JP2002070239A - Gypsum building material suitable for bearing wall - Google Patents
Gypsum building material suitable for bearing wallInfo
- Publication number
- JP2002070239A JP2002070239A JP2000256244A JP2000256244A JP2002070239A JP 2002070239 A JP2002070239 A JP 2002070239A JP 2000256244 A JP2000256244 A JP 2000256244A JP 2000256244 A JP2000256244 A JP 2000256244A JP 2002070239 A JP2002070239 A JP 2002070239A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- building material
- based building
- bearing wall
- load
- 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
Links
Landscapes
- Panels For Use In Building Construction (AREA)
- Laminated Bodies (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建築物の壁面に用
いられる内装用の面材に関し、詳しくは、内装用の面材
としての強度、特に面内剪断剛性（以下、面内強度とい
う）を向上させた耐力壁に適する石膏系建材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior surface material used for a wall surface of a building, and more particularly, to strength as an interior surface material, particularly in-plane shear rigidity (hereinafter referred to as in-plane strength). The present invention relates to a gypsum-based building material suitable for a load-bearing wall having an improved resistance.
【０００２】[0002]
【従来の技術】我が国は、山岳地帯が大半を占め平野部
が少なく、政治・経済・交通手段等における利便性か
ら、建築物は平野部に集中している。また、我が国は、
世界でも有数の地震国であるが、建築物の耐震構造や工
法等の開発が進められ、オフィスやホテル等の建築物は
それぞれ高層化されている。2. Description of the Related Art In Japan, mountainous areas occupy the majority and plains are few, and buildings are concentrated in plains because of their convenience in politics, economy, transportation, and the like. In addition, Japan
Although it is one of the most earthquake-prone countries in the world, the development of seismic structures and construction methods of buildings has been promoted, and buildings such as offices and hotels have each been raised in height.
【０００３】また、戸建て住宅においても、近年では、
建設省から木造３階建てが認められ、特に、都市部にお
いて、木造３階建て住宅が急激に増加する傾向にある。
この木造３階建ての住宅においては、該住宅の耐震性を
向上させる手段として、住宅を構成する壁を耐力壁にす
ることが図られており、これに適する内装用の面材の開
発が進められている。また、この耐震性の内装用面材の
開発においては、平成７年の阪神淡路大震災を経験して
以来、特に、防耐火性を伴うことの重要性が再認識さ
れ、木造３階建て住宅にあっては、耐震性と防耐火性に
対する要求がますます高まる一方であり、その面材の開
発は人々の関心の的になっている。尚、耐力壁の強度を
向上させる内装用の面材は、木造３階建て住宅への使用
に限らず、高層建築物においても、その使用は、耐震構
造上、有用であることは勿論である。In detached houses, in recent years,
The Ministry of Construction has approved three-story wooden buildings. Particularly in urban areas, the number of three-story wooden houses tends to increase rapidly.
In this three-story wooden house, as a means of improving the seismic resistance of the house, the walls constituting the house are designed to be load-bearing walls, and the development of interior facing materials suitable for this is being promoted. Have been. In the development of earthquake-resistant interior facing materials, the importance of having fire resistance has been re-recognized since the 1995 Great Hanshin-Awaji Earthquake. At the same time, the demand for seismic resistance and fire resistance is increasing, and the development of the facing materials is of interest to people. In addition, the surface material for the interior which improves the strength of the load-bearing wall is not limited to use in a wooden three-story house, but also in a high-rise building, its use is, of course, useful in an earthquake-resistant structure. .
【０００４】一方、石膏系建材、特に石膏ボードは、防
耐火性に優れた建材であることがよく知られており、さ
らに、石膏ボードは、他の性状として、寸法安定性、施
工性、経済性及び居住性等の優れた性能を合わせ持つの
で、建築物の内装用面材として、一般住宅やオフィス等
のビルの内装下地材として広く使われている。また、石
膏ボードの内装用の面材としての強度は、耐力壁に使用
する面材としての強度を表す壁倍率が、木造住宅の枠組
み工法では「１．５」、軸組工法では「１．０」と、建
設省からそれぞれ認定されている。On the other hand, gypsum-based building materials, especially gypsum boards, are well known to be excellent in fire resistance, and gypsum boards have other properties such as dimensional stability, workability, and economy. Since it has excellent properties such as ease of use and livability, it is widely used as a surface material for building interiors and as a base material for interiors of buildings such as ordinary houses and offices. As for the strength of the gypsum board as an interior face material, the wall magnification representing the strength as a face material used for a load-bearing wall is "1.5" in the frame method of a wooden house, and "1. 0 ", respectively, has been certified by the Ministry of Construction.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、より大
きな強度を必要とする木造３階建て住宅等では、石膏ボ
ードに認定された前記の壁倍率（面材の面内強度が大き
いほど大）では不足で、さらなる大きな壁倍率、すなわ
ち、大きな面内強度を有する石膏系建材が求められてい
る。また、一般に、石膏系建材は表面硬度が低く、これ
を使用した壁面は物等が当って傷がつき易いといった欠
点があった。However, in a wooden three-story house or the like that requires a greater strength, the wall magnification (the greater the in-plane strength of the surface material is larger), the wall magnification, is insufficient. Therefore, there is a demand for a gypsum-based building material having a higher wall magnification, that is, a higher in-plane strength. Further, in general, gypsum-based building materials have a low surface hardness, and the wall surface using the same has a disadvantage that it is easily damaged by an object or the like.
【０００６】その点、従来から使用されている建材の一
つに、構造用合板がある。この構造用合板は、石膏系建
材と比べ、強度的な面では耐力壁に適した面材ではある
が、防耐火性に劣るという致命的な欠陥を有し、これと
共に、この構造用合板には、製造に使用される接着剤に
起因する目の痛みや頭痛を誘発する揮発性物質が存在
し、住環境上、問題になっている。In this regard, one of the building materials conventionally used is a plywood for structure. Although this structural plywood is a surface material suitable for load-bearing walls in terms of strength compared to gypsum-based building materials, it has a fatal defect of inferior fire resistance and, along with this, There are volatile substances that cause eye pain and headache caused by the adhesive used in the production, which is a problem in the living environment.
【０００７】また、石膏系を除く他の無機質系建材にお
いても、耐力壁を構成する面材として開発され市販され
ているものがないことはないが（例えば、ダイライ
ト）、面材の価格や多額の内装仕上げ費用を要するとい
う問題があり、市場の要求に充分に応えているとは言い
難いのが現状である。[0007] In addition, there is no shortage of other inorganic building materials other than gypsum-based building materials that have been developed and marketed as face materials constituting load-bearing walls (for example, dielite). However, there is a problem that the interior finishing cost is required, and it is difficult to say that it sufficiently meets the demands of the market.
【０００８】したがって、本発明の目的は、石膏系建材
が有する、防耐火性、施工性、寸法安定性、経済性及び
居住性等の優れた性能を保持しつつ、有害な揮発性物質
を発生させることなく、耐力壁用の面材としての面内強
度を向上させた石膏系建材、特に、表面硬度を高めた内
装用の石膏系建材を提供することである。Accordingly, an object of the present invention is to generate harmful volatile substances while maintaining excellent properties such as fire resistance, workability, dimensional stability, economy and habitability of gypsum-based building materials. It is an object of the present invention to provide a gypsum-based building material having improved in-plane strength as a surface material for a load-bearing wall, particularly a gypsum-based building material for interiors having a high surface hardness.
【０００９】[0009]
【課題を解決するための手段】上記目的は以下の本発明
によって達成される。すなわち、本発明は、形状が板状
体を成す芯材が、石膏を主体とし、該石膏にガラス繊維
と澱粉とが配合されて形成されていることを特徴とする
耐力壁に適する石膏系建材（Ａ）を提供する。The above object is achieved by the present invention described below. That is, the present invention provides a gypsum-based building material suitable for a load-bearing wall, wherein the core material having a plate-like shape is mainly gypsum, and the gypsum is formed by mixing glass fiber and starch. (A) is provided.
【００１０】また、本発明は、形状が板状体を成す芯材
が、石膏を主体とし、該石膏にガラス繊維と澱粉とが配
合されて形成され、且つ該芯材の表裏面に石膏ボード用
原紙またはガラス繊維製部材が接着されていることを特
徴とする耐力壁に適する石膏系建材（Ｂ）を提供する。[0010] The present invention also relates to a gypsum core material having a plate-like shape, wherein the gypsum is mainly composed of gypsum, and glass fiber and starch are blended with the gypsum. A gypsum-based building material (B) suitable for a load-bearing wall, characterized in that a base paper or a glass fiber member is adhered.
【００１１】さらに、本発明は、形状が板状体を成す芯
材が、石膏を主体とし、該石膏にガラス繊維と澱粉とが
配合されて形成され、且つ該芯材の表裏面下の少なくと
も一方にガラス繊維製部材が埋設されていることを特徴
とする耐力壁に適する石膏系建材（Ｃ）を提供する。[0011] Further, the present invention provides that the core material having a plate-like shape is mainly composed of gypsum, and the gypsum is formed by blending glass fiber and starch, and at least the lower and upper surfaces of the core material are formed below the core material. On the other hand, there is provided a gypsum-based building material (C) suitable for a load-bearing wall, in which a glass fiber member is embedded.
【００１２】[0012]
【発明の実施の形態】次に実施の形態を挙げて本発明を
さらに詳細に説明する。上記第１発明の耐力壁に適する
石膏系建材Ａは、図１にその横断を図解的に示すよう
に、形状が板状体を成す芯材１が、石膏を主体とし、該
石膏にガラス繊維と澱粉とが配合されて形成されてい
る。また、第２発明の耐力壁に適する石膏系建材Ｂは、
図２にその横断を図解的に示すように、形状が板状体を
成す芯材１が、石膏を主体とし、該石膏にガラス繊維と
澱粉とが配合されて形成され、且つ該芯材１の表裏面に
石膏ボード用原紙２またはガラス繊維製部材（図示され
ていない）が接着されている。尚、ガラス繊維製部材と
はガラス繊維を織った布状のもの及びネット状のガラス
繊維不織布等を云う。さらに、第３発明の耐力壁に適す
る石膏系建材Ｃは、図３にその横断の一部を図解的に示
すように、形状が板状体を成す芯材１が、石膏を主体と
し、該石膏にガラス繊維と澱粉とが配合されて形成さ
れ、且つ該芯材１の表裏面下の少なくとも一方（図では
芯材１の表裏面下のそれぞれ）に、ガラス繊維製部材
２’が埋設されている。BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in more detail with reference to embodiments. The gypsum-based building material A suitable for the load-bearing wall of the first invention is, as shown schematically in FIG. 1, a cross-section of the gypsum-based core material 1 mainly composed of gypsum. And starch are compounded. Further, the gypsum-based building material B suitable for the load-bearing wall of the second invention is:
As shown schematically in FIG. 2, the cross section of the core material 1 has a plate-like shape, and is mainly made of gypsum. The gypsum is formed by mixing glass fiber and starch. A gypsum board base paper 2 or a glass fiber member (not shown) is adhered to the front and back surfaces of. Note that the glass fiber member refers to a cloth-like material woven of glass fibers, a net-like glass fiber nonwoven fabric, or the like. Further, the gypsum-based building material C suitable for the load-bearing wall of the third invention is, as illustrated schematically in FIG. A glass fiber member 2 ′ is embedded in at least one of the lower and upper surfaces of the core material 1 (each under the upper and lower surfaces of the core material 1 in the figure). ing.
【００１３】上記の石膏系建材Ａとは、芯材１が上記配
合で形成された板状体の表裏面に、石膏ボード用原紙や
ガラス繊維製部材等を積層しない、または芯材中に埋設
しない単なる石膏板を云い、その比重は０．６〜１．
３、好ましくは０．８〜１．１である。The above-mentioned gypsum-based building material A is such that a base paper for a gypsum board, a member made of glass fiber, or the like is not laminated on the front and back surfaces of a plate-like body in which the core material 1 is formed by the above-mentioned composition, or embedded in the core material. Not a simple gypsum board, whose specific gravity is 0.6-1.
3, preferably 0.8 to 1.1.
【００１４】また、上記の石膏系建材Ｂとは、両面石膏
ボード用原紙張繊維混入硬質石膏板及びガラス繊維製部
材積層石膏板等を云い、（１）両面石膏ボード用原紙張
繊維混入硬質石膏板は、芯材１が上記の配合で形成され
た板状体の表裏面に石膏ボード用原紙２が接着した構造
を成し、その比重は０．６〜１．３、好ましくは０．８
〜１．１であり、（２）ガラス繊維製部材積層石膏板
は、芯材１が上記の配合で形成された板状体の表裏面に
ガラス繊維製部材が接着した構造を成し、その比重は
０．６〜１．３、好ましくは０．８〜１．１である。The above-mentioned gypsum-based building material B refers to a hard gypsum board mixed with base paper-stretched fiber for double-sided gypsum board, a laminated gypsum board mixed with glass fiber members, and the like. The board has a structure in which a gypsum board base paper 2 is adhered to the front and back surfaces of a plate-like body in which a core material 1 is formed by the above-described composition, and has a specific gravity of 0.6 to 1.3, preferably 0.8.
(2) The laminated gypsum board made of glass fiber members has a structure in which the glass fiber members are adhered to the front and back surfaces of the plate-like body in which the core material 1 is formed by the above composition. The specific gravity is 0.6 to 1.3, preferably 0.8 to 1.1.
【００１５】また、石膏系建材Ｃとは、形状が板状体を
成す芯材１が上記の配合で形成され、この芯材の表裏面
下の少なくとも一方（図では両方）にガラス繊維製部材
２’が埋設された構造の、いわゆるガラス繊維製部材入
り石膏板を云い、その比重は０．６〜１．３であり、好
ましくは０．８〜１．１である。そして、そのガラス繊
維製部材の埋設位置は特に限定されないが、表層の石膏
層の厚みが少なくとも約０．５ｍｍになるように埋設す
ると、石膏系建材Ｃの表面は石膏層で覆われた美麗なも
のとなる。Further, the gypsum-based building material C is such that a core material 1 having a plate-like shape is formed by the above-mentioned composition, and at least one (both in the figure) of the core material is formed of a glass fiber member. This is a so-called gypsum board containing a glass fiber member having a structure in which 2 ′ is embedded, and its specific gravity is 0.6 to 1.3, and preferably 0.8 to 1.1. And the embedding position of the glass fiber member is not particularly limited, but when embedding so that the thickness of the surface gypsum layer is at least about 0.5 mm, the surface of the gypsum-based building material C is beautifully covered with the gypsum layer. It will be.
【００１６】尚、上記石膏系建材Ａ、Ｂ及びＣのそれぞ
れの比重は、各面材の面内強度を向上させるうえで、上
記記載のそれぞれの範囲内に納めることが肝要である。It is important that the specific gravities of the gypsum-based building materials A, B and C fall within the respective ranges described above in order to improve the in-plane strength of each face material.
【００１７】また、上記石膏系建材Ａ、Ｂ及びＣの各製
造は、石膏系建材Ｂにおいては、公知の石膏ボード製造
用の設備を用いて行うことができ、石膏系建材Ｂは、そ
れぞれ配合される上記物質（ただし、石膏にあっては焼
石膏を使用する）に、水を添加し混合して得られる石膏
スラリーを、上下の前記石膏ボード用原紙２またはガラ
ス繊維製部材の間に流し込み、上下にロールを配した成
型機で所定の厚さと幅の板状に連続成形して搬送し、硬
化後に粗切断し、次いで、乾燥工程に導き乾燥後に製品
寸法に切断して得られる。その点、芯材のみでなる石膏
系建材Ａとガラス繊維製部材入り石膏板の石膏系建材Ｃ
の各製造は、成型機を石膏系建材Ｂの製造における成型
機と異にするが、他は石膏系建材Ｂの製造と同様であ
る。それに使用する成型機として、特公昭６３−６５４
８２号公報に開示された上下に配した成型ベルトを用い
る設備を例示できる。Each of the gypsum-based building materials A, B, and C can be manufactured by using a known gypsum board manufacturing facility for the gypsum-based building material B. Gypsum slurry obtained by adding and mixing water to the above-mentioned substance (however, calcined gypsum is used in the case of gypsum) is poured between upper and lower base paper 2 for gypsum board or glass fiber member. It is continuously formed into a plate having a predetermined thickness and width by a molding machine having upper and lower rolls, conveyed, cured, roughly cut, then guided to a drying step, and dried to be cut into product dimensions. In this regard, a gypsum-based building material A consisting only of a core material and a gypsum-based building material C of a gypsum board containing glass fiber members
Is different from the molding machine in the production of the gypsum-based building material B, but the others are the same as the production of the gypsum-based building material B. As a molding machine used for this, Japanese Patent Publication No. 63-654
An example of the equipment disclosed in Japanese Patent Publication No. 82 using the vertically arranged molding belts can be exemplified.
【００１８】さらに、上記石膏系建材Ａ、Ｂ及びＣのそ
れぞれの軽量化を図るために、公知の泡剤や発泡させた
シラスバルーン及びパーライト等の軽量骨材を適宜必要
に応じて配合させることができる。Further, in order to reduce the weight of each of the gypsum-based building materials A, B and C, a known foaming agent or a lightweight aggregate such as a foamed shirasu balloon or perlite is appropriately blended as necessary. Can be.
【００１９】また、上記石膏系建材Ａ、Ｂ及びＣの強度
を補強するために、古紙やその他のパルプ繊維を配合さ
せることや、他の性状を向上させるために行う配合は公
知の石膏ボードと同様に手当てすることができる。Further, in order to reinforce the strength of the gypsum-based building materials A, B and C, it is possible to mix used paper and other pulp fibers and to mix other known properties with gypsum board. The same can be provided.
【００２０】また、上記それぞれ配合されるガラス繊維
は、石膏系建材の面内強度を向上させ、その配合量は、
石膏１００重量部当りあたり０．３〜５重量部であり、
好ましくは０．５〜３重量部である。尚、０．３重量部
未満では石膏系建材の面内強度の向上は少なく、５重量
部を越えると、芯材中におけるガラス繊維の分散状態が
悪くなるばかりでなく、焼石膏等との混練中に、トラブ
ルが発生し連続して石膏系建材を生産することができな
くなるからである。そして、石膏系建材の面内強度を好
ましく向上させ、且つ連続して生産するためには、配合
されるガラス繊維の形状は、径が５〜２５μｍ、長さが
１／８〜２インチであり、好ましくは、径が７〜１３μ
ｍ、長さが１／８〜１インチである。尚、ガラス繊維の
分散性をよくするために、予め該繊維の表面を焼石膏で
覆っておくことができる。Further, the glass fibers to be blended each above improve the in-plane strength of the gypsum-based building material.
0.3 to 5 parts by weight per 100 parts by weight of gypsum,
Preferably it is 0.5 to 3 parts by weight. If the amount is less than 0.3 parts by weight, the in-plane strength of the gypsum-based building material is not improved. If the amount exceeds 5 parts by weight, not only the dispersion state of the glass fibers in the core material is deteriorated, but also kneading with the plaster of Paris. This is because troubles occur during the process and it becomes impossible to continuously produce gypsum-based building materials. And, in order to preferably improve the in-plane strength of the gypsum-based building material and to continuously produce the same, the shape of the glass fiber to be compounded is 5 to 25 μm in diameter and 1/8 to 2 inches in length. , Preferably with a diameter of 7 to 13 μm
m, length is 1/8 to 1 inch. In order to improve the dispersibility of the glass fiber, the surface of the fiber may be covered with plaster of Paris in advance.
【００２１】さらに、上記配合される澱粉は、石膏系建
材Ａ、Ｂ及びＣのそれぞれの面内強度が向上するのを助
長するばかりでなく、ガラス繊維の存在によるその働き
と相まって、石膏系建材の面内強度をさらに向上させ
る。その澱粉の配合量は、石膏１００重量部当り、０．
３〜５重量部であり、好ましくは０．５〜３重量部であ
る。そして、配合する澱粉の種類は特に限定されず、ま
た、その酸処理（澱粉のα化）の有無を問わず使用でき
るが、エーテル化澱粉を使用することが、面内強度を向
上させる上で好都合である。尚、相乗効果が得られる好
適な澱粉とガラス繊維の配合比は約１：１（重量比）で
ある。Furthermore, the starch blended not only helps to improve the in-plane strength of each of the gypsum-based building materials A, B, and C, but also combines with the action of the gypsum-based building materials, Further improves the in-plane strength. The amount of the starch was 0.1 to 100 parts by weight of gypsum.
It is 3 to 5 parts by weight, preferably 0.5 to 3 parts by weight. The type of starch to be blended is not particularly limited, and it can be used with or without acid treatment (gelatinization of starch). The use of etherified starch improves the in-plane strength. It is convenient. The preferred mixing ratio of starch and glass fiber for obtaining a synergistic effect is about 1: 1 (weight ratio).
【００２２】また、石膏系建材Ａ、Ｂ及びＣのそれぞれ
の表面硬度を向上させるために、公知の酢酸ビニル系樹
脂を配合できる。その配合量は、石膏１００重量部当り
０．１〜５重量部であり、好ましくは０．３〜２重量部
である。尚、０．１重量部未満では効果がなく、５重量
部を越えると経済的でないからである。In order to improve the surface hardness of each of the gypsum-based building materials A, B, and C, a known vinyl acetate-based resin can be blended. The amount is 0.1 to 5 parts by weight, preferably 0.3 to 2 parts by weight, per 100 parts by weight of gypsum. If the amount is less than 0.1 part by weight, there is no effect, and if it exceeds 5 parts by weight, it is not economical.
【００２３】また、石膏系建材Ａ、Ｂ及びＣのそれぞれ
の防水性を向上させるために、パラフィン系またはシリ
コン系等の公知の防水剤を使用できる。その配合量は、
石膏１００重量部当り０．１〜５重量部であり、好まし
くは０．３〜３．５重量部である。特に防水剤が配合さ
れた石膏系建材Ａ、Ｂ及びＣは、台所、洗面所及び風呂
場等の水回りの耐力壁を構成する面材として使用する
と、該石膏系建材がはっ水性を発揮するので、吸湿によ
る面内強度が低下せず、特に、水回り用の好適な材料と
なる。In order to improve the waterproofness of each of the gypsum-based building materials A, B and C, a known waterproofing agent such as a paraffinic or silicone-based material can be used. The amount is
It is 0.1 to 5 parts by weight, preferably 0.3 to 3.5 parts by weight, per 100 parts by weight of gypsum. In particular, when the gypsum-based building materials A, B, and C containing a waterproofing agent are used as surface materials constituting a load-bearing wall around water in kitchens, toilets, and bathrooms, the gypsum-based building materials exhibit water repellency. As a result, the in-plane strength does not decrease due to moisture absorption, and the material is particularly suitable for use around water.
【００２４】[0024]
【実施例】次に実施例を挙げて本発明をさらに具体的に
説明する。 Ｉ．石膏系建材Ｂの石膏ボードについて、 （例１〜６）常用されている石膏ボードの製造設備を用
い、図２に示される石膏ボードＢを構成する芯材１が、
下記の表１に示される配合になるように、焼石膏に、径
及び長さのそれぞれが９μｍ及び１／４インチである日
本電気硝子社製のガラス繊維（商品名Ｅ−ＣＨＯＰ）及
び日本コーンスターチ社製の澱粉（商品名ナガラＢ）を
添加し水と混合して石膏スラリーを得、米坪２２０ｇ／
ｍ2の石膏ボード用原紙２を用いて、常法により、厚さ
１２．５ｍｍ、幅９１０ｍｍ及び長さ１８２０ｍｍの比
重が１である６種類の石膏ボードＢを得た。尚、例６が
本発明に相当し、他は比較例である。Next, the present invention will be described more specifically with reference to examples. I. About the gypsum board of the gypsum-based building material B, (Examples 1-6) The core material 1 which comprises the gypsum board B shown in FIG.
Glass fiber (trade name: E-CHOP) manufactured by Nippon Electric Glass Co., Ltd. having a diameter and a length of 9 μm and a length of 1/4 inch, respectively, and corn starch were added to the calcined gypsum so as to have the composition shown in Table 1 below. A starch (trade name: Nagara B) manufactured by the company was added and mixed with water to obtain a gypsum slurry.
Using gypsum board base paper 2 of m 2 , six types of gypsum boards B having a specific gravity of 1 and a thickness of 12.5 mm, a width of 910 mm and a length of 1820 mm were obtained by a conventional method. Example 6 corresponds to the present invention, and the others are comparative examples.
【００２５】表１ 石膏１００重量部当りの各配合量 Table 1 Amounts of each composition per 100 parts by weight of gypsum
【００２６】II．石膏系建材Ｃのガラス繊維製部材入り
石膏板について、 （例７〜１３）常用されている石膏ボードの製造設備に
おける成型機の代わりに、前記特公昭６３−６５４８２
号公報に開示された上下に配した成型ベルトを用い、図
３に示されるガラス繊維製部材入り石膏板Ｃを構成する
芯材１が、下記の表２に示される配合になるように、例
１〜６と同様にして石膏スラリーを得、ガラス繊維製部
材としてオリベスト社製のガラスメッシュ２’を用い
て、常法により、厚さ１２．５ｍｍ、幅９１０ｍｍ及び
長さ１８２０ｍｍの比重が１である６種類のガラス繊維
製部材入り石膏板Ｃを得た。尚、焼石膏に配合するガラ
ス繊維及び澱粉は例２〜６のときと同様のものを使用
し、また、酢酸ビニル系樹脂はクラリアントポリマー社
製の商品名モビニールを使用した。尚、例１２及び例１
３が本発明に相当し、他は比較例である。II. Regarding the gypsum board containing a glass fiber member of the gypsum-based building material C, (Examples 7 to 13) Instead of a molding machine in a commonly used gypsum board manufacturing facility, the above-mentioned JP-B-63-65482 was used.
Using the vertically arranged molding belts disclosed in Japanese Patent Application Publication No. H10-205, the core material 1 constituting the gypsum board C containing the glass fiber member shown in FIG. A gypsum slurry was obtained in the same manner as in Examples 1 to 6, and a specific gravity of 12.5 mm in thickness, 910 mm in width and 1820 mm in length was 1 in a conventional manner using a glass mesh 2 ′ manufactured by Olivet as a glass fiber member. Six types of gypsum boards C containing glass fiber members were obtained. The glass fiber and starch used in the calcined gypsum were the same as those used in Examples 2 to 6, and the vinyl acetate resin used was Movinyl manufactured by Clariant Polymer. Examples 12 and 1
3 corresponds to the present invention, and the other are comparative examples.
【００２７】表２ 石膏１００重量部当りの配合量 Table 2 Amounts per 100 parts by weight of gypsum
【００２８】III.各石膏系建材の評価（面内強度と表面
硬度） （ａ）例１〜６で得られた各石膏ボード ・面内強度 石膏系建材の面内強度の評価として、一般に、釘側面抵
抗値が採用されていることから、例１〜６で得られたそ
れぞれの石膏ボードについて、気乾条件で釘側面抵抗を
測定した。その測定方法は、ＡＳＴＭ Ｄ１０３７に定
める方法に準じて行った。測定結果を表３に示す。 ・表面硬度 石膏ボードの表層が石膏ボード用原紙であることから、
省略した。III. Evaluation of each gypsum-based building material (in-plane strength and surface hardness) (a) Each gypsum board obtained in Examples 1 to 6 • In-plane strength As an evaluation of the in-plane strength of the gypsum-based building material, Since the nail side surface resistance value was adopted, the nail side surface resistance of each of the gypsum boards obtained in Examples 1 to 6 was measured under air-dry conditions. The measurement was performed according to the method specified in ASTM D1037. Table 3 shows the measurement results.・ Surface hardness Because the surface layer of gypsum board is gypsum board base paper,
Omitted.
【００２９】表３ 石膏ボードの釘側面抵抗の測定結果 Table 3 Measurement results of nail side resistance of gypsum board
【００３０】（ｂ）例７〜１３で得られた各ガラス繊維
製部材入り石膏板 ・面内強度 例７〜１３で得られたそれぞれのガラス繊維製部材入り
石膏板について、上記（ａ）と同様にして釘側面抵抗を
測定した。 ・表面硬度 各石膏系建材の表面性の評価として、ＪＩＳ Ａ６９０
４「せっこうプラスター」に定める硬度試験に準じて行
った。測定結果を表４に示す。(B) Gypsum plates with glass fiber members obtained in Examples 7 to 13-In-plane strength For each of the gypsum plates with glass fiber members obtained in Examples 7 to 13, The nail side resistance was measured in the same manner.・ Surface hardness JIS A690 is used to evaluate the surface properties of each gypsum-based building material.
4 The test was performed according to the hardness test specified in “Gypsum plaster”. Table 4 shows the measurement results.
【００３１】表４ ガラス繊維製部材入り石膏板の釘側
面抵抗及び表面硬度の測定結果 Table 4 Measurement results of nail side resistance and surface hardness of gypsum board containing glass fiber members
【００３２】尚、例１〜１３で得られたそれぞれの石膏
ボードとガラス繊維製部材入り石膏板の石膏系建材は、
いずれも有害な揮発性物質の発生はなかった。The gypsum-based building materials of the gypsum board and the gypsum board containing the glass fiber member obtained in Examples 1 to 13 were as follows:
No harmful volatile substances were generated.
【００３３】[0033]
【発明の効果】本発明によれば、石膏系建材が有する、
防耐火性、施工性、寸法安定性、経済性及び居住性等の
優れた性能を保持しつつ、有害な揮発性物質を発生させ
ることなく、耐力壁用の面材としての面内強度の向上し
た石膏系建材、特に、表面硬度を高めた内装用の石膏系
建材が得られる。According to the present invention, the gypsum-based building material has
Improves in-plane strength as a surface material for load-bearing walls without generating harmful volatile substances while maintaining excellent performance such as fire resistance, workability, dimensional stability, economy and habitability. Gypsum-based building materials, particularly gypsum-based building materials for interiors with increased surface hardness.
【図１】 芯材からなる石膏系建材の横断面図。FIG. 1 is a cross-sectional view of a gypsum-based building material composed of a core material.
【図２】 芯材の表裏面のそれぞれに石膏ボード用原紙
が接着された石膏系建材の横断面図。FIG. 2 is a cross-sectional view of a gypsum-based building material in which gypsum board base paper is bonded to each of the front and back surfaces of a core material.
【図３】 芯材の表裏面下のそれぞれにガラス繊維製部
材が埋設された横断の一部を示す横断面図。FIG. 3 is a cross-sectional view showing a part of a cross section in which a glass fiber member is buried below the front and back surfaces of a core material.
Ａ：芯材からなる石膏系建材 Ｂ：芯材の表裏面のそれぞれに石膏ボード用原紙が接着
された石膏系建材 Ｃ：芯材の表裏面下のそれぞれにガラス繊維製部材が埋
設された石膏系建材 １：芯材 ２：石膏ボード用原紙 ２’：ガラス繊維製部材A: Gypsum-based building material composed of a core material B: Gypsum-based building material in which gypsum board base paper is bonded to each of the front and back surfaces of the core material C: Gypsum in which a glass fiber member is embedded in each of the bottom and front surfaces of the core material System building materials 1: Core material 2: Base paper for gypsum board 2 ': Glass fiber member
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 14:42 Ｃ０４Ｂ 14:42 Ｂ 24:38 24:38 Ｚ 24:26） 24:26） Ｃ (72)発明者 山下 琢治 東京都足立区江北２−１−１ 吉野石膏株 式会社技術研究所内 Ｆターム(参考） 2E162 CE00 FA02 FA14 FD00 4F100 AE06A AG00A AG00B AG00C AJ07A AK22A BA01 BA03 BA06 BA10B BA10C BA13 CA30A DG01A DG01B DG01C DG10B DG10C GB08 JD05A JJ07 JK01 JK12 JK14 JL01 JL02 JL04 YY00A 4G012 PA17 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C04B 14:42 C04B 14:42 B 24:38 24:38 Z 24:26) 24:26) C (72) ) Inventor Takuji Yamashita 2-1-1, Eboku, Adachi-ku, Tokyo Yoshino Gypsum Co., Ltd. F-term in Technical Research Institute (reference) 2E162 CE00 FA02 FA14 FD00 4F100 AE06A AG00A AG00B AG00C AJ07A AK22A BA01 BA03 BA06 BA10B BA10C BA13 CA30A DG01A01DG DG10B DG10C GB08 JD05A JJ07 JK01 JK12 JK14 JL01 JL02 JL04 YY00A 4G012 PA17
Claims (11)
とし、該石膏にガラス繊維と澱粉とが配合されて形成さ
れていることを特徴とする耐力壁に適する石膏系建材。1. A gypsum-based building material suitable for a load-bearing wall, wherein the core material having a plate-like shape is mainly gypsum, and the gypsum is formed by mixing glass fiber and starch.
とし、該石膏にガラス繊維と澱粉とが配合されて形成さ
れ、且つ該芯材の表裏面に石膏ボード用原紙またはガラ
ス繊維製部材が接着されていることを特徴とする耐力壁
に適する石膏系建材。2. A gypsum-based gypsum board or glass sheet is formed on a gypsum-based core material, wherein the core material is a gypsum as a main component, and a glass fiber and a starch are blended into the gypsum. A gypsum-based building material suitable for a load-bearing wall, wherein a fiber member is adhered.
とし、該石膏にガラス繊維と澱粉とが配合されて形成さ
れ、且つ該芯材の表裏面下の少なくとも一方にガラス繊
維製部材が埋設されていることを特徴とする耐力壁に適
する石膏系建材。3. A core material having a plate-like shape is formed mainly of gypsum, and a glass fiber and a starch are compounded in the gypsum, and glass fiber is provided on at least one of lower and upper surfaces of the core material. A gypsum-based building material suitable for a load-bearing wall, wherein the member is buried.
合されて形成されている請求項１〜３の何れか１項に記
載の耐力壁に適する石膏系建材。4. The gypsum-based building material suitable for a load-bearing wall according to any one of claims 1 to 3, wherein the core material is further formed by blending a vinyl acetate-based resin.
剤とが配合されて形成されている請求項１〜３の何れか
１項に記載の耐力壁に適する石膏系建材。5. A gypsum-based building material suitable for a load-bearing wall according to any one of claims 1 to 3, wherein the core material is further formed by blending a vinyl acetate resin and a waterproofing agent.
部当たり、０．３〜５重量部である請求項１〜５の何れ
か１項に記載の耐力壁に適する石膏系建材。6. A gypsum-based building material suitable for a load-bearing wall according to any one of claims 1 to 5, wherein the blending amount of the glass fiber is 0.3 to 5 parts by weight per 100 parts by weight of gypsum.
の範囲にある請求項１〜６の何れか１項に記載の耐力壁
に適する石膏系建材。7. A gypsum-based building material suitable for a load-bearing wall according to any one of claims 1 to 6, wherein the length of the glass fiber is in the range of 1/8 to 2 inches.
り、０．３〜５重量部である請求項１〜７の何れか１項
に記載の耐力壁に適する石膏系建材。8. A gypsum-based building material suitable for a load-bearing wall according to any one of claims 1 to 7, wherein the amount of the starch is 0.3 to 5 parts by weight per 100 parts by weight of gypsum.
〜８の何れか１項に記載の耐力壁に適する石膏系建材。9. The starch according to claim 1, wherein the starch is an etherified starch.
A gypsum-based building material suitable for the load-bearing wall according to any one of Items 1 to 8.
００重量部当たり、０．１〜５重量部である請求項１〜
９の何れか１項に記載の耐力壁に適する石膏系建材。10. The amount of the vinyl acetate resin is gypsum 1
The amount is 0.1 to 5 parts by weight per 100 parts by weight.
A gypsum-based building material suitable for the load-bearing wall according to any one of claims 9 to 9.
当たり０．１〜５重量部である請求項１〜１０の何れか
１項に記載の耐力壁に適する石膏系建材。11. A gypsum-based building material suitable for a load-bearing wall according to any one of claims 1 to 10, wherein the amount of the waterproofing agent is 0.1 to 5 parts by weight per 100 parts by weight of gypsum.
Priority Applications (1)
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|---|---|---|---|
| JP2000256244A JP2002070239A (en) | 2000-08-25 | 2000-08-25 | Gypsum building material suitable for bearing wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000256244A JP2002070239A (en) | 2000-08-25 | 2000-08-25 | Gypsum building material suitable for bearing wall |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009163670A Division JP5642948B2 (en) | 2009-07-10 | 2009-07-10 | Gypsum board and gypsum board suitable for bearing walls |
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| Publication Number | Publication Date |
|---|---|
| JP2002070239A true JP2002070239A (en) | 2002-03-08 |
Family
ID=18744882
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| Application Number | Title | Priority Date | Filing Date |
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