container

Abstract

The present invention provides a container comprising: an inner container having a nozzle portion for spraying out a filled adhesive; a cylindrical outer container made of hard resin containing the inner container and having an opening formed on its outer peripheral wall; a pressing portion of an elastic type provided on the outer peripheral wall of the outer container and covering the opening; and a cover covering the nozzle portion protruding from the outer container and being removable from the outer container.

Description

Technical Field

[0001] This disclosure relates to a container. Background Technology

[0002] Japanese Patent Application Publication No. 2019-508236 discloses an apparatus for applying an adhesive and / or sealant. The apparatus includes a housing for housing a container. The housing includes: a housing space for housing the container; a sealable coating front end connected to the housing space for discharging the adhesive and / or sealant; a stabilizing outer shell for the housing space; and at least one region of the housing designed as a deformable pressure zone, capable of applying pressure from the outside to the container that can be disposed in the housing space. Existing technical documents Patent documents

[0003] Patent Document 1: Japanese Patent Publication No. 2019-508236. Summary of the Invention

[0004] However, in the device described in Japanese Patent Application Publication No. 2019-508236, the deformable pressure region that applies pressure to the container is a leaf spring formed by creating slits in the shell. This indicates that the airtightness of the shell itself is not considered in this device. Furthermore, in the device described in Patent Document 1, the coating tip is not housed within the shell, and the sealing cap only covers a portion of the coating tip. That is, in the device described in Patent Document 1, the airtightness of the shell to the container is not ensured, and the coating tip is not fully protected. Therefore, air can easily enter the container, and the coating tip can deteriorate, potentially leading to deterioration of the adhesive and / or sealant inside the container. Furthermore, in the device described in Japanese Patent Application Publication No. 2019-508236, the leaf spring will not bend if the free end of the leaf spring is not pressed, and thus cannot apply pressure to the container. This disclosure was made in view of the above-mentioned situation, and provides a container with improved air resistance and the ability to easily eject contents contained in an inner container within an outer container.

[0005] The container involved in the first embodiment comprises: an inner container having a nozzle portion for spraying out the filled contents; a cylindrical outer container made of hard resin containing the inner container and having an opening formed on its outer peripheral wall; a pressing portion of elasticity provided on the outer peripheral wall and covering the opening; and a cap covering the nozzle portion protruding from the outer container and being removable relative to the outer container.

[0006] As a container in the second embodiment, in the container described in the first embodiment, the end of the outer container on the side opposite to the lid further has a base.

[0007] As a container involved in the third embodiment, in the container described in the first or second embodiment, a pair of openings covered by the pressing part are provided symmetrically with respect to the central axis of the outer container.

[0008] As a container in the fourth embodiment, in the container described in the third embodiment, the pair of pressing parts further have a connecting part of the elastic system that integrally connects the pressing parts by wrapping around the outer peripheral wall of the outer container.

[0009] As a container in the fifth embodiment, in the container described in the fourth embodiment, the container further has an extension of the elastic mechanism extending from the connecting portion toward the base of the outer container.

[0010] As the container involved in the sixth embodiment, in any of the containers described in the first to fifth embodiments, the outer periphery of the lid is formed with multiple protruding ribs.

[0011] As the container involved in the seventh embodiment, in any of the containers described in the first to sixth embodiments, the outer peripheral wall of the outer container gradually widens from the end on the lid side toward the base.

[0012] As the container involved in the eighth embodiment, in any of the containers described in the first to seventh embodiments, the contents are an adhesive.

[0013] As the container involved in the ninth embodiment, in the container described in the eighth embodiment, the inner container is made of polyolefin.

[0014] As the container involved in the tenth embodiment, in the container described in the ninth embodiment, the lid is made of polyolefin.

[0015] As the container involved in the eleventh embodiment, in any of the containers described in the second to tenth embodiments, a desiccant is provided inside the base.

[0016] As the container involved in the twelfth embodiment, in the container described in any of the first to eleventh embodiments, the surface of the pressing part is formed with a recess.

[0017] As the container involved in the thirteenth embodiment, in any of the containers described in the first to twelfth embodiments, the pressing part has a raised portion that protrudes from the outer peripheral wall of the outer container.

[0018] As the container involved in the fourteenth embodiment, in the container described in the thirteenth embodiment, the maximum thickness of the raised portion is in the range of 0.2 mm or more and 1.0 mm or less.

[0019] As the container involved in the fifteenth embodiment, in the container described in any of the first to fourteenth embodiments, the A hardness of the elastomer is in the range of 40 or higher and lower than 80.

[0020] As for the container involved in the sixteenth embodiment, in the containers described in any of the first to fifteenth embodiments, the moisture permeability of the elastomer in a 0.5 mm thick sample, as determined according to JIS Z 0208, is less than 2.0 g / m³. 2 ·24hr.

[0021] As for the container involved in the seventeenth embodiment, in the containers described in any of the first to sixteenth embodiments, the oxygen permeability coefficient of the elastomer, as determined according to JIS K 7126, is less than 1.0 × 10⁻⁶. -15 mol·m / Pa·s·m 2 .

[0022] According to the container in the first embodiment, the opening formed on the outer peripheral wall of the outer container is covered by a pressing part of an elastic mechanism. Therefore, by pressing the pressing part with a finger to press the inner container, the contents filled in the inner container can be easily ejected from the nozzle.

[0023] Furthermore, according to the container in the first embodiment, the lid is installed on the outer container and covers the nozzle portion protruding from the outer container. Therefore, compared to a configuration where the lid is detachably installed in the inner container, the container's air resistance can be improved.

[0024] Furthermore, according to the container involved in the first embodiment, a cylindrical outer container made of rigid resin contains an inner container. Therefore, even if the container is accidentally pressed, the contents will be prevented from being ejected from the nozzle of the inner container.

[0025] According to the container involved in the second scheme, the container can be placed on an operating table or similar surface with the base facing down and the nozzle facing up.

[0026] According to the container involved in the third scheme, when pressing a pair of pressing parts to make the contents spray out from the nozzle, it is easy to hold the pair of pressing parts with the thumb and forefinger to press them.

[0027] According to the container involved in the fourth scheme, compared with the configuration in which a pair of pressing parts are not integrally connected, the pressing parts are prevented from peeling off from the outer container.

[0028] According to the container involved in the fifth scheme, compared with the configuration without the extension, the pressing part is prevented from peeling off from the outer container.

[0029] According to the sixth scheme, the container is easy to grip when loading and unloading the lid.

[0030] According to the container in the seventh embodiment, the outer container gradually widens in diameter from the end on the lid side towards the base. Therefore, when the container is placed on an operating table or similar surface with the nozzle facing upwards, it is less likely to tip over.

[0031] According to the container involved in the eighth scheme, the adhesive filling the inner container is not prone to deterioration when not in use.

[0032] According to the ninth scheme, the adhesive residue inside the inner container is not easily cured.

[0033] According to the container involved in the tenth scheme, the adhesive residue at the front end of the nozzle covered by the cover is not easy to cure.

[0034] The container involved in the eleventh scheme is capable of drying the internal space of the container.

[0035] According to the container involved in the twelfth scheme, when the pressing part is pressed, the thumb and index finger can fit into the concave part.

[0036] According to the container involved in the thirteenth scheme, the location of the pressing part can be determined by feeling.

[0037] According to the container involved in the fourteenth embodiment, compared with the configuration where the maximum thickness of the raised portion is less than 0.2 mm, the location of the pressing part can be easily determined by feeling. In addition, compared with the configuration where the maximum thickness of the raised portion exceeds 1.0 mm, the inner container can be easily pressed by using the thumb and forefinger to press the pressing part.

[0038] According to the container involved in the fifteenth embodiment, compared with a structure where the A hardness of the elastomer is less than 40, it is easier to adjust the amount of contents ejected by pressing the pressing part. Furthermore, compared with a structure where the A hardness of the elastomer is 80 or higher, it is easier to adjust the amount of contents ejected by pressing the pressing part.

[0039] According to the container involved in the sixteenth scheme, the moisture permeability of the elastomer in the 0.5 mm thick sample is 2.0 g / m³. 2 • Compared to structures that last for more than 24 hours, the moisture barrier properties of the container are improved.

[0040] According to the container involved in Scheme 17, the oxygen permeability coefficient of the elastomer is 1.0 × 10⁻⁶. -15 mol·m / Pa·s·m 2 Compared to the above configuration, the container's air resistance is improved. Attached Figure Description

[0041] Figure 1 This is a front view of the container according to an embodiment of this disclosure. Figure 2 This is a side view of the container according to an embodiment of this disclosure. Figure 3 This is a front cross-sectional view of the container according to an embodiment of this disclosure. Figure 4 This is a front cross-sectional view of the container according to the embodiments of this disclosure with the lid removed. Figure 5 This is an enlarged front cross-sectional view of the container surrounding the pressing part according to an embodiment of the present disclosure. Figure 6 This is a perspective view of the container according to an embodiment of the present disclosure. Figure 7 This is a perspective view of the container according to the embodiments of this disclosure with the lid removed. Figure 8 This is an exploded perspective view of the container according to an embodiment of this disclosure. Figure 9 This is a perspective view of the outer container according to an embodiment of the present disclosure. Figure 10 This is a schematic diagram of the outer container involved in the embodiments of this disclosure when grasped with the thumb and forefinger. Detailed Implementation

[0042] according to Figures 1-10 An example of a container involved in an embodiment of this disclosure will be described.

[0043] The items shown herein are exemplary and are intended to illustrate embodiments of this disclosure, and are described in order to provide a description of the principles and conceptual features of this disclosure that are considered most effective and readily understood. In this regard, only a detailed structure of this disclosure is intended to enable a basic understanding of it, and various forms of how this disclosure may actually be implemented are explained to those skilled in the art by way of description in conjunction with the accompanying drawings.

[0044] (Container 10) like Figure 8 As shown, the container 10 according to this embodiment includes an inner container 20 filled with contents and an outer container 70 containing and protecting the inner container 20. A lid 40 and a base 50 are mounted on the outer container 70. In addition, a desiccant 60 is stored in the base 50.

[0045] (Container 20) The inner container 20 includes a main body 22 and a nozzle 24. For example... Figure 3 , Figure 4 and Figure 8As shown, the main body 22 is a bottomed cylindrical component extending in one direction. The main body 22 is flexible. The main body 22 has a bottom 22a and an opening 22b formed at the end opposite to the bottom 22a. In addition, an external thread 22c is formed on the outer peripheral wall of the end on the side of the opening 22b of the main body 22.

[0046] Inside the main body 22, as an example of the contents, a liquid, paste, or jelly-like adhesive is filled. Specific examples of adhesives include: 2-cyanoacrylate adhesives, epoxy resin adhesives, rubber adhesives, urethane resin adhesives, and silicone resin adhesives.

[0047] It should be noted that the contents filled in the main body 22 of the contents container 20 of this disclosure are not limited to adhesives, and their form is not limited to liquid, paste, or jelly. The contents of this disclosure can be, for example, chemical products such as hardeners, coating agents, shoe polish, and wax; food products such as wasabi, ginger, chili peppers, garlic, and chocolate; daily necessities such as toothpaste, cosmetics, and hair dyes; pharmaceuticals such as ointments; and stationery such as pigments.

[0048] (Nozzle section 24) The nozzle portion 24 is located at the end of the main body portion 22 on the side of the opening 22b. It is a generally cylindrical component that extends in one direction and has openings at both ends in the longitudinal direction. In the nozzle portion 24, the front end portion 24a on the side opposite to the opening 22b of the main body portion 22 gradually narrows to form a cone shape. In the nozzle portion 24, the end of the main body portion 22 on the side of the opening 22b has an enlarged diameter portion 24b, which is a peripheral wall with a larger diameter than the other peripheral walls of the nozzle portion 24. In addition, in the nozzle portion 24, an internal thread portion 24c is formed on the inner peripheral wall of the enlarged diameter portion 24b, corresponding to the external thread portion 22c of the main body portion 22. The nozzle portion 24 is connected to the main body portion 22 by screwing the internal thread portion 24c and the external thread portion 22c together.

[0049] The main body 22 of the inner container 20 is flexible. As a result, by pressing the peripheral wall of the main body 22, the contents such as adhesive filled in the main body 22 are ejected from the opening on the front end 24a side of the nozzle 24.

[0050] The inner container 20 is preferably made of a material that is inert to adhesives and does not impermeable or permeable to adhesives. Specifically, the inner container 20 is preferably made of polyolefin resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer resin, ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate, and more preferably of polyolefin resins. That is, the inner container 20 is more preferably made of polyolefin. It should be noted that the material forming the inner container 20 involved in this disclosure is not particularly limited, and may also be a metal such as aluminum, tin, or lead.

[0051] (Outer container 70) like Figure 9 As shown, the outer container 70 is a component that contains the inner container 20 while the front end of the nozzle portion 24 protrudes. The outer container 70 includes a main body portion 72 and an elastic body portion 80.

[0052] (Main Body Section 72) The main body 72 is a generally cylindrical component extending in one direction and opening at both ends in the longitudinal direction. The outer peripheral wall of the main body 72 gradually widens from the end on the nozzle 24 side of the inner container 20 towards the end opposite to the nozzle 24, forming a generally tapered shape. Figure 8 As shown, the inner container 20 is inserted into the inner side of the main body 72 through an opening on the side opposite to the side protruding from the front end of the nozzle portion 24 of the inner container 20. Additionally, as... Figure 3 and Figure 4 As shown, the main body 72 has a structure that can cooperate with the outer diameter portion of the enlarged diameter portion 24b of the inner container 20 so that the front end of the nozzle portion 24 of the inner container 20 inserted into the main body 72 protrudes.

[0053] In the main body 72, an external thread 72a is formed on the outer peripheral wall of the end of the inner container 20 on the nozzle portion 24 side. In addition, in the main body 72, a mating portion 72b is formed on the end opposite to the side that protrudes from the front end of the nozzle portion 24 of the inner container 20. This mating portion 72b has a structure that can mate with the inner wall of the outer peripheral wall of the base 50, which will be described later.

[0054] On the outer peripheral wall of the main body 72, such as Figure 3 , Figure 4 , Figure 9 As shown, in the radial view from the main body 72, an opening 74, which is approximately rectangular and extends through the outer peripheral wall, is formed at a location overlapping the portion of the inner container 20 closer to the bottom than the external threaded portion 22c of the main body 22. The opening 74 is rectangular in radial view from the main body 72, and a pair of openings 74 are formed on the outer peripheral wall of the main body 72 at positions symmetrical with respect to the central axis of the main body 72. That is, a pair of openings 74 are provided symmetrically with respect to the central axis of the outer container 70 on the outer peripheral wall of the outer container 70.

[0055] On the outer peripheral wall of the main body 72, such as Figure 9 As shown, a covering portion 76 is formed at least around the opening 74. The covering portion 76 is recessed relative to the outer peripheral wall and serves as the area covered by the elastomeric portion 80, which will be described later. The covering portion 76 has a first covering portion 77 formed between the external thread portion 72a and the mating portion 72b, and a second covering portion 78 formed in the mating portion 72b.

[0056] A first cover portion 77 is formed around a pair of openings 74, wound circumferentially around the outer peripheral wall of the main body portion 72. In other words, the openings 74 are located between the two edges of the first cover portion 77 along the axial direction of the main body portion 72. Furthermore, on the first cover portion 77, a pair of protruding ribs 77a are formed on a portion of the area held by the pair of openings 74 along the circumferential direction. These protruding ribs 77a extend axially and stand radially upright, flush with the outer peripheral wall of the main body portion 72. Additionally, the first cover portion 77 has a groove-shaped first extension groove 77b extending axially toward the mating portion 72b and connecting to the second cover portion 78.

[0057] The second cover portion 78 is formed such that a portion of the peripheral wall of the mating portion 72b is wound circumferentially around the outer peripheral wall of the other mating portion 72b. In addition, the second cover portion 78 has a groove-shaped second extension groove 78b that extends along the axial direction of the outer container 70 toward the first extension groove 77b of the first cover portion 77 and engages with the first extension groove 77b.

[0058] The main body 72 is formed of a rigid resin. The rigid resin forming the main body 72 is preferably a synthetic resin that is inert relative to the adhesive and does not impregnate or permeate the adhesive. Specifically, the rigid resin forming the main body 72 is preferably a polyolefin resin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer resin, or ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate, and more preferably a polyolefin resin.

[0059] On the outer peripheral wall of the main body 72, the maximum thickness of the portion overlapping the main body 22 of the inner container 20 in a radial view is preferably in the range of 1.0 mm or more and 2.0 mm or less. Furthermore, the maximum thickness of this portion is more preferably in the range of 1.2 mm or more and 1.8 mm or less. In this embodiment, the maximum thickness of this portion is 1.5 mm.

[0060] It should be noted that the details of the elastomer part 80 will be described later.

[0061] (Cover 40) like Figures 1-3 , Figure 6 , Figure 8 As shown, the cap 40 is detachably disposed at the end of the outer container 70, which is the side where the nozzle portion 24 of the inner container 20 protrudes. Furthermore, the cap 40 is a cylindrical component that covers the nozzle portion 24 of the inner container 20 protruding from the outer container 70. The cap 40 has an outer cylindrical portion 42 and an inner cylindrical portion 44.

[0062] The outer cylinder portion 42 is a cylindrical section that is closed at one end and open at the other. The closed portion of the outer cylinder portion 42 is the top 42a. On the inner circumference of the open side of the outer cylinder portion 42, an internal thread portion 42b is formed, corresponding to the external thread portion 72a of the outer container 70. The cover 40 is installed on the outer container 70 by screwing the internal thread portion 42b of the outer cylinder portion 42 to the external thread portion 72a of the outer container 70. The outer cylinder portion 42 expands in diameter from the top 42a toward the opening to form a tapered shape. When the cover 40 is installed on the outer container 70, the wall surface of the outer circumference of the outer cylinder portion 42 is along the wall surface of the outer circumference of the outer container 70 and is substantially flush with it.

[0063] On the outer cylinder portion 42, a plurality of protruding ribs 42c are formed, which stand radially from the outer periphery of the outer cylinder portion 42 and extend along the axial direction of the outer cylinder portion 42. Specifically, four protruding ribs 42c are formed on the outer cylinder portion 42 in an axially symmetrical manner with respect to the central axis of the outer cylinder portion 42.

[0064] The inner cylinder portion 44 is a cylindrical portion that stands upright from the inner wall of the top 42a of the outer cylinder portion 42 toward the opening of the outer cylinder portion 42. The end of the inner cylinder portion 44 is open on the opening side of the outer cylinder portion 42. When the cover 40 is installed on the outer container 70, the inner cylinder portion 44 engages with the outer peripheral wall of the front end portion 24a of the nozzle portion 24 of the inner container 20, and the front end portion 24a is housed inside.

[0065] The cover 40 is formed of a rigid resin. The rigid resin forming the cover 40 is preferably a synthetic resin that is inert relative to the adhesive and does not impregnate or permeate the adhesive. Specifically, the rigid resin forming the cover 40 is preferably a polyolefin resin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, or ethylene-vinyl alcohol copolymer, nylon, or polyethylene terephthalate, and more preferably a polyolefin resin.

[0066] (Base 50) like Figures 1-3 , Figure 6 , Figure 8 As shown, the base 50 is a cylindrical component that can be detachably attached to the mating part 72b of the outer container 70. The base 50 has an outer cylindrical part 52, an inner cylindrical part 54, and a connecting part 56.

[0067] The outer cylindrical portion 52 is a cylindrical portion with openings at both ends. One end of the outer cylindrical portion 52 is mounted to the mating portion 52a of the outer container 70 by engaging its inner peripheral wall with the outer peripheral wall of the mating portion 72b. The end of the outer cylindrical portion 52 opposite to the mating portion 52a is a foot portion 52b. The end face of the foot portion 52b of the outer cylindrical portion 52 mounted on the outer container 70 is orthogonal to the central axis of the outer container 70. The outer peripheral portion of the outer cylindrical portion 52 expands in diameter from the mating portion 52a side to the foot portion 52b side. When the base 50 is mounted on the outer container 70, the wall surface of the outer peripheral portion of the outer cylindrical portion 52 is along the wall surface of the outer peripheral wall of the outer container 70 and is approximately flush with it.

[0068] The inner cylinder portion 54 is disposed inside the outer cylinder portion 52, and is a bottomed cylindrical portion with an end opening on the mating portion 52a side. The connecting portion 56 is a portion that connects the outer cylinder portion 52 and the inner cylinder portion 54, and separates the space between the outer cylinder portion 52 and the inner cylinder portion 54 to prevent airflow between the mating portion 52a side and the foot portion 52b side.

[0069] The base 50 is formed of a rigid resin. The rigid resin forming the base 50 is preferably a synthetic resin that is inert to adhesives and does not impregnate or permeate with adhesives. Specifically, the rigid resin forming the base 50 is preferably a polyolefin resin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer resin, or ethylene-vinyl alcohol copolymer resin, nylon, or polyethylene terephthalate, and more preferably a polyolefin resin.

[0070] When the base 50 and the cover 40 are installed on the outer container 70, the internal space of the container 10 is sealed. That is, when the base 50 and the cover 40 are installed on the outer container 70, the container 10 has air resistance.

[0071] (Desiccant 60) The desiccant 60 is a cylindrical component housed inside the inner cylinder 54 of the base 50. The desiccant 60 absorbs moisture contained in the air within the space enclosed by the outer container 70, the cover 40, and the base 50. In other words, the desiccant 60 absorbs moisture contained in the air within the internal space of the container 10.

[0072] (Elastomer part 80) like Figures 1-4 , Figure 8 , Figure 9 As shown, the elastic body portion 80 is an elastic component provided on the outer peripheral wall of the main body portion 72, covering the cover portion 76. The elastic body portion 80 has a first elastic body portion 82 covering the first cover portion 77 and a second elastic body portion 90 covering the second cover portion 78.

[0073] (First elastic body part 82) The first elastic body portion 82 is provided as a first covering portion 77 covering the main body portion 72, and is formed to be wound around the outer peripheral wall of the main body portion 72 in the circumferential direction. The first elastic body portion 82 has a pressing portion 84 and a connecting portion 86. The first elastic body portion 82 is formed such that the portion other than the pressing portion 84 is substantially flush with the outer peripheral wall of the main body portion 72.

[0074] (Pressing part 84) The pressing portion 84 is a portion on the first elastic body portion 82 that covers the opening 74 of the main body portion 72. A pair of pressing portions 84 are formed corresponding to the pair of openings 74. The pressing portion 84 has a raised portion 84a and a recessed portion 84b.

[0075] like Figure 1 , Figure 2 , Figures 5-9 As shown, the raised portion 84a is a portion of the pressing portion 84 that protrudes from the outer peripheral wall of the main body portion 72 and is approximately rectangular when viewed radially from the main body portion 72. The maximum thickness T of the raised portion 84a in the radial direction of the main body portion 72 is... max Preferably, the thickness is within the range of 0.2 mm to 1.0 mm. Additionally, the maximum thickness T of the raised portion 84a... max More preferably, it is in the range of 0.3 mm or more and 0.5 mm or less. The maximum radial thickness T of the raised portion 84a in the embodiment is... max It is 0.35mm.

[0076] The recess 84b is formed in the central portion of the surface of the raised portion 84a, is recessed relative to the raised portion 84a, and is elliptical in radial view. The maximum depth of the recess 84b is preferably in the range of 0.2 mm or more and 0.8 mm or less. Furthermore, the maximum depth of the recess 84b is more preferably in the range of 0.4 mm or more and 0.6 mm or less. In the embodiment, the maximum depth of the recess 84b is 0.5 mm.

[0077] The pressing part 84 is formed such that the portion on the inner peripheral wall side of the main body 72 is approximately flush with the inner peripheral wall of the main body 72. In addition, the pressing part 84 is elastically deformed after being pressed radially from the outer peripheral side and reaches the main body 22 of the inner container 20, thereby pressing the outer peripheral wall of the main body 22.

[0078] (Connection 86) The connecting portion 86 is a part on the first elastic body portion 82 that integrally connects a pair of pressing portions 84 by means of a first covering portion 77 wound around the outer peripheral wall of the main body portion 72 in a 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 extending groove 77b of the first covering portion 77. The first extension portion 86a extends along the first extending groove 77b toward the mating portion 72b and connects with the second elastic body portion 90. That is, the first extension portion 86a of the connecting portion 86 extends toward the base 50 that mates with the mating portion 72b. The first extension portion 86a is an example of an extension portion.

[0079] (Second elastic body part 90) The second elastic body portion 90 is configured as a second covering portion 78 covering the mating portion 72b, and is formed to be wound around the outer peripheral wall of the mating portion 72b in the circumferential direction. The second elastic body portion 90 has a second extension groove 78b formed in the mating portion 72b, and a second extension portion 92 integrally connecting the second elastic body portion 90 to the first extension portion 86a of the first elastic body portion 82. The second elastic body portion 90 is formed to be substantially flush with the outer peripheral wall of the mating portion 72b.

[0080] (Regarding the material of elastomer part 80) The elastomer forming the elastomer portion 80 preferably possesses a combination of flexibility (hardness A), air resistance (moisture permeability, oxygen permeability coefficient), moldability, and fusion properties. Specifically, the elastomer is preferably an elastomer composition X containing an isobutylene block copolymer A composed of isobutylene polymer blocks and aromatic vinyl polymer blocks, and a medium- or low-pressure polyethylene resin B. In this embodiment, the elastomer portion 80 is formed from the aforementioned elastomer composition X.

[0081] Isobutylene polymer blocks are blocks containing structural units derived from isobutylene compounds (hereinafter also referred to as isobutylene compound units).

[0082] In the overall structural unit constituting the isobutylene polymer block, from the viewpoint of water vapor barrier properties at high temperatures, the content of the isobutylene compound unit is preferably 50% by mass or more, more preferably 60% by mass or more, and even more preferably 70% by mass or more.

[0083] The isobutylene polymer blocks may contain structural units derived from monomers other than isobutylene, to the extent that the effects of this disclosure are not impaired. Examples of other monomers include: aliphatic alkenes, alicyclic alkenes, aromatic vinyl groups, dienes, vinyl ethers, vinyl silanes, vinylcarbazole, β-pinene, acenaphthene, etc.

[0084] In the isobutylene block copolymer A, the content of isobutylene polymer blocks is preferably 50-90% by mass, more preferably 55-85% by mass, and even more preferably 60-80% by mass.

[0085] The aromatic vinyl polymer blocks contain structural units derived from aromatic vinyl compounds (hereinafter also referred to as aromatic vinyl compound units). Examples of such aromatic vinyl compounds include styrene, α-methylstyrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 1,3-dimethylstyrene, vinylnaphthalene, etc., and two or more of these compounds may be used in combination. Among these, readily available styrene is preferred.

[0086] In the total structural unit constituting the aromatic vinyl polymer block, the content of the aromatic vinyl compound unit is preferably 80% by mass or more, more preferably 90% by mass or more, and even more preferably 95% by mass or more.

[0087] The aromatic vinyl polymer blocks may also contain structural units from monomers other than aromatic vinyl compounds, without impairing the effects of this disclosure. Examples of other monomers include comonomers capable of ion polymerization such as butene, pentene, hexene, butadiene, isoprene, and methyl vinyl ethers.

[0088] From a formability point of view, in the isobutylene block copolymer A, the content of aromatic vinyl polymer blocks is preferably 10 to 60% by mass, more preferably 15 to 50% by mass, and even more preferably 20 to 40% by mass.

[0089] From the viewpoint of air resistance, the weight-average molecular weight of isobutylene block copolymer A is preferably 10,000 or more, and from the viewpoint of flexibility and moldability, it is preferably 300,000 or less. From these viewpoints, the weight-average molecular weight of isobutylene block copolymer A is preferably 10,000 to 300,000, more preferably 20,000 to 200,000, and even more preferably 30,000 to 100,000.

[0090] The hardness of the isobutylene block copolymer A is preferably 10-50, more preferably 15-45, and even more preferably 20-40.

[0091] The density of isobutylene block copolymer A is preferably 0.920–0.970 g / cm³. 3 More preferably, it is 0.930–0.960 g / cm³. 3 More preferably, it is 0.940–0.950 g / cm³. 3 .

[0092] In the elastomer composition X, the content of isobutylene block copolymer A is preferably 25-99% by mass, more preferably 25-98% by mass, and even more preferably 50-95% by mass.

[0093] From a fusion point of view, the elastomer composition used in the container of this disclosure preferably contains polyethylene resin. Polyethylene resins can be broadly classified into low- and medium-pressure polyethylene resins and high-pressure polyethylene resins based on their manufacturing methods. Low- and medium-pressure methods yield linear high-density polyethylene resin (HDPE), while high-pressure methods yield low-density polyethylene resin (LDPE) with long-chain branches. High-density polyethylene resins have high gas resistance, while low-density polyethylene resins have low gas resistance. Furthermore, in recent years, linear low-density polyethylene resin (L-LDPE) has been known as a third type of polyethylene resin manufactured using the medium-pressure method, which has higher gas resistance than high-pressure polyethylene resins. Therefore, as the low- and medium-pressure polyethylene resins of this disclosure, at least one of high-density polyethylene resin and linear low-density polyethylene resin is preferred, and high-density polyethylene resin is more preferred.

[0094] High-density polyethylene resin is manufactured in a low-pressure process by polymerizing ethylene at a temperature of 50–250°C and a pressure of 50–200 atmospheres using a Ziegler catalyst (titanium-based); and in a medium-pressure process by polymerizing ethylene at a temperature of 50–250°C and a pressure of 50–200 atmospheres using a Philips catalyst (chromium-based) or similar.

[0095] From the perspective of air resistance, the preferred density of high-density polyethylene resin is 0.942 g / cm³. 3 More preferably, it is 0.945–0.970 g / cm³. 3 .

[0096] From the perspective of air resistance, the preferred density of linear low-density polyethylene resin is 0.915–0.935 g / cm³. 3 More preferably, it is 0.918–0.930 g / cm³. 3 .

[0097] High-density polyethylene (HDPE) and low-density polyethylene (LDPE) are homopolymers of polyethylene, while linear low-density polyethylene (L-LDPE) is a copolymer of ethylene and α-olefins. Examples of α-olefins include propylene, 1-butene, 1-pentene, 1-hexene, 3-methylpentene-1, 1-octene, 1-decene, and 4-methylpentene-1.

[0098] In the total structural units constituting linear low-density polyethylene resin, the content of structural units derived from α-olefins is preferably 4 to 17% by mass, more preferably 5 to 15% by mass.

[0099] Linear low-density polyethylene resin is manufactured by copolymerizing ethylene with α-olefins using a Philips catalyst employed in the medium-pressure process. This copolymerization process creates shorter branched structures in existing high-density polyethylene resin, and the density is appropriately reduced by utilizing these shorter branched chains. Therefore, linear low-density polyethylene resin is a type of polyethylene resin with a more linear structure and more branched chains than low-density polyethylene resin (LDPE) manufactured by existing high-pressure methods. Linear low-density polyethylene resin can be manufactured using gas-phase polymerization processes utilizing fluidized bed reactors, stirred bed reactors, tubular reactors, etc., based on methods described in, for example, Japanese Patent Application Publication Nos. 54-148093 and 54-154488 (gas-phase polymerization using a fluidized bed reactor).

[0100] From a formability point of view, the melt mass flow rate (MFR) of medium- and low-pressure polyethylene resin B is preferably 0.5 to 50 g / 10 min at 190°C and a load of 21.2 N, more preferably 1 to 30 g / 10 min, and even more preferably 1.5 to 25 g / 10 min.

[0101] The moisture permeability of medium- and low-pressure polyethylene resin B is preferably below 2.0 g / m³. 2 • 24h, preferably below 1.8g / m 2 • 24h, further optimization to below 1.6g / m 2 • 24h, further optimization to below 1.0g / m 2 • 24h. Among them, water permeability refers to the water permeability of a sheet sample with a thickness of 0.5mm at 40℃, measured by JIS Z 0208 (cup method).

[0102] The oxygen permeability coefficient of medium- and low-pressure polyethylene resin B is preferably lower than 1.0 × 10⁻⁶. -15 mol·m / Pa·s·m 2 More preferably, below 0.8×10 -15 mol·m / Pa·s·m 2 Further optimization is needed for values ​​below 0.6×10 -15 mol·m / Pa·s·m 2 The oxygen permeability coefficient refers to the value measured according to the method in JIS K 7126.

[0103] From the viewpoint of moldability and blendability, the content of medium- and low-pressure polyethylene resin B is 5 parts by mass or more, relative to 100 parts by mass of isobutylene block copolymer A, and from the viewpoint of flexibility, this content is 300 parts by mass or less. From these viewpoints, the content of medium- and low-pressure polyethylene resin B is 1 to 100 parts by mass relative to 100 parts by mass of isobutylene block copolymer A, preferably 2 to 70 parts by mass, more preferably 3 to 60 parts by mass, and even more preferably 5 to 30 parts by mass.

[0104] Furthermore, from the viewpoint of flexibility, the content of medium- and 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, and even more preferably 4 to 25% by mass.

[0105] From the viewpoint of softness and formability, the elastomer composition X may further contain a rubber softener C. Examples of rubber softeners C include: mineral oils such as paraffin oil, naphthenic oil, and aromatic oil, and synthetic softeners such as polyolefin oils such as polyalphaolefin and polybutene. From the viewpoint of moisture barrier properties, polyolefin oils are preferred, and polybutene oils are more preferred.

[0106] From the perspective of long-term heat resistance and gas resistance, the kinematic viscosity of rubber softener C at 40°C is preferably 3,000 to 20,000 mm³. 2 / s, more preferably 4,000 to 17,500 mm 2 / s, more preferably 5,000 to 15,000 mm 2 / s.

[0107] From the viewpoint of long-term heat resistance and gas barrier properties, the number average molecular weight of the rubber softener C is preferably 600 to 2000, more preferably 800 to 1500, and even more preferably 900 to 1200.

[0108] Furthermore, from the viewpoint of moldability, the content of rubber softener C in the elastomer composition X is preferably 50% by mass or less, more preferably 30% by mass or less.

[0109] From the viewpoint of the compatibility of L-LDPE, the elastomer composition X may further contain a block copolymer D having crystalline ethylene blocks and amorphous ethylene-α-olefin blocks.

[0110] Examples of α-olefins include 1-butene, 1-octene, 1-hexene, and 4-methylpentene-1. Among these, 1-butene is preferred. As block copolymer D, a block copolymer (CEBC) having crystalline ethylene blocks and amorphous ethylene-butene blocks is also preferred. In this disclosure, block copolymer D can be used alone or in combination of two or more types.

[0111] Furthermore, regarding the bonding state of the blocks, the block copolymer D possesses both linear and radial structures. Examples of commercially available products with linear structures include DYNARON 6101 and DYNARON 6200P (manufactured by JSR Corporation), while examples of commercially available products with radial structures include DYNARON 6201B (manufactured by JSR Corporation). In this disclosure, substances with any structure are preferred, but given the same weight-average molecular weight, substances with radial structures exhibiting high melt flowability are more preferred.

[0112] From the viewpoint of compatibility between isobutylene block copolymer A and low-density polyethylene resin B, the hardness of A in block copolymer D is preferably 40 or higher, and from the viewpoint of the softness of the composition, the hardness of A is preferably 95 or lower. From these viewpoints, the hardness of A in block copolymer D is preferably 40 to 95, more preferably 50 to 90, and even more preferably 60 to 80.

[0113] From the viewpoint of compatibility between isobutylene block copolymer A and low-density polyethylene resin B, the content of block copolymer D is preferably 1 part by mass or more relative to 100 parts by mass of isobutylene block copolymer A, and from the viewpoint of flexibility, this content is preferably 50 parts by mass or less. From these viewpoints, the content of block copolymer D relative to 100 parts by mass of isobutylene block copolymer A is preferably 50 parts by mass or less, more preferably 30 parts by mass or less, and even more preferably 20 parts by mass or less.

[0114] In addition, from the viewpoint of water vapor barrier properties, the elastomer composition X may also contain inorganic filler E.

[0115] Examples of inorganic fillers E include: talc, mica, calcium carbonate, clay, titanium dioxide, magnesium carbonate, barium sulfate, calcium sulfate, calcium sulfite, calcium phosphate, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, magnesium oxide, iron oxide, zinc oxide, aluminum oxide, silicon dioxide, diatomaceous earth, dolomite, gypsum, calcined clay, asbestos, calcium silicate, bentonite, silica, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, cement, zirconium oxide powder, etc. Among these, talc is preferred from the perspective of water vapor barrier and dispersibility.

[0116] As inorganic fillers, substances of various shapes such as granular, plate-shaped, rod-shaped, fibrous, and whisker-shaped are known. In this disclosure, from the viewpoint of water vapor barrier and air barrier properties, plate-shaped fillers are preferred. Plate-shaped refers to a shape with a length-to-diameter ratio (length / diameter) of 5 or more, preferably 10 to 500.

[0117] From the viewpoint of dispersibility, the median volumetric diameter of the inorganic packing material E is preferably 1.5 μm or more, and from the viewpoint of water vapor barrier properties, this median diameter is preferably 50 μm or less. From these viewpoints, the median volumetric diameter of the plate-shaped inorganic packing material is preferably 1.5 to 50 μm, more preferably 1.75 to 30 μm, and even more preferably 2.0 to 15 μm.

[0118] From the viewpoint of flexibility, the content of inorganic filler E is preferably 500 parts by weight or less relative to 100 parts by weight of isobutylene block copolymer A. From these viewpoints, the content of inorganic filler E is preferably 500 parts by weight or less relative to 100 parts by weight of isobutylene block copolymer A, more preferably 400 parts by weight or less, and even more preferably 300 parts by weight or less.

[0119] In addition, the elastomer composition X may, as needed and without impairing the effects of this disclosure, contain reinforcing agents such as carbon black, silica, carbon fiber, and glass fiber; and various additives such as insulating and thermally conductive fillers, pigments, flame retardants, antistatic agents, release agents, tackifiers, crosslinking agents, crosslinking aids, foaming agents, and fragrances.

[0120] In addition, the elastomer composition X may also contain other thermoplastic resins and thermoplastic elastomers to a extent that does not impair the effects of this disclosure.

[0121] The elastomer composition X in this disclosure is obtained by appropriately mixing and curing an isobutylene block copolymer A, a medium- or low-pressure polyethylene resin B, and optional rubber softener C, block copolymer D, inorganic filler E, and other additives.

[0122] The term "mixing" as used in this disclosure is not particularly limited to any method that enables the various raw materials to mix well. This can involve dissolving and mixing the raw materials in an organic solvent in which they are dissolved, or mixing them by heating and melting. However, the mixing of the raw materials is preferably carried out at the melting temperature of the isobutylene block copolymer A and the medium-low pressure polyethylene resin B.

[0123] When heating, melting, and mixing various raw materials, any type of thermo-melting mixer can be used, such as a Banbury mixer, a roller mixer, or an extruder. However, considering uniform mixing and productivity, a twin-screw extruder is preferred. Regarding feeding the extruder, a mixture pre-mixed using a mixing device such as a Henschel mixer can be supplied from one hopper, or the various components can be loaded into two hoppers and then metered down via screws or similar devices below the hoppers.

[0124] The product obtained by mixing the raw materials constituting the elastomer composition X can be made into granules, powders, sheets, or other shapes depending on the application. For example, it can be melt-mixed and extruded into strands using an extruder, cooled in cold water, and simultaneously cut into cylindrical and rice-grain-shaped granules using a cutting tool. The resulting granules are typically injection-molded or extruded into specified sheet-shaped and molded products. Alternatively, the melt-mixed material can be granulated using an extruder or similar device and used as a raw material for molding processes.

[0125] From the viewpoint of ease of adjusting the amount of contents ejected, the A hardness of the elastomer composition X disclosed herein is preferably in the range of 40 or higher and lower than 80. More preferably, it is in the range of 50 or higher and lower than 75, and even more preferably, it is in the range of 60 or higher and lower than 70.

[0126] From the viewpoint of formability and fusion, the melt mass flow rate (MFR) of the elastomer composition X disclosed herein is preferably 0.1 g / 10 min or more at 190°C and a load of 21.2 N, more preferably 1.0 to 15.0 g / 10 min, even more preferably 1.0 to 10.0 g / 10 min, and it should be noted that it is even more preferably 2.0 to 4.0 g / 10 min or more.

[0127] From the viewpoint of protecting (long-term preservation) the contents, the moisture permeability of the elastomer composition X disclosed herein is preferably less than 2.0 g / m³. 2 • 24h, preferably below 1.8g / m 2 • 24h, further optimization to below 1.6g / m 2 • 24h. Among them, the water permeability refers to the water permeability of a 0.5mm thick sample at 40℃ as measured by JIS Z 0208 (cup method).

[0128] From the viewpoint of protecting (long-term preservation) the contents of the container, the oxygen permeability coefficient of the elastomer composition X disclosed herein is preferably less than 1.0 × 10⁻⁶. -15 mol·m / Pa·s·m 2 More preferably, below 0.8×10 -15 mol·m / Pa·s·m 2 Further optimization is needed for values ​​below 0.6×10 -15 mol·m / Pa·s·m 2 The oxygen permeability coefficient is a value determined according to the method in JIS K 7126.

[0129] The outer container 70 disclosed herein is obtained by two-color molding of an elastomer composition X and a polyolefin resin, such that the elastomer portion 80 is fused to the main body portion 72.

[0130] In this disclosure, fusion refers to the phenomenon where an elastomer composition X is heated above its melting point to form a melt, and then solidified at a temperature below its melting point, thereby bonding it to the interface of the fused object. When applying heat, a hot press, heated roller press, hot air generator, heating steam, ultrasonic welder, high-frequency welder, laser, etc., can be used. Therefore, even if the interface of the fused portion has a complex three-dimensional shape, it can be well fused and molded into a single unit with the complex three-dimensional shape.

[0131] Therefore, the elastomer composition X can be integrally formed with polyolefin resins to create a composite molded body. This allows for the composite molding of components with complex mating surfaces and components with mating surfaces of different shapes. The composite molded body can be obtained through molding processes such as injection molding, injection compression molding, insert molding, multi-color molding, vacuum molding, compressed air molding, blow molding, thermoforming, foam molding, laser fusion molding, and extrusion molding.

[0132] (Example) The following describes in detail examples of composite molded articles composed of the elastomer composition X disclosed herein and polyolefin resins. Various physical properties of the raw materials used in the examples and comparative examples were determined by the following methods.

[0133] <Ingredient A: Isobutylene block copolymers, etc.> [Composition of block copolymers] Proton NMR measurements were performed using a nuclear magnetic resonance (NMR) apparatus (BRUKER DPX-400, Germany) to quantify the characteristic functional groups of styrene, thereby determining the content of styrene and / or styrene derivatives, i.e., the content of aromatic vinyl polymer blocks. The content of other monomer units can also be determined by proton NMR measurements.

[0134] [Weight-average molecular weight (Mw)] Under the following test conditions, the weight-average molecular weight was obtained by measuring the molecular weight of polystyrene using gel permeation chromatography.

[0135] Measuring device Pump: JASCO (Japan Shoko Corporation), PU-980 • Column oven: Showa Denko Co., Ltd., AO-50 • Detector: Hitachi, RI (Differential Refractometer) detector L-3300 • Chromatographic column type: One each of Showa Denko Co., Ltd.'s "K-805L (8.0×300mm)" and "K-804L (8.0×300mm)" were used in series. Column temperature: 40℃ • Protective post: KG (4.6×10mm) • Eluent: Chloroform • Elution buffer flow rate: 1.0 ml / min • Sample concentration: approximately 1 mg / ml • Sample solution filtration: Disposable filter with 0.45μm pore size made of polytetrafluoroethylene • Standard sample for calibration curve: polystyrene manufactured by Showa Denko Co., Ltd.

[0136] [A Hardness] Three 2mm thick plate-shaped injection molded samples were overlapped (total 6mm), and their A hardness (value 15 seconds after the start of the test) was measured according to JIS K6253. The injection molded samples were conditioned for one day in an indoor environment at 23°C and 50% humidity before the measurement was performed.

[0137] 〔density〕 The mass and density were measured in air and water using a precision electronic hydrometer “SD-200L” manufactured by ALFA MIRAGE at 23°C.

[0138] <Component B: Polyethylene resin, etc.> 〔density〕 The mass and density were determined using a precision electronic hydrometer "SD-200L" manufactured by ALFAMIRAGE at 23°C in both atmospheric and ethanol conditions.

[0139] [Mel mass flow rate (MFR)] The test was conducted according to ASTM D1238 at 190°C and a load of 21.2 N.

[0140] [Humidity permeability] According to JIS Z 0208 (cup method), the moisture permeation cup (70 mm in diameter) manufactured by Yasuda Seiki Co., Ltd. was used, and the measurement was carried out under the conditions of 40℃×90%RH and sheet thickness of 0.5 mm.

[0141] [Oxygen permeability coefficient] The air permeability was measured at 23°C using a Toyo Seiki Manufacturing Co., Ltd. air permeability measuring device “BR-3” according to JIS K 7126 method. The device used was a 90mm × 90mm × 0.5mm caliber air-permeability measuring apparatus with a permeability area of ​​38.5cm². 2 The test specimen.

[0142] <Component C: Rubber softener> [Kinematic viscosity] The determination was performed at 40°C according to JIS Z 8803.

[0143] [Number Average Molecular Weight] The number-average molecular weight was calculated using the same method as for component A, based on the conversion to polystyrene.

[0144] <Component D: Block copolymer with crystalline ethylene blocks and amorphous ethylene-α-olefin blocks> [A Hardness] Three 2mm thick plate-shaped injection molded samples (total 6mm) were overlapped, and their A hardness (value 15 seconds after the start of the test) was measured according to JIS K6253. The injection molded samples were conditioned for one day in an indoor environment with a temperature of 23°C and a humidity of 50% before the test was performed.

[0145] 〔density〕 The mass and density were determined using a precision electronic hydrometer "SD-200L" manufactured by ALFAMIRAGE at 23°C in air and ethanol.

[0146] <Component E: Inorganic filler> [Standard median diameter for volume] Following the laser diffraction / scattering method specified in JIS M8511, 0.1 g of sample was dispersed in 10 mL of deionized water and dispersed by ultrasonic waves at 70 W for 30 seconds. The resulting slurry was then subjected to particle size distribution determination using a Malvern Mastersizer 2000. The 50% value of the cumulative fraction of the volume standard was taken as the median diameter of the volume standard.

[0147] (1) Preparation of elastomer composition (particles) The raw materials, excluding the softener (component C), are dry-mixed and then impregnated with the softener to produce a mixture. The mixture is then melt-blended and extruded into strands under the following conditions using an extruder, cooled in cold water, and cut into granules approximately 3 mm in diameter and 3 mm in thickness using a cutting tool to produce granules of the elastomer composition.

[0148] [Melting and mixing conditions] Extruder: KZW32TW-60MG-NH (trade name, manufactured by Technovel Co., Ltd.) Barrel temperature: 180~220℃ Screw speed: 300 r / min

[0149] Details of the raw materials used in manufacturing the granules of the elastomer compositions are shown in Tables 1 to 3 below. Furthermore, in manufacturing the granules of the elastomer compositions, granules of the elastomer compositions of Examples 1 to 7 and Comparative Examples 1 to 5 with different ratios of each raw material were manufactured. It should be noted that details of the elastomer compositions of Examples 1 to 7 and Comparative Examples 1 to 5 will be described later.

[0150] (Table 1) Table 1 [Component A: Isobutylene block copolymers, etc.]

[0151] (Table 2) Table 2 [Polyethylene resin, etc.]

[0152] (Table 3)

[0153] (2) Fabrication of molded parts of thermoplastic elastomer compositions Particles of the elastomeric compositions of Examples 1-7 and Comparative Examples 1-5 were injection molded under the following conditions to produce a plate with a thickness of 2 mm × width of 125 mm × length of 125 mm.

[0154] [Injection Molding Conditions] Injection molding machine: 100MSIII-10E (product name, manufactured by Mitsubishi Heavy Industries, Ltd.) Injection molding temperature: 200℃ Injection pressure: 30% Injection time: 3 seconds Mold temperature: 40℃

[0155] (3) Fabrication of composite molded parts HDPE (NIPOLON HARD 4020 manufactured by Tosoh Corporation) and L-LDPE (EVOLUE SP2520 manufactured by PrimePolymer Corporation), both polyolefin resins, were injection molded under the following conditions to produce resin plates with a thickness of 2mm × width of 125mm × length of 125mm. After being cut with a cutting machine, fusion test substrates with a thickness of 2mm × width of 25mm × length of 125mm were obtained.

[0156] [Resin Board Molding Conditions] Gate: Thin film gate Barrel temperature: 200℃ Measurement value: 55mm Pressure holding switching position: 3.8mm

[0157] The prepared resin plate was inserted into a mold with a thickness of 4 mm × width of 25 mm × length of 125 mm, and the elastomer compositions of Examples 1 to 7 and Comparative Examples 1 to 5 were injection molded to produce a long strip-shaped composite molded body.

[0158] <Injection Molding Conditions> Injection molding machine: Mitsubishi Heavy Industries, Ltd., 100MSIII-10E Injection molding temperature: 240℃ Injection pressure: 98MPa, Injection speed: 50%, Holding pressure: 20%, Holding time: 10sec Injection time: 2 seconds Mold temperature: 40℃

[0159] The following evaluation was performed on the elastomeric compositions of Examples 1-7 and Comparative Examples 1-5, and the composite molded articles using the elastomeric compositions. The composition and evaluation results of the elastomeric compositions of Examples 1-7 and Comparative Examples 1-5 are shown in Tables 4 and 5.

[0160] [Hardness A of the elastomer composition] Three 2mm thick plate-shaped injection molded body samples (total 6mm) were overlapped, and their A hardness (value 15 seconds after the start of the test) was measured according to JIS K6253. The injection molded body samples were conditioned for one day in an indoor environment at 23°C and 50% humidity before the measurement was performed.

[0161] [MFR of elastomer compositions] The test was conducted according to ASTM D1238 at 190°C and a load of 21.2 N.

[0162] [Moisture permeability of the elastomer composition] The elastomer composition is placed in a pressing template with a thickness of 0.5 mm × width of 100 mm × length of 120 mm, and hot-pressed for 2 minutes using a hot press (Toho Machinery, hydraulic molding machine TB-50-2 type) heated to 200°C, followed by cold pressing for 3 minutes, thereby producing a sheet-like pressed body with a thickness of 0.5 mm as a test piece. According to JIS Z 0208 (cup method), the moisture permeation cup (70 mm in diameter) manufactured by Yasuda Seiki Co., Ltd. was used, and the measurement was performed under the conditions of 40°C × 90% RH and sheet thickness of 0.5 mm.

[0163] [Oxygen permeability coefficient of the elastomer composition] The elastomer composition was placed in a pressing mold measuring 0.5 mm thick × 100 mm wide × 120 mm long, and hot-pressed for 2 minutes using a hot press (Toho Machinery, hydraulic molding machine TB-50-2 type) heated to 200°C, followed by cold pressing for 3 minutes to produce a sheet-like pressed specimen with a thickness of 0.5 mm. A specimen with dimensions of 90 mm × 90 mm × 0.5 mm and a permeable area of ​​38.5 cm² was also used. 2 The test specimen. The permeability was measured at 23°C using the "BR-3" air permeability measuring device manufactured by Toyo Seiki Co., Ltd., in accordance with the method of JIS K 7126.

[0164] [The fusion of composite molded parts] Using a composite molded body, at an ambient temperature of 23°C, a tensile test is performed on the layers of the elastomeric composition (skin layer) and the polyolefin resin layer (substrate layer) in a 180° direction at a speed of 50 mm / min, and the peel strength (unit: N / 25 mm) of the skin layer and the substrate layer is determined. The peel strength is preferably 120 N / 25 mm or higher.

[0165] (Table 4) Note: "Parts" and "%" represent "parts by mass" and "% by mass" respectively.

[0166] (Table 5) Note: "Parts" and "%" represent "parts by mass" and "% by mass" respectively.

[0167] As can be seen from the results shown in Tables 4 and 5 above, the elastomeric compositions of the composite molded articles in Examples 1 to 7 have excellent air resistance, and the fusion between the elastomeric compositions and polyethylene resin is also very strong. In contrast, in Comparative Examples 1 and 2, where the elastomer composition did not contain polyethylene resin, the moisture permeability exceeded 2.0 g / m³. 2 • 24hr, compared to Examples 1-7, the moisture barrier properties were poor. In Comparative Example 3, where the elastomer composition contained low-density polyethylene resin as the polyethylene resin (used as a high-density polyethylene resin), and in Comparative Example 4, where the elastomer composition contained polypropylene resin instead of polyethylene resin, the integration with HDPE was insufficient. Furthermore, in Comparative Example 5, where SEBS was used instead of isobutylene block copolymers, the moisture permeability exceeded 2.0 g / m³. 2 • 24hr, with poor water vapor barrier properties compared to Examples 1-7. It should be noted that Reference Example 1 is the result of measuring the physical properties of component A "SIBSTAR 062T" in the same way as the elastomer compositions of the Examples and Comparative Examples. It can be seen that the isobutylene block copolymer itself hardly fuses with HDPE, but by mixing it with a specified amount of medium and low pressure polyethylene resin, it shows fusion with HDPE.

[0168] (Functions and Effects) Next, the function and effects of the implementation method will be explained. It should be noted that in this explanation, when a comparative form of the implementation method is described, if the same components as the container 10 of the implementation method are used, the symbols and names of the components will be used directly in the description.

[0169] The container 10 of the embodiment has a configuration in which an opening 74 formed on the outer peripheral wall of the outer container 70 is covered by a pressing portion 84 of an elastic material. Thus, as a container 10, such as... Figure 4 and Figure 7 As shown, when the cover 40 is removed from the outer container 70, the contents of the inner container 20 can be easily ejected from the nozzle 24 by pressing the pressing part 84 with a finger or the like to press the main body 22 of the inner container 20.

[0170] Furthermore, the container 10 of the embodiment has a configuration in which a lid 40 is detachably provided to the outer container 70. In the container 10 of the embodiment, the lid 40 is mounted to the outer container 70 and covers the nozzle portion 24 of the inner container 20 protruding from the outer container 70. Therefore, compared to a configuration where the lid 40 is detachably provided to the inner container 20, the air resistance of the container 10 can be improved.

[0171] Furthermore, the container 10 of the embodiment has a rigid resin outer container 70 containing an inner container 20. Therefore, as the container 10 of the embodiment, even if the container 10 is accidentally pressed, the contents can be prevented from being ejected from the nozzle portion 24 of the inner container 20.

[0172] Furthermore, the container 10 of this embodiment has a base 50 at the end of the outer container 70 opposite to the lid 40. Therefore, the container 10 of this embodiment can be stood upright on a work surface or the like with the base 50 facing down and the front end 24a of the nozzle 24 facing up. Thus, if the user of the container 10 interrupts the operation of ejecting the contents of the inner container 20, the user can stand the container 10 upright on a work surface or the like to prevent the contents from leaking out from the nozzle 24.

[0173] Furthermore, the container 10 of this embodiment has a configuration in which a pair of openings 74 are arranged symmetrically with respect to the central axis of the outer container 70. Therefore, as in this embodiment, when the pair of pressing parts 84 are pressed to eject the contents from the nozzle part 24, the container 10 is easily grasped by the thumb and forefinger (see [link to embodiment]). Figure 10 ).

[0174] Furthermore, the container 10 of the embodiment has a connecting portion 86 that integrally connects a pair of pressing portions 84 by wrapping around the outer peripheral wall of the outer container 70. Thus, in the container 10 of the embodiment, compared with the configuration in which the pair of pressing portions 84 are not integrally connected, the pressing portions 84 are prevented from peeling off from the outer container 70.

[0175] Furthermore, the container 10 of the embodiment has a first extension 86a extending from the connecting portion 86 to the base 50. Thus, as a container 10 of the embodiment, compared with the configuration without the first extension 86a, the fusion area of ​​the elastomer portion 80 with the outer container 70 is increased, thus suppressing the peeling of the pressing portion 84 from the outer container 70.

[0176] Furthermore, the container 10 of the embodiment has a configuration in which a plurality of protruding ribs 42c are formed on the outer peripheral wall of the outer cylindrical portion 42 of the lid 40. Thus, as in the embodiment of the container 10, when a user manually loads or unloads the lid 40, their fingers will be caught on the protruding ribs, making it easy to grip the lid.

[0177] Furthermore, the container 10 of the embodiment has a configuration in which the outer peripheral wall of the outer container 70 gradually widens from the end on the lid 40 side toward the base 50. As a result, the container 10 of the embodiment is less likely to tip over when placed on an operating table or the like with the front end 24a of the nozzle portion 24 facing upwards.

[0178] Furthermore, the container 10 of the embodiment has a structure in which the contents of the inner container 20 are an adhesive. Therefore, by having air resistance, the container 10 of the embodiment can prevent the adhesive filling the inner container 20 from deteriorating when not in use.

[0179] Furthermore, the container 10 of the embodiment has an inner container 20 made of polyolefin. Therefore, in the container 10 of the embodiment, the adhesive remaining on the inside of the nozzle portion 24 is less likely to cure.

[0180] Furthermore, the container 10 of the embodiment has a lid 40 made of polyolefin. Therefore, in the container 10 of the embodiment, the adhesive remaining at the tip 24a of the nozzle portion 24 covered by the lid 40 is less likely to cure.

[0181] Furthermore, the container 10 of the embodiment has a base 50 with a desiccant 60 inside. Therefore, in the container 10 of the embodiment, the space inside the container 10 can be dried by absorbing moisture contained in the air.

[0182] Furthermore, the container 10 of the embodiment has a recess 84b formed on the surface of the pressing part 84. Therefore, when the pressing part 84 is pressed, the thumb and forefinger can fit into the recess 84b (see [link]). Figure 10 ).

[0183] Furthermore, in the container 10 of this embodiment, the pressing part 84 has a raised part 84a. Thus, in the container 10 of this embodiment, the user can determine the position of the pressing part 84 by feeling.

[0184] Additionally, the container 10 of the embodiment has a maximum thickness T of the raised portion 84a. max The thickness is configured in the range of 0.2 mm or more and 1.0 mm or less. Therefore, the maximum thickness T of the container 10 and the raised portion 84a in this embodiment is... max Compared to a thickness of less than 0.2mm, users can easily determine the position of the pressing part 84 by feel. Furthermore, the maximum thickness T of the container 10 and the raised part 84a in this embodiment... ma x Compared to a structure exceeding 1.0mm, the inner container 20 can be easily pressed by using the thumb and forefinger to press the pressing part 84.

[0185] Furthermore, the container 10 of the embodiment has a configuration where the A hardness of the elastomer composition X is in the range of 40 or higher and lower than 80. Therefore, compared to a configuration where the A hardness of the elastomer forming the pressing part 84 is lower than 40, the container 10 of the embodiment allows for easier adjustment of the amount of contents ejected by pressing the pressing part 84. Furthermore, compared to a configuration where the A hardness of the elastomer forming the pressing part 84 is 80 or higher, the container 10 of the embodiment allows for easier adjustment of the amount of contents ejected by pressing the pressing part 84.

[0186] Furthermore, the container 10 of the embodiment has an elastomer composition X with a thickness of 0.5 mm as measured according to JIS Z 0208, and the moisture permeability is less than 2.0 g / m³. 2 • 24hr configuration. Therefore, the moisture permeability of the container 10 of the embodiment and the 0.5mm thick sample of the elastomer forming the pressing part 84 is 2.0 g / m³. 2 Compared to structures with a lifespan of 24 hours or more, container 10 exhibits improved moisture barrier properties.

[0187] Furthermore, the container 10 of the embodiment has an oxygen permeability coefficient of less than 1.0 × 10⁻⁶, as measured according to JIS K 7126. -15 mol·m / Pa·s·m 2 The composition is such that, therefore, the oxygen permeability coefficient of the container 10 and the elastomer forming the pressing part 84 in the embodiment is 1.0 × 10⁻⁶. -15 mol·m / Pa·s·m 2 Compared to the above configuration, the gas resistance of container 10 is improved.

[0188] As described above, the embodiments of this disclosure have been described in detail, but this disclosure is not limited to the above embodiments. Various modifications, alterations and improvements can be made within the scope of the technical concept of this disclosure.

[0189] For example, the container 10 in the embodiment includes a base 50. However, the container 10 according to this disclosure may also be configured without a base 50 if it has air resistance to the inner container 20 only through the outer container 70 and the lid 40.

[0190] Furthermore, in the embodiment, a pair of openings 74 are provided symmetrically with respect to the central axis of the outer container 70. However, the openings 74 involved in this disclosure are not limited to a pair symmetrically provided with respect to the central axis of the outer container 70. The openings 74 in this disclosure may also be configured to have only one on the outer peripheral wall of the outer container 70, or three. In addition, the multiple openings 74 provided on the outer container 70 in this disclosure may not be symmetrical with respect to the central axis of the outer container 70.

[0191] Furthermore, the container 10 of the embodiment has a configuration in which a pair of pressing parts 84 are connected as one unit by a connecting part 86. However, the pair of pressing parts 84 involved in this disclosure may also be configured not to be connected as one unit.

[0192] Furthermore, the container 10 in this embodiment has a first extension 86a. However, the container 10 of this disclosure may also be configured without the first extension 86a. Additionally, the container 10 of this disclosure may also be configured with the first elastomer portion 82 and the second elastomer portion 90 connected. Furthermore, the container 10 of this disclosure may also be configured without the second elastomer portion 90.

[0193] In addition, the cover 40 of the embodiment is formed with protruding ribs 42c. However, the cover 40 of the present disclosure may not have protruding ribs 42c.

[0194] Furthermore, the outer container 70 according to the embodiment has a configuration where the lid 40 and the base 50 gradually increase in diameter from the end of the lid 40 towards the base 50. However, the outer container 70, lid 40, and base 50 according to this disclosure may not have a configuration of increasing or decreasing diameter, or they may be configured such that the outer diameter of each outer peripheral wall is the same. In addition, the outer container 70, lid 40, and base 50 according to this disclosure may also be configured such that each outer peripheral wall is different and not flush with each other.

[0195] Furthermore, in one embodiment, the recess 84b of the pressing portion 84 is elliptical when viewed radially. However, the recess 84b in this disclosure is not limited to an elliptical shape. The recess 84b in this disclosure can also be circular when viewed radially, or it can also be teardrop-shaped. In addition, the recess 84b in this disclosure can also be polygonal in shape, such as a triangle or a quadrilateral, when viewed radially.

[0196] Furthermore, in one embodiment, a recess 84b is formed on the raised portion 84a of the pressing portion 84, which is recessed relative to the raised portion 84a. However, a protrusion protruding relative to the raised portion 84a may also be formed on the raised portion 84a according to this disclosure. Alternatively, the pressing portion 84 according to this disclosure may not have the recess 84b or the protrusion.

[0197] Furthermore, in the container 10 of the embodiment, the pressing part 84 has a raised part 84a. However, in the container 10 according to this disclosure, the pressing part 84 may not have a raised part 84a.

[0198] Furthermore, in the container 10 of the embodiment, the elastomer portion 80 is substantially flush with the outer peripheral wall of the main body portion 72 of the outer container 70. However, the elastomer portion 80 according to this disclosure may also have a step relative to the outer peripheral wall of the main body portion 72 of the outer container 70.

[0199] Furthermore, in the container 10 of the embodiment, the main body 72 of the outer container 70 is generally cylindrical. However, the outer container 70 involved in this disclosure is not limited to being generally cylindrical as long as it is a cylindrical container, and may also be a cylindrical container that is generally rectangular in radial view.

[0200] Additionally, the container 10 in this embodiment includes a desiccant 60. However, the container 10 disclosed herein may also not include a desiccant 60.

[0201] The entire disclosure of Japanese Patent Application No. 2020-193893, filed on November 20, 2020, is incorporated herein by reference. All documents, patent applications and technical standards described herein are incorporated by reference to the same extent that each individual document, patent application and technical standard is specifically and individually cited and incorporated herein by reference.

Claims

1. A container, comprising: A container having a nozzle section for dispensing the contents; A cylindrical outer container made of rigid resin containing the inner container and having multiple openings formed on its outer peripheral wall; An elastic body portion of an elastic system, the elastic body portion comprising: a plurality of pressing portions disposed on the outer peripheral wall and respectively covering the plurality of openings, and a connecting portion wound around the plurality of pressing portions in the circumferential direction of the outer peripheral wall and integrally connected to the plurality of pressing portions; and A cover that covers the nozzle portion protruding from the outer container and is removable relative to the outer container.

2. The container according to claim 1, wherein, The container further includes a base at the end of the outer container on the side opposite to the lid.

3. The container according to claim 1 or 2, wherein, A pair of openings covered by the pressing part are provided symmetrically with respect to the central axis of the outer container.

4. The container according to claim 2, wherein, The container further has an extension of the elastic structure extending from the connecting portion toward the base of the outer container.

5. The container according to claim 1 or 2, wherein, Multiple protruding ribs are formed on the outer periphery of the cover.

6. The container according to claim 2, wherein, The outer peripheral wall of the outer container gradually widens from the end on the lid side toward the base.

7. The container according to claim 1 or 2, wherein, The contents are an adhesive.

8. The container according to claim 7, wherein, The inner container is made of polyolefin.

9. The container according to claim 8, wherein, The cover is made of polyolefin.

10. The container according to claim 2, wherein, The base has a desiccant inside.

11. The container according to claim 1 or 2, wherein, The pressing part has a raised portion that protrudes from the outer peripheral wall of the outer container and a recess disposed at the center of the raised portion.

12. The container according to claim 11, wherein, The maximum thickness of the raised portion is in the range of 0.2 mm or more and 1.0 mm or less.

13. The container according to claim 1 or 2, wherein, The hardness A of the elastomer is in the range of 40 or higher and lower than 80.

14. The container according to claim 1 or 2, wherein, The moisture permeability of the elastomer in a 0.5 mm thick sample, as measured according to JIS Z 0208, is lower than [specific value missing]. .

15. The container according to claim 1 or 2, wherein, The oxygen permeability coefficient of the elastomer, as measured according to JIS K 7126, is lower than... .

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