JPH09328837A - Rigid noncombustible gypsum board - Google Patents
Rigid noncombustible gypsum boardInfo
- Publication number
- JPH09328837A JPH09328837A JP17175896A JP17175896A JPH09328837A JP H09328837 A JPH09328837 A JP H09328837A JP 17175896 A JP17175896 A JP 17175896A JP 17175896 A JP17175896 A JP 17175896A JP H09328837 A JPH09328837 A JP H09328837A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum board
- base paper
- pulp
- gypsum
- noncombustible
- 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
- 239000010440 gypsum Substances 0.000 title claims abstract description 67
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 67
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000010893 paper waste Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 229920001131 Pulp (paper) Polymers 0.000 description 7
- 239000011162 core material Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 235000002906 tartaric acid Nutrition 0.000 description 3
- 239000011975 tartaric acid Substances 0.000 description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- -1 and if necessary Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Finishing Walls (AREA)
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、剛性と不燃性に特
に優れた性能を有する剛性不燃石膏ボードに関し、更に
詳しくは石膏ボードの加湿時の剛性を改善し、且つ火災
時等の強熱時における発熱、発煙、発炎等が著しく改良
された剛性不燃石膏ボードに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rigid noncombustible gypsum board having excellent properties in rigidity and noncombustibility, and more particularly, it improves the rigidity of the gypsum board when humidified and when it is exposed to strong heat such as fire. The invention relates to a rigid noncombustible gypsum board in which heat generation, smoke generation, flame generation, etc. are remarkably improved.
【０００２】[0002]
【従来の技術】近年、石膏ボードは、防・耐火性、遮音
性、断熱性及び施工性等の性能に加え、廉価であること
から、建材として広範に用いられている。その石膏ボー
ドは、概して焼石膏を硬化せしめた石膏を主とする芯材
の表裏面を、石膏ボード用原紙（以下、単に原紙と云
う）で被覆されてなり、その曲げ強度は概ね原紙の引張
強さに依存し、石膏の脆性が原紙により補われている。2. Description of the Related Art In recent years, gypsum board has been widely used as a building material because it is inexpensive in addition to its performance such as anti-fire / fire resistance, sound insulation, heat insulation and workability. The gypsum board is made by coating the front and back surfaces of a core material, which is mainly gypsum obtained by hardening calcined gypsum, with gypsum board base paper (hereinafter simply referred to as base paper), and its bending strength is approximately the tensile strength of the base paper. Depending on the strength, the brittleness of gypsum is compensated by the base paper.
【０００３】一方、その原紙は、一般に新聞紙等の故紙
パルプを主原料として構成されており、原紙の引張強さ
は概してそのパルプの坪量と比例関係にあることから、
石膏ボードにはその強度を保持するうえから坪量２００
ｇ／ｍ2以上の故紙パルプを含む原紙が用いられてい
る。このように原紙は、その主原料として故紙パルプが
使用され、石膏ボードの強度の保持上おのずと故紙パル
プの坪量の多いものが使用されている。On the other hand, the base paper is generally composed mainly of waste paper pulp such as newspaper, and the tensile strength of the base paper is generally proportional to the basis weight of the pulp.
Gypsum board has a basis weight of 200 to maintain its strength.
A base paper containing waste paper pulp of g / m 2 or more is used. As described above, the base paper uses the waste paper pulp as the main raw material, and in order to maintain the strength of the gypsum board, the waste paper pulp having a large basis weight is used.
【０００４】従って、石膏ボードは、火災時等の強熱時
においては、芯材を構成する石膏は全く燃焼しないもの
の、その表裏面を被覆する原紙が可燃性であるために、
発熱、発煙、発炎等が皆無ではなく、建設省告示第１８
２８号の不燃材料規格を満足しても、ＩＳＯ（国際規
格）１１８２の不燃性試験（基材試験残炎時間２０秒以
下）を満足することはできなかった。Therefore, in the gypsum board, when the gypsum constituting the core material does not burn at all during a strong heat such as a fire, the base paper covering the front and back surfaces of the gypsum board is flammable.
There is no fever, smoke, or flame, and the Ministry of Construction Notification No. 18
Even if the noncombustible material standard of No. 28 was satisfied, the noncombustible test of ISO (International Standard) 1182 (base material test afterflame time of 20 seconds or less) could not be satisfied.
【０００５】一方、最近の住宅は高気密化が進み、それ
にともない室内の湿度が上昇し、内装建材として用いら
れる石膏ボードは空気中の水分の影響を受ける頻度が多
くなってきている。特に、石膏ボードが、天井板として
用いられる場合には、ビス止め間隔等が広すぎると、石
膏ボードは湿気を吸湿して剛性が低下し、自重による変
形やタワミ等を発生するという問題があり、このような
加湿時の変形やタワミを防止するために、従来より石膏
ボードの芯材中にホウ酸や酒石酸を添加することが知ら
れている。On the other hand, in recent years, the airtightness of homes has increased, and along with this, the humidity in the room has risen, and the gypsum board used as an interior building material is more often affected by the moisture in the air. In particular, when the gypsum board is used as a ceiling board, if the screw-fixing interval is too wide, the gypsum board absorbs moisture and the rigidity is lowered, and there is a problem that deformation due to its own weight or deflection occurs. In order to prevent such deformation and deflection during humidification, it has been conventionally known to add boric acid or tartaric acid to the core material of gypsum board.
【０００６】[0006]
【発明が解決しようとしている課題】しかしながら、こ
れらホウ酸や酒石酸は高価であり、又、酒石酸は焼石膏
の硬化時間を遅延させる等の問題があり、汎用されるに
は至っていないのが現状である。従って本発明の目的
は、石膏ボードの本来有する利便性を生かしたまま、石
膏ボードの加湿時の剛性低下を改善し、且つ火災時等の
強熱時における発熱、発煙、発炎等の問題が著しく改良
され、前記建設省告示不燃材料規格とＩＳＯ（国際規
格）の不燃性試験とを同時に満足する剛性不燃石膏ボー
ドを提供することである。However, these boric acid and tartaric acid are expensive, and tartaric acid has a problem that it delays the curing time of calcined gypsum, so that it is not widely used at present. is there. Therefore, the object of the present invention is to improve the rigidity decrease when the gypsum board is humidified while keeping the original convenience of the gypsum board, and there is a problem of heat generation, smoke generation, and flame generation during intense heat such as a fire. It is to provide a rigid noncombustible gypsum board that has been significantly improved and simultaneously satisfies the above-mentioned Ministry of Construction's noncombustible material standard and the ISO (international standard) noncombustibility test.
【０００７】[0007]
【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。即ち、本発明は、石膏芯の表裏面
を石膏ボード用原紙で被覆してなる石膏ボードにおい
て、表裏面の少なくとも一方の原紙が、パルプを主成分
とし且つ無機繊維が混抄されていることを特徴とする剛
性不燃石膏ボードである。The above object can be achieved by the present invention described below. That is, the present invention is a gypsum board obtained by coating the front and back of a gypsum core with a base paper for gypsum board, at least one of the front and back base paper, pulp is the main component and inorganic fibers are mixed It is a rigid noncombustible gypsum board.
【０００８】本発明者らは前記従来技術の課題解決につ
いて鋭意検討を行ったところ、原紙中に無機繊維を混抄
せしめ、且つ原紙中のパルプの含有量を下げることによ
り、石膏ボードの加湿時の剛性低下及び前記両規格を共
に満足することを見い出した。[0008] The inventors of the present invention have made extensive studies to solve the above-mentioned problems of the prior art. As a result, by mixing inorganic fibers in the base paper and reducing the pulp content in the base paper, the gypsum board at the time of humidification can be improved. It has been found that both the reduction in rigidity and the above two standards are satisfied.
【０００９】[0009]
【発明の実施の形態】次に好ましい実施の形態を挙げて
本発明を更に詳細に説明する。本発明に使用する原紙
は、パルプの含有量が７０〜１７５ｇ／ｍ2で構成さ
れ、好ましくは１００〜１６０ｇ／ｍ2である。パルプ
の含有量が１７５ｇ／ｍ2を越えると、該原紙を用いて
得られる石膏ボードが上記不燃性試験の残炎時間に合格
し難く、一方、７０ｇ／ｍ2未満では得られる石膏ボー
ドの強度が不足するからである。Next, the present invention will be described in more detail with reference to preferred embodiments. The base paper used in the present invention has a pulp content of 70 to 175 g / m 2 , and preferably 100 to 160 g / m 2 . When the pulp content exceeds 175 g / m 2 , it is difficult for the gypsum board obtained by using the base paper to pass the afterflame time of the above-mentioned incombustibility test, while when it is less than 70 g / m 2 , the strength of the gypsum board obtained is less than 70 g / m 2. Because there is a shortage.
【００１０】尚、本発明で使用するパルプは、新聞等の
故紙及び／又はバージンパルプで構成することができ、
本発明で使用する原紙は前記素材を主材として従来の抄
造方式によって得られる。勿論、原紙に対する他の添加
剤等の使用も従来技術と同様である。そして、使用する
パルプがバージンパルプの場合は、バージンパルプは原
木として針葉樹及び闊葉樹から適宜選択して使用するこ
とができ、これを用いて得られるバージンパルプ抄造紙
は、そのパルプ自体が故紙パルプと比べて長繊維で且つ
繊維が劣化していないため、原紙の引張強さは故紙抄造
紙より約３５％向上する。このことにより、バージンパ
ルプ抄造紙が故紙抄造紙の坪量より約３５％少ない坪量
であっても、バージンパルプ抄造紙の強度はその故紙抄
造紙の強度と同等になる。従って本発明ではバージンパ
ルプ抄造紙を原紙として使用することが好ましい。The pulp used in the present invention can be composed of waste paper such as newspaper and / or virgin pulp,
The base paper used in the present invention is obtained by a conventional papermaking method using the above material as a main material. Of course, the use of other additives and the like for the base paper is the same as in the prior art. Then, when the pulp used is virgin pulp, the virgin pulp can be used by appropriately selecting from coniferous trees and stir-leaved trees as raw wood, and the virgin pulp paper obtained using this is itself a waste paper pulp. In comparison, since the fibers are long fibers and the fibers are not deteriorated, the tensile strength of the base paper is improved by about 35% as compared with the waste papermaking paper. Thus, even if the virgin pulp paper has a basis weight which is about 35% less than the basis weight of the waste paper, the strength of the virgin pulp paper becomes equal to the strength of the waste paper. Therefore, in the present invention, it is preferable to use virgin pulp paper as the base paper.
【００１１】本発明では、上記原紙に無機繊維を混抄す
るが、混抄に使用する無機繊維としては、例えば、ガラ
ス繊維、ロックウール、ワレストナイト及びセピオライ
ト等の繊維が挙げられる。そして、これらの無機繊維の
混抄は原紙の加湿時の剛性を向上させるばかりでなく、
原紙の不燃性を向上させることにもなる。尚、無機繊維
の使用においては、ガラス繊維が故紙パルプやバージン
パルプと馴染み易く且つ緊密になり易いので、無機繊維
としてはガラス繊維が好ましい。In the present invention, the above-mentioned base paper is mixed with inorganic fibers, and examples of the inorganic fibers used for the mixing include glass fibers, rock wool, wallstoneite and sepiolite. And, the mixed paper of these inorganic fibers not only improves the rigidity of the base paper during humidification,
It also improves the incombustibility of the base paper. In the use of inorganic fibers, glass fibers are preferred as the inorganic fibers because the glass fibers are easily compatible with the waste paper pulp and virgin pulp and tend to become intimate.
【００１２】更に、本発明に使用する無機繊維の形状
は、径１〜３０μｍ、長さ０．１〜２０ｍｍのものを使
用することができるが、これを混抄して得られる原紙を
用いた石膏ボードの剛性等を一様にするうえでは、無機
繊維が均一に原紙中に分散して混在していることが望ま
しく、そのために無機繊維の好ましい径は５〜２０μ
ｍ、長さは０．５〜１０ｍｍである。Further, the shape of the inorganic fiber used in the present invention may be one having a diameter of 1 to 30 μm and a length of 0.1 to 20 mm, and gypsum using a base paper obtained by mixing these In order to make the rigidity and the like of the board uniform, it is desirable that the inorganic fibers are evenly dispersed and mixed in the base paper. Therefore, the preferred diameter of the inorganic fibers is 5 to 20 μm.
m, the length is 0.5 to 10 mm.
【００１３】原紙にガラス繊維を混抄する際には、全繊
維の量を１００重量部とした場合、パルプの含有量は９
０〜５０重量部である。パルプの含有量が９０重量部よ
り多いと、ガラス繊維による石膏ボードの吸湿時の剛性
や不燃性の改善効果が殆どなく、５０重量部より少ない
と原紙の引張強さが弱くなり、剛性不燃石膏ボードとし
ての強度は低下する。その望ましいパルプ含有量は、８
０〜６０重量部である。従って無機繊維の全繊維中にお
ける添加量は１０〜５０重量部であり、好ましくは２０
〜４０重量部である。When glass fiber is mixed into the base paper, the pulp content is 9 when the total fiber amount is 100 parts by weight.
0 to 50 parts by weight. When the content of pulp is more than 90 parts by weight, the effect of improving the rigidity and noncombustibility of the gypsum board by the glass fiber when absorbing moisture is scarce, and when it is less than 50 parts by weight, the tensile strength of the base paper becomes weak and the rigid noncombustible gypsum. The strength as a board decreases. Its desirable pulp content is 8
It is 0 to 60 parts by weight. Therefore, the amount of the inorganic fiber added in all the fibers is 10 to 50 parts by weight, preferably 20.
４０40 parts by weight.
【００１４】又、建物に使用された剛性不燃石膏ボード
は、火災に際しては、一方の面が加熱されるので必ずし
も石膏芯材の両面が前記無機繊維混抄原紙で被覆されて
いる必要はないが、石膏芯材の両面が前記無機繊維混抄
原紙で被覆されていることが好ましい。又、本発明の剛
性不燃石膏ボードは、その芯材を、石膏としては主に工
業的に多用されるβ型焼石膏を用い、更に必要に応じて
パーライト、バーミキュライト等の軽量骨材、各種発泡
剤、石膏用減水剤、石膏凝結促進剤、石膏凝結遅延剤、
補強繊維等の公知のものを併用した構成としてもよく、
該石膏ボードを製造するに際しては所定量の焼石膏、
水、添加剤等を混合してスラリーとし、常法に従って前
記原紙を用いて成形し且つ硬化乾燥して得られる。In the case of a rigid noncombustible gypsum board used in a building, one side is heated in the event of a fire, so both sides of the gypsum core are not necessarily covered with the inorganic fiber mixed raw paper, It is preferable that both sides of the gypsum core material are covered with the inorganic fiber-blended base paper. In addition, the rigid noncombustible gypsum board of the present invention uses the core material, β-type gypsum mainly used industrially as gypsum, and if necessary, perlite, lightweight aggregate such as vermiculite, and various foams. Agent, water reducing agent for gypsum, gypsum setting accelerator, gypsum setting retarder,
It may be configured in combination with known materials such as reinforcing fibers,
When manufacturing the gypsum board, a prescribed amount of gypsum plaster,
It can be obtained by mixing water, additives and the like to form a slurry, molding the base paper according to a conventional method, and curing and drying.
【００１５】[0015]
【実施例】次に実施例及び比較例を挙げて本発明を更に
具体的に説明する。 実施例１〜３ 故紙パルプとガラス繊維の混抄紙の原紙引張強さ、及び
その原紙を用いて常法により製造した１２．５ｍｍ厚、
比重０．６５の石膏ボードの不燃性試験結果及び加湿時
のタワミ測定結果を下記表１に示す。Next, the present invention will be described more specifically with reference to examples and comparative examples. Examples 1 to 3 Tensile strength of base paper of mixed paper made from waste paper pulp and glass fiber, and 12.5 mm thickness produced by a conventional method using the base paper,
Table 1 below shows the results of the nonflammability test of the gypsum board having a specific gravity of 0.65 and the deflection measurement result when humidified.
【００１６】実施例４〜６ バージンパルプとガラス繊維の混抄紙の原紙引張強さ、
及びその原紙を用いて常法により製造した１２．５ｍｍ
厚、比重０．６５の石膏ボードの不燃性試験結果及び加
湿時のタワミ測定結果を下記表１に示す。Examples 4 to 6 Base paper tensile strength of mixed paper of virgin pulp and glass fiber,
And 12.5 mm manufactured by a conventional method using the base paper
Table 1 below shows the results of the non-combustibility test of a gypsum board having a thickness and a specific gravity of 0.65 and the deflection measurement result when humidified.
【００１７】比較例１〜２ 通常の故紙抄造紙の原紙引張強さ、及びその原紙を用い
て常法により製造した１２．５ｍｍ厚、比重０．６５の
石膏ボードの不燃性試験結果及び加湿時のタワミ測定結
果を下記表１に示す。Comparative Examples 1 to 2 Non-combustibility test results of a gypsum board having a tensile strength of 12.5 mm thick and a specific gravity of 0.65 produced by a conventional method using the base paper tensile strength of ordinary waste paper and humidification Table 1 below shows the results of the deflection measurement.
【００１８】[0018]
【表１】 ・縦方向原紙引張強さ（ｋｇｆ）：ＪＩＳ Ｐ８１１３
に準拠 ・不燃材料試験：建設省告示１８２８号による不燃性試
験、Ａは発煙係数 （ＣＡ）規格値３０秒以下、Ｂは基
材試験（Δｔ℃）規格値５０以下 ・残炎時間（秒）：ＩＳＯ１１８２による基材試験残炎
時間（秒）規格値２０以下 ・タワミ：ＡＳＴＭ−Ｃ−４７３による３２℃９０％Ｒ
Ｈ４８時間加湿時のタワミ[Table 1] ・ Longitudinal base paper tensile strength (kgf): JIS P8113
Non-combustible material test: Non-combustible test according to Ministry of Construction Notification No. 1828, A is smoke emission coefficient (CA) standard value 30 seconds or less, B is base material test (Δt ° C) standard value 50 or less ・ Afterflame time (second) : Substrate test afterflame time (seconds) according to ISO1182 Standard value 20 or less-Tawami: 32 ° C 90% R according to ASTM-C-473
H 48 hours humidification
【００１９】[0019]
【発明の効果】以上説明したように、本発明によれば、
無機繊維特にガラス繊維が混抄され且つパルプ量の少な
い石膏ボード用原紙で被覆してなる剛性不燃石膏ボード
は、従来の石膏ボードの利便性、例えば、遮音性、断熱
性、軽量性及び施工性等の性能を生かしたまま、剛性が
向上し且つ加湿時にも変形やタワミがなく、且つ従来品
よりも更に防・耐火性の向上した石膏製品であり、火災
時における発熱、発煙、発炎等が著しく改良されてお
り、建設省告示１８２８号による不燃材料規格及びＩＳ
Ｏ（国際規格）１１８２の不燃性試験（基材試験残炎時
間２０秒以下）を満足する。As described above, according to the present invention,
Rigid noncombustible gypsum board composed of inorganic fiber, especially glass fiber, and coated with a base paper for gypsum board with a small amount of pulp is convenient for conventional gypsum board, for example, sound insulation, heat insulation, lightweight and workability. It is a gypsum product with improved rigidity, no deformation or warping even when humidified, and more improved fire resistance and fire resistance than conventional products, while maintaining the performance of Significantly improved, non-combustible material standards and IS according to Ministry of Construction Notification 1828
Satisfies the nonflammability test of O (International Standard) 1182 (base material test afterflame time of 20 seconds or less).
Claims (4)
覆してなる石膏ボードにおいて、表裏面の少なくとも一
方の原紙が、パルプを主成分とし且つ無機繊維が混抄さ
れていることを特徴とする剛性不燃石膏ボード。1. A gypsum board obtained by coating the front and back surfaces of a gypsum core with a gypsum board base paper, characterized in that at least one of the front and back base papers contains pulp as a main component and inorganic fibers are mixed. Rigid noncombustible gypsum board.
ｍ2である請求項１に記載の剛性不燃石膏ボード。2. The pulp content of the base paper is 70 to 175 g /
The rigid noncombustible gypsum board according to claim 1, which is m 2 .
求項１乃至２記載の剛性不燃石膏ボード。3. The rigid noncombustible gypsum board according to claim 1, wherein the pulp is mainly composed of virgin pulp.
至３記載の剛性不燃石膏ボード。4. The rigid noncombustible gypsum board according to claim 1, wherein the inorganic fibers are glass fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17175896A JPH09328837A (en) | 1996-06-11 | 1996-06-11 | Rigid noncombustible gypsum board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17175896A JPH09328837A (en) | 1996-06-11 | 1996-06-11 | Rigid noncombustible gypsum board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09328837A true JPH09328837A (en) | 1997-12-22 |
Family
ID=15929144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17175896A Pending JPH09328837A (en) | 1996-06-11 | 1996-06-11 | Rigid noncombustible gypsum board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09328837A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006082487A (en) * | 2004-09-17 | 2006-03-30 | Yoshino Gypsum Co Ltd | Gypsum board manufacturing method |
| JP2016121048A (en) * | 2014-12-25 | 2016-07-07 | チヨダウーテ株式会社 | Gypsum member, gypsum board, and method for manufacturing gypsum member |
-
1996
- 1996-06-11 JP JP17175896A patent/JPH09328837A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006082487A (en) * | 2004-09-17 | 2006-03-30 | Yoshino Gypsum Co Ltd | Gypsum board manufacturing method |
| JP2016121048A (en) * | 2014-12-25 | 2016-07-07 | チヨダウーテ株式会社 | Gypsum member, gypsum board, and method for manufacturing gypsum member |
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