JP2011226261A - Block member for rainwater storage tank - Google Patents

Block member for rainwater storage tank Download PDF

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JP2011226261A
JP2011226261A JP2011125189A JP2011125189A JP2011226261A JP 2011226261 A JP2011226261 A JP 2011226261A JP 2011125189 A JP2011125189 A JP 2011125189A JP 2011125189 A JP2011125189 A JP 2011125189A JP 2011226261 A JP2011226261 A JP 2011226261A
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block member
peripheral wall
leg
rainwater storage
top wall
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JP5523397B2 (en
JP2011226261A5 (en
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Manabu Watanabe
学 渡邊
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AKITA ECO PLASH CO Ltd
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AKITA ECO PLASH CO Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108—Rainwater harvesting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Sewage (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a block member for a rainwater storage tank, capable of securing strength even in the case of using waste plastic such as container/package recycling material.SOLUTION: A block member 1 includes a leg 32 having a tubular peripheral wall 30 that protrudes upward from a base 2. The peripheral wall 30 of the leg 32 has a thicker portion.

Description

本発明は、浸水や土壌流出などを防ぐ雨水貯留槽に用いられるブロック部材に関するものである。   The present invention relates to a block member used in a rainwater storage tank that prevents flooding, soil runoff, and the like.

例えば特許文献１〜６に記載されているこの種のブロック部材は、ポリプロピレンなどの合成樹脂から成形され、縦横及び上下に連結されて地中に埋められて使用される。このような使用状態のために、ブロック部材には、水平方向及び鉛直方向に対する圧縮強度が求められる。   For example, this type of block member described in Patent Documents 1 to 6 is molded from a synthetic resin such as polypropylene, and is used by being buried vertically and horizontally and buried in the ground. For such a use state, the block member is required to have compressive strength in the horizontal direction and the vertical direction.

特開２００２−３０９６５８号公報JP 2002-309658 A 特開２００６−２００３５６号公報JP 2006-200376 A 特開２００２−３０９６５８号公報JP 2002-309658 A 特開平１１−２２２８８６号公報JP-A-11-222886 特開２００７−１６５３３号公報JP 2007-16533 A 特開２００８−１５７０２６号公報JP 2008-157026 A

ところで、近年、容器包装リサイクル法の施行を受け、家庭から排出されたプラスチック系の容器包装などが市町村にて分別収集され、業者にて、利用可能な廃プラスチックであるポリプロピレンとポリエチレンを選別し、破砕し、洗浄するなどしてペレットを製造し、このペレットから、プラスチック製品の代替製品を成形することが試みられている。   By the way, in recent years, following the enforcement of the Containers and Packaging Recycling Law, plastic containers and packaging discharged from households are collected separately in municipalities, and the waste plastics that can be used are sorted by polypropylene and polyethylene. Attempts have been made to produce pellets by crushing, washing, etc., and molding an alternative product of the plastic product from the pellets.

しかし、廃プラスチックから不要なプラスチック樹脂、木くず、ガラス、鉄くず、紙くずといった不純物を取り除くには限界があり、ペレットの材料には複数の合成樹脂及びこれらの不純物が混在してしまうのが現状となっている。このようなペレットから上記のブロック部材を成形する場合、従来のように一つの合成樹脂（ポリプロピレン）からブロック部材を形成する場合に比べて、ブロック部材の強度が低下してしまう。   However, there are limits to removing impurities such as unnecessary plastic resin, wood scrap, glass, iron scrap, and paper scrap from waste plastics, and the current situation is that multiple synthetic resins and these impurities are mixed in the pellet material. It has become. When the block member is formed from such a pellet, the strength of the block member is reduced as compared with the case where the block member is formed from one synthetic resin (polypropylene) as in the prior art.

そこで、本発明は、ポリプロピレン及びポリエチレンを含む複数の合成樹脂からなる複層フィルム素材を用いた容器包装プラスチック素材、所謂「容リ材」と言われる廃プラスチックを用いた場合であっても、強度を確保することができるブロック部材を提供することをその目的としている。   Therefore, the present invention is a container packaging plastic material using a multilayer film material composed of a plurality of synthetic resins including polypropylene and polyethylene, even when using waste plastic so-called "containable material" It is an object of the present invention to provide a block member capable of ensuring the above.

上記目的を達成するべく、本発明のブロック部材は、フィルム系のポリプロピレン及びポリエチレンを主成分として含む廃プラスチックから成形され、雨水貯留槽に用いられるものにおいて、ベース部と、ベース部から上方に突出した筒状の周壁を有する脚部と、を有し、脚部の周壁は、部分的に肉厚に形成されたものである。   In order to achieve the above object, the block member of the present invention is formed from waste plastic containing film-based polypropylene and polyethylene as main components, and is used for a rainwater storage tank, and projects upward from the base portion. A leg portion having a cylindrical peripheral wall, and the peripheral wall of the leg portion is partially formed thick.

本発明によれば、脚部に肉厚の部分を形成しているので、構造上簡易に脚部の圧縮強度を向上することができる。また、その肉厚部分を部分的なものとすることで、脚部全体（あるいはベース部及び脚部の全体）の厚みを均一にする場合に比べて、材料コストの低減及び軽量化に配慮しながら、圧縮強度を確保することができる。したがって、フィルム系のポリプロピレン及びポリエチレンをベースとした複合素材を原料とした場合、すなわち一般に強度がでないと言われる「容リ材」を用いた場合であっても、強度を確保したブロック部材を提供することができる。   According to the present invention, since the thick portion is formed in the leg portion, the compression strength of the leg portion can be easily improved in structure. In addition, by making the thick part partly, we consider reduction of material cost and weight reduction compared with the case where the thickness of the whole leg part (or the whole base part and leg part) is made uniform. However, the compressive strength can be ensured. Therefore, even when film-based polypropylene and polyethylene-based composite materials are used as raw materials, that is, when using “containable materials” that are generally said not to be strong, block members that ensure strength are provided. can do.

好ましくは、脚部の周壁は、その高さ方向の途中から上端にかけて徐々に肉厚に形成されるとよい。より好ましくは、脚部は、周壁の上端に連なる頂壁を有しており、頂壁は、周壁の上端部と同程度の肉厚に形成されるとよい。このような構成とすることで、ベース部から遠い脚部の上側部分について圧縮破壊強度を向上することができる。   Preferably, the peripheral wall of the leg portion is gradually formed thicker from the middle in the height direction to the upper end. More preferably, the leg portion has a top wall that continues to the upper end of the peripheral wall, and the top wall may be formed to have a thickness that is approximately the same as the upper end portion of the peripheral wall. By setting it as such a structure, compressive fracture strength can be improved about the upper part of the leg part far from a base part.

また、本発明のブロック部材は、上記の廃プラスチック（「容リ材」）に相溶化剤を添加したものから成形されるとよい。こうすることで、当該廃プラスチック（「容リ材」）の強度等の物理特性が改善され、材質上もブロック部材の強度を高めることができる。   In addition, the block member of the present invention may be molded from the above-mentioned waste plastic (“containable material”) to which a compatibilizing agent is added. By doing so, physical properties such as the strength of the waste plastic (“recovery material”) are improved, and the strength of the block member can be increased in terms of material.

実施形態に係るブロック部材の底面図である。It is a bottom view of the block member concerning an embodiment. 図１に示すＡ−Ａ線で切断したブロック部材の断面図である。It is sectional drawing of the block member cut | disconnected by the AA line shown in FIG. 図１に示すブロック部材の右側面図である。It is a right view of the block member shown in FIG.

添付図面を参照して、本発明の好適な実施形態に係るブロック部材を説明する。
図１〜３に示すように、ブロック部材１は、ベース部２と、ベース部２から上方に突出した４つの脚部３と、で一体に形成されている。脚部３の数及び位置は任意であり、例えば一つの場合にはベース部２の中央から脚部３を突設させてもよい。 A block member according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 to 3, the block member 1 is integrally formed of a base portion 2 and four leg portions 3 protruding upward from the base portion 2. The number and position of the leg portions 3 are arbitrary. For example, in the case of one, the leg portions 3 may be projected from the center of the base portion 2.

ベース部２は、平面視方形の平板部１０と、平板部１０の外周に沿って枠上に立ち上がる縁部１１と、を有している。平板部１０は、中央に比較的大きな四つの透孔１２を有するほか、周縁部など他の部位にも透孔１４を有している。平板部１０の下面１６は、平坦面で形成されている一方、平板部１０の上面１８には複数のリブ２０が上方に突出形成されている。リブ２０は、縁部１１に連接され、ブロック部材１の強度を高めている。なお、ベース部２の形状は適宜設計変更することができ、例えば平板部１０を円形などにすることもできる。   The base portion 2 includes a flat plate portion 10 having a square shape in plan view, and an edge portion 11 rising on the frame along the outer periphery of the flat plate portion 10. The flat plate portion 10 has four relatively large through holes 12 at the center, and also has through holes 14 in other portions such as a peripheral portion. The lower surface 16 of the flat plate portion 10 is formed as a flat surface, while a plurality of ribs 20 are formed on the upper surface 18 of the flat plate portion 10 so as to protrude upward. The rib 20 is connected to the edge portion 11 to increase the strength of the block member 1. In addition, the shape of the base part 2 can be changed in design as appropriate. For example, the flat plate part 10 can be circular.

脚部３は、筒状の周壁３０と、周壁３０の上端を閉塞する頂壁３２と、で構成されている。周壁３０は、平板部１０の上面１８から上方に突出しており、上方に向かって漸次小径となるようにテーパ状に形成されている。周壁３０の横断面は、円形、楕円形、多角形など任意に形成することができるが、本実施形態の場合には、曲率中心が脚部３の内部と外部とで交互に位置するように複数の曲面を線対称に連ねて形成されている。なお、周壁３０には、孔などの貫通部は形成されていない。一方、平坦な頂壁３２には、４つの透孔３４が形成されていると共に、透孔３４の外側に一対の係合突起３６、３６と一対の係合孔３８、３８とが形成されている。   The leg portion 3 includes a cylindrical peripheral wall 30 and a top wall 32 that closes the upper end of the peripheral wall 30. The peripheral wall 30 protrudes upward from the upper surface 18 of the flat plate part 10, and is formed in a tapered shape so as to gradually become a small diameter upward. The cross section of the peripheral wall 30 can be arbitrarily formed such as a circle, an ellipse, or a polygon, but in the case of this embodiment, the center of curvature is alternately positioned inside and outside the leg portion 3. A plurality of curved surfaces are formed in line symmetry. The peripheral wall 30 is not formed with a through portion such as a hole. On the other hand, the flat top wall 32 is formed with four through holes 34, and a pair of engaging projections 36, 36 and a pair of engaging holes 38, 38 are formed outside the through hole 34. Yes.

特に図２に示すように、脚部３の周壁３０は、製品強度を増すために、部分的に肉厚に形成されている。具体的には、周壁３０の上半部４０は下半部４２よりも肉厚に形成されており、しかも、周壁３０の上半部４０は、頂壁３２にかけて徐々に肉厚となるように形成されている。また、頂壁３２も周壁３０の上端部と同程度の肉厚で形成されている。一例を挙げると、平板部１０及び周壁３０の下半部４２の肉厚は５ｍｍで同じであるのに対し、周壁３０の上半部４０の上端部及び頂壁３０の肉厚は７〜８ｍｍとなっている。なお、脚部３の上端側の圧縮破壊強度を高めるためには、周壁３０と頂壁３２とを連ねる円弧部分の曲率を大きくすることが好ましい。また、他の実施態様では、周壁３０の下半部４２を部分的に肉厚にしたり、あるいは、頂壁３２を肉厚に形成しないことも可能であるが、上記のように構成した方が強度を向上できる。   In particular, as shown in FIG. 2, the peripheral wall 30 of the leg 3 is partially formed thick to increase product strength. Specifically, the upper half portion 40 of the peripheral wall 30 is formed to be thicker than the lower half portion 42, and the upper half portion 40 of the peripheral wall 30 gradually increases in thickness toward the top wall 32. Is formed. The top wall 32 is also formed with the same thickness as the upper end portion of the peripheral wall 30. For example, the thickness of the flat plate 10 and the lower half 42 of the peripheral wall 30 is the same at 5 mm, whereas the thickness of the upper end 40 and the top wall 30 of the upper half 40 of the peripheral wall 30 is 7 to 8 mm. It has become. In order to increase the compressive fracture strength on the upper end side of the leg portion 3, it is preferable to increase the curvature of the arc portion connecting the peripheral wall 30 and the top wall 32. In another embodiment, the lower half 42 of the peripheral wall 30 may be partially thickened, or the top wall 32 may not be thickened. Strength can be improved.

以上のように構成されたブロック部材１は、二つが互いに上下方向で反転された態様で、複数が上下に積み重ねられる。詳述するに、積層状態では、上下方向に連続する二つのブロック部材１，１は、脚部３、３同士が突き合わされて、一方のブロック部材１の係合突起３６が他方のブロック部材１の係合孔３８に係合することで結合される。また、別の連続する二つのブロック部材１，１では、ベース部１０、１０の下面１６，１６同士が突き合わされる。このとき、それぞれのベース部１０、１０に形成された係合突起と係合孔（いずれも図示省略）との係合により互いに結合される。最終的に、複数のブロック部材１は、縦方向及び横方向に機械的に連結される（又はベース部２の縁部１１同士を突き当てられる）ことで、上下左右前後に連結されて組立てられる。   A plurality of the block members 1 configured as described above are stacked in the vertical direction in such a manner that the two are inverted in the vertical direction. In detail, in the stacked state, the two block members 1, 1 that are continuous in the vertical direction have the legs 3, 3 face each other, and the engagement protrusion 36 of one block member 1 is the other block member 1. By being engaged with the engagement holes 38, the coupling is performed. Further, in the other two consecutive block members 1, 1, the lower surfaces 16, 16 of the base portions 10, 10 are abutted against each other. At this time, they are coupled to each other by the engagement of the engagement protrusions formed on the respective base portions 10 and 10 and the engagement holes (both not shown). Finally, the plurality of block members 1 are mechanically connected in the vertical direction and the horizontal direction (or the edges 11 of the base part 2 are abutted against each other) so that they are connected in the vertical and horizontal directions and assembled. .

ブロック部材１は、フィルム系のポリプロピレン及びポリエチレンを主成分として含む「容リ材」廃プラスチックを主原料として、低圧射出成形法により成形される。通常国内で成形されている手法は、高圧射出成形法であるが、流動性の低いフィルム系の容器包装素材は、適していない。そのため、低圧射出成形法を用いる。廃プラスチックとは、プラスチックを主成分とするリサイクルに供される廃棄物であり、使用後廃棄された各種のプラスチック製品とその製造過程で発生したくずなどの不純物を含むものである。本実施形態に係る「容リ材」廃プラスチックとは、家庭から排出されたものであり、フィルム系のポリプロピレン及びポリエチレンといったオレフィンプラスチック（所謂ミックスオレフィン）を主成分とし、副成分としてこのプラスチックとは異なる不要なプラスチック、木くず、ガラス、鉄くず及び紙くずといった不純物を含むものである。   The block member 1 is molded by a low-pressure injection molding method using a “container” waste plastic mainly containing film-based polypropylene and polyethylene as a main material. Usually, the method molded in Japan is a high-pressure injection molding method, but a film-type container packaging material having low fluidity is not suitable. Therefore, a low pressure injection molding method is used. Waste plastic is waste that is used for recycling mainly composed of plastic, and includes various plastic products discarded after use and impurities such as waste generated in the manufacturing process. The “recycled material” waste plastic according to the present embodiment is discharged from households, and is mainly composed of olefin plastics (so-called mixed olefins) such as film-based polypropylene and polyethylene, and the plastics as subcomponents. It contains impurities such as different unwanted plastics, wood chips, glass, iron scraps and paper scraps.

「容リ材」廃プラスチックが容器リサイクル法に基づき回収されてブロック部材１が製造されるまでの一連の工程を簡単に説明する。先ず、市町村などから提供される一般廃棄物である容器包装物である廃プラスチックから利用可能なポリエチレンとポリプロピレンを選別し、破砕、洗浄、比重分離を行い、加熱溶融し、0.1mm以下のステンレス製のフィルターにより、異物を除去した粒状のプラスチック原料を製造する。次に、このプラスチック原料に相溶化剤（添加剤）などを混練してペレットを製造し、このペレットを成形加工する。これにより、ブロック部材１が成形される。   A series of processes until the block member 1 is manufactured after the waste plastic is collected based on the container recycling method will be briefly described. First, polyethylene and polypropylene that can be used are selected from waste plastics, which are containers and packages provided by municipalities, etc., crushed, washed, separated by specific gravity, heated and melted, and made of stainless steel of 0.1 mm or less. The granular plastic raw material from which the foreign matter has been removed is manufactured using the above filter. Next, the plastic raw material is kneaded with a compatibilizing agent (additive) or the like to produce pellets, and the pellets are molded. Thereby, the block member 1 is shape | molded.

ここで、相溶化剤は、例えば、反応性エチレンコポリマーなどを用いることでプラスチック原料の強度等の物理特性を改善することができ、その中でも、マリコンを用いることが好ましい。また、相溶化剤とプラスチック原料との配合割合は、１:１００〜５:１００の範囲であることが好ましく、その中でも３:１００であることが好ましい。   Here, as the compatibilizing agent, for example, a reactive ethylene copolymer or the like can be used to improve physical properties such as strength of the plastic raw material, and among these, maricon is preferably used. Further, the blending ratio of the compatibilizing agent and the plastic raw material is preferably in the range of 1: 100 to 5: 100, more preferably 3: 100.

以上説明した本実施形態によれば、強度を確保し難い「容リ材」廃プラスチックを用いてブロック部材１を成形しても、脚部３に肉厚の部分（上半部４０及び頂壁３２）を形成しているので、構造上簡易に脚部３の圧縮強度を向上することができる。また、肉厚の部分が脚部３の全体にわたって均一に形成されているのではなく、脚部３に部分的に形成されているので、圧縮強度を確保しつつも、材料コストを低減することができる。加えて、軽量化も図ることができるので、ブロック部材１の運搬効率なども向上するといったメリットがある。   According to the present embodiment described above, even if the block member 1 is molded using “plastic material” waste plastic, which is difficult to ensure strength, a thick portion (the upper half 40 and the top wall) is formed on the leg 3. 32) is formed, the compression strength of the leg 3 can be easily improved in structure. Moreover, since the thick part is not formed uniformly over the entire leg 3, but is formed partially on the leg 3, the material cost can be reduced while ensuring the compressive strength. Can do. In addition, since the weight can be reduced, there is an advantage that the transport efficiency of the block member 1 is improved.

１：ブロック部材、 ２：ベース部、 ３：脚部、 ３０：周壁、 ３２：頂壁、   1: Block member 2: Base part 3: Leg part 30: Peripheral wall 32: Top wall

Claims (4)

フィルム系のポリプロピレン及びポリエチレンを主成分として含む廃プラスチックから成形され、雨水貯留槽に用いられるブロック部材において、
ベース部と、
当該ベース部から上方に突出した筒状の周壁を有する脚部と、を有し、
前記脚部の周壁は、部分的に肉厚に形成されている、ブロック部材。 In block members molded from waste plastics containing polypropylene and polyethylene as main components, and used in rainwater storage tanks,
A base part;
A leg portion having a cylindrical peripheral wall protruding upward from the base portion,
The peripheral wall of the said leg part is a block member currently formed in thickness partially. 前記周壁は、その高さ方向の途中から上端にかけて徐々に肉厚となるように形成されている、請求項１に記載のブロック部材。   The block member according to claim 1, wherein the peripheral wall is formed so as to gradually increase in thickness from the middle in the height direction to the upper end. 前記脚部は、前記周壁の上端に連なる頂壁を有しており、
前記頂壁は、前記周壁の上端部と同程度の肉厚に形成されている、請求項２に記載のブロック部材。 The leg portion has a top wall connected to the upper end of the peripheral wall,
The block member according to claim 2, wherein the top wall is formed to have the same thickness as the upper end portion of the peripheral wall. 当該ブロック部材は、前記廃プラスチックに相溶化剤を添加したものから成形されている、請求項１ないし３のいずれか一項に記載のブロック部材。   The said block member is a block member as described in any one of Claim 1 thru | or 3 shape | molded from what added the compatibilizer to the said waste plastics.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018114038A1 (en) * 2016-12-19 2018-06-28 Rehau Ag + Co Blind drain-semimember
JP2022052882A (en) * 2020-09-24 2022-04-05 株式会社 ジャパックス Recycled film and method for producing recycled film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007016555A (en) * 2005-07-11 2007-01-25 Bridgestone Corp Constituent member for rain water storage infiltration tank and the rain water storage infiltration tank
JP2007112913A (en) * 2005-10-21 2007-05-10 Musashino Kiko Kk Recycled plastic and thick recycled plastic plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007016555A (en) * 2005-07-11 2007-01-25 Bridgestone Corp Constituent member for rain water storage infiltration tank and the rain water storage infiltration tank
JP2007112913A (en) * 2005-10-21 2007-05-10 Musashino Kiko Kk Recycled plastic and thick recycled plastic plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018114038A1 (en) * 2016-12-19 2018-06-28 Rehau Ag + Co Blind drain-semimember
JP2022052882A (en) * 2020-09-24 2022-04-05 株式会社 ジャパックス Recycled film and method for producing recycled film
JP7441515B2 (en) 2020-09-24 2024-03-01 株式会社 ジャパックス Manufacturing method for recycled film

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