JPS63222816A - Manufacture of polyurethane foam - Google Patents
Manufacture of polyurethane foamInfo
- Publication number
- JPS63222816A JPS63222816A JP62057418A JP5741887A JPS63222816A JP S63222816 A JPS63222816 A JP S63222816A JP 62057418 A JP62057418 A JP 62057418A JP 5741887 A JP5741887 A JP 5741887A JP S63222816 A JPS63222816 A JP S63222816A
- Authority
- JP
- Japan
- Prior art keywords
- foaming
- tank
- stock solution
- rise
- polyurethane foam
- 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.)
- Granted
Links
- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 31
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000005187 foaming Methods 0.000 claims abstract description 106
- 239000011550 stock solution Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 8
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 21
- 239000006260 foam Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 15
- 239000002904 solvent Substances 0.000 description 14
- 239000002994 raw material Substances 0.000 description 9
- 239000012948 isocyanate Substances 0.000 description 8
- 150000002513 isocyanates Chemical class 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229920005862 polyol Polymers 0.000 description 4
- 150000003077 polyols Chemical class 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000012974 tin catalyst Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、ポリウレタンフォームの製造方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for producing polyurethane foam.
［従来の技術］
従来、ウレタンフオームスラブは大型ブロック状に発泡
成形されたウレタンフオームで、これを所望の厚さにス
ライスし、あるいは所望の形状に切断加工することによ
り車両用内装材や車両用クッション材として広く使用さ
れている。[Prior Art] Conventionally, urethane foam slabs are urethane foam that is foam-molded into large blocks, which are then sliced to a desired thickness or cut into a desired shape to be used as interior materials for vehicles or for vehicles. Widely used as cushioning material.
ところで、ポリウレタンフォームの製造方法として、第
５図に示す如く、大型の容器（発泡槽）１にポリウレタ
ン発泡原液を注入し、これを発泡ライズさせ、キュアさ
せることによりポリウレタンフォームスラブ２を製造す
る方法が知られている。この場合、発泡槽１の内面を図
示しない離型紙で覆って発泡操作を行なうのが普通であ
る。かかるバッチ式製造方法によれば、比較的狭い場所
でも実施できるという特徴を有する。また、この方法で
は、発泡槽１の形状を変化させることで任意形状のスラ
ブを製造できるという長所がある。By the way, as a method for producing polyurethane foam, as shown in FIG. 5, a polyurethane foam slab 2 is produced by injecting a polyurethane foam stock solution into a large container (foaming tank) 1, foaming it, and curing it. It has been known. In this case, the foaming operation is usually performed with the inner surface of the foaming tank 1 covered with release paper (not shown). This batch-type manufacturing method has the feature that it can be carried out even in a relatively narrow space. Furthermore, this method has the advantage that by changing the shape of the foaming tank 1, slabs of arbitrary shapes can be manufactured.
［発明が解決しようとする問題点］
しかしながら、従来のバッチ式製造方法によれば、以下
に述べる問題点を有する。[Problems to be Solved by the Invention] However, the conventional batch-type manufacturing method has the following problems.
即ち、発泡槽１にポリウレタン発泡原液を攪拌して注入
すると、発泡反応が進行し、除徐に液面がライズする。That is, when the polyurethane foaming stock solution is stirred and poured into the foaming tank 1, the foaming reaction proceeds and the liquid level gradually rises.
その際、発泡反応が進行するに伴ってライズする原液の
粘度も上昇するから、発泡槽１に接触している付近では
発泡槽内面との摩擦抵抗により発泡が阻害されてしまう
。このため、発泡完了後のポリウレタンフォームスラブ
２は、第５図及び第６図に示すように、スラブの中央で
高く周縁部で低い形状となり、平坦な頂部が得られない
。At this time, as the foaming reaction progresses, the viscosity of the rising stock solution also increases, so foaming is inhibited near the area where it contacts the foaming tank 1 due to frictional resistance with the inner surface of the foaming tank. For this reason, the polyurethane foam slab 2 after foaming has a shape that is high at the center and low at the periphery, as shown in FIGS. 5 and 6, and a flat top cannot be obtained.
その結果、第５図に二点ａｍで示したように、得られた
スラブ２の凸状頂部を所定の寸法になるまで切除しなけ
ればならず、廃棄部分を生じたり工程が増大する等の問
題があった。As a result, as shown by two points am in FIG. 5, the convex top of the obtained slab 2 must be cut off to a predetermined size, resulting in waste parts and an increase in the number of steps. There was a problem.
本発明は上記事情に鑑みてなされたもので、ポリウレタ
ンフォームスラブを製造する際、頂部が平坦なスラブを
得ることができるポリウレタンフォームの製造方法を提
供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for manufacturing polyurethane foam that can produce a slab with a flat top when manufacturing a polyurethane foam slab.
［問題点を解決するための手段］
本発明は、ポリウレタン発泡原液を攪拌混合して発泡槽
内に注入した後発泡原液の発泡上昇を開始させ、発泡上
昇が約７０％進行したところから完了直前の任意のとこ
ろで、上部より発泡槽内に裏面が平坦な重しを載せ発泡
上昇を完了させることを要旨とする。[Means for Solving the Problems] In the present invention, after stirring and mixing a polyurethane foaming stock solution and injecting it into a foaming tank, the foaming stock solution starts to rise in foaming, and from the point where the foaming rise has progressed by about 70%, the process starts immediately before completion. The gist is to place a weight with a flat back surface into the foaming tank from above at any point in the foaming tank to complete the foaming process.
［作用］
本発明によれば、適宜に混合、１！！拌したポリウレタ
ンフォーム発泡原液を発泡槽に注入した後、発泡原液の
発泡上昇（ライズ）を開始させ、発泡上昇が約７０％進
行したところから完了直前のところで、上部より発＠槽
内に裏面が平坦な重しをのせて発泡ライズを完了させる
ことにより、頂部が平坦なポリウレタンフォームスラブ
を得ることができる。従って、従来のように凸状頂部を
所定の形状になるまで切ったりすることなく、ムダなス
ラブが生じないとともに切断工程を省略できる。[Function] According to the present invention, appropriate mixing, 1! ! After injecting the stirred polyurethane foam stock solution into the foaming tank, the foaming stock solution starts to rise, and when the foaming rise has progressed to about 70% and is just before completion, the back side of the foaming stock solution enters the tank from the top. By completing the foam rise by applying a flat weight, a polyurethane foam slab with a flat top can be obtained. Therefore, unlike the conventional method, the convex top portion is not cut into a predetermined shape, and unnecessary slabs are not generated and the cutting process can be omitted.
本発明において、重しの材質は金属、プラスチックなど
種々のものが用いられるが、発泡反応によるガス（炭酸
ガス）を逃がすためポリウレタンフォームシートなどの
連続気泡のフオームシートを重しの裏面に用いるのが好
ましい。In the present invention, various materials such as metal and plastic can be used for the weight, but it is preferable to use an open-cell foam sheet such as a polyurethane foam sheet on the back side of the weight in order to release gas (carbon dioxide) caused by the foaming reaction. is preferred.
また、上記重しのｔｉｌｌは発泡原液のライスの速度９
発泡ゲル化の強さ１発泡槽の大きさにより一般に決めら
れないが、略０．５〜２．Ｏａ／ａｍ２程度が良い。こ
こで、重しは重すぎると、発泡を抑制すると同時に発泡
反応を阻害しワレなどを生じる。また、軽すぎると、発
泡原液の頂部により１しがそのまま持上げられ平坦にな
らない。In addition, the till of the weight mentioned above is the speed of foaming stock solution rice 9
The strength of foaming and gelation cannot generally be determined depending on the size of the foaming tank, but is approximately 0.5 to 2. Approximately Oa/am2 is good. Here, if the weight is too heavy, it suppresses foaming and at the same time inhibits the foaming reaction, resulting in cracking and the like. Moreover, if it is too light, the top of the foaming stock solution will just lift it up and it will not be flat.
本発明において、ポリウレタンフォーム発泡原液は、ポ
リエーテルポリオール、ポリエステルポリオールなどの
ポリオール、トリレンジイソシアネートなどの有機イソ
シアネート、アミン触媒、錫触媒、発泡剤（水）、整泡
剤（シリコーン油）、その他顔料、充填剤等が要求され
る特性に応じて適宜に組合われて使用される。In the present invention, the polyurethane foam foaming stock solution includes polyols such as polyether polyols and polyester polyols, organic isocyanates such as tolylene diisocyanate, amine catalysts, tin catalysts, blowing agents (water), foam stabilizers (silicone oil), and other pigments. , fillers, etc. are used in appropriate combinations depending on the required properties.
本発明において、発泡上昇が約７０％進行した後完了直
前の任意のところで重しを用いるが、これは発泡上昇が
７０％より低いと、ゲル化が弱いため重しを支えるきれ
ず発泡反応を阻害するからである。In the present invention, a weight is used at any point after approximately 70% of the foaming rise has progressed and just before completion; however, if the foaming rise is lower than 70%, the gelation is weak and the weight cannot be supported, resulting in the foaming reaction. This is because it inhibits.
［実施例］
以下、一本発明の一実施例を第１図〜第３図を参照して
説明する。ここで、第１図は本発明に係るポリウレタン
フォームの製造＠置、第２図は同装置に係る発ａＷｉの
斜視図、第３図は同発泡槽の動作の説明図である。[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3. Here, FIG. 1 is a manufacturing @ equipment for polyurethane foam according to the present invention, FIG. 2 is a perspective view of a foaming AWi according to the same apparatus, and FIG. 3 is an explanatory view of the operation of the same foaming tank.
図中の１１は、上部が開口された円筒形状の発泡槽であ
る。この発泡槽１１上には、枠体１２が設けられている
。この枠体１２には、所定の位置にスプロケット１３を
取付けた回転軸１４が設けられている。前記スプロケッ
ト１３には、一端が発泡槽１１の外側に延出してその先
端にバランサー１５を吊した３本のチェーン１６が係合
されている。これらのチェーン１６の他端は、発泡槽１
１内に配置された裏面が平坦な重し１７の上面側に夫々
バランス良く取付けられている。なお、前記重り１７の
裏面には、図示しないがポリウレタンフォームシートが
張付けられている。前記発泡槽１１の側壁には、発泡原
液導入口１１ａが開口されており、該導入口１１ａには
開閉自在な屏１８が設けられている。11 in the figure is a cylindrical foaming tank with an open top. A frame 12 is provided on this foaming tank 11. This frame 12 is provided with a rotating shaft 14 having a sprocket 13 attached at a predetermined position. Three chains 16 are engaged with the sprocket 13, one end of which extends outside the foaming tank 11 and has a balancer 15 suspended from the tip. The other ends of these chains 16 are connected to the foaming tank 1
The weights 17 are each mounted in a well-balanced manner on the upper surface side of a weight 17 whose back surface is flat. Note that, although not shown, a polyurethane foam sheet is attached to the back surface of the weight 17. A foaming stock solution introduction port 11a is opened in the side wall of the foaming tank 11, and a folding screen 18 that can be opened and closed is provided in the introduction port 11a.
前記発泡槽１１の近傍には、レール２０が付設されてい
る。このレール２０上には脚部に車輪２１を設けた台１
！２２がｔｉｌｌされ、押出しシリンダ２３の伸縮によ
り発泡槽１１に対して接近したり後退できるようになっ
ている。前記台車２２には、回動軸２４が水平に張設さ
れ、前記回動軸２４には円筒形の混合攪拌槽２５が枢軸
固定されている。前記回動軸２４は、図示しないモータ
及び変則ギアにより回動駆動されるようになっており、
これにより混合混合ｌｌ！拌槽２５は図中矢印で示す方
向に回動傾斜されるようになっている。混合Ｗ！痒槽２
５の内部にはその軸方向に撹拌羽根２６が設けられ、こ
の攪拌羽根２６は混合攪拌槽２５の下に付設されたモー
タ２７により回転駆動されるようになっている。また、
前記混合攪拌槽２５の側面下端部には、発泡液吐出管２
８が斜下方に向けて延設されている。この発泡原液吐出
管２８と前記混合攪拌槽２５とは、両者の境界部分に設
けられた電磁弁２９を介して連通されている。A rail 20 is attached near the foaming tank 11. On this rail 20 is a platform 1 having wheels 21 on its legs.
! 22 is tilted so that it can approach or retreat from the foaming tank 11 by expanding and contracting the extrusion cylinder 23. A rotating shaft 24 is stretched horizontally on the cart 22, and a cylindrical mixing and stirring tank 25 is pivotally fixed to the rotating shaft 24. The rotation shaft 24 is rotationally driven by a motor and an irregular gear (not shown).
This allows the mixture to be mixed! The stirring tank 25 is configured to be rotated and tilted in the direction indicated by the arrow in the figure. Mixed W! Itching tank 2
A stirring blade 26 is provided inside the mixing tank 5 in the axial direction thereof, and the stirring blade 26 is rotationally driven by a motor 27 attached below the mixing stirring tank 25 . Also,
A foaming liquid discharge pipe 2 is provided at the lower end of the side surface of the mixing and stirring tank 25.
8 extends diagonally downward. This foaming stock solution discharge pipe 28 and the mixing agitation tank 25 are communicated with each other via a solenoid valve 29 provided at the boundary between the two.
更に、混合撹拌槽２５の上部には有機イソシアネート成
分の計量タンク３０が配置され、該計量タンク３０は配
管３１を介して有機イソシアネート供給源に連結されて
いる。前記計量タンク３０の下端には原料供給管３２が
設けられ、該原料供給管３２と計量タンク３０の間には
′ＩＩ！磁弁３３が設けられている。また、原料供給管
３２には例えばポリオールや触媒等、イソシアネート成
分以外のポリウレタンフォーム原料供給配ｔ１３４が連
結されている。Furthermore, a measuring tank 30 for the organic isocyanate component is arranged above the mixing and stirring tank 25, and the measuring tank 30 is connected to an organic isocyanate supply source via a pipe 31. A raw material supply pipe 32 is provided at the lower end of the measuring tank 30, and a space between the raw material supply pipe 32 and the measuring tank 30 is 'II! A magnetic valve 33 is provided. Further, the raw material supply pipe 32 is connected to a polyurethane foam raw material supply line t134 other than isocyanate components, such as polyols and catalysts.
前記有機イソシアネート成分計量タンク３０にはポリウ
レタンフォーム原料の洗浄溶剤供給管３５が付設され、
この供給管３５は洗浄溶剤タンク３６に連結されている
。また、洗浄溶剤廃液受け３７が設置され、この廃液受
け３７はポンプ３８を介して前記洗浄溶剤タンク３６に
連結されている。A cleaning solvent supply pipe 35 for polyurethane foam raw material is attached to the organic isocyanate component measuring tank 30,
This supply pipe 35 is connected to a cleaning solvent tank 36. Further, a cleaning solvent waste liquid receiver 37 is installed, and this waste liquid receiver 37 is connected to the cleaning solvent tank 36 via a pump 38.
次に、上記構造の製造装置の作用について説明する。Next, the operation of the manufacturing apparatus having the above structure will be explained.
まず、押出しシリンダ２３を伸縮させ、混合攪拌槽２５
を発泡槽１１から後退させた状態でポリウレタンフォー
ム発泡原液の調整を行なう。即ち、配管３１から計量タ
ンク３０内に有機イソシアネート成分を供給して計量し
た後、ＭＷＪ弁３３を開くことにより、この所定量のイ
ソシアネート成分を原料供給管３２から混合攪拌槽２５
内に投入する。同時に、配置１３４からポリオール成分
及び触媒等の他の原料を混合攪拌槽２５内に投入する。First, the extrusion cylinder 23 is expanded and contracted, and the mixing stirring tank 25 is
The polyurethane foam foaming stock solution is adjusted in a state where the polyurethane foam is retreated from the foaming tank 11. That is, after supplying and measuring the organic isocyanate component from the pipe 31 into the measuring tank 30, by opening the MWJ valve 33, a predetermined amount of the isocyanate component is transferred from the raw material supply pipe 32 to the mixing tank 25.
Put it inside. At the same time, other raw materials such as a polyol component and a catalyst are introduced into the mixing tank 25 from the arrangement 134.
つづいて、攪拌羽根２６を回転させ、均一に混合する。Next, the stirring blade 26 is rotated to mix uniformly.
次いで、押出しシリンダ２３を伸張駆動させることによ
り混合撹拌槽２５を図示の位置まで前進させ、発泡原液
吐出管２８の先端を発泡原液導入口１１ａから発泡槽１
１内に挿入する。その際、扉１６は発泡原液吐出管２８
で押されて容易に開くようになっている。つづいて、電
磁弁２９を開くことにより混合撹拌槽２５内で調整され
た発泡原液を吐出管２８を通して発泡槽１１内に注入す
る。その際、必要に応じて回動軸２４を回転させ、混合
撹拌槽２５を前傾させることにより発泡原液の流出を促
進する。Next, by driving the extrusion cylinder 23 to extend, the mixing and stirring tank 25 is advanced to the illustrated position, and the tip of the foaming stock solution discharge pipe 28 is inserted into the foaming tank 1 from the foaming stock solution inlet 11a.
Insert within 1. At that time, the door 16 is connected to the foaming stock solution discharge pipe 28.
It can be easily opened by pressing the button. Subsequently, by opening the electromagnetic valve 29, the foaming stock solution adjusted in the mixing and stirring tank 25 is injected into the foaming tank 11 through the discharge pipe 28. At this time, the rotating shaft 24 is rotated as necessary to tilt the mixing and stirring tank 25 forward to promote outflow of the foaming stock solution.
この後、押出しシリンダ２３を収縮駆動させることによ
り混合攪拌槽２５を後退させ、扉１６を閉じる。この際
、発泡槽１１内の発泡原液の状態は、第３図（ａ）に示
す通りになっている。そして、発泡槽１１内ではポリウ
レタン発泡原液の発泡反応及びこれによる発泡ライスが
進行する。しばらくして発泡ライズが例えば約７０％進
行したところで、第３図（ｂ）に示す如く発泡槽１１内
の上方に位置していた重りを下方に落とす。その結果、
発泡槽１１内では発泡原液が重り１７を押し上げながら
ライズが進行し、所望のポリウレタンフォームスラブ１
９が得られる（第３図（Ｃ）図示）。Thereafter, the extrusion cylinder 23 is driven to contract to move the mixing and stirring tank 25 backward, and the door 16 is closed. At this time, the state of the foaming stock solution in the foaming tank 11 is as shown in FIG. 3(a). In the foaming tank 11, the foaming reaction of the polyurethane foaming stock solution and the resulting foaming rice proceed. After a while, when the foaming rise has progressed, for example, by about 70%, the weight located above the foaming tank 11 is dropped downward, as shown in FIG. 3(b). the result,
In the foaming tank 11, the foaming stock solution pushes up the weight 17 as the rise progresses, forming the desired polyurethane foam slab 1.
9 is obtained (as shown in FIG. 3(C)).
一方、上記のように発泡槽１１の中でポリタンフオーム
スラブの発泡成形が行われている間に、発泡槽１１から
後退した混合攪拌槽２８及びイソシアネート成分計量タ
ンク３０では、次のようにして内面に付着しているポリ
ウレタン発泡原液の洗浄が行われる。即ち、ポンプ３８
が駆動し、洗浄溶剤タンク３６内に洗浄溶剤が供給され
、更に混合攪拌槽２５に洗浄溶剤が満たされる。つづい
て、攪拌羽根２６を回すことにより、混合攪拌槽２６の
内壁に付着している発泡原液を溶解した後、電磁弁２９
を開いて洗浄溶剤を排出する。洗浄溶剤を排出する際、
吐出管２８の内壁に付着している発泡原液も溶解される
。こうして排出された洗浄溶剤は廃液受け３７に貯溜さ
れた後、ポンプ３８で洗浄溶剤タンク３６に送られ再利
用される。On the other hand, while the polytan foam slab is being foam-molded in the foaming tank 11 as described above, the mixing and stirring tank 28 and the isocyanate component measuring tank 30, which have been retreated from the foaming tank 11, have internal surfaces as follows. The polyurethane foaming solution adhering to the product is cleaned. That is, pump 38
is driven, the cleaning solvent is supplied into the cleaning solvent tank 36, and the mixing and stirring tank 25 is further filled with the cleaning solvent. Next, by turning the stirring blade 26, the foaming stock solution adhering to the inner wall of the mixing stirring tank 26 is dissolved, and then the solenoid valve 29
Open to drain cleaning solvent. When draining the cleaning solvent,
The foaming stock solution adhering to the inner wall of the discharge pipe 28 is also dissolved. The cleaning solvent thus discharged is stored in the waste liquid receiver 37, and then sent to the cleaning solvent tank 36 by the pump 38 and reused.
洗浄が終了すると、記述したのと同様にして次の発泡原
料の調整が行われる。また、発泡槽１１は図示しないタ
ーンテーブルを回転して引出され、代わりに別の発泡槽
が図示の位置に設置される。When the cleaning is completed, the next foaming material is prepared in the same manner as described. Further, the foaming tank 11 is pulled out by rotating a turntable (not shown), and another foaming tank is installed in its place at the position shown.
こうして、上記と同様の操作を繰返すことにより連続し
てポリウレタンフォームスラブの製造を行なうことがで
きる。In this way, polyurethane foam slabs can be continuously manufactured by repeating the same operations as above.
しかして、上記実施例によれば、ポリウレタンフォーム
原液を攪拌台してこれを発泡槽１１内に注入した後、発
泡原液の発泡ライスを開始させ、ライズが約７０％進行
したところで菫り１７を載せライズを完了させるため、
ライズ中、発泡槽１１内の発泡原液の略中央部が重り１
７でライスを抑制され、かつ周辺部が重り１７が直接当
接しないため自由にライズし、もって最終的に発泡原液
の頂部全体が均一になり、第７図に示す如く頂部が平坦
な円筒形状のポリウレタン７オームスラブを得ることが
できる。According to the above embodiment, after the polyurethane foam stock solution is injected into the foaming tank 11 using a stirring table, foaming rice of the foaming stock solution is started, and when the rise has progressed to about 70%, the merging 17 is started. In order to complete the loading rise,
During rise, approximately the center of the foaming stock solution in the foaming tank 11 is placed under the weight 1.
7 prevents rice from rising, and since the weight 17 does not directly contact the peripheral area, it rises freely, and as a result, the entire top of the foaming stock solution becomes uniform, resulting in a cylindrical shape with a flat top as shown in Figure 7. polyurethane 7 ohm slabs can be obtained.
なお、上記実施例では、ライスが約７０％進行したとこ
ろで重りを載せたが、これに限定されず、ライズが約７
０％進行したところから完了直前の任意のところで適宜
重りを載せてもよい。In the above example, the weight was placed when the rice had progressed by about 70%, but the weight was not limited thereto.
A weight may be appropriately placed at any point from the point where the process has progressed 0% to just before completion.
また、上記実施例で述べたポリウレタンフォームの製造
装置の構造も上述した構造のものに限定されないことは
勿論である。Furthermore, it goes without saying that the structure of the polyurethane foam manufacturing apparatus described in the above embodiments is not limited to the structure described above.
［発明の効果］
以上詳述した如く本発明によれば、従来と比べ頂面が平
坦なポリウレタンフォームスラブを得ることができ、も
って従来のように凸状頂部を所定の形状になるまで切っ
たりすることなく、スラブの歩留りの向上、切断工程の
省略が可能なポリウレタンフォームの製造方法を提供で
きる。[Effects of the Invention] As detailed above, according to the present invention, it is possible to obtain a polyurethane foam slab with a flat top surface compared to the conventional one, so that it is not necessary to cut the convex top part to a predetermined shape as in the conventional case. It is possible to provide a method for producing polyurethane foam that can improve the yield of slabs and omit the cutting process without having to do so.
第１図は本発明に係るポリウレタンフォームの製造装置
の説明図、第２図は同装置に係る発泡槽の斜視図、第３
図（ａ）〜（Ｃ）は同発泡槽内の発泡状態の説明図、第
４図は従来のバッチ式製造ウレタンフオームスラブの斜
視図、第６図は第５図の正面図、第７図は本発明法によ
り得られるポリウレタンフォームスラブの正面図である
。
１１・・・発泡槽、１２・・・枠体、１３・・・スプロ
ケット、１４・・・回転軸、１５・・・バランサー、１
６・・・チェーン、１７・・・重り、１８・・・ポリウ
レタンフォームスラブ、２０・・・レール、２１・・・
車輪、２２・・・台車、２３・・・押出しシリンダー、
２５・・・混合攪拌槽、２６・・・攪拌羽根、２７・・
・モータ、１５・・・シャフト、１６・・・酢、１８・
・・支持台、２０・・・レール、２１・・・車輪、２２
・・・台車、２３・・・押出しシリンダ、２４・・・回
動軸、２５・・・混合攪拌槽、２６・・・攪拌羽根、２
８・・・発泡原液吐出管、２９．３３・・・電磁弁、３
０・・・計量タンク、３１・・・配管、３２・・・原料
供給管、３４・・・原料供給配管、３５・・・洗浄溶剤
供給管、３６・・・洗浄溶剤タンク、３７・・・洗浄溶
剤廃液受け、３８・・・ポンプ。
出願人代理人 弁理士 鈴江武彦
ｗ＆２図
（”） （ｂ）
（ｃン第３図FIG. 1 is an explanatory diagram of a polyurethane foam manufacturing apparatus according to the present invention, FIG. 2 is a perspective view of a foaming tank according to the same apparatus, and FIG.
Figures (a) to (C) are explanatory diagrams of the foaming state in the foaming tank, Figure 4 is a perspective view of a conventional batch-type urethane foam slab, Figure 6 is a front view of Figure 5, and Figure 7. FIG. 1 is a front view of a polyurethane foam slab obtained by the method of the present invention. 11... Foaming tank, 12... Frame body, 13... Sprocket, 14... Rotating shaft, 15... Balancer, 1
6... Chain, 17... Weight, 18... Polyurethane foam slab, 20... Rail, 21...
Wheels, 22... trolley, 23... extrusion cylinder,
25... Mixing stirring tank, 26... Stirring blade, 27...
・Motor, 15...Shaft, 16...Vinegar, 18.
...Support stand, 20...Rail, 21...Wheel, 22
... Cart, 23 ... Extrusion cylinder, 24 ... Rotating shaft, 25 ... Mixing stirring tank, 26 ... Stirring blade, 2
8... Foaming stock solution discharge pipe, 29.33... Solenoid valve, 3
0... Measuring tank, 31... Piping, 32... Raw material supply pipe, 34... Raw material supply pipe, 35... Cleaning solvent supply pipe, 36... Cleaning solvent tank, 37... Cleaning solvent waste liquid receiver, 38...pump. Applicant's agent Patent attorney Takehiko Suzue w&2 Figure ('') (b)
(Figure 3)
Claims (1)
た後発泡原液の発泡上昇を開始させ、発泡上昇が約７０
％進行したところから完了直前の任意のところで、上部
より発泡槽内に裏面が平坦な重しを載せ発泡上昇を完了
させることを特徴とするポリウレタンフォームの製造方
法。After stirring and mixing the polyurethane foaming stock solution and injecting it into the foaming tank, the foaming stock solution started to foam and the foaming rise was approximately 70%.
A method for producing polyurethane foam, which comprises placing a weight with a flat back surface from above into a foaming tank at any point immediately before completion of foaming to complete the foaming process.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057418A JPH0784015B2 (en) | 1987-03-12 | 1987-03-12 | Method for producing polyurethane foam |
| CA000541369A CA1290895C (en) | 1986-12-25 | 1987-07-06 | Method and an apparatus for producing polyurethane foam |
| US07/070,774 US4988271A (en) | 1986-12-25 | 1987-07-07 | Apparatus for producing polyurethane foam |
| AU75357/87A AU608520B2 (en) | 1986-12-25 | 1987-07-08 | A method and an apparatus for producing polyurethane foam |
| KR1019870007469A KR910000312B1 (en) | 1986-12-15 | 1987-07-11 | Method and apparatus for producing polyurethane foam |
| EP87110096A EP0273099B1 (en) | 1986-12-25 | 1987-07-13 | A method and an apparatus for producing polyurethane foam |
| AT87110096T ATE81065T1 (en) | 1986-12-25 | 1987-07-13 | METHOD AND DEVICE FOR PRODUCTION OF POLYURETHANE FOAM. |
| CN87104799A CN1020560C (en) | 1986-12-25 | 1987-07-13 | Method and apparatus for producing low density polyurethane foam |
| DE8787110096T DE3782019T2 (en) | 1986-12-25 | 1987-07-13 | METHOD AND DEVICE FOR PRODUCING POLYURETHANE FOAM. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057418A JPH0784015B2 (en) | 1987-03-12 | 1987-03-12 | Method for producing polyurethane foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63222816A true JPS63222816A (en) | 1988-09-16 |
| JPH0784015B2 JPH0784015B2 (en) | 1995-09-13 |
Family
ID=13055101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62057418A Expired - Lifetime JPH0784015B2 (en) | 1986-12-15 | 1987-03-12 | Method for producing polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0784015B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011510841A (en) * | 2008-01-31 | 2011-04-07 | バイエル・マテリアルサイエンス・アクチェンゲゼルシャフト | Method and apparatus for manufacturing slabstock foam |
| CN112476931A (en) * | 2020-10-30 | 2021-03-12 | 王蕊 | Preparation process of modified polyurethane material |
| CN115256771A (en) * | 2022-07-29 | 2022-11-01 | 宿迁嘉禾塑料金属制品有限公司 | Polyurethane sponge foaming production method and equipment thereof |
-
1987
- 1987-03-12 JP JP62057418A patent/JPH0784015B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011510841A (en) * | 2008-01-31 | 2011-04-07 | バイエル・マテリアルサイエンス・アクチェンゲゼルシャフト | Method and apparatus for manufacturing slabstock foam |
| CN112476931A (en) * | 2020-10-30 | 2021-03-12 | 王蕊 | Preparation process of modified polyurethane material |
| CN115256771A (en) * | 2022-07-29 | 2022-11-01 | 宿迁嘉禾塑料金属制品有限公司 | Polyurethane sponge foaming production method and equipment thereof |
| CN115256771B (en) * | 2022-07-29 | 2024-03-15 | 宿迁嘉禾塑料金属制品有限公司 | Foaming production method and equipment for polyurethane sponge |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0784015B2 (en) | 1995-09-13 |
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