JP2002193234A - Container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container which has a large sized partition and in which an outside container and a partition portion are simultaneously and integrally manufactured, and a method for manufacturing the same. SOLUTION: This container has an inside partition, the partition and the outside container are simultaneously and integrally manufactured, and this container preferably has the capacity of 10L or more.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container having a partition.

[0002]

2. Description of the Related Art A container having a partition is manufactured by a method in which a partition is attached after manufacturing an outer tub and a method in which the outer tub and a partition are integrally formed. In view of the man-hours in the manufacturing process and the tightness between the partition and the outer tank, a method of integrally manufacturing the outer tank and the partition is preferable, and it is more preferable that both are made of the same material.

[0003] A small container manufactured integrally with an outer tank and a partition can be manufactured by injection molding of a thermoplastic resin or casting of metal. However, when manufacturing an integrated container having a large outer tank and a partition portion, injection molding is unsuitable because the manufacturing cost of the mold is high and the weight of the mold is large and it is difficult to handle. On the other hand, when casting metal,
The manufactured product is heavy and its handling is not easy. Therefore, as a container having a large partition, plastic having a low specific gravity and high strength and a fiber-reinforced plastic (abbreviated as FRP) are used as materials. However, as a method of manufacturing these containers, there is a method in which the container and the partition portion are separately manufactured and then joined, but in this manufacturing method, the bonding between the container and the partition portion is insufficient,
There is a problem that water leakage and breakage of the partition portion easily occur. In addition, there is a method of manufacturing by bonding boxes, but this manufacturing method has a problem that the joint portion of the container main body is easily broken, the number of steps is large, and the productivity is low.

[0004]

SUMMARY OF THE INVENTION The present invention provides a container having a large partition, in which an outer tub and a partition portion are simultaneously and integrally manufactured, and a method for manufacturing the same.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have completed the present invention. According to the present invention, the container is manufactured by simultaneously integrating the outer tub and the partition by RIM.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the manufacture of a container by RIM by simultaneously integrating an outer tub and a partition. That is, in the container of the present invention, the outer tub and the partition are integrally formed simultaneously by RIM. Of the present invention,
As for the capacity of the container integrated with the partition, in terms of manufacturing cost,
Larger volumes favor containers manufactured by RIM over injection molding. The capacity is preferably 10 L or more, more preferably 100 L or more, more preferably 1000 L or more, and particularly preferably 10,000 L or more. The material of the container of the present invention is not particularly limited as long as it can be applied to RIM, and urethane, unsaturated polyester, epoxy resin, phenol resin, urea resin, thermosetting resin such as cycloolefin-based metathesis polymer, ,
A thermoplastic resin such as nylon can be used. A cycloolefin-based metathesis polymer is preferred because of its strength, toughness, and short molding time.

As the metathesis polymerizable cycloolefin used in the present invention, at least one selected from bicyclic or higher norbornenes and C4 or higher monocyclic cycloolefins can be used. Among them, norbornene such as substituted or unsubstituted norbornene, dicyclopentadiene, dihydrodicyclopentadiene and the like are preferably used.

The norbornenes include norbornene,
Norbornadiene, methyl norbornene, dimethyl norbornene, ethyl norbornene, ethylidene norbornene, butyl norbornene, 5-acetyl-2-norbornene, dimethyl-5-norbornene-2,3-dicarboxylate, N-hydroxy-5-norbornene-2,
3-dicarboximide, 5-norbornene-2-carbonitrile, 5-norbornene-2-carboxaldehyde, 5-norbornene-2,3-dicarboxylic acid monomethyl ester, 5-norbornene-2,3-dicarboxylic acid dimethyl ester, 5-norbornene-2,3-dicarboxylic acid diethyl ester, 5-norbornene-2,3
Dicarboxylic acid di-n-butyl ester, 5-norbornene-2,3-dicarboxylic acid dicyclohexyl ester, 5-norbornene-2,3-dicarboxylic acid dibenzyl ester, 5-norbornene-2,3-dicarboxylic anhydride, 3,6-epoxy-1,2,3,6-tetrahydrophthalic anhydride, 5-norbornene-2,3-dicarboxylic acid, 5-norbornene-2-methanol, 6-triethoxysilyl-2-norbornene, 5-norbornene Tricyclic norbornene such as -2-ol, dicyclopentadiene (a dimer of cyclopentadiene), dihydrodicyclopentadiene, methyldicyclopentadiene, dimethyldicyclopentadiene, etc., tricyclic norbornene, tetracyclododecene, methyltetra Cyclododecene, dimethylcyclote Tetracyclic norbornene such Radodesen, tricyclopentadiene (trimer of cyclopentadiene) (tetramer cyclopentadiene) tetra cyclopentadiene include pentacyclic or more norbornene like.

A compound having two or more norbornene groups, for example, tetracyclododecadiene, symmetric tricyclopentadiene, etc. can also be used. Cyclobutenes other than norbornene, cyclopentene, cyclooctene, cyclododecene, 1,5-cyclooctadiene,
1,3,5,7-cyclooctatetraene, 1,5,7
-Cyclododecatriene, 5,6-epoxy-1-cyclooctene, 3,4-epoxy-1-cyclooctene,
5-methoxy-1-cyclooctene, 5-bromo-1-
Cyclooctene, 5-isopropoxy-1-cyclooctene, 5-formyl-1-cyclooctene, 5-methoxy-1-cyclooctene, ethyl cyclooct-1-
Ene-5-carboxylate, (trimethylsilyl)
Cycloolefins such as cyclooct-1-ene-5-carboxylate, tetrahydroindene, methyltetrahydroindene can also be used. The above compounds can be used alone or as a mixture of a plurality. As the cycloolefin, dicyclopentadiene is particularly preferred in view of strength and cost.

[0010] The use of the container obtained by the present invention is not particularly limited, but it can be used in the fields of housing equipment, transportation equipment, chemical industry and the like. Specifically, it can be used as a septic tank, a water storage tank, a container, a plating tank and the like.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments shown in the drawings. FIG. 1 is a plan view of a container according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II of FIG. Such a container of the present embodiment can be manufactured by dicyclopentadiene-based RIM.

[0012]

As described above, the container of the present invention has a partition part integrated with the outer tub, so that there is no problem such as water leakage due to breakage of the partition part. However, by manufacturing simultaneously with the outer tank, the manufacturing process can be reduced. Also, by manufacturing with RIM,
Large containers can be manufactured. Furthermore, since it is made of resin, it has high strength and is lightweight, so that it is easy to handle. Containers manufactured using the present invention are large-sized and are required to be easily handled, for example, molding materials for housing equipment such as septic tanks, bathtubs, water storage tanks, transportation equipment such as containers, plating. It can be used in fields such as chemical industries such as tanks.

[Brief description of the drawings]

FIG. 1 is a plan view showing a container according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II of FIG.

[Explanation of symbols]

 1. Outer vessel 2 partition

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Katsuhiro Takahashi 1250 Shimoedori, Shimodate-shi, Ibaraki Pref.Hitachi Kasei Kogyo Co., Ltd. In the Yuki Works of Seiko Kogyo Co., Ltd. JF01

Claims (7)

[Claims] 1. A container having a partition therein, wherein the partition and the outer tub are simultaneously and integrally manufactured. 2. The container according to claim 1, wherein the content is 10 L or more. 3. The container according to claim 1, wherein the material includes a plastic. 4. The container according to claim 1, which is molded in a mold. 5. The container according to claim 1, which is manufactured by RIM. 6. The container according to claim 1, comprising a polymer of cycloolefins capable of metathesis polymerization. 7. The container according to claim 1, wherein the metathesis-polymerizable cycloolefin is dicyclopentadiene.