WO2022107825A1 - 容器 - Google Patents
容器 Download PDFInfo
- Publication number
- WO2022107825A1 WO2022107825A1 PCT/JP2021/042279 JP2021042279W WO2022107825A1 WO 2022107825 A1 WO2022107825 A1 WO 2022107825A1 JP 2021042279 W JP2021042279 W JP 2021042279W WO 2022107825 A1 WO2022107825 A1 WO 2022107825A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- elastomer
- container according
- peripheral wall
- cap
- Prior art date
Links
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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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
- B65D77/048—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid and the outer container being of curved cross-section, e.g. cylindrical
- B65D77/0486—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid and the outer container being of curved cross-section, e.g. cylindrical the inner container being coaxially disposed within the outer container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00583—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes the container for the material to be dispensed being deformable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
- B43M11/00—Hand or desk devices of the office or personal type for applying liquid, other than ink, by contact to surfaces, e.g. for applying adhesive
- B43M11/06—Hand-held devices
-
- 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
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/12—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures
- B65D47/122—Threaded caps
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
-
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/04—Articles or materials enclosed in two or more containers disposed one within another
- B65D2577/041—Details of two or more containers disposed one within another
Definitions
- This disclosure relates to containers.
- Japanese Patent Application Laid-Open No. 2019-508236 is a device for applying an adhesive and / or a sealing agent, which comprises a housing for accommodating a container, wherein the housing is a storage space for accommodating the container. Designed as a retractable coating tip connected to the containment space and capable of draining the adhesive and / or sealant, a stable casing for the accommodation space, and a deformable pressure region, said accommodation.
- a device is described comprising at least one region of the housing, which can apply external pressure onto the container which can be placed in space.
- the apparatus described in Japanese Patent Application Laid-Open No. 2019-508236 is a leaf spring in which a deformable pressure region for applying pressure to a container is formed by forming a slit in a housing.
- the device does not take into account the tightness of the housing itself.
- the coating tip portion is not housed in the housing, and the closing cap covers only a part of the coating tip portion. That is, in the device described in Patent Document 1, the airtightness of the container by the housing is not ensured, and the entire coating tip portion is not protected.
- the leaf spring does not bend unless the free end of the leaf spring is pressed, and pressure cannot be applied to the container.
- the present disclosure has been made in view of the above situation, and provides a container having improved air barrier properties and capable of easily discharging the contents of the inner container contained in the outer container.
- the container according to the first aspect is an inner container provided with a nozzle portion for discharging the filled contents, and a tubular outer container made of hard resin containing the inner container and having an opening formed in the outer peripheral wall.
- the outer peripheral wall is provided with an elastomer pressing portion that covers the opening, and a cap that covers the nozzle portion protruding from the outer container and is removable from the outer container.
- the container according to the second aspect is the container according to the first aspect, further including a pedestal at the end of the outer container on the opposite side of the cap.
- the container according to the third aspect is the container according to the first aspect or the second aspect, and the opening covered with the pressing portion is provided in a pair axially symmetrical with respect to the central axis of the outer container.
- the container according to the fourth aspect further has the elastomer connecting portion in which the pair of the pressing portions are integrally connected so as to be wound around the outer peripheral wall of the outer container in the container according to the third aspect.
- the container according to the fifth aspect further has the elastomer extension portion extending from the connecting portion toward the pedestal of the outer container in the container according to the fourth aspect.
- the container according to the sixth aspect is the container according to any one of the first to fifth aspects, and a plurality of ribs are formed on the outer peripheral portion of the cap.
- the container according to the seventh aspect is the container according to any one of the first to sixth aspects, and the outer peripheral wall of the outer container expands in diameter from the end on the cap side toward the pedestal. ing.
- the container according to the eighth aspect is the container according to any one of the first to seventh aspects, and the content thereof is an adhesive.
- the container according to the ninth aspect is the container according to the eighth aspect, and the inner container is made of polyolefin.
- the container according to the tenth aspect is the container according to the ninth aspect, and the cap is made of polyolefin.
- the container according to the eleventh aspect is the container according to any one of the second to tenth aspects, in which the desiccant is provided inside the pedestal.
- the container according to the twelfth aspect is the container according to any one of the first to eleventh aspects, in which a recess is formed on the surface of the pressing portion.
- the container according to the thirteenth aspect is the container according to any one of the first to twelfth aspects, and the pressing portion has a raised portion that is raised from the outer peripheral wall of the outer container.
- the container according to the 14th aspect is the container according to the 13th aspect, and the maximum thickness of the raised portion is within the range of 0.2 mm or more and 1.0 mm or less.
- the container according to the fifteenth aspect is the container according to any one of the first to the fourteenth aspects, and the elastomer has an A hardness of 40 or more and is within the range of less than 80.
- the container according to the 16th aspect is the container according to any one of the 1st to 15th aspects, and the elastomer is transparent in a sample having a thickness of 0.5 mm measured in accordance with JIS Z 0208. Humidity is less than 2.0 g / m 2.24 hr.
- the container according to the 17th aspect is the container according to any one of the 1st to 16th aspects, and the elastomer has an oxygen permeability coefficient of 1.0 ⁇ 10 ⁇ measured in accordance with JIS K 7126. It is less than 15 mol ⁇ m / Pa ⁇ s ⁇ m 2 .
- the opening formed in the outer peripheral wall of the outer container is covered with the pressing portion made of elastomer.
- the pressing portion made of elastomer.
- the cap is attached to the outer container and covers the nozzle portion protruding from the outer container. Therefore, the air barrier property of the container can be improved as compared with the configuration in which the cap is detachably provided on the inner container.
- the inner container is contained in a cylindrical outer container made of hard resin. As a result, even if the container is inadvertently pushed, the contents are suppressed from being ejected from the nozzle portion of the inner container.
- the container can be erected on a workbench or the like with the pedestal facing down and the nozzle portion facing upward.
- the container according to the third aspect when pressing the pair of pressing portions to eject the contents from the nozzle portions, it is easy to pinch and press the pair of pressing portions with the thumb and index finger.
- the peeling of the pressing portion from the outer container is suppressed as compared with the configuration in which the pair of pressing portions are not integrally connected.
- the peeling of the pressing portion from the outer container is suppressed as compared with the configuration having no extension portion.
- the container according to the sixth aspect it is easy to grip the cap when attaching and detaching the cap.
- the diameter of the outer container increases from the end on the cap side toward the pedestal. Therefore, it does not easily fall down when it is placed on a workbench or the like with the nozzle portion facing upward.
- the adhesive filled in the inner container is less likely to deteriorate when not in use.
- the adhesive remaining inside the inner container is hard to cure.
- the adhesive remaining on the tip of the nozzle portion covered with the cap is difficult to cure.
- the internal space of the container can be dried.
- the thumb and the index finger can be fitted to the concave portion by pressing the pressing portion.
- the position of the pressing portion can be determined by fumbling.
- the container according to the fourteenth aspect it is easier to determine the position of the pressing portion by groping as compared with the configuration in which the maximum thickness of the raised portion is less than 0.2 mm. Further, as compared with the configuration in which the maximum thickness of the raised portion exceeds 1.0 mm, it is easy to press the inner container by pressing the pressing portion with the thumb and the index finger.
- the container according to the fifteenth aspect it is easier to adjust the discharge amount of the contents by pressing the pressing portion, as compared with the configuration in which the A hardness of the elastomer is less than 40. Further, as compared with the configuration in which the A hardness of the elastomer is 80 or more, it is easy to adjust the discharge amount of the contents by pressing the pressing portion.
- the water vapor barrier property of the container is improved as compared with the configuration in which the moisture permeability of the elastomer in the sample having a thickness of 0.5 mm is 2.0 g / m 2.24 hr or more.
- the air barrier property of the container is improved as compared with the configuration in which the oxygen permeability coefficient of the elastomer is 1.0 ⁇ 10 -15 mol ⁇ m / Pa ⁇ s ⁇ m 2 or more.
- FIGS. 1 to 10 An example of the container according to the embodiment of the present disclosure will be described with reference to FIGS. 1 to 10.
- the container 10 As shown in FIG. 8, the container 10 according to the present embodiment includes an inner container 20 filled with contents and an outer container 70 that contains and protects the inner container 20. A cap 40 and a pedestal 50 are attached to the outer container 70. Further, the desiccant 60 is housed in the pedestal 50.
- the inner container 20 includes a main body portion 22 and a nozzle portion 24.
- the main body 22 is a bottomed cylindrical member extending in one direction.
- the main body 22 has flexibility.
- the main body 22 has a bottom 22a and an opening 22b formed at an end opposite to the bottom 22a. Further, a male screw portion 22c is formed on the outer peripheral wall of the end portion of the main body portion 22 on the opening 22b side.
- the inside of the main body 22 is filled with a liquid, paste, or jelly-like adhesive as an example of the contents.
- a liquid, paste, or jelly-like adhesive as an example of the contents.
- Specific examples of the adhesive include 2-cyanoacrylate adhesives, epoxy resin adhesives, rubber adhesives, urethane resin adhesives, and silicone resin adhesives.
- the content to be filled in the main body 22 of the inner container 20 in the present disclosure is not limited to the adhesive, and its properties are not limited to liquid, paste, or jelly.
- the contents in the present disclosure include, for example, chemical products such as hardeners, coating agents, shoe polish, wax, foodstuffs such as mountain aoi, ginger, spicy pepper, large ginger, chocolate, toothpaste, cosmetics, daily necessities such as hair dye, ointments, etc. It may be a medicine, a stationery such as a paint, or the like.
- the nozzle portion 24 is a substantially cylindrical member provided at the end portion of the main body portion 22 on the opening 22b side, extending in one direction and having both end portions opened in the longitudinal direction.
- the tip portion 24a on the side opposite to the opening 22b of the main body portion 22 has a tapered diameter.
- the nozzle portion 24 has a diameter-expanded portion 24b, which is a peripheral wall whose diameter is larger than that of the peripheral wall of the other nozzle portions 24, at the end portion of the main body portion 22 on the opening 22b side.
- a female screw portion 24c corresponding to the male screw portion 22c of the main body portion 22 is formed on the inner peripheral wall of the enlarged diameter portion 24b.
- the nozzle portion 24 is connected to the main body portion 22 by screwing the female screw portion 24c to the male screw portion 22c.
- the main body 22 of the inner container 20 has flexibility. As a result, the peripheral wall of the main body 22 is pressed, and the contents such as the adhesive filled in the main body 22 are discharged from the opening on the tip 24a side of the nozzle 24.
- the inner container 20 is preferably made of a material that is inert to the adhesive and does not have permeability or permeability to the adhesive.
- the inner container 20 is preferably formed of, for example, a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer resin, an ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate.
- a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer resin, an ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate.
- a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer resin, an ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate.
- the outer container 70 is a member that contains the inner container 20 with the tip of the nozzle portion 24 protruding.
- the outer container 70 includes a main body portion 72 and an elastomer portion 80.
- the main body 72 is a substantially cylindrical member that extends in one direction and has both ends open in the longitudinal direction.
- the outer peripheral wall of the main body 72 has a substantially tapered diameter from the end of the inner container 20 on the nozzle portion 24 side toward the end on the side opposite to the nozzle portion 24.
- the inner container 20 is inserted into the inside of the main body 72 through an opening on the side opposite to the side where the tip of the nozzle portion 24 of the inner container 20 protrudes.
- the main body portion 72 is outside the enlarged diameter portion 24b of the inner container 20 so that the tip of the nozzle portion 24 of the inner container 20 inserted into the main body portion 72 protrudes. It has a structure that can be fitted to the diameter portion.
- the main body 72 has a male screw portion 72a formed on the outer peripheral wall of the end portion of the inner container 20 on the nozzle portion 24 side. Further, the main body portion 72 has a fitting portion 72b having a structure capable of fitting with the inner wall of the outer peripheral wall of the pedestal 50, which will be described later, at the end portion on the side opposite to the side where the tip of the nozzle portion 24 of the inner container 20 protrudes. Is formed.
- the outer peripheral wall of the main body 72 has a portion on the bottom side of the main body 22 of the inner container 20 with respect to the male screw portion 22c when viewed from the radial direction of the main body 72.
- An opening 74 that penetrates the outer peripheral wall in a substantially rectangular shape is formed at a portion that overlaps with the outer peripheral wall.
- the openings 74 are rectangular when viewed from the radial direction of the main body 72, and are formed in pairs at positions symmetrical with respect to the central axis of the main body 72 on the outer peripheral wall of the main body 72. That is, a pair of openings 74 are provided on the outer peripheral wall of the outer container 70 axially symmetrically with respect to the central axis of the outer container 70.
- the outer peripheral wall of the main body 72 is recessed with respect to the outer peripheral wall at least around the opening 74, and the covering portion 76 is a portion covered with the elastomer portion 80 described later. Is formed.
- the covering portion 76 has a first covering portion 77 formed between the male screw portion 72a and the fitting portion 72b, and a second covering portion 78 formed on the fitting portion 72b.
- the first covering portion 77 is formed so as to be wound around the outer peripheral wall of the main body portion 72 in the circumferential direction around the pair of openings 74.
- the opening 74 is located between the edges on both sides of the first covering portion 77 in the axial direction of the main body portion 72.
- a part of the portion of the first covering portion 77 sandwiched between the pair of openings 74 in the circumferential direction extends along the axial direction so as to be flush with the outer peripheral wall of the main body portion 72.
- a pair of rib portions 77a standing in the radial direction are formed.
- the first covering portion 77 has a groove-shaped first extension groove 77b that extends toward the fitting portion 72b along the axial direction of the outer container and is connected to the second covering portion 78.
- the second covering portion 78 is formed so that a part of the peripheral wall of the fitting portion 72b is wound in an annular shape in the circumferential direction around the outer peripheral wall of the other fitting portion 72b. Further, the second covering portion 78 extends along the axial direction of the outer container 70 toward the first extension groove 77b of the first covering portion 77, and is a groove-shaped second portion that bites into the first extension groove 77b. It has an extension groove 78b.
- the main body 72 is made of hard resin.
- the hard resin forming the main body 72 is preferably a synthetic resin that is inert to the adhesive and does not have permeability or permeability to the adhesive.
- the hard resin forming the main body 72 is preferably a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer resin, an ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate, and a polyolefin-based resin. Resin is more preferred.
- the portion overlapping the main body 22 of the inner container 20 when viewed from the radial direction preferably has a maximum thickness of 1.0 mm or more and within a range of 2.0 mm or less. Further, it is more preferable that the maximum thickness of the portion is 1.2 mm or more and 1.8 mm or less. The maximum thickness of the site in the embodiment is 1.5 mm.
- Cap 40 As shown in FIGS. 1 to 3, 6 and 8, the cap 40 is detachably provided at the end of the outer container 70 on which the nozzle portion 24 of the inner container 20 projects. Further, the cap 40 is a tubular member that covers the nozzle portion 24 of the inner container 20 protruding from the outer container 70. The cap 40 has an outer cylinder portion 42 and an inner cylinder portion 44.
- the outer cylinder portion 42 is a tubular portion in which one end is closed and the other end is open.
- the closed portion of the outer cylinder portion 42 is the top portion 42a.
- a female screw portion 42b corresponding to the male screw portion 72a of the outer container 70 is formed on the inner peripheral portion on the opening side of the outer cylinder portion 42.
- the cap 40 is attached to the outer container 70 by screwing the female screw portion 42b of the outer cylinder portion 42 to the male screw portion 72a of the outer container 70.
- the outer cylinder portion 42 has a tapered diameter increasing from the top portion 42a to the opening.
- the outer cylinder portion 42 is formed with a plurality of ribs 42c that stand in the radial direction from the outer peripheral portion of the outer cylinder portion 42 and extend along the axial direction of the outer cylinder portion 42. Specifically, the outer cylinder portion 42 is formed with four ribs 42c axially symmetric with respect to the central axis of the outer cylinder portion 42.
- the inner cylinder portion 44 is a tubular portion that stands from the inner wall of the top portion 42a of the outer cylinder portion 42 toward the opening of the outer cylinder portion 42.
- the end of the inner cylinder 44 on the opening side of the outer cylinder 42 is open.
- the cap 40 is made of a hard resin.
- the hard resin forming the cap 40 is preferably a synthetic resin that is inert to the adhesive and does not have permeability or permeability to the adhesive.
- the hard resin forming the cap 40 is preferably a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer resin, an ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate, and a polyolefin resin. Is more preferable.
- the pedestal 50 is a cylindrical member detachably provided on the fitting portion 72b of the outer container 70.
- the pedestal 50 has an outer cylinder portion 52, an inner cylinder portion 54, and a connecting portion 56.
- the outer cylinder portion 52 is a tubular portion in which both end portions are open.
- One end of the outer cylinder portion 52 is a fitting portion 52a mounted on the outer container 70 by fitting the inner peripheral wall of the end portion with the outer peripheral wall of the fitting portion 72b of the outer container 70.
- the end of the outer cylinder portion 52 on the opposite side of the fitting portion 52a is the leg portion 52b.
- the end faces of the legs 52b of the outer cylinder portion 52 mounted on the outer container 70 are orthogonal to the central axis of the outer container 70.
- the outer peripheral portion of the outer cylinder portion 52 has an enlarged diameter from the fitting portion 52a side to the leg portion 52b side.
- the inner cylinder portion 54 is a bottomed cylindrical portion that is arranged inside the outer cylinder portion 52 and has an open end on the fitting portion 52a side.
- the connecting portion 56 connects the outer cylinder portion 52 and the inner cylinder portion 54, and the space sandwiched between the outer cylinder portion 52 and the inner cylinder portion 54 is formed between the fitting portion 52a side and the leg portion 52b side. It is a part that is partitioned so as not to ventilate.
- the pedestal 50 is made of hard resin.
- the hard resin forming the pedestal 50 is preferably a synthetic resin that is inert to the adhesive and does not have permeability or permeability to the adhesive.
- the hard resin forming the pedestal 50 is preferably a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer resin, an ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate, and a polyolefin resin. Is more preferable.
- the internal space of the container 10 is in a sealed state. That is, when the pedestal 50 and the cap 40 are attached to the outer container 70, the container 10 has an air barrier property.
- the desiccant 60 is a columnar member housed inside the inner cylinder portion 54 of the pedestal 50.
- the desiccant 60 absorbs moisture contained in the air in the space surrounded by the outer container 70, the cap 40, and the pedestal 50. That is, the desiccant 60 absorbs the moisture contained in the air in the internal space of the container 10.
- the elastomer portion 80 is an elastomer member provided on the outer peripheral wall of the main body portion 72 and covering the covering portion 76.
- the elastomer portion 80 includes a first elastomer portion 82 that covers the first coating portion 77, and a second elastomer portion 90 that covers the second coating portion 78.
- the first elastomer portion 82 is provided so as to cover the first covering portion 77 of the main body portion 72, and is formed so as to be wound around the outer peripheral wall of the main body portion 72 in the circumferential direction.
- the first elastomer portion 82 has a pressing portion 84 and a connecting portion 86.
- the first elastomer portion 82 is formed so that a portion other than the pressing portion 84 is substantially flush with the outer peripheral wall of the main body portion 72.
- the pressing portion 84 is a portion of the first elastomer portion 82 that covers the opening portion 74 of the main body portion 72.
- the pressing portions 84 are formed in pairs corresponding to the pair of openings 74.
- the pressing portion 84 has a raised portion 84a and a recessed portion 84b.
- the raised portion 84a has a substantially rectangular shape when viewed from the radial direction of the main body portion 72, which is raised from the outer peripheral wall of the main body portion 72 in the pressing portion 84. It is the part of.
- the maximum thickness T max of the raised portion 84a in the radial direction of the main body portion 72 is preferably 0.2 mm or more and preferably within the range of 1.0 mm or less. Further, it is more preferable that the maximum thickness T max of the raised portion 84a is in the range of 0.3 mm or more and 0.5 mm or less.
- the maximum radial thickness T max of the raised portion 84a in the embodiment is 0.35 mm.
- the recess 84b is an elliptical recess formed in the central portion of the surface of the raised portion 84a and is concave with respect to the raised portion 84a when viewed in the radial direction.
- the maximum depth of the recess 84b is preferably 0.2 mm or more and preferably within the range of 0.8 mm or less. Further, it is more preferable that the maximum depth of the recess 84b is 0.4 mm or more and within the range of 0.6 mm or less.
- the maximum depth of the recess 84b in the embodiment is 0.5 mm.
- the pressing portion 84 is formed so that the portion of the main body portion 72 on the inner peripheral wall side is substantially flush with the inner peripheral wall of the main body portion 72. Further, the pressing portion 84 is pressed in the radial direction from the outer peripheral side and elastically deformed to reach the main body portion 22 of the inner container 20 so that the outer peripheral wall of the main body portion 22 can be pressed.
- the connecting portion 86 is a portion of the first elastomer portion 82 in which the pair of pressing portions 84 are integrally connected to the first covering portion 77 of the outer peripheral wall of the main body portion 72 so as to be wound in the circumferential direction.
- the connecting portion 86 is formed along the first covering portion 77.
- the connecting portion 86 has a first extension portion 86a formed in the first extension groove 77b of the first covering portion 77.
- the first extension portion 86a extends along the first extension groove 77b toward the fitting portion 72b and is connected to the second elastomer portion 90. That is, the first extension portion 86a of the connecting portion 86 extends toward the pedestal 50 that fits with the fitting portion 72b.
- the first extension portion 86a is an example of the extension portion.
- the second elastomer portion 90 is provided so as to cover the second covering portion 78 of the fitting portion 72b, and is formed so as to be wound around the second covering portion 78 of the outer peripheral wall of the fitting portion 72b in the circumferential direction. ..
- the second elastomer portion 90 is formed in the second extension groove 78b of the fitting portion 72b, and the second extension portion 90 is integrally connected to the first extension portion 86a of the first elastomer portion 82. It has a part 92.
- the second elastomer portion 90 is formed so as to be substantially flush with the outer peripheral wall of the fitting portion 72b.
- the elastomer forming the elastomer portion 80 preferably has flexibility (A hardness), air barrier property (moisture permeability, oxygen permeability coefficient), moldability, and fusion property.
- the elastomer is an elastomer composition X containing an isobutylene-based block copolymer A composed of an isobutylene-based polymer block and an aromatic vinyl-based polymer block and a medium- and low-pressure polyethylene resin B. Is preferable.
- the elastomer portion 80 in this embodiment is formed of the above-mentioned elastomer composition X.
- the isobutylene polymer block is a block containing a structural unit derived from an isobutylene compound (hereinafter, also referred to as an isobutylene compound unit).
- the content of the isobutylene compound unit in all the structural units constituting the isobutylene polymer block is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably, from the viewpoint of water vapor barrier property at high temperature. Is 70% by mass or more.
- the isobutylene-based polymer block may contain a structural unit derived from a monomer other than isobutylene as long as the effects of the present disclosure are not impaired.
- monomers include aliphatic olefins, alicyclic olefins, aromatic vinyls, dienes, vinyl ethers, vinylsilanes, vinylcarbazole, ⁇ -pinene, acenaphthylene and the like.
- the content of the isobutylene-based polymer block is preferably 50 to 90% by mass, more preferably 55 to 85% by mass, and further preferably 60 to 80% by mass in the isobutylene-based block copolymer A.
- the aromatic vinyl-based polymer block contains a structural unit derived from the aromatic vinyl-based compound (hereinafter, also referred to as an aromatic vinyl-based compound unit).
- the aromatic vinyl compound include styrene, ⁇ -methylstyrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 1,3-dimethylstyrene, vinylnaphthalene and the like, and two or more of them. May be used in combination. Of these, styrene, which is easily available, is preferable.
- the content of the aromatic vinyl compound unit in all the structural units constituting the aromatic vinyl polymer block is preferably 80% by mass or more, more preferably 90% by mass or more, still more preferably 95% by mass or more. be.
- the aromatic vinyl-based polymer block may contain a structural unit derived from a monomer other than the aromatic vinyl-based compound as long as the effects of the present disclosure are not impaired.
- monomers include copolymerizable monomers capable of ion-polymerizing such as butene, pentene, hexene, butadiene, isoprene, and methyl vinyl ether.
- the content of the aromatic vinyl-based polymer block is preferably 10 to 60% by mass, more preferably 15 to 50% by mass, still more preferably 20 to 40% in the isobutylene-based block copolymer A from the viewpoint of moldability. It is mass%.
- the weight average molecular weight of the isobutylene block copolymer A is preferably 10,000 or more from the viewpoint of air barrier properties, and preferably 300,000 or less from the viewpoint of flexibility and moldability. From these viewpoints, the weight average molecular weight of the isobutylene block copolymer A is preferably 10,000 to 300,000, more preferably 20,000 to 200,000, still more preferably 30,000 to 100,000. be.
- the A hardness of the isobutylene-based block copolymer A is preferably 10 to 50, more preferably 15 to 45, and even more preferably 20 to 40.
- the density of the isobutylene-based block copolymer A is preferably 0.920 to 0.970 g / cm 3 , more preferably 0.930 to 0.960 g / cm 3 , and even more preferably 0.940 to 0.950 g / cm. It is 3 .
- the content of the isobutylene-based block copolymer A is preferably 25 to 99% by mass, more preferably 25 to 98% by mass, and further preferably 50 to 95% by mass in the elastomer composition X.
- the elastomer composition used in the container of the present disclosure preferably contains a polyethylene resin from the viewpoint of fusion property.
- Polyethylene resin can be roughly divided into medium / low pressure method polyethylene resin and high pressure method polyethylene resin depending on the difference in manufacturing method, but linear high density polyethylene resin (HDPE) by medium / low pressure method is longer by high pressure method.
- a low density polyethylene resin (LDPE) with chain branching can be obtained.
- High-density polyethylene resin has high air barrier properties
- low-density polyethylene resin has low air barrier properties.
- L-LDPE linear low density polyethylene resin
- the air barrier property is higher than that of the high pressure method polyethylene resin. Therefore, as the medium-low pressure method polyethylene resin in the present disclosure, at least one of a high-density polyethylene resin and a linear low-density polyethylene resin is preferable, and a high-density polyethylene resin is more preferable.
- the high-density polyethylene resin is a method of polymerizing ethylene at a temperature of 50 to 250 ° C. and 50 to 200 atm using a Cheegler catalyst (titanium-based) in the low-pressure method and a Phillips catalyst (chromium-based) in the medium-pressure method. Manufactured in.
- the density of the high-density polyethylene resin is preferably 0.942 g / cm 3 or more, and more preferably 0.945 to 0.970 g / cm 3 from the viewpoint of air barrier properties.
- the density of the linear low-density polyethylene resin is preferably 0.915 to 0.935 g / cm 3 , and more preferably 0.918 to 0.930 g / cm 3 from the viewpoint of air barrier properties.
- High-density polyethylene resin (HDPE) and low-density polyethylene resin (LDPE) are homopolyethylene polymers, whereas linear low-density polyethylene resin (L-LDPE) is a copolymer of ethylene and ⁇ -olefin. Is. Examples of such ⁇ -olefins include propylene, 1-butene, 1-pentene, 1-hexene, 3-methylpentene-1, 1-octene, 1-decene, 4-methylpentene-1 and the like.
- the content of the structural unit derived from ⁇ -olefin is preferably 4 to 17% by mass, more preferably 5 to 15% by mass in all the structural units constituting the linear low-density polyethylene resin.
- the linear low-density polyethylene resin is produced by copolymerizing ethylene and ⁇ -olefin using a Phillips-type catalyst used in a medium-pressure method, and is a copolymerization component of a conventional high-density polyethylene resin.
- the short-chain branching structure was formed, and the density was appropriately reduced by utilizing this short-chain branching. Therefore, the linear low-density polyethylene resin is a polyethylene resin having a structure that is more linear than the low-density polyethylene resin (LDPE) produced by the conventional high-pressure method and has more branches than the high-density polyethylene resin.
- LDPE low-density polyethylene resin
- a manufacturing process of a gas phase polymerization method using a fluidized bed reactor, a stirring bed reactor, a tubular reactor, etc. is applied. It can be produced based on the method described in No. 154488 (gas phase polymerization method using a fluidized bed reactor).
- the melt mass flow rate (MFR) of the medium / low pressure polyethylene resin B is preferably 0.5 to 50 g / 10 min, more preferably 1 to 30 g / 10 min, at 190 ° C. and a load of 21.2 N, from the viewpoint of moldability. More preferably, it is 1.5 to 25 g / 10 min.
- the moisture permeability of the medium / low pressure method polyethylene resin B is preferably less than 2.0 g / m 2.24 h, more preferably 1.8 g / m less than 2.24 h, still more preferably 1.6 g / m less than 2.24 h. More preferably, it is less than 1.0 g / m 2.24 hours.
- the moisture permeability is the moisture permeability of a sheet-shaped sample having a thickness of 0.5 mm measured by JIZ 0208 (cup method) at 40 ° C.
- the oxygen permeation coefficient of the medium / low pressure method polyethylene resin B is preferably less than 1.0 ⁇ 10 -15 mol ⁇ m / Pa ⁇ s ⁇ m 2 , and more preferably 0.8 ⁇ 10 -15 mol ⁇ m / Pa ⁇ . It is less than s ⁇ m 2 , more preferably less than 0.6 ⁇ 10-15 mol ⁇ m / Pa ⁇ s ⁇ m 2 .
- the oxygen permeability coefficient is a value measured by a method based on JIS K 7126.
- the content of the medium / low pressure method polyethylene resin B is 5 parts by mass or more from the viewpoint of moldability and fusion property with respect to 100 parts by mass of the isobutylene block copolymer A, and is 300 from the viewpoint of flexibility. It is less than the mass part. From these viewpoints, the content of the medium / low pressure method polyethylene resin B is 1 to 100 parts by mass, preferably 2 to 70 parts by mass, more preferably 2 to 70 parts by mass with respect to 100 parts by mass of the isobutylene block copolymer A. It is 3 to 60 parts by mass, more preferably 5 to 30 parts by mass.
- the content of the medium / low pressure polyethylene resin B in the elastomer composition X is preferably 0.5 to 50% by mass, more preferably 1 to 30% by mass, still more preferably 4 to 4 to 50% by mass from the viewpoint of flexibility. It is 25% by mass.
- the elastomer composition X may further contain a softening agent C for rubber from the viewpoint of flexibility and moldability.
- a softening agent C for rubber examples include mineral oils such as paraffin oil, naphthenic oil and aromatic oil, synthetic softeners such as polyolefin oils such as poly ⁇ -olefin and polybutene, and steam barriers. From the viewpoint of properties, polyolefin oil is preferable, and polybutene oil is more preferable.
- the kinematic viscosity of the rubber softener C at 40 ° C. is preferably 3,000 to 20,000 mm 2 / s, more preferably 4,000 to 17,500 mm 2 / s from the viewpoint of long-term heat resistance and air barrier properties. , More preferably 5,000 to 15,000 mm 2 / s.
- the number average molecular weight of the softener C for rubber is preferably 600 to 2000, more preferably 800 to 1500, and further preferably 900 to 1200 from the viewpoint of long-term heat resistance and air barrier properties.
- the content of the softener C for rubber in the elastomer composition X is preferably 50% by mass or less, more preferably 30% by mass or less, from the viewpoint of moldability.
- the elastomer composition X may further contain a block copolymer D having a crystalline ethylene block and an amorphous ethylene / ⁇ -olefin block from the viewpoint of fusion to L-LDPE.
- Examples of the ⁇ -olefin include 1-butene, 1-octene, 1-hexene, 4-methylpentene-1 and the like. Of these, 1-butene is preferable, and as the block copolymer D, a block copolymer (CEBC) having a crystalline ethylene block and an amorphous ethylene / butene block is preferable. In the present disclosure, the block copolymer D may be used alone or in combination of two or more.
- block copolymers D have a linear structure and a radial structure as the bonding state of the blocks.
- examples of commercially available products having a linear structure include Dynaron 6101 and Dynaron 6200P (manufactured by JSR), and examples of commercially available products having a radial structure include Dynaron 6201B (manufactured by JSR).
- any structure can be preferably used, but in the case of the same weight average molecular weight, a radial structure having high melt fluidity is more preferable.
- the A hardness of the block copolymer D is preferably 40 or more from the viewpoint of compatibility between the isobutylene-based block copolymer A and the medium / low density polyethylene resin B, and 95 or less from the viewpoint of the flexibility of the composition. preferable. From these viewpoints, the A hardness of the block copolymer D is preferably 40 to 95, more preferably 50 to 90, and even more preferably 60 to 80.
- the content of the block copolymer D is 1 part by mass or more from the viewpoint of compatibility between the isobutylene-based block copolymer A and the medium / low-density polyethylene resin B with respect to 100 parts by mass of the isobutylene-based block copolymer A. Is preferable, and from the viewpoint of flexibility, 50 parts by mass or less is preferable. From these viewpoints, the content of the block copolymer D is preferably 50 parts by mass or less, more preferably 30 parts by mass or less, still more preferably 20 parts by mass with respect to 100 parts by mass of the isobutylene-based block copolymer A. It is as follows.
- the elastomer composition X may contain an inorganic filler E from the viewpoint of water vapor barrier property.
- Examples of the inorganic filler E include talc, mica, calcium carbonate, clay, titanium oxide, magnesium carbonate, barium sulfate, calcium sulfate, calcium sulfite, calcium phosphate, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, magnesium oxide, and iron oxide. , Zinc oxide, alumina, silica, diatomaceous soil, dolomite, gypsum, calcined clay, asbestos, calcium silicate, bentonite, white carbon, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, cement, zirconia powder, etc. Among these, talc is preferable from the viewpoint of steam barrier property and dispersibility.
- the inorganic filler various shapes such as granular, plate-shaped, rod-shaped, fibrous-shaped, whisker-shaped, etc. are known, but in the present disclosure, the plate-shaped one is used from the viewpoint of water vapor barrier property and air barrier property. preferable.
- the plate shape means a shape in which the ratio of major axis to thickness (major axis / thickness) is 5 or more, preferably 10 to 500.
- the volume-based median diameter of the inorganic filler E is preferably 1.5 ⁇ m or more from the viewpoint of dispersibility, and preferably 50 ⁇ m or less from the viewpoint of water vapor barrier property. From these viewpoints, the volume-based median diameter of the plate-shaped inorganic filler is preferably 1.5 to 50 ⁇ m, more preferably 1.75 to 30 ⁇ m, and further preferably 2.0 to 15 ⁇ m.
- the content of the inorganic filler E is preferably 500 parts by mass or less from the viewpoint of flexibility with respect to 100 parts by mass of the isobutylene block copolymer A. From these viewpoints, the content of the inorganic filler E is preferably 500 parts by mass or less, more preferably 400 parts by mass or less, and further preferably 300 parts by mass or less with respect to 100 parts by mass of the isobutylene block copolymer A. be.
- the elastomer composition X is, if necessary, a reinforcing agent such as carbon black, silica, carbon fiber, glass fiber, etc.; It may contain various additives such as an antistatic agent, a mold release agent, a tackifier, a cross-linking agent, a cross-linking aid, a foaming agent, and a fragrance.
- a reinforcing agent such as carbon black, silica, carbon fiber, glass fiber, etc.
- various additives such as an antistatic agent, a mold release agent, a tackifier, a cross-linking agent, a cross-linking aid, a foaming agent, and a fragrance.
- the elastomer composition X may contain other thermoplastic resins or thermoplastic elastomers as long as the effects of the present disclosure are not impaired.
- the elastomer composition X in the present disclosure includes an isobutylene-based block copolymer A, a medium- and low-pressure polyethylene resin B, and, if necessary, an additive such as a rubber softener C, a block copolymer D, and an inorganic filler E. Is appropriately mixed and solidified.
- the "mixing” referred to in the present disclosure is not particularly limited as long as it is a method in which various raw materials are mixed well, and various raw materials may be dissolved in a soluble organic solvent and mixed, or may be heated, melted and kneaded. May be mixed by. However, it is preferable that the raw materials are mixed under temperature conditions under which the isobutylene block copolymer A and the medium / low pressure polyethylene resin B melt.
- any heat-melting and kneading machine can be used.
- a Banbury mixer, a roll mixer, an extruder and the like can be used, from the viewpoint of uniform mixing and productivity.
- a twin-screw extruder For supply to the extruder, a mixture of various components using a mixing device such as a Henschel mixer in advance may be supplied from one hopper, or each component is charged in two hoppers and quantified with a screw or the like under the hopper. You may serve while doing so.
- the product obtained by mixing the raw materials constituting the elastomer composition X can be in the form of pellets, powders, sheets, etc., depending on the intended use. For example, it is melt-kneaded by an extruder and extruded into a strand, and while being cooled in cold water, it is cut into pellets such as cylinders and rice granules by a cutter.
- the obtained pellets are usually made into a predetermined sheet-shaped molded product or mold-molded product by injection molding or extrusion molding. Further, the melt-kneaded product can be pelletized with a ruder or the like and used as a raw material for molding.
- the A hardness of the elastomer composition X according to the present disclosure is preferably 40 or more and less than 80 from the viewpoint of easy adjustment of the discharge amount of the contents. It is more preferably 50 or more and less than 75, and further preferably 60 or more and less than 70.
- the melt mass flow rate (MFR) of the elastomer composition X according to the present disclosure is 190 ° C. and a load of 21.2 N, preferably 0.1 g / 10 min or more, more preferably 1 from the viewpoint of moldability and meltability. It is 0.0 to 15.0 g / 10 min, more preferably 1.0 to 10.0 g / 10 min, and even more preferably 2.0 to 4.0 g / 10 min or more.
- the moisture permeability of the elastomer composition X according to the present disclosure is preferably less than 2.0 g / m 2.24 h, more preferably less than 1.8 g / m 2.24 h, from the viewpoint of protecting the contents (long-term storage). More preferably, it is less than 1.6 g / m 2.24 hours.
- the moisture permeability is the moisture permeability at 40 ° C. in a sample having a thickness of 0.5 mm measured by JIS Z 0208 (cup method).
- the oxygen permeation coefficient of the elastomer composition X according to the present disclosure is preferably less than 1.0 ⁇ 10-15 mol ⁇ m / Pa ⁇ s ⁇ m 2 and more preferably from the viewpoint of protection (long-term storage) of the contents of the container. Is less than 0.8 ⁇ 10 -15 mol ⁇ m / Pa ⁇ s ⁇ m 2 , more preferably less than 0.6 ⁇ 10 -15 mol ⁇ m / Pa ⁇ s ⁇ m 2 .
- the oxygen permeability coefficient is a value measured by a method based on JIS K 7126.
- the outer container 70 according to the present disclosure is obtained in a state where the elastomer portion 80 is fused to the main body portion 72 by molding the elastomer composition X and the polyolefin-based resin in two colors.
- fusion refers to a phenomenon in which heat above the melting point of the elastomer composition X is applied to form a melt, and then the mixture is solidified at a temperature below the melting point to adhere to the interface to be fused.
- a hot press machine, a heating roll machine, a hot air generator, heated steam, an ultrasonic welder, a high frequency welder, a laser, or the like can be used. Therefore, even if the interface of the fused portion has a complicated three-dimensional shape, it can be well adapted to the complicated three-dimensional shape and integrated by molding.
- the elastomer composition X can be integrated with the polyolefin-based resin to form a composite molded product. This makes it possible to combine members having complicated joint surfaces and members having joint surfaces having different shapes from each other.
- This composite molded body is molded by methods such as injection molding, injection compression molding, insert molding, multicolor molding, vacuum molding, pneumatic molding, blow molding, hot press molding, foam molding, laser fusion molding, and extrusion molding. Can be obtained.
- Component A Isobutylene-based block copolymer, etc.>
- Composition of block copolymer Proton NMR measurement is performed by a nuclear magnetic resonance apparatus (DPX-400 manufactured by BRUKER, Germany), and the content of styrene and / or styrene derivative, that is, an aromatic vinyl-based polymer, is determined by quantifying the characteristic group of styrene. Determine the block content. The content of other monomer units can also be determined by proton NMR measurement.
- Weight average molecular weight (Mw) Under the following measurement conditions, the molecular weight is measured in terms of polystyrene by a gel permeation chromatograph, and the weight average molecular weight is obtained.
- Measuring device / pump JASCO (JASCO Corporation), PU-980 ⁇
- Column oven Showa Denko KK, AO-50 -Detector: Hitachi, RI (differential refractometer) detector L-3300 -Column type: Showa Denko Corporation "K-805L (8.0 x 300 mm)" and "K-804L (8.0 x 300 mm)" are used in series.
- -Column temperature 40 ° C.
- a hardness (value 15 seconds after the start of the test) according to JIS K6253 is measured for a stack of three 2 mm-thick plate-shaped injection-molded samples (6 mm in total). The measurement is carried out after adjusting the condition of the injection-molded sample in a room at a temperature of 23 ° C. and a humidity of 50% for one day.
- MFR Melt Mass Flow Rate
- the number average molecular weight is obtained in terms of polystyrene by the same method as for component A.
- ⁇ Component D Block copolymer having a crystalline ethylene block and an amorphous ethylene / ⁇ -olefin block> [A hardness]
- a hardness (value 15 seconds after the start of the test) according to JIS K6253 is measured for a stack of three 2 mm-thick plate-shaped injection-molded samples (6 mm in total). The measurement is carried out after adjusting the condition of the injection-molded sample in a room at a temperature of 23 ° C. and a humidity of 50% for one day.
- ⁇ Component E Inorganic filler> [Volume-based median diameter]
- 0.1 g of the sample was dispersed in 10 mL of deionized water, and the slurry was dispersed with 70 w ultrasonic waves for 30 seconds using "Master Sizar 2000" manufactured by Malvern. The particle size distribution is measured, and the 50% value in the volume-based integrated fraction is defined as the volume-based median diameter.
- Elastomer Composition (Pellet) A raw material other than the softener (component C) was dry-blended and then impregnated with the softener to prepare a mixture. Then, the mixture was melt-kneaded with an extruder under the following conditions, extruded into strands, and cut into a diameter of about 3 mm and a thickness of about 3 mm by a cutter while being cooled in cold water to produce pellets of an elastomer composition. ..
- Injection molding conditions Injection molding machine: 100MSIII-10E (trade name, manufactured by Mitsubishi Heavy Industries, Ltd.) Injection molding temperature: 200 ° C Injection pressure: 30% Injection time: 3 sec Mold temperature: 40 ° C
- a resin plate produced in a mold having a thickness of 4 mm, a width of 25 mm, and a length of 125 mm is inserted, and the elastomer compositions of Examples 1 to 7 and Comparative Examples 1 to 5 are injection-molded to form a strip-shaped composite molded body.
- Injection molding conditions Injection molding machine: Mitsubishi Heavy Industries, Ltd., 100MSIII-10E Injection molding temperature: 240 ° C Injection pressure: 98MPa, injection speed: 50%, holding pressure: 20%, holding time: 10 sec Injection time: 2 sec Mold temperature: 40 ° C
- the elastomer compositions of Examples 1 to 7 and Comparative Examples 1 to 5 and the composite molded product using the elastomer compositions were evaluated as follows.
- the compositions and evaluation results of the elastomer compositions of Examples 1 to 7 and Comparative Examples 1 to 5 are shown in Tables 4 and 5.
- a hardness of elastomer composition A hardness (value 15 seconds after the start of the test) according to JIS K6253 is measured for a stack of three 2 mm-thick plate-shaped injection-molded samples (6 mm in total). The measurement is carried out after adjusting the condition of the injection-molded sample in a room at a temperature of 23 ° C. and a humidity of 50% for one day.
- Comparative Example 3 in which the elastomer composition contained a low-density polyethylene resin which is a high-pressure polyethylene resin as the polyethylene resin and Comparative Example 4 in which the polypropylene resin was contained instead of the polyethylene resin had insufficient fusion property to HDPE. be.
- Comparative Example 5 containing SEBS instead of isobutylene-based block copolymer has a moisture permeability exceeding 2.0 g / m 2.24 hr, and has a water vapor barrier property as compared with Examples 1 to 7. Inferior.
- Reference Example 1 is the result of measuring the physical characteristics of the component A "SIBSTAR 062T" in the same manner as the elastomer compositions of Examples and Comparative Examples.
- the isobutylene-based block copolymer itself is almost melted in HDPE. Although it does not adhere, it can be seen that the fusion property to HDPE appears by mixing it with a predetermined amount of medium / low pressure polyethylene resin.
- the container 10 of the embodiment has a configuration in which the opening 74 formed in the outer peripheral wall of the outer container 70 is covered with the pressing portion 84 made of an elastomer. Therefore, as shown in FIGS. 4 and 7, when the cap 40 is removed from the outer container 70, the container 10 presses the pressing portion 84 with a finger or the like to press the main body portion 22 of the inner container 20. By doing so, the contents of the inner container 20 can be easily discharged from the nozzle portion 24.
- the container 10 of the embodiment has a configuration in which the cap 40 is detachably provided on the outer container 70.
- the cap 40 is attached to the outer container 70 and covers the nozzle portion 24 of the inner container 20 protruding from the outer container 70.
- the air barrier property of the container 10 can be improved as compared with the configuration in which the cap 40 is detachably provided on the inner container 20.
- the container 10 of the embodiment has a configuration in which the outer container 70 made of hard resin contains the inner container 20. Therefore, in the container 10 of the embodiment, even if the container 10 is carelessly pushed, the contents are suppressed from being ejected from the nozzle portion 24 of the inner container 20.
- the container 10 of the embodiment has a configuration in which the pedestal 50 is provided at the end of the outer container 70 on the opposite side of the cap 40. Therefore, in the container 10 of the embodiment, the container 10 can be erected on a workbench or the like with the pedestal 50 facing down and the tip portion 24a of the nozzle portion 24 facing upward. As a result, when the user of the container 10 interrupts the work of discharging the contents filled in the inner container 20, the user stands the container 10 on a workbench or the like so that the contents do not leak from the nozzle portion 24. Can be done.
- the container 10 of the embodiment has a configuration in which a pair of openings 74 are provided axially symmetrically with respect to the central axis of the outer container 70. Therefore, in the container 10 of the embodiment, when the pair of pressing portions 84 are pressed and the contents are discharged from the nozzle portion 24, the pair of pressing portions 84 are easily pressed by being pinched by the thumb and the index finger (see FIG. 10). ..
- the container 10 of the embodiment has a connecting portion 86 for integrally connecting the pair of pressing portions 84 so as to be wound around the outer peripheral wall of the outer container 70. Therefore, in the container 10 of the embodiment, the peeling of the pressing portion 84 from the outer container 70 is suppressed as compared with the configuration in which the pair of pressing portions 84 are not integrally connected.
- the container 10 of the embodiment has a first extension portion 86a extending from the connecting portion 86 toward the pedestal 50. Therefore, the container 10 of the embodiment has a larger fusion area of the elastomer portion 80 with respect to the outer container 70 as compared with the configuration having no first extension portion 86a, so that the pressing portion 84 can be peeled off from the outer container 70. Is suppressed.
- the container 10 of the embodiment has a configuration in which a plurality of ribs 42c are formed on the outer peripheral wall of the outer cylinder portion 42 of the cap 40. Therefore, in the container 10 of the embodiment, when the user manually attaches / detaches the cap 40, the finger is caught by the rib, so that the cap can be easily grasped.
- the container 10 of the embodiment has a configuration in which the outer peripheral wall of the outer container 70 expands in diameter from the end on the cap 40 side toward the pedestal 50. Therefore, the container 10 of the embodiment is less likely to fall when it is placed on a workbench or the like with the tip portion 24a of the nozzle portion 24 facing upward.
- the container 10 of the embodiment has a structure in which the content of the inner container 20 is an adhesive. Therefore, since the container 10 of the embodiment has an air barrier property, the adhesive filled in the inner container 20 is less likely to deteriorate when not in use.
- the container 10 of the embodiment has a configuration in which the inner container 20 is made of polyolefin. Therefore, in the container 10 of the embodiment, the adhesive remaining inside the nozzle portion 24 is difficult to cure.
- the container 10 of the embodiment has a configuration in which the cap 40 is made of polyolefin. Therefore, in the container 10 of the embodiment, the adhesive remaining on the tip portion 24a of the nozzle portion 24 covered with the cap 40 is difficult to cure.
- the container 10 of the embodiment has a configuration in which the desiccant 60 is provided inside the pedestal 50. Therefore, the container 10 of the embodiment can dry the space by absorbing the moisture contained in the air in the internal space of the container 10.
- the container 10 of the embodiment has a structure in which a recess 84b is formed on the surface of the pressing portion 84. Therefore, in the container 10 of the embodiment, the thumb and the index finger can be fitted to the recess 84b when the pressing portion 84 is pressed (see FIG. 10).
- the pressing portion 84 has a raised portion 84a. Therefore, in the container 10 of the embodiment, the user can fumble to determine the position of the pressing portion 84.
- the container 10 of the embodiment has a configuration in which the maximum thickness T max of the raised portion 84a is 0.2 mm or more and is within the range of 1.0 mm or less. Therefore, in the container 10 of the embodiment, the position of the pressing portion 84 can be easily determined by the user as compared with the configuration in which the maximum thickness T max of the raised portion 84a is less than 0.2 mm. Further, in the container 10 of the embodiment, the inner container 20 is more likely to be pressed by pressing the pressing portion 84 with the thumb and the index finger, as compared with the configuration in which the maximum thickness T max of the raised portion 84a exceeds 1.0 mm.
- the container 10 of the embodiment has a structure in which the A hardness of the elastomer composition X is 40 or more and less than 80. Therefore, in the container 10 of the embodiment, it is easier to adjust the discharge amount of the contents due to the pressing of the pressing portion 84, as compared with the configuration in which the A hardness of the elastomer forming the pressing portion 84 is less than 40. Further, in the container 10 of the embodiment, it is easier to adjust the discharge amount of the contents by pressing the pressing portion 84, as compared with the configuration in which the A hardness of the elastomer forming the pressing portion 84 is 80 or more.
- the container 10 of the embodiment has a configuration in which the moisture permeability of the elastomer composition X in a sample having a thickness of 0.5 mm, which is measured in accordance with JIS Z 0208, is less than 2.0 g / m 2.24 hr.
- the moisture permeability of the elastomer forming the pressing portion 84 is 2.0 g / m 2.24 hr or more in a sample having a thickness of 0.5 mm, as compared with the configuration of the container 10.
- the water vapor barrier property is improved.
- the container 10 of the embodiment has a configuration in which the oxygen permeability coefficient measured according to JIS K 7126 is less than 1.0 ⁇ 10-15 mol ⁇ m / Pa ⁇ s ⁇ m 2 . Therefore, in the container 10 of the embodiment, the oxygen permeability coefficient of the elastomer forming the pressing portion 84 is 1.0 ⁇ 10 -15 mol ⁇ m / Pa ⁇ s ⁇ m 2 or more, as compared with the structure of the container 10. Improves air barrier properties.
- the container 10 of the embodiment is provided with a pedestal 50.
- the container 10 according to the present disclosure may be configured not to have a pedestal 50 as long as it has an air barrier property to the inner container 20 only with the outer container 70 and the cap 40.
- a pair of openings 74 are provided axially symmetrically with respect to the central axis of the outer container 70.
- the openings 74 according to the present disclosure are not limited to those provided in a pair axially symmetrical with respect to the central axis of the outer container 70.
- the opening 74 in the present disclosure may be provided with only one opening on the outer peripheral wall of the outer container 70, or may be provided with three or more openings 74.
- the plurality of openings 74 provided in the outer container 70 in the present disclosure may not be axially symmetric with respect to the central axis of the outer container 70.
- the container 10 of the embodiment has a structure in which a pair of pressing portions 84 are integrally connected by a connecting portion 86.
- the pair of pressing portions 84 according to the present disclosure may be configured not to be integrally connected.
- the container 10 of the embodiment is assumed to have the first extension portion 86a.
- the container 10 according to the present disclosure may have a configuration that does not have the first extension portion 86a.
- the container 10 according to the present disclosure may have a configuration in which the first elastomer portion 82 and the second elastomer portion 90 are not connected.
- the container 10 according to the present disclosure may have a configuration that does not have the second elastomer portion 90.
- the cap 40 of the embodiment has a rib 42c formed therein.
- the cap 40 according to the present disclosure may not have ribs 42c formed therein.
- the outer container 70, the cap 40, and the pedestal 50 according to the embodiment have a configuration in which the diameter increases from the end on the cap 40 side toward the pedestal 50.
- the outer container 70, the cap 40, and the pedestal 50 according to the present disclosure may not have a structure in which the diameter is expanded or reduced, and the outer diameter of each outer peripheral wall is one. It may have a similar configuration.
- the outer container 70, the cap 40, and the pedestal 50 according to the present disclosure may have different outer peripheral walls and may not be flush with each other.
- the concave portion 84b of the pressing portion 84 has an elliptical shape when viewed from the radial direction.
- the recess 84b in the present disclosure is not limited to the elliptical one.
- the recess 84b according to the present disclosure may be circular or dripping when viewed from the radial direction.
- the recess 84b in the present disclosure may have a polygonal shape such as a triangle or a quadrangle when viewed from the radial direction.
- the raised portion 84a of the pressing portion 84 is formed with a concave portion 84b which is concave with respect to the raised portion 84a.
- the raised portion 84a according to the present disclosure may be formed with a convex portion that is convex with respect to the raised portion 84a.
- the pressing portion 84 according to the present disclosure may not have the concave portion 84b or the convex portion formed therein.
- the pressing portion 84 has a raised portion 84a.
- the pressing portion 84 does not have to have the raised portion 84a.
- the elastomer portion 80 is assumed to be substantially flush with the outer peripheral wall of the main body portion 72 of the outer container 70.
- the elastomer portion 80 according to the present disclosure may have a step with respect to the outer peripheral wall of the main body portion 72 of the outer container 70.
- the main body 72 of the outer container 70 is assumed to have a substantially cylindrical shape.
- the outer container 70 according to the present disclosure is not limited to a substantially cylindrical one as long as it is a tubular one, and may be a substantially rectangular shape and a tubular one when viewed from the radial direction.
- the container 10 of the embodiment is provided with the desiccant 60.
- the container 10 according to the present disclosure does not have to include the desiccant 60.
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Abstract
Description
また、特表2019-508236号公報に記載される装置は、板ばねの自由端部を押さないと板ばねが撓まず、容器に圧力を加えることができない。
本開示は、上記現状を鑑みて成されたものであり、エアバリヤ性が向上し、且つ外容器に内包されている内容器の内容物を容易に吐出できる容器を提供する。
本実施形態に係る容器10は、図8に示されるように、内容物が充填されている内容器20と、内容器20を内包して保護する外容器70と、を備えている。外容器70には、キャップ40と、台座50と、が取付けられている。また、台座50の中には、乾燥剤60が収容されている。
内容器20は、本体部22と、ノズル部24と、を備える。本体部22は、図3、図4及び図8に示されるように、一方向に延びる有底円筒状の部材である。本体部22は、可撓性を有している。本体部22は、底22aと、底22aとは反対側の端部に形成されている開口22bと、を有する。また、本体部22における開口22b側の端部の外周壁には、雄ねじ部22cが形成されている。
ノズル部24は、本体部22の開口22b側の端部に設けられ、一方向に延びており両端部が長手方向に向けて開口している略円筒状の部材である。ノズル部24は、本体部22の開口22bとは反対側の先端部24aがテーパ状に縮径している。ノズル部24は、本体部22の開口22b側端部に、他のノズル部24の周壁よりも拡径している周壁である拡径部24bを有する。また、ノズル部24において拡径部24bの内周壁には、本体部22の雄ねじ部22cに対応している雌ねじ部24cが形成されている。ノズル部24は、雌ねじ部24cが雄ねじ部22cに螺結されることで、本体部22と接続されている。
外容器70は、図9に示されるように、内容器20をノズル部24の先端が突出している状態で内包している部材である。外容器70は、本体部72と、エラストマー部80と、を備える。
本体部72は、一方向に延びており両端部が長手方向に向けて開口している略円筒状の部材である。本体部72は、内容器20のノズル部24側の端部からノズル部24とは反対側の端部に向けて、外周壁が略テーパ状に拡径している。図8に示されるように、本体部72の内側には、内容器20のノズル部24の先端が突出する側とは反対側の開口から、内容器20が挿入されている。また、本体部72は、図3及び図4に示されるように、本体部72に挿入された内容器20のノズル部24の先端が突出するように、内容器20の拡径部24bの外径部と嵌合可能な構造を有する。
キャップ40は、図1~3、図6、図8に示されるように、内容器20のノズル部24が突出する側である外容器70の端部に着脱可能に設けられている。また、キャップ40は、外容器70から突出した内容器20のノズル部24を覆う、筒状の部材である。キャップ40は、外筒部42と、内筒部44と、を有する。
台座50は、図1~3、図6、図8に示されるように、外容器70の嵌合部72bに着脱可能に設けられた筒状の部材である。台座50は、外筒部52と、内筒部54と、連結部56と、を有する。
乾燥剤60は、台座50の内筒部54の内側に収容される、円柱状の部材である。乾燥剤60は、外容器70と、キャップ40と、台座50と、に包囲された空間内の空気に含まれる水分を吸収する。すなわち、乾燥剤60は、容器10の内部空間の空気に含まれる水分を吸収する。
エラストマー部80は、図1~図4、図8、図9に示されるように、本体部72の外周壁に設けられ、被覆部76を被覆しているエラストマー製の部材である。エラストマー部80は、第1被覆部77を被覆している第1エラストマー部82と、第2被覆部78を被覆している第2エラストマー部90と、を有する。
第1エラストマー部82は、本体部72の第1被覆部77を被覆するように設けられ、本体部72の外周壁に周方向に巻かれるように形成されている。第1エラストマー部82は、押圧部84と、連結部86と、を有する。第1エラストマー部82は、押圧部84以外の部位が、本体部72の外周壁と略面一となるように形成されている。
押圧部84は、第1エラストマー部82において、本体部72の開口部74を覆っている部位である。押圧部84は、一対の開口部74に対応して一対形成されている。押圧部84は、盛り上がり部84aと、凹部84bと、を有する。
連結部86は、第1エラストマー部82において、一対の押圧部84を本体部72の外周壁の第1被覆部77に周方向に巻かれるように一体に連結している部位である。連結部86は、第1被覆部77に沿って形成されている。連結部86は、第1被覆部77の第1延長溝77bに形成された第1延長部86aを有する。第1延長部86aは、嵌合部72bに向けて第1延長溝77bに沿って延びており、第2エラストマー部90と繋がっている。すなわち、連結部86の第1延長部86aは、嵌合部72bと嵌合する台座50に向けて延びている。第1延長部86aは、延長部の一例である。
第2エラストマー部90は、嵌合部72bの第2被覆部78を被覆するように設けられ、嵌合部72bの外周壁の第2被覆部78に周方向に巻かれるように形成されている。第2エラストマー部90は、嵌合部72bの第2延長溝78bに形成されており、第2エラストマー部90を第1エラストマー部82の第1延長部86aと一体に連結している第2延長部92を有する。第2エラストマー部90は、嵌合部72bの外周壁と略面一となるように形成されている。
エラストマー部80を形成するエラストマーは、柔軟性(A硬度)、エアバリヤ性(透湿度、酸素透過係数)、成形性、融着性を兼ね備えていることが好ましい。具体的には、該エラストマーは、イソブチレン系重合体ブロック及び芳香族ビニル系重合体ブロックから構成されるイソブチレン系ブロック共重合体Aと中・低圧法ポリエチレン樹脂Bを含有するエラストマー組成物Xであることが好ましい。本実施形態におけるエラストマー部80は、上記エラストマー組成物Xで形成されている。
ポリエチレン樹脂は、製造方法の違いにより、中・低圧法ポリエチレン樹脂と高圧法ポリエチレン樹脂とに大別できるが、中・低圧法により直鎖状の高密度ポリエチレン樹脂(HDPE)が、高圧法により長鎖分岐のある低密度ポリエチレン樹脂(LDPE)が得られる。高密度ポリエチレン樹脂はエアバリヤ性が高く、低密度ポリエチレン樹脂はエアバリヤ性が低い。そしてさらに、近年では、中圧法により製造した第三のポリエチレン樹脂として、直鎖状低密度ポリエチレン樹脂(L-LDPE)も知られており、エアバリヤ性は、高圧法ポリエチレン樹脂よりは高い。従って、本開示における中・低圧法ポリエチレン樹脂としては、高密度ポリエチレン樹脂及び直鎖状低密度ポリエチレン樹脂の少なくともいずれかが好ましく、高密度ポリエチレン樹脂がより好ましい。
従って、直鎖状低密度ポリエチレン樹脂は、従来の高圧法により製造された低密度ポリエチレン樹脂(LDPE)より直鎖性があり、かつ、高密度ポリエチレン樹脂より枝分かれが多い構造のポリエチレン樹脂である。直鎖状低密度ポリエチレン樹脂は、流動床反応器、撹拌床反応器、管型反応器等を用いる気相重合法の製造プロセスを適用し、例えば、特開昭54-148093号、同54-154488号等に記載されている方法(流動床反応器を使用した気相重合法)に基づいて製造することができる。
以下に、本開示に係るエラストマー組成物Xとポリオレフィン系樹脂と、で構成される複合成形体の実施例を具体的に説明する。実施例及び比較例で使用した原料の各種物性は、以下の方法により測定した。
〔ブロック共重合体の組成〕
核磁気共鳴装置(ドイツ国BRUKER社製、DPX-400)によって、プロトンNMR測定を行い、スチレンの特性基の定量を行うことによってスチレン及び/又はスチレン誘導体の含有量、即ち芳香族ビニル系重合体ブロックの含有量を決定する。他の単量体単位の含有量もプロトンNMR測定により求めることができる。
以下の測定条件で、ゲルパーミエーションクロマトグラフにより、ポリスチレン換算で分子量を測定し、重量平均分子量を求める。
・ポンプ:JASCO(日本分光(株))製、PU-980
・カラムオーブン:昭和電工(株)製、AO-50
・検出器:日立製、RI(示差屈折計)検出器 L-3300
・カラム種類:昭和電工(株)製「K-805L(8.0×300mm)」及び「K-804L(8.0×300mm)」各1本を直列使用
・カラム温度:40℃
・ガードカラム:K-G(4.6×10mm)
・溶離液:クロロホルム
・溶離液流量:1.0ml/min
・試料濃度:約1mg/ml
・試料溶液ろ過:ポリテトラフルオロエチレン製0.45μm孔径ディスポーザブルフィルタ
・検量線用標準試料:昭和電工(株)製ポリスチレン
厚さ2mmのプレート状の射出成形体試料を3枚重ね(合計6mm)としたものについて、JIS K6253に準拠したA硬度(試験開始から15秒後の値)を測定する。測定は上記射出成形体試料を温度23℃、湿度50%の室内で1日状態調節の後、実施する。
アルファミラージュ社製の精密電子比重計「SD-200L」を用いて、23℃の条件下で大気中と水中とで質量を測定し、密度を算出する。
〔密度〕
アルファミラージュ社製の精密電子比重計「SD-200L」を用いて、23℃の条件下で大気中とエタノール中とで質量を測定し、密度を算出する。
ASTM D1238に準拠して、190℃、荷重21.2Nの条件で測定する。
JIS Z 0208(カップ法)に準拠し、安田精機製作所製の透湿カップ(直径70mm)を用いて、条件:40℃×90%RH、シート厚さ:0.5mmで測定する。
JIS K 7126に準拠した方法により、東洋精機製作所製のガス透過率測定装置「BR-3」を用いて23℃で測定する。試験片には、90mm×90mm×0.5mmt、透過面積38.5cm2のものを使用する。
〔動粘度〕
JIS Z 8803に従って、40℃の温度で測定する。
成分Aと同様の方法により、ポリスチレン換算で数平均分子量を求める。
〔A硬度〕
厚さ2mmのプレート状の射出成形体試料を3枚重ね(合計6mm)としたものについて、JIS K6253に準拠したA硬度(試験開始から15秒後の値)を測定する。測定は上記射出成形体試料を温度23℃、湿度50%の室内で1日状態調節の後、実施する。
アルファミラージュ社製の精密電子比重計「SD-200L」を用いて、23℃の温度条件下で大気中とエタノール中とで質量を測定し、密度を算出する。
〔体積基準メジアン径〕
JIS M8511に定めるレーザー回折・散乱法に準じて、試料0.1gを10mLの脱イオン水に分散させ、70wの超音波で30秒間分散させたスラリーを、マルバーン社製「マスターサイザー2000」によりで粒度分布を測定し、体積基準の積算分率における50%値を体積基準メジアン径とする。
軟化剤(成分C)以外の原料をドライブレンドした後、これに軟化剤を含浸させて混合物を作製した。その後、混合物を下記の条件で、押出機で溶融混練して、ストランドに押出し、冷水中で冷却しつつカッターによって、直径3mm程度、厚さ3mm程度に切断し、エラストマー組成物のペレットを製造した。
押出機:KZW32TW-60MG-NH(商品名、(株)テクノベル製)
シリンダー温度:180~220℃
スクリュー回転数:300r/min
実施例1~7及び比較例1~5のエラストマー組成物のペレットを、下記の条件で射出成形し、厚さ2mm×幅125mm×長さ125mmのプレートを作製した。
射出成形機:100MSIII-10E(商品名、三菱重工業(株)製)
射出成形温度:200℃
射出圧力:30%
射出時間:3sec
金型温度:40℃
ポリオレフィン系樹脂として、HDPE(東ソー社製のニポロンハード4020)、及びL-LDPE(プライムポリマー社製のエボリューSP2520)のペレットを、それぞれ下記の条件で射出成形し、厚さ2mm×幅125mm×長さ125mmの樹脂プレートを作製し、切断機でカットして、厚さ2mm×幅25mm×長さ125mmの融着試験基材を得た。
ゲート:フィルムゲート
シリンダー温度:200℃
計量値:55mm
保圧切替位置:3.8mm
射出成形機:三菱重工業(株)製、100MSIII-10E
射出成形温度:240℃
射出圧力:98MPa、射出速度:50%、保持圧:20%、保持時間:10sec
射出時間:2sec
金型温度:40℃
厚さ2mmのプレート状の射出成形体試料を3枚重ね(合計6mm)としたものについて、JIS K6253に準拠したA硬度(試験開始から15秒後の値)を測定する。測定は上記射出成形体試料を温度23℃、湿度50%の室内で1日状態調節の後、実施する。
ASTM D1238に準拠し、190℃、荷重21.2Nの条件で測定した。
エラストマー組成物を厚さ0.5mm×幅100mm×長さ120mmのプレス用型枠に入れ、200℃に加熱された熱プレス機(東邦マシーナリー社、油圧成形機TB-50-2型)を用いて2分間熱プレス、次いで3分間冷却プレスを行って、厚さ0.5mmのシート状のプレス成形体を試験片として作製した。
JIS Z 0208(カップ法)に準拠し、安田精機製作所製の透湿カップ(直径70mm)を用いて、条件:40℃×90%RH、シート厚さ:0.5mmで測定した。
エラストマー組成物を厚さ0.5mm×幅100mm×長さ120mmのプレス用型枠に入れ、200℃に加熱された熱プレス機(東邦マシーナリー社、油圧成形機TB-50-2型)を用いて2分間熱プレス、次いで3分間冷却プレスを行って、厚さ0.5mmのシート状のプレス成形体を試験片として作製した。試験片寸法は90mmかける90mmかける0.5mmt、透過面積38.5cm2のものを使用した。
JIS K 7126に準拠した方法により、東洋精機製作所製のガス透過率測定装置「BR-3」を用いて23℃で測定した。
複合成形体を用い、雰囲気温度23℃でエラストマー組成物の層(表皮材層)とポリオレフィン系樹脂の層(基材層)とを180°方向に50mm/minで引張試験を行い、表皮材層と基材層の剥離強度(単位:N/25mm)を測定した。剥離強度は、120N/25mm以上が好ましい。
これに対し、エラストマー組成物がポリエチレン樹脂を含有していない比較例1及び比較例2は、透湿度が2.0g/m2・24hrを超えており、実施例1~7と比して水蒸気バリヤ性に劣っている。エラストマー組成物が、ポリエチレン樹脂として高圧ポリエチレン樹脂である低密度ポリエチレン樹脂を含有した比較例3と、ポリエチレン樹脂の代わりにポリプロピレン樹脂を含有した比較例4とは、HDPEに対する融着性が不十分である。また、イソブチレン系ブロック共重合体の代わりに、SEBSを含有した比較例5は、透湿度が2.0g/m2・24hrを超えており、実施例1~7と比して水蒸気バリヤ性に劣っている。
なお、参考例1は、成分Aの「SIBSTAR 062T」の物性を実施例及び比較例のエラストマー組成物と同様にして測定した結果であり、イソブチレン系ブロック共重合体そのものでは、HDPEにはほとんど融着しないが、所定量の中・低圧法ポリエチレン樹脂と混合することでHDPEへの融着性が現れることが分かる。
次に、実施形態の作用及び効果について説明する。なお、この説明において、実施形態に対する比較形態を記載するときに、実施形態の容器10と同様の部品等を用いる場合、その部品等の符号及び名称をそのまま用いて説明する。
Claims (17)
- 充填された内容物を吐出するノズル部を備える内容器と、
前記内容器を内包すると共に外周壁に開口部が形成された硬質樹脂製の筒状の外容器と、
前記外周壁に設けられ、前記開口部を覆うエラストマー製の押圧部と、
前記外容器から突出した前記ノズル部を覆い、前記外容器に着脱可能とされたキャップと、
を備える容器。 - 前記キャップとは反対側の前記外容器の端部に台座をさらに備える、請求項1に記載の容器。
- 前記押圧部で覆われる前記開口部は、前記外容器の中心軸に対して軸対称に一対設けられている、請求項1又は請求項2に記載の容器。
- 一対の前記押圧部は、前記外容器の外周壁に巻かれるように一体に連結している前記エラストマー製の連結部をさらに有する請求項3に記載の容器。
- 前記連結部から前記外容器の前記台座に向けて延びる前記エラストマー製の延長部をさらに有する請求項4に記載の容器。
- 前記キャップの外周部には複数のリブが形成されている請求項1~5の何れか1項に記載の容器。
- 前記外容器の前記外周壁は、前記キャップ側の端部から前記台座へ行くに従い拡径している、請求項1~6の何れか1項に記載の容器。
- 前記内容物は、接着剤である、請求項1~7の何れか1項に記載の容器。
- 前記内容器は、ポリオレフィン製である、請求項8に記載の容器。
- 前記キャップは、ポリオレフィン製である、請求項9に記載の容器。
- 前記台座の内側に乾燥剤を備える、請求項2~10の何れか1項に記載の容器。
- 前記押圧部の表面には、凹部が形成されている、請求項1~11の何れか1項に記載の容器。
- 前記押圧部は、前記外容器の外周壁より盛り上がっている盛り上がり部を有する、請求項1~12の何れか1項に記載の容器。
- 前記盛り上がり部の最大厚みは、0.2mm以上であって1.0mm以下の範囲内である、請求項13に記載の容器。
- 前記エラストマーは、A硬度が40以上であって80未満の範囲内である、請求項1~14の何れか1項に記載の容器。
- 前記エラストマーは、JIS Z 0208に準拠して測定される厚さ0.5mmの試料での透湿度が2.0g/m2・24hr未満である、請求項1~15の何れか1項に記載の容器。
- 前記エラストマーは、JIS K 7126に準拠して測定される酸素透過係数が1.0×10-15mol・m/Pa・s・m2未満である、請求項1~16の何れか1項に記載の容器。
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WO2022107825A1 true WO2022107825A1 (ja) | 2022-05-27 |
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PCT/JP2021/042279 WO2022107825A1 (ja) | 2020-11-20 | 2021-11-17 | 容器 |
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US (1) | US20240002124A1 (ja) |
JP (1) | JPWO2022107825A1 (ja) |
CN (1) | CN116490289A (ja) |
CA (1) | CA3199540A1 (ja) |
TW (1) | TW202224787A (ja) |
WO (1) | WO2022107825A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0646863Y2 (ja) * | 1987-08-26 | 1994-11-30 | 積水アイコー株式会社 | 接着剤滴出包装容器 |
JPH0848358A (ja) * | 1994-08-03 | 1996-02-20 | Pentel Kk | 水分を嫌う液体容器 |
JPH10337523A (ja) * | 1997-06-06 | 1998-12-22 | Toagosei Co Ltd | ペンタイプの瞬間接着剤容器 |
JP2002308331A (ja) * | 2001-04-16 | 2002-10-23 | Koatsu Kako Kk | リフィル式二重容器 |
JP2004182249A (ja) * | 2002-11-29 | 2004-07-02 | Taoka Chem Co Ltd | 接着剤用複合容器 |
JP2007276879A (ja) * | 2006-03-17 | 2007-10-25 | Taoka Chem Co Ltd | 接着剤用複合容器 |
JP2008230692A (ja) * | 2007-03-23 | 2008-10-02 | Toagosei Co Ltd | 金属チューブ製容器用被覆体及び複合容器 |
WO2014068799A1 (ja) * | 2012-11-02 | 2014-05-08 | コクヨS&T株式会社 | 塗布製品 |
-
2021
- 2021-11-17 CN CN202180078187.5A patent/CN116490289A/zh active Pending
- 2021-11-17 US US18/253,505 patent/US20240002124A1/en active Pending
- 2021-11-17 JP JP2022563809A patent/JPWO2022107825A1/ja active Pending
- 2021-11-17 WO PCT/JP2021/042279 patent/WO2022107825A1/ja active Application Filing
- 2021-11-17 CA CA3199540A patent/CA3199540A1/en active Pending
- 2021-11-19 TW TW110143108A patent/TW202224787A/zh unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0646863Y2 (ja) * | 1987-08-26 | 1994-11-30 | 積水アイコー株式会社 | 接着剤滴出包装容器 |
JPH0848358A (ja) * | 1994-08-03 | 1996-02-20 | Pentel Kk | 水分を嫌う液体容器 |
JPH10337523A (ja) * | 1997-06-06 | 1998-12-22 | Toagosei Co Ltd | ペンタイプの瞬間接着剤容器 |
JP2002308331A (ja) * | 2001-04-16 | 2002-10-23 | Koatsu Kako Kk | リフィル式二重容器 |
JP2004182249A (ja) * | 2002-11-29 | 2004-07-02 | Taoka Chem Co Ltd | 接着剤用複合容器 |
JP2007276879A (ja) * | 2006-03-17 | 2007-10-25 | Taoka Chem Co Ltd | 接着剤用複合容器 |
JP2008230692A (ja) * | 2007-03-23 | 2008-10-02 | Toagosei Co Ltd | 金属チューブ製容器用被覆体及び複合容器 |
WO2014068799A1 (ja) * | 2012-11-02 | 2014-05-08 | コクヨS&T株式会社 | 塗布製品 |
Also Published As
Publication number | Publication date |
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CN116490289A (zh) | 2023-07-25 |
CA3199540A1 (en) | 2022-05-27 |
US20240002124A1 (en) | 2024-01-04 |
JPWO2022107825A1 (ja) | 2022-05-27 |
TW202224787A (zh) | 2022-07-01 |
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