JPH02221485A - Production of pulp with low freeness - Google Patents
Production of pulp with low freenessInfo
- Publication number
- JPH02221485A JPH02221485A JP4184989A JP4184989A JPH02221485A JP H02221485 A JPH02221485 A JP H02221485A JP 4184989 A JP4184989 A JP 4184989A JP 4184989 A JP4184989 A JP 4184989A JP H02221485 A JPH02221485 A JP H02221485A
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- freeness
- beating
- synthetic
- low
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000010009 beating Methods 0.000 claims abstract description 35
- 235000013311 vegetables Nutrition 0.000 claims abstract description 22
- 238000009987 spinning Methods 0.000 claims abstract description 12
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 27
- 238000001914 filtration Methods 0.000 claims description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- -1 thick boards Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 206010061592 cardiac fibrillation Diseases 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002600 fibrillogenic effect Effects 0.000 description 3
- 239000004751 flashspun nonwoven Substances 0.000 description 3
- 241001474374 Blennius Species 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 240000000111 Saccharum officinarum Species 0.000 description 2
- 235000007201 Saccharum officinarum Nutrition 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- FFJCNSLCJOQHKM-CLFAGFIQSA-N (z)-1-[(z)-octadec-9-enoxy]octadec-9-ene Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCCCCCCC\C=C/CCCCCCCC FFJCNSLCJOQHKM-CLFAGFIQSA-N 0.000 description 1
- XZIIFPSPUDAGJM-UHFFFAOYSA-N 6-chloro-2-n,2-n-diethylpyrimidine-2,4-diamine Chemical compound CCN(CC)C1=NC(N)=CC(Cl)=N1 XZIIFPSPUDAGJM-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 description 1
- HBRNMIYLJIXXEE-UHFFFAOYSA-N dodecylazanium;acetate Chemical compound CC(O)=O.CCCCCCCCCCCCN HBRNMIYLJIXXEE-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229940070765 laurate Drugs 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 239000004711 α-olefin Substances 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〕
本発明は低濾水性パルプの製法に係り、特にパルプ繊維
の叩解処理が容易にでき、濾水性を下げることのできる
低濾水性パルプの製法に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for producing a low-freeness pulp, and in particular, a method for producing a low-freeness pulp that allows easy beating of pulp fibers and reduces freeness. Regarding.
木材パルプ等の植物繊維性パルプは、紙材、厚板、断熱
材のような一般的な用途以外にアスベスト代替のセメン
ト板抄造助材等に最近使用され、パルプ材には低濾水化
が要求されるようになってきている。そこで、従来、植
物繊維性パルプを用いてその叩解度を高め、その濾水性
を十分に下げるようにしている。In addition to general uses such as paper, thick boards, and insulation materials, vegetable fiber pulp such as wood pulp has recently been used as an auxiliary material for making cement boards as an alternative to asbestos. It is becoming more and more required. Therefore, conventionally, vegetable fiber pulp has been used to increase its beating degree and sufficiently lower its freeness.
叩解処理は、繊維状物を水中等に分散させ、この水中の
分散繊維に圧縮と回復を反復して加えることにより行わ
れる。叩解処理の主な効果は、（１）繊維の膨潤、柔軟
性、及び可塑性の増加（内部フィブリル化） 、（２）
繊維膜の破壊と部分的除去、（３）ひげのような小繊維
の形成と外部表面の増加（外部フィブリル化） 、（４
）繊維の切断による短繊維化等であり、叩解処理の度合
は一般に濾水度で示される。これは叩解度が進むとパル
プ懸濁液のすき網からの濾過速度が低下するためである
。Beating treatment is performed by dispersing the fibrous material in water or the like, and repeatedly applying compression and recovery to the dispersed fibers in the water. The main effects of beating treatment are (1) increased fiber swelling, flexibility, and plasticity (internal fibrillation); (2)
destruction and partial removal of the fiber membrane, (3) formation of whisker-like fibrils and increase in external surface (external fibrillation), (4)
) The degree of beating treatment is generally indicated by freeness. This is because as the degree of beating increases, the rate of filtration of the pulp suspension through the screen decreases.
叩解装置としてはビータ−、コニカル型リファイナー
ドラム型リファイナー、ディスク型リファイナー等があ
る。Beaters and conical refiners are used as beating equipment.
There are drum type refiners, disk type refiners, etc.
ところで、このような従来のパルプの叩解処理に於いて
は、パルプの叩解処理を繰り返してもその濾水性の下が
り方が悪く、パルプの低濾水性の下限値に限界があり、
その値が高値となる不具合がある。また、従来のパルプ
材では、叩解処理によりパルプ繊維の切断が生じ易くパ
ルプ材の強度の低下が起こる。By the way, in such conventional pulp beating treatment, even if the pulp beating treatment is repeated, the freeness of the pulp decreases poorly, and there is a limit to the lower limit of the low freeness of the pulp.
There is a problem where the value becomes high. Furthermore, in conventional pulp materials, pulp fibers are likely to be cut during beating treatment, resulting in a decrease in the strength of the pulp materials.
本発明はこのような事情に鑑みて成されたもので、叩解
処理によって低濾水性のパルプ材を容易にし、且つ従来
のパルプ材より更に低い濾水性を有する低濾水性パルプ
の製法を捷供することを目的としている。The present invention has been made in view of the above circumstances, and provides a method for easily producing a low-freeness pulp material by beating and having a lower freeness than conventional pulp materials. The purpose is to
前記目的を達成するために、本発明に係る低濾水性パル
プの製法は、植物繊維性パルプを９８乃至２重量部と熱
可塑性樹脂を好ましくはフラッシュ紡糸処理して成る合
成パルプ２乃至９８重量部を混合した組成物を叩解して
濾水性を下げたことを特徴とする。In order to achieve the above object, the method for producing a low-freeness pulp according to the present invention is to prepare a synthetic pulp comprising 98 to 2 parts by weight of vegetable fiber pulp and 2 to 98 parts by weight of a thermoplastic resin, preferably flash-spun. It is characterized by lowering the freeness by beating the composition mixed with the above.
（作用〕
本発明によれば、植物繊維性パルプとは植物性繊維を原
料として製造されるパルプであり、木材パルプ、藁パル
プ、海藻パルプ、及び砂糖きびパルプ等も意味する１合
成パルプとは公知な熱可塑性樹脂を原料として製造され
るパルプ状のものであり、合成パルプは熱可塑性樹脂を
フラッシュ紡糸してパルプ状にしたものが好ましい。(Function) According to the present invention, vegetable fibrous pulp is a pulp produced using vegetable fiber as a raw material, and 1.Synthetic pulp is also known as wood pulp, straw pulp, seaweed pulp, sugar cane pulp, etc. Synthetic pulp is preferably a pulp produced by flash-spinning a thermoplastic resin into a pulp.
このような植物繊維性パルプと合成パルプとを本発明に
係る混合範囲内で混合したものを叩解処理すると、植物
繊維性パルプ単独の場合よりも低濾水性のパルプを得る
ことができる。これは、前記合成パルプの外部フィブリ
ル化が促進され、パルプの濾水性が低くなるものと解せ
られる。電子顕微鏡での観察結果によれば、本発明に係
る製造パルプは、合成パルプ表面から無数のひげ状繊維
が突出している。When a mixture of such vegetable fibrous pulp and synthetic pulp within the mixing range according to the present invention is subjected to beating treatment, a pulp with lower freeness than the case of using only the vegetable fibrous pulp can be obtained. This is understood to be because the external fibrillation of the synthetic pulp is promoted and the freeness of the pulp is reduced. According to the results of observation using an electron microscope, the manufactured pulp according to the present invention has numerous whisker-like fibers protruding from the surface of the synthetic pulp.
また、植物繊維性パルプと合成繊維状物とを単に共叩解
したとき、共叩解によって凝塊（ゴロ）が生じやすく、
容易に低濾水性のパルプが得られない場合があるが、フ
ラッシュ紡糸方法による合成パルプの使用は凝塊を生じ
歎く、その結果として叩解処理が容易となり、初めて低
濾水性のパルプが得られる。更に、合成パルプはフラッ
シュ紡糸方法に加えて、ポリビニルアルコール（ＰｖＡ
）で親水化処理することができる。このポリビニルアル
コールの親水化処理は、共叩解の際の凝塊防止に更に好
ましく作用する。In addition, when vegetable fiber pulp and synthetic fibrous material are simply co-beaten, coagulation tends to occur due to the co-beating.
There are cases where it is not easy to obtain a pulp with low freeness, but the use of synthetic pulp using the flash spinning method produces coagulation, which makes the beating process easier and makes it possible to obtain a pulp with low freeness for the first time. . Furthermore, in addition to the flash spinning method, synthetic pulp can also be produced using polyvinyl alcohol (PvA).
) can be treated to make it hydrophilic. This hydrophilic treatment of polyvinyl alcohol has a more favorable effect on preventing agglomeration during co-beating.
以下、本発明に係る好ましい実施！！様を説明する。 Below are preferred implementations of the present invention! ! Explain the situation.
本発明に係る低濾水性パルプの製法に於いて、先ず、植
物繊維性パルプと合成パルプとが混合される。植物繊維
性パルプと合成パルプとの重量混合比（植物繊維性パル
プ／合成パルプ）は９８／２乃至２／９８の範囲にあり
、好ましくは８０／２０乃至２０／８０の範囲である０
本発明の目的である低濾水性のパルプを得るための有効
な混合比は、５０１５０の付近で最大となる。In the method for producing low freeness pulp according to the present invention, first, vegetable fiber pulp and synthetic pulp are mixed. The weight mixing ratio of vegetable fibrous pulp and synthetic pulp (vegetable fibrous pulp/synthetic pulp) is in the range of 98/2 to 2/98, preferably in the range of 80/20 to 20/80.
The effective mixing ratio for obtaining a pulp with low freeness, which is the object of the present invention, is maximum around 50,150.
植物繊維性パルプと合成パルプとの混合は、パルパー等
の離解混合装置を使用して、水懸濁液等で混合される。The vegetable fiber pulp and the synthetic pulp are mixed in an aqueous suspension or the like using a disintegrating mixer such as a pulper.
次に前記混合物は叩解処理される。叩解処理装置は既に
公知のビータ−、ディスクリファイナ−コニカルリファ
イナー、ジヨルダンリファイナー等が使用される。前記
混合物においては、リファイナー等によるパス回数は、
３回数以下で十分な叩解度が達成され、本発明の目的と
する低濾水性パルプが得られる。Next, the mixture is subjected to a beating treatment. As the beating treatment apparatus, a known beater, disc refiner-conical refiner, Jordan refiner, etc. is used. In the mixture, the number of passes through a refiner etc. is as follows:
A sufficient degree of beating can be achieved by repeating the process three times or less, and a low-freeness pulp, which is the object of the present invention, can be obtained.
次に、本発明に係る低濾水性パルプの製法に用いられる
原材料について詳説する。Next, the raw materials used in the method for producing the low freeness pulp according to the present invention will be explained in detail.
籠批四１庄乙止１
本発明に使用される植物繊維性パルプは、植物性繊維を
原料として製造されるパルプ、主に木材パルプ等である
。木材パルプ以外には藁パルプ、海藻パルプ、砂糖きび
パルプ等の天然繊維性パルプを使用することができる。The vegetable fiber pulp used in the present invention is pulp produced using vegetable fibers as raw materials, mainly wood pulp and the like. In addition to wood pulp, natural fiber pulps such as straw pulp, seaweed pulp, and sugarcane pulp can be used.
会迩は９に１
本発明に使用される合成パルプは、熱可望性樹脂を原料
として製造されたパルプ状物をいう、また、合成パルプ
は、フラッシュ紡糸をすることにより製造されるものが
最適である。フラッシュ紡糸方法には次の方法がある。Synthetic pulp used in the present invention refers to a pulp-like material manufactured using a thermoplastic resin as a raw material, and synthetic pulp is one manufactured by flash spinning. Optimal. Flash spinning methods include the following methods.
（１）熱可塑性樹脂の炭化水素溶媒よりなる高温、高圧
の溶液を減圧領域中にフラッシュ放出する方法（特公昭
５５−１０６８３号公報）。(1) A method in which a high temperature, high pressure solution of a hydrocarbon solvent for a thermoplastic resin is flash discharged into a reduced pressure region (Japanese Patent Publication No. 10683/1983).
（２）熱可塑性樹脂のエマルジ阿ン溶液を高温、高圧の
状態で減圧領域中にフラッシュ放出する方法（特公昭５
２−４７０４９号公報）。(2) A method in which an emulsion solution of a thermoplastic resin is flash-discharged into a reduced pressure area at high temperature and high pressure.
2-47049).
その他、溶媒条件を変えた種々の方法があるが、特に（
２）のエマルシヨン・フラッシュ紡糸により製造された
合成パルプが本発明に好適である。また、この合成パル
プ状物質は０．１ ｍ”／ ｇ以上の比表面積を有する
ものであることが好ましい。There are various other methods using different solvent conditions, especially (
Synthetic pulp produced by emulsion flash spinning in 2) is suitable for the present invention. Further, it is preferable that this synthetic pulp-like material has a specific surface area of 0.1 m''/g or more.
この様な合成パルプに使用される熱可塑性樹脂としては
、ポリオレフィン、ポリエステル、ポリアクリロニトリ
ル、その他の熱可塑性樹脂を例示することが出来る。特
に、ポリエチレン、ポリプロピレン、エチレン−プロピ
レン共重合体、エチレン−１−ブテン共重合体、エチレ
ン−４−メチ／Ｌ／−１−ヘアｆン共重合体等のエチレ
ン及びα−オレフィン樹脂の１種または２種以上から得
られるポリオレフィンが、低濾水性を著しく改良できる
点で好ましい。Examples of thermoplastic resins used in such synthetic pulp include polyolefins, polyesters, polyacrylonitrile, and other thermoplastic resins. In particular, one type of ethylene and α-olefin resin such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-1-butene copolymer, ethylene-4-methy/L/-1-hair fon copolymer, etc. Alternatively, polyolefins obtained from two or more types are preferable because low freeness can be significantly improved.
更に、フラッシュ紡糸により形成した繊維にはポリビニ
ルアルコールの親水化処理を行うことが出来、これによ
って、更に本発明に好ましい合成パルプを提供すること
ができる０合成パルプをこのように親水化処理すると、
植物繊維性パルプと合成パルプとの共叩解処理時に凝塊
が更に生じ難くなり、低濾水性のパルプが容易に製造で
きるからである。Furthermore, the fibers formed by flash spinning can be subjected to hydrophilic treatment with polyvinyl alcohol, thereby providing a synthetic pulp that is further preferred in the present invention.
This is because coagulation becomes more difficult to form during the co-beating treatment of the vegetable fibrous pulp and the synthetic pulp, and a pulp with low freeness can be easily produced.
前記の如く構成した本発明に係る低濾水性パルプの製法
によれば、合成パルプはフラッシュ紡糸したものが使用
され、この合成パルプは植物繊維性パルプと混合され共
叩解される。このような合成パルプを加えて共叩解する
と、第１に共叩解の際に凝塊が生じ龍（なる現象がみら
れる。低濾水性パルプに於いて、繊維の切断或いは凝塊
の少ないことは更に改良された低濾水性のパルプ材を提
供する基本となるものである。According to the method for producing a low-freeness pulp according to the present invention configured as described above, a flash-spun synthetic pulp is used, and this synthetic pulp is mixed with a vegetable fiber pulp and co-beaten. When such synthetic pulp is added and co-beaten, firstly, coagulum is formed during co-beating, and a phenomenon called "dragon" is observed.In low freeness pulp, there is no possibility of fiber breakage or lack of coagulum. This is the basis for providing a pulp material with further improved low freeness.
この為、本発明に係る低濾水性パルプの製法では、共叩
解処理が繊維の切断や凝塊を発生させることなく簡単に
できる。また、後述の実施例に示すようにリファイナー
バス回数毎のフリーネスＣａｎａｄｉａｎ ５ｔａｎｄ
ａｒｄ Ｆｒｅｅｎｅｓｓ （ＣＳ Ｆ ）の下がり方
が比較例の場合より大きいことより、叩解処理が従来の
パルプより少な（済むことがわかる。これはパルプの強
度低下が起き難くなることになる。Therefore, in the method for producing a low-freeness pulp according to the present invention, the co-beating treatment can be easily performed without cutting fibers or producing coagulation. In addition, as shown in the example below, the freeness Canadian 5tand for each number of refiner baths
The decrease in ard freeness (CSF) is greater than that of the comparative example, which indicates that the beating process is less than that of conventional pulp. This means that the strength of the pulp is less likely to deteriorate.
更に、製造低源水性パルプは、第２の現象効果によるも
のか否か明確ではないが、後述の実施例と比較例（表１
のリファイナーバス回数６回のｆＩｉｌｌ）から明らか
なように、従来のパルプより低い濾水性のパルプに成る
ことがわかる。Furthermore, although it is not clear whether or not the produced low-source aqueous pulp is due to the second phenomenon effect, the following examples and comparative examples (Table 1)
As is clear from the number of refiner baths (6 times), the resulting pulp has lower freeness than conventional pulp.
尚、前述に示したように合成パルプをポリビニルアルコ
ールで親水化処理することは、凝塊の発生を更に防止し
、本発明の目的に於いて更に好ましい実施態様である。Note that, as described above, hydrophilizing the synthetic pulp with polyvinyl alcohol further prevents the generation of coagulum, and is a more preferred embodiment for the purpose of the present invention.
入 パル に に いビニルアルコー
ルｐ の
合成パルプの表面には、ポリビニルアルコールの他にフ
ェノール系或いは亜りん酸系の酸化防止剤等の耐熱安定
剤を塗布してもよい。In addition to polyvinyl alcohol, a heat-resistant stabilizer such as a phenol-based or phosphorous acid-based antioxidant may be applied to the surface of the synthetic pulp containing vinyl alcohol (P).
また、界面活性剤等を合成パルプのフラッシュ紡糸前後
に添加しもよい、界面活性剤としては、アルキルベンゼ
ンスルホン酸ナトリウム、シアル牛ルスルホコハダ酸ナ
トリウム、ポリオキシエチレンラウリルエーテル、ポリ
オキシエチレンステアリルエーテル、ポリオキシエチレ
ンオレイルエーテル、ポリオキシエチレンノニルフェニ
ルエーテル、ソルビタンモノラウレート、ソルビタンジ
ラウレート、ポリオキシエチレンソルビタンモノ（又は
、ジ、トリ）ラウレート、ポリオキシエチレンアルキル
アミン、ステアリン酸モノ（又は、ジ、トリ）グリセラ
イド、ラウリルアミンアセテート等が挙げられる。In addition, surfactants and the like may be added before and after flash spinning the synthetic pulp. Examples of the surfactants include sodium alkylbenzene sulfonate, sodium sialylbenzene sulfonate, polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, and polyoxyethylene lauryl ether. Ethylene oleyl ether, polyoxyethylene nonylphenyl ether, sorbitan monolaurate, sorbitan dilaurate, polyoxyethylene sorbitan mono (or di, tri) laurate, polyoxyethylene alkylamine, stearic acid mono (or di, tri) glyceride , laurylamine acetate, and the like.
以上のように本発明に係る低濾水性パルプの製法によっ
て製造されたパルプは、低濾水性であるため、−船釣な
ボードに使用されるだけでなく、特殊な分野、例えば抄
造法によるセメントストレート板や、セラミックシート
等を効果的に作ることが可能となる。As described above, the pulp produced by the method for producing a low-freeness pulp according to the present invention has low freeness, so it is not only used for boat fishing boards, but also used in special fields, such as cement by the paper-making method. It becomes possible to effectively make straight plates, ceramic sheets, etc.
以下に実施例を示す。 Examples are shown below.
に る ・
（１）植物繊維性パルプ
木材パルプ・ＮＵＫＰ （針葉樹未晒 クラフトパルプ
）
（２）合成パルプ（ＳＷＰ−１３
ポリエチレン（ＰＥ）（フラッシュ紡糸によるもの、平
均繊維長１．６ ａ、、、平均Ｃ３Ｆ７３（３）合成パ
ルプ（ＳＷＰ−２）
ポリエチレン（ＰＥ）（フラッシュ紡糸によるもの、平
均繊維長１．３ ａ、、平均Ｃ３Ｆ３０（実施例１）
木材パルプ・ＮＵＫＰを７０重量部、合成パルプ・５Ｗ
Ｐ−１を３０重量部（両者の合計量を１−とする。）と
を、容量１００ｊ！のパルパーに挿入して、１００４！
の水中で混合した。(1) Vegetable fiber pulp wood pulp/NUKP (softwood unbleached kraft pulp) (2) Synthetic pulp (SWP-13 polyethylene (PE) (flash-spun, average fiber length 1.6 a) Average C3F73 (3) Synthetic pulp (SWP-2) Polyethylene (PE) (by flash spinning, average fiber length 1.3 a, Average C3F30 (Example 1) 70 parts by weight of wood pulp/NUKP, synthetic pulp/ 5W
30 parts by weight of P-1 (the total amount of both is 1-) and a volume of 100j! Insert it into the pulper, 1004!
mixed in water.
この混合スラリーを直径１２ｚ＞のディスク型リファイ
ナーにおいてそのクリアランスを２００μｍに設定して
、２ｔ／ｈｒの流量にて通過させた（叩解処理）。This mixed slurry was passed through a disc-type refiner with a diameter of 12z> with a clearance of 200 μm and a flow rate of 2 t/hr (beating treatment).
各リファイナーバス毎にフリーネスを測定し、濾水性の
下がり方及び最終的な低減水性を調べた。The freeness was measured for each refiner bath, and the manner in which the freeness decreased and the final reduced water content were investigated.
その結果を表１に示す、この結果、後記載する比較例の
木材パルプ・ＮＵＫＰの単独で叩解処理したものより低
い低減水性パルプが得られた。The results are shown in Table 1. As a result, a reduced aqueous pulp was obtained which was lower than that obtained by beating the wood pulp/NUKP of a comparative example described later alone.
（実施例２）
木材パルプ・ＮＵＫＰを５０重量部、合成パルプ・５Ｗ
Ｐ−１を５０重量部（両者の合計量を１−とする、）と
した以外、実施例１と同様な操作をして低濾水性を調べ
た。その結果を表１に示す。(Example 2) 50 parts by weight of wood pulp/NUKP, synthetic pulp/5W
Low freeness was examined in the same manner as in Example 1 except that P-1 was changed to 50 parts by weight (total amount of both is 1-). The results are shown in Table 1.
この結果、後記載する比較例の木材パルプ・ＮＵＫＰの
単独で叩解処理したものより低い低濾水性パルプが得ら
れた。As a result, a pulp with low freeness lower than that obtained by beating the wood pulp/NUKP of a comparative example described later alone was obtained.
（実施例３）
木材パルプ・ＮＵＫＰを３０重量部、合成パルプ・５Ｗ
Ｐ−１を７０重量部（両者の合計量を１眩とする。）と
した以外、実施例１と同様な操作をして低濾水性を調べ
た。その結果を表１に示す。(Example 3) 30 parts by weight of wood pulp/NUKP, synthetic pulp/5W
Low freeness was examined in the same manner as in Example 1, except that P-1 was 70 parts by weight (the total amount of both was 1 dazzle). The results are shown in Table 1.
この結果、後記載する比較例の木材パルプ・ＮＵＫＰの
単独で叩解処理したものより低い低濾水性パルプが得ら
れた。As a result, a pulp with low freeness lower than that obtained by beating the wood pulp/NUKP of a comparative example described later alone was obtained.
（実施例４）
木材パルプ・ＮＵＫＰを７０重量部、合成パルプ・５Ｗ
Ｐ−２を３０重量部（両者の合計量をｌ眩とする。）と
した以外、実施例１と同様な操作をして低濾水性を調べ
た。その結果を表１に示す。(Example 4) 70 parts by weight of wood pulp/NUKP, synthetic pulp/5W
Low freeness was examined in the same manner as in Example 1, except that P-2 was changed to 30 parts by weight (the total amount of both is 1). The results are shown in Table 1.
この結果、後記載する比較例の木材パルプ・ＮＵＫＰの
単独で叩解処理したものより低い低濾水性パルプが得ら
れた。As a result, a pulp with low freeness lower than that obtained by beating the wood pulp/NUKP of a comparative example described later alone was obtained.
（実施例５）
木材パルプ・ＮＵＫＰを５０重量部、合成パルプ・５Ｗ
Ｐ−２を５０重量部（両者の合計量を１−とする。）と
した以外、実施例１と同様な操作をして低濾水性を調べ
た。その結果を表１に示す。(Example 5) 50 parts by weight of wood pulp/NUKP, synthetic pulp/5W
Low freeness was examined in the same manner as in Example 1 except that P-2 was changed to 50 parts by weight (the total amount of both is 1-). The results are shown in Table 1.
この結果、後記載する比較例の木材パルプ・ＮＵＫＰの
単独で叩解処理したものより低い低濾水性パルプが得ら
れた。As a result, a pulp with low freeness lower than that obtained by beating the wood pulp/NUKP of a comparative example described later alone was obtained.
（実施例６）
木材パルプ・ＮＵＫＰを５０重量部、合成パルプ・ｓｗ
ｐ−２を５０重量部（両者の合計量を１廟とする。）と
した以外、実施例１と同様な操作をして低濾水性を調べ
た。その結果を表１に示す。(Example 6) 50 parts by weight of wood pulp/NUKP, synthetic pulp/sw
Low freeness was examined in the same manner as in Example 1, except that p-2 was changed to 50 parts by weight (the total amount of both was 1 part by weight). The results are shown in Table 1.
この結果、後記載する比較例の木材パルプ・ＮＵＫＰの
単独で叩解処理したものより低い低濾水性パルプが得ら
れた。As a result, a pulp with low freeness lower than that obtained by beating the wood pulp/NUKP of a comparative example described later alone was obtained.
（比較例１） 木材パルプ・ＮＵＫＰを１００重量部（Ｉｋｇとする。(Comparative example 1) Wood pulp/NUKP is 100 parts by weight (Ikg).
）とした以外、実施例１と同様な操作をして低濾水性を
調べた。その結果を表１に示す、この結果、比較例１は
各実施例の場合と相違してリファイナー毎のフリーネス
の下がりが少な（、最終的に低濾水性パルプが得られな
い。) The same operation as in Example 1 was carried out to examine low freeness. The results are shown in Table 1. As a result, in Comparative Example 1, unlike in each of the Examples, the freeness decreased less with each refiner (and ultimately, a low freeness pulp could not be obtained).
（比較例２）
木材パルプ・ＮＵＫＰを５０重量部、熔融紡糸されたＰ
Ｐ短繊維（商品名 Ｐ−ＣＨＯＰ チッソ（株）製
２ｄＸ５ｍｍ）を５０重量部で混合した後、実施例１と
同様な操作をして低濾水性を調べた。その結果を表２に
示す、この結果、比較例２は各実施例の場合と相違して
リファイナー毎のフリーネスの下がりが少なく、最終的
に十分な低濾水性パルプが得られない。(Comparative Example 2) 50 parts by weight of wood pulp/NUKP, melt-spun P
P short fiber (product name P-CHOP manufactured by Chisso Corporation)
After mixing 50 parts by weight of 2dX5mm), the same operation as in Example 1 was performed to examine low freeness. The results are shown in Table 2. As a result, in Comparative Example 2, unlike in each of the Examples, the freeness decreased less with each refiner, and ultimately a sufficiently low freeness pulp could not be obtained.
表１
表２
【発明の効果〕
以上説明したように本発明に係る低濾水性パルプの製法
によれば、植物繊維性パルプと特に、フラッシュ紡糸し
て成る合成パルプとを混合して共叩解処理するので、叩
解の際の叩解処理炭の進み方が早く、且つ凝塊等の発生
がないため簡単にパルプの叩解処理ができる。また、叩
解度の程度も従来より大きく、低濾水性パルプを得るこ
とができる。Table 1 Table 2 [Effects of the Invention] As explained above, according to the method for producing low freeness pulp according to the present invention, vegetable fiber pulp and especially synthetic pulp formed by flash spinning are mixed and subjected to co-beating treatment. Therefore, the beaten charcoal advances quickly during beating, and since no coagulum or the like is generated, the pulp can be easily beaten. In addition, the degree of freeness is also higher than that of the conventional method, and it is possible to obtain a pulp with low freeness.
出願人 三井石油化学工業株式会社Applicant: Mitsui Petrochemical Industries, Ltd.
Claims (3)
樹脂を処理して成る合成パルプ２乃至９８重量部を混合
した組成物を叩解して濾水性を下げたことを特徴とする
低濾水性パルプの製法。(1) A low-filtration product characterized by lowering freeness by beating a composition obtained by mixing 98 to 2 parts by weight of vegetable fiber pulp and 2 to 98 parts by weight of synthetic pulp treated with a thermoplastic resin. Aqueous pulp manufacturing method.
るものであることを特徴とする請求項第１項記載の低濾
水性パルプの製法。(2) The method for producing a low freeness pulp according to claim 1, wherein the synthetic pulp is obtained by flash spinning.
ルプを植物繊維性パルプと混合することを特徴とする請
求項第１項記載の低濾水性パルプの製法。(3) The method for producing a low-freeness pulp according to claim 1, characterized in that a synthetic pulp that has been hydrophilized with polyvinyl alcohol is mixed with a vegetable fiber pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4184989A JPH02221485A (en) | 1989-02-23 | 1989-02-23 | Production of pulp with low freeness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4184989A JPH02221485A (en) | 1989-02-23 | 1989-02-23 | Production of pulp with low freeness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02221485A true JPH02221485A (en) | 1990-09-04 |
Family
ID=12619701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4184989A Pending JPH02221485A (en) | 1989-02-23 | 1989-02-23 | Production of pulp with low freeness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02221485A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247049A (en) * | 1975-10-11 | 1977-04-14 | Mitsubishi Chem Ind Ltd | Flame retardant polycarbonate resin composition |
| JPS542283A (en) * | 1977-06-03 | 1979-01-09 | Hoffmann La Roche | Liquid crystal mixture |
-
1989
- 1989-02-23 JP JP4184989A patent/JPH02221485A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247049A (en) * | 1975-10-11 | 1977-04-14 | Mitsubishi Chem Ind Ltd | Flame retardant polycarbonate resin composition |
| JPS542283A (en) * | 1977-06-03 | 1979-01-09 | Hoffmann La Roche | Liquid crystal mixture |
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