JPH0327772Y2 - - Google Patents

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Publication number
JPH0327772Y2
JPH0327772Y2 JP1985196601U JP19660185U JPH0327772Y2 JP H0327772 Y2 JPH0327772 Y2 JP H0327772Y2 JP 1985196601 U JP1985196601 U JP 1985196601U JP 19660185 U JP19660185 U JP 19660185U JP H0327772 Y2 JPH0327772 Y2 JP H0327772Y2
Authority
JP
Japan
Prior art keywords
pallet
removal allowance
removal
cutting
board
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
JP1985196601U
Other languages
Japanese (ja)
Other versions
JPS62104911U (en
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 filed Critical
Priority to JP1985196601U priority Critical patent/JPH0327772Y2/ja
Publication of JPS62104911U publication Critical patent/JPS62104911U/ja
Application granted granted Critical
Publication of JPH0327772Y2 publication Critical patent/JPH0327772Y2/ja
Expired legal-status Critical Current

Links

Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は、例えば、瓦板やセメント質板等で、
特に繊維質材を混入した押出成形無機質板の除去
代排除装置に関する。
[Detailed description of the invention] (Industrial application field) This invention can be used, for example, in tiles, cement boards, etc.
In particular, the present invention relates to an apparatus for eliminating removal allowance for extrusion-molded inorganic plates mixed with fibrous materials.

(従来の技術) 一般に、上記したセメント等の水硬性物質等か
らなる無機質板の押出成形においては、例えば特
公昭59−23967号公報に示されているように、無
機質板が押出成形機から連続的な帯状の生板とし
て取り出され、この生板は移送コンベアおよび次
の移載コンベア上のパレツト上に載置されて次工
程へ送り出されるまでの間に、所望の切断装置に
より順次所定長さに切断され、所定長さに切断さ
れた各生板が前記パレツトにより次工程へ搬送さ
れるようになつている。
(Prior art) In general, in the extrusion molding of inorganic plates made of hydraulic substances such as cement, etc., as described in Japanese Patent Publication No. 59-23967, the inorganic plates are continuously molded from an extrusion molding machine. The green plate is taken out as a strip-shaped green plate, and this green plate is placed on a pallet on a transfer conveyor and the next transfer conveyor, and is sequentially cut into a predetermined length by a desired cutting device before being sent to the next process. Each green plate cut into a predetermined length is conveyed to the next process by the pallet.

生板の切断装置としては、1枚の切断刃が前記
パレツトの端面に沿つて降下することにより、生
板をパレツトの境界上で切断するようにしたもの
が一般的である。この場合、完全に切断するため
には切断刃をパレツト表面より下に下がるまで下
げて切断する必要があるので、生板にバリが発生
するという問題がある。このようなバリは、生板
の硬化後に除去する方法があるが、その場合バリ
によりパレツトからの脱板が困難となり、また生
板の積み重ね時にバリにより変形するといつた問
題がある。
A typical green plate cutting device is one in which a single cutting blade descends along the end face of the pallet to cut the green plate on the boundary of the pallet. In this case, in order to make a complete cut, it is necessary to lower the cutting blade below the surface of the pallet and cut, which causes the problem that burrs are generated on the green plate. There is a method for removing such burrs after the green boards have hardened, but in this case, the burrs make it difficult to remove the boards from the pallet, and the burrs cause deformation when stacking the green boards.

これに関して、前記した特公昭59−23967号公
報記載のものにおいては、1枚の切断刃が生板の
切断の際、移送コンベアの表面で停止する構成と
なつているので、生板の切断およびバリの発生の
防止が不充分になるおそれがある。
Regarding this, in the above-mentioned Japanese Patent Publication No. 59-23967, since one cutting blade is configured to stop on the surface of the transfer conveyor when cutting the green board, it is possible to cut the green board and There is a risk that prevention of burr generation may be insufficient.

また、バリを除去する方法が特開昭57−102304
号公報に示されている。この方法は、所定間隔を
以て対向する一対の切断刃が生板をパレツトの境
界の両側で切断するように、前記パレツトの境界
を挟む状態で位置し、生板をパレツトの境界の両
側で切断した後、各切断刃の間に位置する生板の
部分を除去代として、切断刃自体が挟んで取り除
く構成となつている。この結果バリは除去代と一
緒に取り除かれる。しかしこの方法によると、生
板が完全に切断されにくく、例えばパルプ、石綿
等の繊維質材が入つている配合組成の場合、繊維
が切断されずに残り、これが切断刃の動きにつれ
て抜けようとするため、切断時に生板の端部が引
つ張られて生板が歪む(細る)という問題があ
る。
In addition, a method for removing burrs was disclosed in Japanese Patent Application Laid-Open No. 57-102304.
It is shown in the publication No. In this method, a pair of cutting blades facing each other with a predetermined interval are positioned to sandwich the pallet boundary so as to cut the green plate on both sides of the pallet boundary. After that, the cutting blades themselves pinch and remove the raw board by using the portion of the raw board located between the cutting blades as a removal allowance. As a result, the burr is removed together with the removal allowance. However, according to this method, it is difficult to completely cut the raw board. For example, if the composition contains fibrous materials such as pulp or asbestos, the fibers remain uncut and tend to come out as the cutting blade moves. Therefore, there is a problem in that the edges of the raw board are stretched during cutting, causing the raw board to become distorted (thin).

(考案が解決しようとする問題点) 本考案は、このような従来の問題を解決するた
めになされたもので、その目的は、生板の両端に
除去代を設け、生板の切断時に発生したバリや返
りを、生板が変形しないように除去代と一緒に取
り除くことができる押出成形無機質板の除去代排
除装置を提供するにある。
(Problems to be solved by the invention) This invention was made in order to solve such conventional problems.The purpose of this invention is to provide a removal allowance at both ends of the green board, and to remove the removal margin that occurs when cutting the green board. To provide a removal allowance removing device for an extrusion-molded inorganic board, which can remove burrs and warps together with the removal allowance so that the raw board is not deformed.

(問題を解決するための手段) 本考案に係る押出成形無機質板の除去装置の特
徴は押出機2から押出成形された無機質板の生板
3を載置移送する引取コンベア5と、引き続きこ
の生板3を載置移送する移載コンベア7上のパレ
ツト8と、前記引取コンベア5または前記パレツ
ト8上で前記生板3を所定長さに順次切断する一
対のカツタ14とから成る無機質板製造装置にお
いて、前記所定長さに切断された生板3を載置し
たパレツト8を前記移載コンベア7より引き続き
載置移送する移送装置20と、この移送装置20
上のパレツト8上に配備された前記所定長さの生
板3両端部より除去代3aを切断する切断装置2
1とを備え、前記切断装置21は二対のカツタ2
4a,24b;24a,24bを有し、各対のカ
ツタ24a,24bは鋏状に開閉可能に構成され
るとともに、各対のカツタ24a,24bは閉じ
た状態で生板3の除去代3aを切断し、前記所定
長さの生板3の内側に位置する各カツタ24a,
24bが除去代3aと生板3本体とを切断して隔
絶している間に、外側に位置するカツタ24a,
24bがそれぞれ開いて除去代3aを外側へ排除
するようにしてなるところにある。
(Means for Solving the Problem) The extrusion-molded inorganic board removal device according to the present invention is characterized by a take-up conveyor 5 for placing and transferring the raw inorganic board 3 extruded from the extruder 2, and An inorganic board manufacturing apparatus consisting of a pallet 8 on a transfer conveyor 7 on which boards 3 are placed and transferred, and a pair of cutters 14 that sequentially cut the green boards 3 into predetermined lengths on the take-up conveyor 5 or the pallet 8. , a transfer device 20 for successively placing and transferring the pallet 8 on which the green plate 3 cut into the predetermined length is placed from the transfer conveyor 7; and this transfer device 20.
A cutting device 2 that cuts the removal allowance 3a from both ends of the green plate 3 of the predetermined length arranged on the upper pallet 8.
1, and the cutting device 21 has two pairs of cutters 2.
4a, 24b; 24a, 24b, each pair of cutters 24a, 24b is configured to be openable and closable in the shape of scissors, and each pair of cutters 24a, 24b cuts the removal amount 3a of the raw board 3 in the closed state. Each cutter 24a that is cut and located inside the raw board 3 of the predetermined length,
While the cutter 24b is cutting and isolating the removal allowance 3a and the main body of the raw board 3, the cutter 24a located on the outside,
24b are each opened to remove the removal allowance 3a to the outside.

(作用) 切断装置の内側の各カツタが除去代と生板の他
の部分とを隔絶している間に、外側の各カツタが
除去代を取り除くので、除去代排除の際に生板が
変形せず、またカツタにより発生したバリが除去
代と一緒に排除される。
(Function) While each cutter on the inside of the cutting device separates the removal allowance from other parts of the green board, each cutter on the outside removes the removal allowance, so the green board is deformed when removing the removal allowance. In addition, the burrs generated by the cutter are removed together with the removal allowance.

(実施例) 以下、本考案の実施例につき図面を参照しなが
ら説明する。
(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

混練機1からの材料(例えばセメント等の水硬
性物質にパルプ石綿等の繊維質、パーライト、木
片等の軽量骨材とメチルセルローズ等の押出助剤
を加えたもの)が矢印のように押出機2に入り、
押出機2から連続的に帯状に送り出された生板3
は、速度検出コンベア4上を通過して引取コンベ
ア5上へ移送される。次に、生板3は未硬化のま
まフリーローラ6上を通過して、移載コンベア7
上のパレツト8上へ移載される。パレツト8は前
記引取コンベア5の下方に配置されたパレツト供
給装置9からパレツト供給コンベア10に載せら
れ、フリーローラ11を通過した後、前記移載コ
ンベア7上へ搬送される。なお、パレツト供給装
置9は、生板3の進行方向に直交する方向から空
のパレツト8aが投入され、これを前記パレツト
供給コンベア10上へ既知の要領で載置する。
The material from the kneader 1 (for example, a mixture of hydraulic substances such as cement, fibers such as pulp asbestos, lightweight aggregates such as perlite and wood chips, and extrusion aids such as methyl cellulose) is transferred to the extruder as shown by the arrow. Enter 2,
A raw plate 3 continuously fed out in a strip form from an extruder 2
passes over the speed detection conveyor 4 and is transferred onto the take-up conveyor 5. Next, the raw board 3 passes over a free roller 6 while remaining uncured, and is transferred to a transfer conveyor 7.
It is transferred onto the upper pallet 8. The pallet 8 is placed on a pallet supply conveyor 10 from a pallet supply device 9 disposed below the take-up conveyor 5, and after passing through a free roller 11, is conveyed onto the transfer conveyor 7. Incidentally, the pallet supply device 9 receives an empty pallet 8a from a direction perpendicular to the direction of movement of the green plate 3, and places the empty pallet 8a on the pallet supply conveyor 10 in a known manner.

本実施例では、生板3はパレツト8に載せられ
ている間に一対のカツタ14により各パレツト8
の境界上で所定長さに切断された後、フリーロー
ラ12上を通過して早送りコンベア13上へ移送
される。
In this embodiment, while the raw board 3 is placed on the pallet 8, a pair of cutters 14 are used to separate each pallet 8.
After being cut to a predetermined length on the boundary, the sheet passes over free rollers 12 and is transferred onto a rapid conveyor 13.

カツタ14は、所望の駆動装置により上下動が
可能であつて、移載コンベア7が一旦停止した間
に、あるいは移送コンベア7と同速度で移動する
間に生板3を所定長さに切断する。後者の場合カ
ツタ14は切断後に、元の位置へ戻される。
The cutter 14 can be moved up and down by a desired drive device, and cuts the raw board 3 to a predetermined length while the transfer conveyor 7 is once stopped or while moving at the same speed as the transfer conveyor 7. . In the latter case, the cutter 14 is returned to its original position after cutting.

なお、カツタ14は生板3を引取コンベア5上
で所定長さに切断することも可能である。
Note that the cutter 14 can also cut the raw board 3 into a predetermined length on the take-up conveyor 5.

上記した押出成形装置において、本考案による
除去代排除装置Aは、早送りコンベア13上のパ
レツト8を横送りする移送装置20と、移送装置
20上のパレツト8上にある所定長さの生板の両
端に設定された除去代3aを切断する切断装置2
1とを備えている。
In the extrusion molding apparatus described above, the removal allowance elimination device A according to the present invention includes a transfer device 20 that transversely feeds the pallet 8 on the rapid-feeding conveyor 13, and a predetermined length of green plate on the pallet 8 on the transfer device 20. Cutting device 2 that cuts the removal allowance 3a set at both ends
1.

移送装置20はこの実施例では、早送りコンベ
ア13上のパレツト8を所定位置で停止させるス
トツパ22と、早送りコンベア13からパレツト
8を受け取る横送りコンベア23とを有してい
る。
In this embodiment, the transfer device 20 has a stopper 22 for stopping the pallet 8 on the rapid conveyor 13 at a predetermined position, and a transverse conveyor 23 for receiving the pallet 8 from the rapid conveyor 13.

また、切断装置21は本実施例では、第3図〜
第5図で示すように、上下動可能な二対のカツタ
24a,24bを有し、各対のカツタ24a,2
4bは鋏状に開閉可能であるとともに、各対カツ
タ24a,24bは閉じた状態で生板の除去代3
aを切断し(第4図)、各カツタ24a,24b
が生板3を切断した際、前記所定長さの生板の内
側に位置する各カツタ24aが除去代3aと生板
本体3とを切断して隔絶している間に、外側に位
置するカツタ24bがそれぞれ開いて(第5図)、
除去代3aを外側へ排除する構成となつている。
Further, in this embodiment, the cutting device 21 is shown in FIGS.
As shown in FIG. 5, it has two pairs of cutters 24a, 24b that can move up and down, and
4b can be opened and closed in the shape of scissors, and each pair of cutters 24a and 24b can be closed to remove the raw board 3.
Cut a (Fig. 4) and cut each cutter 24a, 24b.
When cutting the raw board 3, while each cutter 24a located inside the predetermined length of the raw board cuts and isolates the removal allowance 3a from the raw board main body 3, the cutters located outside cut the raw board 3. 24b are each opened (Fig. 5),
The structure is such that the removal allowance 3a is removed to the outside.

なお、切断装置21のカツタの上下動、および
外側のカツタ24bの開聞は、手動あるいは既知
の流体圧シリンダ装置Rやモータ等により行われ
る。
The vertical movement of the cutter of the cutting device 21 and the opening of the outer cutter 24b are performed manually or by a known fluid pressure cylinder device R, a motor, or the like.

切断装置21により除去代を取り除かれた生板
3はパレツトとともに積載場所25へ送られ、一
定数量まとめて、次の工程へ送り出される。
The raw boards 3 from which the removal allowance has been removed by the cutting device 21 are sent together with pallets to the loading area 25, where they are sent in a certain quantity to the next process.

上記実施例の構成から明らかなように、本考案
では内側の各カツタ24aが両側の除去代3aを
生板本体から隔絶している間に、他のカツタ24
bが除去代3aを外側方向へ排除するので生板本
体の端部が除去代3aにより引き摺られることが
なくなり、それゆえ生板本体の変形および返りが
防止されるとともに、バリが除去代3aと一緒に
完全に除去される。したがつて、特に繊維質を含
む無機質板に対して有効である。なお、維維質
(長繊維)としては、ガラス繊維、ポリプロピレ
ン、ビニロン、ナイロン、アクリル、レーヨン等
の合成繊維、炭素繊維、スチール繊維等がある。
As is clear from the configuration of the above embodiment, in the present invention, while each inner cutter 24a isolates the removal allowance 3a on both sides from the raw board main body, the other cutter 24
b removes the removal allowance 3a outward, so the edge of the green board body is not dragged by the removal allowance 3a, thus preventing deformation and warping of the green board body, and preventing burrs from forming with the removal allowance 3a. completely removed together. Therefore, it is particularly effective for inorganic boards containing fibers. The fibers (long fibers) include glass fibers, synthetic fibers such as polypropylene, vinylon, nylon, acrylic, and rayon, carbon fibers, steel fibers, and the like.

また、本実施例では、除去代排除装置Aは、除
去代3aを回収し混練機1の前後に戻して再使用
させる除去代回収装置17(第2図)中へ除去代
を送り出す構成となつている。この結果、材料が
節約され、経済的になる。
Further, in this embodiment, the removal allowance removing device A is configured to send the removal allowance into a removal allowance recovery device 17 (FIG. 2) which collects the removal allowance 3a and returns it to the front and back of the kneading machine 1 for reuse. ing. This results in material savings and economy.

他の実施例として、切断装置21は外側のカツ
タ24bの代りに、第6図で示すように、真空吸
引体26を設け、内側の各カツタ24aが除去代
3aと生板本体を隔絶している間に、この真空吸
引体26を移動させて、除去代3aを排除する
か、あるいは静止状態の真空吸引体26が除去代
3aを吸引し、該除去代を載置していたパレツト
8が通過して次のパレツトが到着するまでの間に
その除去代を所望のベルトコンベア等の上へ落下
させるようにしてもよい。なお、真空吸引体26
の代わりにロボツトの腕等、他の同等の部材を用
いてもよいことは勿論である。
As another embodiment, the cutting device 21 is provided with a vacuum suction body 26 instead of the outer cutter 24b, as shown in FIG. During this time, the vacuum suction body 26 is moved to remove the removal allowance 3a, or the vacuum suction body 26 in a stationary state sucks the removal allowance 3a, and the pallet 8 on which the removal allowance was placed is removed. The removal allowance may be dropped onto a desired belt conveyor or the like after the pallet passes until the next pallet arrives. In addition, the vacuum suction body 26
Of course, other equivalent members, such as a robot arm, may be used instead.

(考案の効果) 以上説明してきたように、本考案によると両端
に除去代を設定され、且つ所定長さに切断された
生板を、切断前の生板の進行方向から横送りし、
少なくとも2枚のカツタが各除去代と生板本体と
を切断して隔絶している間に、除去代をカツタや
真空吸引体等の排除部材で取り除く構成としたの
で、生板本体に変形や曲がりおよび返りを発生さ
せずにバリを完全に取り除くことが可能となる。
それゆえ歩留が向上し、養生後の2次切断の必要
を極力少なくし、あるいは無しにすることができ
る。
(Effects of the invention) As explained above, according to the invention, a raw board with a removal allowance set at both ends and cut to a predetermined length is fed horizontally from the direction of movement of the raw board before cutting,
While at least two cutters cut and isolate each removal allowance from the green board body, the removal allowance is removed by a removal member such as a cutter or a vacuum suction body, so that the green board body is not deformed. It becomes possible to completely remove burrs without causing bending or warping.
Therefore, the yield is improved and the need for secondary cutting after curing can be minimized or eliminated.

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

第1図は本考案の一実施例にかかる除去代排除
装置を用いた押出成形装置を概略的に示す側面
図、第2図は第1図の平面図、第3図は第2図の
排除装置の拡大詳細正面図、第4図および第5図
は切断装置の作動説明図、第6図は切断装置の他
の実施例の概略説明図である。 1……混練機、2……押出機、3……生板、3
a……除去代、4……速度検出コンベア、5……
…引取コンベア、6……フリーローラ、7……移
載コンベア、8……パレツト、9……パレツト供
給装置、10……供給コンベア、11,12……
フリーローラ、13……早送りコンベア、14…
…カツタ、20……移送装置、21……切断装
置、22……ストツパ、23……横送りコンベ
ア、24a,24b……カツタ、25……パレツ
ト積載場所、26……真空吸引体。
FIG. 1 is a side view schematically showing an extrusion molding apparatus using a removal allowance elimination device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. An enlarged detailed front view of the device, FIGS. 4 and 5 are illustrations of the operation of the cutting device, and FIG. 6 is a schematic illustration of another embodiment of the cutting device. 1...Kneading machine, 2...Extruder, 3...Raw board, 3
a... Removal allowance, 4... Speed detection conveyor, 5...
... Taking conveyor, 6 ... Free roller, 7 ... Transfer conveyor, 8 ... Pallet, 9 ... Pallet supply device, 10 ... Supply conveyor, 11, 12 ...
Free roller, 13... Rapid feed conveyor, 14...
... cutter, 20 ... transfer device, 21 ... cutting device, 22 ... stopper, 23 ... lateral feed conveyor, 24a, 24b ... cutter, 25 ... pallet loading place, 26 ... vacuum suction body.

Claims (1)

【実用新案登録請求の範囲】 押出機2から押出成形された無機質板の生板3
を載置移送する引取コンベア5と、引き続きこの
生板3を載置移送する移載コンベア7上のパレツ
ト8と、前記引取コンベア5または前記パレツト
8上で前記生板3を所定長さに順次切断する一対
のカツタ14とから成る無機質板製造装置におい
て、前記所定長さに切断された生板3を載置した
パレツト8を前記移載コンベア7より引き続き載
置移送する移送装置20と、この移送装置20上
のパレツト8上に配備された前記所定長さの生板
3両端部より除去代3aを切断する切断装置21
とを備え、前記切断装置21は二対のカツタ24
a,24b;24a,24bを有し、各対のカツ
タ24a,24bは鋏状に開閉可能に構成される
とともに、各対のカツタ24a,24bは閉じた
状態で生板3の除去代3aを切断し、前記所定長
さの生板3の内側に位置する各カツタ24a,2
4bが除去代3aと生板3本体とを切断して隔絶
している間に、外側に位置するカツタ24a,2
4bがそれぞれ開いて除去代3aを外側へ排除す
るようになることを特徴とする押出成形無機質板
の除去装置。 (2) 前記カツタは、除去代を回収し混練機に戻し
て再使用させる除去代回収装置中へ除去代を送
り出すことを特徴とする実用新案登録請求の範
囲第1項記載の除去代排除装置。
[Scope of claims for utility model registration] Raw board 3 of inorganic board extruded from extruder 2
a pallet 8 on a transfer conveyor 7 that subsequently places and transfers the raw board 3; and a pallet 8 on the transfer conveyor 7 that subsequently places and transports the raw board 3; The inorganic plate manufacturing apparatus includes a pair of cutters 14 for cutting, and a transfer device 20 for successively placing and transferring the pallet 8 on which the green plate 3 cut into the predetermined length is placed from the transfer conveyor 7; a cutting device 21 for cutting the removal allowance 3a from both ends of the green plate 3 of the predetermined length disposed on the pallet 8 on the transfer device 20;
The cutting device 21 includes two pairs of cutters 24.
a, 24b; 24a, 24b, each pair of cutters 24a, 24b is configured to be openable and closable in the shape of scissors, and each pair of cutters 24a, 24b cuts the removal amount 3a of the raw board 3 in the closed state. Each cutter 24a, 2 is cut and placed inside the raw board 3 of the predetermined length.
While the cutter 4b is cutting and isolating the removal allowance 3a and the raw board 3 main body, the cutters 24a, 2 located on the outside
4b are each opened to remove the removal allowance 3a to the outside. (2) The removal allowance removal device according to claim 1, wherein the cutter sends the removal allowance into a removal allowance recovery device which collects the removal allowance and returns it to the kneading machine for reuse. .
JP1985196601U 1985-12-23 1985-12-23 Expired JPH0327772Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985196601U JPH0327772Y2 (en) 1985-12-23 1985-12-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985196601U JPH0327772Y2 (en) 1985-12-23 1985-12-23

Publications (2)

Publication Number Publication Date
JPS62104911U JPS62104911U (en) 1987-07-04
JPH0327772Y2 true JPH0327772Y2 (en) 1991-06-17

Family

ID=31155573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985196601U Expired JPH0327772Y2 (en) 1985-12-23 1985-12-23

Country Status (1)

Country Link
JP (1) JPH0327772Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5729054B2 (en) * 2011-03-18 2015-06-03 株式会社大林組 Method for producing cement-based composition

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57102304A (en) * 1980-12-18 1982-06-25 Showa Denko Kk Method and apparatus for manufacturing cement board material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57102304A (en) * 1980-12-18 1982-06-25 Showa Denko Kk Method and apparatus for manufacturing cement board material

Also Published As

Publication number Publication date
JPS62104911U (en) 1987-07-04

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