JP5429737B2 - container - Google Patents
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- JP5429737B2 JP5429737B2 JP2009102559A JP2009102559A JP5429737B2 JP 5429737 B2 JP5429737 B2 JP 5429737B2 JP 2009102559 A JP2009102559 A JP 2009102559A JP 2009102559 A JP2009102559 A JP 2009102559A JP 5429737 B2 JP5429737 B2 JP 5429737B2
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- container
- flange
- blow molding
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- Containers Having Bodies Formed In One Piece (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
本発明は、熱可塑性樹脂のブロー成形により形成される高温液体用の容器に関する。 The present invention relates to a container for high-temperature liquid formed by blow molding of a thermoplastic resin.
熱可塑性樹脂のブロー成形により形成される高温液体用の容器に関する従来例としては特許文献１に開示されているような樹脂製の内槽と、内槽の天井部と底部の外表面に配設されてなる金属製補強板と、内槽と金属製補強板の外表面を被覆する繊維強化樹脂体とから構成されているものがある。 As a conventional example related to a container for high-temperature liquid formed by blow molding of a thermoplastic resin, an inner tank made of resin as disclosed in Patent Document 1, and arranged on the outer surface of the ceiling and bottom of the inner tank There are some which are comprised from the metal reinforcement board formed, and the fiber reinforced resin body which coat | covers the outer surface of an inner tank and a metal reinforcement board.
しかし、特許文献１に開示されているような容器は樹脂製の内槽に加えて金属製補強板と繊維強化樹脂体とを別途必要とし、非常に高価となるという欠点があった。 However, the container disclosed in Patent Document 1 requires a metal reinforcing plate and a fiber reinforced resin body separately in addition to the resin inner tank, and has a drawback that it is very expensive.
しかるに、金属製補強板と繊維強化樹脂体を省いて樹脂製の内槽だけで構成した容器に高温の液体を満たすような場合、高温によって樹脂は軟化する上にブロー成形により形成される成形物の宿命ともいうべきピンチオフ部分の融着部位の強度的な弱点が露呈して、液体の自重による圧力によりピンチオフ部分の裂けた箇所から高温の液体が噴き出すという極めて危険な事故を完全には防ぐことができなかった。 However, when a high-temperature liquid is filled in a container composed of only a resin-made inner tank without the metal reinforcing plate and the fiber-reinforced resin body, the resin is softened by the high temperature and the molded product formed by blow molding. To prevent the extremely dangerous accident that high temperature liquid is ejected from the cracked part of the pinch-off part due to the pressure due to the weight of the liquid, exposing the weak point of the fusion part of the pinch-off part which should be called the fate of I could not.
解決しようとする課題は、従来の高温液体用の容器のように樹脂製の内槽に加えて金属製補強板と繊維強化樹脂体とを別途必要として非常に高価となることを避けるために、金属製補強板と繊維強化樹脂体を省いて樹脂製の内槽だけで構成した容器に高温の液体を満たすと、高温によって樹脂は軟化する上にブロー成形により形成される成形物の宿命ともいうべきピンチオフ部分の融着部位の強度的な弱点が露呈して、液体の自重による圧力によりピンチオフ部分の裂けた箇所から高温の液体が噴き出すという極めて危険な事故を完全には防ぐことができないという点である。本発明は上記の点を解決するためになされた。 The problem to be solved is to avoid the need for a metal reinforcing plate and a fiber reinforced resin body separately in addition to the resin inner tank as in the conventional container for high-temperature liquid, When a high temperature liquid is filled in a container composed only of an inner tank made of resin without the metal reinforcing plate and the fiber reinforced resin body, the resin is softened by the high temperature and is also called the fate of a molded product formed by blow molding. It is not possible to completely prevent an extremely dangerous accident in which high-temperature liquid is ejected from the cracked part of the pinch-off part due to the pressure due to the weight of the liquid because the weak point of the fusion part of the power pinch-off part is exposed. It is. The present invention has been made to solve the above-described points.
上記目的を果たすため本発明は、熱可塑性樹脂のブロー成形により形成される容器であって、該容器の成形用金型のパーティングラインに沿って少なくとも該容器の設置状態における側方および下方に該パーティングラインの全長の４分の３以上の長さを持つフランジを有し、且つ該容器の設置状態における水平面にほぼ平行で該フランジとの干渉によって部分的に途切れる箇所を除き
該容器の両側面部分と前後面部分とをほぼ一周する
溝状凹部を設けたことを最も主要な特徴とする。
To achieve the above object, the present invention is a container formed by blow molding of a thermoplastic resin, and at least laterally and downwardly in the installed state of the container along a parting line of a molding die for the container. Except where the parting flange has a flange having a length of three quarters or more of the parting line and is partially parallel to the horizontal plane in the installed state of the container and partially interrupted by interference with the flange
The most main feature is that a groove-like recess is provided that substantially goes around both side portions and the front and rear surface portions of the container .
また、該フランジが容器を上方から見たいわゆる平面図上で両側面部分と前後面部分との4つの辺に囲まれた四辺形の一本の対角線上に位置することを第２の主要な特徴とする。 Further, the second main feature is that the flange is located on one diagonal line of a quadrilateral surrounded by four sides of the side surface portion and the front and back surface portion in a so-called plan view of the container as viewed from above. Features.
本発明によれば、ブロー成形により形成される成形物の宿命ともいうべきピンチオフ部分の融着部位の強度的な弱点がフランジによって充分に補強されていて該ピンチオフ部分が裂けて内部の液体が噴き出すおそれのない容器を、金属製補強板と繊維強化樹脂体とを別途必要とせずに非常に安価に製造できるという利点がある。 According to the present invention, the strength weakness of the fusion part of the pinch-off part, which should be called the fate of the molded product formed by blow molding, is sufficiently reinforced by the flange, and the pinch-off part is torn and the liquid inside is ejected. There is an advantage that a container without fear can be manufactured at a very low cost without separately requiring a metal reinforcing plate and a fiber reinforced resin body.
ブロー成形により形成される成形物の宿命ともいうべきピンチオフ部分の融着部位の強度的な弱点がなく該ピンチオフ部分が裂けて内部の液体が噴き出すおそれのない容器を、金属製補強板と繊維強化樹脂体とを別途必要とせずに非常に安価に製造するという目的を、該容器の成形用金型のパーティングラインに沿って少なくとも該容器の設置状態における側方および下方に該パーティングラインの全長の４分の３以上の長さを持つフランジを有し、且つ該容器の設置状態における水平面にほぼ平行で該フランジとの干渉によって部分的に途切れる箇所を除き
該容器の両側面部分と前後面部分とをほぼ一周する
溝状凹部を設けることによって、ブロー成形という安価な工法のみを用いて、経済性を損なわずに実現した。
A metal reinforcing plate and fiber reinforced container that does not have the strength weakness of the fusion part of the pinch-off part, which should be called the fate of the molded product formed by blow molding, and the pinch-off part is not torn and the liquid inside is not ejected. The purpose of manufacturing the resin body at a very low cost without the need for a separate resin body is to be provided along the parting line of the mold for molding the container at least laterally and downwardly in the installed state of the container. Except for a portion having a flange having a length of 3/4 or more of the entire length, and being partially cut off by interference with the flange substantially parallel to the horizontal surface in the installed state of the container
By providing a groove-like recess that substantially circles both sides and the front and rear surfaces of the container, it was realized using only an inexpensive method called blow molding without damaging the economy.
本発明の構成を発明の実施の形態に基づいて説明すると次の通りである。図１はＣＡＤのワイヤフレームデータを隠れ線消去して表示した、本発明の１実施例を示す熱可塑性樹脂のブロー成形により形成される容器１の設置状態における斜視図である。 The configuration of the present invention will be described based on the embodiments of the invention as follows. FIG. 1 is a perspective view of an installed state of a container 1 formed by blow molding of a thermoplastic resin according to one embodiment of the present invention, which is displayed by erasing hidden wire frame data of CAD.
３は該容器１の分割金型(図示せず)のパーティングラインに沿って全周にわたって設けられたフランジである。 Reference numeral 3 denotes a flange provided over the entire circumference along a parting line of a split mold (not shown) of the container 1.
２は該容器１の設置状態における水平面にほぼ平行で、該フランジ３との干渉によって部分的に途切れる箇所を除き該容器１の両側面部分と前後面部分とをほぼ一周する溝状凹部である。 Reference numeral 2 denotes a groove-like recess that is substantially parallel to the horizontal plane in the installed state of the container 1 and that makes a round around the both side portions and the front and rear surface portions of the container 1 except for portions that are partially interrupted by interference with the flange 3. .
次に該容器１の製造方法を説明する。該容器１用の分割金型（図示せず）内に半溶融状態にあるポリプロピレン等の熱可塑性樹脂のパリソン（図示せず）を垂下させ該分割金型を型締めする。該パリソンの大きさは、型締めしたときに該パーティングラインの全周に成形バリが生成される大きさとする。 Next, the manufacturing method of this container 1 is demonstrated. A parison (not shown) of a thermoplastic resin such as polypropylene in a semi-molten state is dropped in the split mold (not shown) for the container 1 to clamp the split mold. The size of the parison is such that a molding burr is generated on the entire circumference of the parting line when the mold is clamped.
尚、該パリソンに適用される熱可塑性樹脂としてはポリプロピレンに限らず、ポリエチレンや他のポリオレフィン系樹脂、ポリエチレンテレフタレートやポリブチレンテレフタレート、ポリエチレンナフタレート等のポリエステル系樹脂、ポリアミド系樹脂、ポリアセタール系樹脂、シンジオタクチックポリスチレン、ポリスチレン、ゴム改質ポリスチレン、アクリロニトリル−スチレン共重合体、アクリロニトリル−ブタジエン−スチレン共重合体、変性ポリフェニレンオキサイド、ポリフェニレンサルファイド、ポリカーボネート等、ブロー成形が可能な樹脂であれば何でも良い。また、該熱可塑性樹脂にガラス繊維、炭素繊維、ボロン繊維、硫酸カルシウム粉末、炭酸カルシウム粉末等を混錬させた複合材であってもよい。 The thermoplastic resin applied to the parison is not limited to polypropylene, but polyethylene and other polyolefin resins, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polyamide resins, polyacetal resins, Any resin that can be blow molded may be used, such as syndiotactic polystyrene, polystyrene, rubber-modified polystyrene, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer, modified polyphenylene oxide, polyphenylene sulfide, and polycarbonate. Further, a composite material obtained by kneading glass fiber, carbon fiber, boron fiber, calcium sulfate powder, calcium carbonate powder and the like into the thermoplastic resin may be used.
その後該パリソン内に圧縮空気を吹き込んでブローアップし離型して、該容器１のブロー成形を完了させる。 Thereafter, compressed air is blown into the parison and blown up and released to complete blow molding of the container 1.
成形バリ等を除去した該容器１に液体を入れた場合、該容器１は液体の自重による内圧力のため変形しようとするが、複数の該溝状凹部２がいわゆる箍の役目を果たして該容器１の変形を最小限に抑えることができる。 When a liquid is put into the container 1 from which molded burrs or the like have been removed, the container 1 tends to be deformed due to an internal pressure due to the weight of the liquid, but the plurality of groove-like recesses 2 serve as so-called wrinkles. The deformation of 1 can be minimized.
また、ブロー成形により形成される成形物の宿命ともいうべきピンチオフ部分の融着部位の強度的な弱点は該フランジ３によって充分に補強されているので液体の自重による内圧力により該ピンチオフ部分が裂けて内部の液体が噴き出すおそれはない。 In addition, the strength weakness of the fusion part of the pinch-off part, which should be called the fate of the molded product formed by blow molding, is sufficiently reinforced by the flange 3, so that the pinch-off part is torn by the internal pressure due to the weight of the liquid. There is no risk of the liquid inside.
尚、上記実施例では該フランジ３を該容器１の分割金型(図示せず)のパーティングラインに沿って全周にわたって設けた例を説明したが、該容器１の設置状態における該容器１の上方へは液体の自重による圧力はほとんど作用しないため、上方部分の該フランジ３は省略可能であり、該容器１の設置状態における該容器１の両側面部分および下方の３方に成形用金型のパーティングラインに沿って該パーティングラインの全長の少なくとも４分の３以上の長さを持たせればよい。 In addition, although the said Example demonstrated the example which provided this flange 3 over the perimeter along the parting line of the division mold (not shown) of this container 1, this container 1 in the installation state of this container 1 was demonstrated. Since the pressure due to the weight of the liquid hardly acts on the upper part of the container 1, the flange 3 in the upper part can be omitted. What is necessary is just to give the length of at least 3/4 or more of the full length of this parting line along the parting line of a type | mold.
また、上記実施例では該容器１の両側面部分と前後面部分とをほぼ一周する該溝状凹部２を例として説明したが、該フランジ３の近傍はそうでない部位に比べて剛性が高いので該溝状凹部２を浅く、もしくは省略することが可能である。 Further, in the above embodiment, the groove-shaped recess 2 that substantially goes around both the side surface portions and the front and rear surface portions of the container 1 has been described as an example, but the vicinity of the flange 3 has higher rigidity than other portions. The groove-like recess 2 can be shallow or omitted .
また、上記実施例では該容器１が該フランジ３の存在する両側面部分と、該両側面部分から位相的に垂直軸周りに９０度ずれた、即ち該フランジ３の存在しない前後面部分とからなる形態を説明したが、両側面部分の一方と前後面部分の一方の境目に該フランジ３が存在する形態でも構わない。この場合の、設置状態における該容器１を上方から見たいわゆる平面図上では、両側面部分と前後面部分との4つの辺に囲まれた四辺形の一本の対角線上に該フランジ３が位置することになる。 Moreover, in the said Example, this container 1 is shifted from the both-sides surface part which this flange 3 exists, and the front-and-back surface part which shifted | deviated 90 degree | times around the vertical axis from this both-sides part, ie, this flange 3 does not exist. Although the form which becomes is demonstrated, the form in which this flange 3 exists in one boundary of one side part and the front-and-rear surface part may be sufficient. In this case, on the so-called plan view of the container 1 in the installed state viewed from above, the flange 3 is on one diagonal line of a quadrilateral surrounded by the four sides of the side surface portion and the front and back surface portions. Will be located.
以上実施例に述べたように本発明によれば、熱可塑性樹脂のブロー成形により形成される容器において、該容器の成形用金型のパーティングラインに沿って少なくとも該容器の設置状態における側方（上記、設置状態における該容器を上方から見たいわゆる平面図上で、両側面部分と前後面部分との4つの辺に囲まれた四辺形の一本の対角線上に該フランジが位置する形態の該フランジの垂直部分も、該容器の設置状態における側方とする。）および下方に該パーティングラインの全長の４分の３以上の長さを持つフランジを有し、且つ該容器の設置状態における水平面にほぼ平行で該フランジとの干渉によって部分的に途切れる箇所を除き
該容器の両側面部分と前後面部分とをほぼ一周する
溝状凹部を設けたため、ブロー成形により形成される成形物の宿命ともいうべきピンチオフ部分の融着部位の強度的な弱点がフランジによって充分に補強されていることで、液体の自重による内圧力により該ピンチオフ部分が裂けて内部の液体が噴き出すおそれのない容器を、金属製補強板と繊維強化樹脂体とを別途必要とせずに非常に安価に製造できるという効果がある。
As described above in the embodiments, according to the present invention, in the container formed by blow molding of the thermoplastic resin, at least the side in the installed state of the container along the parting line of the molding die of the container (The form in which the flange is positioned on one diagonal line of the quadrilateral surrounded by the four sides of the side surface portion and the front and back surface portions on the so-called plan view of the container in the installed state as viewed from above. The vertical portion of the flange is also a side in the installation state of the container.) And a flange having a length of three quarters or more of the entire length of the parting line is provided below and the container is installed. Except for locations that are almost parallel to the horizontal plane in the condition and are partially interrupted by interference with the flange
Strengthened weakness of the fusion part of the pinch-off part, which should be called the fate of the molded product formed by blow molding, because the groove-like concave part that substantially circulates the both side surface parts and the front and rear surface parts of the container is provided. Since the flange is sufficiently reinforced by the flange, a metal reinforcing plate and a fiber reinforced resin body are separately required for a container in which the pinch-off portion is not torn by the internal pressure due to the weight of the liquid and the liquid inside is not ejected. Therefore, it can be manufactured at a very low cost.
本発明は水や油、薬液等を貯留するための容器に限らず、他の液体や粉体を貯留するための容器一般に利用可能である。 The present invention is not limited to containers for storing water, oil, chemicals, and the like, but can be used for containers for storing other liquids and powders.
１ 容器
２ 溝状凹部
３ フランジ
1 container 2 groove-shaped recess 3 flange
Claims (2)
該容器の両側面部分と前後面部分とをほぼ一周する
溝状凹部を設けたことを特徴とする容器 A container formed by blow molding of a thermoplastic resin, which is at least four minutes along the parting line of the molding die of the container at least laterally and downwardly in the installed state of the container Except for a portion that has a flange length of 3 or more and that is substantially parallel to the horizontal plane in the installed state of the container and is partially interrupted by interference with the flange.
A container provided with a groove-like recess that substantially goes around both sides and front and rear surfaces of the container
The flange according to claim 1 is located on one diagonal line of a quadrilateral surrounded by four sides of a side surface portion and a front and back surface portion on a so-called plan view when the container is viewed from above. Container according to claim 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009102559A JP5429737B2 (en) | 2009-04-21 | 2009-04-21 | container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009102559A JP5429737B2 (en) | 2009-04-21 | 2009-04-21 | container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010254301A JP2010254301A (en) | 2010-11-11 |
| JP5429737B2 true JP5429737B2 (en) | 2014-02-26 |
Family
ID=43315706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009102559A Expired - Fee Related JP5429737B2 (en) | 2009-04-21 | 2009-04-21 | container |
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| Country | Link |
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| JP (1) | JP5429737B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2545345Y2 (en) * | 1992-10-13 | 1997-08-25 | 東洋製罐株式会社 | Plastic handle bottle |
| JP2666719B2 (en) * | 1994-03-31 | 1997-10-22 | 東洋製罐株式会社 | Foldable blow molded bottle |
| JPH11130032A (en) * | 1997-10-29 | 1999-05-18 | Yoshino Kogyosho Co Ltd | Synthetic resin-made simple disposable container which is easy to squash for disposal |
| JP3928255B2 (en) * | 1998-04-21 | 2007-06-13 | 株式会社吉野工業所 | Blow molding container |
| JP3831813B2 (en) * | 2000-07-17 | 2006-10-11 | 株式会社吉野工業所 | Synthetic resin thin-walled enclosure |
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2009
- 2009-04-21 JP JP2009102559A patent/JP5429737B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JP2010254301A (en) | 2010-11-11 |
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