JP2001328111A - Method for mold releasing inorganic green board - Google Patents

Method for mold releasing inorganic green board

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Publication number
JP2001328111A
JP2001328111A JP2000152192A JP2000152192A JP2001328111A JP 2001328111 A JP2001328111 A JP 2001328111A JP 2000152192 A JP2000152192 A JP 2000152192A JP 2000152192 A JP2000152192 A JP 2000152192A JP 2001328111 A JP2001328111 A JP 2001328111A
Authority
JP
Japan
Prior art keywords
raw
inorganic
plate
press
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.)
Pending
Application number
JP2000152192A
Other languages
Japanese (ja)
Inventor
Houman Shirasu
豊万 白數
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2000152192A priority Critical patent/JP2001328111A/en
Publication of JP2001328111A publication Critical patent/JP2001328111A/en
Pending legal-status Critical Current

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  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for mold releasing an inorganic green board without using a mold release oil wherein the green board molded product wherein an irregular pattern is formed on a surface can be uniformly and smoothly released from a mold, and deformation, breakage and the like are not generated. SOLUTION: In a press forming process wherein a required irregular pattern is formed by pushing a forming die onto a surface of the inorganic green board to press it by a press forming machine, by stretching a mold release sheet connected to both ends of an elastic body fixed to an outside of the forming die between the forming die and the inorganic green board, elastic body is drawn when the press forming machine is closed and the forming die is pushed onto the surface of the inorganic green board, and when the mold release sheet is pushed onto the inorganic green board along an inner surface shape of the forming die and after forming an irregular pattern on the surface of the inorganic green board, the press forming machine is opened, the elastic body is contracted, the mold release sheet is stretched again, and the green board molded product on which the irregular pattern is formed, is released from the forming die.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この出願の発明は、無機質板
生板の離型方法に関するものである。さらに詳しくは、
この出願の発明は、無機質板の製造におけるプレス成形
工程において、表面に凹凸模様を形成した生板成形品
を、離型油を使用することなく成形型から均一かつスム
ーズに離型させ、生板成形品の破損等を防止し、また、
離型性を向上させることのできる無機質板生板の離型方
法と、これを用いた無機質板の製造方法に関するもので
ある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for releasing an inorganic raw plate. For more information,
In the invention of this application, in a press forming step in the production of an inorganic plate, a raw plate molded product having an uneven pattern formed on a surface thereof is uniformly and smoothly released from a molding die without using a release oil. Prevents damage to molded products,
The present invention relates to a method for releasing a raw sheet of an inorganic plate capable of improving releasability, and a method for manufacturing an inorganic plate using the same.

【0002】[0002]

【従来の技術】従来より住宅等の外壁材、屋根材等の外
装材をはじめ、天井材等の内装材にもセメント系の無機
質板が広く用いられており、表面に柄、目地等の凹凸模
様が付与された多種多様の意匠を有するものが提供され
ている。
2. Description of the Related Art Conventionally, cement-based inorganic plates have been widely used for interior materials such as ceiling materials, as well as exterior materials such as exterior wall materials and roofing materials for houses and the like, and irregularities such as patterns and joints on the surface. A variety of designs provided with a pattern are provided.

【0003】このような無機質板では、表面の凹凸模様
の形成は、通常、プレス成形工程において行われる。す
なわち、押出しや注型、又は抄造によって作製された無
機質板生板を、プレス成形機でプレス成形し、その表面
に所望の凹凸模様を形成させるのである。
[0003] In such an inorganic plate, the formation of an uneven pattern on the surface is usually performed in a press molding step. That is, an inorganic raw plate produced by extrusion, casting, or papermaking is press-formed by a press-forming machine to form a desired concavo-convex pattern on its surface.

【0004】図3は従来のセメント系生板の成形工程を
示した工程断面図であるが、図3(a)に示したよう
に、プレス成形機(1)において、押出し、注型、又は
抄造によって作製された無機質板生板(2)を成形型
(3a、3b)で挟み、上部の成形型(3a)を無機質
板生板(2)の表面に押し付け、プレスして成形型(3
a)の型面(4)に対応する凹凸模様を形成させる。
FIG. 3 is a sectional view showing a conventional molding process of a cement-based green sheet. As shown in FIG. 3 (a), in a press molding machine (1), extrusion, casting, or molding is performed. The raw inorganic plate (2) produced by papermaking is sandwiched between forming dies (3a, 3b), and the upper forming die (3a) is pressed against the surface of the raw inorganic plate (2) and pressed to form the forming die (3).
An uneven pattern corresponding to the mold surface (4) of a) is formed.

【0005】このような無機質板生板(2)のプレス成
形においては、図3(d)に示されるような表面に凹凸
模様が形成された生板成形品(5)が、成形型(3a)
に密着し、離型が困難になるという問題が指摘されてい
た。
[0005] In the press forming of such an inorganic raw plate (2), a raw plate molded product (5) having an uneven pattern formed on the surface as shown in FIG. )
It has been pointed out that the mold is difficult to release.

【0006】そこで、改善策として、図3(b)に示し
たように、プレス成形前に無機質板生板(2)表面に成
形型(3a)との密着を防ぐ離型油(6)を塗布し、成
形型(3a)内部に形成されたエアー通路(7)から、
図3(c)に示したように、凹凸模様を形成された生板
成形品(5)表面にエアー(8)を吹き付け、成形型
(3a)から離型させる方法が提案されている。いわゆ
るエアーノックアウト離型である。
Therefore, as an improvement measure, as shown in FIG. 3 (b), a release oil (6) for preventing the close contact with the molding die (3a) is applied to the surface of the raw inorganic plate (2) before press molding. From the air passage (7) formed inside the mold (3a)
As shown in FIG. 3 (c), a method has been proposed in which air (8) is blown onto the surface of a raw plate molded product (5) on which a concavo-convex pattern is formed, and the mold is released from a molding die (3a). This is a so-called air knockout release.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、その後
の検討により、上記提案技術にも改善の余地が残されて
いることが明らかになった。つまり、エアー(8)の吹
き付けにより、生板成形品(5)の離型時に生板成形品
(5)にかかる圧力が、生板成形品(5)の各箇所で異
なり、離型性が悪くなるという問題があったのである。
また、エアー(8)吹き付け圧力のバラツキにより、離
型時に凹凸模様が変形してしまったり、生板成形品
(5)が破損してしまう場合が多かったのである。その
ために、生板成形品(5)の生産性が低下してしまって
いたのが実情である。
However, subsequent studies have revealed that there is still room for improvement in the above proposed technology. That is, the pressure applied to the green sheet molded product (5) at the time of releasing the green sheet molded article (5) by the blowing of the air (8) differs at each position of the green sheet molded article (5), and the releasability is reduced. There was a problem of getting worse.
In addition, the unevenness of the air (8) blowing pressure often deforms the concavo-convex pattern at the time of mold release or breaks the green sheet molded product (5). As a result, the fact is that the productivity of the green sheet molded product (5) has been reduced.

【0008】さらに、上記提案技術において、無機質板
生板(2)表面に塗布される離型油(6)の多くは、プ
レス成形工程や、プレス成形後の養生または乾燥工程に
おいて、気化し、除去されるものの、少量が成形型(3
a)や生板成形品(5)の表面に残存するため、不純物
として生板成形品(5)表面や内部に付着あるいは導入
されてしまうという問題もあった。それにより、無機質
板表面の美麗さが損なわれたり、無機質板の強度が低下
するという問題がしばしば生じていたのが実情である。
Further, in the above proposed technique, most of the release oil (6) applied to the surface of the raw inorganic plate (2) is vaporized in a press forming step and a curing or drying step after the press forming. Although removed, a small amount of mold (3
a) and remaining on the surface of the raw plate molded product (5), there is also a problem that it is attached or introduced as an impurity to the surface or inside of the raw plate molded product (5). As a result, the fact that the beauty of the surface of the inorganic plate is impaired or the strength of the inorganic plate is reduced often arises.

【0009】また、離型油(6)の使用により、その蒸
気や分解ガスが発生するため、作業者の安全や環境保全
への配慮からも、離型油(6)の使用は好ましいとは言
い難かったのである。さらに、離型油(6)の使用量
は、無機質板生板(2)1坪あたり0.8L程度であ
り、離型油(6)を使用しない工程を採用できれば、費
用削減にもつながると考えられていた。
In addition, since the use of the release oil (6) generates steam and decomposition gas, the use of the release oil (6) is not preferable in consideration of the safety of workers and environmental protection. It was hard to say. Furthermore, the amount of the release oil (6) used is about 0.8 L per tsubo of the raw inorganic plate (2), and if a process that does not use the release oil (6) can be adopted, it will lead to cost reduction. Was thought.

【0010】[0010]

【課題を解決するための手段】そこで、この出願の発明
は、上記の課題を解決するものとして、第1には、無機
質板生板の表面に成形型を押し付け、プレス成形機でプ
レスすることにより所望の凹凸模様を形成させるプレス
成形工程において、成形型と無機質板生板の間に、成形
型外部に固定された弾性体に両端を接続された離型シー
トを張ることにより、プレス成形機が閉じて成形型が無
機質板生板の表面に押し付けられる際には弾性体が延伸
し、該離型シートが成形型内面形状に沿って無機質板生
板に押し付けられ、無機質板生板表面に凹凸模様が形成
された後、プレス成形機が開いた際には、弾性体が収縮
して離型シートが再び張り、凹凸模様が形成された生板
成形品が成形型から離型されることを特徴とする無機質
板生板の離型方法を提供する。
Accordingly, the invention of the present application is to solve the above-mentioned problems by firstly pressing a forming die against the surface of an inorganic raw plate and pressing it with a press forming machine. In the press forming step of forming a desired concavo-convex pattern, the press forming machine is closed by stretching a release sheet having both ends connected to an elastic body fixed to the outside of the forming die between the forming die and the raw inorganic plate. When the forming die is pressed against the surface of the raw inorganic plate, the elastic body stretches, and the release sheet is pressed against the raw raw inorganic plate along the inner surface shape of the forming die, so that the surface of the raw raw inorganic plate has an uneven pattern. After the press molding machine is opened after the formation, the elastic body shrinks and the release sheet is stretched again, and the raw sheet molded product on which the uneven pattern is formed is released from the mold. Release method for raw inorganic plate To provide.

【0011】また、この出願の発明は、第2には、離型
シートが、樹脂シート、織物、または不織布である前記
の離型方法を、第3には、弾性体が、コイルバネ、シー
トまたは紐の形状を有している前記の離型方法を提供す
る。
[0011] The invention of this application also provides, secondly, the above-mentioned release method in which the release sheet is a resin sheet, a woven fabric, or a non-woven fabric; The above-described mold release method having a cord shape is provided.

【0012】そしてこの出願の発明は、第4には、以上
のような離型方法が、無機質板製造のための全工程の少
なくとも一部であるプレス成形工程において実施される
ことを特徴とする無機質板の製造方法をも提供する。
Fourthly, the invention of this application is characterized in that the above-mentioned mold release method is carried out in a press molding step which is at least a part of all steps for producing an inorganic plate. A method for producing an inorganic plate is also provided.

【0013】[0013]

【発明の実施の形態】この出願の発明は、前記のとおり
の特徴をもつものであるが、以下、添付した図面に沿っ
て、また、実施例を示しつつ、発明の実施の形態につい
てさらに詳しく説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention of this application has the features as described above. Hereinafter, embodiments of the invention will be described in more detail with reference to the accompanying drawings and examples. explain.

【0014】図1は、この出願の発明の離型方法の一実
施形態を示した要部断面図である。この出願の発明の無
機質板生板の離型方法では、例えばこの図1に示したよ
うに、図1(b)プレス成形工程において、プレス成形
機(1)に設置された成形型(3a)と無機質板生板
(2)の間に、成形型(3a)の外部に固定されたコイ
ルバネよりなる弾性体(9)に、接続された離型シート
(10)が張られる。
FIG. 1 is a sectional view of an essential part showing an embodiment of a mold release method according to the invention of the present application. In the method for releasing a raw inorganic plate according to the invention of the present application, for example, as shown in FIG. 1, in the press forming step of FIG. 1B, the forming die (3a) installed in the press forming machine (1) A release sheet (10) connected to an elastic body (9) composed of a coil spring fixed to the outside of the forming die (3a) is stretched between the raw sheet and the inorganic raw plate (2).

【0015】これにより、図1(a)プレス成形機
(1)が閉じて、成形型(3a)が無機質板生板表面
(2)に押し付けられたときには、弾性体(9)が延伸
し、成形型(3a)の凹凸形状に沿って離型シート(1
0)が成形型(3a)の型面(4)を覆う。このとき、
無機質板生板(2)には、成形型(3a)によって凹凸
模様が施されるが、離型シート(10)は、成形型(3
a)の型面(4)に沿って無機質板生板(2)に押し付
けられるため、この凹凸模様の変形や、生板成形品
(5)の破損等を発生させない。
As a result, when the press forming machine (1) is closed and the forming die (3a) is pressed against the surface (2) of the raw inorganic plate, the elastic body (9) is stretched, as shown in FIG. The release sheet (1) is formed along the uneven shape of the molding die (3a).
0) covers the mold surface (4) of the mold (3a). At this time,
The inorganic raw plate (2) is provided with a concavo-convex pattern by a molding die (3a), and the release sheet (10) is formed by a molding die (3).
Since it is pressed against the raw inorganic plate (2) along the mold surface (4) of (a), deformation of this uneven pattern and breakage of the raw plate molded product (5) do not occur.

【0016】この出願の発明の無機質板生板の離型方法
においては、成形型(3a)と無機質板生板(2)の間
に張られる離型シート(10)は、プレス成形によって
劣化したり、破損したりしない程度の強度を有し、プレ
ス成形後に生板成形品(5)の表面に繊維や粉体等によ
る不純物を残存させず、また、織目や縫目などの模様を
転写させないものであれば、どのような材料からなるも
のであってもよい。例えば、ポリプロピレンやポリエチ
レンなどの合成樹脂を従来の各手法によりシート化した
樹脂シート、ナイロンやポリウレタン等の合成繊維から
なる織物や不織布などが好適に選択される。もちろん、
これらに限定されず、天然化合物、合成化合物からなる
種々の材料や、それらの材料の組み合せが考慮される。
In the method for releasing an inorganic raw plate according to the present invention, the release sheet (10) stretched between the forming die (3a) and the inorganic raw plate (2) is deteriorated by press forming. It is strong enough not to break or break, does not leave any impurities such as fibers or powders on the surface of the raw sheet molded product (5) after press molding, and transfers patterns such as textures and seams. Any material may be used as long as it is not allowed to do so. For example, a resin sheet obtained by sheeting a synthetic resin such as polypropylene or polyethylene by a conventional method, or a woven or nonwoven fabric made of synthetic fibers such as nylon or polyurethane is suitably selected. of course,
The invention is not limited thereto, and various materials composed of natural compounds and synthetic compounds, and combinations of those materials are considered.

【0017】このような離型シート(10)の厚さはと
くに限定されないが、プレス圧力によって破れたり、劣
化したりしない程度に厚いことが好ましい。あまり薄け
れば接続されている弾性体の弾性に耐えられず、脆性的
に、または延性的に破壊する可能性がある。また、張力
が足りず、プレス成形後に成形型(3a)から生板成形
品(5)が離型されない可能性がある。反対に、離型シ
ート(10)の厚さがあまり厚い場合には、柔軟性が不
足し、プレス成形機(1)を閉じてもシートが成形型
(3a)の型面(4)に沿わず、生板成形品(5)に成
形型(3a)の凹凸模様が転写されないことが考えら
れ、好ましくない。以上より、この出願の発明の無機質
板生板の離型方法では、離型シート(10)の厚さとし
ては、例えば1〜5mmとすることができる。しかし、
最適な厚さは、離型シート(10)の材質やプレス成形
の条件、成形型(3a、3b)の形状等に応じて変わる
ため、これに限定されない。
Although the thickness of the release sheet (10) is not particularly limited, it is preferable that the release sheet (10) is thick enough not to be broken or deteriorated by the pressing pressure. If it is too thin, it cannot withstand the elasticity of the connected elastic body, and may be brittlely or ductilely broken. Further, there is a possibility that the green sheet molded product (5) is not released from the molding die (3a) after the press molding due to insufficient tension. Conversely, if the release sheet (10) is too thick, the flexibility is insufficient, and the sheet follows the mold surface (4) of the mold (3a) even when the press molding machine (1) is closed. However, it is conceivable that the uneven pattern of the mold (3a) is not transferred to the green sheet molded product (5), which is not preferable. As described above, in the method for releasing a raw inorganic plate of the present invention, the thickness of the release sheet (10) can be, for example, 1 to 5 mm. But,
The optimal thickness varies according to the material of the release sheet (10), the conditions for press molding, the shape of the molds (3a, 3b), and the like, and is not limited thereto.

【0018】さらに、この出願の発明の無機質板生板の
離型方法では、離型シート(10)の幅や長さは、とく
に限定されず、目的とする無機質板の形状や大きさ、さ
らには成形型(3a、3b)の形状に応じて変更される
ものである。例えば波形瓦を作製する場合と、溝を有す
る外壁材を作製する場合とでは、離型シート(10)の
幅や長さは異なるものとなる。
Further, in the method for releasing a raw inorganic plate of the present invention, the width and length of the release sheet (10) are not particularly limited, and the shape and size of the intended inorganic plate and Is changed according to the shape of the mold (3a, 3b). For example, the width and the length of the release sheet (10) are different between a case where a corrugated tile is manufactured and a case where an outer wall material having a groove is manufactured.

【0019】また、成形型(3a、3b)において凹凸
が多ければプレス成形工程において、離型シート(1
0)が無機質板生板(2)に押し付けられた際に、型面
(4)の凹凸部分に離型シート(10)が沿うため、離
型シート(10)の幅や長さは実際の生板成形品(5)
の幅や長さよりも大きなものとすることが必要になる。
If there are many irregularities in the molds (3a, 3b), the release sheet (1) is used in the press molding step.
When the release sheet (10) is pressed against the raw inorganic plate (2), the release sheet (10) follows the concave and convex portions of the mold surface (4). Raw plate molded product (5)
It must be larger than the width and length of the

【0020】この出願の発明の無機質板生板の離型方法
では、このような離型シート(10)は、プレス成形機
(1)によって圧力が付加されていないときには、成形
型(3a)と無機質板生板(2)の間で弛みなく張られ
ているが、プレス成形機(1)が閉じられて圧力が付与
されるときには、この離型シート(10)が接続されて
いる弾性体(9)の延伸により成形型(3a)の型面
(4)の形状に沿って、成形型(3a)内面を覆い、無
機質板生板(2)に押し付けられるものである。
In the method for releasing a raw inorganic plate according to the invention of the present application, such a release sheet (10) is formed into a mold (3a) when pressure is not applied by a press molding machine (1). It is stretched without slack between the inorganic raw plates (2), but when the press forming machine (1) is closed and pressure is applied, the elastic body (10) to which the release sheet (10) is connected is connected. The inner surface of the forming die (3a) is covered along the shape of the mold surface (4) of the forming die (3a) by the stretching of 9), and is pressed against the raw inorganic plate (2).

【0021】そして、この離型シート(10)は、プレ
ス成形機(1)が開かれると、離型シート(10)が接
続している弾性体(9)の収縮により再び張られるた
め、その作用により成形型(3a)から離れ、合わせて
生板成形品(5)も成形型(3a)から離型されるので
ある。
When the press forming machine (1) is opened, the release sheet (10) is stretched again by the contraction of the elastic body (9) to which the release sheet (10) is connected. The green sheet molded product (5) is released from the molding die (3a) together with the molding die (3a) by the action.

【0022】さらに、この出願の発明の無機質板生板の
離型方法では、上記の離型シート(10)が接続される
弾性体(9)は、上記コイルバネの他、弾性シート、紐
等の各種材質、形状のものであってよいが、ばね定数や
張力は、プレス成形機(1)のプレス圧力や離型シート
(10)の強度との均衡が得られるように選択されるべ
きものである。つまり、プレス成形機(1)によって成
形型(3a)および無機質板生板(2)に圧力が付加さ
れるときには、弾性体(9)は延伸し、プレス成形後に
圧力が除去されたときには、弾性体(9)は収縮して、
接続されている離型シート(10)が張り、その張力に
よって生板成形品(5)が成形型(3a)から離型され
なくてはならないのである。
Further, in the method of releasing an inorganic raw plate according to the invention of the present application, the elastic body (9) to which the release sheet (10) is connected is not limited to the coil spring, but may be an elastic sheet or a string. Although various materials and shapes may be used, the spring constant and the tension should be selected so as to obtain a balance with the pressing pressure of the press molding machine (1) and the strength of the release sheet (10). is there. That is, when pressure is applied to the forming die (3a) and the raw inorganic plate (2) by the press forming machine (1), the elastic body (9) is stretched. The body (9) contracts,
The connected release sheet (10) is stretched, and the raw sheet molded product (5) must be released from the molding die (3a) by the tension.

【0023】また、上記のとおりの弾性体(9)は、離
型シート(10)の平行な2辺に接続されている。接続
方法は、弾性体(9)や離型シート(10)の張力に耐
えられる強度を付与することができれば、縫製、金具、
熱圧着等、どのようなものであってもよい。さらに、離
型シート(10)の平行な2辺においては、弾性体
(9)は、離型シート(10)に歪みや弛みを生じさせ
ることなく、離型シート(10)を張ったり、成形型
(3a)に沿って型面(4)を覆ったりできれば、接続
される数や間隔はとくに限定されない。
The elastic body (9) as described above is connected to two parallel sides of the release sheet (10). The connection method may be sewing, metal fittings, or the like, as long as the strength can withstand the tension of the elastic body (9) or the release sheet (10).
Any type such as thermocompression bonding may be used. Further, on two parallel sides of the release sheet (10), the elastic body (9) stretches or molds the release sheet (10) without causing distortion or slack in the release sheet (10). As long as the mold surface (4) can be covered along the mold (3a), the number and intervals to be connected are not particularly limited.

【0024】また、弾性体(9)は、プレス成形機
(1)の動きによって移動してはならないが、プレス成
形機(1)の動きに応じて延伸・収縮する必要がある。
このような条件を満たしていれば、弾性体(9)は、プ
レス成形機(1)の一部に固定化されていてもよいし、
別個に壁、支柱、装置等に固定化されていてもよい。
The elastic body (9) must not be moved by the movement of the press molding machine (1), but must be stretched and contracted according to the movement of the press molding machine (1).
If such a condition is satisfied, the elastic body (9) may be fixed to a part of the press molding machine (1),
It may be separately fixed to a wall, a column, a device, or the like.

【0025】以上のような弾性体(9)を構成する素材
については、樹脂、金属、合金、あるいはゴム、さらに
はそれらのうちの2種以上からなる複合材料等の各種の
ものであってもよい。
The material constituting the elastic body (9) as described above may be various kinds of materials such as resin, metal, alloy, rubber, and a composite material composed of two or more of them. Good.

【0026】そして、この出願の発明の以上のとおりの
離型方法は、建築用の外装材や内装材としての無機質板
の製造において、全工程の少なくとも一部を構成するプ
レス成形工程で、効果的に採用されることになる。
The above-described mold release method according to the invention of the present application is effective in a press forming step that constitutes at least a part of all steps in the production of an inorganic plate as a building exterior material or interior material. Will be adopted.

【0027】以下、実施例を示し、この発明の実施の形
態についてさらに詳しく説明する。もちろん、この発明
は以下の例に限定されるものではなく、細部については
様々な態様が可能であることは言うまでもない。
Hereinafter, examples will be shown, and embodiments of the present invention will be described in more detail. Of course, the present invention is not limited to the following examples, and it goes without saying that various aspects are possible in detail.

【0028】[0028]

【実施例】実施例1 外壁用無機質板生板のプレス成形 セメント、珪砂、補強繊維等の原料をブレンドし、水を
加えて混合したスラリーを抄造して無機質板生板(2)
を得た。(厚さ:30mm、幅:900mm、長さ30
00mm) この無機質板生板(2)を図1(a)および(b)に示
したとおり、プレス成形機(1)により、平均プレス圧
50〜80kg/cm2でプレスし、表面に凹凸模様を
形成させた。このとき、離型シート(10)として、厚
さ2mm、幅1200mm、長さ3500mmのナイロ
ン基布をコイルバネを介して弛みなく張った。
EXAMPLES Example 1 Press-molding of raw inorganic plate for exterior wall Raw materials such as cement, silica sand, reinforcing fiber, etc. are blended, water is added and mixed to form a slurry, and a raw inorganic plate is prepared (2).
I got (Thickness: 30 mm, width: 900 mm, length 30
00 mm) As shown in FIGS. 1 (a) and 1 (b), the raw inorganic plate (2) is pressed by a press molding machine (1) at an average pressing pressure of 50 to 80 kg / cm 2 , and the surface has an uneven pattern. Was formed. At this time, a nylon base cloth having a thickness of 2 mm, a width of 1200 mm, and a length of 3500 mm was stretched as a release sheet (10) through a coil spring without loosening.

【0029】プレス成形後、プレス成形機(1)を開い
たところ、離型シート(10)が張り、成形型(3a)
から生板成形品(5)がスムーズに離型された。得られ
た生板成形品(5)は、目地曲がり等の変形や破損等が
見られず、良好なものであった。実施例2 波形瓦用無機質板生板のプレス成形 セメント、珪砂、補強繊維等の原料をブレンドし、水を
加えて混合したスラリーを抄造して無機質板生板(2)
を得た。この無機質板生板(2)を実施例1と同様の条
件で図2(a)および(b)に示されるような波形瓦用
の成形型(3a、3b)を用い、プレス成形し、波形瓦
状の生板成形品(5)を得た。
After press molding, when the press molding machine (1) is opened, the release sheet (10) is stretched and the molding die (3a)
The raw plate molded product (5) was released from the mold smoothly. The obtained green sheet molded product (5) was good without any deformation or breakage such as joint bending or the like. Example 2 Press-molding of raw inorganic board for corrugated tile Raw materials such as cement, silica sand, reinforcing fiber, etc. are blended, water is added and mixed to form a slurry, and the raw green board (2)
I got This inorganic raw plate (2) is press-formed under the same conditions as in Example 1 using a corrugated tile forming die (3a, 3b) as shown in FIGS. A tile-shaped raw plate molded product (5) was obtained.

【0030】得られた生板成形品(5)は、変形や破損
等が見られず、良好なものであった。比較例1 従来法による外壁用無機質板生板のプレス成
実施例1と同様に無機質板生板(2)を作成し、図3
(c)および(d)に示したとおり、従来法により離型
シート(10)を張らずにプレス成形機(1)で平均プ
レス圧力50〜80kg/cm2でプレス成形した。
The obtained raw plate molded product (5) was good without any deformation or breakage. Comparative Example 1 Press forming of raw inorganic plate for exterior wall by conventional method
Create inorganic board raw plate in the same manner as the form in Example 1 (2), 3
As shown in (c) and (d), press molding was carried out by a conventional method at an average pressing pressure of 50 to 80 kg / cm 2 by a press molding machine (1) without stretching a release sheet (10).

【0031】その後、得られた生板成形品(5)をエア
ー(8)の吹き出しにより離型した。得られた生板成形
品(5)には、凹凸模様の変形や破損が確認された。
Thereafter, the obtained green sheet molded product (5) was released by blowing air (8). Deformation and breakage of the concavo-convex pattern were confirmed in the obtained raw plate molded product (5).

【0032】[0032]

【発明の効果】以上詳しく説明した通り、この出願の発
明の無機質板生板の離型方法によって、無機質板の製造
におけるプレス成形工程において、表面に凹凸模様を形
成した生板成形品を、成形型から均一かつスムーズに離
型させることができる。また、これにより変形や破損等
の発生は防止され、離型性が向上する。さらには、離型
油の使用を必要としないため、安全性が高く、かつ費用
も削減される。よって、無機質板生板のプレス成形効率
が高まり、無機質板の生産性向上にも寄与する。
As described above in detail, in the press forming step in the production of an inorganic plate, a raw plate molded product having an uneven pattern formed on its surface is formed by the method of releasing an inorganic plate raw plate of the present invention. The mold can be uniformly and smoothly released from the mold. In addition, this prevents deformation, breakage, and the like, and improves releasability. Furthermore, since the use of the release oil is not required, the safety is high and the cost is reduced. Accordingly, the press forming efficiency of the raw inorganic plate is increased, and the productivity of the inorganic plate is also improved.

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

【図1】この出願の発明の離型方法の一実施形態を示し
た要部断面図である。
FIG. 1 is a sectional view of a main part showing an embodiment of a mold release method of the present invention.

【図2】この出願の発明の離型方法を用いて波形瓦の生
板成形品を成形する一実施形態を示した工程断面図であ
る。
FIG. 2 is a process cross-sectional view showing one embodiment of forming a raw sheet molded product of corrugated tile using the mold release method of the invention of this application.

【図3】従来のセメント系生板の成形工程を示した工程
断面図である。
FIG. 3 is a process cross-sectional view showing a conventional process for forming a cement-based green sheet.

【符号の説明】[Explanation of symbols]

1 プレス成形機 2 無機質板生板 3a 成形型(上部) 3b 成形型(下部) 4 型面 5 生板成形品 6 離型油 7 エアー通路 8 エアー 9 弾性体 10 離型シート DESCRIPTION OF SYMBOLS 1 Press molding machine 2 Inorganic raw plate 3a Mold (upper part) 3b Mold (lower part) 4 Mold surface 5 Raw plate molded product 6 Release oil 7 Air passage 8 Air 9 Elastic body 10 Release sheet

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 無機質板生板の表面に成形型を押し付
け、プレス成形機でプレスすることにより所望の凹凸模
様を形成させるプレス成形工程において、成形型と無機
質板生板の間に、成形型外部に固定された弾性体に両端
を接続された離型シートを張ることにより、プレス成形
機が閉じて成形型が無機質板生板の表面に押し付けられ
る際には弾性体が延伸し、該離型シートが成形型内面形
状に沿って無機質板生板に押し付けられ、無機質板生板
表面に凹凸模様が形成された後、プレス成形機が開いた
際には、弾性体が収縮して離型シートが再び張り、凹凸
模様が形成された生板成形品が成形型から離型されるこ
とを特徴とする無機質板生板の離型方法。
In a press forming step of pressing a forming die against the surface of an inorganic raw plate and pressing the same with a press forming machine to form a desired uneven pattern, a press is formed between the forming die and the inorganic raw plate outside the forming die. By stretching the release sheet having both ends connected to the fixed elastic body, the elastic body is stretched when the press forming machine is closed and the mold is pressed against the surface of the inorganic raw plate, and the release sheet is stretched. Is pressed against the raw inorganic plate along the inner surface shape of the forming die, and after the uneven pattern is formed on the surface of the raw inorganic plate, when the press molding machine is opened, the elastic body contracts and the release sheet A method for releasing an inorganic raw plate, wherein the raw plate molded product on which the uneven pattern is formed is released from the mold.
【請求項2】 離型シートが、樹脂シート、織物、また
は不織布である請求項1の無機質板生板の離型方法。
2. The method according to claim 1, wherein the release sheet is a resin sheet, a woven fabric, or a nonwoven fabric.
【請求項3】 弾性体が、コイルバネ、シート、または
紐の形状を有している請求項1または2の無機質板生板
の離型方法。
3. The method according to claim 1, wherein the elastic body has a shape of a coil spring, a sheet, or a string.
【請求項4】 請求項1ないし3のいずれかの離型方法
が全工程の少なくとも一部としてのプレス成形工程にお
いて実施されることを特徴とする無機質板の製造方法。
4. A method for producing an inorganic plate, wherein the release method according to claim 1 is carried out in a press forming step as at least a part of all steps.
JP2000152192A 2000-05-23 2000-05-23 Method for mold releasing inorganic green board Pending JP2001328111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000152192A JP2001328111A (en) 2000-05-23 2000-05-23 Method for mold releasing inorganic green board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000152192A JP2001328111A (en) 2000-05-23 2000-05-23 Method for mold releasing inorganic green board

Publications (1)

Publication Number Publication Date
JP2001328111A true JP2001328111A (en) 2001-11-27

Family

ID=18657647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000152192A Pending JP2001328111A (en) 2000-05-23 2000-05-23 Method for mold releasing inorganic green board

Country Status (1)

Country Link
JP (1) JP2001328111A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008246774A (en) * 2007-03-29 2008-10-16 Kubota Matsushitadenko Exterior Works Ltd Press machine
JP2013510018A (en) * 2009-11-04 2013-03-21 ブトン・アクチボラゲット Cast sheet and method for producing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008246774A (en) * 2007-03-29 2008-10-16 Kubota Matsushitadenko Exterior Works Ltd Press machine
JP2013510018A (en) * 2009-11-04 2013-03-21 ブトン・アクチボラゲット Cast sheet and method for producing the same

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