WO2022190909A1 - 樹脂容器 - Google Patents
樹脂容器 Download PDFInfo
- Publication number
- WO2022190909A1 WO2022190909A1 PCT/JP2022/007961 JP2022007961W WO2022190909A1 WO 2022190909 A1 WO2022190909 A1 WO 2022190909A1 JP 2022007961 W JP2022007961 W JP 2022007961W WO 2022190909 A1 WO2022190909 A1 WO 2022190909A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin container
- mouth
- top plate
- stirring
- top surface
- Prior art date
Links
- 238000003756 stirring Methods 0.000 claims abstract description 60
- 229920005989 resin Polymers 0.000 claims description 107
- 239000011347 resin Substances 0.000 claims description 107
- 239000000463 material Substances 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 229920005992 thermoplastic resin Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 238000000071 blow moulding Methods 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 description 12
- 238000011049 filling Methods 0.000 description 7
- 238000011109 contamination Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002216 antistatic agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008269 hand cream Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000008268 mayonnaise Substances 0.000 description 1
- 235000010746 mayonnaise Nutrition 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000008256 whipped cream Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/12—Cans, casks, barrels, or drums
- B65D1/14—Cans, casks, barrels, or drums characterised by shape
- B65D1/16—Cans, casks, barrels, or drums characterised by shape of curved cross-section, e.g. cylindrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
-
- 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
- B65D90/00—Component parts, details or accessories for large containers
Definitions
- the present invention relates to resin containers, and more particularly, resin containers for transporting and storing solutions such as suspensions containing substances that tend to separate or settle, such as chemical mechanical polishing (CMP) slurries. It also relates to possible resin containers.
- CMP chemical mechanical polishing
- the abrasive When a solution containing an abrasive such as a chemical mechanical polishing (CMP) slurry is left standing, the abrasive may become less dispersible in the solution and may separate and precipitate. Therefore, when the solution in such a state is used in the polishing process, the abrasive in the solution is uniformly dispersed by a stirrer before being supplied. In addition, when it is necessary to avoid contamination of the solution with contaminants in the air or foreign matter from the outside during stirring and supply, it is necessary to stir and supply the solution in a clean environment (closed state). Garu. It should be noted that the solution is generally supplied after the stirring step is completed.
- CMP chemical mechanical polishing
- a container called a chemical drum whose inside is made of plastic, or a container called a polydrum whose entirety is made of resin is generally used.
- these containers are provided with only two openings, one for filling and one for discharging the contents, and the diameters of these openings are relatively small. Therefore, when stirring and supplying a solution stored in such a container, the solution may be transferred to another container, or a device having various jigs for stirring and supplying in a sealed state may be installed in the container. It becomes necessary to attach it to
- a method of stirring the solution for example, a method of rotating the container in one, two or three dimensions by rolling the container itself over, or a method of rotating a rotating shaft provided with a stirring blade at one end in the solution. (for example, Patent Document 1).
- the method in which the container itself is overturned for agitation has the problem that there is a high possibility that the solution will leak from the container, and that the apparatus configuration for this will increase in size and cost.
- An object of the present invention is to provide a resin container that can stir and supply contents with a simple device configuration.
- the present invention is configured as follows. That is, the resin container according to the first aspect of the present invention is a barrel-shaped resin container integrally formed with a bottom plate, a cylindrical body portion rising from the outer circumference of the bottom plate, and a top plate closing the upper end of the body portion. and
- the top plate has at least three openings penetrating the inside and outside of the resin container,
- the mouth has a first mouth having a minimum diameter and a second mouth having a diameter that is an arbitrary multiple of 1 to 5 times the minimum diameter,
- One of the second mouths is a mouth for stirring contents, It is characterized by
- the resin container has at least three mouths, and one of the second mouths is a mouth for stirring the contents. Stirring of stored items can be performed.
- the resin container can agitate and supply the stored material with a simple device configuration.
- FIG. 1B is a top view of the resin container shown in FIG. 1A;
- FIG. It is a figure which shows the structure regarding stirring and supply of the solution in the resin container shown to FIG. 1A. It is a figure which shows the modification of the bottom plate of the resin container shown to FIG. 1A.
- FIG. 1B is a cross-sectional view showing a modification of the resin container shown in FIG. 1A; It is a figure in other embodiment of the resin container shown to FIG. 1A and FIG. 1B, and is a top view of the said resin container.
- FIG. 5B is a sectional view taken along the line AA in FIG. 5A;
- FIG. 5B is a cross-sectional view taken along the line BB in FIG. 5A;
- Figure 5C is an enlarged view of the mouth shown in Figure 5B;
- the resin container 100 is a barrel-shaped resin container in which a bottom plate 110, a cylindrical body portion 120 rising from the outer periphery of the bottom plate 110, and a top plate 130 closing the upper end of the body portion 120 are integrally formed.
- a resin container 100 is, for example, a container manufactured by blow molding using a thermoplastic resin material such as polyethylene material, and corresponds to a container named, for example, a poly drum or a plastic drum.
- the resin container 100 can have various sizes, and is a container with a storage capacity of 10 liters (L) to 1000 L, usually about 20 L to 200 L. In this embodiment, the 200L one is taken as an example. Further, the shape of the resin container 100 is not limited to the barrel shape of the present embodiment, and may be selected as appropriate, such as a rectangular shape, according to the application.
- a resin container 100 is superior in chemical resistance, corrosion resistance, etc., as compared to a steel container, it can be used as a container for storing chemical solutions, etc. in the field of semiconductors and displays (liquid crystal/organic EL), for example.
- the chemical solution include the above-mentioned CMP (chemical mechanical polishing) slurry, photoresist, developer, etching solution, cleaning solution, etc. in the field of semiconductors, and photoresist in the field of displays (liquid crystal/organic EL). , color resists, color filter materials, and the like.
- a resin container 100 for containing CMP slurry is taken as an example.
- the items stored in the resin container 100 are not limited to the liquids described above, and examples include whipped cream in the form of foam, milk in the form of an emulsion, mayonnaise, hand cream, blood, paint, lime water, cement, and the like. It may be a mixture of an inorganic substance and a liquid, and the like.
- the top plate 130 of the resin container 100 has three or more openings 140 passing through the inside and outside of the resin container 100, and has three openings 141, 142, and 144 in this embodiment.
- These mouths 140 have a first mouth with a minimum diameter and a second mouth with a diameter that is any multiple of one to five times the first mouth.
- two openings 141 and 142 corresponding to the first openings and one opening 144 corresponding to the second opening are provided. Larger than 142 caliber.
- the opening 144 is arranged in the center of the top plate 130, and the openings 141 and 142 are arranged along the diameter direction of the top plate 130.
- the bore diameter is a dimension corresponding to the inner diameter of the through hole passing through the inside and outside of the resin container 100, and corresponds to the root diameter or crest diameter when a female thread is formed.
- each mouth 140 may have a different diameter.
- the diameter of the mouth portion 140 is in the range of ⁇ 20mm- ⁇ 200mm. Therefore, while maintaining the relationship that the second opening has a diameter that is an arbitrary multiple within the range of 1 to 5 times the diameter of the first opening, for example, the first opening has a minimum diameter of ⁇ 20 mm. Each of the two openings can have a maximum diameter of ⁇ 200 mm.
- a parting line (PL) is generated along the linear mating surfaces of a pair of molds used for molding.
- all the openings 140 in the resin container 100 are configured to be positioned and formed on the parting line 105 as shown in FIG. 1B.
- the mold can be simplified, and molding of the resin container 100 having the mouth portion 140 can be facilitated.
- the resin container 100 molded in this manner is line-symmetrical with respect to the parting line 105, including all the mouth portions 140, residual stress during molding is easily reduced, and molding stability is excellent. , for example, the advantage of being excellent in drop strength is also obtained.
- the mouth portion 140 can also be arranged away from the parting line 105 .
- the devices installed in each mouth portion 140 As described below, for example, a stirring device and a discharge device are arranged in the mouth portion 140. Then, it is possible to further improve the stirring efficiency of the contents.
- the resin container 100 of the present embodiment is suitable for transporting and storing solutions such as suspensions containing substances that easily separate or precipitate, such as CMP slurries containing abrasives.
- solutions such as suspensions containing substances that easily separate or precipitate, such as CMP slurries containing abrasives.
- the opening 144 having the largest diameter is used as the opening for stirring the contents.
- a plurality of second openings are provided, one of them is used as an opening for stirring contents.
- the opening for stirring the stored material means, for example, when a rotating shaft provided with a stirring blade at one end is rotated in the solution to stir the solution, the stirring blade moves from the outside to the inside of the resin container 100.
- a mouth portion having, etc. corresponds to this.
- the material of the stirring blades and the like entering into the resin container 100 is selected depending on the relationship with the solution of the contents, and for example, Teflon (registered trademark) is preferable.
- the mouth portion 144 has a diameter that allows the stirring blades to pass through as it is, and as shown in FIG. have.
- the mouth portion 141 is closed, a discharge tube is inserted into the container from the mouth portion 142, and the resin container is stored through the discharge tube.
- dry air or an inert gas (such as nitrogen gas) is introduced into the container through the mouth 141. is injected to pressurize the inside of the container to a pressure of, for example, about 5 to 200 kPa, and the solution is pushed out through a discharge tube inserted through the mouth 142 (at this time, suction by a pump may be used in combination). can be done.
- the bottom plate 110 of the resin container 100 can have at least one of a concave portion 162 and a convex portion 164, as shown in FIG.
- the concave portions 162 and the convex portions 164 may be randomly arranged on the bottom plate 110, or may be arranged, for example, at equal intervals or randomly along the diameter direction of the bottom plate 110, and such an arrangement may be equally spaced in the circumferential direction. Alternatively, they may be arranged randomly.
- the concave portions 162 and the convex portions 164 may be rib-shaped and arranged parallel to or perpendicular to the parting line 105 . Moreover, such arrangements may be randomly combined.
- concave portions 162 and convex portions 164 are provided, when the resin container 100 is used for transporting and storing a solution containing a substance that easily separates or precipitates, when the solution in the contents is stirred, A turbulent flow can be generated, and the stirring efficiency of the solution can be improved.
- the resin container 100 is molded using a thermoplastic resin material such as polyethylene, although it is not particularly limited as long as it is a blow-moldable thermoplastic resin. At this time, it is also possible to form a plurality of layers using different materials, as shown in FIG.
- the innermost layer 170 in contact with the contents can be made of a highly clean material layer.
- This high-cleanliness material layer is a resin material layer in which the resin material component does not elute into the stored items, or the amount of elute is less than that of a general resin material.
- high-density polyethylene resin materials there are grades with as little additives as possible, grades with little metal ion content, and grades with low elution amounts of low-molecular-weight alkanes, etc. is available.
- the resin container 100 of the present embodiment can be used as a container for storing various chemical solutions, etc., and by having the above-described high cleanliness material layer, it is possible to reduce the influence on the stored items. can be done.
- the contents are particularly stirred. There is also an effect that elution can be further suppressed.
- resin containers tend to generate static electricity and become electrified.
- an antistatic agent or the like may be used in the outermost layer of the resin container 100 .
- This antistatic agent is not particularly limited, but a persistent antistatic agent is preferred.
- at least one of a weathering (light) agent and an ultraviolet absorber may be used in the outermost layer. It can also be used for outer layers.
- the resin container 100 has three openings 141, 142, and 144, and the shape of the top plate 130 and the bottom plate 110 is not specified.
- the top plate 130 and the bottom plate 110 have shown configurations that include flat shapes. 5A to 5C (hereinafter sometimes collectively referred to as FIG. 5) and FIG. and explain. 5 and 6, the same reference numerals as in FIG. 1 and the like are used for similar components for easy understanding and omission of explanation.
- FIG. 5A is a diagram corresponding to the top view of the resin container 100 shown in FIG. 1B, and is a diagram showing an example of a more detailed configuration in another embodiment of the resin container 100.
- FIG. 5A is a sectional view of the resin container 100 taken along the line AA
- FIG. 5C is a sectional view of the resin container 100 taken along the line BB shown in FIG. 5A.
- top plate 130 of the resin container 100 will be described with reference to FIGS. 5A and 6.
- the mouth portions 141, 142, and 144 have mouth portion heights h1, h2, and h3 (collectively, “mouth portion height h”). It may be described.) is protruding.
- mouth heights h1 and h2 of mouths 141 and 142 are the same.
- the mouth portion height h3 of the mouth portion 144 which corresponds to the second mouth portion and corresponds to the mouth portion for stirring the contents, is set lower than the mouth portion heights h1 and h2 of the mouth portions 141 and 142. is doing.
- the following effects can be obtained. That is, when the driving portion for rotating the stirring blade is mounted, particularly when mounted along the parting line 105, the driving portion for rotating the stirring blade can be prevented from coming into direct contact with the mouth portion 144. It is possible to facilitate the mounting of the drive unit for rotating the stirring blades. In addition, in a configuration in which the driving portion for rotating the stirring blade is automatically attached to the mouth portion 144 without manual intervention, a configuration in which a sensor detects the mouth portions 141 and 142 and automatically attaches is conceivable.
- setting the mouth portion height h3 of the mouth portion 144 to be lower than the others produces the effect of facilitating the above-described detection and attachment.
- a filling machine may be attached to at least one of the mouth portion 141 and the mouth portion 142 .
- the filling machine may come into contact with the mouth portion 144 during mounting. Therefore, by setting the mouth portion height h3 lower than the mouth portion heights h1 and h2, it is possible to facilitate the mounting of the filling machine, which is advantageous in filling the contents.
- the mouth heights h1-h3 can have different heights.
- each of the mouth portions 141, 142 in the first mouth portion has a threaded portion on at least one of its inner surfaces 141a, 142a and outer surfaces 141b, 142b, preferably on the inner surfaces 141a, 142a.
- Plugs are respectively screwed into these threaded portions in order to seal the openings 141 and 142 and prevent foreign matter from entering and contamination of the contents of the resin container 100 .
- At least one of the portions 141 and 142 is screwed to hermetically seal to prevent contamination and contamination of stored items.
- the mouth 144 of the second mouth has an internal thread 1441 on its inner surface 144a and an external thread or rib 1442 on its outer surface 144b.
- the ribs 1442 may be either concave or convex.
- the female thread 1441 is for screwing a plug in order to seal the mouth portion 144 and prevent contamination and contamination of the contents of the resin container 100. It can also be used to attach parts.
- External threads or ribs 1442 on outer surface 144b are also used to mount and secure the drive for rotating the impeller.
- the top plate 130 has a top surface high portion 131 and a top surface middle portion formed by raising the top plate outer surface 130a with different heights in the outward direction 190a of the resin container 100 in the axial direction 190 of the resin container 100. 132 around mouths 141 , 142 , 144 .
- the top surface high level portion 131 is a region having a flat or substantially flat high level surface 131a that extends with a height H1 that exceeds the mouth height h. .
- the top surface high-level portion 131 is aligned with the parting line 105 extending in the diametrical direction of the top plate 130 where the openings 141, 142, and 144 are arranged. are arranged on both sides in the perpendicular direction, and occupy most of the area of the both sides. Further, the top surface high-level portion 131 has a connecting portion 131b (FIG. 5A, etc.) which is a portion that connects the top surface high-level portion 131 and the top surface middle-level portion 132 and is formed of an inclined surface. Furthermore, as shown in FIG.
- the outer peripheral portion of the resin container 100 is provided with an outer peripheral rib 121 that extends outward 190a from the body portion 120 and corresponds to a chime portion and can also be called an L-ring.
- the height H1 of the top surface high portion 131 is set higher than the height of the outer peripheral rib 121 .
- the height H1 of the top surface high portion 131 is higher than the height h of the mouth portion as described above is necessary when the driving portion for rotating the stirring blade is attached to the mouth portion 144, which is the mouth portion for stirring the contents. In addition, it is possible to prevent the driving portion for rotating the stirring blade from coming into direct contact with the mouth portion 144, so that the mouth portion 144 can be protected.
- 5B and 5C when the resin containers 100 are stacked along the axial direction 190, the top surface high portion 131 of the lower resin container 100 overlaps with the upper resin container.
- a support portion for each resin container 100 can be configured by contacting the bottom plate 110 in 100 . In this respect, it is advantageous for the top surface high portion 131 to occupy a large area in the top plate 130 as described above.
- the top surface intermediate portion 132 has a flat or substantially flat intermediate surface 132a that extends with a height H2 that is less than the mouth height h and exceeds the top surface 130a, as shown in FIG. 5A, and corresponds to the region marked with stitches in FIG. 5A.
- the top surface middle portion 132 is arranged substantially along the periphery of the mouth portions 141, 142, 144 and between the mouth portions 141, 142 and the mouth portion 144, respectively.
- the top surface middle portion 132 has a connecting portion formed of an inclined surface that connects the top surface middle portion 132 and the top plate outer surface 130a.
- the top plate outer surface 130a in this embodiment is formed along the parting line 105 and along the parting line 105 as shown in FIG. 5A. It will extend along the perimeter of each mouth 141 , 142 , 144 . In the axial direction 190, the high surface 131a of the top surface high portion 131 is the highest, followed by the middle surface 132a of the top surface middle portion 132, and then the top plate outer surface 130a.
- the top plate 130 has a top surface groove portion 133 (FIG. 6) located along the outer peripheral portion thereof, and the top surface groove portion 133 is, as shown in FIG. also has a low depth d1. Therefore, in the present embodiment, for example, when the material stored in the resin container 100 is a fluid, when the openings 141, 142, and 144 are used for filling, stirring, and discharging the stored material, the fluid flows out to the top plate outer surface 130a. Then, the fluid flows through the top plate outer surface 130 a and flows into the top surface groove portion 133 .
- the bottom plate 110 has a displacement bottom portion 111 at a bottom plate central portion 100A in the diametrical direction of the bottom plate 110 .
- the displaceable bottom portion 111 is, for example, circular in plan view, and as shown in the figure, normally protrudes toward the inside of the resin container 100 . This is the part that is convexly deformed to the outside.
- the size of the displacement bottom 111 such as its thickness, is designed so that it does not protrude beyond the bottom plate outer surface 110a (FIG. 5B) of the bottom plate 110 other than the displacement bottom 111 even when it is most displaced to the outside.
- the mouth portion 144 for stirring the contents is arranged in the center portion in the diameter direction of the top plate 130 as shown in FIG. They are arranged on both sides in the direction perpendicular to the line 105 .
- FIG. 5B shows a state in which the resin containers 100 having the top plate 130 configured in this way are stacked along the axial direction 190 with the openings 141, 142, and 144 closed with plugs.
- the bottom plate outer surface 110a of the bottom plate 110 other than the displacement bottom portion 111 and the high level surface 131a of the top surface high level portion 131 are in contact with each other to support the overlapping resin containers 100 with each other.
- the opening 144 located corresponding to the displacement bottom 111 will not be as described above.
- the height is lower than that of the top surface high portion 131 , so that it does not come into contact with the displacement bottom portion 111 .
- the resin container 100 has shown a structure having at least three mouths 141 , 142 , 144 .
- the resin container 100 is not limited to this, and the resin container 100 has a total of two mouths, one of the mouths 141 and 142 corresponding to the first mouth and one mouth 144 corresponding to the second mouth.
- both the first opening and the second opening have a circular shape in plan view, but are not limited to a circular shape. In the case of shapes other than circles, the "aperture" can be read as a dimension such as the length of one side or the length of a diagonal line.
- the opening 144 for stirring the stored material is exemplified to be equipped with a driving section for rotating the stirring blade.
- a means capable of stirring the stored material in the resin container 100 can be applied to the opening 144 for stirring the stored material.
- there is a configuration in which stirring is performed without using stirring blades for example, a configuration in which a gas is blown in, or a stored material is sucked and ejected.
- the present invention can be applied to, for example, resin containers used for storing suspensions and the like.
- DESCRIPTION OF SYMBOLS 100 Resin container, 110... Bottom plate, 111... Displacement bottom part, 130... Top plate, 130a... Top plate outer surface, 131... High level part of top surface, 131a... High level surface, 132... Top surface middle part, 132a... Middle surface, 133... Top surface groove part, 140... Mouth, 141, 142... First Mouth, 144... Second Mouth, 162... concave part, 164... convex part, 170... Innermost layer, 190... Axial direction.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
また、上述した従来の容器において攪拌羽根による攪拌を行うことは、口部の数及び大きさの点で難しい。
よって、簡易な装置構成にて、また容器を密閉した状態で、溶液の攪拌及び供給を行うことは、殊の外、困難である。
即ち、本発明の第1態様における樹脂容器は、底板、該底板の外周から立ち上がった円筒状の胴部、及び、該胴部の上端を閉塞する天板が一体成形された樽型の樹脂容器であって、
上記天板は、当該樹脂容器の内外を貫通する口部を少なくとも3つ有し、
上記口部は、最小口径を有する第1口部と、最小口径の1-5倍における任意倍数の口径を有する第2口部とを有し、
第2口部の一つは、収納物攪拌用の口部である、
ことを特徴とする。
図1A及び図1B(まとめて図1と記す場合もある)を参照して、本発明の一実施形態における樹脂容器100の概略構成について説明を行う。樹脂容器100は、底板110、底板110の外周から立ち上がった円筒状の胴部120、及び、胴部120の上端を閉塞する天板130が一体成形された樽型の樹脂容器である。このような樹脂容器100は、例えばポリエチレン材等の熱可塑性樹脂材を用いてブロー成形にて作製される容器であり、例えばポリドラムあるいはプラスチックドラム等の名称が付された容器に相当する。また、樹脂容器100は、様々なサイズを有することができ、収納量で10リットル(L)から1000L、通常、20Lから200L程度の容器である。尚、本実施形態では、200Lのものを例に採る。また、樹脂容器100の形状は、本実施形態の樽形に限定されず、角形等、用途等に応じて適宜選定することができる。
尚、口径とは、樹脂容器100の内外を貫通する貫通穴の内径に相当する寸法であり、雌ねじが形成されている場合には、その谷径又は山径に相当する。
このような凹部162及び凸部164を設けた場合、樹脂容器100が、分離あるいは沈殿しやすい物質を含む溶液の輸送及び保管に使用されるとき、収納物の溶液を攪拌させた際に溶液に乱流を生じさせることができ、溶液の攪拌効率を向上させることができる。
また、本実施形態の樹脂容器100では、上述したように、特に収納物の攪拌が行われることから、最内側層170を高清浄度材層とすることで、収納物への樹脂材料成分の溶出をより抑制することができるという効果もある。
さらにまた、樹脂容器100の劣化防止のために、最外層に耐候(光)剤及び紫外線吸収剤の少なくとも一方を使用してもよく、収納物の紫外線防護のために遮光剤(材)を最外層に使用することもできる。
上述の第1実施形態では、樹脂容器100は、3つの口部141,142,144を有する構成を示し、また、その天板130及び底板110についても特に形状を特定せず、例えば図1Aに示すように、天板130及び底板110は、平坦な形状も含む構成を示した。
以下では、図1等を参照して説明した樹脂容器100の他の実施形態における構成について、図5A-図5C(以下、総称して図5と記す場合もある。)、及び図6を参照して、説明を行う。尚、図5及び図6では、理解の容易化及び説明の省略化のため、類似構成部分には、図1等と同じ符号を記している。
ここで、図5Aは、図1Bに示す樹脂容器100の上面図に対応した図で、樹脂容器100の他の実施形態におけるより詳細な構成の一例を示した図であり、図5Bは、図5Aに示すA-A部における樹脂容器100の断面図であり、図5Cは、図5Aに示すB-B部における樹脂容器100の断面である。
3つの口部141,142,144を立設している天板130について、樹脂容器100の軸方向190において、樹脂容器100の外側向き190aにおける天板130の上面を天板外面130aとする。この天板外面130aを外側向き190aにおける高さの基準面として、口部141,142、144は、それぞれ、口部高さh1、h2、h3(総称して、「口部高さh」と記す場合もある。)にて突設されている。本実施形態では、口部141,142におけるそれぞれの口部高さh1、h2は、同一である。一方、第2口部に相当し、また、収納物攪拌用の口部に相当する口部144の口部高さh3は、口部141,142の口部高さh1、h2よりも低く設定している。
即ち、攪拌羽根回転用駆動部を装着するとき、特に、パーティングライン105に沿って装着する場合に、攪拌羽根回転用駆動部が口部144に直接当接するのを回避できることから、口部144への攪拌羽根回転用駆動部の装着を容易にすることができる。また、攪拌羽根回転用駆動部が人手を介さず自動的に口部144へ装着される形態では、口部141、142をセンサが検知して自動装着を行う構成が考えられる。このような構成において、口部144の口部高さh3を他より低く設定しておくことで、上述の検知及び装着が容易にできるという効果を生じる。
さらにまた、樹脂容器100内への収納物充填の際には、口部141及び口部142の少なくとも一方に充填機を装着する場合がある。このとき、口部144の口部高さh3が口部141、142の口部高さh1、h2よりも大きいと、装着時に充填機が口部144に当接することも想定される。よって、口部高さh1、h2よりも口部高さh3を低く設定することで、充填機の装着を容易にすることができ、収納物の充填においても利点がある。
ここで、天面高位部131は、図6に示すように、上述の口部高さhを超える高さH1を有して延在する、平坦又はほぼ平坦な高位面131aを有する領域である。また本実施形態では、天面高位部131は、図5Aに示すように、口部141,142,144が配列されている、天板130の直径方向に延在する、パーティングライン105に対して直角方向における両側部分に配置されて、該両側部分における大部分の面積を占めている。また、天面高位部131は、天面高位部131と天面中位部132とを連結する部分で傾斜面にて構成される連結部131b(図5A等)を有する。
さらに、図6に示すように、樹脂容器100の外周部には、胴部120を外側向き190aに延在させた、チャイム部に相当しLリングとも称され得る、外周リブ121が設けられているが、天面高位部131の高さH1は、外周リブ121の高さよりも高く設定している。
また、詳細後述するが、図5B及び図5Cに示すように、軸方向190に沿って樹脂容器100を積み重ねる場合には、下側の樹脂容器100における天面高位部131は、上側の樹脂容器100における底板110と接触して各樹脂容器100の支持部を構成することができる。この点で、上述したように天板130において天面高位部131が大きな面積を占めることは、有利となる。
底板110は、底板110の直径方向における底板中央部100Aに変位底部111を有する。該変位底部111は、平面視において例えば円形であり、図示するように通常、樹脂容器100の内側へ凸となり、樹脂容器110内における収納物の重量に応じて、軸方向190において樹脂容器110の外側へ凸に変形する部分である。ここで変位底部111は、外側へ最も変位したときでも、底板110における変位底部111以外の底板外面110a(図5B)を超えて凸とならないように、その厚み等のサイズが設計されている。
このような変位底部111を有することで、口部144に攪拌羽根回転用駆動部を装着して収納物の攪拌が行われる際には、変位底部111は、収納物に乱流を生じさせ、攪拌効率を向上させることができる。
このように重なり合った状態において、底板110の変位底部111が樹脂容器110の外側へ凸に変形している場合であっても、変位底部111に対応して位置する口部144は、既に説明したように、天面高位部131よりも低い高さを有することから、変位底部111と接触することはない。
また、上述の説明では、第1口部及び第2口部は共に、平面視で円形形状であるが、円形形状に限定されない。円形以外の形状の場合、「口径」は、例えば、その一辺の長さ、あるいは対角線長さ、等の寸法に読み替えることができる。
又、2021年3月9日に出願された、日本国特許出願No.特願2021-037290号の明細書、図面、特許請求の範囲、及び要約書の開示内容の全ては、参考として本明細書中に編入されるものである。
130…天板、130a…天板外面、131…天面高位部、131a…高位面、
132…天面中位部、132a…中位面、133…天面溝部、
140…口部、141、142…第1口部、144…第2口部、
162…凹部、164…凸部、
170…最内側層、190…軸方向。
Claims (10)
- 底板(110)、該底板の外周から立ち上がった円筒状の胴部(120)、及び、該胴部の上端を閉塞する天板(130)が一体成形された樽型の樹脂容器(100)であって、
上記天板は、当該樹脂容器の内外を貫通する口部(140)を少なくとも3つ有し、
上記口部は、最小口径を有する第1口部(141、142)と、最小口径の1-5倍における任意倍数の口径を有する第2口部(144)とを有し、
第2口部の一つは、収納物攪拌用の口部である、
ことを特徴とする樹脂容器。 - 当該樹脂容器は、熱可塑性樹脂材を用いてブロー成形にて製造され、全ての上記口部は、製造にて生じるパーティングライン上に位置する、請求項1に記載の樹脂容器。
- 上記底板は、収納物の攪拌効率を向上させる凹部(162)又は凸部(164)を底板内面(110b)に有する、請求項1又は2に記載の樹脂容器。
- 上記第2口部(144)における上記収納物攪拌用の口部は、その内面(144a)に雌ねじ(1441)を有し、かつ、その外面(144b)には、雄ねじ又はリブ(1442)を有する、請求項1から3のいずれかに記載の樹脂容器。
- 当該樹脂容器(100)の軸方向(190)において、上記口部(141,142、144)は、上記天板の天板外面(130a)から当該樹脂容器の外側向き(190a)へ口部高さ(h)にて突設されており、
上記天板は、上記天板外面から上記外側向きにおいてそれぞれ高さが異なる、天面高位部(131:天面A部)及び天面中位部(132:天面底部)を上記口部の周辺に有し、ここで、天面高位部は、上記口部高さを超える高さ(H1)にて延在する高位面(131a)を有し、天面中位部は、上記口部高さよりも低く上記天板外面を超える高さ(H2)にて延在する中位面(132a)を有する、請求項1から4のいずれかに記載の樹脂容器。 - 上記第2口部における収納物攪拌用の口部高さ(h3)は、上記第1口部の口部高さ(h1、h2)よりも低い、請求項5に記載の樹脂容器。
- 上記天板は、天板の外周部に沿って配置される天面溝部(133)を有し、該天面溝部は、上記軸方向において上記天板外面よりも低い深さ(d1)を有する、請求項5又は6に記載の樹脂容器。
- 上記底板は、底板中央部(100A)に変位底部(111)を有し、該変位底部は、通常、当該樹脂容器の内側へ凸であり、当該樹脂容器内の収納物重量に応じて当該樹脂容器の外側へ凸に変形する部分である、請求項5から7のいずれかに記載の樹脂容器。
- 上記収納物攪拌用の口部は、上記天板の中央部に配置され、上記天面高位部は、収納物攪拌用の口部を通る直径方向に対する直角方向における両側に配置され、当該樹脂容器の軸方向に2つの樹脂容器を積み重ねた状態において、上記底板における上記変位底部以外の底板外面(110a)と、上記天面高位部の上記高位面とは、接触して互いを支持する、請求項8に記載の樹脂容器。
- 当該樹脂容器は、ポリエチレン材で複数層にて作製され、収納物に接する最内側層(170)は、高清浄度材層である、請求項1から9のいずれかに記載の樹脂容器。
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JP2003504277A (ja) * | 1997-12-02 | 2003-02-04 | フルオロウェア・インコーポレーテッド | ブロー成形されたドラム |
JP2007282629A (ja) * | 2006-03-23 | 2007-11-01 | Fujimori Kogyo Co Ltd | 培養袋及び培養器 |
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