JPH0688821B2 - Extrusion molding method for inorganic products - Google Patents
Extrusion molding method for inorganic productsInfo
- Publication number
- JPH0688821B2 JPH0688821B2 JP4918589A JP4918589A JPH0688821B2 JP H0688821 B2 JPH0688821 B2 JP H0688821B2 JP 4918589 A JP4918589 A JP 4918589A JP 4918589 A JP4918589 A JP 4918589A JP H0688821 B2 JPH0688821 B2 JP H0688821B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- waste paper
- extrusion molding
- softwood
- hardwood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/241—Paper, e.g. waste paper; Paper pulp
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は無機質製品の押出成形方法に関する。TECHNICAL FIELD The present invention relates to an extrusion molding method for an inorganic product.
従来、セメント等水硬性原料を主成分とする無機質製品
の補強繊維である石綿は、公害原因となることより使用
の制限、ないしは全廃が強く要請され、これに代わる補
強繊維が種々模索されている。Conventionally, asbestos, which is a reinforcing fiber for inorganic products mainly composed of hydraulic raw materials such as cement, is strongly required to be restricted or completely abolished because it causes pollution, and various reinforcing fibers are being sought to replace it. .
この石綿代替繊維として、パルプ繊維がかなり有効であ
り、その実施技術が種々提案されている。As the asbestos substitute fiber, pulp fiber is quite effective, and various techniques for implementing it have been proposed.
このような観点より、本願出願人は、パルプ繊維として
針葉樹及び広葉樹から成るパルプを混合することにより
両者の特質を生かし、補強効果に優れる無機質製品の押
出成形方法を先に提案した（特開昭63−256555号）。From this point of view, the present applicant has previously proposed an extrusion molding method of an inorganic product which is excellent in the reinforcing effect by mixing the pulp composed of softwood and hardwood as pulp fibers and making the best use of the characteristics of both. 63-256555).
ところで、上記針葉樹及び広葉樹パルプを併用する場
合、バージンパルプを使用するのはコスト高となる上、
省資源の観点よりも適当でない問題があり、さらに、こ
れら各種パルプに適応した叩解、開繊設備を併設する必
要もあり、結局製造コストが非常に高価となる問題があ
った。By the way, when the softwood and hardwood pulp are used in combination, it is costly to use virgin pulp.
There is a problem in that it is not appropriate from the viewpoint of resource saving, and further, it is necessary to install beating and opening equipment adapted to these various pulps, resulting in a problem that the manufacturing cost becomes very high in the end.
また、針葉樹パルプと広葉樹パルプとを混合した場合、
同種のパルプ同志が互いにからみ合ってファイバーボー
ル化する、いわゆる「ダマ」の発生が有り、混合比率が
設計通りに安定しない問題もある。Also, when mixing softwood pulp and hardwood pulp,
There is a so-called "damage" in which pulps of the same kind are entangled with each other to form fiber balls, and there is also a problem that the mixing ratio is not stable as designed.
この発明は上記欠点に鑑み、針葉樹、広葉樹パルプの混
合による利点を全く損なうことなく、しかも均一に、か
つ、容易に添加混合でき、もって充分な強度を有する無
機質製品の押出成形方法を得ることを目的としてなされ
たものである。In view of the above-mentioned drawbacks, the present invention is to obtain an extrusion molding method of an inorganic product having sufficient strength without impairing the advantages of mixing softwood and hardwood pulp, and evenly, and easily adding and mixing. It was done for the purpose.
即ち、この発明の無機質製品の押出成形方法は、針葉樹
パルプより成る故紙と広葉樹パルプより成る故紙とを夫
々湿式解繊し、得たパルプ材を、針葉樹パルプ対広葉樹
パルプを９対１〜５対５に配合して得た故紙パルプを補
強繊維とし、セメント等水硬性原料、珪石粉、及び押出
助剤等の常法配合材料と混合し、水を加えて混練した後
押出成形することを特徴とすることを特徴とするもので
ある。That is, the method of extrusion molding an inorganic product of the present invention is to wet defibrate a waste paper made of softwood pulp and a waste paper made of hardwood pulp, respectively, and obtain the pulp material from 9 to 1 to 5 pairs of softwood pulp and hardwood pulp. The waste paper pulp obtained by blending in No. 5 is used as a reinforcing fiber, and is mixed with a hydraulic raw material such as cement, silica stone powder, and a commonly used blending material such as an extrusion aid, and water is added and kneaded, followed by extrusion molding. It is characterized by
この発明におけるパルプはすべて故紙を原料としてお
り、針葉樹パルプより成る故紙として、クラフト紙、ダ
ンボール紙、通常の事務用紙あるいはコンピュータ用パ
ンチカード等が使用され、広葉樹パルプより成る故紙と
してノンカーボン紙、ファクシミリ用感熱紙などが使用
される。The pulp in this invention is all made from waste paper, and as the waste paper made of softwood pulp, kraft paper, cardboard paper, ordinary office paper or punch cards for computers are used, and non-carbon paper, facsimile as waste paper made of hardwood pulp. Thermal paper is used.
これらの故紙は、針葉樹系と広葉樹系とを所定配合とし
た後、パルパー内でスラリー状に叩解し、かつ混合し、
抄紙機により抄造し、シート状にした後、乾燥して水分
20％程度までにしたもの、あるいは抄紙せず脱水して水
分を50％以下にしたものが原材料として使用される。These waste papers were prepared by mixing a softwood system and a hardwood system into a predetermined composition, beaten into a slurry in a pulper, and mixed,
Paper is made with a paper machine, made into sheets, and then dried to remove water.
The raw material is made up to about 20%, or dehydrated without paper making to have a water content of 50% or less.
なお、乾燥したものを用いるのは押出成形において、押
出原料の水分コントロールが重要な要素となる為水分の
変動を無くすためである。It should be noted that the dried product is used in order to eliminate the fluctuation of water content in extrusion molding since the water content control of the extrusion raw material is an important factor.
また、パルプの分散性は湿式混合に較べ乾式混合の方が
はるかに良いことにもよる。Also, the dispersibility of pulp is much better in dry mixing than in wet mixing.
そして、使用に際しては上記シート状原料を乾式解繊機
を用いて解繊し、これをセメント配合物に常法により配
合し混合した後、適当量の水を加えて混練し押出成形す
る。When used, the above sheet-shaped raw material is defibrated using a dry defibrating machine, and this is blended with a cement mixture by a conventional method and mixed, and then an appropriate amount of water is added and kneaded and extrusion molded.
上記において、パルプ繊維は故紙を原料とするから、繊
維長及び径が大略均一化され、従ってセメント原料との
混合時にファイバーボール化してしまうのがほぼぼ完全
に防止でき、針葉樹と広葉樹が適当に混合され繊維長の
分布が均一化され、セメント等の他の配合原料とも良く
なじむ。In the above, since the pulp fiber is made from waste paper as a raw material, the fiber length and diameter are almost uniform, and therefore it is almost completely possible to prevent fiber balls from being formed during mixing with the cement raw material, and softwood and hardwood are suitable. When mixed, the fiber length distribution is made uniform, and is well compatible with other compounding raw materials such as cement.
また、叩解処理されるパルプ原料はいずれも故紙を原料
とするから、叩解機は一種の装置で足りる。Further, since all pulp raw materials to be beaten are made from waste paper, a beating machine is sufficient.
本発明において、故紙パルプとして針葉樹と広葉樹のも
のを併用するのは、一般に針葉樹パルプは、繊維が太く
て長く、従ってその繊維形態により成形体の曲げ強度向
上が図られ、広葉樹パルプは繊維が前者に較べ細いた
め、セメント等の他の粉状原料とのなじみが良く、セメ
ント配合物の押出性能を改善する作用を行なう。In the present invention, a combination of softwood and hardwood as the waste paper pulp is used in general because softwood pulp has thick and long fibers, and therefore the bending strength of the molded body is improved by the fiber morphology. Since it is thinner than the above, it is well compatible with other powdery raw materials such as cement, and acts to improve the extrusion performance of the cement mixture.
この両者の組み合わせにより互いの欠点を補い補強繊維
としての性能向上を図る。By combining these two, the drawbacks of each other are complemented to improve the performance of the reinforcing fiber.
さらに、パルパーで叩解時にディスクリファイナー等を
用いると繊維表面フィブリルル化出来るのでさらに都合
が良い。Further, it is more convenient to use a disc refiner or the like at the time of beating with a pulper, because the fiber surface can be fibrillated.
上記繊維の配合比を針葉樹パルプ対広葉樹パルプ＝9:1
〜5:5とするのは、広葉樹パルプの添加量が針葉樹パル
プに対し、１割より少なくと押出性改良の効果がなく、
また５割より多くすると、針葉樹パルプの相対的添加量
の減少により補強効果が期待出来なくなる。The blending ratio of the above fibers is as follows: softwood pulp to hardwood pulp = 9: 1
The reason for setting to 5: 5 is that the addition amount of the hardwood pulp is less than 10% with respect to the softwood pulp, there is no effect of improving the extrudability,
On the other hand, if it is more than 50%, the reinforcing effect cannot be expected due to the decrease in the relative amount of softwood pulp added.
他の押出成形用配合原料としては、通常と同様であり特
に記する点はない。Other compounding raw materials for extrusion molding are the same as usual and there is no particular point to note.
次に、この発明の実施例を説明する。 Next, an embodiment of the present invention will be described.
針葉樹パルプを原料とする故紙としてクラフト反故紙
を、広葉樹パルプを原料とする故紙としてノンカーボン
反故紙を用意し、これらを針葉樹対広葉樹の比を6:4と
なるようパルパーへ供給し、バッチ処理にて、スラリー
状に叩解し、混合したものを抄紙機によりシート状に抄
造し、水分20％以下となるまで乾燥した。Prepare kraft waste paper as a waste paper made from softwood pulp and non-carbon waste paper as a waste paper made from hardwood pulp, and supply them to a pulper with a ratio of softwood to hardwood of 6: 4, and perform batch processing. At that time, the mixture was beaten into a slurry and mixed to form a sheet with a paper machine, and dried until the water content was 20% or less.
次に、この発明のパルプシートを乾式パルプ解繊機を用
いて解繊し、下表に示す配合として、セメントスラリー
を作り、厚さ2cm、幅25cmの板状体を押出成形し、長さ5
0cm毎に裁断して試験片を得た。Next, the pulp sheet of the present invention is defibrated using a dry pulp defibrating machine, as a composition shown in the following table, cement slurry is prepared, and a plate-like body having a thickness of 2 cm and a width of 25 cm is extruded and has a length of 5
A test piece was obtained by cutting every 0 cm.
なお、上表においては、解繊能率は、パルプシートを開
繊機により開繊した時の能率を示したもの、解繊状態は
充分に単繊維状にされたものを良好とした。 In the above table, the defibration efficiency indicates the efficiency when the pulp sheet is opened by the fiber opening machine, and the defibration state is considered to be sufficiently single fiber.
また、比較例は、故紙パルプでなくバージンパルプで針
葉樹パルプ及び広葉樹パルプを同様に混合したものを示
す。In addition, the comparative example shows a mixture of softwood pulp and hardwood pulp in the same manner with virgin pulp instead of waste paper pulp.
次いで、上記試験片をオートクレーブにより養生硬化し
組織内のパルプ偏折と曲げ強度試験を行なったところ、
表下欄に示す結果を得た。Then, the test piece was subjected to curing curing by an autoclave and subjected to pulp bias in the structure and bending strength test,
The results shown in the lower column of the table were obtained.
表の試験結果より明らかなように、バージンパルプを配
合して押出成形したものに比し、パルプ偏折が無く、ま
た曲げ強度も向上しているのが確認された。As is clear from the test results in the table, it was confirmed that there was no pulp unevenness and that the bending strength was improved as compared with the one obtained by mixing and extruding virgin pulp.
この発明は以上説明したように、パルプ繊維として故紙
パルプを用いたので、針葉樹、広葉樹系を混合してもフ
ァイバーボール化を生じることなく、均一混合でき、強
度に優れた製品が製造できるのである。As described above, since the waste paper pulp is used as the pulp fiber in the present invention, even if the softwood and hardwood systems are mixed, fiberballing does not occur, uniform mixing can be performed, and a product having excellent strength can be manufactured. .
また、原料として故紙を使用するので資源の有効な利用
も図れるなどの効果を有する。In addition, since waste paper is used as a raw material, there is an effect that resources can be effectively used.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 16:08 2102−4Ｇ 24:38） Ｚ 2102−4Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C04B 16:08 2102-4G 24:38) Z 2102-4G
Claims (1)
より成る故紙とを夫々湿式解繊し、得たパルプ材を、針
葉樹パルプ対広葉樹パルプを９対１〜５対５に配合して
得た故紙パルプを補強繊維とし、セメント等水硬性原
料、珪石粉、及び押出助剤等の常法配合材料と混合し、
水を加えて混練した後押出成形することを特徴とする無
機質製品の押出成形方法。1. A waste paper obtained by wet defibrating a waste paper made of softwood pulp and a waste paper made of hardwood pulp, respectively, and mixing the obtained pulp material with 9: 1 to 5: 5 softwood pulp to hardwood pulp. Pulp is used as a reinforcing fiber, mixed with hydraulic raw materials such as cement, silica stone powder, and conventional compounding materials such as extrusion aids,
An extrusion molding method for an inorganic product, comprising adding water, kneading, and then extrusion molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4918589A JPH0688821B2 (en) | 1989-03-01 | 1989-03-01 | Extrusion molding method for inorganic products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4918589A JPH0688821B2 (en) | 1989-03-01 | 1989-03-01 | Extrusion molding method for inorganic products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02229747A JPH02229747A (en) | 1990-09-12 |
| JPH0688821B2 true JPH0688821B2 (en) | 1994-11-09 |
Family
ID=12823978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4918589A Expired - Fee Related JPH0688821B2 (en) | 1989-03-01 | 1989-03-01 | Extrusion molding method for inorganic products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0688821B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9879361B2 (en) | 2012-08-24 | 2018-01-30 | Domtar Paper Company, Llc | Surface enhanced pulp fibers, methods of making surface enhanced pulp fibers, products incorporating surface enhanced pulp fibers, and methods of making products incorporating surface enhanced pulp fibers |
| MX2016010821A (en) | 2014-02-21 | 2017-05-09 | Domtar Paper Co Llc | Surface enhanced pulp fibers in fiber cement. |
| AU2015218818B2 (en) | 2014-02-21 | 2017-07-06 | Domtar Paper Company Llc | Surface enhanced pulp fibers at a substrate surface |
| US11473245B2 (en) | 2016-08-01 | 2022-10-18 | Domtar Paper Company Llc | Surface enhanced pulp fibers at a substrate surface |
| CA3041057A1 (en) | 2016-10-18 | 2018-04-26 | Domtar Paper Company, Llc | Method for production of filler loaded surface enhanced pulp fibers |
| CN107572964A (en) * | 2017-10-12 | 2018-01-12 | 贺州学院 | One kind sound insulation sheet material and preparation method thereof |
| CA3088962A1 (en) | 2018-02-05 | 2019-08-08 | Harshad PANDE | Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same |
| CA3134990A1 (en) | 2019-03-26 | 2020-10-01 | Domtar Paper Company, Llc | Paper products subjected to a surface treatment comprising enzyme-treated surface enhanced pulp fibers and methods of making the same |
-
1989
- 1989-03-01 JP JP4918589A patent/JPH0688821B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02229747A (en) | 1990-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5573640A (en) | Paper made with cellulose fibers having an inner core of cellulose acetate | |
| EP0027705B1 (en) | Starch bound non-asbestos paper | |
| US4448639A (en) | Mineral fiber-containing paper for the production of gypsum wallboard product prepared therewith | |
| JPH0688821B2 (en) | Extrusion molding method for inorganic products | |
| US3300372A (en) | Fire-resistant building board and process | |
| GB2137977A (en) | Producing Inorganic Hardened Compositions | |
| JP2689171B2 (en) | Manufacturing method of hydraulic material molded body | |
| US4692211A (en) | High strength, cellulosic-gel-containing kraft paper and process for making the same | |
| US5726111A (en) | Paper/clay and method of preparation | |
| JPS59203747A (en) | Manufacture of inorganic hardened body | |
| JPH0225856B2 (en) | ||
| JPH0238720B2 (en) | ||
| JPS6228499A (en) | Production of mineral fiberboard | |
| GB2130264A (en) | Starch-bound non-asbestos paper | |
| JP3181644B2 (en) | Inorganic cured body | |
| JP2688156B2 (en) | Fiber-reinforced inorganic extruded product and method for producing the same | |
| JPH0735276B2 (en) | Method for producing wood-containing gypsum board | |
| JP2752281B2 (en) | Manufacturing method of fiber reinforced cement board | |
| JP2561465B2 (en) | A method for mixing pulp fibers in inorganic extrusion. | |
| JPS6148487A (en) | Manufacture of inorganic hardened body | |
| JPH082956A (en) | Inorganic board and its production | |
| JPS6136147A (en) | Manufacture of inorganic hardened formed body | |
| JPH0138065B2 (en) | ||
| JPS60190322A (en) | Manufacture of wooden product by extrusion molding | |
| JPS616167A (en) | Hydraulic inorganic papered product and manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |