JPS6234527B2 - - Google Patents
Info
- Publication number
- JPS6234527B2 JPS6234527B2 JP54138358A JP13835879A JPS6234527B2 JP S6234527 B2 JPS6234527 B2 JP S6234527B2 JP 54138358 A JP54138358 A JP 54138358A JP 13835879 A JP13835879 A JP 13835879A JP S6234527 B2 JPS6234527 B2 JP S6234527B2
- Authority
- JP
- Japan
- Prior art keywords
- foaming
- raw material
- synthetic resin
- foam
- mold
- 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
- 239000002994 raw material Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 35
- 239000006260 foam Substances 0.000 claims description 34
- 238000005187 foaming Methods 0.000 claims description 27
- 229920003002 synthetic resin Polymers 0.000 claims description 20
- 239000000057 synthetic resin Substances 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 239000006071 cream Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 241000246358 Thymus Species 0.000 description 1
- 235000007303 Thymus vulgaris Nutrition 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 229920000582 polyisocyanurate Polymers 0.000 description 1
- 239000011495 polyisocyanurate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- -1 straight boards Substances 0.000 description 1
- 239000001585 thymus vulgaris Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明は表、裏面材間に均質な発泡組織の合成
樹脂発泡体を形成した断熱複合板の製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a heat insulating composite board in which a synthetic resin foam with a homogeneous foam structure is formed between front and back materials.
従来第１図に示すような構造のパネルを製造す
る場合、一般に例えばポリウレタン樹脂のような
熱硬化性合成樹脂原料（液状）を外装材１の背面
凹所の適宜位置、通常は中心位置にパイプ状のノ
ズルから注入的に一個所に集中的に吐出し、その
上に次第に裏面材２を積層せしめ、これをキヤタ
ピラ方式、スチールベルト方式等の型に供給し、
一定厚さに押圧、加圧することにより、凹所空隙
を合成樹脂発泡体３で充填するか、注入方法の代
わりにスプレーガン特を用いて原料の分布を拡大
した二次式が主に採用されていた。 Conventionally, when manufacturing a panel with the structure shown in FIG. 1, a thermosetting synthetic resin raw material (liquid) such as polyurethane resin is generally placed in a pipe at an appropriate position in the recess on the back of the exterior material 1, usually at the center. It is concentratedly discharged in one place from a shaped nozzle, the backing material 2 is gradually laminated on top of it, and this is fed to a mold such as a caterpillar method or a steel belt method,
A quadratic method is mainly used, in which the cavity cavity is filled with synthetic resin foam 3 by pressing and pressurizing it to a constant thickness, or the distribution of the raw material is expanded by using a spray gun instead of the injection method. was.
換言すれば、従来方式はいずれもが外装材背面
に吐出された原料をその吐出された位置およびそ
の流動によつて拡がつた領域内で反応→発泡膨脹
している最中、所謂発泡組織形成中に発泡組織を
破壊するように強制的に吐出された位置における
余剰な原料分を上下左右に流動させて凹所の原料
不存在部分に充填せしめ凹所全体を合成樹脂発泡
体で満たす方法であつた。そのためこの種方法に
は下記する諸点において種々の不利、不都合があ
つた。すなわち、○イ原料は短時間で反応、発泡、
硬化し、かつ吐出された位置の堆積層と接触部位
の温度等によつて反応状態が千差万別なため相当
に発泡してから分布を平均化しても均質発泡組織
を形成することが困難である。○ロ原料の粘度と発
泡剤の気化のタイミングのバランスがくずれるた
め発泡剤が有効に利用できず発泡倍率が低下す
る。○ハ発泡途中で上下左右に流動されるため気泡
の大きさ、膜厚とその形状および分布がランダム
となり、境界層の形成や発泡組織の密度の不均一
などにより、断熱性、機械強度が大幅に低下す
る。○ニ不均一気泡のため温度に対する伸縮がバラ
バラで寸法安定に欠けると共に低温域では収縮が
生じる。○ホ発泡途中に発泡組織を破壊するように
流動するための発泡剤が外気に漏洩し、作業環境
の低下と樹脂の発泡倍率の低減を引きおこす等の
欠点があつた。 In other words, in all conventional methods, the raw material discharged onto the back surface of the exterior material is reacted at the discharged position and within the area expanded by the flow, resulting in the formation of a so-called foamed structure during foaming and expansion. This is a method in which the excess raw material at the position where it is forcibly discharged to destroy the foam structure is flowed up, down, left and right, filling the part of the recess where no raw material is present, and filling the entire recess with synthetic resin foam. It was hot. Therefore, this type of method has various disadvantages and inconveniences in the following points. In other words, the raw material ○A reacts, foams, and
It is difficult to form a homogeneous foamed structure even after foaming considerably and then averaging the distribution because the reaction state varies greatly depending on the temperature of the deposited layer and the contact area after hardening and discharge. It is. ○B The balance between the viscosity of the raw material and the timing of vaporization of the blowing agent is disrupted, so the blowing agent cannot be used effectively and the foaming ratio decreases. ○During foaming, the bubbles flow vertically and horizontally, making the bubble size, film thickness, shape, and distribution random, resulting in the formation of a boundary layer and non-uniform density of the foam structure, which greatly reduces insulation and mechanical strength. decreases to ○D.Due to non-uniform bubbles, the expansion and contraction with temperature varies, resulting in dimensional stability and shrinkage in low temperature ranges. ○During foaming, the foaming agent used to flow to destroy the foam structure leaked into the outside air, resulting in a deterioration of the working environment and a reduction in the foaming ratio of the resin.
本発明はこのような欠点を除去するため、合成
樹脂発泡体原料を外装材背面に吐出した直後、所
謂発泡組織形成前の状態のときに発泡体形成面積
の約80％程度に平均に原料を分散せしめ、次に反
応発泡途中のゲルタイム初期状態のときに残りの
不足分散域を体積膨脹分でカバーし、かつフリー
発泡的に発泡した発泡組織の気泡（セル）が発泡
方向（上方）に長軸をとつた楕円形状を押圧によ
つて短軸が長軸になつた楕円形に修正せしめ、次
に型内に到達するまでの間に発泡圧等によつて
徐々に変形し、型内の入口部分、所謂ゲルタイム
中、あるいは末期の状態で凹所容積を発泡体で全
部（100％）充填すると共にセル（気泡）の形状
を球体にした均質発泡組織体となし、断熱性と機
械強度と発泡倍率の向上を図つた断熱複合板の製
造方法を提案する。 In order to eliminate such drawbacks, the present invention applies the raw material to about 80% of the foam forming area on average immediately after the synthetic resin foam raw material is discharged onto the back surface of the exterior material, before the so-called foam structure is formed. Then, during the initial state of gel time during reaction foaming, the remaining insufficient dispersion region is covered by the volume expansion, and the cells of the foamed structure that are foamed in a free foaming manner are elongated in the foaming direction (upward). The elliptical shape with the axis is corrected by pressing into an ellipse with the short axis becoming the long axis, and then it is gradually deformed by foaming pressure etc. until it reaches the inside of the mold. At the entrance, during the so-called gel time, or at the final stage, the recess volume is completely (100%) filled with foam, and the cells (bubbles) are spherical in shape to form a homogeneous foam structure, which improves heat insulation and mechanical strength. We propose a manufacturing method for heat-insulating composite boards that improves the expansion ratio.
以下に図面を用いて本発明に係る断熱複合板の
製造方法を詳細に説明する。第２図は上記方法の
実施に供する装置の要部のみを示す説明図であ
る。なお第１図と相応する部分は同一番号、符号
を付する。図において、４は搬送機構で複数個の
ローラ５あるいはチエーン、ベルト（図示せず）
からなり、これが所定形状に成形された外装材１
を次工程へ搬送する。ａは吐出機で合成樹脂発泡
体３の原料６を外装材１の背面に注入方式あるい
は吹付式もしくは特願昭53−114204号の方式を用
いて吐出する。７は分散用ローラで金属、木質、
硬質ゴム、合成樹脂もしくは適度の弾性を有する
ゴム、スポンジ等からなる。なお、分散用ローラ
７の長さは外装材１の背面の開口もしくは目的に
応じて設定する。この分散用ローラ７は主に外装
材１の背面と裏面材２間の所定ギヤツプΔＧ（第
４図ｃに示す）を原料６の吐出量と原料６の反応
状態によつて合成樹脂発泡体３の形成面積の80％
程度を円滑に分散するためのものである。８は修
正用ローラで上記分散用ローラ７と同質部材、
幅、長さを有するものであり、主に気泡（セル）
構造における形状の修正と不均一セル径の均一化
を強制的に行うものである。付随的に分散率の不
足分、例えば分散用ローラ７の位置で80％程度に
分散させるため、修正用ローラ８の位置までの間
に約10〜15％は原料６の反応、発泡時の流動性に
よつてカバーされるが、それでも不足するときひ
これを補足する。ここでセルの修正について詳説
すると、外装材１上の原料６は分散用ローラ７の
位置を通過した後、左右側壁と背面以外はフリー
発泡状態となり、発泡方向が殆ど上方に向かう。
従つて気泡（セル）構造は長軸をＹ軸に採つた楕
円形となる。従つて、セルの形状は長軸をＹ軸に
とつた楕円形となる。このセル形状を修正用ロー
ラ８によつてＸ軸方向に楕円形の長軸が該当する
ように押圧する。換言すれば、全発泡体積分の2/
５〜3/5（40〜70％）を体積を変えずにセル構造の
長軸（Ｙ軸と平行）を90゜（Ｘ軸上）に回転せし
めたように変化させ、最終セル構造における球状
化の下地となりうるような形状とセル直径の不均
一の矯正を初期段階において行うためのものであ
る。９はキユアオーブンで、例えばキヤタピラー
式あるいはスチールベルトからなる上下型材１
０，１１と原動輪１２，１３と従動輪１４，１５
と温度制御装置１６，１７とからなる。このキユ
アオーブン９は複合板の合成樹脂発泡体３を所定
厚さ、形状に連続的に押圧すると共にその入口部
分で充填容積の不足分、所謂20〜10％を補充して
合成樹脂発泡体３の充填率を100％にする。その
後、キユアオーブン９の中間ではライブタイムＣ
に反応を到達させる。なお、場合によつては後半
で養生期間Ｄの工程を入れることもある。また補
充率を20〜10％にしたのは、修正用ローラ８を通
過した後キユアオーブン９に到達するまでの間に
相当に反応、発泡が急激な状態下にあるため充填
用容積の10〜20％を補充することになるからであ
る。またこの状態では原料６吐出時と異なり、原
料６自体の体積が大きく増大しているためあまり
大きくない発泡でも補充率を大幅に上昇する結果
となる。さらにこのキユアオーブン９は矢印方向
に間隔ｔを有して約５〜40ｍ／minの速度で回転
すると共に雰囲気が約40〜90℃、型自体の温度が
40〜10℃に設定できるものである。ここで前記し
た外装材１、裏面材２および合成樹脂発泡体３に
ついて簡単に言及すると、改装材１としては金属
板、例えばカラー鉄板、アルミニウム、ステンレ
ス板、銅板のように成形容易な薄板体あるいは合
板、ストレート板、石膏ボート等を用いる。もち
ろん表面、所謂化粧面の表、背面が平滑であつた
り、任意深さの凹凸状模様を形成した部材等を使
用できる。また断面形状は樋状に限らず平板状で
あつたり、任意の雄雌構造を設けけた外装材の場
合もある。裏面材２としてはクラフト紙、アスベ
スト紙、アスフアルトフエルト、金属箔、合成樹
脂フイルム、合成紙、ネツト状物の一種もしくは
二種以上をラミネートした可撓性のあるシート状
物あるいは防水処理を施した紙類もしくは外装材
１と同じような金属薄板の場合もある。その他、
裏面材２の幅は凹所開口W1と同じあるいは化粧
面幅Ｗ以上の大きさ等任意である。また合成樹脂
発泡体３としてはポリウレタンフオーム、ポリイ
ソシアヌレートフオーム、ポリウレアフオーム、
フエノールフオーム、塩化ビニルフオーム等であ
る。 EMBODIMENT OF THE INVENTION Below, the manufacturing method of the heat insulating composite board based on this invention is demonstrated in detail using drawings. FIG. 2 is an explanatory diagram showing only the main parts of the apparatus used for carrying out the above method. Note that parts corresponding to those in FIG. 1 are given the same numbers and symbols. In the figure, reference numeral 4 denotes a conveyance mechanism including a plurality of rollers 5, a chain, or a belt (not shown).
The exterior material 1 is formed into a predetermined shape.
is transported to the next process. A is a discharge machine which discharges the raw material 6 for the synthetic resin foam 3 onto the back surface of the exterior material 1 using an injection method, a spray method, or the method disclosed in Japanese Patent Application No. 114204/1983. 7 is a dispersion roller for metal, wood,
Made of hard rubber, synthetic resin, rubber with appropriate elasticity, sponge, etc. Note that the length of the dispersion roller 7 is set depending on the opening on the back side of the exterior material 1 or the purpose. This dispersing roller 7 mainly adjusts the predetermined gap ΔG (shown in FIG. 4c) between the back surface material 1 and the back surface material 2 to the synthetic resin foam 3 depending on the discharge amount of the raw material 6 and the reaction state of the raw material 6. 80% of the forming area of
This is to smoothly distribute the degree of damage. 8 is a correction roller made of the same material as the dispersion roller 7;
It has width and length, and is mainly made of air bubbles (cells).
This is to forcibly correct the shape of the structure and make the non-uniform cell diameter uniform. Incidentally, in order to disperse the insufficient dispersion rate, for example, about 80% at the position of the dispersion roller 7, about 10 to 15% is due to the reaction of the raw material 6 and the flow during foaming until the position of the correction roller 8. Although it is covered by sex, when it is still lacking, it is supplemented by this. Here, the modification of the cells will be explained in detail. After the raw material 6 on the exterior material 1 passes the position of the dispersion roller 7, the raw material 6 on the exterior material 1 enters a free foaming state except for the left and right side walls and the back surface, and the foaming direction is mostly directed upward.
Therefore, the bubble (cell) structure has an elliptical shape with the long axis being the Y axis. Therefore, the shape of the cell is an ellipse with the long axis along the Y axis. This cell shape is pressed by a correction roller 8 in the X-axis direction so that the long axis of the ellipse corresponds to the shape. In other words, 2/ of the total foaming volume
5 to 3/5 (40 to 70%) is changed by rotating the long axis of the cell structure (parallel to the Y axis) by 90 degrees (on the X axis) without changing the volume, resulting in a spherical shape in the final cell structure. This is to correct non-uniformities in shape and cell diameter at an early stage, which could serve as a basis for further development. 9 is a cure oven, for example, upper and lower mold members 1 made of a caterpillar type or a steel belt.
0, 11, driving wheels 12, 13 and driven wheels 14, 15
and temperature control devices 16 and 17. This cure oven 9 continuously presses the synthetic resin foam 3 of the composite plate into a predetermined thickness and shape, and replenishes the insufficient filling volume, so-called 20 to 10%, at the inlet part to fill the synthetic resin foam 3. Set the filling rate to 100%. After that, in the middle of Cure Oven 9, Live Time C
reach a reaction. In some cases, a curing period D step may be included in the latter half. The reason why the replenishment rate was set at 20-10% is because after passing through the correction roller 8 until reaching the cure oven 9, there is a considerable reaction and rapid foaming, so 10-20% of the filling volume This is because it means replenishing the amount. Further, in this state, unlike when the raw material 6 is discharged, the volume of the raw material 6 itself has greatly increased, so even if the foaming is not very large, the replenishment rate will be significantly increased. Furthermore, this cure oven 9 rotates at a speed of about 5 to 40 m/min with an interval t in the direction of the arrow, and the atmosphere is about 40 to 90°C, and the temperature of the mold itself is
It can be set at 40-10℃. To briefly mention the exterior material 1, back material 2, and synthetic resin foam 3 described above, the renovation material 1 may be a thin sheet material that is easy to mold, such as a metal plate, for example, a colored iron plate, aluminum, stainless steel plate, or copper plate. Use plywood, straight boards, plaster boats, etc. Of course, it is possible to use a member whose surface, the so-called decorative surface, is smooth or has an uneven pattern of arbitrary depth. Further, the cross-sectional shape is not limited to a gutter shape, but may be a flat plate shape, or an exterior material having an arbitrary male and female structure. The backing material 2 is a flexible sheet-like material laminated with one or more types of kraft paper, asbestos paper, asphalt felt, metal foil, synthetic resin film, synthetic paper, and net-like materials, or is waterproof-treated. It may also be paper or a thin metal plate similar to the exterior material 1. others,
The width of the back material 2 is arbitrary, such as the same as the recess opening W1 or greater than the decorative surface width W. Further, as the synthetic resin foam 3, polyurethane foam, polyisocyanurate foam, polyurea foam,
These include phenol foam and vinyl chloride foam.
次に本発明に係る断熱複合板の製造方法の一実
施例について詳細に説明する。いま第１図に示す
ような断面の複合板を製造するとし、例えば、外
装材１としては0.27mmのカラー鉄板を第１図に示
す形状に成形した部材が連続的に供給され、原料
６としてはポリウレタン樹脂を用いる。この原料
６としては、ポリオール所謂Ａ液としては、AZ
システム、SA−229−S4（第一工業製薬社製）と
ポリイソシアネート所謂Ｂ液としては、ミリオネ
ートMR−100（日本ポリウレタン社製）を20℃
に加温し、これをワンシヨツト法によりＷ＝365
mm、Ｈ＝15mmの外装材１の背面の中心に第４図ａ
に示すように注入方式により吐出する。なおこの
原料６の反応発泡特性を第３図において実線で
示す。裏面材２としてはクラフト紙又は防水処理
を施したクラフト紙を用い、分散用ローラ７とし
て50mmφの金属製ローラをキユアオーブン９の回
転速度30ｍ／minに対応して送給するように回転
する。キユアオーブン９は雰囲気が約90〜110℃
に設定され、型材は約70〜80℃に加温されてい
る。また原料６は33000cm2に1300ｇ塗布し、原料
６の液比重を1.2（ｇ／cm2）、フリー密度は0.025
（ｇ／cm2）、この状態におけるクリームタイムは15
秒、ゲルタイムは30秒、ライズタイムは45秒とす
る。さらに外装材１の背面と裏面材２の分散用ロ
ーラ７の中心位置におけるギヤツプΔＧ＝0.4mm
とする。そこで第４図ａに示すように原料６をＷ
＝356mm、深さ13mmの凹所に注入的に吐出する。
この場合、Ｓ＝150mm、Δｔ＝３〜４mmである。
そのときの原料６は、第３図に示す特性線図にお
いてイに示す線上の状態にある。すなわち、ミキ
シングされたばかりのクリームタイムへ入る直前
の液状で粘度が約200CPS程度の流動容易で、か
つ無発泡の状態である。なお分散率は30〜40％で
ある。次に分散用ローラ７の位置に到達する直前
の状態としては、第４図ｂに示すように原料６の
反応と流動性によつてS1＝200mmに拡がり、約50
〜60％の分散率となる。そしてこのときの原料６
は第３図ロに示す線上の状態にある。次に分散用
ローラ７によつて第４図ｃに示すようにS2＝250
〜300mmに押圧によつて分散する。なお好ましく
は95〜98％で残りの５〜２％欠陥部分程度の面積
であることが望ましい。このときの原料６は、第
３図ハに示す線上にある。この位置を通過した外
装材１は原料６が反応、発泡が活発になり、クリ
ームタイムＡの末期となつている。そして修正用
ローラ８の直前では第４図ｄに示す状態になる。
このような状態の原料を修正用ローラ８によつて
不足分の分散を補うと共に所定容積の40〜70％に
充填、抑圧する。この位置での原料６は第３図ニ
の状態にある。すなわち、この位置では第３図に
示すように原料６はゲルタイム領域Ｂの中間程度
に位置し、大幅に反応が進み、発泡がフリー状態
となり、発泡高さが急激に増大する。そのためセ
ルは不均一の形状、大きさになる。そこでこの修
正用ローラ８によつてこれを均一に、所謂Ｙ軸方
向に長軸を有するセルを90゜回転したＸ軸上に長
軸をもつてくるように抑圧する。しかもこの状態
ではセルの膜厚が厚く、かつ弾性にとみ、その
上、発泡剤の気泡が40〜60％進んだ状態であるた
め今後、発泡が十分に行いうると共にセル形状を
球形に変化させられるものである。この位置を通
過すると原料６は次第に第３図から明らかなよう
に発泡がより急カーブにより、キユアオーブンの
入口の位置ではゲルタイムＢの末期にあり、かつ
分散率（一点鎖線、′二つの例で示す）と充
填率（二点鎖線で示す）とは前者が100％、後
者が80〜90％の状態にある。しかもゲルタイムＢ
の末期に位置し、発泡剤の気化が相当に進んだ状
態となる。このような状態下で上下型材１０，１
１内に到達し、上方も規制して所要体積を合成樹
脂発泡体３の不足分（第３図ホ線上のように）を
より補充すると共に型の押圧と発泡圧による内圧
との相乗効果によつてセルをゲルタイムＢの末期
とライズタイムＣの初期の間に球状化する。しか
も発泡組織を均質化すると共に柔軟なセル膜を次
第に、所謂養生（期間Ｄ）しながら硬化せしめ
る。このようにして製造した複合板をその出口か
ら製品として連続的に送出する。この製品を観察
したところ、39倍の発泡倍率の均質発泡組織が合
成樹脂発泡体３において形成され、しかもそのセ
ルの形状もほぼ球状となつていた。 Next, an embodiment of the method for manufacturing a heat insulating composite board according to the present invention will be described in detail. Assuming that a composite board with a cross section as shown in Fig. 1 is to be manufactured, for example, as the exterior material 1, a 0.27 mm colored iron plate formed into the shape shown in Fig. 1 is continuously supplied, and as the raw material 6. uses polyurethane resin. As this raw material 6, polyol so-called liquid A is AZ
The system, SA-229-S4 (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) and the polyisocyanate so-called B liquid, Millionate MR-100 (manufactured by Nippon Polyurethane Co., Ltd.) were heated at 20°C.
and heated it to W=365 using the one shot method.
mm, H = 15 mm at the center of the back of the exterior material 1 as shown in
It is discharged using the injection method as shown in . The reaction foaming characteristics of this raw material 6 are shown by the solid line in FIG. As the backing material 2, kraft paper or kraft paper treated with waterproofing is used, and as the dispersion roller 7, a metal roller of 50 mmφ is rotated so as to feed the curing oven 9 at a rotational speed of 30 m/min. The atmosphere of Cure Oven 9 is approximately 90 to 110℃.
The mold material is heated to approximately 70-80℃. In addition, 1300g of raw material 6 was applied to 33000cm 2 , the liquid specific gravity of raw material 6 was 1.2 (g/cm 2 ), and the free density was 0.025.
(g/cm 2 ), cream time in this state is 15
seconds, gel time is 30 seconds, and rise time is 45 seconds. Furthermore, the gap ΔG between the rear surface of the exterior material 1 and the center position of the dispersion roller 7 of the back surface material 2 is 0.4 mm.
shall be. Therefore, as shown in Figure 4a, the raw material 6 was
= 356mm, discharged into a recess of 13mm deep.
In this case, S=150 mm and Δt=3 to 4 mm.
At that time, the raw material 6 is in a state on the line A in the characteristic diagram shown in FIG. That is, it is in a liquid state immediately before being mixed into the cream thyme, with a viscosity of about 200 CPS, easy to flow, and non-foaming. Note that the dispersion rate is 30 to 40%. Next, as shown in FIG. 4b, the state immediately before reaching the position of the dispersion roller 7 is that due to the reaction and fluidity of the raw material 6, it has spread to S 1 = 200 mm, and about 50 mm.
~60% dispersion rate. And at this time raw material 6
is on the line shown in FIG. 3B. Then, as shown in FIG. 4c, S 2 =250
Dispersed by pressing to ~300mm. The area is preferably about 95 to 98% and the remaining 5 to 2% defective. The raw material 6 at this time is on the line shown in FIG. 3C. In the packaging material 1 that has passed this position, the raw material 6 has reacted and foaming has become active, and the cream time A has reached its final stage. Immediately before the correction roller 8, the state is shown in FIG. 4d.
The raw material in such a state is used to compensate for the insufficient dispersion by the correction roller 8, and is filled and suppressed to 40 to 70% of the predetermined volume. The raw material 6 at this position is in the state shown in FIG. 3D. That is, at this position, as shown in FIG. 3, the raw material 6 is located approximately in the middle of the gel time region B, the reaction progresses significantly, foaming becomes free, and the foaming height increases rapidly. Therefore, the cells have non-uniform shapes and sizes. Therefore, this correction roller 8 uniformly suppresses the cell so that the cell having a long axis in the Y-axis direction is rotated by 90 degrees so that the long axis is on the X-axis. Moreover, in this state, the cell film is thick and elastic, and the foaming agent has 40 to 60% of the bubbles, so it is possible to carry out sufficient foaming in the future and change the cell shape to a spherical shape. It is something that can be done. As it passes through this position, the foaming of the raw material 6 gradually becomes more sharp as shown in FIG. ) and the filling rate (indicated by the two-dot chain line) are 100% for the former and 80 to 90% for the latter. Moreover, gel time B
It is in the final stage of the process, and the foaming agent is in a state where the vaporization has progressed considerably. Under such conditions, the upper and lower mold members 10,1
1, the upper part is also regulated to replenish the required volume of the synthetic resin foam 3 (as shown on the line 3 in FIG. The cells are thus spheroidized between the end of gel time B and the beginning of rise time C. Moreover, the foamed structure is homogenized and the flexible cell membrane is gradually hardened during so-called curing (period D). The composite plate produced in this manner is continuously delivered as a product from its outlet. When this product was observed, a homogeneous foam structure with an expansion ratio of 39 times was formed in the synthetic resin foam 3, and the shape of the cells was also approximately spherical.
上述したように本発明に係る断熱複合板の製造
方法によれば、反応、発泡が急激な合成樹脂発泡
体原料の分散を三段階的に行い、発泡の抑制によ
る発泡組織の矯正を二段階的に行つて前記した○イ
〜○ホの欠点を除去すると共に断熱性と機械強度に
富み、しかも樹脂を有効に使用できる特徴があ
る。 As described above, according to the method for producing a heat insulating composite board according to the present invention, the synthetic resin foam raw material that undergoes rapid reaction and foaming is dispersed in three stages, and the foam structure is corrected in two stages by suppressing foaming. In addition to eliminating the drawbacks of ○I to ○E mentioned above, it has the characteristics of being rich in heat insulation and mechanical strength, and moreover, allowing effective use of resin.
第１図は従来から製造されている断熱複合板の
一例を示す斜視図、第２図は本発明に係る断熱複
合板の製造方法の実施に供する装置の要部を示す
説明図、第３図は合成樹脂発泡体原料の挙動を説
明する特性図、第４図ａ〜ｅは本発明に係る断熱
複合板の製造方法の一実施例を説明するための部
分説明図である。
１……外装材、２……裏面材、ａ……吐出機、
６……原料、７……分散用ローラ、８……修正用
ローラ、９……キユアオーブン。
FIG. 1 is a perspective view showing an example of a conventionally manufactured heat insulating composite board, FIG. 2 is an explanatory diagram showing the main parts of an apparatus used for carrying out the method for manufacturing a heat insulating composite board according to the present invention, and FIG. 4A to 4E are characteristic diagrams for explaining the behavior of the synthetic resin foam raw material, and FIGS. 4A to 4E are partial explanatory diagrams for explaining an embodiment of the method for manufacturing a heat insulating composite board according to the present invention. 1... Exterior material, 2... Back material, a... Discharge machine,
6...Raw material, 7...Dispersion roller, 8...Correction roller, 9...Cure oven.
Claims (1)
性合成樹脂発泡体を設けた複合板を型内で連続的
に製造するに際し、外装材背面に吐出された上記
発泡体形成用の原料（液状）をクリームタイムの
間に裏面材を介したローラの押圧によつて背面の
発泡体形成面積の80％程度に分散せしめ、次に反
応、発泡途中のゲルタイム中に残りの10％程度
（他の10％は分散用ローラを通過後に反応、発泡
と流動性により分散）を修正用ローラ位置で分散
すると共に合成樹脂発泡体形成の全容積の40〜60
％を充填し、かつ気泡構造を強制的に変形、抑圧
し、次に型に到達するまでの間に約20％の容積を
充填せしめ、型入口部分で残り容積の40〜20％を
ゲルタイム末期までの間に充填せしめて、全容積
を球状化した気泡構造からなる合成樹脂発泡体で
充填すると共に型内でライズタイムが完了し、養
生期間に少なくとも一部突入するようにしたこと
を特徴とする断熱複合板の製造方法。1. When continuously manufacturing a composite board in which a thermosetting synthetic resin foam is provided between the back surface of the exterior material and the sheet-like back material in a mold, the raw material for forming the foam discharged onto the back surface of the exterior material (liquid) is dispersed in about 80% of the foam forming area on the back side by pressing a roller through the backing material during the cream time, and then during the gel time during reaction and foaming, the remaining 10% ( The other 10% (reacted after passing through the dispersion roller, dispersed by foaming and fluidity) is dispersed at the correction roller position, and 40 to 60% of the total volume of the synthetic resin foam is formed.
% and forcibly deforms and suppresses the bubble structure, then fills approximately 20% of the volume until reaching the mold, and 40 to 20% of the remaining volume at the entrance of the mold at the end of the gel time. The entire volume is filled with the synthetic resin foam having a spherical cell structure, and the rise time is completed in the mold, and at least part of the curing period begins. A method of manufacturing a heat insulating composite board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13835879A JPS5662138A (en) | 1979-10-24 | 1979-10-24 | Manufacture of adiabatic composite plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13835879A JPS5662138A (en) | 1979-10-24 | 1979-10-24 | Manufacture of adiabatic composite plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5662138A JPS5662138A (en) | 1981-05-27 |
| JPS6234527B2 true JPS6234527B2 (en) | 1987-07-28 |
Family
ID=15220055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13835879A Granted JPS5662138A (en) | 1979-10-24 | 1979-10-24 | Manufacture of adiabatic composite plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5662138A (en) |
-
1979
- 1979-10-24 JP JP13835879A patent/JPS5662138A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5662138A (en) | 1981-05-27 |
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