CN116997511A

CN116997511A - Resin container

Info

Publication number: CN116997511A
Application number: CN202280019987.4A
Authority: CN
Inventors: 金井繁; 森本信行; 松尾善雄; 田所淳人
Original assignee: Sekisui Seikei Ltd
Current assignee: Sekisui Seikei Ltd
Priority date: 2021-03-09
Filing date: 2022-02-25
Publication date: 2023-11-03
Also published as: TW202243812A; KR20230138523A; WO2022190909A1; JPWO2022190909A1

Abstract

Provided is a resin container which can stir and supply a storage object with a simple device structure. A barrel-type resin container (100) in which a bottom plate (110), a trunk portion (120), and a top plate (130) are integrally molded is characterized in that the top plate has at least three openings (140) each having: a first mouth portion (141, 142) having a minimum caliber; and a second mouth (144) having an aperture of any multiple of one to five times the minimum aperture, one of the second mouths being a mouth for stirring the contents.

Description

Resin container

Technical Field

The present invention relates to a resin container, and more particularly, to a resin container for transporting and storing a solution such as a suspension containing a substance which is easily separated or precipitated, for example, a Chemical Mechanical Polishing (CMP) slurry, and the like, and further for stirring the solution.

Background

When a solution containing an abrasive such as a Chemical Mechanical Polishing (CMP) slurry is left to stand, dispersibility of the abrasive in the solution is lowered, and separation and precipitation may occur. Therefore, when the solution in such a state is used in the polishing step, the polishing agent in the solution is uniformly dispersed and supplied by the agitator. In addition, when it is necessary to avoid contamination of the atmosphere or foreign matter from outside into the solution during stirring and supplying, it is necessary to stir and supply the solution in a clean environment (in a sealed state). The solution is generally supplied after the stirring step is completed.

For storing such a solution, a container having a plastic container inside, for example, a chemical tank, or a container made of resin as a whole, for example, a polymer tank, is generally used. However, in these containers, one port for filling and one port for discharging the storage material are provided, and only two ports are provided in total, and the diameters of these ports are relatively small. Therefore, in the case of stirring and supplying a solution stored in such a container, it is necessary to transfer the solution to another container or to attach a device for stirring and supplying in a closed state, which has various jigs, to the container.

On the other hand, as a method of stirring a solution, there are, for example, a method of rotating a container in one, two or three dimensions by tumbling the container itself, a method of rotating a rotary shaft provided with stirring blades at one end thereof in a solution, and the like (for example, patent document 1).

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open publication No. 2003-11060

Technical problem to be solved by the invention

However, the method of stirring the container by tumbling the container itself has a problem that there is a high possibility of leakage of the solution from the container, and the like, and therefore, the device structure is enlarged, and the cost is increased.

In addition, in the above-described conventional container, stirring by the stirring blade is difficult in terms of the number and size of the mouths.

Therefore, it is extremely difficult to stir and supply the solution in a state where the container is closed with a simple apparatus structure.

Disclosure of Invention

The invention aims to provide a resin container capable of stirring and supplying a storage object in a resin container by a simple device structure.

Technical means for solving the technical problems

In order to achieve the above object, 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 in which a bottom plate, a cylindrical trunk portion erected from the outer periphery of the bottom plate, and a top plate closing the upper end of the trunk portion are integrally molded,

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 caliber; and a second mouth portion having an aperture of any multiple of one to five times the minimum aperture,

one of the second openings is an opening for stirring the stored material.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the first aspect of the present invention, since the resin container has at least three openings, one of the second openings is an opening for stirring the stored material, the stored material can be stirred through the second opening. Further, since the stored material can be filled and discharged through the first port, the resin container can be configured to stir and supply the stored material with a simple device.

Drawings

Fig. 1A is a side view showing a schematic structure of a resin container according to an embodiment of the present invention.

Fig. 1B is a top view of the resin container shown in fig. 1A.

Fig. 2 is a diagram showing a structure related to stirring and supply of a solution in the resin container shown in fig. 1A.

Fig. 3 is a diagram showing a modified example of the bottom plate of the resin container shown in fig. 1A.

Fig. 4 is a cross-sectional view showing a modification of the resin container shown in fig. 1A.

Fig. 5A is a view of another embodiment of the resin container shown in fig. 1A and 1B, and is a top view of the resin container.

Fig. 5B is a cross-sectional view A-A in fig. 5A.

Fig. 5C is a cross-sectional view B-B in fig. 5A.

Fig. 6 is an enlarged view of the mouthpiece shown in fig. 5B.

Detailed Description

Hereinafter, a resin container according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or similar components are denoted by the same reference numerals. In order to avoid unnecessary redundancy of the following description, it is convenient for a person skilled in the art to understand that detailed description of known matters and repeated description of substantially the same structure are omitted. The following description and drawings are not intended to limit the subject matter recited in the scope of the patent claims. Each of the drawings is a conceptual diagram for assisting the explanation, and is not a diagram accurately showing an actual form.

(first embodiment)

The outline structure of the resin container 100 according to an embodiment of the present invention will be described with reference to fig. 1A and 1B (also referred to as fig. 1). The resin container 100 is a barrel-shaped resin container in which a bottom plate 110, a cylindrical body portion 120 standing 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. Such a resin container 100 is a container produced by blow molding using a thermoplastic resin material such as a polyethylene material, and corresponds to a container given a name such as a polymer tube or a plastic tube. The resin container 100 can have various dimensions, and has a storage volume of 10 liters (L) to 1000 liters, and generally about 20L to 200L. In the present embodiment, an example of 20L is used. The shape of the resin container 100 is not limited to the barrel shape of the present embodiment, and may be square, or the like, and may be appropriately selected according to the application or the like.

Such a resin container 100 is excellent in drug resistance, corrosion resistance, and the like as compared with a steel container, and therefore, can be used as a container for storing a drug solution or the like in the semiconductor field and the display field (liquid crystal/organic EL). Examples of the chemical solutions include CMP (chemical mechanical polishing) slurry, photoresist, developer, etching solution, cleaning solution, and the like, which are mentioned above, in the semiconductor field, and photoresist, color resist, color filter material, and the like, in the display field (liquid crystal/organic EL). In the present embodiment, a resin container 100 storing CMP slurry is taken as an example. The storage material of the resin container 100 is not limited to the liquid described above, and may be, for example, foam lip balm, emulsion milk, mayonnaise, hand cream, blood, paint, or a mixture of inorganic substances such as lime water and cement and liquid.

The top plate 130 of the resin container 100 has three or more openings 140 penetrating the inside and outside of the resin container 100, and in the present embodiment, three openings 141, 142, 144 are provided. These mouths 140 include: a first mouth having a minimum caliber and a second mouth having a caliber of any multiple of one to five times the first mouth. In the present embodiment, two openings 141 and 142 corresponding to the first opening and one opening 144 corresponding to the second opening are provided, and the aperture of the opening 144 is larger than the apertures of the openings 141 and 142. In the present embodiment, as shown in fig. 1B, 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 diameter corresponds to the inner diameter of a through hole penetrating the inside and outside of the resin container 100, and when a female thread is formed, corresponds to the root diameter or thread diameter.

In addition, when the aperture of the second mouth portion is twice that of the first mouth portion, all the mouth portions 140 have the same aperture. On the other hand, the respective openings 140 may have different diameters.

The aperture of the mouth 140 is in the range of 20mm to 200 mm. Therefore, in the above-described state in which the second mouth portion has a diameter of any multiple of the range of one to five times that of the first mouth portion, for example, the first mouth portion can have a diameter of minimum Φ20mm, and the second mouth portion can have a diameter of maximum Φ200mm.

Further, since the resin container 100 is manufactured by blow molding as described above, a Parting Line (Parting Line) is generated along the linear mating surfaces of the pair of molds used for molding. In the present embodiment, as shown in fig. 1B, all of the mouth portions 140 of the resin container 100 are configured to be located and formed on the parting line 105. With this configuration, the mold can be simplified, and the resin container 100 having the mouth 140 can be easily molded. Further, since the resin container 100 thus molded includes all the openings 140 and is line-symmetrical with respect to the parting line 105, there are advantages that residual stress during molding can be easily reduced, molding stability is excellent, and drop strength is also excellent, for example.

On the other hand, the mouth 140 may be arranged so as to be offset from the parting line 105. With such a configuration, the degree of freedom in arrangement of the devices provided in the respective openings 140 can be improved, and as will be described below, in the case where the stirring device and the discharging device are arranged in the openings 140, for example, the stirring efficiency of the stored material can be further improved.

The resin container 100 according to the present embodiment is suitable for the above-described resin container for transporting and storing a solution such as a suspension containing a substance that is easily separated or precipitated, such as a CMP slurry containing an abrasive. That is, the mouth 144 having the largest diameter among the three mouths 141, 142, 144 is used as the mouth for stirring the stored material. In the case where a plurality of second openings are provided, one of the openings is used as an opening for stirring the stored material.

Here, the mouth for stirring the storage corresponds to, for example, a mouth having a shape in which the stirring blade is kept as it is from the outside to the inside of the resin container 100, that is, a mouth having a diameter such that the stirring blade or the like can pass through the mouth 140 without being folded, or a mouth having a mounting portion to which a stirring device for stirring the solution can be mounted, when the rotation shaft having the stirring blade provided at one end rotates in the solution to stir the solution. The material of the stirring blade or the like that enters the resin container 100 is selected according to the correlation with the solution of the storage material, and for example, teflon (registered trademark) or the like is preferable.

In the present embodiment, the opening 144 has a diameter of an extent that the stirring blade can pass through directly, and as shown in fig. 2, a driving portion for rotating the stirring blade is attached to the opening 144.

As a method of discharging the solution from the resin container 100, for example, after the stirring process of the solution is completed, the mouth 141 is closed, a discharge pipe is inserted into the container from the mouth 142, and the solution contained in the container is pumped by a pump through the discharge pipe (the container is ventilated through the mouth 142), or, as shown in fig. 2, dry air or an inert gas (for example, nitrogen gas or the like) is injected into the container through the mouth 141, the container is pressurized to a pressure of about 5 to 200kPa, for example, and the solution is pressed out through the discharge pipe inserted into the mouth 142 (in this case, pumping by a pump may be used).

By adopting the structure shown in fig. 2, according to the resin container 100 of the present embodiment, the agitation and supply of the stored material can be performed in a state of a closed container with a simple apparatus structure.

As shown in an example in fig. 3, the bottom plate 110 of the resin container 100 may have at least one of a concave portion 162 and a convex portion 164. The concave portions 162 and the convex portions 164 may be arranged at random on the bottom plate 110, for example, at equal intervals or at random along the diameter direction of the bottom plate 110, and may be arranged at equal intervals or at random along the circumferential direction. The concave portions 162 and the convex portions 164 may be formed in a rib shape and may be arranged parallel to or perpendicular to the parting line 105. Further, such configurations may also be randomly combined.

When such 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 is easily separated or precipitated, turbulence can be generated in the solution when stirring the solution of the stored object, and the stirring efficiency of the solution can be improved.

As described above, the resin container 100 is not particularly limited as long as it is a thermoplastic resin that can be blow molded, and is molded using a thermoplastic resin material such as a polyethylene material. In this case, materials of different materials may be used, and as shown in fig. 4, the material may be formed to have a plurality of layers.

Further, in the case of forming the resin container 100 in multiple layers, the innermost layer 170 in contact with the storage object can be used as a high-cleanliness material layer. The high-cleanliness material layer is a resin material layer in which the resin material component does not dissolve out into the storage material or in which the amount of dissolution out of the resin material is reduced compared with that of a general resin material. As an example thereof, a material having a level as low as possible in the content of additives or the like, a material having a level as low in the content of metal ions, or a material having a level as low in the elution amount of low molecular weight alkanes or the like can be used for the high-density polyethylene resin material.

As described above, the resin container 100 according to the present embodiment can be used as a container for containing various chemical solutions and the like, and by having the high-cleanliness material layer described above, the influence on the contained material and the like can be reduced.

In addition, in the resin container 100 according to the present embodiment, since the container is particularly stirred as described above, the innermost layer 170 is a high-cleanliness material layer, and thus, there is an effect that elution of the resin material component into the container can be further suppressed.

In addition, in general, a resin container is easily charged by static electricity. In the resin container 100 of the present embodiment, since the stirring device and the discharging device are handled as described above, there is a concern that the static electricity generated during this process may cause dust or dirt adhering to the outside of the container to contaminate the container. Therefore, an antistatic agent or the like may be used in the outermost layer of the resin container 100. Although the antistatic agent is not particularly limited, a sustained antistatic agent is preferable.

In order to prevent deterioration of the resin container 100, at least one of a weather (light) resistant agent and an ultraviolet absorber may be used in the outermost layer, and a light shielding agent (material) may be used in the outermost layer for ultraviolet protection of the stored article.

In the above description, the modification and the additional structure described above may be applied to the resin container 100 alone or in appropriate combination with respect to the basic structure having three or more openings 140 in the top plate 130 of the resin container 100.

(second embodiment)

In the first embodiment described above, the resin container 100 has a structure having three openings 141, 142, 144, and the shapes of the top plate 130 and the bottom plate 110 are not particularly defined, but the top plate 130 and the bottom plate 110 are also shown to include a flat shape, for example, as shown in fig. 1A.

Hereinafter, the structure of the resin container 100 according to another embodiment described with reference to fig. 1 and the like will be described with reference to fig. 5A to 5C (hereinafter, also collectively referred to as "fig. 5") and fig. 6. In fig. 5 and 6, the same reference numerals as those in fig. 1 and the like are given to similar components for easy understanding and description thereof is omitted.

Here, 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 structure in other embodiments of the resin container 100, fig. 5B is a cross-sectional view of the resin container 100 in the A-A portion shown in fig. 5A, and fig. 5C is a cross-sectional view of the resin container 100 in the B-B portion shown in fig. 5A.

Referring to fig. 5A and 6, the top plate 130 of the resin container 100 will be described.

In the top plate 130 in which the three openings 141, 142, 144 are provided upright, the top surface of the top plate 130 in the outer direction 190a of the resin container 100 is defined as the top plate outer surface 130a in the axial direction 190 of the resin container 100. The top plate outer surface 130a is set as a reference surface for the height in the outer direction 190a, and the mouths 141, 142, and 144 are provided so as to protrude by mouths heights h1, h2, and h3 (which may be collectively referred to as "mouths height h"). In the present embodiment, the mouth heights h1 and h2 of the mouths 141 and 142 are the same as each other. On the other hand, the mouth height h3 corresponding to the second mouth and corresponding to the mouth 144 for stirring the stored material is set to be lower than the mouth heights h1 and h2 of the mouths 141 and 142.

In this way, by setting the mouth height h3 of the mouth 144 for stirring the storage to be lower than the other mouths 141 and 142, the following effects can be obtained.

That is, when the stirring blade rotation driving portion is mounted, particularly, when the stirring blade rotation driving portion is mounted along the parting line 105, the stirring blade rotation driving portion can be prevented from directly contacting the mouth 144, and thus the stirring blade rotation driving portion can be easily mounted to the mouth 144. In addition, in a mode in which the stirring blade rotation driving portion is automatically attached to the mouth portion 144 without a human hand, a configuration in which the mouth portions 141 and 142 are detected by sensors and automatically attached is considered. In such a configuration, the mouth height h3 of the mouth 144 is set lower than that of the other mouths, thereby providing an effect that the above-described detection and attachment can be easily performed.

In addition, when filling the resin container 100 with the storage material, a filling machine may be attached to at least one of the mouth 141 and the mouth 142. At this time, if the mouth height h3 of the mouth 144 is larger than the mouth heights h1, h2 of the mouths 141, 142, it is also conceivable that the filling machine is in contact with the mouth 144 at the time of mounting. Therefore, setting the mouth height h3 to be lower than the mouth heights h1 and h2 allows the filling machine to be easily mounted, and is advantageous for filling the storage material.

Further, the mouth heights h1 to h3 may have different heights, as long as the mouth height h3 of the mouth 144 for stirring the stored material is the smallest.

Further, the mouths 141, 142 of the first mouths preferably have screw thread-shaped portions on at least one of the inner surfaces 141a, 142a and the outer surfaces 141b, 142b, respectively. In order to realize the sealing of the openings 141 and 142 and prevent foreign matter from being mixed into or contaminating the storage material of the resin container 100, plugs are screwed into the respective screw-shaped portions. In addition, when the stored material in the resin container 100 is discharged, after the plug is removed, as shown in fig. 2, a pressurized gas pipe and a jig for the discharge pipe are provided to be screwed into at least one of the mouths 141, 142 of the first mouth, thereby sealing the container and preventing foreign matter from being mixed into and contaminated with the stored material.

On the other hand, the mouth 144 of the second mouth has internal threads 1441 on its inner surface 144a and external threads or ribs 1442 on its outer surface 144 b. The ribs 1442 may have any shape including concave or convex. Here, the female screw 114 is configured to screw the plug in order to prevent foreign matter from being mixed into or contaminated with the storage material of the resin container 100 by the sealing port 144, and may be used to install a driving portion for rotating the stirring blade. The external thread or rib 1442 in the outer surface 144b is a structure for attaching and fixing a driving portion for rotation of the stirring blade.

Further, the top plate 130 has, around the openings 141, 142, 144, a top surface elevated portion 131 and a top surface median portion 132 formed by respectively having different heights in the outer side direction 190a of the resin container 100 in the axial direction 190 of the resin container 100 and swelling the top plate outer surface 130a.

Here, as shown in fig. 6, the top surface elevated portion 131 is a region having a flat or substantially flat elevated surface 131a extending over the height H1 of the mouth height H. In the present embodiment, as shown in fig. 5A, the top surface elevated portion 131 is disposed at both side portions of the top plate 130 extending in the diameter direction of the top plate 130 in the right angle direction with respect to the parting line 105, and occupies a large area of the both side portions. The top surface elevated portion 131 includes a connecting portion 131b formed by an inclined surface at a portion connecting the top surface elevated portion 131 and the top surface intermediate portion 132 (fig. 5A, etc.).

Further, as shown in fig. 6, an outer peripheral rib 121 is provided on the outer peripheral portion of the resin container 100, and the outer peripheral rib 121 corresponds to a bell portion (i.e., a solar cell portion) extending the trunk portion 120 in the outward direction 190a, and may be referred to as an L-shaped ring, but the height H1 of the top surface elevated portion 131 is set to be higher than the height of the outer peripheral rib 121.

The height H1 of the top surface elevated portion 131 exceeding the mouth height H has an effect that, when the stirring blade rotation driving portion is attached to the mouth 144, which is the mouth for stirring the storage, the stirring blade rotation driving portion can be prevented from directly abutting the mouth 144, and the mouth 144 can be protected.

In addition, as shown in fig. 5B and 5C, when the resin containers 100 are stacked in the axial direction 190, the top surface elevated portion 131 of the lower resin container 100 can be brought into contact with the bottom plate 110 of the upper resin container 100 to constitute a support portion of each resin container 100, although this will be described in detail below. In this regard, as described above, the upper surface elevated portion 131 advantageously occupies a large area on the top plate 130.

As shown in fig. 6, the top median 132 is a region having a flat or substantially flat median surface 132a, and the median surface 132a extends at a height H2 lower than the mouth height H and exceeding the top plate outer surface 130a, and corresponds to a region marked with a mesh in fig. 5A. As shown in fig. 5A, the top-surface median portion 132 is disposed between the mouth portions 141, 142 and 144 along substantially the periphery of the mouth portions 141, 142 and 144. The top middle portion 132 has a connecting portion formed by an inclined surface at a portion connecting the top middle portion 132 and the top outer surface 130a.

By disposing the top surface elevated portion 131 and the top surface intermediate portion 132 as described above, the top surface 130a extends along the parting line 105 and along the periphery of each of the openings 141, 142, 144 in the present embodiment as shown in fig. 5A. In the axial direction 190, the upper surface 131a of the upper surface upper portion 131 is highest, and then the middle surface 132a of the upper surface middle portion 132 is next, and then the top surface 130a is next in order.

Further, the top plate 130 has a top surface groove 133 (fig. 6) located along an outer peripheral portion thereof, and as shown in fig. 6, the top surface groove 133 has a depth d1 lower than the top plate outer surface 130a in the axial direction 190. Therefore, in the present embodiment, for example, when the storage object of the resin container 100 is fluid, when the openings 141, 142, 144 are used for filling, stirring, and discharging the storage object, the fluid flowing out to the top plate outer surface 130a flows through the top plate outer surface 130a and flows into the top surface groove 133.

Next, the base plate 110 will be described in detail with reference to fig. 5B and 5C.

The bottom plate 110 has a displacement bottom 111 at a bottom center portion 100A in a diameter direction of the bottom plate 110. The displacement bottom 111 is, for example, circular in plan view, and as shown in the drawing, is a portion that protrudes toward the inside of the resin container 100 in general, and deforms to protrude toward the outside of the resin container 110 in the axial direction 190 according to the weight of the storage material in the resin container 110. Here, the displacement bottom 111 is designed such that the thickness and other dimensions thereof do not protrude beyond the bottom outer surface 110a (fig. 5B) of the bottom plate 110 excluding the displacement bottom 111 even when the displacement bottom is displaced to the outermost side.

By providing such a displacement bottom 111, when the stirring blade rotation driving unit is attached to the mouth 144 and stirring of the stored material is performed, the displacement bottom 111 can generate turbulence in the stored material, and the stirring efficiency can be improved.

As described above, as shown in fig. 5A, the mouth 144 for stirring the stored material is disposed at the center in the diameter direction of the top plate 130, and the top surface elevated portions 131 are disposed at both sides in the direction perpendicular to the parting line 105 passing through the mouth 144. In the resin container 100 having the top plate 130 having such a structure, in a state where the respective openings 141, 142, 144 are closed by the plugs, and in a state where the resin containers 100 are stacked in the axial direction 190, as shown in fig. 5B, the bottom plate outer surface 110a of the bottom plate 110 excluding the displacement bottom 111 is in contact with the high-level surface 131a of the top surface high-level portion 131, and the overlapped resin containers 100 are mutually supported.

In the state of being stacked in this way, even when the displacement bottom 111 of the bottom plate 110 is deformed so as to protrude outward of the resin container 110, the mouth 144 positioned in correspondence with the displacement bottom 111 has a lower height than the top surface elevated portion 131 as already described, and therefore does not come into contact with the displacement bottom 111.

The above-described embodiments may be combined, or the components shown in the different embodiments may be combined. Further, by appropriately combining the embodiments, the effects of the embodiments can be achieved.

In the above description, the resin container 100 has at least three ports 141, 142, 144. However, the resin container 100 is not limited to this, and may have a total of two openings, that is, one of the openings 141 and 142 corresponding to the first opening and one opening 144 corresponding to the second opening.

In the above description, the first opening and the second opening are both circular in plan view, but are not limited to circular. In the case of a shape other than a circle, the "caliber" may be replaced with a dimension such as a length of one side or a diagonal length.

In the above description, the stirring blade rotation driving section is attached to the container stirring port 144. Of course, the present invention is not limited to this, and a unit capable of stirring the objects contained in the resin container 100 may be applied to the container stirring mouth 144. Examples of such a unit include a structure in which stirring is performed without using a stirring blade, for example, a structure in which air is blown in, or a structure in which a stored material is sucked in and discharged out.

While the present invention has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art. It should be understood that such variations and modifications are included therein without departing from the scope of the invention as defined in accordance with the scope of the appended claims.

Further, the disclosure of the specification, drawings, and scope of patent requests of Japanese patent application No. 2021-037290, which was filed on 3/9/2021, is incorporated herein by reference in its entirety.

Industrial applicability

The present invention can be applied to, for example, a resin container for storing a suspension or the like.

Symbol description

100 … resin container, 110 … bottom plate, 111 … displacement bottom,

130 … top plate, 130a … top plate outer surface, 131 … top surface high position portion, 131a … high position surface,

132 …,132a …,133 …,

140 … mouths, 141, 142 … first mouths, 144 … second mouths,

162 …,164 …,

170 … innermost layer, 190 … axial.

Claims

1. A resin container (100) comprising a bottom plate (110), a cylindrical trunk (120) rising from the outer periphery of the bottom plate, and a top plate (130) closing the upper end of the trunk, wherein the resin container is integrally molded,

the top plate has at least three openings (140) penetrating the inside and outside of the resin container,

the mouth has: a first mouth portion (141, 142) having a minimum caliber; and a second mouth (144) having an aperture of any multiple of one to five times the minimum aperture,

one of the second openings is an opening for stirring the stored material.

2. The resin container according to claim 1, wherein,

the resin container is manufactured by blow molding using a thermoplastic resin material, and all of the mouths are located on parting lines produced by the manufacturing.

3. The resin container according to claim 1 or 2, wherein,

the bottom plate has a concave part (162) or a convex part (164) on the inner surface (110 b) of the bottom plate to improve the stirring efficiency of the storage object.

4. A resin container according to any one of claim 1 to 3, wherein,

the container stirring mouth of the second mouth (144) has an internal thread (1441) on its inner surface (144 a) and an external thread or rib (1442) on its outer surface (144 b).

5. The resin container according to any one of claim 1 to 4, wherein,

in the axial direction (190) of the resin container (100), the mouth parts (141, 142, 144) are arranged to protrude from the top plate outer surface (130 a) of the top plate to the outer side direction (190 a) of the resin container by a mouth part height (h),

the top plate has a top surface elevated portion (131: top surface A portion) and a top surface median portion (132: top surface bottom portion) at the periphery of the mouth portion, the heights of the top surface elevated portion and the top surface median portion from the top plate outer surface in the outer direction being different from each other, wherein the top surface elevated portion has an elevated surface (131 a) extending at a height (H1) exceeding the mouth portion height, and the top surface median portion has a median surface (132 a) extending at a height (H2) lower than the mouth portion height and exceeding the top plate outer surface.

6. The resin container according to claim 5, wherein,

the mouth height (h 3) for stirring the storage in the second mouth is lower than the mouth heights (h 1, h 2) of the first mouth.

7. A resin container according to claim 5 or 6, wherein,

the top plate has a top surface groove (133) disposed along an outer peripheral portion of the top plate, the top surface groove having a depth (d 1) lower than an outer surface of the top plate in the axial direction.

8. The resin container according to any one of claim 5 to 7, wherein,

the bottom plate has a displacement bottom (111) at a bottom plate center portion (100A), the displacement bottom being a portion that protrudes generally inward of the resin container and deforms convexly outward of the resin container according to the weight of the content in the resin container.

9. The resin container according to claim 8, wherein,

the container stirring mouth is disposed in the center of the top plate, the top surface elevated portion is disposed on both sides in a direction perpendicular to a diameter direction of the container stirring mouth, and the outer surface (110 a) of the bottom plate excluding the displacement bottom is in contact with and supported by the elevated surface of the top surface elevated portion in a state where two resin containers are stacked in an axial direction of the resin containers.

10. The resin container according to any one of claim 1 to 9, wherein,

the resin container is made of a multi-layered polyethylene material, and an innermost layer (170) contacting the container is a high-cleanliness material layer.