JPH1076549A - Manufacture of storage container - Google Patents
Manufacture of storage containerInfo
- Publication number
- JPH1076549A JPH1076549A JP23443396A JP23443396A JPH1076549A JP H1076549 A JPH1076549 A JP H1076549A JP 23443396 A JP23443396 A JP 23443396A JP 23443396 A JP23443396 A JP 23443396A JP H1076549 A JPH1076549 A JP H1076549A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- storage container
- handle
- resin gate
- gate portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003860 storage Methods 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 229920005989 resin Polymers 0.000 claims abstract description 56
- 239000011347 resin Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 abstract description 7
- 230000003467 diminishing effect Effects 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
- B29C2045/2716—The gate axis being perpendicular to main injection axis, e.g. injecting into side walls of a container
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7134—Crates, e.g. for bottles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、収納容器の製造方
法に関し、詳しくは、容器開口部の近傍に把手用通孔を
有する合成樹脂製の収納容器を射出成形法により製造す
る方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a storage container, and more particularly, to a method for manufacturing a storage container made of synthetic resin having a through hole for a handle near a container opening by an injection molding method.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】合成樹
脂製の収納容器は、飲料用瓶の搬送や保管等に広く用い
られている。このような収納容器には、人手による搬送
を容易に行えるように、容器開口部の外周に把手部が設
けられているが、この把手部の下部に、把手部を手で握
り易くするための通孔を設けたものが多い。2. Description of the Related Art Containers made of synthetic resin are widely used for conveying and storing beverage bottles. In such a storage container, a handle portion is provided on the outer periphery of the container opening so that it can be easily transported by hand, and a lower portion of the handle portion is provided to make it easier to grasp the handle portion by hand. Many are provided with through holes.
【０００３】このような合成樹脂製の収納容器は、一般
に射出成形法で一体成形することにより製造されるが、
通常は、樹脂ゲート部が容器底面部に設けられているた
め、容器開口部の近傍に把手用通孔を設けたものは、把
手部の中央付近で樹脂が合流する状態になる。この射出
成形における樹脂の合流部（ウェルド部）は、そのとき
の成形条件の影響を受け易く、ウェルド強度も変化する
ため、厳重な品質管理体制が必要であった。[0003] Such a synthetic resin container is generally manufactured by integral molding by an injection molding method.
Usually, since the resin gate portion is provided on the bottom surface of the container, when the through hole for a handle is provided near the container opening, the resin is merged near the center of the handle portion. The joining portion (weld portion) of the resin in the injection molding is easily affected by the molding conditions at that time, and the weld strength also changes. Therefore, a strict quality control system is required.
【０００４】また、上記把手部を成形する金型部分に
は、型内の空気や樹脂の揮発分、樹脂の分解成分を型外
に排出するためのガス抜き部を設けて強度を得るように
しているが、ウェルド部の強度は他の部分と比べて劣っ
ていた。すなわち、上記把手部では、成形時に左右対称
の樹脂の流れが合流する状態になるため、ウェルド部が
一直線状に形成されることになり、左右対称性から、そ
の断面は、一平面状に近い状態になると考えられる。し
たがって、このウェルド部の強度は、母材の強度に比べ
ればかなり低い値となり、把手部における所定の強度を
得るためには、把手部の肉厚を増加させたり、補強用の
リブを設けたりする必要があった。[0004] In addition, a gas vent for discharging air, volatile components of the resin, and decomposed components of the resin to the outside of the mold is provided in a mold portion for molding the above-mentioned handle so as to obtain strength. However, the strength of the weld was inferior to the other parts. That is, in the above-mentioned handle portion, since the flows of the symmetrical resin flow merge at the time of molding, the weld portion is formed in a straight line, and the cross section thereof is close to a single plane due to the left-right symmetry. It is considered to be in a state. Therefore, the strength of the weld portion is considerably lower than the strength of the base material, and in order to obtain a predetermined strength in the handle portion, the thickness of the handle portion is increased or a rib for reinforcement is provided. I needed to.
【０００５】そこで本発明は、容器開口部近傍に把手用
通孔を有する収納容器を射出成形法により製造するにあ
たり、把手部の強度を向上させることが可能で、肉厚を
低下させたり、リブを不要にしたりすることができ、収
納容器の軽量化やコストダウンを図ることができる収納
容器の製造方法を提供することを目的としている。Therefore, according to the present invention, when a storage container having a through hole for a handle in the vicinity of the container opening is manufactured by an injection molding method, the strength of the handle can be improved, the thickness can be reduced, and the rib can be reduced. It is an object of the present invention to provide a method for manufacturing a storage container, which can eliminate the need for a container and can reduce the weight and cost of the storage container.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明の収納容器の製造方法は、容器開口部近傍に
把手用通孔を有する収納容器を射出成形法により製造す
る方法において、収納容器の高さ方向で、前記把手用通
孔より容器開口部側の範囲内に樹脂ゲート部を設けて樹
脂を注入することを特徴としている。In order to achieve the above object, a method of manufacturing a storage container according to the present invention is directed to a method of manufacturing a storage container having a through hole for a handle near an opening of a container by an injection molding method. It is characterized in that a resin gate is provided in a range of the container opening side from the handle through hole in the height direction of the container, and the resin is injected.
【０００７】さらに、本発明は、前記樹脂ゲート部が前
記把手用通孔の周囲に設けられていること、前記収納容
器の底面部に第２の樹脂ゲート部を設け、前記樹脂ゲー
ト部及び第２の樹脂ゲート部の一方又は双方がゲート部
の開閉時期を制御可能な構造を有していることを特徴と
し、また、前記樹脂ゲート部の断面積又は該樹脂ゲート
部に至るまでのランナー径が、前記第２の樹脂ゲート部
の断面積又は該第２の樹脂ゲート部に至るまでのランナ
ー径より大きく形成されていることを特徴としている。Further, the present invention provides that the resin gate portion is provided around the handle through hole, and a second resin gate portion is provided on a bottom portion of the storage container. 2, wherein one or both of the resin gate portions have a structure capable of controlling the opening / closing timing of the gate portion, and the cross-sectional area of the resin gate portion or the runner diameter up to the resin gate portion. Is formed to be larger than the sectional area of the second resin gate portion or the runner diameter up to the second resin gate portion.
【０００８】[0008]
【発明の実施の形態】以下、本発明を、図面を参照して
さらに詳細に説明する。図１は、本発明の収納容器の製
造方法を説明するための図であって、収納容器の底面側
から見た斜視図である。また、図２は、本発明の他の形
態例を示す説明図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a view for explaining a method for manufacturing a storage container of the present invention, and is a perspective view as viewed from the bottom side of the storage container. FIG. 2 is an explanatory diagram showing another embodiment of the present invention.
【０００９】まず、本発明で製造する収納容器１は、方
形状の底板２と、四周の側壁３，３とからなる箱状のも
のであって、容器開口部の外周には、把手用通孔４を有
する把手部５が形成されている。First, the storage container 1 manufactured by the present invention is a box-shaped container having a rectangular bottom plate 2 and four side walls 3 and 3. A handle 5 having a hole 4 is formed.
【００１０】そして、本形態例では、上記形状の収納容
器１を射出成形法により製造するにあたり、収納容器１
の高さ方向で、前記把手用通孔４より容器開口部側の範
囲内、すなわち、図１に符号Ａで示す範囲内に樹脂ゲー
ト部６を設けている。この樹脂ゲート部６の位置は、収
納容器１の大きさや把手部５の形状等に応じて前記範囲
内ならば任意に選定することができ、図１に示すような
容器角部でもよく、図２に示すように、通常の成形時に
ウェルド部となる把手部５の中央付近７、あるいは把手
用通孔４の周辺部の位置８，９でもよく、これらを組合
わせるようにしてもよい。In this embodiment, when the storage container 1 having the above shape is manufactured by the injection molding method, the storage container 1 is formed.
The resin gate portion 6 is provided within a range on the container opening side side of the handle through hole 4 in the height direction of FIG. The position of the resin gate portion 6 can be arbitrarily selected within the above range according to the size of the storage container 1, the shape of the handle portion 5, and the like, and may be a corner portion of the container as shown in FIG. As shown in FIG. 2, the position may be near the center 7 of the handle 5 serving as a weld during normal molding, or at positions 8 and 9 in the periphery of the through hole 4 for the handle, or a combination thereof.
【００１１】このように、収納容器１の把手部５を形成
する部分の近傍に樹脂ゲート部６を設けることにより、
把手部５への樹脂の流れを非対称にして把手部５の中央
付近にウェルド部が形成されないようにすることができ
るので、把手部５の強度を大幅に向上させることができ
る。As described above, by providing the resin gate portion 6 near the portion where the handle portion 5 of the storage container 1 is formed,
Since the flow of the resin to the handle portion 5 can be made asymmetric so that the weld portion is not formed near the center of the handle portion 5, the strength of the handle portion 5 can be greatly improved.
【００１２】また、収納容器１の底面部に第２の樹脂ゲ
ート部１０を設けて前記樹脂ゲート部６と共に樹脂を射
出注入することにより、成形時間の短縮を図れる。この
とき、樹脂ゲート部６及び第２の樹脂ゲート部１０に、
ゲート部の開閉時期を制御可能な構造、例えば，バルブ
ゲート構造やスピアシステム構造を設けることにより、
樹脂の流れを最適な状態に制御することができるので、
少ない樹脂量で必要十分な強度を得ることができる。The molding time can be shortened by providing the second resin gate 10 on the bottom of the storage container 1 and injecting and injecting the resin together with the resin gate 6. At this time, the resin gate portion 6 and the second resin gate portion 10
By providing a structure that can control the opening and closing timing of the gate, such as a valve gate structure and a spear system structure,
Since the flow of resin can be controlled to the optimal state,
A necessary and sufficient strength can be obtained with a small amount of resin.
【００１３】さらに、樹脂ゲート部６の断面積や該樹脂
ゲート部６に至るまでのランナー６ａの径を、第２の樹
脂ゲート部１０の断面積や該第２の樹脂ゲート部１０に
至るまでのランナー１０ａの径より大きく形成しておく
ことにより、樹脂ゲート部６からの樹脂注入量を多くす
ることができ、把手部５の周囲で樹脂が合流することを
確実に防止できる。Further, the cross-sectional area of the resin gate portion 6 and the diameter of the runner 6a reaching the resin gate portion 6 are determined by changing the cross-sectional area of the second resin gate portion 10 and the second resin gate portion 10. By making the diameter larger than the diameter of the runner 10a, the amount of resin injected from the resin gate 6 can be increased, and the resin can be reliably prevented from joining around the handle 5.
【００１４】このように、樹脂ゲート部の位置や構造を
適宜に設定して把手部５に樹脂の合流部が形成されない
ようにすることにより、把手部５の強度を向上させるこ
とができ、把手部５の強度を確保するために肉厚を増加
させたり、リブを設けたりする必要がなくなる。これに
より、収納容器１の軽量化や製造コストの低減が図れ
る。As described above, by appropriately setting the position and structure of the resin gate portion so that the resin confluence portion is not formed in the handle portion 5, the strength of the handle portion 5 can be improved. It is not necessary to increase the wall thickness or provide ribs to secure the strength of the portion 5. Thus, the weight of the storage container 1 and the manufacturing cost can be reduced.
【００１５】[0015]
【発明の効果】以上説明したように、本発明の収納容器
の製造方法によれば、把手部にウェルド部が形成される
ことがないので、厚肉にしたりリブを設けたりすること
なく把手部の強度向上が図れ、収納容器の軽量化やコス
トダウンが図れる。As described above, according to the method for manufacturing a storage container of the present invention, no weld is formed in the handle, so that the handle is not thickened or provided with ribs. , The weight of the storage container and the cost can be reduced.
【図１】 収納容器の底面側から見た斜視図である。FIG. 1 is a perspective view of a storage container as viewed from the bottom side.
【図２】 他の形態例を示す説明図である。FIG. 2 is an explanatory diagram showing another embodiment.
１…収納容器、２…底板、３…側壁、４…把手用通孔、
５…把手部、６…樹脂ゲート部、１０…第２の樹脂ゲー
ト部DESCRIPTION OF SYMBOLS 1 ... Storage container, 2 ... Bottom plate, 3 ... Side wall, 4 ... Handle through-hole,
5 Handle part, 6 Resin gate part, 10 Second resin gate part
Claims (5)
納容器を射出成形法により製造する方法において、収納
容器の高さ方向で、前記把手用通孔より容器開口部側の
範囲内に樹脂ゲート部を設けて樹脂を注入することを特
徴とする収納容器の製造方法。1. A method for manufacturing a storage container having a through hole for a handle in the vicinity of an opening of a container by an injection molding method, wherein the height of the storage container is within a range closer to the opening of the container than the through hole for a handle. A method for manufacturing a storage container, comprising providing a resin gate portion and injecting a resin.
周囲に設けられていることを特徴とする請求項１記載の
収納容器の製造方法。2. The method according to claim 1, wherein the resin gate portion is provided around the handle through hole.
ト部を設けたことを特徴とする請求項１記載の収納容器
の製造方法。3. The method for manufacturing a storage container according to claim 1, wherein a second resin gate portion is provided on a bottom surface of the storage container.
部は、少なくともいずれか一方がゲート部の開閉時期を
制御可能な構造を有していることを特徴とする請求項３
記載の収納容器の製造方法。4. The apparatus according to claim 3, wherein at least one of the resin gate portion and the second resin gate portion has a structure capable of controlling opening / closing timing of the gate portion.
A manufacturing method of the storage container according to the above.
樹脂ゲート部に至るまでのランナー径が、前記第２の樹
脂ゲート部の断面積又は該第２の樹脂ゲート部に至るま
でのランナー径より大きく形成されていることを特徴と
する請求項３記載の収納容器の製造方法。5. The resin gate portion has a cross-sectional area or a runner diameter leading to the resin gate portion, and a cross-sectional area of the second resin gate portion or a runner leading to the second resin gate portion. The method for manufacturing a storage container according to claim 3, wherein the storage container is formed to be larger than the diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23443396A JPH1076549A (en) | 1996-09-04 | 1996-09-04 | Manufacture of storage container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23443396A JPH1076549A (en) | 1996-09-04 | 1996-09-04 | Manufacture of storage container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1076549A true JPH1076549A (en) | 1998-03-24 |
Family
ID=16970941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23443396A Pending JPH1076549A (en) | 1996-09-04 | 1996-09-04 | Manufacture of storage container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1076549A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011020265A (en) * | 2009-07-13 | 2011-02-03 | Sanko Co Ltd | Integrally molded type container molding method |
-
1996
- 1996-09-04 JP JP23443396A patent/JPH1076549A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011020265A (en) * | 2009-07-13 | 2011-02-03 | Sanko Co Ltd | Integrally molded type container molding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Effective date: 20040525 Free format text: JAPANESE INTERMEDIATE CODE: A02 |