JPS5848338B2 - Polyisocyanate Polyisocyanate Narabini Sonosouchi - Google Patents
Polyisocyanate Polyisocyanate Narabini SonosouchiInfo
- Publication number
- JPS5848338B2 JPS5848338B2 JP50111453A JP11145375A JPS5848338B2 JP S5848338 B2 JPS5848338 B2 JP S5848338B2 JP 50111453 A JP50111453 A JP 50111453A JP 11145375 A JP11145375 A JP 11145375A JP S5848338 B2 JPS5848338 B2 JP S5848338B2
- Authority
- JP
- Japan
- Prior art keywords
- foam
- foaming
- mold
- present
- polyisocyanate
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/586—Moulds with a cavity increasing in size during foaming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/10—Applying counter-pressure during expanding
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は自由発泡方向に対し垂直な一方向にのみ気泡を
膨眼させ、物性にすぐれたポリイソシアネート系発泡体
を製造する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a polyisocyanate foam with excellent physical properties by expanding cells only in one direction perpendicular to the free foaming direction.
ここに云うポリイソシア不一ト系発泡体は、その出発材
料とｌ一でイソシアネートを含む発泡体、例えばポリウ
レタン、ポリイソシアヌレート、ポリカルポジイミド等
の発泡体を包含して指称するが、以下にむいては本発明
をポリウレタン発泡体について例示説明することにする
。The polyisocyanate foam referred to herein includes foams containing isocyanate in combination with the starting material, such as foams of polyurethane, polyisocyanurate, polycarposiimide, etc. The present invention will now be illustrated using polyurethane foam.
一般にポリウレタン発泡体等の戒形方法及び装置につい
ては従来より種々の技術があり、実施されているが、こ
れらの戒形手段によって或形された発泡体の気泡は通常
、発泡方向に−長径を有する・楕円体形状となることが
知られている。In general, there are various techniques and devices for shaping polyurethane foam, etc., which have been practiced in the past, but the cells of the foam shaped by these shaping methods usually have a -major diameter in the foaming direction. It is known that it has an ellipsoidal shape.
そして、ポリウレタン発泡体の発泡方向による物性の種
々な相違はこの気泡構造に起因することも広く知られる
ところである。It is also widely known that the various differences in physical properties of polyurethane foams depending on the foaming direction are due to this cell structure.
そのため、かかる気泡構造を改変する方法ならびに装置
について種々の検討が加えられ、既に米国特許第３．２
４． ９，４ ８ ６号明細書、特公昭４８−２８７
８１号公報等に釦いて一部提案されている。Therefore, various studies have been conducted on methods and devices for modifying the cell structure, and US Patent No. 3.2 has already been proposed.
4. Specification No. 9,486, Japanese Patent Publication No. 1987-287
Some proposals have been made in Publication No. 81, etc.
しかし、これらの方法は発泡体の成形容器の発泡上面に
蓋を設けるか、又は平板によって発泡体の頂部を押えて
容器の側壁を拡大しようとする等、倒れも発泡体頂部を
強制的に押えることによって等方性気泡を得ようとする
方法であり、戊形容器全体にかかる発泡圧かむのづと犬
となり成形容器の構或、離型の点に問題が残されていた
。However, these methods include placing a lid on the top of the foamed container, or pressing down on the top of the foam with a flat plate to try to expand the side walls of the container. This method attempts to obtain isotropic air bubbles by forming bubbles, and the foaming pressure exerted on the entire shape of the container becomes too strong, leaving problems with the structure of the molded container and its release from the mold.
そこで、本発明者等は、上記の如き問題に対処すべく、
かねてより研究を重ね、さきに特願昭４９−３６１００
号（特公昭５２ ５００６０号公報参照）にて発泡体
の表面高さを検知し、横開き機構を作動せしめて自由発
泡方向に対し垂直な方向へ気泡を膨脹させ、球形気泡を
有するポリウレタン発泡体を製造する方法を提案した。Therefore, the present inventors, in order to deal with the above problems,
After a long period of research, I finally applied for the patent application No. 1983-36100.
No. (Refer to Japanese Patent Publication No. 52-50060), the surface height of the foam is detected and the horizontal opening mechanism is activated to expand the cells in a direction perpendicular to the free foaming direction, thereby producing a polyurethane foam having spherical cells. proposed a method for manufacturing.
ところが、上記方法について更に検討を重ねたところ、
横方向の拡大についても必らずし２も２方向を必要とせ
ず、一方向、就中、進行方向に対し前後方向のみに型を
拡大するだけでも充分に所期の物質をもつ発泡体が得ら
れることを知見するに至つか。However, after further consideration of the above method,
The expansion in the lateral direction does not necessarily require two directions; it is sufficient to expand the mold in one direction, especially in the front and rear directions with respect to the direction of movement. Have you found out what you can get?
本発明は上述の如き情勢に対応し、簡易軽衣な構成の戊
形容器でもって、かつ離型時間の短縮化を図り得る気体
構造の改変手段を提供するものであり、その特徴とする
ところは、発泡体頂部に押え板等の装置を設けることな
く、発泡体が自由発泡する場合にむけるその発泡高さを
所定位置で検知し、これと相関連せしめて該自由発泡方
向と垂直な一方向にのみ積極的に型を拡大させることに
より、発泡を一方向に膨脹させることにある。In response to the above-mentioned situation, the present invention provides a means for modifying the gas structure of a hollow container having a simple and lightweight structure and shortening the mold release time.The present invention is characterized by: This method detects the foaming height at a predetermined position when the foam is free-foaming, without installing a device such as a presser plate on the top of the foam, and correlates this with the foaming height to detect the height perpendicular to the free-foaming direction. The aim is to expand the foam in one direction by actively expanding the mold only in that direction.
一般に硬質、半硬質を問わず、ポリウレタン発泡体はそ
の発泡原液を混合、撹拌後、数秒から数分に至る間にク
リーム状態となって発泡を始め、徐々に粘塵を増し、数
分から数十分後に発泡体表面に手を触れて亀べとつかな
い、所謂、タックフリーの状態となり、その後、更に数
秒から数分を経て発泡が完了する状態となる。In general, polyurethane foams, whether rigid or semi-rigid, turn into a cream state and begin foaming within a few seconds to several minutes after mixing and stirring the foaming solution, gradually increasing the viscosity and increasing the amount of foam from several minutes to several tens of minutes. After a few minutes, the surface of the foam will not feel sticky to the touch, a so-called tack-free state, and then, after several seconds to several minutes, foaming will be completed.
この場合、発泡体の気泡の形状はクリーム状からタック
フリーの間に決定され、タックフリーから発泡完了まで
の間は発泡体の体積にして数％しか体積増加がないため
、殆んど気泡の形状には影響されない。In this case, the shape of the bubbles in the foam is determined between creamy and tack-free, and since the volume increases by only a few percent from tack-free to the completion of foaming, most of the bubbles are Not affected by shape.
それ故、本発明は発泡原液が流動性を有するタックフリ
ーまでの間に発泡体の気泡形状を変えることが必要であ
り、そのため、その間に戒形容器の２側面を自由な状態
に１〜で発泡しつつある発泡体の周囲に殆んど圧力が加
わらないようにして発泡体の気泡形状を改変する。Therefore, in the present invention, it is necessary to change the shape of the bubbles in the foam until the foaming stock solution has fluidity and becomes tack-free. To modify the cell shape of a foam by applying little pressure around the foam that is foaming.
そして、この間の発泡体の発泡圧力は前述の如く発泡容
器上部が解放されており、又、発泡体が流動性を有して
いることから、極めて小さく、殆んど発泡原液の自重の
みとなっているために簡単な治具で２側面を自由に近い
状態にしてその方向に拡がる気泡により構成されたポリ
ウレタン発泡体を容易に得ることが可能である。During this time, the foaming pressure of the foam is extremely small because the upper part of the foaming container is open as mentioned above, and the foam has fluidity, and is almost solely due to the dead weight of the foaming solution. Therefore, with a simple jig, it is possible to easily obtain a polyurethane foam composed of air bubbles expanding in the two sides with the two sides almost free.
しかして、かかる本発明によって得られた気泡を有する
発泡体の外観形状は従来の発泡体のそれと殆んど変わら
ないが、物性面にむいてすぐれても・り、父、その製造
は頗る短時間に行なうことができ、生産性向上に資する
ところが犬である。Although the appearance of the foam with cells obtained by the present invention is almost the same as that of conventional foam, it has superior physical properties, and its production is extremely short. Dogs can help improve productivity because they can be done on time.
なかでも、本発明による発泡体の物性は特に寸法安定性
に勝れているので、使用目的によっては比重を大巾に下
げろことができ、発泡時の離型時間の短縮化も寄与１〜
で、大巾なコストダウンが期待できる。Among these, the physical properties of the foam according to the present invention are particularly excellent in dimensional stability, so the specific gravity can be significantly lowered depending on the purpose of use, and the mold release time during foaming can also be shortened.
Therefore, significant cost reductions can be expected.
なお、本発明において発泡体の気泡を殆んど完全球形に
近い等方性状とする考えは発泡体の発泡方向（立ち上り
方向）を従来の縦方向（Ｚ方向）たけであったのを横方
向（Ｘ方向）にも行なわしめ、その発泡方向の比率を適
宜勘案することにより行ない得るとの理由に起因するも
のであり、本発明はその有効なる手段を見出し得た．も
のである。In addition, in the present invention, the idea of making the cells of the foam almost completely spherical and isotropic is to change the foaming direction (rising direction) of the foam from the conventional vertical direction (Z direction) to the horizontal direction. This is due to the fact that the foaming process can also be carried out in the X-direction by appropriately considering the ratio of the foaming direction, and the present invention has found an effective means for this purpose. It is something.
次に、本発明の具体的な実施の態様の１例を添付凹面を
参照Ｉ一つつ更に詳，ｔ’Ｂ−Ｆる。Next, one example of a specific embodiment of the present invention will be described in more detail with reference to the attached concave surface.
なち・、本実施例に七・いては本発明の要部となる型の
外側に特に外壓宏使用し、二重の型と１−た場合を示す
。In other words, this embodiment shows a case in which a double mold is used in particular on the outside of the mold, which is the main part of the present invention.
しかし７、本発明にあ・いて外型の使用は必ら寸゛シ，
も必要ではなく、必須のものではない。However, according to the present invention, the use of the outer mold is necessarily limited in size,
is not necessary or required.
Ｉ一カ・し、外型を使用することは製作上、有利であり
、本発明に当然包含される。However, the use of an outer mold is advantageous in manufacturing and is naturally included in the present invention.
第１［゛ズ１は従来の発泡体における気泡の断面の態様
を示し７、自由発泡方向（ス方向）の充分な発泡に比し
、白由発泡方向（Ｚ方向）に対して垂直な方向（ｘ，ｙ
方向）の発泡が不充分なため、向山発泡方向（Ｚ方向）
に長径を有する楕円形をなしている。The first [1] indicates the cross-sectional shape of the cells in conventional foams, and compared to sufficient foaming in the free foaming direction (Z direction), the foaming in the direction perpendicular to the free foaming direction (Z direction) (x, y
Due to insufficient foaming in the foaming direction (direction), Mukaiyama foaming direction (Z direction)
It has an elliptical shape with a major axis of .
これに対し、本発明により或型された発泡体の気泡の断
面構成は前記第１図の場合と異なり、自由発泡方向（冗
方向）の発泡と同程度にこの方向に対して垂直な一方向
（Ｘ方向）の発泡が充分に行なわれ、略々球形に近い形
状をなしている。On the other hand, the cross-sectional structure of the cells in the foam molded according to the present invention is different from that shown in FIG. Foaming in the (X direction) is sufficiently performed, and the shape is almost spherical.
第２図は本実施例の方法にかいて使用する外型Ａの一例
を示すものであり、第３図は本発明に使用する型（以下
、本発明に釦いては内型という）の一例を示したもので
ある。Figure 2 shows an example of the outer mold A used in the method of this embodiment, and Figure 3 shows an example of the mold used in the present invention (hereinafter referred to as the inner mold for the button in the present invention). This is what is shown.
外型Ａぱ図示の如くその側択１が外方例えば図の矢印方
向に向かって開放可能なる如く形或されてあ・り、その
内部には後述の内型Ｂを容易に嵌合、離脱せしめるため
のローラーコンベア２が設けられている。As shown in the figure, the outer mold A is shaped so that its side 1 can be opened outward, for example, in the direction of the arrow in the figure, and the inner mold B, which will be described later, can be easily fitted into and removed from the inside thereof. A roller conveyor 2 is provided for this purpose.
一方、内型Ｂは第３図に図示した如きＸ方向のみに拡大
町能な側壁３を有するものであり、発泡完了後、発泡体
より取り除くため解体用金具により両側板は連結されて
いる。On the other hand, the inner mold B has a side wall 3 that can be expanded only in the X direction as shown in FIG. 3, and both side plates are connected by dismantling metal fittings in order to remove it from the foam after foaming is completed.
しかして、前記の如く構威された外型Ａと内型Ｂを使用
し、内型Ｂを外型Ａ内に嵌入するにあたって（・１、内
型Ｂを縮小せしめた状態で嵌入する。Therefore, when using the outer mold A and inner mold B configured as described above, and fitting the inner mold B into the outer mold A (1), insert the inner mold B in a reduced state.
この状態は第４図の平面図に明記されている如くであり
、中央部に発泡体原液を注入．収容する空間ａが形威さ
れ、その左右図では上下に図の矢印間隔を有する発泡体
の気泡を膨脹させるために必要な空間ｂが作られる。This state is clearly shown in the plan view of Figure 4, and the foam stock solution is injected into the center. A accommodating space a is formed, and a space b necessary for expanding the bubbles of the foam having the distance between the arrows in the upper and lower sides in the left and right views is created.
この場合、中央部の空間ａの面積は全拡張の場合の１／
３〜１／４位が気泡の膨脹及び内型８の？閉操作の而か
らみて適当である。In this case, the area of the central space a is 1/1 of that in the case of full expansion.
3 to 1/4 of the bubbles are expanding and the inner mold is 8? This is appropriate considering the closing operation.
第５図は前記の如き外型Ａ、内型Ｂを使用して、発泡操
作を行なわせる場合の装置の構或を示しており、底板４
士には特に厚さが５〜１０ｍｍ．位のクッション材９が
予め張り合わされ、その士にスペーサ−５が取り付けら
れている。FIG. 5 shows the structure of an apparatus for carrying out a foaming operation using the outer mold A and inner mold B as described above.
In particular, the thickness is 5 to 10 mm. Two cushioning materials 9 are pasted together in advance, and a spacer 5 is attached between them.
しかも、更に側壁３底板４を被ってそれらの面に離型紙
１０が使用され、内型Ｂの繰り返し使用の便宜を図って
いる。Moreover, a release paper 10 is further used on these surfaces to cover the side walls 3 and the bottom plate 4, thereby facilitating repeated use of the inner mold B.
側壁３あるいは底板４の材質は随時、適宜材刺の使用か
り能であるが、一般的には１５ｉｍ程度の合板又は同等
の強度を持つ金属板が用いられる。The material of the side wall 3 or the bottom plate 4 may be any suitable material, but generally plywood of about 15 mm or a metal plate of equivalent strength is used.
また、スペーサ−５の厚みも５關程度とすることで充分
である。Furthermore, it is sufficient that the thickness of the spacer 5 is approximately 5 mm.
ｌ〜かして、第５図に図示寸る如く内型Ｂの伺１壁３に
は外面に接して保持板１２′が設けられており、型拡大
機構１２の作動によって、内型Ｂの拡大移動のタイミン
グを図っている。As shown in FIG. We are planning the timing of the expansion move.
この型拡大機構１２は図においては外型Ａの側片を貫通
して取り付けられているが、外型Ａぱ単にこれを支持し
得る側粋のみでもよく、又、その機構は油圧式、ねじ式
などが使用可能である。In the figure, this mold enlarging mechanism 12 is attached to pass through the side piece of the outer mold A, but the outer mold A may be simply attached to a side piece that can support it, and the mechanism may be a hydraulic type or a screw type. Equations etc. can be used.
この型拡大機構１２の作動は注入空間ａの上部所定高さ
位置に、設けられた発泡体の表面高さ検知機構１１、例
えばリミットスイッチの如き接触検知方式の検知機構等
によって関連づけられてかり、側壁３を一方向、即ちＸ
方向に拡大させる。The operation of the mold enlarging mechanism 12 is related to the foam surface height detection mechanism 11 provided at a predetermined height position above the injection space a, for example, a contact detection type detection mechanism such as a limit switch. side wall 3 in one direction, i.e.
Expand in the direction.
検知機構１１の設置高さは経１験的に発泡体の最終高さ
の８０〜９０％に位置するのが好適であんまた、この検
知機構１１ぱ発泡体が検知機構１１と型拡大機構１２の
連動により自動的に作動し、内型Ｂが拡大し、その発泡
体が硬化後直ちに取り除き得るよう回動あるいは上下に
移動可能にしても−＜ことが好ましい。From experience, it is preferable that the installation height of the detection mechanism 11 is located at 80 to 90% of the final height of the foam. Preferably, the inner mold B is expanded and the foam can be rotated or moved up and down so that it can be removed immediately after hardening.
以上の如くにして構威されている外型Ａと内型Ｂとを使
用し、各整備を終了後、本発明方法が実施されるが、以
下に本発明方法をポリウレタン発泡体の具体的な製造工
程によって説明すると、先ず、第６図に図示した如く最
終容積第８図の空間を充満するに要する充分なポリウレ
タン発泡原液を混合撹拌して空間ａに注入する。Using the outer mold A and inner mold B constructed as described above, the method of the present invention is carried out after completing each maintenance. To explain the manufacturing process, first, as shown in FIG. 6, sufficient polyurethane foam stock solution to fill the final volume of the space shown in FIG. 8 is mixed and stirred and injected into space a.
しかるときは数秒から数分後には混合液はクリーム状と
なり発泡を開始する。When this happens, the mixture becomes creamy and starts foaming after a few seconds to a few minutes.
そして前記空間ａの上部に設置されたりットスイッチの
如き検知機構１１にまで発泡体が膨脹してくる。Then, the foam expands to a detection mechanism 11, such as a switch, installed above the space a.
この工程までは、従来の発泡体製造方法と格別異なると
ころはなく、出来ている気泡も亦、楕円形状であるが、
液はまだ流動性を有してしる。Up to this step, there is no particular difference from conventional foam manufacturing methods, and the bubbles formed are also oval in shape.
The liquid will still have fluidity.
検知機構１１まで発泡してきた発泡体は次に第７図に図
示した如く型拡大機構１２が夫々外方へ摺動｛〜でそれ
に応じて内型Ｈの側壁３は発泡体の高さを検知機構で確
かめ、一定に保ちながら一方向開いて行き、さきの発泡
体の発泡方向、即ちＺ方向から矢印の如きＸ方向の発泡
一＼と変わり、発泡体の気泡の笠方性が始まって行く。The foam that has expanded to the detection mechanism 11 is then slid outward by the mold enlarging mechanism 12 as shown in FIG. 7, and the side wall 3 of the inner mold H detects the height of the foam accordingly. Confirmed by the mechanism, it opens in one direction while keeping it constant, and changes from the previous foaming direction of the foam, that is, the Z direction, to foaming in the X direction as shown by the arrow, and the bubbles of the foam begin to form. .
そｌ〜で、このＸ方向の発泡を側壁３が内型全面の状態
になるまで続ける。Then, foaming in the X direction is continued until the side wall 3 covers the entire surface of the inner mold.
（第８図参照）かくして完全に肉眼で見て発泡体がもう
発泡［ーでいない状態になれば製品として型内より取り
出す。(See Figure 8) When the foam is completely no longer foamed to the naked eye, it is removed from the mold as a product.
かくして得られた発泡体製品は、その方向への移行、殊
に検知機構と連動せる型拡大機構の自動的移動により気
泡の形状は次第に等方性となり、縦．横両方向に対して
均一な物性を有するポリウレタン発泡体を得ることがで
きると共に発泡体側面自体には発泡圧が加わりにくいた
めに発泡体の離型時間も頗る短縮される。In the foam product thus obtained, the shape of the bubbles gradually becomes isotropic due to the movement in that direction, especially the automatic movement of the mold expansion mechanism that can be linked with the detection mechanism, and the shape of the bubbles becomes vertical. A polyurethane foam having uniform physical properties in both lateral directions can be obtained, and since foaming pressure is not easily applied to the sides of the foam itself, the mold release time of the foam can be significantly shortened.
例えば、従来の製造方法では、得られた発泡体は発泡完
了後、室温で２０〜６０分間位発泡容器に入れたままの
状態にしておかないと、離型時に発泡体側面に加わって
いる内部応力により発泡体に割れが生じたが、本発明に
よる場合には、発泡完了後、１〜２分後に離型しても、
発泡体に割れは生じることがなかった。For example, in conventional manufacturing methods, the foam obtained must be left in the foaming container at room temperature for about 20 to 60 minutes after foaming is completed, otherwise the internal parts that are attached to the sides of the foam will be removed. Cracks occurred in the foam due to stress, but in the case of the present invention, even if the mold was released 1 to 2 minutes after completion of foaming,
No cracks occurred in the foam.
そのため、本発明を利用するときは、発泡容器の数が従
来に比べて１／１０以下で済む利点を有する。Therefore, when using the present invention, there is an advantage that the number of foaming containers can be reduced to 1/10 or less compared to the conventional method.
上記の説明にむいては、本発明の装置に使用する型（モ
ールド）どして第３図及び第４図に図示した如きモール
ドを使用した場合について述べているが、モールドとし
ては上記のものに限るものではなく、同様な目的で作威
された種々のものを用いることができる。In the above explanation, the case is described in which the mold used in the device of the present invention is as shown in FIGS. 3 and 4. The present invention is not limited to this, and various products designed for the same purpose can be used.
次に、本発明の具体的な実施例を掲げる。Next, specific examples of the present invention will be listed.
実施例 １
先ず、次の如き配合になる５種類の配合液（Ａ液）を調
製した。Example 1 First, five types of mixed liquids (liquid A) having the following formulations were prepared.
そして、次に前記Ａ液の合計に夫々Ｂ液としてプレポリ
マー（シュークローズポリエーテル・イソシアネート系
）を１３０部の比率で混合撹拌して５種類の比重の異な
るポリウレタン発泡体を製造１〜、各々について物性の
比較を行なった。Next, 130 parts of a prepolymer (sucrose polyether isocyanate type) is mixed and stirred as a liquid B into the total of the liquid A to produce five types of polyurethane foams with different specific gravity. We compared the physical properties of the two.
その結果を示すと次表の通りであった。The results are shown in the table below.
本 表中、（ＡＩ ）は従来技術によって製造したポリ
ウレタン発泡体であり、（２）〜（５）は何れも本発明
により製造したポリウレタン発泡体である。In this table, (AI) is a polyurethane foam manufactured by a conventional technique, and (2) to (5) are all polyurethane foams manufactured according to the present invention.
なお、試料とした発泡体寸法は５ ０ ０ Ｘ １００
０Ｘ２０００ｍ／ｍである。The dimensions of the foam sample were 500 x 100
0x2000m/m.
実施例 ２
先ず、次の如き配合割合にて配合液を調製しねボリエー
テル（了ロマチイツク系ＯＨ価３８０） ３０部ポリ
エーテル（シュークローズ千〇Ｈ価４５０） ７ｏ部
界面活性剤（シリコン）
水
アミン系触媒
発泡剤（フロン１１）
１部
３部
ｌ部
７０部
１７５部
次いで、上記の如き配合液に対しプレポリマー（シュー
クローズポリエーテル・イソシア不一ト系）を１６２部
の割合で混合撹拌して、従来法と本発明方法により夫々
ポリウレタン発泡体を製造＊＊した。Example 2 First, a compounded liquid was prepared with the following proportions: polyether (OH value 380), 30 parts polyether (sucrose 1,000H value 450), 7 parts surfactant (silicon), water amine type Catalytic blowing agent (Freon 11) 1 part 3 parts 1 part 70 parts 175 parts Next, 162 parts of a prepolymer (sucrose polyether isocyanate type) was mixed and stirred into the above-mentioned mixed solution. Polyurethane foams were produced by the conventional method and the method of the present invention.
かくして得られた両方法による発泡体の物性の比較を行
なったところ、次表の如き結果であつね上表より本発明
によるポリウレタン発泡体の物性は発泡方向と直角方向
において、従来法によるものより優れていること、即ち
等方性に近い気泡発泡体が得られたことが理解される。When the physical properties of the foams obtained by both methods were compared, the results are shown in the table below.The table above shows that the physical properties of the polyurethane foam of the present invention are superior to those obtained by the conventional method in the direction perpendicular to the foaming direction. It can be seen that an excellent, ie, nearly isotropic cellular foam was obtained.
また以上の説明ではＺ方尚の発泡がある高さに達したと
きに始めて検知機構１１が作動し、これと関連させてＸ
方向への型拡大機構を作動させて気泡を有する発泡体を
製造する例を示したが、本発明の最犬の特徴は従来技術
のような発泡内圧等によることなくＺ方尚の発泡高さ乃
至は発泡速度に関連させてＸ方向への型拡大機構を積極
的に作動せしめる点にあり、従って下記のような変形実
施態様も当然本発明に含まれる。In addition, in the above explanation, the detection mechanism 11 is activated only when the foaming in the Z direction reaches a certain height, and in conjunction with this, the detection mechanism 11 is activated.
Although an example was shown in which a foam with bubbles is manufactured by operating a mold expansion mechanism in the direction, the most important feature of the present invention is that the foaming height in the Z direction can be increased without using the foaming internal pressure as in the prior art. Another point is that the mold expanding mechanism in the X direction is actively operated in relation to the foaming speed, and therefore, the following modified embodiments are naturally included in the present invention.
その一例としては、例えば発泡開始と同時に又はやや遅
れてＺ方向への発泡高さを検知しながらこれと関連せし
めて型拡大機構の作動を開始させることである。One example of this is to start the operation of the mold enlarging mechanism in conjunction with, for example, detecting the foaming height in the Z direction at the same time as the foaming starts or after a slight delay.
この場合の検知機構１１は前に説明した場合と異なり、
Ｚ方向への発泡の進行につれて共に上昇しながらこれと
関係させて型拡大機構１２を作動させるようにするが、
Ｚ方向所定高さに達した時点でそれ以上の−ヒ昇を止め
、以後は前の説明のようになお検知機構１１が気泡体の
表面に接している期間中、型拡大機構１２を作動し続け
させるようにしてもよい。The detection mechanism 11 in this case is different from the case described above,
As the foaming progresses in the Z direction, the mold expanding mechanism 12 is operated in conjunction with this while rising.
When the predetermined height in the Z direction is reached, further elevation of the temperature is stopped, and thereafter, as described above, the mold enlarging mechanism 12 is operated while the detection mechanism 11 is still in contact with the surface of the bubble. You may also allow it to continue.
発泡終了時点で型の側壁３は第３図のように完全な拡大
状態よりもやや内側に屈曲された状態であるように条件
を設定してもよい。Conditions may be set so that at the end of foaming, the side wall 3 of the mold is in a state slightly bent inward rather than in a completely expanded state as shown in FIG.
更に本発明の他の実施態様として予め試行等によりＺ方
尚の発泡高さの上昇に関連させて設定された条件のもと
て発泡開始後、型拡大機構１２を独自に作動せしめるよ
うにすることもできる。Furthermore, as another embodiment of the present invention, the mold enlarging mechanism 12 is operated independently after foaming starts under conditions set in advance by trial etc. in relation to the increase in the foaming height of the Z-direction. You can also do that.
これをプログラム制御の方式で行なうことも可能である
。It is also possible to do this by program control.
この場合、前記のように直接Ｚ方尚の発泡高さを検知し
なから型拡大機構を作動せしめる方式と比してやや精度
が劣るが、環境の温度及び湿塵、発泡性原液の品質の管
理等を充分に行なうことにより所望の泡構造の発泡体と
する精度を高めることができる。In this case, although the accuracy is slightly lower than the method described above in which the mold expansion mechanism is activated without directly detecting the foaming height in the Z direction, it is possible to control the environmental temperature, damp dust, and the quality of the foaming stock solution. By sufficiently carrying out the above steps, it is possible to improve the accuracy of forming a foam having a desired foam structure.
以上の如き本発明により得られる発泡体は、低密度（０
．０２５以下）である上、優れた物理的性質を有し、特
に寸法安定性が極めて高いものであり、各種の断熱材と
して最適で、かつ、安価、経済的な断熱施工が可能とな
る。The foam obtained by the present invention as described above has a low density (0
．． 025 or less) and has excellent physical properties, especially extremely high dimensional stability, making it optimal as a variety of heat insulating materials and enabling low-cost, economical insulation construction.
その断熱材としての形状も平板状、立方体状、断面円弧
状等、如何なる形状にも成型できることはいうまでもな
い。Needless to say, the heat insulating material can be formed into any shape, such as a flat plate, a cube, or an arcuate cross section.
また、他の材料と積層してサンドイツチ状の断熱材にも
応用されるが、これは本発明により得られる発泡体の表
面の少くとも一面に紙、プラスチックシ一ト、合板、ア
スベスト板、金属箔等の表面材を積層することができる
ので、本発明は大変有用、かつ広範囲な活用が期待でき
る。It can also be applied to a sandwich-like insulation material by laminating it with other materials, in which paper, plastic sheet, plywood, asbestos board, metal, etc. Since surface materials such as foils can be laminated, the present invention is expected to be very useful and to be widely used.
第１図は従来の発泡体にトける気泡の自由発泡方向断面
図、第２図は本発明の一例にむける発泡容器の外型の概
要斜視図、第３図は本発明の要部である内型の斜視図、
第４図は内型を縮小して外型内に嵌大した状態の平面図
、第５同は発泡体原液注入直前の内型と外型との取付状
態を示す部分断面図、第６図、第７図、第８図は本発明
方法により発泡体を製造する工程を順序的に示す図であ
る。
Ａ・・・・・・外型、Ｂ・・・・・・内型、１・・・・
・・外型側板、３・・・・・・内型側壁、４・・・・・
・内型底板、５・・・・・・スペ・−サ１１・・・・・
・検知機構、１２・・・・・・型拡犬機構。Fig. 1 is a sectional view in the direction of free foaming of bubbles in a conventional foam, Fig. 2 is a schematic perspective view of an outer mold of a foam container according to an example of the present invention, and Fig. 3 is a main part of the present invention. Perspective view of the inner mold,
Fig. 4 is a plan view of the inner mold reduced in size and fitted into the outer mold; Fig. 5 is a partial sectional view showing the state in which the inner mold and outer mold are attached just before injection of the foam stock solution; Fig. 6; , FIG. 7, and FIG. 8 are diagrams sequentially showing the steps of manufacturing a foam according to the method of the present invention. A: Outer mold, B: Inner mold, 1…
...Outer mold side plate, 3...Inner mold side wall, 4...
・Inner mold bottom plate, 5... Spacer 11...
・Detection mechanism, 12...type dog expansion mechanism.
Claims (1)
連させて該自由発泡方向と垂直な一方向にのみ型を拡大
させ積極的に気泡を膨脹させることを特徴とするポリイ
ソシアネート系発泡体の製造方法。1. A polyisocyanate system characterized by automatically detecting the foaming height of free foaming and expanding the mold only in one direction perpendicular to the free foaming direction in relation to this to actively expand the bubbles. Method of manufacturing foam.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50111453A JPS5848338B2 (en) | 1975-09-12 | 1975-09-12 | Polyisocyanate Polyisocyanate Narabini Sonosouchi |
| AU85964/75A AU483052B2 (en) | 1975-09-12 | 1975-10-23 | A polyisocyanate foam having isotropic cells and method and apparatus therefor |
| DE2547549A DE2547549C3 (en) | 1975-09-12 | 1975-10-23 | Method and device for producing a polyisocyanate foam |
| GB43901/75A GB1505286A (en) | 1975-09-12 | 1975-10-24 | Polyisocyanate foam having isotropic cells and method and apparatus therefor |
| CA75238253A CA1048699A (en) | 1975-09-12 | 1975-10-24 | Polyisocyanate foam having isotropic cells and method and apparatus therefor |
| FR7532971A FR2323518A1 (en) | 1975-09-12 | 1975-10-28 | METHOD AND APPARATUS FOR MANUFACTURING POLYISOCYANATE FOAM WITH ISOTROPIC CELLS |
| IT28796/75A IT1043738B (en) | 1975-09-12 | 1975-10-29 | POLYTHOCYANATE FOAM WITH ISOTROPIC CELLS AND METHOD AND APPARATUS TO OBTAIN IT |
| US05/872,678 US4160074A (en) | 1975-09-12 | 1978-01-26 | Polyisocyanate foam having isotropic cells and method and apparatus for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50111453A JPS5848338B2 (en) | 1975-09-12 | 1975-09-12 | Polyisocyanate Polyisocyanate Narabini Sonosouchi |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5235296A JPS5235296A (en) | 1977-03-17 |
| JPS5848338B2 true JPS5848338B2 (en) | 1983-10-27 |
Family
ID=14561594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50111453A Expired JPS5848338B2 (en) | 1975-09-12 | 1975-09-12 | Polyisocyanate Polyisocyanate Narabini Sonosouchi |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5848338B2 (en) |
| CA (1) | CA1048699A (en) |
| DE (1) | DE2547549C3 (en) |
| FR (1) | FR2323518A1 (en) |
| GB (1) | GB1505286A (en) |
| IT (1) | IT1043738B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4104346A (en) * | 1976-07-29 | 1978-08-01 | The Upjohn Company | Process for molding a substantially isotropic isocyanate-based polymer foam bun |
| DE2929165C2 (en) * | 1979-07-19 | 1981-12-24 | Röhm GmbH, 6100 Darmstadt | Process for the production of a foam board |
| JPS63160809A (en) * | 1986-12-25 | 1988-07-04 | Human Ind Corp | Batch type forming equipment for urethane foam slab |
| DE102008007078B3 (en) * | 2008-01-31 | 2009-05-28 | Bayer Materialscience Ag | Method for discontinuously producing a block foam material e.g. polyurethane foam material, comprises introducing a container on a base of a molding box, and filling the container with reaction components and then removing the container |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5250060A (en) * | 1975-10-20 | 1977-04-21 | Kyowa Shinku Gijutsu Kk | Vacuum defreezing process for freezed substance and its apparatus |
-
1975
- 1975-09-12 JP JP50111453A patent/JPS5848338B2/en not_active Expired
- 1975-10-23 DE DE2547549A patent/DE2547549C3/en not_active Expired
- 1975-10-24 GB GB43901/75A patent/GB1505286A/en not_active Expired
- 1975-10-24 CA CA75238253A patent/CA1048699A/en not_active Expired
- 1975-10-28 FR FR7532971A patent/FR2323518A1/en active Granted
- 1975-10-29 IT IT28796/75A patent/IT1043738B/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5250060A (en) * | 1975-10-20 | 1977-04-21 | Kyowa Shinku Gijutsu Kk | Vacuum defreezing process for freezed substance and its apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2323518B1 (en) | 1979-04-06 |
| CA1048699A (en) | 1979-02-13 |
| DE2547549C3 (en) | 1979-05-10 |
| FR2323518A1 (en) | 1977-04-08 |
| DE2547549B2 (en) | 1978-09-21 |
| DE2547549A1 (en) | 1977-03-24 |
| JPS5235296A (en) | 1977-03-17 |
| AU8596475A (en) | 1977-05-19 |
| IT1043738B (en) | 1980-02-29 |
| GB1505286A (en) | 1978-03-30 |
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