JPH0349724B2 - - Google Patents

Info

Publication number
JPH0349724B2
JPH0349724B2 JP26940386A JP26940386A JPH0349724B2 JP H0349724 B2 JPH0349724 B2 JP H0349724B2 JP 26940386 A JP26940386 A JP 26940386A JP 26940386 A JP26940386 A JP 26940386A JP H0349724 B2 JPH0349724 B2 JP H0349724B2
Authority
JP
Japan
Prior art keywords
filter cloth
excipient
shaped body
vacuum
belt
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
Application number
JP26940386A
Other languages
Japanese (ja)
Other versions
JPS63122503A (en
Inventor
Tsuyoshi Nishio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurimoto Ltd
Original Assignee
Kurimoto Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kurimoto Ltd filed Critical Kurimoto Ltd
Priority to JP26940386A priority Critical patent/JPS63122503A/en
Publication of JPS63122503A publication Critical patent/JPS63122503A/en
Publication of JPH0349724B2 publication Critical patent/JPH0349724B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Producing Shaped Articles From Materials (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は上部脱水方式により繊維強化セメン
ト板を連続的に製造する方法に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for continuously manufacturing fiber reinforced cement boards using a top dewatering method.

〔従来の技術〕[Conventional technology]

繊維強化セメント板の製造過程において、セメ
ントモルタル中の余剰水を上部脱水方式で脱水す
る技術として特開昭53−20524号公報に記載され
たものがある。
In the manufacturing process of fiber-reinforced cement boards, there is a technique described in JP-A-53-20524 as a technique for dewatering excess water in cement mortar using an upper dehydration method.

この従来の技術は間欠的に移動する搬送装置上
に型枠を設け、この型枠上にセメント−水系賦形
体を形成し、この賦形体の停止中において、無端
ベルト状のフイルター用中間マツトを介し、真空
脱水装置を賦形体上に押圧せしめて真空吸引によ
り脱水し、脱水後脱水装置を上昇させてフイルタ
ー用中間マツトとともに賦形体から離し、ついで
搬送装置とともに賦形体およびフイルター用中間
マツトを一定長移動させて、再び前記同様の脱水
操作を繰返えすものである。
In this conventional technology, a formwork is provided on a conveying device that moves intermittently, a cement-water based excipient is formed on this formwork, and while the excipient is stopped, an endless belt-shaped intermediate mat for a filter is installed. Then, a vacuum dehydrator is pressed onto the excipient to dehydrate it by vacuum suction, and after dehydration, the dehydrator is raised and separated from the excipient together with the intermediate mat for the filter, and then the excipient and the intermediate mat for the filter are moved to a fixed position along with the conveying device. After a long movement, the same dehydration operation as described above is repeated again.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記の従来技術は、余剰水の脱水に際して賦形
体の搬送装置を停したうえで真空脱水装置を下降
させ、中間マツトを介して脱水装置を賦形体上に
押し付け、真空ポンプを運転して行なうものであ
るから間欠作業となり、搬送装置の移動中は脱水
作業が停止するので生産性の点で問題がある。
In the above-mentioned conventional technology, when excess water is dehydrated, the transport device for the excipients is stopped, the vacuum dehydrator is lowered, the dehydrator is pressed onto the excipients via an intermediate mat, and the vacuum pump is operated. This results in intermittent work, and the dewatering work stops while the conveyance device is moving, which poses a problem in terms of productivity.

また、賦形体の移送は前記のように真空脱水装
置を中間マツトとともに上昇させて、賦形体から
離した状態で行なうが、このとき真空ポンプを停
止して真空脱水装置、すなわち、真空箱内の真空
度を0とするため、真空箱や中間マツトに付着し
ている水滴が賦形体上に落下し、これが品質ムラ
の原因となる。
In addition, the excipients are transferred as described above with the vacuum dehydrator raised together with the intermediate mat and separated from the excipients. At this time, the vacuum pump is stopped and the vacuum dehydrator, that is, the Since the degree of vacuum is set to 0, water droplets adhering to the vacuum box and intermediate mat fall onto the excipient, which causes uneven quality.

この発明は上記のような上部脱水方式の改良に
係り、品質低下を生じることなく、生産性を向上
させることができる繊維強化セメント板の製造方
法を提供するものである。
The present invention relates to an improvement of the above-mentioned upper dewatering system, and provides a method for manufacturing fiber-reinforced cement boards that can improve productivity without deteriorating quality.

〔問題点を解決するための手段〕[Means for solving problems]

上記の問題点を解決するための技術手段は連続
的に移動する無端ベルトからなる搬送装置上に、
セメント−水系スラリーと繊維を投入して板状賦
形体を形成し、この賦形体の上面を、同賦形体の
横巾より若干巾狭な一対の押圧ロールおよび、こ
の両押圧ロール間に掛け渡した無端状濾布で押圧
するとともに、この濾布を前記賦形体の移動速度
と同期駆動せしめ、かつ、同濾布の賦形体接触側
内面に設けた真空吸引装置により濾布を介して賦
形体の余剰水を真空脱水することであり、使用す
る繊維としてはガラス繊維、合成繊維、カーボン
繊維などである。
The technical means to solve the above problems is to use a conveyor device consisting of a continuously moving endless belt.
A cement-water based slurry and fibers are charged to form a plate-shaped shaped body, and the upper surface of this shaped body is passed between a pair of press rolls whose width is slightly narrower than the width of the shaped body, and between the two press rolls. At the same time, this filter cloth is driven in synchronization with the moving speed of the excipient, and a vacuum suction device provided on the inner surface of the filter cloth on the excipient contact side is used to press the extruder through the filter cloth. The process involves vacuum dehydration of excess water, and the fibers used include glass fibers, synthetic fibers, and carbon fibers.

〔実施例〕〔Example〕

図面はこの発明方法の実施例を示すもので、A
は搬送装置である。この搬送装置は前後一対のプ
ーリ1,2に無端ベルト3を掛け渡し、適宜の駆
動手段で矢印方向に一定の速度で駆動する。この
ベルト3の搬送側の下面は案内板4で支持してベ
ルト3を水平に保持する。
The drawings show an embodiment of the method of this invention, and A
is a transport device. This conveyance device has an endless belt 3 wrapped around a pair of front and rear pulleys 1 and 2, and is driven at a constant speed in the direction of the arrow by an appropriate drive means. The lower surface of the conveyance side of the belt 3 is supported by a guide plate 4 to hold the belt 3 horizontally.

上記の搬送ベルト3の上に適宜の装置により提
形のパレツト5を供給するが、このさい、先方側
のパレツト5と後方側のパレツト5の間に隙間が
生じないようにする。Bはセメントモルタルの投
入装置で、セメントと砂および水と、必要に応じ
減水剤の適量をミキサ6で混練し、この混練した
セメントモルタルはモルタルポンプ7に投入し、
ポンプ7の吐出口に連結した複数の配管8に圧送
され、その先端のノズル9からベルト3上のパレ
ツト5上に吐出する。
A rectangular shaped pallet 5 is fed onto the above-mentioned conveyor belt 3 by an appropriate device, but at this time, it is ensured that no gap is created between the pallet 5 on the front side and the pallet 5 on the rear side. B is a cement mortar charging device in which cement, sand, water, and an appropriate amount of water reducing agent are mixed in a mixer 6, and the mixed cement mortar is charged into a mortar pump 7.
The liquid is fed under pressure to a plurality of pipes 8 connected to the discharge port of the pump 7, and is discharged onto the pallet 5 on the belt 3 from a nozzle 9 at the tip thereof.

各配管8はフレキシブルとし、ノズル9は、ベ
ルト3の上方で、これに直交するレール10に沿
つて往復する台車11に取付け、この台車11を
適宜の駆動手段によりレール10に沿つて往復さ
せることによりベルト3上に並んだパレツト5上
に均一なモルタル層を形成する。
Each pipe 8 is flexible, and the nozzle 9 is attached above the belt 3 to a truck 11 that reciprocates along a rail 10 perpendicular to the belt 3, and this truck 11 is moved back and forth along the rail 10 by an appropriate driving means. A uniform mortar layer is formed on the pallets 5 arranged on the belt 3.

Cは各投入装置Bの前方に配置した繊維供給装
置でベルト3の上方で、これに直交するレール1
2に沿つて往復する台車13に取付けてある。す
なわち、図示省略してある供給源から供給された
ガラスロービング16を台車13に取付けたカツ
タ14により切断して短繊維とし、これを散布口
15から台車13の往復動とともに均一に散布す
る。
C is a fiber feeding device placed in front of each feeding device B, and is located above the belt 3 and has a rail 1 perpendicular thereto.
It is attached to a trolley 13 that reciprocates along 2. That is, a glass roving 16 supplied from a supply source (not shown) is cut into short fibers by a cutter 14 attached to a truck 13, and the short fibers are uniformly scattered from a dispersing port 15 as the truck 13 reciprocates.

また、後部の繊維供給装置Cの前方に長繊維供
給装置Dを設ける。この装置Dはガラスなどの長
繊維を例えば約10mmピツチの網状にしたもので、
この網状物18を一対の引出しロール20間に挿
入し、この引出しロール20を矢印方向に駆動し
て、ベルト3上のセメントモルタル層および短繊
維層上に載せ、ロール21により押し付ける。た
だし、この装置Dは省略する場合もある。
Furthermore, a long fiber supply device D is provided in front of the fiber supply device C at the rear. This device D is made of long fibers such as glass in the form of a mesh with a pitch of about 10 mm, for example.
This net-like material 18 is inserted between a pair of drawing rolls 20, and this drawing roll 20 is driven in the direction of the arrow to place it on the cement mortar layer and short fiber layer on the belt 3, and press it with the rolls 21. However, this device D may be omitted in some cases.

こうしてベルト3上隙間なく並んだパレツト5
上に積層されて形成されたセメントモルタルと繊
維の板状賦形体22はその前方の振動体25の下
部に向かう。この振動体25は傾斜した板状で、
その下縁は水平となつて賦形体22上に接触さ
せ、振動体25に設けた高週波振動機26により
振動体25を介して賦形体22を振動させ、セメ
ントモルタルを繊維に浸透させるとともに締め固
める。
In this way, the pallets 5 are lined up without any gaps on the belt 3.
The plate-shaped shaped body 22 made of cement mortar and fibers laminated on top is directed toward the lower part of the vibrating body 25 in front of it. This vibrating body 25 has an inclined plate shape,
The lower edge thereof is made horizontal and in contact with the shaped body 22, and the shaped body 22 is vibrated via the vibrating body 25 by a high frequency vibrator 26 provided on the vibrating body 25, and the cement mortar is penetrated into the fibers and tightened. Harden.

振動体25の前方には前後一対の押圧ロール2
8,29と、この両ロールに掛け渡した無端状濾
布30と真空吸引装置31とを設ける。
In front of the vibrating body 25, a pair of front and rear pressure rolls 2 are provided.
8, 29, an endless filter cloth 30 stretched over both rolls, and a vacuum suction device 31.

押圧ロール28の上方には濾布30の上部ロー
ル32を設け、この上部ロール32をモータ33
により伝動ベルト27を介して駆動し、上下のロ
ール32,28を伝動ベルト34により連動させ
て、濾布30をベルト3と同速で矢印方向に走行
させる。
An upper roll 32 of a filter cloth 30 is provided above the pressure roll 28, and this upper roll 32 is driven by a motor 33.
The upper and lower rolls 32 and 28 are interlocked by the transmission belt 34, and the filter cloth 30 is run in the direction of the arrow at the same speed as the belt 3.

35は押圧ロール28の前方に設けた厚み調整
ロールで、伝動ベルト36によつて押圧ロール2
8と同期回転し、賦形体22の厚みを一定にす
る。ただしこの調整ロール35を省略する場合も
ある。
35 is a thickness adjustment roll provided in front of the pressure roll 28, and the pressure roll 2 is controlled by a transmission belt 36.
8 to keep the thickness of the shaped body 22 constant. However, this adjustment roll 35 may be omitted in some cases.

真空吸引装置31は第2図,第3図のように中
空箱状で、底板に多数の吸引孔を設け、上部には
真空ポンプユニツト38に通じるパイプ39が連
結してある。
As shown in FIGS. 2 and 3, the vacuum suction device 31 is shaped like a hollow box, has a large number of suction holes in its bottom plate, and has a pipe 39 connected to a vacuum pump unit 38 at its top.

前記押圧ロール28,29および濾布30、真
空吸引装置31の横巾は同一である。この横巾を
L1とすると、このL1は第3図のように賦形体2
2の横巾L2より若干小さく設定する。
The widths of the pressure rolls 28, 29, the filter cloth 30, and the vacuum suction device 31 are the same. This swag
Assuming L 1 , this L 1 corresponds to the excipient 2 as shown in Figure 3.
Set it slightly smaller than the width L 2 of 2.

第2図,第3図において、パレツト5の上面と
押圧ロール28の下側との間隔は搬送される賦形
体22の厚みt1よりわずかに小さく設定される。
In FIGS. 2 and 3, the distance between the upper surface of the pallet 5 and the lower side of the press roll 28 is set to be slightly smaller than the thickness t 1 of the shaped body 22 being conveyed.

一方押圧ロール29の下側とパレツト5の上面
間の間隔T2も賦形体22の厚みよりも小さく設
定し、その値は脱水に伴なう賦形体22の肉原減
少量を考慮して定められる。従つて両押圧ロール
28,29の取付位置はT1>T2となるように設
定する。
On the other hand, the distance T 2 between the lower side of the press roll 29 and the upper surface of the pallet 5 is also set smaller than the thickness of the shaped body 22, and its value is determined by taking into consideration the amount of decrease in the raw material of the shaped body 22 due to dehydration. It will be done. Therefore, the mounting positions of both pressure rolls 28 and 29 are set so that T 1 >T 2 .

上記のように設定することにより両押圧ロール
28,29の下側を通過する濾布30は搬送方向
に向つて僅かに下り勾配に傾斜しており、この濾
布30に接触する真空吸引装置31の底板も同様
に傾斜している。
By setting as described above, the filter cloth 30 passing under both the pressure rolls 28 and 29 is inclined slightly downward in the conveying direction, and the vacuum suction device 31 in contact with the filter cloth 30 The bottom plate is also sloped.

従つて賦形体22は押圧ロール28,29、濾
布30により押圧状態で搬送される。
Therefore, the shaped body 22 is conveyed under pressure by the pressure rolls 28, 29 and the filter cloth 30.

上記のようにL1<L2とし、押圧ロール28,
29、濾布30により賦形体22を押圧すること
によつて、第3図のように賦形体22の両側部に
盛り上り部40が生じこの部分からの真空吸引装
置31への空気のリーク(流入)が防止でき、装
置31内の所定の真空度が保たれる。
As mentioned above, L 1 < L 2 and the pressure roll 28,
29. By pressing the shaped body 22 with the filter cloth 30, raised portions 40 are generated on both sides of the shaped body 22 as shown in FIG. 3, and air leaks from this portion to the vacuum suction device 31 ( (inflow) can be prevented, and a predetermined degree of vacuum within the device 31 can be maintained.

第2図の45は洗浄ブラシロールで、このブラ
シロール45は前記伝動ベルト27により駆動さ
れる。またこのブラシロール45の前後に洗浄水
噴射ノズル46を設けて賦形体22に接触してモ
ルタルなどが付着した濾布30に洗浄水を噴射し
つつブラシロール45により洗浄し、洗浄により
汚れた汚水はブラシロール45の部分の濾布30
の下部に設けた洗浄汚水受箱47により受けてそ
の底部の排水管から所定場所へ排水する。
Reference numeral 45 in FIG. 2 denotes a cleaning brush roll, and this brush roll 45 is driven by the transmission belt 27. In addition, cleaning water spray nozzles 46 are provided before and after this brush roll 45, and the brush roll 45 sprays cleaning water onto the filter cloth 30 that comes into contact with the excipient 22 and has mortar etc. attached thereto, and the sewage water contaminated by the cleaning is washed. is the filter cloth 30 in the brush roll 45 part.
The washed wastewater is received by a washing sewage receiving box 47 provided at the lower part of the sewage tank, and is drained to a predetermined location from a drain pipe at the bottom.

上記の工程により所定の脱水を終えた賦形体2
2はパレツト5とともに搬送装置Aから第1図の
ローラテーブル48上に移送されるが、その途中
で、前後のパレツト5の接触部上において、カツ
タ49によりパレツト5の長さと一致するように
切断される。従つてカツタ49は図示省略してあ
る移動手段により賦形体22とともに走行して賦
形体22をその走行方向と直角の方向に切断し、
その後元の位置に戻る作用を繰返えす。
Shaped body 2 that has been dehydrated through the above steps
2 is transferred together with the pallet 5 from the conveying device A onto the roller table 48 shown in FIG. be done. Therefore, the cutter 49 travels together with the shaped body 22 by a moving means (not shown) and cuts the shaped body 22 in a direction perpendicular to the direction of travel thereof.
Then repeat the process of returning to the original position.

こうしてパレツト5と同じ長さに切断された賦
形体22はパレツト5とともにローラテーブル4
8上から取出して適宜の処理工程を終えたのち、
養生室で養生硬化させ、そののちパレツト5を外
して完成品となる。
The shaped body 22 cut into the same length as the pallet 5 is placed on the roller table 4 together with the pallet 5.
8 After taking it out from above and completing the appropriate processing steps,
After curing and hardening in a curing room, the pallet 5 is removed to form a finished product.

なお、実施例のようなパレツト5を用いずに、
ベルト3上に直接、セメントモルタルや繊維を投
入して賦形体を製作することもできる。
In addition, without using the palette 5 as in the example,
It is also possible to produce a shaped body by directly introducing cement mortar or fibers onto the belt 3.

〔効果〕〔effect〕

この発明の方法は前記のように、連続的に移動
する搬送装置上に形成した賦形体の上面を、この
賦形体の横巾より若干巾狭な一対のロールおよび
この押圧ロールに掛け渡した濾布で押圧するとと
もに、この濾布を前記賦形体の搬送速度と同期駆
動せしめたので従来方法のように賦形体の搬送を
停止して脱水することなく、賦形体を搬送しなが
ら、連続真空脱水することができ、このことによ
り連続的に製造できるので生産性を著しく高める
ことができる。また、真空脱水装置は昇降するこ
となく、一定の位置で常に真空を維持しながら、
脱水できるので、脱水された賦形体上に水滴の滴
下による強度低下のおそれが全くなく従つて製品
の品質がムラなく一定する。さらに、押圧ロール
およびこの押圧ロールに掛け渡した濾布は定位置
で回転するとともに、賦形体を押圧するので、賦
形体の厚みが規制され、一定の厚みとなり、前記
のように賦形体の横巾より押圧ロールおよび濾布
の巾が狭いため、賦形体の両側に盛り上り部が生
じて真空吸引装置への空気のリークが防止され、
真空吸引装置の真空度が一定に保たれるので十分
な脱水が行なわれるなどの効果がある。
As described above, the method of the present invention involves filtering the upper surface of a shaped body formed on a continuously moving conveyance device through a pair of rolls whose width is slightly narrower than the width of the shaped body and this press roll. In addition to pressing with a cloth, this filter cloth was driven in synchronization with the conveyance speed of the excipient, so continuous vacuum dehydration was performed while conveying the excipient, without having to stop the conveyance of the excipient for dehydration as in the conventional method. This allows continuous production, which significantly increases productivity. In addition, the vacuum dehydrator does not move up or down, but always maintains a vacuum at a fixed position.
Since it can be dehydrated, there is no risk of deterioration in strength due to water droplets falling on the dehydrated excipient, and the quality of the product is therefore uniform. Furthermore, since the press roll and the filter cloth stretched over the press roll rotate in a fixed position and press the excipient, the thickness of the excipient is regulated and becomes constant, and as described above, the thickness of the excipient is regulated and Since the width of the press roll and the filter cloth are narrower than the width of the press roll and the filter cloth, raised portions are formed on both sides of the excipient, which prevents air from leaking to the vacuum suction device.
Since the degree of vacuum of the vacuum suction device is maintained constant, there are effects such as sufficient dehydration.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明方法を実施する装置の一例を
示す側面図、第2図は同上要部の拡大縦断面図側
面図、第3図は第2図−線の拡大横断正面図
である。 1,2…プーリ、3…無端ベルト、5…パレツ
ト、22…板状賦形体、28,29…押圧ロー
ル、30…無端状濾布、31…真空吸引装置、A
…搬送装置、B…セメントモルタルの投入装置、
C…繊維供給装置、D…長繊維供給装置。
FIG. 1 is a side view showing an example of an apparatus for carrying out the method of the present invention, FIG. 2 is an enlarged vertical cross-sectional side view of the main parts of the same, and FIG. 3 is an enlarged cross-sectional front view taken along the line shown in FIG. 2. DESCRIPTION OF SYMBOLS 1, 2... Pulley, 3... Endless belt, 5... Pallet, 22... Plate shaped body, 28, 29... Press roll, 30... Endless filter cloth, 31... Vacuum suction device, A
... Conveyance device, B... Cement mortar charging device,
C... Fiber supply device, D... Long fiber supply device.

Claims (1)

【特許請求の範囲】[Claims] 1 連続的に移動する無端ベルトからなる搬送装
置上に、セメント−水系スラリーと繊維を投入し
て板状賦形体を形成し、この賦形体の上面を、同
賦形体の横巾より若干巾狭な一対の押圧ロールお
よび、この両押圧ロール間に掛け渡した無端状濾
布で押圧するとともに、この濾布を前記賦形体の
移動速度と同期駆動せしめ、かつ、同濾布の賦形
体接触側内面に設けた真空吸引装置により濾布を
介して賦形体の余剰水を真空脱水することを特徴
とする繊維強化セメント板の連続製造方法。
1. A cement-water slurry and fibers are placed on a conveying device consisting of a continuously moving endless belt to form a plate-shaped shaped body, and the upper surface of this shaped body is slightly narrower than the width of the shaped body. A pair of pressure rolls and an endless filter cloth stretched between the pressure rolls are used to press the filter cloth, and the filter cloth is driven in synchronization with the moving speed of the excipient, and the side of the filter cloth that contacts the excipient is pressed. A continuous manufacturing method for a fiber-reinforced cement board, characterized in that excess water in the excipient is vacuum-dehydrated through a filter cloth using a vacuum suction device provided on the inner surface.
JP26940386A 1986-11-12 1986-11-12 Continuous manufacture of fiber reinforced cement board Granted JPS63122503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26940386A JPS63122503A (en) 1986-11-12 1986-11-12 Continuous manufacture of fiber reinforced cement board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26940386A JPS63122503A (en) 1986-11-12 1986-11-12 Continuous manufacture of fiber reinforced cement board

Publications (2)

Publication Number Publication Date
JPS63122503A JPS63122503A (en) 1988-05-26
JPH0349724B2 true JPH0349724B2 (en) 1991-07-30

Family

ID=17471926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26940386A Granted JPS63122503A (en) 1986-11-12 1986-11-12 Continuous manufacture of fiber reinforced cement board

Country Status (1)

Country Link
JP (1) JPS63122503A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002283321A (en) * 2001-03-27 2002-10-03 Kenzai Gijutsu Kenkyusho:Kk Equipment for molding slurry

Also Published As

Publication number Publication date
JPS63122503A (en) 1988-05-26

Similar Documents

Publication Publication Date Title
JPH05162110A (en) Manufacture of concrete panel by continuous rolling and device therefor
US4562030A (en) Process for manufacture of glass fiber-reinforced cement non-plate article
US4194946A (en) Process for continuously preparing fiber reinforced cement
US3957407A (en) Apparatus for manufacturing plaster sheets
WO1985004686A1 (en) A method and machine for levelling concrete when casting large concrete areas
JPH0349724B2 (en)
US5080750A (en) System for making composite blocks
CN117226986B (en) A roller conveyor type splitting machine
US3914079A (en) Apparatus for producing boards of filamentary material
JPH01264984A (en) Machine for finishing rear surface of tile
EP0152016B1 (en) Method and apparatus for the continuous production of reinforced manufactured cement products
JP2828732B2 (en) Method and apparatus for removing residual stress from extruded sheet
JPH09314529A (en) Building material molding method and molding apparatus
GB1378695A (en) Manufacture of glass fibre reinforced plaster board
CN101886403A (en) Bentonite waterproof board and method and special device for manufacturing same
JP2974921B2 (en) Raw plate manufacturing equipment
JP3820455B2 (en) Molded mat width adjusting device and width adjusting method
JPH06335908A (en) Method for manufacturing plate-shaped building element
JP2778923B2 (en) Raw plate manufacturing equipment
JPS6050143B2 (en) Glass fiber reinforced cement trough and its manufacturing method
JPS6050144B2 (en) Glass fiber reinforced cement board with plate and its manufacturing method
JP2929121B2 (en) Continuous forming equipment for calcium silicate plate
JPH0381119A (en) Manufacture and its device for lightweight boardlike body
JPH06246717A (en) Manufacturing apparatus for green panel of building board
JP3606971B2 (en) Manufacturing method of non-combustible plate