JPH073824A - Resin compound for solid fiber aggregate - Google Patents
Resin compound for solid fiber aggregateInfo
- Publication number
- JPH073824A JPH073824A JP5142140A JP14214093A JPH073824A JP H073824 A JPH073824 A JP H073824A JP 5142140 A JP5142140 A JP 5142140A JP 14214093 A JP14214093 A JP 14214093A JP H073824 A JPH073824 A JP H073824A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- solid fiber
- fiber aggregate
- resin compound
- dimensional fiber
- 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
Landscapes
- Retaining Walls (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Nonwoven Fabrics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、暗渠、盛土、擁壁裏込
み等の土木用排水材、ベットや椅子などのクッション部
材などに使用する不規則な空隙を持つ立体繊維集合体を
形成する樹脂組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention forms a three-dimensional fiber aggregate having irregular voids for use as a drainage material for civil engineering such as underdrain, embankment, retaining wall lining, and cushion member such as beds and chairs. The present invention relates to a resin composition.
【０００２】[0002]
【従来の技術】従来より熱可塑性樹脂を使用した立体繊
維集合体を製造する方法は多数提案されている。例えば
溶融状態を呈している糸状をノズルより自然下降させる
とき、その速度より遅く引き取り、しかる後直ちにこれ
を急冷固化させる方法、またこれらの製造方法を基本に
してノズルを振動させる方法、通気性コンベアを設け空
気吸引装置を装着した引き取り機を用いて糸状を相互に
融着させようとする等の方法が挙げられる。2. Description of the Related Art Conventionally, many methods of producing a three-dimensional fiber assembly using a thermoplastic resin have been proposed. For example, when a filament that is in a molten state is naturally descended from the nozzle, it is drawn at a speed slower than that speed, and then it is rapidly cooled and solidified, a method of vibrating the nozzle based on these manufacturing methods, and a breathable conveyor. There is a method in which the filaments are fused with each other by using a take-up machine provided with an air suction device.
【０００３】通常前記方法を実施する際に使用される樹
脂としては、分子量、粘度などが調節された新品の樹脂
を使用するのがほとんどであり、廃棄物、再使用樹脂は
使用されていなかった。一方、使用済製品の樹脂成形品
や製造工程で発生する不良品、屑等は焼却、廃棄されて
いた。Usually, most of the resins used for carrying out the above-mentioned method are new resins whose molecular weight, viscosity, etc. have been adjusted, and neither waste nor reused resins have been used. . On the other hand, resin molded products of used products, defective products and scraps generated in the manufacturing process were incinerated and discarded.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、今まで廃棄
されていた使用済みの樹脂を原料として使用し立体繊維
集合体となし、暗渠、盛土、擁壁裏込み等の土木用排水
材、ベットなどのクッション部材などに使用しても必要
とされる十分な強度、性能、繊維間の接着性を有し、か
つ資源の再利用、環境問題となる廃棄物の低減、コスト
ダウンの推進を図ることのできる組成物を提供すること
を課題とするものである。DISCLOSURE OF THE INVENTION The present invention uses a used resin which has been discarded up to now as a raw material to form a three-dimensional fiber aggregate, and a drainage material for civil engineering such as an underdrain, an embankment, and a retaining wall lining, It has sufficient strength, performance, and adhesiveness between fibers even when used as a cushion member such as a bed, and also reuses resources, reduces waste that causes environmental problems, and promotes cost reduction. It is an object of the present invention to provide a composition that can be achieved.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記課題を解
決するために次の手段を採るものである。すなわち、本
発明は、線条が相互に点接着して空隙を形成してなる立
体繊維集合体用樹脂組成物において、該樹脂組成物がポ
リエステル樹脂を７０重量％含有した再生熱可塑性樹脂
であることを特徴とする立体繊維集合体用樹脂組成物
を、その手段とするものである。The present invention adopts the following means in order to solve the above problems. That is, the present invention provides a resin composition for a three-dimensional fiber assembly in which filaments are point-bonded to each other to form voids, and the resin composition is a recycled thermoplastic resin containing 70% by weight of a polyester resin. The resin composition for a three-dimensional fiber assembly characterized by the above is used as the means.
【０００６】以下に本発明を詳細に説明する。本発明に
おいて、熱可塑性樹脂としては、使用後そのまま廃棄さ
れていた樹脂成形品の再使用可能な樹脂や製造過程にお
いて発生する不良品、屑等の樹脂が好適に使用され、か
つ糸条または線条の多数をノズルより紡出して自然落下
させ、褶曲させる溶融押出において基材となる再生熱可
塑性樹脂として必要とされる強度に耐えうる機械的強度
を持つものであれば何れでも良いが、本発明において
は、７０％以上がポリエステル樹脂を含有することを必
須とし、その他に例えばポリアミド、ポリアクリロニト
リル、ポリオレフィン、ポリ塩化ビニルなどから選ばれ
るホモポリマー又はコポリマーからなる再生熱可塑性樹
脂を含有していてもよい。The present invention will be described in detail below. In the present invention, as the thermoplastic resin, it is preferable to use a reusable resin of a resin molded product that has been discarded as it is after use, a defective product generated in the manufacturing process, a resin such as scrap, and a yarn or a wire. Any of those having a mechanical strength capable of withstanding the strength required as a recycled thermoplastic resin as a base material in melt extrusion in which a large number of strips are spun from a nozzle and spontaneously fall to be folded, In the invention, it is essential that 70% or more contains a polyester resin, and in addition, it contains a regenerated thermoplastic resin composed of a homopolymer or copolymer selected from, for example, polyamide, polyacrylonitrile, polyolefin, polyvinyl chloride and the like. Good.
【０００７】なお、従来では使用後のボトル容器成形
品、生産現場からの不良品などの再生可能な熱可塑性樹
脂は再生のためにポリエステル、ポリエチレン、ポリプ
ロピレン、塩ビ等の各樹脂の種類毎に選別され、粉砕し
て各樹脂の単品として再生使用され、これら選別による
コストアップから新品の樹脂を使用するよりコスト面で
不利になることがあった。本発明ではボトル容器成形品
などの多種類の原料から作られた成形品を選別を行わ
ず、そのまま粉砕して用いることが出来る。ポリエステ
ル樹脂としては一般にボトル容器成形品に用いられるポ
リエチレンテレフタレート、及びポリエチレンテレフタ
レートを主としたポリエステル系共重合体が好ましい。
ポリエステル樹脂が７０ｗｔ％以下になると各樹脂の相
溶性の問題から安定した糸条が得られず強度、空隙率が
変動し排水材としての機能が発揮できない。[0007] Conventionally, recyclable thermoplastic resins such as bottle container molded products after use and defective products from the production site are sorted for each type of resin such as polyester, polyethylene, polypropylene and vinyl chloride for recycling. The resin is then crushed and reused as a single product of each resin, and the cost increase due to these selections may be more disadvantageous in terms of cost than using a new resin. In the present invention, molded products made from various kinds of raw materials such as bottle container molded products can be crushed and used as they are without being sorted. As the polyester resin, polyethylene terephthalate, which is generally used for molded bottle containers, and a polyester copolymer mainly composed of polyethylene terephthalate are preferable.
When the content of the polyester resin is 70 wt% or less, a stable yarn cannot be obtained due to the compatibility problem of each resin, and the strength and the porosity vary, and the function as a drainage material cannot be exhibited.
【０００８】本発明において用いられる使用済のボトル
容器成形品は洗浄後、そのまま粉砕機で小片化したもの
で押出機に投入でき、スクリューに噛み込みが可能なサ
イズになった物が好ましい。場合により粉砕機と押出機
を直結したものなど押出機の投入口で各樹脂が偏析しな
いようにすればよい。また、立体繊維集合体の性質を損
なわない程度に繊維補強材、充填材、着色剤、安定剤、
結晶化促進剤その他各種剤を適時配合してもよい。The used bottle container molded product used in the present invention is preferably a product which has been crushed into small pieces after being washed and can be put into an extruder so that it can be bitten into a screw. In some cases, each resin may be prevented from being segregated at the charging port of the extruder such as a machine in which the crusher and the extruder are directly connected. Further, fiber reinforcement, filler, coloring agent, stabilizer,
You may mix | blend a crystallization accelerator and other various agents at appropriate times.
【０００９】本発明の立体繊維集合体組成物より立体繊
維集合体を形成する方法としては、前記粉砕した樹脂を
ドライブレンドし押出機に直接供給し、押出機により溶
融混合し、糸条または線条の多数をノズルより紡出する
方法、又はこれらの樹脂をドライブレンドした後押出機
により溶融混合しペレットを作成した後、これを用いて
糸条または線条の多数をノズルより紡出する方法により
自然落下させ褶曲させて溶融押出を行なう方法等が挙げ
られる。A method for forming a three-dimensional fiber aggregate from the three-dimensional fiber aggregate composition of the present invention is to dry-blend the crushed resin, directly feed it to an extruder, melt-mix with the extruder, and form a yarn or wire. A method of spinning a large number of filaments from a nozzle, or a method of dry-blending these resins, melt-mixing them with an extruder to prepare pellets, and then spinning a large number of filaments or filaments from this using these And a method of melt-extruding by allowing it to naturally fold and bend.
【００１０】[0010]
【作用】本発明は、立体繊維集合体の基材となる再生熱
可塑性樹脂組成物としてポリエステル樹脂を７０重量％
以上含有することにより、再生熱可塑性樹脂の溶融粘度
が上昇し糸条または線条の多数をノズルより紡出して自
然落下させ、褶曲させる溶融押出性が改善され、糸条ま
たは線条の相互の点接着が向上し、圧縮時の強度、歪
み、回復各特性に優れた立体繊維集合体が得られるが、
その理由は明らかではない。According to the present invention, 70% by weight of a polyester resin is used as a recycled thermoplastic resin composition as a base material for a three-dimensional fiber assembly.
By containing the above, the melt viscosity of the recycled thermoplastic resin is increased, and a large number of yarns or filaments are spun from the nozzle and spontaneously dropped, and the melt extrudability for folding is improved. Although the point adhesion is improved, a three-dimensional fiber aggregate having excellent strength, strain, and recovery characteristics upon compression can be obtained.
The reason is not clear.
【００１１】[0011]
【実施例】以下、実施例を用いて本発明を具体的に説明
するが、本発明はこれらによって限定されるものではな
い。なお、諸物性の測定法は下記の通りである。 圧縮強度 ＪＩＳ Ｋ７２０８−１９７５で測定し、圧縮強度を歪
率２０％のときの値で求める。 圧縮残留歪率 立体繊維集合体の圧縮強度の測定時に最初の試料の厚み
に対して１／２の歪量になるまで荷重をかけ、その後荷
重をはずすことを５回繰り返した後、３時間後に試料の
厚みを測定し、次の式により圧縮残留歪率を算出する。
圧縮残留歪率＝試験後の試料の厚さ（ｍｍ）／最初の試
料の厚さ（ｍｍ）EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited thereto. The methods for measuring various physical properties are as follows. Compressive strength Measured according to JIS K7208-1975, and the compressive strength is obtained as a value when the strain rate is 20%. Compressive residual strain rate When measuring the compressive strength of a three-dimensional fiber assembly, a load was applied until the strain amount became 1/2 of the thickness of the first sample, and then the load was removed 5 times, and then 3 hours later. The thickness of the sample is measured, and the compression residual strain rate is calculated by the following formula.
Compressive residual strain rate = thickness of sample after test (mm) / thickness of first sample (mm)
【００１２】なお、立体繊維集合体の作成は、次の処方
で行なった。スクリュー径５０ｍｍの単軸押出機にてシ
リンダー温度を２７５℃に設定し、内径１ｍｍよりなる
５０穴のノズル群から毎時３０Ｋｇの吐出量にて紡出
し、このノズル面より３０ｃｍ下方に冷却水を配すると
ともに同冷却水中に一対の引き取り用コンベアーを設置
し、これを毎分０．８ｍの速度で水中に引き取り、厚さ
３ｃｍ幅２０ｃｍの立体繊維集合体を得る。The three-dimensional fiber aggregate was prepared according to the following formulation. The cylinder temperature was set to 275 ° C. with a single screw extruder with a screw diameter of 50 mm, spinning was performed from a nozzle group of 50 holes with an inner diameter of 1 mm at a discharge rate of 30 kg per hour, and cooling water was distributed 30 cm below the nozzle surface. At the same time, a pair of take-up conveyors are installed in the cooling water, and the take-up conveyors are taken into water at a speed of 0.8 m / min to obtain a three-dimensional fiber aggregate having a thickness of 3 cm and a width of 20 cm.
【００１３】実施例１ ポリエチレンテレフタレート（以下ＰＥＴという）製飲
料水用容器の使用後に回収し、粉砕した再生用樹脂（Ｐ
ＥＴ７２重量％、ポリエチレン２６重量％、塩化ビニー
ル２重量％含有）を用いて上述の製造条件において立体
繊維集合体を作成した。得られた立体繊維集合体の圧縮
特性を測定した結果を表１に示す。Example 1 A recycled resin (P) recovered and crushed after using a container for drinking water made of polyethylene terephthalate (hereinafter referred to as PET)
72% by weight of ET, 26% by weight of polyethylene, and 2% by weight of vinyl chloride were used) to prepare a three-dimensional fiber assembly under the above-mentioned manufacturing conditions. The results of measuring the compression characteristics of the obtained three-dimensional fiber assembly are shown in Table 1.
【００１４】実施例２ 実施例１において再生用樹脂として、ポリエステル系共
重合物８５重量％およびポリエチレン１５重量％からな
る組成物を用いた以外は全て実施例１と同様にして立体
繊維集合体を作成した。その結果を表１に示す。Example 2 A three-dimensional fiber assembly was prepared in the same manner as in Example 1 except that a composition comprising 85% by weight of a polyester copolymer and 15% by weight of polyethylene was used as a regenerating resin in Example 1. Created. The results are shown in Table 1.
【００１５】比較例１ 実施例１において再生用樹脂として、ＰＥＴ６０重量
％、ポリエチレン３７重量％および塩化ビニール３重量
％からなる組成物を用いた以外は全て実施例１と同様に
して立体繊維集合体を作成した。その結果を表１に示
す。Comparative Example 1 A three-dimensional fiber assembly was prepared in the same manner as in Example 1 except that the composition of 60% by weight of PET, 37% by weight of polyethylene and 3% by weight of vinyl chloride was used as the regenerating resin in Example 1. It was created. The results are shown in Table 1.
【００１６】[0016]
【表１】 表１より明らかなように、本発明組成物より得られた立
体繊維集合体は圧縮強度が高く、また圧縮残留歪率も大
きな値を示し回復性に優れていることが判る。[Table 1] As is clear from Table 1, the three-dimensional fiber assembly obtained from the composition of the present invention has a high compressive strength and a large compressive residual strain rate, indicating excellent recovery.
【００１７】[0017]
【発明の効果】本発明の再生樹脂を利用した立体繊維集
合体は上記のような構成を有しており、圧縮強度が高
く、圧縮在留歪率も大きくへたりにくいため、暗渠、盛
土、擁壁裏込み等の土木用排水材、ベットなどのクッシ
ョン部材などに好適であり、いままで使用できずに廃棄
していた使用後の成形品、不良品などの樹脂を再利用
し、環境、資源問題の解決に役立つことができる。EFFECTS OF THE INVENTION The three-dimensional fiber assembly using the recycled resin of the present invention has the constitution as described above, has a high compressive strength, and has a large compressive residual strain rate, which makes it difficult to settle. It is suitable as a drainage material for civil engineering such as wall lining, a cushion member such as a bed, etc., and reuses the resin such as used molded products and defective products that could not be used until now, environment, resources Can help solve problems.
Claims (1)
なる立体繊維集合体用樹脂組成物において、該樹脂組成
物がポリエステル樹脂を７０重量％含有した再生熱可塑
性樹脂であることを特徴とする立体繊維集合体用樹脂組
成物。1. A resin composition for a three-dimensional fiber assembly in which filaments are point-bonded to each other to form voids, and the resin composition is a regenerated thermoplastic resin containing 70% by weight of a polyester resin. A resin composition for a three-dimensional fiber assembly, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5142140A JPH073824A (en) | 1993-06-14 | 1993-06-14 | Resin compound for solid fiber aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5142140A JPH073824A (en) | 1993-06-14 | 1993-06-14 | Resin compound for solid fiber aggregate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH073824A true JPH073824A (en) | 1995-01-06 |
Family
ID=15308301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5142140A Pending JPH073824A (en) | 1993-06-14 | 1993-06-14 | Resin compound for solid fiber aggregate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073824A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7625629B2 (en) | 2000-03-15 | 2009-12-01 | C-Eng Co., Ltd. | Three-dimensional net-like structure, and method and device for producing three dimensional net-like structure |
| US8226882B2 (en) | 2000-03-15 | 2012-07-24 | C-Eng Co., Ltd. | Apparatus and method for manufacturing three-dimensional netted structure |
| US8757996B2 (en) | 2000-03-15 | 2014-06-24 | C-Eng Co., Ltd. | Apparatus and method for manufacturing three-dimensional netted structure |
-
1993
- 1993-06-14 JP JP5142140A patent/JPH073824A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7625629B2 (en) | 2000-03-15 | 2009-12-01 | C-Eng Co., Ltd. | Three-dimensional net-like structure, and method and device for producing three dimensional net-like structure |
| US7993734B2 (en) | 2000-03-15 | 2011-08-09 | C-Eng Co., Ltd. | Three-dimensional net-like structure, and method and device for producing three-dimensional net-like structure |
| US8226882B2 (en) | 2000-03-15 | 2012-07-24 | C-Eng Co., Ltd. | Apparatus and method for manufacturing three-dimensional netted structure |
| US8563121B2 (en) | 2000-03-15 | 2013-10-22 | C-Eng Co., Ltd. | Three-dimensional netted structure having four molded surfaces |
| US8757996B2 (en) | 2000-03-15 | 2014-06-24 | C-Eng Co., Ltd. | Apparatus and method for manufacturing three-dimensional netted structure |
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