JPH0790532B2 - Method for producing fiber-reinforced inorganic molding - Google Patents
Method for producing fiber-reinforced inorganic moldingInfo
- Publication number
- JPH0790532B2 JPH0790532B2 JP2338413A JP33841390A JPH0790532B2 JP H0790532 B2 JPH0790532 B2 JP H0790532B2 JP 2338413 A JP2338413 A JP 2338413A JP 33841390 A JP33841390 A JP 33841390A JP H0790532 B2 JPH0790532 B2 JP H0790532B2
- Authority
- JP
- Japan
- Prior art keywords
- extrusion
- width
- fiber
- molded body
- molding
- 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 - Fee Related
Links
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- Moulds, Cores, Or Mandrels (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Description
本発明は、建築用のパネル、コーナー材等の製造に用い
て好適な無機質成形体の製造方法に関する。TECHNICAL FIELD The present invention relates to a method for producing an inorganic molded body that is suitable for use in the production of construction panels, corner materials and the like.
建築用パネル、コーナー材を製造する方法として、例え
ば、特開昭60−44303号公報、特開平２−99301号公報な
どにみられる技術が既に知られている。 これらの製造方法は、いずれも、セメントに骨材、繊維
補強材、水その他増粘剤などの配合物を混合したセメン
ト系組成物を、押出金型を有する押出成形機によって押
出成形し、略定寸寸法に切断して未硬化状態にある押出
成形体を造り、次いで、この成形体を押出成形体の形
状、寸法と略同寸法（該押出成形体の外寸、断面とプレ
ス成形用型の寸法が略同寸法）のプレス型内に装入して
プレス成形し、養生硬化させることにより繊維補強無機
質成形体を製造するようにしている。As a method of manufacturing a building panel and a corner material, for example, the techniques found in JP-A-60-44303 and JP-A-2-99301 are already known. Each of these production methods is a cement-based composition obtained by mixing a cement with an aggregate, a fiber reinforcing material, water and a mixture such as a thickener, and extruding the cement composition with an extruder having an extrusion die. An extruded body in an uncured state is produced by cutting it to a fixed size, and then this molded body is approximately the same in shape and size as the extruded body (external dimensions of the extruded body, cross section and press molding die). The fiber-reinforced inorganic molded body is manufactured by charging it into a press die having the same size (1), press-molding, and curing and curing.
しかし、繊維補強材が分散混合された組成物を押出成形
すると、組成物中の補強繊維が押出方向に配向した押出
成形体となってしまうため、得られる繊維補強無機質成
形体も繊維補強材が押出方向に配向したものとなってし
まう。 このような繊維補強無機質成形体は、衝撃、特に幅方向
（押出方向と直交する方向）端部に外力衝撃が加われ
ば、外力が押出方向（すなわち、繊維の配向方向）に沿
った折り曲げ力となって働くため、繊維の配向方向に沿
って欠けやクラッチ等が発生しやすいと言う欠点、すな
わち、輸送時や取り扱い時に、幅方向の端部に欠け、ク
ラック等の欠損が生じやすいという欠点があった。 本発明は、上記の問題点を解決するためのものであり、
その目的とするところは、幅方向の端部が強度的に弱い
という欠点を解消した繊維補強無機質成形体の製造方法
を提供することにある。However, when a composition in which the fiber reinforcement is dispersed and mixed is extrusion-molded, the reinforcing fibers in the composition become an extrusion-molded product oriented in the extrusion direction. It will be oriented in the extrusion direction. In such a fiber-reinforced inorganic molded article, when an impact, especially an external force impact is applied to the end portion in the width direction (direction orthogonal to the extrusion direction), the external force becomes a bending force along the extrusion direction (that is, the fiber orientation direction). Since it works well, there is a drawback that cracks and clutches are likely to occur along the fiber orientation direction, that is, defects such as cracks at the end in the width direction and cracks are likely to occur during transportation and handling. there were. The present invention is to solve the above problems,
It is an object of the invention to provide a method for producing a fiber-reinforced inorganic molded body, which eliminates the drawback that the widthwise end is weak in strength.
本発明は、このような目的を達成するために、繊維補強
材を含む水硬生無機物を主成分とする押出成形材料を所
定の厚み、幅に押出し、定尺に切断して、未硬化状態に
ある押出成形体を造り、この押出成形体を、内容積がこ
の押出成形体の体積と略同一か少し小さめで、かつ、前
記押出成形体の押出方向に直交する方向の幅が押出成形
体の幅より大きく、その厚みが押出成形体の厚みより薄
い成形型内で所望形状にプレス成形することを特徴とす
る繊維補強無機質成形体の製造方向を要旨としている。In order to achieve such an object, the present invention extrudes an extrusion molding material containing a hydraulic raw inorganic material as a main component containing a fiber reinforcing material to a predetermined thickness and width, and cuts to a fixed length to obtain an uncured state. Extruded body having an internal volume that is substantially the same as or slightly smaller than the volume of the extruded body, and the width of the extruded body in the direction orthogonal to the extrusion direction of the extruded body is The manufacturing direction of the fiber-reinforced inorganic molded body is characterized in that it is press-molded into a desired shape in a molding die having a thickness larger than the width of the extrusion molded body and a thickness smaller than the thickness of the extrusion molded body.
押出成形法によって押出された押出成形体中の補強繊維
の大部分は、押出方向に配向している。 そこで、予め目的とする繊維補強無機質成形体の形状よ
り幅方向（押出方向に直交する方向）が狭く、厚みが厚
くなった押出成形体を造り、この押出成形体を内容積が
その押出成形体の体積と略同一か少し小さめで、かつ、
前記押出成形体の押出方向に直交する方向の幅が押出成
形体の幅より大きく、その厚みが押出成形体の厚みより
薄い成形型内に入れてプレス成形すると、押出形成体と
プレス成形型との厚み差に相当する体積の前記押出成形
体の厚み部分が、成形型の閉塞によって幅方向に押し流
され、成形型の内幅一杯まで押拡げられて型内が組成物
で充填されることになる。 この流れにより前記押出成形体中の補強繊維も幅方向に
配向するものが多くなり、特に、幅方向端部においては
補強繊維が幅方向に配向するものの方が多くなる。Most of the reinforcing fibers in the extruded product extruded by the extrusion method are oriented in the extruding direction. Therefore, an extruded body having a narrower width direction (direction orthogonal to the extruding direction) and a larger thickness than the shape of the target fiber-reinforced inorganic molded body is prepared in advance. Is approximately the same as or slightly smaller than the volume of
When the width of the extrusion molded body in the direction orthogonal to the extrusion direction is larger than the width of the extrusion molded body and the thickness is smaller than the thickness of the extrusion molded body and press-molded, the extrusion molded body and the press molding die are formed. The thickness portion of the extrusion-molded body having a volume corresponding to the thickness difference is washed away in the width direction due to the closing of the molding die, is spread to the full inner width of the molding die, and the inside of the die is filled with the composition. Become. Due to this flow, many reinforcing fibers in the extruded body are oriented in the width direction, and particularly, the reinforcing fibers are oriented in the width direction at the ends in the width direction.
以下に、本発明を、その実施例をあらわす図面を参照し
つつ詳しく説明する。 本発明の製造方法を工程順に説明すると以下のようにな
る。 水硬性無機物、繊維補強材やその他の副配合物を予
め混合混練して得た組成物を押出成形機に入れ、押出成
形により所望形状の未硬化状態の押出成形体を得る。 なお、得られた押出成形体は、繊維補強材が押出方向に
配向している。 この押出成形体を、内容積がこの押出成形体の体積
と略同一か少し小さめで、かつ、前記押出成形体の押出
方向に直交する方向の幅が押出成形体の幅より大きく、
その厚みが押出成形体の厚みより薄い成形型内に入れて
所望形状にプレス成形する。 このプレス成形により押出成形体とプレス成形型との厚
み差に相当する体積の前記押出成形体の厚み部分が、成
形型の閉塞によって押出成形体の幅方向に押し流され、
成形型の内幅一杯まで押拡げられ、型内が隙間なく組成
物により充填される。そして、この流れにより前記押出
成形体中の補強繊維も幅方向に配向するものが多くな
り、特に、幅方向端部においては補強繊維が幅方向に配
向するものの方が多くなる。 なお、成形型は、特に限定されないが、その幅が前記押
出成形体の101％〜230％程度、その内部厚み（隙間）が
前記押出成形体の40％〜90％程度、その押出方向の長さ
が前記押出成形体と略同じか少し小さいめにしておくこ
とが好ましい。 また、押出成形体の幅寸法に対するプレス成形型の幅方
向の寸法の比が大きければ、大きい程、幅方向の配向割
合を大きくすることができる。 得られたプレス成形体を養生硬化して繊維補強無機
質成形体を得る。 上記水硬性無機物としては、ポルトランドセメント、ア
ルミナセメント、スラグセメント等のセメント、ケイ酸
カルシウム、石膏等が挙げられる。 繊維補強材としては、特に限定されないが、たとえば、
ポリプロピレン繊維、ポリエチレン繊維、ビニロン繊維
等の有機繊維、ウォラストナイト等の無機鉱物繊維など
が挙げられる。 また、組成物には、水硬性無機物および繊維補強材以外
は、増粘剤、骨材、軽量骨材等の副成分が必要に応じて
適宜添加されるようになっているが、増粘剤としては、
特に限定されないが、メチルセルロース、カルボキシル
メチルセルロース、ボリビニルアルコール等が挙げられ
る。 骨材としては、特に限定されないが、フライアッシェ、
シリカヒューム、ケイ砂等が挙げられる。 軽量骨材としては、特に限定されないが、発泡スチレン
ビーズ等の有機樹脂発泡体や、ガラスバルーン等の無機
中空骨材などが挙げられる。 なお、本発明の製造方法で得られる繊維補強無機質成形
体に、特に限定されないが、建築用のパネル、コーナー
材等の外壁材の他、屋外材、基礎材、塀、側溝等の建築
用材として利用できる。 （実施例） 第１図（ａ）にみるように、押出成形型（図示せず）の
金型から押出された押出成形体１を受台としての鋼板製
トレイ２に移動した後、トレイ２とともに、プレス下型
３およびプレス上型４を備えたプレス成形機（本体は図
示せず）の所まで移送してプレス下型３上に載置した。 次に、第１図（ｂ）にみるようにプレス上型４を降ろ
し、プレス成形圧10kg/cm2でプレス成形を行った。 なお、プレス上型４およびトレイ２により形成される型
の内部寸法は、押出方向が押出成形体１と同等で幅方向
が略150％、厚みが略70％になるように設定した。 そして、得られたプレス成形体を、トレイ２に載置した
状態でプレス成形機から取り出し、養生硬化させて、第
２図にみるような出隅側に所望の模様が形成された押出
方向の長さ400mm、直角な断面が250mmの等辺山形で、厚
みが約15mmのコーナー材５を製造した。 また、成形材料としては、次の配合組成のものを用い
た。 （Ａ）水硬性無機材料（ポルトランドセメント） 100部
（Ｂ）補強繊維（ポリプロ短繊維） ３重量部 （Ｃ）保水剤（メチルセルローズ） ２重量部 （Ｄ）骨材（フライアッシュ） 40重量部 （シリカヒューム） ５重量部 （Ｅ）水 35重量部 上記実施例で得たコーナー材５と、比較例として従来の
製造方法で得たコーナー材とをそれぞれその山辺等辺の
両脚下端がコンクリート面に水平に落下するように自然
落下させた所、実施例のものは、60cmの高さから落下さ
せても異常がなかったが、比較例のものは40cmの高さか
ら落下させるとクラックや欠けが生じた。また、両コー
ナー材から幅25mm、長さ150mmの試料をそれぞれ切り取
り、スパン100mmで支持し、2.5mm/minの速度で曲げる
と、比較例のものは、押出方向が120kg/cm2、幅方向が7
0kg/cm2であったのに対し、実施例のものは押出方向が1
30kg/cm2、幅方向が95kg/cm2と強度を増していることが
判った。 なお、プレス型の材質は、金属、樹脂、ゴム型など特に
限定されないが、たとえば、ゴム型の場合は、プレスの
時押出成形体の表面に加飾する時に有効である。加飾等
製品表面に凹凸の模様を施す時、プレス時の脱型時アン
ダーカット（型開き時のひっかかり）が生じるため、プ
レス上型をヒンジ機構や割型構造にする等、考慮する必
要がある。押出成形体形状は平板型、Ｌ型又は３個以上
の屈折押出断面をもった役物でも良く、その時はプレス
型形状も押出成形体形状に対応した形状とする。Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. The manufacturing method of the present invention will be described below in the order of steps. A composition obtained by previously mixing and kneading a hydraulic inorganic substance, a fiber reinforcing material and other sub-compounds is put into an extrusion molding machine and extrusion-molded to obtain an uncured extrusion molded body having a desired shape. In addition, in the obtained extrusion molded body, the fiber reinforcing material is oriented in the extrusion direction. This extrusion molded body, the internal volume is substantially the same as or slightly smaller than the volume of the extrusion molded body, and the width of the extrusion molded body in the direction orthogonal to the extrusion direction is larger than the width of the extrusion molded body,
It is put into a forming die whose thickness is thinner than that of the extrusion-molded body and press-formed into a desired shape. By this press molding, the thickness portion of the extrusion molded body having a volume corresponding to the thickness difference between the extrusion molded body and the press molding die is washed away in the width direction of the extrusion molded body by closing the molding die,
The composition is expanded to the full width of the mold, and the composition is filled in the mold without any gap. Due to this flow, many of the reinforcing fibers in the extruded body are oriented in the width direction, and particularly, the reinforcing fibers are oriented in the width direction at the ends in the width direction. The molding die is not particularly limited, but its width is about 101% to 230% of the extruded body, its internal thickness (gap) is about 40% to 90% of the extruded body, and its length in the extrusion direction. It is preferable that the above-mentioned extrusion molding is approximately the same as or slightly smaller than the extrusion molding. Also, the larger the ratio of the width dimension of the press mold to the width dimension of the extruded body, the larger the orientation ratio in the width direction can be made. The obtained press molded body is cured and cured to obtain a fiber-reinforced inorganic molded body. Examples of the hydraulic inorganic material include cement such as Portland cement, alumina cement and slag cement, calcium silicate, gypsum and the like. The fiber reinforcing material is not particularly limited, for example,
Examples thereof include polypropylene fibers, polyethylene fibers, vinylon fibers and other organic fibers, and wollastonite and other inorganic mineral fibers. Further, in addition to the hydraulic inorganic substance and the fiber reinforcing material, the composition is appropriately added with auxiliary components such as thickeners, aggregates, and lightweight aggregates, if necessary. as,
Although not particularly limited, examples thereof include methyl cellulose, carboxymethyl cellulose, polyvinyl alcohol and the like. The aggregate is not particularly limited, but includes fly asher,
Examples include silica fume and silica sand. The lightweight aggregate is not particularly limited, and examples thereof include organic resin foams such as expanded styrene beads and inorganic hollow aggregates such as glass balloons. The fiber-reinforced inorganic molded body obtained by the production method of the present invention is not particularly limited, but is also used as a building material such as a building panel, an outer wall material such as a corner material, an outdoor material, a foundation material, a fence, or a gutter. Available. (Example) As shown in Fig. 1 (a), after moving an extrusion molded body 1 extruded from a die of an extrusion molding die (not shown) to a steel plate tray 2 as a pedestal, a tray 2 At the same time, it was transferred to a press molding machine (main body not shown) equipped with the lower press die 3 and the upper press die 4 and placed on the lower press die 3. Next, as shown in FIG. 1 (b), the upper press mold 4 was lowered and press molding was performed at a press molding pressure of 10 kg / cm 2 . The internal dimensions of the mold formed by the upper press mold 4 and the tray 2 were set so that the extrusion direction was the same as that of the extrusion molded body 1, the width direction was about 150%, and the thickness was about 70%. Then, the obtained press-molded body is taken out from the press-molding machine in a state of being placed on the tray 2 and is cured and cured, so that a desired pattern is formed on the projected corner side as shown in FIG. A corner member 5 having a length of 400 mm, a right angle cross section of 250 mm and an equilateral mountain shape and a thickness of about 15 mm was manufactured. As the molding material, one having the following composition was used. (A) Hydraulic inorganic material (Portland cement) 100 parts (B) Reinforcing fiber (polypro short fiber) 3 parts by weight (C) Water retention agent (methyl cellulose) 2 parts by weight (D) Aggregate (fly ash) 40 parts by weight (Silica fume) 5 parts by weight (E) 35 parts by weight of water The corner material 5 obtained in the above-mentioned example and the corner material obtained by the conventional manufacturing method as a comparative example are respectively placed on the concrete surface at the lower ends of both legs on equal sides. When naturally dropped so as to drop horizontally, the ones of the examples were not abnormal even when dropped from a height of 60 cm, but the comparative examples had cracks and chips when dropped from a height of 40 cm. occured. In addition, when a sample with a width of 25 mm and a length of 150 mm was cut from each corner material, supported with a span of 100 mm, and bent at a speed of 2.5 mm / min, the comparative example had an extrusion direction of 120 kg / cm 2 and a width direction. Is 7
It was 0 kg / cm 2 , whereas in the example, the extrusion direction was 1
It was found that the strength was increased to 30 kg / cm 2 and 95 kg / cm 2 in the width direction. The material of the press die is not particularly limited to metal, resin, rubber die, etc. For example, in the case of a rubber die, it is effective when decorating the surface of the extruded product during pressing. When applying an uneven pattern to the surface of a product such as decoration, undercut may occur during demolding during pressing (a catch at the time of mold opening) .Therefore, it is necessary to consider using a hinge mechanism or split mold structure for the press upper mold. is there. The shape of the extruded product may be a flat plate type, an L type, or an accessory having three or more refraction extruded sections, and in that case, the shape of the press die is also a shape corresponding to the shape of the extruded product.
本発明にかかる繊維補強無機質成形体の製造方法は、以
上のように構成されているので、繊維補強材を幅方向に
も配向させることができ、輸送時、荷搬時の幅方向端部
の欠け、クラック、ワレ等の欠損は改良され、全体的に
も押出方向の繊維配向が改良され、強度が向上する。 また、押出成形品の製造の面でも広幅の押出成形体を作
るには、大きな能力の押出装置が必要となるが、本発明
を利用すれば小能力の設備で、狭幅の厚物押出形成体を
造り、プレス時に広幅のプレス型を用意すればよいの
で、経済的なメリットも大きいと言える。Since the method for producing a fiber-reinforced inorganic molded body according to the present invention is configured as described above, it is possible to orient the fiber-reinforced material in the width direction, and during transportation, at the end of the width direction during loading. Defects such as chips, cracks, and cracks are improved, fiber orientation in the extrusion direction is also improved, and strength is improved. Further, in terms of manufacturing an extrusion-molded product, in order to make a wide-width extrusion-molded product, an extruder with a large capacity is required. However, if the present invention is used, a small-capacity equipment can be used to form a narrow-thickness extrusion product. It can be said that the economical merit is great because it is enough to build a body and prepare a wide press die at the time of pressing.
第１図（ａ）、（ｂ）は、本発明の製造方法の１実施例
であるコーナー材の製造工程中、プレス工程を説明する
説明図であって、同図（ａ）はプレス前の状態をあらわ
し、同図（ｂ）はそのプレスした状態をあらわしてい
る。 第２図は第１図（ａ），（ｂ）で得たコーナー材を使用
した状態を説明する斜視図である。 １……押出成形体 ２……トレイ ３……プレス下型 ４……プレス上型 ５……コーナー材（繊維補強無機質成形体）FIGS. 1 (a) and 1 (b) are explanatory views for explaining a pressing step in the manufacturing process of a corner material, which is one embodiment of the manufacturing method of the present invention. FIG. The state is shown, and the figure (b) shows the pressed state. FIG. 2 is a perspective view illustrating a state in which the corner material obtained in FIGS. 1 (a) and 1 (b) is used. 1 ... Extruded product 2 ... Tray 3 ... Press lower mold 4 ... Press upper mold 5 ... Corner material (fiber reinforced inorganic molded product)
Claims (1)
む成形材料を所定の厚み、幅に押出し、定尺に切断し
て、未硬化状態にある押出成形体を造り、この押出成形
体を、内容積がこの押出成形体の体積と略同一か少し小
さめで、かつ、前記押出成形体の押出方向に直交する方
向の幅が押出成形体の幅より大きく、その厚みが押出成
形体の厚みより薄い成形型内で所望形状にプレス成形す
ることを特徴とする繊維補強無機質成形体の製造方法。1. An extruded body in an uncured state is produced by extruding a molding material containing a hydraulic inorganic material as a main component and a fiber reinforcing material to a predetermined thickness and width and cutting it to a predetermined length. The internal volume is substantially the same as or slightly smaller than the volume of the extruded body, and the width of the extruded body in the direction orthogonal to the extrusion direction is larger than the width of the extruded body, and the thickness of the extruded body is A method for producing a fiber-reinforced inorganic molding, which comprises press-molding into a desired shape in a molding die thinner than the thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2338413A JPH0790532B2 (en) | 1990-11-30 | 1990-11-30 | Method for producing fiber-reinforced inorganic molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2338413A JPH0790532B2 (en) | 1990-11-30 | 1990-11-30 | Method for producing fiber-reinforced inorganic molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04201509A JPH04201509A (en) | 1992-07-22 |
| JPH0790532B2 true JPH0790532B2 (en) | 1995-10-04 |
Family
ID=18317924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2338413A Expired - Fee Related JPH0790532B2 (en) | 1990-11-30 | 1990-11-30 | Method for producing fiber-reinforced inorganic molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0790532B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0850736A3 (en) * | 1992-09-16 | 1999-06-02 | Mino Ganryo Kagaku Corporation | Tile having a pattern and its manufacturing method |
| JP4566353B2 (en) * | 2000-07-19 | 2010-10-20 | 株式会社 エム アイ ジー | Manufacturing method for homogeneous corner members and outer corner members for ceramic outer wall materials |
| FR2885617B1 (en) * | 2005-05-12 | 2010-01-08 | Stephan Vogel | AGGLOMERATED WOOD BLOCKS |
-
1990
- 1990-11-30 JP JP2338413A patent/JPH0790532B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04201509A (en) | 1992-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |