JPH0726451A - Dry papermaking from waste paper - Google Patents
Dry papermaking from waste paperInfo
- Publication number
- JPH0726451A JPH0726451A JP5195146A JP19514693A JPH0726451A JP H0726451 A JPH0726451 A JP H0726451A JP 5195146 A JP5195146 A JP 5195146A JP 19514693 A JP19514693 A JP 19514693A JP H0726451 A JPH0726451 A JP H0726451A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- waste paper
- dry
- fibers
- lignin
- 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.)
- Withdrawn
Links
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、新聞・雑誌等の機械パ
ルプ法による古紙を利用した乾式製紙法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry papermaking method using waste paper by a mechanical pulp method such as newspapers and magazines.
【０００２】[0002]
【従来の技術】従来、古紙は回収された後選別され、紙
パルプ工場に輸送された後、多量の水とパルパーにおい
て混合され、精選工程を経て、湿式の製紙工程に原料と
して供給されている。2. Description of the Related Art Conventionally, used paper is collected, sorted, transported to a pulp and paper factory, mixed with a large amount of water in a pulper, and then subjected to a selective process and then supplied as a raw material to a wet papermaking process. .
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来法は
膨大な量の水を消費し、同時に多量の排水を出すため古
紙は最大の発生地である大都会近郊では処理できず、高
価な輸送費を使って遠隔の紙パルプ工場に運ばねばなら
ず、採算の合わない低価格の新聞・雑誌古紙などは、各
地で未引き取り在庫が発生して、貴重な森林資源を再利
用する率が非常に少ないという課題を有するばかりか、
貴重な天然資源を焼却や埋立に回さねばならぬというよ
うな社会問題となっている。However, since the above-mentioned conventional method consumes a huge amount of water, and at the same time produces a large amount of waste water, waste paper cannot be processed in the vicinity of the big city, which is the largest source, and expensive transportation. Because low-priced newspapers, magazines, and other unprofitable low-priced paper must be used to transport to a remote pulp and paper mill at high cost, uncollected inventory is generated in various places, and the rate at which valuable forest resources are reused is extremely high. Not only has the problem of being few,
It has become a social problem that valuable natural resources must be incinerated or landfilled.
【０００４】そこで本発明は、特に回収価格が安価でそ
の流通に経済的な障害のある新聞・雑誌古紙に焦点をあ
て、純白な印刷用紙は望めなくとも、包装や製函用など
には十分利用できる強度をもつ用紙を、排水の出ない乾
式工程によって製紙することのできる古紙を使用した乾
式製紙法を提供することを目的としたものである。Therefore, the present invention focuses on newspapers and magazines, which have a low recovery price and economically impede their distribution, and are not sufficient for pure white printing paper, but are sufficient for packaging and box making. It is an object of the present invention to provide a dry papermaking method using waste paper that can be used to produce paper having a usable strength by a dry process without drainage.
【０００５】なお、これら新聞・雑誌等の古紙は元来、
機械パルプ法によって抄造されており、特に最近ではほ
とんどの機械パルプはＴ．Ｍ．Ｐ．（ＴＨＥＲＭＯ Ｍ
ＥＣＨＡＮＩＣＡＬ ＰＵＬＰ）と称する、つまり加熱
してリグニンを柔らかくした後で解繊するので、セルロ
ース繊維の表面にリグニン層が巻いた状態になってい
る。Originally, these old newspapers and magazines were originally
Papermaking is carried out by the mechanical pulp method, and most recently, most mechanical pulps are manufactured by T.M. M. P. (THERMO M
ECHANICAL PULP), that is, since the lignin is softened by heating and then defibrated, the lignin layer is wound around the surface of the cellulose fiber.
【０００６】上記リグニンは化学構造が複雑な天然高分
子材料であり、極めて安定した分解し難い性質を持つ物
質であることが知られているが、セルロース繊維を取り
巻いていることから、何とか化学修飾して繊維間の接着
性を付与して、水を使った水素結合に代わる乾式工程に
よる強固な紙状体を作る課題を満足する技術的手段を提
供することを目的としたものである。The above-mentioned lignin is a natural polymer material having a complicated chemical structure, and it is known that it is a substance having an extremely stable and difficult-to-decompose property. However, since it surrounds cellulose fiber, it is somehow chemically modified. It is an object of the present invention to provide a technical means for satisfying the problem of providing a strong paper-like material by a dry process in place of hydrogen bonding using water by imparting adhesiveness between fibers.
【０００７】[0007]
【課題を解決するための手段】上記の目的に沿い、先述
特許請求の範囲を要旨とする本発明の構成は前述課題を
解決するために、主として機械パルプによって構成され
ている新聞・雑誌等の古紙を乾式で解繊したものを、先
ず重量の１％以下のオゾン添加によるリグニン酸化を行
なった後乾式フォーミングし、スチレン・ブタジェンラ
テックス乳化液を噴霧し、熱圧プレス工程によって紙状
の製品を作ることを特徴とした技術的手段を講じたもの
である。In order to solve the aforesaid problems, the structure of the present invention, which is based on the above-mentioned claims, is intended to solve the above-mentioned problems. Waste paper defibrated by dry method is first lignin-oxidized by adding 1% or less of the weight of ozone, then dry-formed, sprayed with styrene / butadiene diene emulsion, and hot pressed into paper-like products. It is a technical measure that is characterized by making.
【０００８】[0008]
【作用】先ず、本発明に使用したスチレン・ブタジェン
ラテックスは極めて一般に製紙用・建築材料用に使用さ
れているバインダーであり高分子ラテックスに分類され
るが、ポリマー主鎖に二重結合が残されているために化
学的に活性であり、熱・酸素・紫外線などの影響を受け
て劣化しやすい欠点を持つものであるとされているが
０．１〜５ミクロンの球状体が水に分散した状態の乳化
液として容易に得ることができ、安価かつ無毒性である
という特長がある。First, the styrene-butadiene latex used in the present invention is a binder generally used for papermaking and building materials and is classified as a polymer latex, but a double bond remains in the polymer main chain. Therefore, it is said that it is chemically active and has the drawback that it easily deteriorates under the influence of heat, oxygen, ultraviolet rays, etc., but spherical particles of 0.1 to 5 microns are dispersed in water. It can be easily obtained as an emulsion in the prepared state, and is inexpensive and nontoxic.
【０００９】そして、前述のごとくリグニンによって被
覆された繊維のリグニンをオゾン酸化した後、綿状にマ
ット成形し、マットの上からスチレン・ブタジェンラテ
ックス乳化液を散布すると毛細管現象で繊維マット内に
乳化液が分散する。次いで、例えば１２０〜１４０℃に
加熱した一対の加熱プレスロール間を通すと、乳化液中
の水分が急激に蒸発し、スチレン・ブタジェンラテック
スの微細粒子がリグニン表面に押しつけられると同時に
加熱によって化合して粘弾性を持つ物質となって、繊維
間を強固に接合する作用を呈するものである。Then, as described above, the lignin of the fiber coated with lignin is ozone-oxidized, and then matted into a cotton shape, and the styrene / butadiene diene emulsion is sprayed on the mat to cause capillary action in the fiber mat. The emulsion is dispersed. Then, for example, when it is passed between a pair of heating press rolls heated to 120 to 140 ° C., the water content in the emulsion rapidly evaporates, and fine particles of styrene / butadiene powder are pressed against the lignin surface and at the same time the compound is formed by heating. Then, it becomes a substance having viscoelasticity and exhibits an action of firmly joining the fibers.
【００１０】この反応によって生成された粘弾性物質は
リグニン樹脂とでも呼ばれるものであり、さらに詳しく
は次のとおり考えられる。リグニンをオゾン酸化すると
ムコン酸の誘導体が生じることは知られているが、オゾ
ン酸化による芳香核の開裂はリグニンのフェニルプロパ
ン骨格のうち３位と４位の間が主体であり、それらの置
換基が遊離のカルボキシル基となる。本反応において
は、スチレン・ブタジェンラテックス粒子に接触してい
るオゾン酸化リグニンが界面で熱溶解し、さらに加熱に
よってリグニンのカルボキシ基とスチレン・ブタジェン
ラテックスが反応し、強い粘弾性をもつリグニン樹脂が
生成されたと解釈することが出来る。The viscoelastic substance produced by this reaction is also called a lignin resin, and it can be considered as follows in more detail. It is known that ozonation of lignin produces a derivative of muconic acid, but the cleavage of aromatic nuclei by ozone oxidation is mainly between the 3rd and 4th positions of the phenylpropane skeleton of lignin, and their substituents Becomes a free carboxyl group. In this reaction, the ozone-oxidized lignin in contact with the styrene / butadiene diene particles is thermally dissolved at the interface, and the carboxy group of lignin reacts with the styrene / butadiene diene by heating, resulting in a strong viscoelastic lignin resin. Can be interpreted as being generated.
【００１１】また熱圧プレス時に発生する蒸気はリグニ
ンを軟化せしめるのみならずセルロースにも柔軟性を与
え、より繊維の密着した強固な紙を製造することに役立
つ作用を呈するものである。Further, the steam generated at the time of hot-pressing not only softens the lignin but also imparts flexibility to the cellulose and has a function of helping to produce a strong paper in which fibers are more closely adhered.
【００１２】[0012]
【実施例】以下、本発明の実施例を添付図面を参照して
説明する。まず、本発明は主として機械パルプによって
構成されている新聞・雑誌等の古紙を乾式で解繊する。Embodiments of the present invention will be described below with reference to the accompanying drawings. First, the present invention dry-defibrates waste paper such as newspapers and magazines mainly composed of mechanical pulp.
【００１３】上記において「主として機械パルプによっ
て構成されている」としたのは、本発明が利用範囲の狭
い機械パルプ古紙を有効利用することを目的とするため
で、雑誌等に化学パルプ古紙が多少混入する場合はこれ
を、選別除去する必要性は有しないという程度、言い換
えると主原料が機械パルプ古紙であるという意味であ
る。In the above description, the phrase "composed mainly of mechanical pulp" is intended for the purpose of effectively utilizing mechanical pulp waste paper having a narrow range of use, and chemical pulp waste paper may be used in magazines and the like to some extent. When mixed, it means that it does not have to be selectively removed, in other words, the main raw material is mechanical pulp waste paper.
【００１４】そして、機械パルプ古紙は予め小片に裁断
し、従来公知な乾式解繊機によって綿毛状に解繊する
が、この解繊に際してセルロースが短く分断されると紙
力低下の原因となるので、できるだけ小さい外力を長時
間に渡って加えて徐々に解繊することが望ましい。The mechanical pulp waste paper is preliminarily cut into small pieces and defibrated into a fluff by a conventionally known dry defibration machine. However, when the defibration causes the cellulose to be cut into short pieces, it causes a decrease in paper strength. It is desirable to apply the smallest possible external force for a long time and gradually disintegrate.
【００１５】図示例の解繊機２は、その内部構造を示し
ていないが、放射状の高速回転翼と、この回転翼の先端
に対向する内周面を凹凸面となしたケーシングとを有し
てなり、該回転翼によって生ずる気流により、ホッパー
１に収納され、定量供給装置１１より空気輸送管３内に
定量供給される３×６ｍｍ程度に裁断した機械パルプ古
紙を、ケーシング内に吸引して空気輸送管３で気流と共
に伴送させるようになしてある。すると、機械パルプ古
紙は当該解繊機２のケーシング内に吸引され、その内周
面に衝突して解繊され、平均長さ２ｍｍ程度のパルプ繊
維が複雑に絡みあった綿状体が得られる。Although the internal structure of the defibrating machine 2 is not shown, the defibrating machine 2 has a radial high-speed rotary blade and a casing whose inner peripheral surface facing the tip of the rotary blade has an uneven surface. Then, by the air flow generated by the rotary blade, the mechanical pulp waste paper, which is stored in the hopper 1 and is quantitatively supplied into the air transport pipe 3 by the constant quantity supply device 11, cut into about 3 × 6 mm, is sucked into the casing to generate air. The transport pipe 3 is designed to be accompanied by the air flow. Then, the mechanical pulp waste paper is sucked into the casing of the defibrating machine 2 and collides with the inner peripheral surface of the defibrating machine to be defibrated to obtain a cotton-like body in which pulp fibers having an average length of about 2 mm are entangled in a complicated manner.
【００１６】なお、上記解繊機２を使用し、乾式解繊し
た綿状体は、見掛け比重は約０．０３で非常に軽いもの
であった。The cotton-like material which was dry-defibrated by using the defibrating machine 2 had an apparent specific gravity of about 0.03 and was very light.
【００１７】次ぎに、上記綿状体を重量の１％以下のオ
ゾン添加によるリグニン酸化を行なう。具体的実施例と
しては、上記綿状体に自重の０．０６％の４０．０００
ｐｐｍのオゾンガスを加え流動リアクター（図示せず）
で混合したところ約３０秒でオゾン濃度がゼロとなり全
量反応に消費されオゾン酸化リグニンが出来たことを知
った。Next, the above cotton-like material is lignin-oxidized by adding 1% or less by weight of ozone. As a specific example, 40.000 of 0.06% of its own weight is added to the cotton-like material.
Flow reactor (not shown) with ppm ozone gas added
It was learned that the ozone concentration became zero in about 30 seconds when mixed with, and the ozone-oxidized lignin was produced by consuming all the amount in the reaction.
【００１８】上記リグニンのオゾン酸化に際し、均一な
反応を得るためには、一度綿状体を得て、これを流動化
させつつオゾンガスと接触するのが実用的であったが、
図示例は、解繊機２の流入口上流部位にオゾナイザー４
１のオゾン供送管４２を連通してあり、古紙は解繊機２
で乾式解繊されつつオゾンガスと接触するようになして
あり、該図示実施例によってもオゾン酸化に実質的相違
は認められなかった。In order to obtain a uniform reaction during the ozone oxidation of lignin, it was practical to obtain a cotton-like material once and contact it with ozone gas while fluidizing it.
In the illustrated example, the ozonizer 4 is provided at the upstream side of the inlet of the defibrating machine 2.
The ozone feed pipe 42 of No. 1 is connected, and the waste paper is the defibration machine 2
It was so constructed as to come into contact with ozone gas while being dry defibrated by the above method, and no substantial difference was observed in ozone oxidation even in the illustrated example.
【００１９】そして、本発明はさらにこのオゾン反応済
み綿状体を乾式フォーミングする。この綿状体は前記し
たように、見掛け比重が小さく非常に軽いものであるか
ら容易に飛散してしまうので、図示実施例では、空気輸
送管３の先端ノズル３１から輸送用気流と共に通気性の
あるエンドレスベルト５上に吹き付け、気流は該エンド
レスベルト５を通過して綿状体がエンドレスベルト５上
にマットＭとなって堆積するようになしている。The present invention further dry-forms this ozone-reacted cotton. As described above, this cotton-like material has a small apparent specific gravity and is very light, and therefore easily scatters. Therefore, in the illustrated embodiment, the cotton-like material is permeable to the air flow for transportation from the tip nozzle 31 of the air transportation pipe 3. It is blown onto a certain endless belt 5, and the air flow passes through the endless belt 5 so that the cotton-like material is deposited on the endless belt 5 as a mat M.
【００２０】なお、上記綿状体の乾式フォーミングに際
して、エンドレスベルト５の裏面側にはサクションボッ
クス６を設けて、空気輸送用気流を吸引するようになし
てある。このサクションボックス６は、空気輸送管３の
先端から噴射される輸送用気流を整流しマットＭの厚み
を均一化すると共に、パルプ繊維どうしの絡み合いを密
となし、以後のハンドリングが容易な程度に締め固めら
れたマットＭをフォーミングするのに有効なものであっ
た。そして、本実施例では回動中のエンドレスベルト５
上に、綿状体を連続噴射し、厚さ１５ｍｍの長尺マット
状に連続成形し、生成されたマットＭは１ｍ2 あたり１
５０ｇであった。In the dry forming of the cotton-like material,
Then, on the back side of the endless belt 5, the suction box
There is a box 6 so that the air flow for air transportation is not sucked.
There is. This suction box 6 is provided on the air transport pipe 3.
The thickness of the mat M that regulates the air flow for transportation jetted from the tip
Of the pulp fibers and the entanglement of pulp fibers
And compact it to the extent that it is easy to handle afterwards.
Is effective for forming the mat M
It was In this embodiment, the endless belt 5 that is rotating
Continuously spray a cotton-like material onto the top, and a long mat with a thickness of 15 mm
The mat M is 1 m long2 Per 1
It was 50 g.
【００２１】次に、マットＭにスチレン・ブタジェンラ
テックス乳化液を噴霧する。図示例においてこのスチレ
ン・ブタジェンラテックス乳化液はタンク７１よりノズ
ル７２，７２，７２・・・によりエンドレスベルト５上
の移動中のマットＭに噴霧している。なお、このスチレ
ン・ブタジェンレテックス乳化水溶液は１ｍ2あたり固
形分７，５ｇの割合で噴霧した。Next, the matte M is sprayed with a styrene-butadiene diene emulsion. In the illustrated example, this styrene-butadiene diene emulsion is sprayed from the tank 71 onto the moving mat M on the endless belt 5 by the nozzles 72, 72, 72 ... The styrene / butadiene diene emulsion aqueous solution was sprayed at a solid content of 7.5 g per 1 m 2 .
【００２２】そして、本発明は、上記マットＭを熱圧プ
レスして紙状の製品を得る。前記エンドレスベルト５の
搬送終端側側方には、加熱圧搾ローラ８，８，８・・・
が並置してあり、マットＭはエンドレスベルト５よりこ
の加熱圧搾ローラ８，８，８・・・に移送されるように
なしてある。加熱圧搾ローラ８，８，８・・・は約１４
０℃に加熱され、マットＭは約１２秒間でこの加熱圧搾
ローラ８，８，８・・・の間を通過するようになしてあ
る。In the present invention, the mat M is hot pressed to obtain a paper-like product. On the side of the end of the endless belt 5 on the conveying end side, the heating and pressing rollers 8, 8, 8 ...
Are arranged side by side, and the mat M is transferred from the endless belt 5 to the heating and pressing rollers 8, 8 ,. The heating and pressing rollers 8, 8, 8 ... Approximately 14
The mat M is heated to 0 ° C. and passes between the heating and pressing rollers 8, 8, 8 ... In about 12 seconds.
【００２３】なお、マットＭは前工程のフォーミング工
程である程度締め固められているので、エンドレスベル
ト５より離れて加熱圧搾ローラ８，８，８・・・の間を
通過する際に切断することはないが、高速で通過させる
場合は、図に示した案内ベルト８１にマットＭを乗せて
加熱圧搾ローラ８，８，８・・・の間を通過するように
なすとよい。Since the mat M is compacted to some extent in the preceding forming step, it is not cut when it is separated from the endless belt 5 and passes between the heating and pressing rollers 8, 8 ,. However, in the case of passing the mat at a high speed, it is advisable to place the mat M on the guide belt 81 shown in the figure so as to pass between the heating and pressing rollers 8, 8, 8.
【００２４】上記加熱圧搾ローラ８，８，８・・・の間
を通過することで、マットＭは厚み０．２ｍｍの比較的
厚手の紙状体となった。なお、この紙状体は脱墨してい
ないため、柔らかい灰色を呈したものであったが、外観
も良くさらに市販のセメントや飼料の袋紙に相当する強
度を有していた。なお、本実施例では加熱圧搾ローラ
８，８，８・・・に案内ベルト８１をかけたため、裏面
が多少粗面状となっていたので、カレンダーロール９を
通過させて、両面に平滑性と光沢性を付与した後、ワイ
ンダー１０で巻き取るようになした。By passing between the heating and pressing rollers 8, 8, ..., The mat M becomes a relatively thick paper-like body having a thickness of 0.2 mm. Since this paper-like material was not deinked and thus had a soft gray color, it had a good appearance and had a strength equivalent to that of commercially available cement or feed sack paper. In this embodiment, since the guide belt 81 was applied to the heating and pressing rollers 8, 8, 8 ..., The back surface was somewhat rough, so that the calender roll 9 was passed through and the both surfaces were smoothed. After imparting glossiness, the film was wound by a winder 10.
【００２５】[0025]
【発明の効果】以上一実施例について説明したが、本発
明においては工程中排水は一切出ないことに加え従来の
湿式製紙法に比べて非常に簡便な方法設備で製紙するこ
とができ、大都市の一角に設置して発生古紙からすぐ日
常消費する包装材や袋材を製造できるリサイクルが可能
であり、しかも原料がバージンパルプに比べ１／１０以
下の安価なところから十分採算的にも見合うリサイクル
製造が可能な古紙を使用した乾式製紙法を提供できるも
のである。Although one embodiment has been described above, in the present invention, no wastewater is produced during the process, and in addition, it is possible to make paper with a very simple method facility as compared with the conventional wet papermaking method. It can be installed in a corner of the city to produce packaging materials and bags that can be consumed everyday immediately from waste paper, and can be recycled, and the raw material is 1/10 or less cheaper than virgin pulp, so it is well-profitable. It is possible to provide a dry paper manufacturing method using recycled paper that can be recycled.
【図１】本発明を実施する装置例前半部の正面図であ
る。FIG. 1 is a front view of the first half of an example of an apparatus for carrying out the present invention.
【図２】本発明を実施する装置例後半部の正面図であ
る。FIG. 2 is a front view of the latter half of an example of an apparatus that implements the present invention.
【符号の説明】 １ ホッパー ２ 乾式解繊機 ３ 空気輸送管 ６ エンドレスベルト ７ タンク ８ 加熱圧搾ローラ ４１ オゾナイザー[Explanation of symbols] 1 hopper 2 dry defibrator 3 air transport pipe 6 endless belt 7 tank 8 heating and pressing roller 41 ozonizer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 柿原 與志人 兵庫県高砂市新井町新浜２丁目３番１号 株式会社神戸製鋼所高砂製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshito Kakihara 2-3-1, Niihama, Niimachi, Takasago-shi, Hyogo Kobe Steel Works Takasago Works
Claims (1)
いる新聞・雑誌等の古紙を乾式で解繊したものを、先ず
重量の１％以下のオゾン添加によるリグニン酸化を行な
った後乾式フォーミングし、スチレン・ブタジェンラテ
ックス乳化液を噴霧し、熱圧プレス工程によって紙状の
製品を作ることを特徴とした乾式製紙法。1. A dry defibrated waste paper mainly composed of mechanical pulp such as newspapers and magazines is first lignin-oxidized by adding 1% or less by weight of ozone and then dry-formed to obtain styrene. A dry papermaking method characterized by spraying a Butagen latex emulsion and making a paper-like product by a hot-pressing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5195146A JPH0726451A (en) | 1993-07-12 | 1993-07-12 | Dry papermaking from waste paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5195146A JPH0726451A (en) | 1993-07-12 | 1993-07-12 | Dry papermaking from waste paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0726451A true JPH0726451A (en) | 1995-01-27 |
Family
ID=16336208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5195146A Withdrawn JPH0726451A (en) | 1993-07-12 | 1993-07-12 | Dry papermaking from waste paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726451A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8882965B2 (en) | 2011-01-12 | 2014-11-11 | Seiko Epson Corporation | Paper recycling system and paper recycling method |
| JP2020084396A (en) * | 2018-11-30 | 2020-06-04 | セイコーエプソン株式会社 | Defibration apparatus, regeneration apparatus and defibration method |
| US10704198B2 (en) | 2015-01-13 | 2020-07-07 | Seiko Epson Corporation | Sheet manufacturing apparatus and sheet manufacturing method |
| US11891753B2 (en) | 2020-05-22 | 2024-02-06 | Seiko Epson Corporation | Fiber structure manufacturing apparatus, method of manufacturing fiber structure, and fiber structure |
-
1993
- 1993-07-12 JP JP5195146A patent/JPH0726451A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8882965B2 (en) | 2011-01-12 | 2014-11-11 | Seiko Epson Corporation | Paper recycling system and paper recycling method |
| US9194081B2 (en) | 2011-01-12 | 2015-11-24 | Seiko Epson Corporation | Paper recycling device and paper recycling method |
| US9435078B2 (en) | 2011-01-12 | 2016-09-06 | Seiko Epson Corporation | Paper recycling device and paper recycling method |
| US9636847B2 (en) | 2011-01-12 | 2017-05-02 | Seiko Epson Corporation | Paper recycling device and paper recycling method |
| US9890499B2 (en) | 2011-01-12 | 2018-02-13 | Seiko Epson Corporation | Paper recycling device and paper recycling method |
| US10704198B2 (en) | 2015-01-13 | 2020-07-07 | Seiko Epson Corporation | Sheet manufacturing apparatus and sheet manufacturing method |
| JP2020084396A (en) * | 2018-11-30 | 2020-06-04 | セイコーエプソン株式会社 | Defibration apparatus, regeneration apparatus and defibration method |
| US11891753B2 (en) | 2020-05-22 | 2024-02-06 | Seiko Epson Corporation | Fiber structure manufacturing apparatus, method of manufacturing fiber structure, and fiber structure |
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Legal Events
| Date | Code | Title | Description |
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| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001003 |