JPS63227899A - Base paper for gypsum board - Google Patents
Base paper for gypsum boardInfo
- Publication number
- JPS63227899A JPS63227899A JP5771887A JP5771887A JPS63227899A JP S63227899 A JPS63227899 A JP S63227899A JP 5771887 A JP5771887 A JP 5771887A JP 5771887 A JP5771887 A JP 5771887A JP S63227899 A JPS63227899 A JP S63227899A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum board
- base paper
- mold
- water
- added
- 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 description 36
- 229910052602 gypsum Inorganic materials 0.000 title claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 229920002472 Starch Polymers 0.000 claims description 12
- 235000019698 starch Nutrition 0.000 claims description 12
- 239000008107 starch Substances 0.000 claims description 12
- 239000000123 paper Substances 0.000 description 32
- 230000000855 fungicidal effect Effects 0.000 description 10
- 239000000417 fungicide Substances 0.000 description 9
- 239000005871 repellent Substances 0.000 description 7
- 230000002940 repellent Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000010451 perlite Substances 0.000 description 3
- 235000019362 perlite Nutrition 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- LYOFHYLVYHTGBK-UHFFFAOYSA-N 4-chloro-1,5-dimethylcyclohexa-2,4-dien-1-ol Chemical compound CC1=C(Cl)C=CC(C)(O)C1 LYOFHYLVYHTGBK-UHFFFAOYSA-N 0.000 description 1
- RQCLKJICDPMGDH-UHFFFAOYSA-N 7-(dichloromethyl)-2-fluoro-3-sulfanylideneisoindol-1-one Chemical compound S=C1N(F)C(=O)C2=C1C=CC=C2C(Cl)Cl RQCLKJICDPMGDH-UHFFFAOYSA-N 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 nitrogen-containing sulfur type compound Chemical class 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- WJCNZQLZVWNLKY-UHFFFAOYSA-N thiabendazole Chemical compound S1C=NC(C=2NC3=CC=CC=C3N=2)=C1 WJCNZQLZVWNLKY-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔技術分野〕
この発明は、防かび性を有する石膏ボード用原紙に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a base paper for gypsum board having mildew resistance.
通常の石膏ボードは、焼石膏を主原料とし、これに軽量
性や弾性を付与するために鋸屑やパーライト、繊維等を
混入し、この混合物を水練りして両面に石膏ボード用原
紙を密着させて板状に成形し硬化したものが一般的であ
る（例えば■地人書館、昭和４７年９月１５日発行、狩
野春−監修・著、「建築材料ハンドブック」、１１２〜
１１４・ 頁）。Ordinary gypsum board uses calcined gypsum as its main raw material. Sawdust, perlite, fibers, etc. are mixed into it to give it lightness and elasticity. This mixture is kneaded with water and plasterboard base paper is adhered to both sides. They are generally molded into a plate shape and hardened (for example, ■Jijin Shokan, published September 15, 1971, supervised and authored by Haru Kano, ``Architectural Materials Handbook'', 112-
114 pages).
この石膏ボードは建築用ボードとして比較的安価である
ところから、住宅等の建物の内装材や下地材として幅広
く使用されている。Since this gypsum board is relatively inexpensive as a building board, it is widely used as an interior material and base material for buildings such as houses.
しかしながら、石膏ボードは軽量でかつ伸縮性が低く、
防火性、遮音性、断熱性、防虫性、防鼠性が高いという
長所がある反面、吸水性に高み、かびが発生しやすいと
いう問題があった。However, gypsum board is lightweight and has low elasticity.
Although it has the advantage of being highly fire retardant, sound insulating, heat insulating, insect repellent, and rodent repellent, it has the problem of being highly water absorbent and prone to mold growth.
このため、石膏ボード用原紙に防かび剤を塗布して防か
び効果を付与することが提案されたが、かびの栄養源と
なる澱粉添加量や吸水量が高いと、防かび効果が充分で
なかった。For this reason, it has been proposed to apply a fungicide to the base paper for gypsum board to give it a fungicidal effect, but if the amount of starch added and water absorption, which is a nutrient source for mold, is high, the antifungal effect may not be sufficient. There wasn't.
この発明の目的は、防かび性を向上させた石膏ボード用
原紙を提供することである。An object of the present invention is to provide a base paper for gypsum board with improved mildew resistance.
この発明の石膏ボード用原紙は、澱粉添加量が０．７％
以下でかつ吸水率が１分間で４２〜４７％であることを
特徴とするものである。The base paper for gypsum board of this invention has a starch content of 0.7%.
or less, and the water absorption rate is 42 to 47% per minute.
この発明によれば、石膏ボード用原紙の澱粉添加量を０
．７％以下にするとともに吸水率を１分間で４２〜４７
％にしたので、かびの栄養源となる澱粉や水分が抑えら
れ、その結果かびの発生を抑制し石膏ボードの防かび効
果を著しく高めることができる。According to this invention, the amount of starch added to base paper for gypsum board can be reduced to 0.
．． Reduce the water absorption rate to 7% or less and increase the water absorption rate to 42 to 47 per minute.
%, starch and moisture, which are nutritional sources for mold, are suppressed, and as a result, the growth of mold can be suppressed and the mold-preventing effect of gypsum board can be significantly enhanced.
この発明の石膏ボード用原紙は、古紙、砕木パルプ、未
ざらし亜硫酸バルブ等を主原料とし、これらをすき合わ
せてつくられる埋置２３０〜３００ｇ／ｒｄ程度の板紙
である。製造にあたっては、前記主原料をそれぞれ調合
し、さらにこれにｔａ水剤を混ぜ合わせたのち、これら
の懸濁液にバインダーとして澱粉液を添加して抄造する
。抄造後、必要に応じて防かび剤を表面に塗布して仕上
げる。The base paper for gypsum board of this invention is a paperboard with a burial capacity of about 230 to 300 g/rd, which is made by plating together waste paper, ground wood pulp, unbleached sulfite valve, etc. as main raw materials. In production, the above-mentioned main raw materials are prepared respectively, a TA solution is further mixed therein, and then a starch solution is added as a binder to these suspensions to form paper. After papermaking, if necessary, apply a fungicide to the surface for finishing.
石膏ボード用原紙に澱粉を添加するのはバインダーとし
てバルブ繊維の相互間を接着し強度を高めるためである
。澱粉添加量は全体の０．７％以下であるのが好ましく
、これより添加量が多くなると防かび性に劣るようにな
る。Starch is added to base paper for gypsum board in order to act as a binder and bond the valve fibers together to increase strength. The amount of starch added is preferably 0.7% or less of the total, and if the amount added is greater than this, the mildew resistance will be poor.
また、石膏ボード用原紙の吸水率を抑制するため原紙の
製造時に撥水剤が添加されるが、このとき使用される撥
水剤としては、例えばマレイン化ロジン石鹸やロジン石
鹸１万油樹脂等のサイズ剤があげられる。また製造時の
撥水剤添加に代えて、あるいは撥水剤の添加と共に、抄
造後、他の撥水剤（例えばシリコーン樹脂等）を塗布ま
たは含浸させるよ゛うにしてもよい、ｔ８水剤の添加量
は石膏ボード用原紙の吸水率が１分間で４２〜４７％と
なるように調整するのが好ましく、吸水率がこの範囲よ
り大なるときは防かび性に劣るようになる。Additionally, in order to suppress the water absorption of base paper for plasterboard, water repellents are added during the production of base paper. Examples of water repellents used at this time include maleated rosin soap and rosin soap 10,000 oil resin. Sizing agents include: In addition, instead of adding a water repellent during manufacturing, or in addition to adding a water repellent, another water repellent (for example, silicone resin, etc.) may be applied or impregnated after papermaking. It is preferable to adjust the amount of addition so that the water absorption rate of the base paper for gypsum board is 42 to 47% per minute; if the water absorption rate is greater than this range, the mildew resistance will be poor.
さらに、このようにして形成した石膏ボード用原紙に防
かび剤を塗布することにより防かび効果をより一層高め
ることができる。塗布する防かび剤としては、例えばＴ
ＢＺ （２（４−チアゾリール）ベンズイミダゾール〕
、ｐ−クロルメタキシレノール（三菱瓦斯化学■製の商
品名ｐｃＭＸ）。Furthermore, by applying a fungicide to the base paper for gypsum board formed in this way, the fungicide effect can be further enhanced. As the fungicide to be applied, for example, T
BZ (2(4-thiazolyl)benzimidazole)
, p-chlormetaxylenol (trade name pcMX manufactured by Mitsubishi Gas Chemical Company).
Ｎ−フルオロジクロルメチルチオフタルイミド（バイエ
ル社製の商品名ブリベントールＡ３）。N-Fluorodichloromethylthiophthalimide (trade name: Briventol A3, manufactured by Bayer AG).
ベンズイミダゾール系、含窒素硫黄系化合物混合（武田
薬品■製の商品名コートサイド）等が使用可能である。Benzimidazole type, nitrogen-containing sulfur type compound mixture (trade name: Courtside, manufactured by Takeda Pharmaceutical Co., Ltd.), etc. can be used.
また原紙の製造工程中の随所にこれらの防カビ剤を添加
するようにしてもよい。Furthermore, these antifungal agents may be added at various points during the manufacturing process of base paper.
石膏ボードは主原料の焼石膏に、鋸屑やバルブ、ガラス
繊維、パーライト等を混入し、この混合物を水練りした
のち、混合物をこの発明にかかる石膏ボード用原紙の上
面に流しこみ、石膏ボード用原紙で被覆して成形ロール
で一定の厚さに成形し、硬化および乾燥工程を経て製造
される。Gypsum board is made by mixing the main raw material, calcined gypsum, with sawdust, bulbs, glass fiber, perlite, etc., kneading this mixture with water, and then pouring the mixture onto the top surface of the base paper for gypsum board according to the present invention. It is manufactured by covering it with base paper, shaping it to a certain thickness with a forming roll, and going through a curing and drying process.
第１図はこの発明の石膏ボード用原紙を使用した石膏ボ
ードの断面図であり、１および２は石膏ボード用原紙、
３は石膏ボード本体をそれぞれ示している。FIG. 1 is a cross-sectional view of a gypsum board using the base paper for gypsum board of the present invention, and 1 and 2 are the base paper for gypsum board,
3 indicates the gypsum board body.
次に実施例をあげてこの発明の石膏ボード用原紙を詳細
に説明する。Next, the base paper for gypsum board of the present invention will be explained in detail with reference to Examples.
実施例： 古紙、砕木パルプ、未ざらし亜硫酸バルブ等
の主原料に市販の撥水剤の所定量を添加して調合し、つ
いで澱粉を０．７％以下の添加量で添加して抄造し、坪
量約２３０〜３００ ｇ／ａｔの石膏ボード用原紙を得
た。この原紙から市販の防かび剤を塗布量１ ｇ／ｒｄ
で塗布したものと、塗布しないものとを作成した。Example: A predetermined amount of a commercially available water repellent is added to main raw materials such as waste paper, ground wood pulp, and unbleached sulfite valves, and then starch is added in an amount of 0.7% or less to form paper. A base paper for gypsum board having a basis weight of about 230 to 300 g/at was obtained. Apply a commercially available fungicide to this base paper in an amount of 1 g/rd.
One coated and one without coating were created.
一方、焼石膏に、鋸屑やバルブ、ガラス繊維。On the other hand, plaster of Paris, sawdust, bulbs, and glass fiber.
パーライト等を混入し、この混合物を水練りしたのち、
混合物を裏面用の石膏ボード用原紙（防かび剤を塗布し
ないもの）の上面に流しこみ、さらにその上面に表面用
の石膏ボード用原紙（防かび剤を塗布したもの）を重ね
て被覆し成形ロールで一定の厚さに成形し、硬化および
乾燥させて石膏ボードを得た。After mixing perlite etc. and kneading this mixture with water,
Pour the mixture onto the top of the base paper for gypsum board (not coated with a fungicide) for the back side, then layer the base paper for gypsum board for the front side (coated with a fungicide) on top of that to cover and form. It was rolled to a certain thickness, hardened and dried to obtain a gypsum board.
比較例＝１８水剤を加えずかつ澱粉の添加量を全体の２
．３％にしたほかは実施例と同様にして石膏ボードを得
た。Comparative example = 18 No water agent was added and the amount of starch added was 2
．． A gypsum board was obtained in the same manner as in the example except that the concentration was changed to 3%.
これらの実施例および比較例で得た石膏ボード用原紙に
ついて吸水率測定およびかび抵抗性試験を行った。その
試験結果を次表に示す。なお、吸水率の測定は、寸法が
２９ａａＸ５ｃｍ＋の試験片を３０℃の恒温水槽中に表
面を上にして１５秒間または１分間浮かべたのち付着し
た余剰水を振り切って重量を測定し、次式により求めた
。The base papers for gypsum board obtained in these Examples and Comparative Examples were subjected to water absorption measurements and mold resistance tests. The test results are shown in the table below. The water absorption rate was measured by floating a test piece with dimensions of 29aa x 5cm+ in a constant temperature water bath at 30℃ for 15 seconds or 1 minute with the surface facing up, shaking off the excess water that adhered to it, and measuring the weight using the following formula. I asked for it.
また、防かび剤の塗布量を１ ｇ／ｒｄにして防かび効
果を測定した。In addition, the fungicidal effect was measured using a coating amount of the fungicidal agent of 1 g/rd.
表に示すように、吸水率は実施例の原紙のほうが比較例
のものよりもはるかに少なかった。また、実施例の原紙
のみでは６日目でかびが発生したのに対して、比較例で
は２日目でかびが発生した。As shown in the table, the water absorption rate of the base paper of the example was much lower than that of the comparative example. In addition, mold developed on the base paper of the example on the 6th day, whereas mold developed on the 2nd day in the comparative example.
さらに、実施例の石膏ボード用原紙に防かび剤を塗布し
た場合には２００日目かびが発生したのに対して、比較
例のものでは１００日目かびが発生した。Further, when the moldproofing agent was applied to the base paper for gypsum board in the example, mold was generated on the 200th day, whereas mold was generated on the 100th day in the comparative example.
これらの試験結果から、澱粉添加量および吸水率がかび
発生に大きく関与していることが明らかであり、実施例
の石膏ボード用原紙は比較例のそれよりも防かび効果が
はるかに高くなっていることがわかる。From these test results, it is clear that the amount of starch added and the water absorption rate are greatly involved in mold generation, and the gypsum board base paper of the example has a much higher mold prevention effect than that of the comparative example. I know that there is.
この発明の石膏ボード用原紙によれば、石膏ボード用原
紙の澱粉添加量を０．７％以下にするとともに吸水率を
１分間で４２〜４７％にしたので、かびの栄養源となる
澱粉や水分が低く抑えられ、その結果かびの発生を抑制
し石膏ボードの防かび効果を著しく高めることができる
という効果がある。According to the base paper for gypsum board of this invention, the amount of starch added to the base paper for gypsum board is 0.7% or less, and the water absorption rate is 42 to 47% per minute. This has the effect of suppressing moisture content to a low level, thereby suppressing the growth of mold and significantly increasing the mold-preventing effect of gypsum board.
第１図はこの発明の一実施例の断面図である。 １．２・・・石膏ボード用原紙 FIG. 1 is a sectional view of one embodiment of the present invention. 1.2...Gypsum board base paper
Claims (1)
〜４７％であることを特徴とする石膏ボード用原紙。The amount of starch added is 0.7% or less and the water absorption rate is 42 in 1 minute.
A base paper for gypsum board characterized by having a content of 47%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5771887A JPS63227899A (en) | 1987-03-12 | 1987-03-12 | Base paper for gypsum board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5771887A JPS63227899A (en) | 1987-03-12 | 1987-03-12 | Base paper for gypsum board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63227899A true JPS63227899A (en) | 1988-09-22 |
Family
ID=13063725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5771887A Pending JPS63227899A (en) | 1987-03-12 | 1987-03-12 | Base paper for gypsum board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63227899A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008155979A1 (en) * | 2007-06-19 | 2008-12-24 | Yoshino Gypsum Co., Ltd. | Mildewproof plasterboard |
| JP2016532788A (en) * | 2013-07-26 | 2016-10-20 | ユナイテッド・ステイツ・ジプサム・カンパニー | Anti-mold paper and anti-mold gypsum panel, antibacterial paper coating method and related methods |
-
1987
- 1987-03-12 JP JP5771887A patent/JPS63227899A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008155979A1 (en) * | 2007-06-19 | 2008-12-24 | Yoshino Gypsum Co., Ltd. | Mildewproof plasterboard |
| JP5520603B2 (en) * | 2007-06-19 | 2014-06-11 | 吉野石膏株式会社 | Gypsum board with antifungal properties |
| JP2016532788A (en) * | 2013-07-26 | 2016-10-20 | ユナイテッド・ステイツ・ジプサム・カンパニー | Anti-mold paper and anti-mold gypsum panel, antibacterial paper coating method and related methods |
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