JPH01132899A - Incombustible gypsum board base paper - Google Patents
Incombustible gypsum board base paperInfo
- Publication number
- JPH01132899A JPH01132899A JP28337387A JP28337387A JPH01132899A JP H01132899 A JPH01132899 A JP H01132899A JP 28337387 A JP28337387 A JP 28337387A JP 28337387 A JP28337387 A JP 28337387A JP H01132899 A JPH01132899 A JP H01132899A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- gypsum board
- base paper
- noncombustible
- paper
- 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 62
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 62
- 239000010410 layer Substances 0.000 claims abstract description 62
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000010425 asbestos Substances 0.000 claims abstract description 9
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002344 surface layer Substances 0.000 claims abstract description 6
- 230000002745 absorbent Effects 0.000 claims abstract 3
- 239000002250 absorbent Substances 0.000 claims abstract 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 abstract description 7
- 239000002657 fibrous material Substances 0.000 abstract description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 abstract description 4
- 239000010893 paper waste Substances 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract 1
- 239000011229 interlayer Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 56
- 239000000203 mixture Substances 0.000 description 11
- 239000012790 adhesive layer Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000454 talc Substances 0.000 description 4
- 229910052623 talc Inorganic materials 0.000 description 4
- -1 and as in the past Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000004816 latex Substances 0.000 description 3
- 229920000126 latex Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical group N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000013054 paper strength agent Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は不燃性石膏ボード原紙に関する。[Detailed description of the invention] Industrial applications The present invention relates to noncombustible gypsum board base paper.
従来の技術
従来の不燃性石膏ボード原紙は、特公昭５０−８４５７
号公報に示される如く、石膏に接する層が吸水性紙料か
らなり、中間層が非吸水性紙料からなり、最外層が不燃
性繊維からなる三層構造のものである。前記不燃性繊維
としては、岩綿、アスベストまたはガラス繊維であり、
アスベストが実用化されている。Conventional technology Conventional noncombustible gypsum board base paper was published in Japanese Patent Publication No. 50-8457.
As shown in the publication, it has a three-layer structure in which the layer in contact with gypsum is made of water-absorbing paper stock, the middle layer is made of non-water-absorbing paper stock, and the outermost layer is made of non-flammable fibers. The noncombustible fiber is rock wool, asbestos or glass fiber,
Asbestos has been put into practical use.
発明が解決しようとする問題点
前述の不燃性石膏ボード原紙の最外層に主として使用さ
れるアスベストは、健康上有害とされ、近来アスベスト
飛散による公害上の問題がある。Problems to be Solved by the Invention Asbestos, which is mainly used in the outermost layer of the above-mentioned noncombustible gypsum board base paper, is considered to be harmful to health, and recently there has been a pollution problem due to asbestos scattering.
問題点を解決するための手段
本発明は、石膏層を積層して石膏ボードを形成する多層
構造の石膏ボード原紙を、表層がアスベストを含まない
無機粉体を主体とする不燃性層からなり、裏層が吸水性
紙料層からなる構成とし、または前記両層の中間層が非
吸水性紙料層からなる三層構成とすることにより、前述
の問題点を解決し得たものである。Means for Solving the Problems The present invention provides a multilayered gypsum board base paper in which gypsum layers are laminated to form a gypsum board. The above-mentioned problems can be solved by using a three-layer structure in which the back layer is made of a water-absorbing paper stock layer, or the intermediate layer between the two layers is a non-water-absorbing paper stock layer.
前述の構成の不燃性石膏ボード原紙は、以下に示す抄造
方法により抄造される。The noncombustible gypsum board base paper having the above-mentioned structure is made by the paper making method shown below.
本発明の不燃性石膏ボード原紙は、主として無機粉体と
抄紙性に必要な繊維およびバインダよりなる紙料スラリ
を不燃性層として表層の形成に、従来同様石膏に接する
面に用いられてきた吸水性紙料を接着層として下層の形
成に用い、通常の板紙多層抄き抄紙機で抄造される。The noncombustible gypsum board base paper of the present invention uses a paper stock slurry mainly consisting of inorganic powder, fibers necessary for paper making, and a binder as a noncombustible layer to form the surface layer, and as in the past, water absorbing material was used on the surface in contact with gypsum. The paper stock is used as an adhesive layer to form the lower layer, and the paper is made using a normal paperboard multilayer paper machine.
前記不燃性層の無機粉体としては、水酸化アルミニウム
、水酸化マグネシウム、塩基性炭酸マグネシウム、炭酸
カルシウム、タルク、カオリン、硫酸カルシウム等が用
いられる。前記無機粉体中水酸化アルミニウムおよび水
酸化マグネシウムは、加熱されると酸化物と水蒸気とに
分解され、該水蒸気が石膏ボード原紙に自己消火性を付
与するが故に、−段と不燃性を向上せしめるので特に好
ましい。As the inorganic powder for the nonflammable layer, aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, calcium carbonate, talc, kaolin, calcium sulfate, etc. are used. The aluminum hydroxide and magnesium hydroxide in the inorganic powder are decomposed into oxides and water vapor when heated, and the water vapor imparts self-extinguishing properties to the gypsum board base paper, thereby significantly improving its nonflammability. This is particularly preferable because it makes it easier.
前記無機粉体の１種又は２種以上を繊維材料およびバイ
ンダと共に紙料スラリとなし、不燃性層として抄造し、
シート化する。One or more of the inorganic powders are made into a paper stock slurry together with a fiber material and a binder, and the paper is made into a nonflammable layer,
Make it into a sheet.
前記繊維材料は、不燃性層の抄造、シート化に当り、シ
ート強度を保持せしめるために必要であり、通常、バル
ブや故紙が原料として使用されるが、不燃性石膏ボード
と・しての使用目的によっては、他の繊維材料、例えば
ポリエステル等の有機繊維や、ガラス等の無機繊維を単
独でまたは前記パルプ系原料と併用して使用することも
できる。The above-mentioned fiber material is necessary to maintain the strength of the sheet when forming the non-combustible layer into a sheet, and normally valves and waste paper are used as raw materials, but it is also used as a non-combustible gypsum board. Depending on the purpose, other fiber materials, such as organic fibers such as polyester or inorganic fibers such as glass, may be used alone or in combination with the pulp-based raw material.
前記バインダとしては、スチレン・ブタジェン・ラバや
アクリル酸の共重合体等のラテックス ポリビニルアル
コール ポリアクリル７ミド、変性澱粉等の水溶性高分
子等の１種または２種以上を使用する。As the binder, one or more of water-soluble polymers such as latex such as styrene-butadiene-rubber and acrylic acid copolymer, polyvinyl alcohol, polyacryl 7mide, and modified starch are used.
前記無機粉体、繊維及びバインダの配合割合は、主に不
燃性石膏ボードとなったときに要求される耐火度により
決定されるが、一般的には無機粉体２０〜９０重量％（
以下％は重量％を表わス）、パルプ５〜５０％、バイン
ダ２〜２０％である。無機粉体が２０％以下では耐火性
が劣り、９０％以上では十分な強度を有するシートが得
難くなる。特に水酸化アルミニウムまたは水酸化マグネ
シウムを無機粉体中５％以上使用することが望ましい。The proportions of the inorganic powder, fibers, and binder are determined mainly by the fire resistance required for noncombustible gypsum board, but generally the inorganic powder is 20 to 90% by weight (
% represents weight %), pulp is 5 to 50%, and binder is 2 to 20%. If the amount of inorganic powder is less than 20%, the fire resistance will be poor, and if it is more than 90%, it will be difficult to obtain a sheet with sufficient strength. In particular, it is desirable to use 5% or more of aluminum hydroxide or magnesium hydroxide in the inorganic powder.
前記不燃性石膏ボード原紙の石膏に接する層は、基本的
には無サイズで新聞故紙を主体とする吸水性紙料よりな
る。The layer of the non-combustible gypsum board base paper that is in contact with the gypsum is basically made of a water-absorbing paper stock of no size and mainly consisting of waste newspaper.
前述の各材料からシートを得る方法としては、周知の各
種の方法を用いることができるが、繊維材料がパルプで
ある場合は、無機粉体、バルブおよびバインダ等からな
る混合物スラ、りを抄紙機によって抄造する方法が一般
的である。前述原紙の抄造の際、前記不燃性紙料による
層を最外層とし、従来の石膏ボード原紙同様下層を接着
層とし場合により中間層を設け、各層を抄き合わせて多
層構造とすることは、多層抄き抄紙機により実現可能と
なる。Various well-known methods can be used to obtain sheets from each of the above-mentioned materials, but when the fiber material is pulp, a mixture slurry consisting of inorganic powder, valves, binder, etc. A common method is to make paper by. When making the above-mentioned base paper, the layer made of the above-mentioned non-combustible paper stock is the outermost layer, the lower layer is an adhesive layer like the conventional gypsum board base paper, and if necessary, an intermediate layer is provided, and each layer is combined to form a multilayer structure. This can be realized using a multi-layer paper machine.
作 用
本発明は、前述の構成とすることにより健康上有害なア
スベストを一切使用することがなく、石膏ポートの裏面
を構成する石膏ボード原紙の層が不燃性層よりなるので
、石膏ボードとして難燃度の高い不燃性石膏ボードを得
ることができる。Function The present invention, having the above-mentioned structure, does not use any asbestos that is harmful to health, and since the layer of gypsum board base paper that forms the back side of the gypsum port is made of a nonflammable layer, it is difficult to use as a gypsum board. Noncombustible gypsum board with high flammability can be obtained.
実 施 例
以下本発明の構成を図面に示す実施例に基いて説明する
。Embodiments The structure of the present invention will be explained below based on embodiments shown in the drawings.
尚以下の実施例中の「部」および「％」はそれぞれ固形
分重量部および重量％を示す。In addition, "part" and "%" in the following examples indicate solid content parts by weight and weight %, respectively.
〔実施例１〕
以下に示す原料配合で混合した紙料を用いて常法により
抄紙機で抄造し、坪量２８０１／／ｒｒ？の、第１図に
示す如き、２層構造の不燃性石膏ボード原料を得た。[Example 1] Using a paper stock mixed with the raw material composition shown below, a paper was made using a paper machine in a conventional manner to produce a paper with a basis weight of 2801//rr. A noncombustible gypsum board raw material having a two-layer structure as shown in FIG. 1 was obtained.
配合組成
ａ、不燃性層 （坪量１８０ｇ／Ｆ７／＞バ
ルブ １８ 部
新聞故紙 １４〃
ガラス繊維 １ 〃
水酸化アルミニウム ２０〃
タルク ４１〃
ＳＢＲラテツクス ６ 〃
硫酸バンド ０．５％ポリアミド・
エピクロルヒドリン湿潤紙力向上剤
０．５％アクリルスチレン系共重合体サイズ剤
２．５％
凝集剤 ０．１〃ｂ０石膏層接
着層（吸水性紙量層）
（坪量１００ｙ ／ Ｔｒｌ）
新聞故紙 １００ 部
バンド １．２％前述の配合組成
により抄造された不燃性石膏ボード原紙の吸水性紙料層
例を上面とし、前記原紙上に石膏スラリを流展し、成形
、加熱乾燥して石膏ボードを作成した。該石膏ボードの
燃焼テスト結果は次の如くである。Blend composition a, non-flammable layer (Basic weight 180g/F7/> Bulb 18 parts Newspaper waste 14 Glass fiber 1 Aluminum hydroxide 20 Talc 41 SBR latex 6 Sulfuric acid band 0.5% polyamide
Epichlorohydrin wet paper strength improver
0.5% Acrylic styrene copolymer sizing agent 2.5% Coagulant 0.1 b0 Gypsum layer adhesive layer (water-absorbing paper layer) (Basic weight 100y/Trl) Waste newspaper 100 parts Band 1.2% A gypsum board was prepared by spreading a gypsum slurry onto the base paper, forming it, and drying it by heating, using the water-absorbing paper layer example of the noncombustible gypsum board base paper made from the above-mentioned composition as the upper surface. The combustion test results of the gypsum board are as follows.
テスト方法・・・・・・ＪＩＳＡ−１３２１結果：
単位面積当り発煙係数（Ｃａ） ２４．９残炎時
間 ０秒全厚さにわたる溶融亀
裂等（朋） 無し有害な変形等
無し排気温度曲線 標準温度曲線内前記結果か
ら明かな如く、本実施例の不燃性石膏ボード原紙を使用
した石膏ボードは難燃１級である。Test method: JISA-1321 results: Smoke generation coefficient (Ca) per unit area: 24.9 Afterflame time: 0 seconds No melt cracks, etc. throughout the entire thickness, etc. No harmful deformation, etc.
None Exhaust temperature curve Inside standard temperature curve As is clear from the above results, the gypsum board using the noncombustible gypsum board base paper of this example is flame retardant class 1.
更に、前記石膏ボードを折り曲げて破断面を観察したと
ころ、前記石膏層と不燃性石膏ボード原紙との間で剥離
は見られず、乾燥接着性は良好で、前記原紙は十分な接
着力を有するものであった。Furthermore, when the gypsum board was bent and the fractured surface was observed, no peeling was observed between the gypsum layer and the noncombustible gypsum board base paper, and the dry adhesion was good, and the base paper had sufficient adhesive strength. It was something.
また、前記石膏ボードを２０°Ｃ９湿度９５％下で１時
間保持した後、該石膏ボードを折り曲げて破断面を観察
したところ、前記石膏層と原紙との間で剥離はなく、十
分な接着力を保持していた。即ち高湿接着性も良好であ
った。Furthermore, after holding the gypsum board at 20°C and 95% humidity for 1 hour, the gypsum board was bent and the fractured surface was observed. There was no peeling between the gypsum layer and the base paper, and sufficient adhesive strength was observed. was held. That is, the high-humidity adhesion was also good.
〔実施例２〕
以下に示す原料配合で混合した紙料を用いて常法により
抄紙機で抄造し、坪量２８０ｇ／ｒｌの、第２図に示す
如き、３層構造の不燃性石膏ボード原紙を得た。[Example 2] A non-combustible gypsum board base paper with a three-layer structure as shown in Fig. 2 and having a basis weight of 280 g/rl was produced using a paper stock mixed with the raw material composition shown below using a paper machine in a conventional manner. I got it.
配合組成
ａ、不燃性層 （坪量８０．ｊｉｌ／ｍ’）
パルプ １８ 部
ガラス繊維 １ 〃
水酸化アルミニウム ２５〃
タルク ５０〃
ＳＢＲラテックス ６ 〃
硫酸バンド １％ポリアミド・エ
ピクロルヒドリン湿潤紙力向上剤
０．５％アクリルスチレン系共重合体サイズ剤
２．５％
凝集剤 ０．２％Ｃ１中間層
（坪量１００，９’／イ）新聞故紙
５５ 部
雑誌故紙 ２７〃
水酸化アルミニウム ６ 〃
タルク １２〃
サイズ ０，８％硫酸バンド
５．４％ｂ、 接着層（吸水性紙料
層）（坪量１００ｙ／ｒＩ？）新聞故紙
１００部
バンド １．２％前述の配合組
成により抄造された不燃性石膏ボード原紙を使用して、
前実施例同様に石膏ホードを作成した。該石膏ボードの
燃料テスト結果は次の如くである。Blend composition a, nonflammable layer (basis weight 80.jil/m')
Pulp 18 parts Glass fiber 1 Aluminum hydroxide 25 Talc 50 SBR latex 6 Band sulfate 1% polyamide/epichlorohydrin wet paper strength agent
0.5% Acrylic styrene copolymer sizing agent 2.5% Flocculant 0.2% C1 intermediate layer
(Basic weight 100,9'/a) Waste newspaper
55 Magazine waste paper 27〃 Aluminum hydroxide 6〃 Talc 12〃 Size 0.8% sulfuric acid band
5.4%b, adhesive layer (water-absorbing paper layer) (basis weight 100y/rI?) Waste newspaper
100 parts band 1.2% Using non-combustible gypsum board base paper made with the above-mentioned composition,
A gypsum hoard was made in the same manner as in the previous example. The fuel test results for the gypsum board are as follows.
テスト方法・・・・・・ＪＩＳＡ−１３２１結果：
単位面積当り発煙係数（Ｃａ） １８．７残炎時
間 ０秒全厚さにわたる溶解亀
裂等（朋） 無し有害な変形等
無し排気温度曲線 標準温度回線内前記結果か
ら明らかな如く、本実施例の不燃性石膏ボード原紙を使
用した石膏ボードは難燃１級である。Test method: JISA-1321 results: Smoke generation coefficient (Ca) per unit area: 18.7 Afterflame time: 0 seconds No dissolution cracks throughout the entire thickness (tomo) No harmful deformation, etc.
None Exhaust Temperature Curve Inside Standard Temperature Line As is clear from the above results, the gypsum board using the noncombustible gypsum board base paper of this example is flame retardant class 1.
更に、前実施例同様乾燥接着性および高湿接着性のテス
ト結果も良好であった。Furthermore, as in the previous example, the test results for dry adhesion and high humidity adhesion were also good.
発明の効果
前述の構成をなす本発明の不燃性石膏ボード原紙は、前
記説明で明かな通り、下記の諸効果を奏する。Effects of the Invention As is clear from the above description, the noncombustible gypsum board base paper of the present invention having the above-mentioned configuration has the following effects.
イ６健康上有害なアスベストを使用しない。B6: Do not use asbestos, which is harmful to health.
口０石膏ボードの表面層に含まれる可燃物材料が不燃性
無機粉体中に存在するため、石膏ボードとして難燃度が
高くなる。Since the combustible material contained in the surface layer of the gypsum board is present in the nonflammable inorganic powder, the gypsum board has a high degree of flame retardancy.
ハ、材料の配合により、所望の難燃度および強度を有す
る不燃性石膏ボードの製造が可能である。C. Noncombustible gypsum board with desired flame retardancy and strength can be manufactured by mixing the materials.
二２石膏層と原紙との間の接着層が従来の石膏ボード原
紙と同じ組成であるため、石膏スラリーと原紙との接着
性が良好である。22 Since the adhesive layer between the gypsum layer and the base paper has the same composition as the conventional gypsum board base paper, the adhesiveness between the gypsum slurry and the base paper is good.
ホ、従来の石膏ボード原紙と同じ組成の接着層を有する
ため、抄紙機による抄造時にあっても抄紙機の金網、フ
ェルト、カンバス等の諸抄紙要具に関する要具トラブル
等が発生せず、原紙抄造の生産性が良好である。E. Since it has an adhesive layer with the same composition as conventional gypsum board base paper, there is no problem with various paper making tools such as wire mesh, felt, canvas, etc. of the paper machine even during paper making using a paper machine, and the base paper The productivity of papermaking is good.
第１図は二層構造の実施例の拡大断面図、第２図は三層
構造の実施例の拡大断面図である。
ａ：不燃性層、ｂ：吸水性紙料層、Ｃ：中間層ＯFIG. 1 is an enlarged sectional view of a two-layer structure embodiment, and FIG. 2 is an enlarged sectional view of a three-layer structure embodiment. a: Nonflammable layer, b: Water-absorbing paper layer, C: Intermediate layer O
Claims (1)
石膏ボード原紙において、該石膏 ボード原紙の表層がアスベストを含まない無機粉体を主
体とする不燃性層からなり、裏層が吸水性紙料層からな
ることを特徴とする不燃性石膏ボード原紙。 ２、石膏層を積層して石膏ボードを形成する多層構成の
石膏ボード原紙において、該石膏 ボード原紙の表層がアスベストを含まない無機粉体を主
体とする不燃性層からなり、裏層が吸水性紙料層からな
り、中間層が非吸水性紙料層からなることを特徴とする
不燃性石膏ボード原紙。 ３、無機粉体を主体とする不燃性層が水酸化アルミニウ
ムまたは水酸化マグネシウムを５重量％以上含有する不
燃性層である特許請求の範囲第１項または第２項記載の
不燃性石膏 ボード原紙。[Claims] 1. A gypsum board base paper with a multilayer structure in which gypsum layers are laminated to form a gypsum board, in which the surface layer of the gypsum board base paper is composed of a noncombustible layer mainly composed of inorganic powder that does not contain asbestos. , a noncombustible gypsum board base paper characterized by a backing layer consisting of a water-absorbing paper stock layer. 2. In a gypsum board base paper with a multilayer structure in which gypsum layers are laminated to form a gypsum board, the surface layer of the gypsum board base paper is composed of a noncombustible layer mainly composed of inorganic powder that does not contain asbestos, and the back layer is water absorbent. A noncombustible gypsum board base paper comprising a paper stock layer, and an intermediate layer consisting of a non-water-absorbing paper stock layer. 3. The noncombustible gypsum board base paper according to claim 1 or 2, wherein the noncombustible layer mainly composed of inorganic powder is a noncombustible layer containing 5% by weight or more of aluminum hydroxide or magnesium hydroxide. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28337387A JPH01132899A (en) | 1987-11-10 | 1987-11-10 | Incombustible gypsum board base paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28337387A JPH01132899A (en) | 1987-11-10 | 1987-11-10 | Incombustible gypsum board base paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132899A true JPH01132899A (en) | 1989-05-25 |
Family
ID=17664661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28337387A Pending JPH01132899A (en) | 1987-11-10 | 1987-11-10 | Incombustible gypsum board base paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132899A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10377108B2 (en) * | 2012-02-17 | 2019-08-13 | United States Gypsum Company | Gypsum products with high efficiency heat sink additives |
| WO2023037857A1 (en) * | 2021-09-09 | 2023-03-16 | 凸版印刷株式会社 | Self-extinguishing building material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5158414A (en) * | 1974-11-20 | 1976-05-21 | Yoshino Gypsum Co | SETSUKOBOODOYOGENSHI |
| JPS5313557B2 (en) * | 1975-04-15 | 1978-05-11 | ||
| JPS5393557A (en) * | 1977-01-24 | 1978-08-16 | Masakatsu Makino | Stone material rotary machine |
| JPS5347105B2 (en) * | 1973-07-06 | 1978-12-19 | ||
| JPS59157500A (en) * | 1983-02-28 | 1984-09-06 | 児島 安喜 | Method of filling up drilled hole for blasting |
| JPS59157397A (en) * | 1983-02-26 | 1984-09-06 | 新富士製紙株式会社 | Paperboard for gypsum board |
-
1987
- 1987-11-10 JP JP28337387A patent/JPH01132899A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5347105B2 (en) * | 1973-07-06 | 1978-12-19 | ||
| JPS5158414A (en) * | 1974-11-20 | 1976-05-21 | Yoshino Gypsum Co | SETSUKOBOODOYOGENSHI |
| JPS5313557B2 (en) * | 1975-04-15 | 1978-05-11 | ||
| JPS5393557A (en) * | 1977-01-24 | 1978-08-16 | Masakatsu Makino | Stone material rotary machine |
| JPS59157397A (en) * | 1983-02-26 | 1984-09-06 | 新富士製紙株式会社 | Paperboard for gypsum board |
| JPS59157500A (en) * | 1983-02-28 | 1984-09-06 | 児島 安喜 | Method of filling up drilled hole for blasting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10377108B2 (en) * | 2012-02-17 | 2019-08-13 | United States Gypsum Company | Gypsum products with high efficiency heat sink additives |
| WO2023037857A1 (en) * | 2021-09-09 | 2023-03-16 | 凸版印刷株式会社 | Self-extinguishing building material |
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