JPH0791129B2 - Manufacturing method for lightweight building materials - Google Patents
Manufacturing method for lightweight building materialsInfo
- Publication number
- JPH0791129B2 JPH0791129B2 JP413889A JP413889A JPH0791129B2 JP H0791129 B2 JPH0791129 B2 JP H0791129B2 JP 413889 A JP413889 A JP 413889A JP 413889 A JP413889 A JP 413889A JP H0791129 B2 JPH0791129 B2 JP H0791129B2
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- molded
- manufacturing
- lightweight building
- extruder
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、表面が平滑化された軽量建材を製造する製造
方法に関するものである。TECHNICAL FIELD The present invention relates to a manufacturing method for manufacturing a lightweight building material having a smooth surface.
（従来の技術） 従来より、セメント、石膏等の水硬性材料に熱可塑性プ
ラスチック発泡粒子（以下、単に発泡粒子という）を混
入して成形体を押出成形し、この成形体を養生硬化させ
て軽量建材を製造することが、広く知られている。しか
し、この水硬性材料に混入した発泡粒子は、押出成形直
後、スプリングバック現象によって成形体の表面に浮出
し、この浮出した発泡粒子によって成形体の表面が平滑
にならないという不都合が生じていた。そのため、この
浮出した発泡粒子を研削することによって、成形体の表
面を平滑化することが行われていた（例えば、特開昭59
−127709号公報参照）。(Prior Art) Conventionally, thermoplastic plastic foam particles (hereinafter simply referred to as foam particles) are mixed into a hydraulic material such as cement or gypsum to extrude a molded body, and the molded body is cured by curing to be lightweight. It is widely known to manufacture building materials. However, the foamed particles mixed in the hydraulic material have a disadvantage that the surface of the molded body is not smooth due to the springback phenomenon immediately after extrusion molding due to the springback phenomenon. It was Therefore, the surface of the molded body has been smoothed by grinding the foamed particles that have risen up (see, for example, JP-A-5959).
-127709 gazette).
（発明が解決しようとする課題） しかし、研削によって成形体の表面を平滑化する場合、
研削を行うグラインダーによって表面の荒さが左右さ
れ、成形体の表面に研削疵ができるという不都合が生じ
ていた。また、研削後、成形ローラーによって表面を修
正するにしても、研削クズによって成形体の表面の平滑
化が阻害されるという問題があった。(Problems to be solved by the invention) However, when the surface of the molded body is smoothed by grinding,
The roughness of the surface is influenced by the grinder that grinds, which causes a problem that a grinding flaw is formed on the surface of the molded body. Further, even if the surface is corrected by a molding roller after grinding, there is a problem that the surface of the molded body is hindered by the grinding scraps.
本発明は、係る実情に鑑みてなされたものであって、成
形体の表面に発泡粒子を混入していない水硬性材料によ
って成形シートを被覆することによって表面が平滑な軽
量建材を製造することを目的としている。The present invention has been made in view of such circumstances, the surface of the molded article is manufactured by coating a molded sheet with a hydraulic material containing no foamed particles to produce a lightweight construction material having a smooth surface. Has an aim.
（課題を解決するための手段） 本発明の軽量建材の製造方法は、熱可塑性プラスチック
発泡粒子を混入した水硬性材料よりなる成形体を第１押
出機の成形金型から押出成形した後、成形体の表面に、
熱可塑性プラスチック発泡粒子を混入していない水硬性
材料よりなる成形シートを第２押出機の成形金型から押
出して、成形体の表面を被覆した後、成形体および成形
シートを養成硬化して軽量建材を製造するものである。(Means for Solving the Problems) A method for manufacturing a lightweight building material of the present invention is a method in which a molded body made of a hydraulic material mixed with thermoplastic expanded foam particles is extruded from a molding die of a first extruder and then molded. On the surface of the body,
A molded sheet made of a hydraulic material that does not contain expanded thermoplastic particles is extruded from the molding die of the second extruder to cover the surface of the molded body, and then the molded body and molded sheet are cured by curing to reduce the weight. It manufactures building materials.
（作用） 第１押出機の成形金型から、発泡粒子を混入した水硬性
材料を押出して成形体を成形する。すると、成形直後、
成形体の表面には、スプリングバック現象によって発泡
粒子が浮出してくる。そこで、この第１押出機による成
形直後に、成形体の表面に第２押出機の成形金型から、
発泡粒子を混入していない水硬性材料によって成形シー
トを押出して、該成形体の表面を被覆する。すると、こ
の成形シートによって、浮出した発泡粒子が被覆され、
成形体の表面が平滑化される。この成形体および成形シ
ートを養生硬化することによって、表面が平滑化された
軽量建材が製造される。(Operation) From the molding die of the first extruder, the hydraulic material mixed with the foamed particles is extruded to form a molded body. Then, immediately after molding,
Foamed particles float on the surface of the molded body due to the springback phenomenon. Then, immediately after the molding by the first extruder, from the molding die of the second extruder to the surface of the molded body,
A molded sheet is extruded with a hydraulic material containing no expanded particles to coat the surface of the molded body. Then, this molded sheet covers the foamed foam particles,
The surface of the molded body is smoothed. By curing and curing the molded body and the molded sheet, a lightweight building material with a smooth surface is manufactured.
（実施例） 以下、本発明の実施例を図面を参照して説明する。(Example) Hereinafter, the Example of this invention is described with reference to drawings.
第１図は、軽量建材の製造に使用する成形装置の全体構
成の概略を示している。FIG. 1 shows an outline of the overall configuration of a molding apparatus used for manufacturing a lightweight building material.
同図において、１は熱可塑性プラスチック発泡粒子2aを
混入した基材用水硬性材料２を成形金型５から押出す第
１押出機、４は熱可塑性プラスチック発泡粒子2aを混入
していない表層用水硬性材料３を成形金型６から押出す
第２押出機、７はトレー８を搬送するロールコンベアで
ある。In the figure, 1 is a first extruder for extruding a hydraulic material 2 for a base material mixed with thermoplastic foamed particles 2a from a molding die 5 and 4 is a surface layer hydraulic material containing no thermoplastic foamed particles 2a. A second extruder for extruding the material 3 from the molding die 6, and a roll conveyor 7 for conveying the tray 8.
しかして、第１押出機１から押出した基材用水硬性材料
２の成形体９は、ロールコンベア７上を搬送するように
載置したトレー８上に移載する。このトレー８上に移載
した状態で、成形体９中の発泡粒子2aがスプリングバッ
ク現象によって、成形体９の表面に浮出してくる。そこ
で、この成形体９の表面が乾燥しない内に、搬送方向前
方に設けた第２押出機４によって、この成形体９の表面
に表層用水硬性材料３の成形シート10を被覆する。その
後、この成形体９および成形シート10を直ちにローラー
加圧することで、表面が平滑化された生板建材11が成形
される。このようにして成型された生板建材11は、第２
図に示すように、トレー８ごと積載して養生硬化させ
る。また、この工程の後に二次養生が必要な場合は、ト
レー８から製品を脱板して二次養生を行う。そして、ト
レー８の形状を変えることによって、第３図に示すよう
な住宅用外壁コーナー材や、第４図に示すような板材を
製造することができる。Then, the molded body 9 of the hydraulic material for base material 2 extruded from the first extruder 1 is transferred onto the tray 8 placed so as to be conveyed on the roll conveyor 7. The foamed particles 2a in the molded body 9 are lifted to the surface of the molded body 9 by the springback phenomenon while being transferred onto the tray 8. Therefore, while the surface of the molded body 9 is not dried, the surface of this molded body 9 is covered with the molded sheet 10 of the hydraulic material 3 for the surface layer by the second extruder 4 provided at the front in the conveying direction. Then, the green body 11 having the smoothed surface is molded by immediately pressing the molded body 9 and the molded sheet 10 with a roller. The green board building material 11 molded in this way is the second
As shown in the figure, the tray 8 is loaded and cured by curing. If secondary curing is required after this step, the product is removed from the tray 8 to perform secondary curing. Then, by changing the shape of the tray 8, a house outer wall corner material as shown in FIG. 3 and a plate material as shown in FIG. 4 can be manufactured.
なお、熱可塑性プラスチック発泡粒子2aとしては、球形
で粒子径が0.01〜3mmで発泡倍率が10倍〜50倍で耐アル
カリ性の発泡粒子が使用され、特に発泡ポリスチレン、
発泡ポリ塩化ビニリデン等が好適である。As the thermoplastic expanded beads 2a, spherical particles having a particle diameter of 0.01 to 3 mm and an expansion ratio of 10 to 50 times and alkali-resistant expanded particles are used, in particular expanded polystyrene,
Foamed polyvinylidene chloride and the like are suitable.
次に、この製造方法の具体例について説明する。Next, a specific example of this manufacturing method will be described.
〔第１具体例〕 基材用水硬性材料の組成として、表１に示す材料を用意
し、水以外の各材料をミキサー（アイリッヒミキサーRO
8型：日本アイリッヒ社製）に入れて1000rpmで２分間ド
ライブレンドする。その後、これに水を加えて、さらに
１分間混合した後、オーガー式混練機（MP−100型：宮
崎鉄工社製）で押出して、十分に混練された基材用可塑
性混練物を調整する。[First Specific Example] As the composition of the hydraulic material for the base material, the materials shown in Table 1 were prepared, and each material other than water was mixed with a mixer (Eirich mixer RO.
Type 8: manufactured by Japan Erich Co., Ltd.) and dry blend at 1000 rpm for 2 minutes. Thereafter, water is added to this, and the mixture is further mixed for 1 minute, and then extruded by an auger type kneader (MP-100 type: manufactured by Miyazaki Tekko Co., Ltd.) to prepare a sufficiently kneaded plastic kneaded material for a substrate.
次に、表１に示す材料より発泡スチレンビーズを除く各
材料を表層用水硬性材料の組成として、上記と同様の操
作を行い表層用可塑性混練物を調整する。Next, each material excluding expanded styrene beads from the materials shown in Table 1 is used as the composition of the hydraulic material for the surface layer, and the same procedure as above is performed to prepare the plastic kneaded material for the surface layer.
そして、基材用可塑性混練物を、Ｌ型試作用金型（開口
部暑さ13mm）が取付けられた第１真空押出成型機（HT−
250型：三上工業製）のホッパーに入れ、引取機の上に
搬送可能に載置したＬ型トレー上に押出成形してＬ型の
成形体を形成する。次に、表層用可塑性混練物を、Ｌ型
試作用金型（開口部厚さ2mm）が取付けられた第２真空
押出成形機（MV−FM−Ａ−１型：宮崎鉄工社製）のホッ
パーに入れ、前記Ｌ型の成形体の表面に表層用水硬性材
料の成形シートを被覆する。その後、この成形体および
成形シートを直ちにローラー加圧することで、表面が平
滑化された生板建材が成型される。このようにして成型
された生板建材は、トレーと共に積み重ねて、室内で約
２時間放置（前置き）後、40℃RH95％の雰囲気で12時間
養生して軽量建材となる。Then, the plastic kneaded material for the base material was used as a first vacuum extrusion molding machine (HT-
250 type: manufactured by Mikami Kogyo Co., Ltd.), and extrusion-molded on an L-shaped tray movably placed on a take-up machine to form an L-shaped molded body. Next, the plastic kneaded material for the surface layer was hopper of a second vacuum extrusion molding machine (MV-FM-A-1 type: manufactured by Miyazaki Tekko Co., Ltd.) to which an L-type trial mold (opening thickness 2 mm) was attached. Then, the surface of the L-shaped molded body is covered with a molded sheet of a hydraulic material for the surface layer. Then, by pressing the formed body and the formed sheet with a roller, a green board building material having a smooth surface is formed. The green board building materials molded in this way are stacked with trays, left indoors (preliminary) for about 2 hours, and then cured for 12 hours in an atmosphere of 40 ° C RH95% to become lightweight building materials.
このようにして得られた軽量建材の表面は平滑であっ
た。また、この成形体の比重は1.5、曲げ強度は120kg/c
m2であった。The surface of the lightweight building material thus obtained was smooth. Also, the specific gravity of this molded body is 1.5, and the bending strength is 120 kg / c.
It was m 2 .
〔第２具体例〕 基体用可塑性混練物として、表１に示すものと同様のも
のを調整する。一方、表層用可塑性混練物として、表１
に示す組成のものから発泡スチレンビーズを取り除き、
その代替に無機軽量材のシラスバルーンを５重量部配合
したものを調整する。以下、上記第１具体例と同様の操
作を行い軽量建材を得た。[Second Specific Example] As the plastic kneaded product for a substrate, the same one as shown in Table 1 is prepared. On the other hand, as a plastic kneaded material for the surface layer, Table 1
Remove the expanded styrene beads from the composition shown in
Instead, 5 parts by weight of an inorganic lightweight material, Shirasu balloon, is prepared. Hereinafter, the same operation as in the first specific example was performed to obtain a lightweight building material.
このようにして得られた軽量建材の表面は平滑であっ
た。また、この成形体の比重は1.4、曲げ強度は115kg/c
m2であった。The surface of the lightweight building material thus obtained was smooth. The specific gravity of this molded body is 1.4, and the bending strength is 115 kg / c.
It was m 2 .
（発明の効果） 以上述べたように、本発明によると、成形体の表面に浮
出した熱可塑性プラスチック発泡粒子を成形シートによ
って被覆し、成形品の表面を平滑化することができるの
で、表面が生活で耐衝撃性と釘保持力にすぐれた軽量建
材を製造することができる。(Effects of the Invention) As described above, according to the present invention, the surface of a molded article can be smoothed by covering the foamed thermoplastic plastic particles on the surface of the molded article with the molded sheet. It is possible to manufacture lightweight construction materials with excellent impact resistance and nail holding power in daily life.
第１図ないし第４図は本発明の図面を示し、第１図は軽
量建材の製造に使用する成形装置の全体構成の概略を示
す側面図、第２図はトレーに移載した生板建材をトレー
ごと積載した状態を示す斜視図、第３図は本発明によっ
て製造した住宅用外壁コーナー材を示す斜視図、第４図
は同板材を示す斜視図である。 １…第１押出機 2a…熱可塑性プラスチック発泡粒子 2,3…水硬性材料 ４…第２押出機 5,6…成形金型 ９…成形体 10…成形シート1 to 4 show the drawings of the present invention, FIG. 1 is a side view showing the outline of the overall constitution of a molding apparatus used for manufacturing a lightweight building material, and FIG. 2 is a raw board building material transferred to a tray. FIG. 3 is a perspective view showing a state in which the trays are stacked together, FIG. 3 is a perspective view showing a house outer wall corner material manufactured by the present invention, and FIG. 4 is a perspective view showing the same plate material. DESCRIPTION OF SYMBOLS 1 ... 1st extruder 2a ... Thermoplastic foam particles 2,3 ... Hydraulic material 4 ... 2nd extruder 5,6 ... Mold 9 ... Mold 10 ... Mold sheet
Claims (1)
水硬性材料よりなる成形体を第１押出機の成形金型から
押出成形した後、成形体の表面に、熱可塑性プラスチッ
ク発泡粒子を混入していない水硬性材料よりなる成形シ
ートを第２押出機の成形金型から押出して、成形体の表
面を被覆した後、成形体および成形シートを養生硬化し
て軽量建材を製造することを特徴とする軽量建材の製造
方法。1. A molded body made of a hydraulic material containing thermoplastic expanded foam particles is extruded from a molding die of a first extruder, and then the thermoplastic expanded foam particles are mixed on the surface of the molded body. Characterized in that a molded sheet made of a non-hydraulic material is extruded from a molding die of a second extruder to cover the surface of the molded body, and then the molded body and the molded sheet are cured and cured to produce a lightweight building material. Manufacturing method of lightweight building materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP413889A JPH0791129B2 (en) | 1989-01-11 | 1989-01-11 | Manufacturing method for lightweight building materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP413889A JPH0791129B2 (en) | 1989-01-11 | 1989-01-11 | Manufacturing method for lightweight building materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02184582A JPH02184582A (en) | 1990-07-19 |
| JPH0791129B2 true JPH0791129B2 (en) | 1995-10-04 |
Family
ID=11576418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP413889A Expired - Lifetime JPH0791129B2 (en) | 1989-01-11 | 1989-01-11 | Manufacturing method for lightweight building materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791129B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2299536A (en) * | 1995-04-07 | 1996-10-09 | Arnold Guettler | Forming building products by continuously moulding about a travelling soft polymer core |
-
1989
- 1989-01-11 JP JP413889A patent/JPH0791129B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02184582A (en) | 1990-07-19 |
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