JPH0524319U - Thermoplastic resin foam volume reduction device - Google Patents
Thermoplastic resin foam volume reduction deviceInfo
- Publication number
- JPH0524319U JPH0524319U JP7883891U JP7883891U JPH0524319U JP H0524319 U JPH0524319 U JP H0524319U JP 7883891 U JP7883891 U JP 7883891U JP 7883891 U JP7883891 U JP 7883891U JP H0524319 U JPH0524319 U JP H0524319U
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- foam
- resin foam
- pressure plate
- volume
- 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
Classifications
-
- 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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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
(57)【要約】
【目的】 構造が単純であり装置自体の小型化が可能で
あり、発泡体の減容化処理速度が速く、特にトレイ等の
比較的低密度の発泡体の処理にも適した熱可塑性樹脂発
泡体の減容化装置を提供する。
【構成】 2枚の相対向する圧力盤2、3の間に載置し
た熱可塑性樹脂発泡体4を圧縮して該熱可塑性樹脂発泡
体4の容積を減少させる装置であって、上記圧力板2、
3を加熱するための熱板10が設けられ、少なくとも一
方の圧力板が熱可塑性樹脂発泡体4を加熱しつつ加圧し
て圧縮するための加圧装置5を備える。
(57) [Abstract] [Purpose] The structure is simple and the device itself can be downsized, and the volume reduction processing speed of the foam is fast. A suitable thermoplastic resin foam volume reducing device is provided. A device for compressing a thermoplastic resin foam 4 placed between two pressure plates 2 and 3 facing each other to reduce the volume of the thermoplastic resin foam 4, the pressure plate 2,
A heating plate 10 for heating 3 is provided, and at least one pressure plate is provided with a pressing device 5 for pressing and compressing the thermoplastic resin foam 4 while heating.
Description
【0001】[0001]
本考案は、熱可塑性樹脂発泡体の容積を減少させるための減容化装置に関する 。 The present invention relates to a volume reducing device for reducing the volume of a thermoplastic resin foam.
【0002】[0002]
昨今、食品包装用等に使用されるトレイや、緩衝材等に熱可塑性樹脂発泡体が 広く用いられているが、資源の有効利用等の面からこれらの発泡体を回収して、 溶融再利用することが要望されている。 熱可塑性樹脂発泡体を再利用するためのシステムとしては、例えばスーパーマ ーケット等のトレイ等を使用した商品を販売している場所を回収ステーションと して、使用済のトレイ等を消費者から回収し、消費者が積極的に回収ステーショ ンに持ちより、上記の如き各回収ステーションに集められた使用済のトレイ等は 、種々のプラスチックの選別、破砕、洗浄、乾燥等の設備を備えた大型のプラス チック溶融再生装置等が設置された再処理センターに運ばれて、集中的に溶融再 生処理される方式が、より回収効率を上げるための手段として提案されている。 ところで、回収ステーションで回収した発泡体を処理センターへ運ぶ場合、発 泡体は密度が低く非常に嵩高いため運搬コストが高くついてしまうという問題が あった。そこで、回収ステーション等で予め発泡体の容積を減らし(減容し)運 搬コストを下げることが重要であり、そのための発泡体減容装置を回収ステーシ ョン等に設置する必要がある。 この発泡体の減容に用いられる従来の減容装置として、一般的なプラスチック 再処理用の装置は知られており、例えば加熱空気等を循環させた容器内にプラ スチックを入れ、加熱溶融して減容する装置や、押出し機のように容器の壁を 加熱しておいて、伝導熱により溶融させて押し出す装置等が公知である。 Recently, thermoplastic resin foams are widely used in trays used for food packaging, cushioning materials, etc., but these foams are recovered and melted and reused from the viewpoint of effective use of resources. Is required to do so. As a system for reusing thermoplastic resin foams, for example, a collection station is a place that sells products that use trays such as supermarkets, and used trays are collected from consumers. However, the used trays, etc., collected at each collection station as described above when the consumer is actively in the collection station, are large-scale equipment equipped with various plastic sorting, crushing, washing, and drying facilities. A method of carrying out intensive melt regeneration treatment by being transported to a reprocessing center equipped with a plastic melting regenerator, etc. has been proposed as a means for further increasing recovery efficiency. By the way, when the foam collected at the collection station is transported to the processing center, there is a problem in that the foam has a low density and is very bulky, which causes a high transportation cost. Therefore, it is important to reduce the volume of the foam (reduce volume) in advance at the collection station etc. to reduce the transportation cost, and it is necessary to install a foam volume reduction device for that at the collection station. As a conventional volume reducing device used for reducing the volume of this foam, a general plastic reprocessing device is known. For example, a plastic is placed in a container in which heated air or the like is circulated and heated and melted. There is known a device for reducing the volume, a device for heating the wall of the container like an extruder and extruding it by melting it by conduction heat.
【0003】[0003]
しかし、従来の装置で熱可塑性樹脂発泡体を減容化処理しようとすると、の 装置を使用した場合、発泡体と加熱体との熱伝導が悪く加熱気体の熱容量が小さ いため、特に食品用トレイのように比較的低発泡倍率で重なり易い形状の発泡体 では、効率が低下するため大きな熱容量が必要となり、装置自体が大型になって しまう欠点があった。 又上記の押出方式の装置の場合、発泡体を溶融させるためには加熱体との接 触面積を大きくとる必要があり、押出装置の内部に発泡体を送るために処理しよ うとする発泡体を微細に切断しなければならず、粉砕装置が必要で装置が複雑に なってしまい、処理に時間がかかる問題があった。 このように、従来の一般的なプラスチック用の減容化装置は熱可塑性樹脂発泡 体の減容化装置として不十分なものであり、改良の余地を残すものであった。 本考案装置は上記問題点を解決するためのものであり、構造が単純であり装置 自体の小型化が可能であり、発泡体の減容化処理速度が速く、特に食品用トレイ 等の比較的低発泡倍率(発泡倍率20倍以下)の発泡体の処理にも適した減容化 装置を提供しようとするものである。 However, when attempting to reduce the volume of thermoplastic resin foam using conventional equipment, when the equipment of is used, the heat conduction between the foam and the heating body is poor and the heat capacity of the heated gas is small, so especially for food trays. In the case of a foam having a relatively low expansion ratio and being easily overlapped with each other as described above, there is a drawback in that the efficiency itself is lowered and a large heat capacity is required, and the apparatus itself becomes large. Further, in the case of the above-mentioned extrusion type apparatus, it is necessary to make a large contact area with the heating body in order to melt the foam, and the foam to be treated in order to send the foam to the inside of the extruder. However, there is a problem in that it requires a crushing device, which complicates the device and requires a long processing time. As described above, the conventional general volume-reducing device for plastics is insufficient as a volume-reducing device for thermoplastic resin foam, and there is room for improvement. The device of the present invention is to solve the above problems, and has a simple structure, allows the device itself to be miniaturized, and has a high volume reduction processing speed of the foam, especially for food trays and the like. An object of the present invention is to provide a volume reducing device suitable for treating foams having a low expansion ratio (expansion ratio of 20 times or less).
【0004】[0004]
本考案熱可塑性樹脂発泡体の減容化装置は、2枚の相対向する圧力板の間に載 置した熱可塑性樹脂発泡体を圧縮して該熱可塑性樹脂発泡体の容積を減少させる 装置であって、上記圧力板を加熱するための加熱装置を備え、少なくとも一方の 圧力板が熱可塑性樹脂発泡体を加熱しつつ加圧して圧縮するための加圧装置を備 えていることを特徴とするものである。 又、上記装置において、少なくとも一方の圧力板の表面に、溶融した熱可塑性 樹脂発泡体を外部に排出するための溝もしくは凹部を形成してもよい。 The thermoplastic resin foam volume-reducing device of the present invention is a device for compressing a thermoplastic resin foam placed between two opposing pressure plates to reduce the volume of the thermoplastic resin foam. A heating device for heating the pressure plate, wherein at least one of the pressure plates is provided with a pressurizing device for pressurizing and compressing the thermoplastic resin foam while heating. is there. Further, in the above apparatus, a groove or a recess for discharging the melted thermoplastic resin foam to the outside may be formed on the surface of at least one of the pressure plates.
【0005】[0005]
以下、本考案装置の作用について説明する。移動圧力板2と固定圧力板3は熱 板10により加熱され、移動圧力板2が加圧装置5により移動すると圧力板2、 3の間に載置された熱可塑性樹脂発泡体4は、圧力板2、3に強く押しつけられ て密着して加熱されるため接触と同時に樹脂の溶融が起こり、圧力により次々に 未溶融の発泡体4の表面に圧力板2、3の表面が接触して、短時間に発泡体の溶 融が起こり減容化される。尚、発泡体の内部に含まれる気泡や発泡体間の間隙に あった空気は側面から外部に抜ける。 又、圧力板の表面に溝又は凹部を設けた場合には、溶融した発泡体樹脂が溝又 は凹部から外部に排出される。 The operation of the device of the present invention will be described below. The moving pressure plate 2 and the fixed pressure plate 3 are heated by the heating plate 10, and when the moving pressure plate 2 is moved by the pressurizing device 5, the thermoplastic resin foam 4 placed between the pressure plates 2 and 3 is pressed. Since the resin is melted at the same time as it is contacted because it is strongly pressed against the plates 2 and 3 and is heated closely, the surfaces of the pressure plates 2 and 3 come into contact with the surfaces of the unmelted foam 4 one after another due to the pressure. The foam melts in a short time and the volume is reduced. Bubbles contained in the foam and air in the gaps between the foams escape to the outside from the side surfaces. Further, when a groove or a recess is provided on the surface of the pressure plate, the molten foam resin is discharged from the groove or the recess to the outside.
【0006】[0006]
以下、本考案の実施例を図面に基づき詳細に説明する。図面は本考案の1実施 例を示すものであり、図1は本考案熱可塑性樹脂発泡体の減容化装置の一例を示 す断面図である。 本考案熱可塑性樹脂発泡体の減容化装置1は図1に示すように、移動圧力板2 及び固定圧力板3の2枚の相対向する圧力板の間に載置した熱可塑性樹脂発泡体 4を圧縮して該発泡体4の容積を減少させるための装置であって、上記移動圧力 板2及び固定圧力板3の裏面側(熱可塑性樹脂発泡体4と接触しない面)に圧力 板2、3を加熱するための熱板10を備え、熱可塑性樹脂発泡体4を移動圧力板 2で加熱しつつ加圧するための油圧駆動の加圧装置5が、移動圧力板2に接続さ れている。 尚、本考案では、圧力板を加圧する加圧装置は少なくとも一方の圧力板が移動 するように設けられていればよいが、2枚の圧力板が移動して熱可塑性樹脂発泡 体を加圧するように2枚の圧力板に加圧装置を設けて構成してもよい。加圧装置 5は油圧により駆動する装置を示したが、加圧装置5の駆動は油圧に限定されず 、空気圧、機械的な駆動による加圧装置等いずれの方式でも良い。 又、上記熱板10には内部に加熱用ヒーターが埋込まれているが、冷却水を循 環させたパイプを上記加熱用ヒーターと交互に配置して埋込み、冷却可能に形成 するのが好ましい。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention, and FIG. 1 is a sectional view showing an example of a volume reducing device for thermoplastic resin foam of the present invention. As shown in FIG. 1, the device 1 for reducing the volume of a thermoplastic resin foam according to the present invention includes a thermoplastic resin foam 4 mounted between two pressure plates, a moving pressure plate 2 and a fixed pressure plate 3, which face each other. A device for compressing to reduce the volume of the foam body 4, which comprises pressure plates 2, 3 on the back side of the moving pressure plate 2 and the fixed pressure plate 3 (the surface not in contact with the thermoplastic resin foam body 4). A hydraulic drive pressurizing device 5 for heating the thermoplastic resin foam 4 while heating it with the moving pressure plate 2 is connected to the moving pressure plate 2. In the present invention, the pressurizing device for pressurizing the pressure plates may be provided so that at least one of the pressure plates moves, but the two pressure plates move to press the thermoplastic resin foam. As described above, the pressure device may be provided on the two pressure plates. Although the pressurizing device 5 is shown as a device driven by hydraulic pressure, the drive of the pressurizing device 5 is not limited to hydraulic pressure, and any method such as pneumatic pressure or a pressurizing device by mechanical drive may be used. Further, although a heating heater is embedded in the hot plate 10, it is preferable that a pipe in which cooling water is circulated is alternately arranged with the heating heater to be embedded so as to be cooled. ..
【0007】 図1に示す装置には更に2枚の相対向する圧力板2、3が設けられている部分 が圧縮室6として周囲を覆った状態に形成され、該圧縮室6の下端側に減容化し た発泡体4を取り出すための押出棒7を設け、圧縮室6の下端の押出棒7の他端 側には減容した発泡体を受けるためのバット8を設け、圧縮室6の側面に処理し ようとする熱可塑性樹脂発泡体4を供給するためのホッパー9を接続することも できる。 圧縮室6は外部に開放した状態でもよいが、圧縮室6の周囲を覆った場合には 、加熱空気等の加熱気体を供給する加熱装置を設けて圧縮室の内部を加熱雰囲気 下とすることが可能であり、圧縮室6内部の発泡体を加熱して減容化の処理速度 を更に向上させることができる。 又、熱板10の裏面側(圧力板の反対面)には断熱材15が設けられ、移動圧 力板2のホッパー9側には仕切り12が設けられ、該仕切り12は移動圧力板2 の移動と共に慴動してホッパー9と圧縮室6の間を開閉するように形成されてい る。In the apparatus shown in FIG. 1, a portion where two pressure plates 2 and 3 facing each other are further formed as a compression chamber 6 so as to cover the surroundings, and the lower end side of the compression chamber 6 is formed. An extruding rod 7 for taking out the reduced volume foam 4 is provided, and a butt 8 for receiving the reduced volume foam is provided at the other end of the extruding rod 7 at the lower end of the compression chamber 6 A hopper 9 for supplying the thermoplastic resin foam 4 to be treated can be connected to the side surface. The compression chamber 6 may be open to the outside, but when the circumference of the compression chamber 6 is covered, a heating device for supplying heating gas such as heating air should be provided to keep the inside of the compression chamber in a heated atmosphere. It is possible to heat the foam inside the compression chamber 6 to further improve the processing speed for volume reduction. Further, a heat insulating material 15 is provided on the back surface side (opposite surface of the pressure plate) of the heat plate 10, and a partition 12 is provided on the hopper 9 side of the moving pressure plate 2, and the partition 12 of the moving pressure plate 2 is provided. The hopper 9 and the compression chamber 6 are opened and closed by moving along with the movement.
【0008】 本考案熱可塑性樹脂発泡体の減容化装置1において重要なことは、圧力板2、 3が加熱装置を備え、熱可塑製樹脂発泡体4が加熱された圧力板により加圧され て圧縮するように形成されていることである。 上記移動圧力板2及び固定圧力板3は、熱可塑性樹脂を加熱して圧縮可能なも のであれば材質形状等何れでもよいが、通常材質はアルミニウム、鉄、ステンレ ス等の金属盤が用いられ、形状は円形や四角形等の板が用いられる。What is important in the thermoplastic resin foam volume reducing device 1 of the present invention is that the pressure plates 2 and 3 are provided with a heating device, and the thermoplastic resin foam 4 is pressurized by the heated pressure plate. It is formed so as to compress. The moving pressure plate 2 and the fixed pressure plate 3 may be of any material shape as long as they are capable of heating and compressing a thermoplastic resin, but usually a metal plate such as aluminum, iron or stainless steel is used. A plate having a circular shape or a square shape is used.
【0009】 図2は本発明減容化装置に用いられる圧力板の他の例を示す断面図である。移 動圧力板は例えば、図2に示すように固定圧力板3の表面に溶融した熱可塑性樹 脂発泡体を外部に排出するための溝11を圧力板の中央付近に設けることもでき る。又、図2に示すように圧力板を金型31(又は21)と支持板32(又は2 2)とから形成し、金型31に溝11を設けてもよい。又、固定圧力板3の表面 を溝11に向けて傾斜するように形成し、移動圧力板2の金型21の形状を固定 圧力板3の金型31の形状と対応するように形成して、減容化した熱可塑性樹脂 発泡体を溶融樹脂の状態で、溝11を通して外部に排出させるように形成するこ ともできる。FIG. 2 is a cross-sectional view showing another example of the pressure plate used in the volume reducing device of the present invention. For example, as shown in FIG. 2, the moving pressure plate may be provided with a groove 11 on the surface of the fixed pressure plate 3 near the center of the pressure plate for discharging the molten thermoplastic resin foam to the outside. Further, as shown in FIG. 2, the pressure plate may be formed of the mold 31 (or 21) and the support plate 32 (or 22), and the groove 31 may be provided in the mold 31. Further, the surface of the fixed pressure plate 3 is formed so as to be inclined toward the groove 11, and the shape of the mold 21 of the moving pressure plate 2 is formed so as to correspond to the shape of the mold 31 of the fixed pressure plate 3. It is also possible to form the volume-reduced thermoplastic resin foam in a molten resin state so as to be discharged to the outside through the groove 11.
【0010】 移動圧力板2及び固定圧力板3の表面(発泡体4と接触する側)は、フッソ樹 脂等のような発泡体4に対して離型性の高い材質を用いて被覆しておくことが好 ましい。圧力板の表面をこのように被覆しておくことで、圧力板からの樹脂の剥 離を容易にすることができる。又、圧力板には冷却装置を設けてもよく、圧力板 の冷却を容易にし、減容した樹脂を圧力板から直ぐに剥離して外部に排出するこ とができるために、次の減容化処理までの時間を短縮して処理速度を向上させる ことがてきる。The surfaces of the moving pressure plate 2 and the fixed pressure plate 3 (the side in contact with the foam 4) are covered with a material having a high releasability with respect to the foam 4 such as fluorine resin. It is preferable to leave it. By coating the surface of the pressure plate in this manner, the resin can be easily peeled from the pressure plate. Further, a cooling device may be provided on the pressure plate, which facilitates cooling of the pressure plate and allows the volume-reduced resin to be immediately separated from the pressure plate and discharged to the outside. It is possible to shorten the processing time and improve the processing speed.
【0011】 本考案装置は、処理を行う熱可塑性樹脂発泡体の樹脂の種類に応じ圧力板の温 度を適宜選定することができるように、加熱装置に温度調節装置を設けることが 好ましい。圧縮盤の温度は熱可塑性樹脂の溶融温度以上で分解温度以下の範囲と することが好ましく、例えばスチレン系樹脂ならば、100〜300℃、好まし くは130〜250℃、ポリエチレン系樹脂の場合100〜300℃、好ましく は130〜250℃、又ポリプロピレン系樹脂ならば150〜350℃、好まし くは170〜300℃程度で処理するのが適当である。 又、本考案装置で処理される熱可塑性樹脂発泡体4は特に限定されずいかなる 種類、形状のものでもよいが、特にポリスチレン、ポリエチレン、ポリプロピレ ン系樹脂発泡体の食品用トレイ等のような発泡倍率20倍以下の比較的低発泡の もので、重なり易い形状の発泡体に特に良好な処理を行うことができる。In the device of the present invention, the heating device is preferably provided with a temperature adjusting device so that the temperature of the pressure plate can be appropriately selected according to the type of resin of the thermoplastic resin foam to be treated. The temperature of the compression platen is preferably in the range above the melting temperature of the thermoplastic resin and below the decomposition temperature. For example, 100-300 ° C, preferably 130-250 ° C for styrene resin, and polyethylene resin for polyethylene resin. It is suitable to carry out the treatment at 100 to 300 ° C., preferably 130 to 250 ° C., and for polypropylene resin, 150 to 350 ° C., preferably 170 to 300 ° C. Further, the thermoplastic resin foam 4 to be treated by the device of the present invention is not particularly limited and may be of any type and shape, but especially foam such as a tray for food of polystyrene, polyethylene or polypropylene resin foam. With a relatively low foaming ratio of 20 times or less, it is possible to perform particularly good treatment on foams having a shape that easily overlaps.
【0012】 図3は本考案熱可塑性樹脂発泡体の減容化装置の他の例を示す断面図である。 本考案装置は図3に示すように移動圧力板2を水平方向に慴動させて、発泡体 を水平に加圧して圧縮する構成の装置(横型装置)としてもよい。図3に示す横 型の減容化装置は移動圧力板2と固定圧力板3の2枚の圧力板が圧縮室6に設け られ、圧力板には熱盤10が設けられ移動圧力板2には加圧装置5を備え、圧縮 室6の上部にはホッパー9が設けられ、仕切り12が移動圧力板2の移動と共に 慴動してホッパー9と圧縮室6を仕切るように形成されている。FIG. 3 is a cross-sectional view showing another example of the volume reducing device for thermoplastic resin foam of the present invention. The device of the present invention may be a device (horizontal device) configured to horizontally move the moving pressure plate 2 as shown in FIG. 3 to horizontally pressurize and compress the foam. In the horizontal type volume reduction device shown in FIG. 3, two pressure plates, a moving pressure plate 2 and a fixed pressure plate 3, are provided in the compression chamber 6, and a heating plate 10 is provided on the pressure plate. Is provided with a pressurizing device 5, and a hopper 9 is provided above the compression chamber 6, and a partition 12 is formed so as to move along with the movement of the moving pressure plate 2 to partition the hopper 9 and the compression chamber 6.
【0013】 図3に示す減容装置1は、図1に示した装置が圧力板が上下に垂直方向に慴動 して、発泡体を垂直に加圧して圧縮する装置(縦型装置)であるのに対し、移動 圧力板3の慴動方向が垂直方向から水平方向になる。 横型装置の圧力板の加熱及び加圧による圧縮の効果は図1に示す装置と同様の 機能を有しているが、熱可塑性樹脂発泡体の供給と減容化した発泡体の取り出し (排出)という点が異なっている。横型装置の場合には図3に示すように、熱可 塑性樹脂発泡体3を直接圧縮室6の上部に設けたホッパー9から供給して、該圧 縮室6の上部の押出棒7を用いて圧縮室6の下側に設けた取り出し口14からバ ット8に排出するように形成されている。The volume reducing device 1 shown in FIG. 3 is a device (vertical device) in which the pressure plate is vertically slid vertically to compress the foam by vertically pressing it. On the other hand, the sliding direction of the moving pressure plate 3 changes from the vertical direction to the horizontal direction. The effect of compression by heating and pressurization of the pressure plate of the horizontal type device has the same function as that of the device shown in Fig. 1, but the supply of the thermoplastic resin foam and the removal (discharge) of the volume-reduced foam That is different. In the case of the horizontal type device, as shown in FIG. 3, the thermoplastic resin foam 3 is directly supplied from the hopper 9 provided on the upper part of the compression chamber 6, and the extrusion rod 7 on the upper part of the compression chamber 6 is used. The discharge port 14 provided on the lower side of the compression chamber 6 discharges it to the butt 8.
【0014】 上記図1に示す本考案の減容化装置を用いて実際に熱可塑性樹脂発泡体を減容 化する場合の一例を、発泡倍率13倍の発泡ポリスチレン製の食品用トレイを例 に説明する。 先ず、ホッパー9の上から回収した発泡体4を投入しておき、上下の圧力板2 、3を接触させた状態(加熱効率を上げるため)で圧力板を170℃〜180℃ 程度に加熱した後、移動圧力板2を所定の位置まで上昇させ、ホッパー9と圧縮 室6の仕切り12を開いて、発泡体4を圧縮室6の内部に導入し2枚の圧力板2 、3の間に載置する。 次いで、移動圧力板2を所定の速度で移動させ発泡体4を加熱しながら加圧し て圧縮し(圧縮中は圧力が低いが発泡体内部の気泡が抜けて、発泡体が完全に溶 融すると油圧は上昇する)、所定の位置で移動圧力板2を止める。 最後に押出棒7を用いて固定圧力板3に付着した溶融樹脂を外部のバット8に 押し出して減容化した熱可塑性樹脂発泡体を得て処理が終了する。An example of actually reducing the volume of a thermoplastic resin foam using the volume reducing device of the present invention shown in FIG. 1 will be described with a food tray made of expanded polystyrene having an expansion ratio of 13 times as an example. explain. First, the foamed body 4 collected from the top of the hopper 9 is put in, and the pressure plates are heated to about 170 to 180 ° C. with the upper and lower pressure plates 2 and 3 in contact with each other (to increase heating efficiency). After that, the moving pressure plate 2 is raised to a predetermined position, the hopper 9 and the partition 12 of the compression chamber 6 are opened, the foam 4 is introduced into the compression chamber 6, and the pressure plate 2 is placed between the two pressure plates 2, 3. Place it. Next, the moving pressure plate 2 is moved at a predetermined speed to pressurize and compress the foam 4 while heating (when the pressure is low, air bubbles inside the foam escape and the foam completely melts). The hydraulic pressure rises), and the moving pressure plate 2 is stopped at a predetermined position. Finally, the extruded rod 7 is used to extrude the molten resin adhering to the fixed pressure plate 3 to the external vat 8 to obtain a volume-reduced thermoplastic resin foam, and the processing is completed.
【0015】 本考案装置1に発泡体を投入する場合、図3に示すように発泡体4を予め圧縮 室内部に入る大きさのポリエチレンの袋13に発泡体を充填しておいて、袋ごと ホッパー9から発泡体を投入して圧縮室6の内部に載置して圧力板で加圧して減 容化してもよい。When the foam is put into the device 1 of the present invention, as shown in FIG. 3, the foam 4 is preliminarily filled in a polyethylene bag 13 of a size to be put in the compression chamber, and the bag is packed together with the bag. The foam may be charged from the hopper 9 and placed inside the compression chamber 6 and pressurized by a pressure plate to reduce the volume.
【0016】 本考案減容装置は大きさ等特に限定されないが、食品包装用トレイが処理でき る程度の大きさの小型、低価格のものとして構成すれば、回収した熱可塑性樹脂 発泡体製のトレイの運搬コストを減らすために、スーパーマーケット等に設置し て減容化するための装置として最適に用いられる。The volume-reducing device of the present invention is not particularly limited in size, but if it is configured as a small-sized and low-priced product that can handle food packaging trays, it can be made of recovered thermoplastic resin foam. It is optimally used as a device for volume reduction by installing it in a supermarket etc. in order to reduce the transportation cost of trays.
【0017】[0017]
以上説明したように本考案熱可塑性樹脂発泡体の減容化装置は、加熱装置を備 えた2枚の相対向する圧力板により加熱しながら加圧する構成を採用したことに より、従来の加熱気体や押出機を利用して溶融する装置に比較して、加熱された 圧力板に発泡体が押しつけられて接触するため、発泡体が効率よく溶融し未溶融 の発泡体が加圧力により逐次圧力板に接触して溶融していくため、短時間で熱可 塑性樹脂発泡体の減容化を行うことができる効果を有する。 特に、本考案装置はトレイ等のような低発泡でしかも相互に重なり合い易い形 状を有する加熱の際の熱効率の悪い発泡体に対しても、粉砕等の前処理装置が不 要であり、且つ速やに処理を行うことが可能である。 又、本考案装置は2枚の相対向する圧力板の間に発泡体を載置するために、圧 力板の距離を任意に調節することができるため、発泡体の大きさ形状等に幅広く 対応することができ、発泡体を予め切断して一定の大きさにする必要がない。 又、発泡体の圧縮は、加熱された圧力板が発泡体間の相互の空隙を減らして順 次発泡体が接触して行くために、圧縮に係る圧力が低く、必ずしも高圧の加圧装 置を使用しなくてもよいため、小規模を加圧装置を利用して、軽量で安価な装置 が得られる。 As described above, the volume reduction device for thermoplastic resin foams of the present invention adopts the structure of pressurizing while heating by the two pressure plates facing each other equipped with the heating device. In comparison with a device that melts using an extruder or extruder, the foam is pressed against the heated pressure plate and comes into contact with it, so that the foam melts efficiently and the unmelted foam is pressed by the pressure plate. Since it comes into contact with and melts, it has the effect of reducing the volume of the thermoplastic resin foam in a short time. In particular, the device of the present invention does not require a pretreatment device such as crushing even for foams having low foaming efficiency such as trays and having a shape that easily overlaps each other and has poor thermal efficiency during heating, and Processing can be performed quickly. In addition, since the device of the present invention mounts the foam between the two pressure plates facing each other, the distance between the pressure plates can be arbitrarily adjusted, so that it can be widely applied to the size and shape of the foam. Yes, there is no need to pre-cut the foam to size. In addition, the compression of the foam is low because the heated pressure plate reduces mutual voids between the foams and the successive foams come into contact with each other. Since it does not need to be used, a small-scale pressurizing device can be used to obtain a lightweight and inexpensive device.
【図面の簡単な説明】[Brief description of drawings]
【図1】本考案熱可塑性樹脂発泡体の減容化装置の一例
を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a volume reducing device for a thermoplastic resin foam according to the present invention.
【図2】圧力板の他の例を示す断面図である。FIG. 2 is a sectional view showing another example of a pressure plate.
【図3】本考案熱可塑性樹脂発泡体の減容化装置の他の
例を示す断面図である。FIG. 3 is a cross-sectional view showing another example of the device for reducing the volume of a thermoplastic resin foam according to the present invention.
1 熱可塑性樹脂発泡体の減容化装置 2 移動圧力板 3 固定圧力板 4 熱可塑性樹脂発泡体 5 加圧装置 10 熱板 11 溝 1 Volume Reduction Device for Thermoplastic Resin Foam 2 Moving Pressure Plate 3 Fixed Pressure Plate 4 Thermoplastic Resin Foam 5 Pressurizing Device 10 Hot Plate 11 Groove
Claims (2)
可塑性樹脂発泡体を圧縮して該熱可塑性樹脂発泡体の容
積を減少させる装置であって、上記圧力板を加熱するた
めの加熱装置を備え、少なくとも一方の圧力板が熱可塑
性樹脂発泡体を加熱しつつ加圧して圧縮するための加圧
装置を備えていることを特徴とする熱可塑性樹脂発泡体
の減容化装置。1. A device for compressing a thermoplastic resin foam placed between two pressure plates facing each other to reduce the volume of the thermoplastic resin foam, which is for heating the pressure plate. A volume reducing apparatus for a thermoplastic resin foam, comprising a heating device, and at least one of the pressure plates comprises a pressure device for pressurizing and compressing the thermoplastic resin foam while heating.
た熱可塑性樹脂発泡体を外部に排出するための溝もしく
は凹部が形成されている請求項1記載の熱可塑性樹脂発
泡体の減容化装置。2. The volume reduction of the thermoplastic resin foam according to claim 1, wherein a groove or a recess for discharging the melted thermoplastic resin foam to the outside is formed on the surface of at least one of the pressure plates. apparatus.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7883891U JPH0524319U (en) | 1991-09-03 | 1991-09-03 | Thermoplastic resin foam volume reduction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7883891U JPH0524319U (en) | 1991-09-03 | 1991-09-03 | Thermoplastic resin foam volume reduction device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0524319U true JPH0524319U (en) | 1993-03-30 |
Family
ID=13672974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7883891U Pending JPH0524319U (en) | 1991-09-03 | 1991-09-03 | Thermoplastic resin foam volume reduction device |
Country Status (1)
Country | Link |
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JP (1) | JPH0524319U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0716840A (en) * | 1993-06-30 | 1995-01-20 | Koji Sakata | Pet bottle treatment device |
CN111332013A (en) * | 2020-03-24 | 2020-06-26 | 台州市美琪乐工艺品有限公司 | Paper laminating machine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5036467A (en) * | 1973-08-03 | 1975-04-05 | ||
JPS6428840A (en) * | 1987-07-23 | 1989-01-31 | Sanken Electric Co Ltd | Manufacture of integrated circuit |
JPH0254509B2 (en) * | 1981-05-15 | 1990-11-21 | Kunihiko Yano | |
JPH03112611A (en) * | 1989-09-27 | 1991-05-14 | Takashi Masago | Method of and device for volume reducing treatment for synthetic resin waste |
JPH04338280A (en) * | 1991-05-14 | 1992-11-25 | Sanwa Kako Kk | Volume reduction treatment for plastic foam waste material |
JP4114485B2 (en) * | 2003-01-15 | 2008-07-09 | 日産自動車株式会社 | Vehicle traveling state detection device and vehicle traveling control device |
-
1991
- 1991-09-03 JP JP7883891U patent/JPH0524319U/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5036467A (en) * | 1973-08-03 | 1975-04-05 | ||
JPH0254509B2 (en) * | 1981-05-15 | 1990-11-21 | Kunihiko Yano | |
JPS6428840A (en) * | 1987-07-23 | 1989-01-31 | Sanken Electric Co Ltd | Manufacture of integrated circuit |
JPH03112611A (en) * | 1989-09-27 | 1991-05-14 | Takashi Masago | Method of and device for volume reducing treatment for synthetic resin waste |
JPH04338280A (en) * | 1991-05-14 | 1992-11-25 | Sanwa Kako Kk | Volume reduction treatment for plastic foam waste material |
JP4114485B2 (en) * | 2003-01-15 | 2008-07-09 | 日産自動車株式会社 | Vehicle traveling state detection device and vehicle traveling control device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0716840A (en) * | 1993-06-30 | 1995-01-20 | Koji Sakata | Pet bottle treatment device |
CN111332013A (en) * | 2020-03-24 | 2020-06-26 | 台州市美琪乐工艺品有限公司 | Paper laminating machine |
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