorganic or organic. Examples of anions include halides, particularly chloride, acetate, stearate, and octoate.
- Other oxygen scavenging materials include cobalt (II) bromide and cobalt carboxylate.
- Cobalt carboxylate is available as cobalt SICCATOL®.
- Cobalt carboxylate is a solution of C8-C10 cobalt carboxylate and the concentration of cobalt (as metal) is about 10% by weight with respect to the solution.
- the arrangement and amount of the deoxidized material in the innermost layer of the container can be appropriately determined by those skilled in the art.
- the mouth portion 13a of the container body 13 is formed in a two-stage cylindrical shape including an upper cylindrical portion 17 positioned on the upper side and a lower cylindrical portion 18 positioned on the lower side and formed with a larger diameter than the upper cylindrical portion 17.
- a male screw portion 29 is formed on the outer peripheral surface of a portion (hereinafter, referred to as an outer upper tube portion) 17 a formed of the outer container 12 in the upper tube portion 17.
- an intake hole 19 through which outside air is sucked is formed between the outer upper cylinder portion 17 a and the inner container 11 at a portion located below the male screw portion 29.
- a communication groove 20 extending in the container axis O direction is formed in a portion of the male screw portion 29 located above the intake hole 19.
- An inner peripheral surface of the outer upper cylindrical portion 17a is a cylindrical surface, and a portion (hereinafter referred to as an inner upper cylindrical portion) 17b formed of the inner container 11 in the upper cylindrical portion 17 is laminated on the inner peripheral surface. Yes. Moreover, the upper end part of the inner upper cylinder part 17b is return
- the discharge cap 15 includes an inner plug member 21 that closes the mouth portion 13a of the container main body 13, and a top-like cylindrical main body cylinder member 23 that covers the inner plug member 21 and has the discharge port 14 formed therein. Yes.
- the inner plug member 21 includes a plug main body 47 whose outer peripheral edge is disposed on the opening end of the mouth portion 13 a of the container main body 13, and a communication cylinder portion 22 erected from the plug main body 47.
- the stopper body 47 has a bottomed cylindrical inner cylinder portion 24 disposed in the mouth portion 13a of the container body 13 with a gap between the mouth portion 13a, and a radial direction from the upper end of the inner cylinder portion 24.
- a flange portion 25 that protrudes toward the outside of the container body 13 and is disposed on the open end of the mouth portion 13a of the container body 13, and an outer cylinder portion 26 that extends upward from the outer peripheral edge of the flange portion 25;
- An intermediate tube portion 27 extending downward from the flange portion 25 so as to surround the inner tube portion 24 from the outside in the radial direction and fitted in the mouth portion 13a of the container body 13 in a liquid-tight manner. ing.
- the communication tube portion 22 is arranged on the bottom wall portion of the inner tube portion 24.
- a through-hole 42 that opens both in the inner container 11 and in the communication cylinder portion 22 is provided in the bottom wall portion.
- the through hole 42 is arranged coaxially with the container axis O and has a smaller diameter than the inner diameter of the communication cylinder part 22.
- the size of the through hole 42 along the container axis O direction is the container axis of the communication cylinder part 22. It is smaller than the size along the O direction.
- the main body cylinder member 23 is formed in a top cylinder shape that is arranged coaxially with the container axis O.
- a female screw portion 30 is formed that is screwed to the male screw portion 29 of the mouth portion 13 a of the container main body 13.
- the lower cylinder portion 18 in the mouth portion 13a of the container body 13 is fitted in an airtight state in a lower end portion located below the screw portion where the female screw portion 30 is formed, and the screw
- the outer tube portion 26 of the inner plug member 21 is fitted in the upper end portion located above the portion.
- the top wall portion 23b of the main body cylinder member 23 has an annular lower plate portion 31 that extends radially inward from the upper end of the peripheral wall portion 23a, and a smaller diameter than the inner diameter of the lower plate portion 31.
- the upper plate part 32 arrange
- the lower plate portion 31, the upper plate portion 32 and the connecting ring portion 33 are arranged coaxially with the container axis O.
- the upper plate portion 32 is formed with an outside air introduction protrusion 34 a having an outside air introduction hole 34 that allows the inside of the main body cylinder member 23 to communicate with the outside.
- the upper plate portion 32 is formed with a receiving tube portion 35 that extends downward and has an inner diameter equal to the inner diameter of the inner tube portion 24 of the inner plug member 21. Further, a discharge cylinder 36 whose inside is the discharge port 14 is provided through the upper plate portion 32.
- An inner seal cylinder portion (seal portion) 37 extending downward from the overcap 16 is fitted into the discharge port 14.
- the axial direction of the discharge port 14 coincides with the container axis O direction.
- an outer fitting cylinder portion 40 which is a cylindrical member fitted on the communication cylinder portion 22 of the inner plug member 21 is disposed.
- the outer fitting cylinder part 40 is arranged coaxially with the container axis O, and the lower end part of the outer fitting cylinder part 40 is fitted on the communication cylinder part 22 and in the inner cylinder part 24 of the inner plug member 21.
- the upper end part of the outer fitting cylinder part 40 is fitted in the receiving cylinder part 35 of the main body cylinder member 23.
- An annular air valve portion 41 projecting outward in the radial direction is formed at an intermediate portion of the outer fitting tube portion 40 in the container axis O direction.
- the air valve portion 41 is disposed so as to cover the space between the receiving tube portion 35 and the connecting ring portion 33 from below.
- the air valve portion 41 is elastically deformable, and switches between communication between the intake hole 19 and the outside air introduction hole 34 and blocking of the communication.
- the inner plug member 21 is formed with a communication hole 43 that allows the discharge port 14 and the inside of the inner container 11 to communicate with each other.
- the communication hole 43 is configured by the inside of the communication cylinder portion 22 and is disposed coaxially with the container axis O. As a result, the container axis O direction and the axial direction of the communication hole 43 coincide.
- the communication hole 43 is positioned below the discharge port 14, that is, inside the inner container 11 along the container axis O direction. Furthermore, the internal volume of the communication hole 43 is larger than the internal volume of the discharge port 14.
- valve body 44 is fitted in the communication hole 43 so as to be slidable along the container axis O direction, and is elastically displaced along the container axis O direction to open and close the communication hole 43. Is arranged.
- the valve body portion 44 is formed in a bottomed cylindrical shape that is disposed coaxially with the container axis O, and the upper end portion of the peripheral edge thereof is an annular flange portion 44a that protrudes radially outward, and the valve body portion 44 ( The flange portion 44 a abuts on the upper end opening surface of the communication cylinder portion 22 and blocks communication between the through hole 42 and the communication hole 43.
- a projecting portion 44b with which the lower end portion 37a of the inner seal cylinder portion 37 abuts is formed at the center portion of the valve body portion 44 (see FIG. 1).
- the upper end of the peripheral edge of the valve body 44 is located above the upper end of the communication cylinder 22, and the upper end of the peripheral edge of the valve body 44 is elastic to connect the valve body 44 and the externally fitted cylinder 40.
- One end of the connecting piece 45 is connected.
- a plurality of elastic connecting pieces 45 are provided at intervals in the circumferential direction, and three elastic connecting pieces 45 are provided in the illustrated example, and each elastic connecting piece 45 extends curvedly along the circumferential direction. Further, the positions of both ends of the elastic connecting piece 45 in the container axis O direction are the same.
- the valve body part 44, the external fitting cylinder part 40, the elastic connection piece 45, and the air valve part 41 are integrally molded.
- the elastic connecting piece 45 allows the valve body portion 44 to be displaced along the container axis O direction by elastically deforming (in this specification, the elastic connecting piece 45 is elastically deformed in this way.
- the displacement of the valve body 44 is expressed as an elastic displacement).
- the elastic connecting pieces 45 are arranged at equal intervals in the circumferential direction. If the elastic connecting pieces 45 are arranged at equal intervals in this way, the valve body 44 when elastically displaced is prevented from being inclined (twisted) with respect to the plane perpendicular to the container axis O. Thus, the smooth displacement of the valve body 44 can be assisted (see FIG. 7).
- the elastic connecting piece 45 When the valve body 44 is elastically displaced, the elastic connecting piece 45 is in a state of being inclined as a whole while being elastically deformed by being twisted in part (see FIG. 7). At this time, a part of the elastic connecting piece 45 itself is twisted (twisted), and the whole is extended according to the state, and the elastic restoring force of the elastic connecting piece 45 causes the valve body portion 44 to move. It acts as a force for restoring displacement (return) to the position before displacement. It should be noted that the valve body 44 may be rotated in the circumferential direction (clockwise or counterclockwise) around the container axis O during the elastic displacement or restoring displacement.
- the elastic connecting piece 45 of the present embodiment is curved and extends along the circumferential direction as described above, and the inner side of the inner container 11 along the initial state of the valve body 44 or the container axis O direction. Between the valve body portion 44 and the outer fitting cylinder portion 40 (in this embodiment, between the flange portion 44a of the valve body portion 44 and the inner peripheral surface of the outer fitting cylinder portion 40). ) In a succinctly narrow space.
- the discharge container 10 including the overcap 16 as in the present embodiment has a structure for avoiding the overflow of the contents M when the overcap 16 is closed to be in a covered state. Is also preferable. Hereinafter, such a structure will be described with a specific example.
- the annular upper end surface of the communication cylinder portion 22 is in contact with an annular flange portion 44 a provided at the upper peripheral edge of the valve body portion 44 to receive the valve body portion 44. It functions as a seat (valve retainer) 22a.
- the bottom surface of the valve body portion 44 may or may not be in contact with a portion of the plug body 47 that is located on the inner side in the radial direction with respect to the communication tube portion 22.
- a flow permission groove 44c that allows the content M to flow is formed in a part of the valve body portion 44 that contacts the valve seat 22a (see FIG. 2).
- the flow allowance groove 44c After the valve body 44 is seated on the valve seat 22a, the flow allowance groove 44c returns the content M remaining in the inner space 46 into the inner container 11, and in the final stage, the content M is caused by surface tension. It is preferable to set the flow allowance groove 44c to a size that blocks (blocks air flow). It should be noted that at least a part of the contents remaining in the inner space 46 may be configured to be returned to the inner container by the flow allowance groove 44c. There are no particular limitations on the specific shape and number of the flow permitting grooves 44c.
- a flat valve body 44 having a substantially circular shape in plan view is employed in the discharge container 10 shown in FIGS. 3 and 4.
- a part of the valve body portion 44 that comes into contact with the valve seat 22a is formed with a flow permission groove 44c that allows the content M to flow (see FIGS. 3 and 4).
- the flow allowance groove 44c also returns the contents M remaining in the inner space 46 into the inner container 11 after the valve body portion 44 is seated on the valve seat 22a, and in the final stage, the contents are caused by surface tension.
- M is set to a size that blocks the flow-permissible groove 44c (blocks air flow).
- the flow-permissible groove 44c may be provided on the back surface of the valve body 44 in a straight line from the outer edge to the outer edge in the radial direction, for example, to have a length equal to the diameter, or from the outer edge to the central portion of the back surface. It may be a length up to an arbitrary position.
- bulb seat 22a is also provided with a flow permission groove
- the operation of the discharge container 10 configured as described above will be described.
- the overcap 16 is removed from the discharge cap 15.
- the discharge container 10 tilted so that the discharge port 14 faces downward (see FIG. 5) (see FIG. 5)
- the discharge container 10 is pushed inward in the radial direction to be squeezed (elastically deformed), and the inner container 11 is deformed together with the outer container 12 to reduce the volume.
- the communication hole 43 is opened by being elastically displaced toward the outside of the inner container 11 along the container axis O direction. As a result, the contents M in the inner container 11 are discharged to the outside through the through hole 42, the communication hole 43, the outer fitting cylinder portion 40, and the discharge port 14 (see FIG. 5).
- the inner container 11 follows the outer container 12. Then try to restore and transform. Then, the pressure in the inner container 11 is reduced and a negative pressure is generated, and this negative pressure acts on the valve body part 44, so that the valve body part 44 is placed inside the inner container 11 along the container axis O direction. Therefore, it can be restored and displaced smoothly.
- the discharge container 10 of the present embodiment is made of polyethylene terephthalate resin for both the inner container 11 and the outer container 12, and thus has a cosmetic property that can clearly show the color of the contents M as it is. It can be reused (recycled) after use. Moreover, the discharge container 10 of this embodiment is excellent in the fragrance retention property (performance which retains the fragrance of the contents) as compared with a conventional discharge container made of PP or the like.
- the discharge container 10 after the content M is discharged, the content M in the discharge port 14 is drawn into the inner space 46 and the air A is sucked into the discharge port 14 from the outside. Therefore, it is possible to suppress the contents M that have not been returned to the inner container 11 from remaining in the discharge port 14. Thereby, after discharge of the content M, it can suppress that the content M leaks from the discharge outlet 14.
- FIG. 1
- the through hole 42 has a smaller diameter than the communication hole 43, even if the valve body portion 44 is unintentionally displaced toward the inside of the inner container 11 along the axial direction, the valve body portion 44 is not connected to the plug body. In 47, it comes into contact with a portion located on the inner side in the radial direction with respect to the communication cylinder portion 22, and the displacement of the valve body portion 44 can be restricted.
- the inner seal cylinder part 37 is provided in the overcap 16, it can suppress that the content M leaks out from the discharge outlet 14 in the state which closed the overcap 16.
- FIG. 15 after the contents M are discharged, the contents M that have not been returned to the inner container 11 are less likely to remain in the discharge port 14, so that the overcap 16 is discharged after the contents M are discharged. 15, when the inner seal cylinder portion 37 is fitted into the discharge port 14, the content M is pushed out of the discharge port 14 by the inner seal cylinder portion 37, or the content is stored in the inner seal cylinder portion 37. It can suppress that the thing M adheres.
- the discharge container 10 having the air valve portion has been described, but the present invention can also be applied to a discharge container that does not include the air valve portion. That is, for example, in a discharge container having a double structure without an air valve portion and having an extremely thin outside air introduction hole, a part or all of the inner container 11 and the outer container 12 constituting the container body 13 are made of polyethylene terephthalate resin. Also good.
- the discharge container 10 as described above can be applied when the contents M are various liquid materials including liquid food.
- the liquid food include soy sauce-containing seasonings such as soy sauce and soy sauce processed products, and other seasonings.
- a container body 13 made of polyethylene terephthalate resin was prototyped, and the actual thicknesses of the inner container 11 and the outer container 12 were measured. The measurement was performed based on the following equipment, measurement method, and the like.
- the unit is [mm], and ⁇ 1> to ⁇ 4> represent four locations on the extension line of the shoulder rib. Note that the mold seam (“parting line”) is on two of the four ribs, and the remaining ribs are located 90 ° away from the parting line. In general, the thickness of the container is measured using a parting line as a mark.
- the average value and standard deviation of the thickness in each position of the inner container were as follows. At a distance of 150mm from the bottom, the average value 0.073, standard deviation 0.010536 At a distance of 120mm from the bottom, the average value 0.084, standard deviation 0.011295 Average position 0.088, standard deviation 0.022465 at a distance of 90mm from the bottom At a distance of 60mm from the bottom, the average value is 0.082, the standard deviation is 0.026038 Average value 0.096, standard deviation 0.020421 at a distance of 30mm from the bottom
- the average value and standard deviation of the thickness in each position of the outer container were as follows. At a distance of 150 mm from the bottom, the average value is 0.254 and the standard deviation is 0.006994 At a distance of 120mm from the bottom, the average value is 0.268 and the standard deviation is 0.016197. At a distance of 90mm from the bottom, the average value is 0.275 and the standard deviation is 0.016215. At a distance of 60 mm from the bottom, the average value is 0.275 and the standard deviation is 0.046292. At a distance of 30mm from the bottom, the average value is 0.280 and the standard deviation is 0.020172.
- a discharge container (hereinafter, also referred to as “synthetic resin multiple bottle”) 101 of the present embodiment includes an outer shell bottle 102 that can be restored to its original shape against deformation caused by pressing, and an outer shell.
- the inner container body 103 is accommodated inside the bottle 102 and is deformed by pressing.
- the synthetic resin multiple bottle 101 is used as a container for storing, for example, 300 to 1000 ml of contents.
- Examples of the synthetic resin forming the synthetic resin multi-bottle 101 include synthetic resins mainly composed of polyesters composed of aromatic polycarboxylic acids and aliphatic polyhydric alcohols, and polyethylene based on ethylene terephthalate chains.
- a terephthalate resin is particularly suitable, but not limited thereto.
- the synthetic resin mainly composed of the polyester has higher toughness as the molecular weight increases, a resin having an intrinsic viscosity of at least 0.7 is suitable as the synthetic resin forming the multiple bottle 101 made of synthetic resin.
- the outer shell bottle 102 that does not directly contact the contents can be made of a recycled synthetic resin of a resin that has been used as a synthetic resin bottle for beverages and foods. It can be.
- the outer shell bottle 102 is connected to the cylindrical outer opening 104, the shoulder 105 that gradually increases in diameter from the lower end of the outer opening 104, the body 106 connected to the shoulder 105, and the body 106. And a bottom 107 that gradually decreases in diameter.
- the outer shell bottle 102 has a bottom recess 108 that swells inside the outer shell bottle 102 on the inner peripheral side of the bottom 107 and imparts self-supporting property to the synthetic resin multiple bottle 101.
- the bottom 107 and the bottom recess 108 are provided. Between the two is a grounding portion 109.
- the outer opening portion 104 includes a male screw portion 110 and a support ring 111 on the outer peripheral surface, and the shoulder portion 105 has a first quadrangular pyramid portion 112 at a portion in contact with the outer opening portion 104.
- a body upper part 113 is provided below the shape part 112 so that the diameter gradually increases from the first quadrangular pyramid part 112 toward the body part 106 and the corners of the quadrangular pyramid become smooth.
- the body portion 106 is connected to the upper portion 113 of the body portion, and is connected to the first portion 106a that changes from the expanded diameter to the non-expanded diameter and the lower portion of the first portion 106a and has the same diameter over a predetermined length.
- 106d and a second straight body portion 106d are connected to the bottom portion 107 and include a non-reduced portion 106e before turning to a reduced diameter.
- the cylindrical body part 106c has a circular cross section perpendicular to the axis, and is connected to the first straight body part 106b via the step part 106f, while being connected to the second straight body part 106d via the step part 106g. It is connected.
- the stepped portion 106f is gradually reduced in diameter from the first straight body portion 106b toward the cylindrical body portion 106c, and the stepped portion 106g is gradually reduced in diameter from the second straight body portion 106d toward the cylindrical body portion 106c. is doing.
- cylindrical body portion 106c has a drum shape that gradually decreases in diameter from the lower end portion of the step portion 106f toward the center portion and gradually increases in diameter from the center portion toward the upper end portion of the step portion 106g.
- drum 106c is provided with the some rib 114 along the axial direction.
- a portion of the bottom portion 107 that is in contact with the grounding portion 109 is a second quadrangular pyramid portion 115, and the second quadrangular pyramid portion 115 extends from the second quadrangular pyramid portion 115 above the second quadrangular pyramid portion 115.
- a body lower portion 116 is provided which gradually increases in diameter toward the portion 106d and smoothes the corners of the quadrangular pyramid.
- Each of the first and second quadrangular pyramid portions 112 and 115 has a quadrangular cross section perpendicular to the axis, and an apex is provided with R, and the apexes are provided with ridge lines 112a and 115a. .
- the ridge line 115a is continuous with the extension of the ridge line 112a.
- the inner container body 103 is connected to the cylindrical inner mouth portion 117 disposed on the inner peripheral side of the outer mouth portion 104 and the inner mouth portion 117, and the shoulder portion 105 and the trunk portion 106 of the outer shell bottle 102.
- the inner port portion 117 includes an extension portion 119 that extends upward from the upper end of the outer port portion 104 and a flange portion 120 that protrudes radially outward from the extension portion 119. The portion 120 is locked to the upper end edge of the outer opening portion 104.
- the inner opening 117 is provided with a vertical groove 121 on the outer peripheral surface.
- the vertical groove 121 is connected to a horizontal groove 122 formed on the lower surface of the flange 120, and the horizontal groove 122 is open to the outside at the outer peripheral edge of the flange 120.
- the longitudinal groove 121 and the lateral groove 122 form an air passage 123 for introducing outside air between the outer shell bottle 102 and the inner container body 103.
- the synthetic resin multiplex bottle 101 of the present embodiment accommodates contents (not shown) in the inner container body 103 when in use, while a not-shown check (not shown) is provided in the container mouth part composed of the outer mouth part 104 and the inner mouth part 117.
- An extraction cap with a valve is attached.
- the synthetic resin multiplex bottle 101 tilts the outer opening portion 104 and the inner opening portion 117 downward, and grips and presses the cylindrical body portion 106c of the outer shell bottle 102. If it does in this way, the said content will be poured out from the inner opening part 117 via the said non-return valve by folding the inner container main body 118, without reducing a surface area, and carrying out volume reduction deformation.
- the inner container body 103 contains 3 to 8% by mass of an oxygen barrier agent in the resin constituting the inner container body 103, and dissolved oxygen is removed. Dissolved oxygen of the distilled water after full filling with distilled water, sealing the inner opening 117, keeping the air passage between the outer shell bottle and the inner container body at a temperature of 20 ° C. for 60 days Oxygen permeability with an amount of 3 ppm or less is provided.
- the multiple bottle 101 made of synthetic resin can reduce oxygen in the outside air that permeates the inner container body 118 and enters the inside, and is a liquid containing soy sauce contained in the inner container body 118. It is possible to reliably prevent the contents of the seasoning from being altered by oxygen or the like in the outside air.
- the oxygen barrier agent preferably contains a polyamide-based resin and a deoxidizing material.
- the polyamide-based resin include a resin containing a polymer containing m-xylylenediamine monomer units, p-xylylenediamine monomer units, or a mixture thereof.
- the oxygen scavenger include at least one compound selected from the group consisting of cobalt, iron, nickel, copper, manganese and a mixture thereof, or a salt or complex thereof.
- the oxygen barrier agent include valOR (trade name) manufactured by Valsper Sourcing Incorporated.
- the synthetic resin-made multiple bottle 101 of the present embodiment is an outer preform obtained by injection molding of a synthetic resin composition mainly composed of a polyester composed of, for example, an aromatic polycarboxylic acid and an aliphatic polyhydric alcohol.
- An inner preform obtained by injection molding of a synthetic resin composition mainly comprising the polyester containing the oxygen barrier agent in an amount of 3% by mass or more, preferably in the range of 3 to 10% by mass is disposed on the inner peripheral side of
- the outer preform and the inner preform can be simultaneously blow molded.
- volume reduction deformation an inner container body that is deformed by volume reduction by pressing
- a synthetic resin multiple bottle is known in which outside air is introduced between the shell bottle and the inner container body (see, for example, Japanese Patent Application Laid-Open No. 2017-065712).
- the synthetic resin multiplex bottle presses the body portion of the outer shell bottle, thereby reducing the volume of the inner container body and discharging the contents contained in the inner container body from the mouth,
- outside air is introduced between the outer bottle and the inner container body by the action of a check valve provided separately.
- the outer shell bottle returns to its original shape due to the external air pressure, while the inner container body is maintained in a reduced volume deformed state.
- the outside air since the outside air does not enter the inside of the inner container body from the mouth, it is possible to prevent the contents contained in the inner container body from being altered by oxygen or the like in the outside air. It is considered possible.
- polyethylene multiple containers are inferior in transparency and have a problem that the contents are difficult to see.Furthermore, in liquid seasonings containing soy sauce or soy sauce, color deterioration due to invading oxygen during long-term storage, deterioration deterioration such as flavor As a countermeasure to suppress this, further improvement of the oxygen barrier property of the multiple container is required. Therefore, as an alternative to the polyethylene resin multiple bottle, a polyester resin multiple bottle using PET resin, which is superior in oxygen barrier property and transparency as compared with polyethylene resin, for the outer shell bottle and the inner container body has been studied.
- the synthetic resin multiple bottle 101 of the present embodiment reduces the volume of the inner container body 103 by pressing and deforming the body portion of the outer shell bottle 102, The contents stored in the container 103 are poured out from the inner opening 117. Thereafter, when the pressing of the outer shell bottle 102 is released, outside air is introduced between the outer shell bottle 102 and the inner container body 103 from the vent passage 123, and the outer shell bottle 102 is restored to its original shape by an external pressure. On the other hand, the inner container body 103 is maintained in a reduced volume deformed state. Therefore, in the synthetic resin multiplex bottle 101 of the present embodiment, it is possible to prevent outside air from entering the inside of the inner container body 103 from the inner mouth portion 117.
- an active barrier agent or a passive barrier material can be used as an oxygen barrier agent that can be blended with a polyester resin and can block and trap oxygen.
- a known oxygen barrier agent can be used.
- it is suitable to use a polyamide-based resin and an oxygen scavenger in the polyester resin constituting the inner container body 103 that contains the contents, and the amount used is the required quality of the contents. It is necessary to set appropriately according to the situation.
- the synthetic resin multiple bottle 101 of the present embodiment contains the contents of the liquid seasoning containing soy sauce
- the synthetic resin multiple bottle 101 uses distilled water from which dissolved oxygen has been removed in the inner container body 103.
- the inner opening 117 is sealed, and the distilled water after being stored at a temperature of 20 ° C. for 60 days with the air passage 123 between the outer shell bottle 102 and the inner container body 103 opened is stored. It is suitable to appropriately blend an oxygen barrier agent into the resin forming the inner container body 103 so as to provide oxygen permeability with a dissolved oxygen amount of 3 ppm or less.
- the synthetic resin multiplex bottle 101 of the present embodiment is filled with distilled water from which dissolved oxygen has been removed into the inner container body 103 to seal the inner opening 117, and the outer shell bottle 102 and the inner container body.
- the oxygen permeability is such that the amount of dissolved oxygen in the distilled water becomes 3 ppm or less after the vent passage 123 between the first and second 103 is kept open at a temperature of 20 ° C. for 60 days. Therefore, even when outside air is introduced between the outer shell bottle 102 and the inner container body 103 from the ventilation passage 123 when the outer shell bottle 102 is released from the pressure, oxygen or the like in the outer air is Intrusion into the inner container body 103 of the synthetic resin multiple bottle 101 can be reduced.
- the state of use with multiple bottles can keep the dissolved oxygen concentration lower for a long time.
- the multiple bottle 101 made of the synthetic resin of the present embodiment the contents made of the liquid seasoning containing the soy sauce contained in the inner container body 103 are in the open air by using the multiple bottle. It is possible to more reliably prevent the alteration due to oxygen or the like.
- the synthetic resin multiplex bottle 101 of this embodiment has a color tone due to oxygen of the liquid seasoning contained in the inner container body 103. Changes such as changes cannot be sufficiently reduced or prevented.
- the synthetic resin multiplex bottle 101 of the present embodiment has an oxygen barrier agent in the resin constituting the inner container body 103 in an amount of 3% by mass or more, preferably 3 to 10% by mass. It is suitable to contain.
- the oxygen barrier agent contained in the resin constituting the inner container body 103 is less than 3% by mass, sufficient penetration of oxygen in the outside air into the inner container body 103 of the synthetic resin multiple bottle 101 is sufficient. Cannot be reduced. Moreover, even if the oxygen barrier agent contained in the resin constituting the inner container body 103 exceeds 10% by mass, the oxygen barrier property does not change much.
- the oxygen barrier agent contains a polyamide-based resin and a deoxidizing material.
- the oxygen barrier agent prevents the penetration of oxygen in the outside air into the inner container body 103 by blocking the penetration of oxygen by the polyamide-based resin or by combining with the oxygen into which the deoxidizing material has entered. Can be prevented.
- the synthetic resin multiplex bottle is made of polyester resin, so that the oxygen barrier agent is easily dispersed uniformly in the polyester resin constituting the inner container body 103, coupled with the oxygen barrier property of the polyester resin, Excellent oxygen barrier effect.
- Example 2-1 In this example, 3% by mass of an oxygen barrier agent (trade name: valOR A115J) manufactured by Valsper Sourcing, Inc. on the inner peripheral side of an outer preform obtained by injection molding of a polyethylene terephthalate resin composition
- the inner preform obtained by injection molding of the polyethylene terephthalate resin composition to be placed is disposed, and the outer preform and the inner preform are simultaneously blow-molded to have the shape shown in FIGS.
- a synthetic resin multiple bottle 101 having an internal volume of 500 ml was manufactured.
- the inner container body 103 of the synthetic resin multiple bottle 101 obtained in the present embodiment contains 3% by mass of the oxygen barrier agent with respect to the resin constituting the inner container body 103.
- the air passage 123 of the synthetic resin multiple bottle 101 obtained in this example is opened, an oxygen concentration measurement sensor chip is attached to the inner surface of the inner container body 118, and distilled water is applied to the inner container body 103. Filled completely.
- the oxygen dissolved in the distilled water is removed by replacement with an inert gas, and the inner port 117 is kept at a temperature of 20 ° C. for 60 days in a state sealed with an aluminum foil for heat sealing,
- the dissolved oxygen concentration of the distilled water as an index of oxygen permeability was measured with a sensor chip attached in advance to obtain the dissolved oxygen amount. This measurement was performed with an oxygen concentration measuring apparatus (trade name: Fibox3-Trace) manufactured by Presense Co., Ltd. The results are shown in Table 1.
- the air passage 123 of the synthetic resin multiple bottle 101 obtained in this example is opened, and the inner container body 103 is fully filled with soy sauce (manufactured by Kikkoman Corporation), and the inner opening 117 is heat-sealed.
- soy sauce manufactured by Kikkoman Corporation
- the color tone stability of the contents was visually evaluated after being kept at a temperature of 20 ° C. for 60 days. The results are also shown in Table 1.
- Example 2-2 it was exactly the same as Example 1 except that an inner preform obtained by injection molding of a polyethylene terephthalate resin composition containing 5% by mass of the oxygen barrier agent used in Example 1 was used. 9 and 10 were manufactured, and a synthetic resin multiplex bottle 101 having an internal volume of 500 ml was manufactured. The inner container body 103 of the synthetic resin multiple bottle 101 obtained in this example contains 5% by mass of the oxygen barrier agent.
- Example 1 Next, exactly the same as in Example 1 except that the synthetic resin multiple bottle 101 obtained in this example was used, while measuring the dissolved oxygen concentration of distilled water as an index of oxygen permeability, The color tone stability of the contents was visually evaluated in exactly the same manner as in Example 1. The results are shown in Table 1.
- Example 2-3 it was exactly the same as Example 1 except that an inner preform obtained by injection molding of a polyethylene terephthalate resin composition containing 7% by mass of the oxygen barrier agent used in Example 1 was used. 9 and 10 were manufactured, and a synthetic resin multiplex bottle 101 having an internal volume of 500 ml was manufactured. The inner container body 103 of the synthetic resin multiplex bottle 101 obtained in this example contains 7% by mass of the oxygen barrier agent.
- Example 1 Next, exactly the same as in Example 1 except that the synthetic resin multiple bottle 101 obtained in this example was used, while measuring the dissolved oxygen concentration of distilled water as an index of oxygen permeability, The color tone stability of the contents was visually evaluated in exactly the same manner as in Example 1. The results are shown in Table 1.
- Example 2-4 it was exactly the same as Example 1 except that an inner preform obtained by injection molding of a polyethylene terephthalate resin composition containing 8% by mass of the oxygen barrier agent used in Example 1 was used. 9 and 10 were manufactured, and a synthetic resin multiplex bottle 101 having an internal volume of 500 ml was manufactured. The inner container body 103 of the synthetic resin multiplex bottle 101 obtained in this example contains 8 mass% of the oxygen barrier agent.
- Example 1 Next, exactly the same as in Example 1 except that the synthetic resin multiple bottle 101 obtained in this example was used, while measuring the dissolved oxygen concentration of distilled water as an index of oxygen permeability, The color tone stability of the contents was visually evaluated in exactly the same manner as in Example 1. The results are shown in Table 1.
- Example 2-5 it was exactly the same as Example 1 except that an inner preform obtained by injection molding of a polyethylene terephthalate resin composition containing 10% by mass of the oxygen barrier agent used in Example 1 was used. 9 and 10 were manufactured, and a synthetic resin multiplex bottle 101 having an internal volume of 500 ml was manufactured.
- the inner container body 103 of the synthetic resin multiple bottle 101 obtained in this example contains 10% by mass of the oxygen barrier agent.
- the synthetic resin multiple bottle 101 obtained in this example showed a tendency for the transparency of the inner container body 103 to slightly decrease.
- Example 1 Next, exactly the same as in Example 1 except that the synthetic resin multiple bottle 101 obtained in this example was used, while measuring the dissolved oxygen concentration of distilled water as an index of oxygen permeability, The color tone stability of the contents was visually evaluated in exactly the same manner as in Example 1. The results are shown in Table 1.
- Example 2 In this comparative example, exactly the same as in Example 1 except that an inner preform obtained by injection molding of a polyethylene terephthalate resin composition containing no oxygen barrier agent used in Example 1 was used. 9 and the shape shown in FIG. 10, and the synthetic resin multiple bottle 101 having an internal volume of 500 ml was manufactured. The inner container body 103 of the synthetic resin multiple bottle 101 obtained in this comparative example does not contain the oxygen barrier agent at all.
- Example 1 Next, exactly the same as Example 1 except that the synthetic resin multiple bottle 101 obtained in this comparative example was used, while measuring the dissolved oxygen concentration of distilled water as an index of oxygen permeability, The color tone stability of the contents was visually evaluated in exactly the same manner as in Example 1. The results are shown in Table 1.
- the oxygen permeability is such that the amount of dissolved oxygen in the distilled water is 3 ppm or less after being fully filled with distilled water from which dissolved oxygen has been removed and the inner port 117 is sealed and kept at a temperature of 20 ° C. for 60 days.
- the synthetic resin multi-bottle 101 of Examples 1 to 4 including the above the synthetic resin multi-bottle 101 of the comparative example having an oxygen permeability that the dissolved oxygen amount of the distilled water exceeds 3 ppm and becomes 7.0 ppm or more. It is clear that the color tone stability of the contents is superior to that of the above, and an excellent effect can be obtained with respect to the prevention of deterioration of the contents.
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Abstract
Description
内容物が充填されるとともに該内容物の減少に伴いしぼみ変形する可撓性の内容器、および該内容器が内装されており、該内容器との間に外気を吸入するための吸気孔が形成された外容器を有する容器本体と、
内容物を吐出する吐出口が天面部に形成されており、該容器本体の口部に装着される吐出キャップと、
外部と吸気孔とを連通する外気導入孔と、を備え、
内容器および外容器がポリエチレンテレフタレート樹脂で構成されている、というものである。
吐出容器10は、内容物M(図5参照)が収容されるとともに内容物Mの減少に伴いしぼみ変形する内容器11、および内容器11が内装されるとともに弾性変形可能な外容器12を備える容器本体13と、容器本体13の口部13aに装着され、内容物Mを吐出する吐出口14が形成された吐出キャップ15と、吐出キャップ15に着脱自在に配設されたオーバーキャップ16と、を備えている(図1、図8等参照)。
上記のように、ポリエチレンテレフタレート樹脂が、内容物Mの保存性を更に高める観点から、酸素吸収剤を含んでいてもよい。酸素吸収剤はポリエチレンテレフタレート樹脂の内部又は表面に配置できるものであれば特に限定されないが、例えば、特許第5161462号公報(国際公開第2005/083003号公報)において開示されているようなポリアミド材料及び脱酸素材料を有するもの(ポリアミド/遷移金属触媒系の酸素吸収剤ともいう)を使用することができる。その他の公知の無機系の酸素吸収剤(例えば、還元鉄と亜硫酸ナトリウム)や、有機系の酸素吸収剤(例えば、アスコルビン酸類、エチレン系不飽和炭化水素/遷移金属触媒系、シクロヘキセン側鎖含有ポリマー/遷移金属触媒系)も使用することができる。酸素吸収剤は樹脂中に練り込まれていることが好ましい。酸素吸収剤の種類や配合量は、当業者であれば、所望とするバリア機能などの効果に応じて適宜選択することができる。例えば、ポリアミド/遷移金属触媒系の酸素吸収剤をポリエチレンテレフタレート樹脂に対して0.1~20重量%、好ましくは1~10重量%、より好ましくは1~3重量%配合してもよい。
上筒部17のうち、外容器12で構成された部分(以下、外上筒部という)17aの外周面には雄ねじ部29が形成されている。また、外上筒部17aにおいて、雄ねじ部29より下側に位置する部分には、内容器11との間に外気が吸入される吸気孔19が形成されている。雄ねじ部29において吸気孔19の上側に位置する部分には、容器軸O方向に延在する連通溝20が形成されている。
中栓部材21は、外周縁部が容器本体13の口部13aの開口端上に配置された栓本体47と、該栓本体47から立設された連通筒部22と、を備えている。
本体筒部材23の周壁部23aの内周面には、容器本体13の口部13aの雄ねじ部29に螺着された雌ねじ部30が形成されている。また周壁部23aのうち、雌ねじ部30が形成されたねじ部分よりも下側に位置する下端部内には、容器本体13の口部13aにおける下筒部18が気密状態で嵌合され、上記ねじ部分よりも上側に位置する上端部内には、中栓部材21の外筒部26が嵌合されている。
さらに上板部32には、内部が上記吐出口14とされた吐出筒36が貫設されている。
弁体部44は、容器軸Oと同軸に配置された有底筒状に形成され、その周縁上端部は径方向外方に突出する環状のフランジ部44aとされており、弁体部44(フランジ部44a)が連通筒部22の上端開口面上に当接し、貫通孔42と連通孔43との連通を遮断している。
また、弁体部44の中央部には、内シール筒部37の下端部37aが当接する突出部44bが形成されている(図1参照)。
なお弁体部44、外嵌筒部40、弾性連結片45および空気弁部41は一体に成形されている。
流通許容溝44cの具体的な形状や個数は特に限定されない。
当該吐出容器10から内容物Mを吐出するときには、まず、吐出キャップ15からオーバーキャップ16を外す。その後、吐出口14が下方を向くように吐出容器10を傾けて吐出姿勢にした状態で(図5参照)、吐出容器10を径方向の内側に押し込んでスクイズ変形(弾性変形)させ、内容器11を外容器12とともに変形させ減容させる。
また前述のように、内容物Mの吐出後、内容器11に戻されなかった内容物Mが吐出口14内に残存し難くなっているので、内容物Mの吐出後にオーバーキャップ16を吐出キャップ15に装着させ、内シール筒部37を吐出口14内に嵌合させたときに、内シール筒部37により内容物Mが吐出口14から外部に押し出されたり、内シール筒部37に内容物Mが付着したりするのを抑制することができる。
機器:OLYMPUS Magna-Mike 8600
測定金属玉:1/16 IN
測定方法:特に詳しい図示はしていないが肩部には縦方向に4本のリブ(突起)があり、その延長線上4か所について、容器本体13の底部13fから高さ30mmごとに内容器11と外容器12の厚さ(肉厚)を測定した。上記測定により得られた内容器11と外容器12の厚さは、それぞれ以下に示すとおりとなった。なお、単位は[mm]であり、<1>~<4>は、肩部リブの延長線上4か所の各か所を表している。なお、金型の合わせ目(「パーティングライン」)がこの4本のうちの2本のリブ上にあり、残りのリブは、パーティングラインから90°離れた位置にある。一般的にはパーティングラインを目印にして容器の厚さの測定が行われる。
底部からの距離150mmの位置において、<1>0.057、<2>0.075、<3>0.078、<4>0.08
底部からの距離120mmの位置において、<1>0.074、<2>0.087、<3>0.099、<4>0.077
底部からの距離 90mmの位置において、<1>0.067、<2>0.096、<3>0.116、<4>0.073
底部からの距離 60mmの位置において、<1>0.066、<2>0.09、 <3>0.115、<4>0.057
底部からの距離 30mmの位置において、<1>0.081、<2>0.099、<3>0.123、<4>0.079
底部からの距離150mmの位置において、平均値0.073、標準偏差0.010536
底部からの距離120mmの位置において、平均値0.084、標準偏差0.011295
底部からの距離 90mmの位置において、平均値0.088、標準偏差0.022465
底部からの距離 60mmの位置において、平均値0.082、標準偏差0.026038
底部からの距離 30mmの位置において、平均値0.096、標準偏差0.020421
底部からの距離150mmの位置において、<1>0.253、<2>0.246、<3>0.255、<4>0.263
底部からの距離120mmの位置において、<1>0.276、<2>0.256、<3>0.286、<4>0.252
底部からの距離 90mmの位置において、<1>0.278、<2>0.261、<3>0.297、<4>0.265
底部からの距離 60mmの位置において、<1>0.245、<2>0.246、<3>0.267、<4>0.343
底部からの距離 30mmの位置において、<1>0.275、<2>0.27、 <3>0.266、<4>0.31
底部からの距離150mmの位置において、平均値0.254、標準偏差0.006994
底部からの距離120mmの位置において、平均値0.268、標準偏差0.016197
底部からの距離 90mmの位置において、平均値0.275、標準偏差0.016215
底部からの距離 60mmの位置において、平均値0.275、標準偏差0.046292
底部からの距離 30mmの位置において、平均値0.280、標準偏差0.020172
底部からの距離150mmの位置において、厚さ0.0725
底部からの距離120mmの位置において、厚さ0.08425
底部からの距離 90mmの位置において、厚さ0.088
底部からの距離 60mmの位置において、厚さ0.082
底部からの距離 30mmの位置において、厚さ0.0955
底部からの距離150mmの位置において、厚さ0.25425
底部からの距離120mmの位置において、厚さ0.2675
底部からの距離 90mmの位置において、厚さ0.27525
底部からの距離 60mmの位置において、厚さ0.27525
底部からの距離 30mmの位置において、厚さ0.28025
図9及び図10に示すように、本実施形態の吐出容器(以下、「合成樹脂製多重ボトル」ともいう)101は、押圧による変形に対して原形復帰可能な外殻ボトル102と、外殻ボトル102の内側に収容され押圧により変形する内容器体103とからなる。合成樹脂製多重ボトル101は、例えば300~1000ミリリットルの内容物を収容する容器として用いられる。
本実施例では、ポリエチレンテレフタレート樹脂組成物の射出成形により得られた外プリフォームの内周側に、ヴァルスパー・ソーシング・インコーポレーテッド社製酸素バリア剤(商品名:valOR A115J)を3質量%含有するポリエチレンテレフタレート樹脂組成物の射出成形により得られた内プリフォームを配置して、該外プリフォームと該内プリフォームとを同時にブロー成形することにより、図9及び図10に示す形状を備え、内容量500ミリリットルの合成樹脂製多重ボトル101を製造した。本実施例で得られた合成樹脂製多重ボトル101の内容器体103は、内容器体103を構成する樹脂に対し3質量%の上記酸素バリア剤を含有している。
結果を表1に示す。
本実施例では、実施例1で用いた酸素バリア剤を5質量%含有するポリエチレンテレフタレート樹脂組成物の射出成形により得られた内プリフォームを用いたことを除いて実施例1と全く同一にして、図9及び図10に示す形状を備え、内容量500ミリリットルの合成樹脂製多重ボトル101を製造した。本実施例で得られた合成樹脂製多重ボトル101の内容器体103は、5質量%の上記酸素バリア剤を含有している。
本実施例では、実施例1で用いた酸素バリア剤を7質量%含有するポリエチレンテレフタレート樹脂組成物の射出成形により得られた内プリフォームを用いたことを除いて実施例1と全く同一にして、図9及び図10に示す形状を備え、内容量500ミリリットルの合成樹脂製多重ボトル101を製造した。本実施例で得られた合成樹脂製多重ボトル101の内容器体103は、7質量%の上記酸素バリア剤を含有している。
本実施例では、実施例1で用いた酸素バリア剤を8質量%含有するポリエチレンテレフタレート樹脂組成物の射出成形により得られた内プリフォームを用いたことを除いて実施例1と全く同一にして、図9及び図10に示す形状を備え、内容量500ミリリットルの合成樹脂製多重ボトル101を製造した。本実施例で得られた合成樹脂製多重ボトル101の内容器体103は、8質量%の上記酸素バリア剤を含有している。
本実施例では、実施例1で用いた酸素バリア剤を10質量%含有するポリエチレンテレフタレート樹脂組成物の射出成形により得られた内プリフォームを用いたことを除いて実施例1と全く同一にして、図9及び図10に示す形状を備え、内容量500ミリリットルの合成樹脂製多重ボトル101を製造した。本実施例で得られた合成樹脂製多重ボトル101の内容器体103は、10質量%の上記酸素バリア剤を含有している。本実施例で得られた合成樹脂製多重ボトル101は、内容器体103の透明性がわずかに低下する傾向が見られた。
本比較例では、実施例1で用いた酸素バリア剤を全く含有しないポリエチレンテレフタレート樹脂組成物の射出成形により得られた内プリフォームを用いたことを除いて実施例1と全く同一にして、図9及び図10に示す形状を備え、内容量500ミリリットルの合成樹脂製多重ボトル101を製造した。本比較例で得られた合成樹脂製多重ボトル101の内容器体103は、上記酸素バリア剤を全く含有していない。
Claims (8)
- 少なくとも二重の容器に内容物が充填される吐出容器であって、当該容器がポリエチレンテレフタレート樹脂で構成されている、吐出容器。
- 内容物が充填されるとともに該内容物の減少に伴いしぼみ変形する可撓性の内容器、および該内容器が内装されており、該内容器との間に外気を吸入するための吸気孔が形成された外容器を有する容器本体と、
内容物を吐出する吐出口が天面部に形成されており、該容器本体の口部に装着される吐出キャップと、
外部と前記吸気孔とを連通する外気導入孔と、を備え、
前記内容器および前記外容器がポリエチレンテレフタレート樹脂で構成されている、吐出容器。 - 前記内容器と前記外容器の一方または両方が、酸素吸収剤を含むポリエチレンテレフタレート樹脂で構成されている、請求項2に記載の吐出容器。
- 当該吐出容器は、前記内容器に溶存酸素を除去した蒸留水を満注充填し内口部を密封し、前記外容器と前記内容器との間の通気路を開放状態として20℃の温度に60日間保持した後の該蒸留水の溶存酸素量が3ppm以下となる酸素透過性を備える、請求項2または3に記載の吐出容器。
- 前記内容器は、当該内容器を構成する樹脂の3~10質量%の範囲の酸素バリア剤を含有する、請求項2から4のいずれか一項に記載の吐出容器。
- 前記酸素バリア剤は、ポリアミド系樹脂と脱酸素材とを含有するものである、請求項5に記載の吐出容器。
- 前記内容物が液状食品である、請求項1から6のいずれか一項に記載の吐出容器。
- 前記内容物がしょうゆ含有調味料である、請求項1から6のいずれか一項に記載の吐出容器。
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