JPH06255294A - Barrel for writing implement - Google Patents
Barrel for writing implementInfo
- Publication number
- JPH06255294A JPH06255294A JP5045540A JP4554093A JPH06255294A JP H06255294 A JPH06255294 A JP H06255294A JP 5045540 A JP5045540 A JP 5045540A JP 4554093 A JP4554093 A JP 4554093A JP H06255294 A JPH06255294 A JP H06255294A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- wood
- resin
- fine powder
- pigment
- 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.)
- Granted
Links
Landscapes
- Coating Apparatus (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、筆軸や各種ペンの軸な
ど筆記具用の軸にかかり、詳しくは木質様の外観を有す
る筆記具用軸に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing shaft such as a writing shaft or a shaft of various pens, and more particularly to a writing shaft having a woody appearance.
【０００２】[0002]
【従来の技術】筆は、墨や絵具をふくませるための穂
と、柄の部分となる軸からなっている。一般に、軸は竹
から作られることが多いが、木や骨角などからも作られ
ている。ところで、これら竹や木などは天然のものであ
ることから、その寸法を揃えるためには手頃な大きさに
成育したものを選んで伐採する必要があり、また寸法的
にはある程度揃えられても筆の軸に加工するには多くの
手間がかかる。したがって、これら天然のものから軸を
作るためには生産コストが高くなってしまい、当然完成
した筆自体も高いものになってしまうのである。このよ
うな現状から、天然の竹や木に代わるものとして、例え
ば筆ペンに見られるような樹脂性の軸も普及されつつあ
る。2. Description of the Related Art A brush is composed of ears for containing ink and paint, and a shaft which is a pattern portion. Generally, the shaft is often made of bamboo, but it is also made of wood or bone angles. By the way, since these bamboos and trees are natural, it is necessary to select and grow trees that are reasonably large in size in order to have the same size. It takes a lot of work to process the brush axis. Therefore, the production cost is high to make a shaft from these natural materials, and naturally the finished brush itself is also expensive. Under such circumstances, resinous shafts such as those found in brush pens are becoming popular as an alternative to natural bamboo and wood.
【０００３】[0003]
【発明が解決しようとする課題】ところが、特に筆で
は、持つ部分である軸が樹脂性であると、天然の竹や木
と異なり手になじみにくく、また外観上も安っぽく見え
ることから、高級な筆に樹脂の軸を用いるには難があ
る。一方、筆ペンなどにおいても、木目などの木質様を
付与し、手作り感を付加して高級感を出し、これによっ
て付加価値を高め、他社製品と差をつけようといった試
みも見受けられる。しかしながら、単に樹脂成形品に木
質様を印刷しただけでは、握った感触も天然の木とは全
く異なり、また見た感じも十分な木質感が得られず、よ
って本来の目的である高級感や手作り感を与えるまでに
は至っていないのが実状である。However, especially with a brush, if the shaft, which is the holding part, is made of resin, it does not fit comfortably in the hand unlike natural bamboo or wood, and it looks cheap in appearance. It is difficult to use a resin shaft for a brush. On the other hand, it can be seen that even brush pens and the like have a woody appearance such as wood grain to give a feeling of luxury by adding a handmade feeling, thereby increasing added value and making a difference from other companies' products. However, simply printing a wood-like appearance on a resin molded product makes the grip feel completely different from that of natural wood, and it does not give a sufficient wood texture to look at. The reality is that it has not yet been handmade.
【０００４】本発明は前記事情に鑑みてなされたもの
で、その目的とするところは、筆や筆ペンなどの筆記具
用の軸として、特に天然の木に比べ遜色のない木質様を
有し、かつ量産が可能で天然のものに比べ安価に製造で
き、しかも軸表面の手触り感が柔らかく木質感に富んだ
軸を提供することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is as a shaft for a writing instrument such as a brush and a writing pen, which has a woody appearance comparable to that of natural wood, Moreover, it is to provide a shaft that can be mass-produced and can be manufactured at a lower cost than natural ones, and that has a soft feel on the shaft surface and a rich wooden texture.
【０００５】[0005]
【課題を解決するための手段】本発明における請求項１
記載の筆記具用軸では、磨砕処理が施され白色無機顔料
が表面に担持されたセルロース系微粉粒と、有色顔料
と、重合度が１０００程度の塩化ビニル樹脂とが混合さ
れペレット化されてなるカラーペレットが、押出成形も
しくは射出成形により筒状に成形されてなることを前記
課題の解決手段とした。請求項２記載の筆記具用軸で
は、磨砕処理が施され白色無機顔料が表面に担持された
セルロース系微粉粒と樹脂とが混合されペレット化され
てなる生地材ペレットと、磨砕処理が施され白色無機顔
料が表面に担持されたセルロース系微粉粒と樹脂と有色
顔料とが混合されペレット化されてなり、かつ前記生地
材ペレットより溶融温度が高い木質様形成材ペレットと
が混合され、該ペレット混合物が押出成形もしくは射出
成形により筒状に成形されてなることを前記課題の解決
手段とした。[Means for Solving the Problems] Claim 1 in the present invention
In the writing instrument shaft described above, finely divided cellulosic fine particles having a surface treated with a white inorganic pigment that has been subjected to a grinding treatment, a colored pigment, and a vinyl chloride resin having a degree of polymerization of about 1000 are mixed and pelletized. The color pellets are formed into a tubular shape by extrusion molding or injection molding, which is a means for solving the above problems. The writing instrument shaft according to claim 2, wherein the material material pellets obtained by mixing and pelletizing the cellulose-based fine powder particles having a surface treated with a white inorganic pigment and the resin are ground and subjected to the grinding treatment. The white inorganic pigment is mixed and pelletized by mixing cellulose-based fine powder particles having a surface and a resin and a colored pigment, and the wood-like forming material pellets having a higher melting temperature than the dough material pellets are mixed, The pellet mixture is formed into a tubular shape by extrusion molding or injection molding, which is a means for solving the above problems.
【０００６】[0006]
【作用】本発明における請求項１記載の筆記具用軸によ
れば、白色無機顔料を担持したセルロース系微粉粒が磨
砕処理されていることから、従来の木材を直接微粉状に
粉砕したものが繊維状であるのと異なり、その表面に繊
毛が少なく粒状となり、よって軸表面にけば立ちがな
く、しかもセルロース系微粉粒自体もその一部が軸表面
に臨んでいるため肌触りがよくなる。また、セルロース
系微粉粒が繊維状でなく粒状をなしているため、繊維状
のものが配合分散した際その繊維状部分が絡み合って団
子状、綿状になってしまうのと異なり、個々が独立した
状態で分散されることから、顔料担持微粉粒自体も樹脂
に対し極めて分散性が良くなり、したがって成形されて
得られた筒状体についても十分に均一な材質のものとな
る。According to the writing instrument shaft of the first aspect of the present invention, since the cellulose-based fine powder particles carrying the white inorganic pigment are ground, the conventional wood is directly pulverized into fine powder. Unlike the fibrous shape, the surface has few cilia and becomes granular, so that the shaft surface is not fluffy, and the cellulose fine particles themselves are partly exposed to the shaft surface, so that the surface feels good. In addition, since the cellulose-based fine powder particles are not fibrous but are granular, when fibrous substances are compounded and dispersed, the fibrous parts become entangled to form dumplings or cotton-like ones. Since it is dispersed in this state, the pigment-carrying fine powder particles themselves also have extremely good dispersibility in the resin, and therefore the cylindrical body obtained by molding is also of a sufficiently uniform material.
【０００７】さらに、セルロース系微粉粒が繊維状でな
く粒状をなしているため、従来の繊維状木粉のごとく水
（湿気を含む）、溶剤を吸着しあるいはこれを放出する
ことに起因する伸縮が極めて少なく、よってこれを含有
して形成された軸は寸法安定性に極めて優れたものとな
る。また、磨砕処理を施しかつ表面に白色無機顔料を担
持したセルロース系微粉粒を骨材としていることによ
り、該微粉粒による樹脂の吸着・吸い込みが極めて少な
くなって成形歪みを生ずることがほとんどなくなる。Further, since the cellulose-based fine powder particles are not fibrous but granular, they expand and contract due to adsorbing or releasing water (including moisture) and solvent like conventional fibrous wood powder. Is extremely small, and thus the shaft formed by containing it has extremely excellent dimensional stability. In addition, by using cellulose fine powder particles, which have been subjected to a grinding treatment and carrying a white inorganic pigment on the surface, as an aggregate, the adsorption / suction of resin by the fine powder particles is extremely reduced and molding distortion hardly occurs. .
【０００８】また、この筆記具用軸にあっては、セルロ
ース系微粉粒が白色無機顔料を担持していることから担
持前に比べ耐熱性が向上していることにより、単に木粉
等セルロース系微粉粒を配合させ成形する場合に比べ成
形時の熱影響が少なく、よって色や形状の変化など変質
が抑制される。また、顔料を担持したことによってセル
ロース系微粉粒はその表面が覆われ、これにより微粉粒
中に含まれるリグニンや木酸が成形時に放出されること
が抑制されるため、該リグニンや木酸の放出に起因する
成形不良が防止される。Further, in this writing instrument shaft, since the cellulose-based fine powder particles carry the white inorganic pigment, the heat resistance is improved as compared with that before the support. Compared with the case of blending with granules, the heat effect at the time of molding is less than that in the case of molding, so that deterioration such as change in color or shape is suppressed. Further, the surface of the cellulose-based fine powder particles is covered by supporting the pigment, thereby suppressing the release of lignin and formic acid contained in the fine powder particles during molding. Molding defects due to release are prevented.
【０００９】また、この筆記具用軸は、重合度１０００
程度の塩化ビニル樹脂を用いたカラーペレットを、押出
成形もしくは射出成形することによって形成したもので
あるから、成形時に塩化ビニル樹脂が融合せず分離した
状態となり、これによって顔料による着色部が押し出し
方向もしくは射出方向に筋状に形成される。そして、こ
の筋状の着色部が天然の木目に極めて近い木目模様とな
る。The writing instrument shaft has a degree of polymerization of 1000.
Since it is formed by extrusion molding or injection molding of color pellets using vinyl chloride resin of a certain degree, the vinyl chloride resin does not fuse and separates at the time of molding, which causes the pigmented part to be extruded in the extrusion direction. Alternatively, it is formed in a stripe shape in the ejection direction. Then, the stripe-shaped colored portion has a wood grain pattern extremely close to the natural grain.
【００１０】本発明における請求項２記載の筆記具用軸
によれば、生地材ペレットとこれより溶融温度の高い木
質様形成材ペレットとのペレット混合物が、押出成形も
しくは射出成形によって成形されるので、成形時、木質
様形成材ペレットが生地材ペレットに比べ溶融までの時
間が長く、したがってこれを利用し予め成形条件を設定
しておくことにより、木質様形成材ペレット中の有色顔
料が成形中の溶融材中に規則的に、あるいは均一に流れ
ることなく、不規則に流れて筋状の着色部を形成する。
そして、この筋状の着色部が天然の木目に極めて近い木
目模様となる。しかも、各ペレット中のセルロース系微
粉粒がその表面に白色無機顔料を担持しているので、得
られる成形体中において、該微粉粒が有色顔料より表面
側にくることによってその下の有色顔料の色が隠蔽さ
れ、これにより有色顔料によって形成される成形体表面
の着色部はその色や太さなどがきわめて不均一なものと
なり、一層天然の木目模様に近いものとなる。According to the writing instrument shaft of the second aspect of the present invention, the pellet mixture of the dough material pellets and the wood-like forming material pellets having a higher melting temperature than that is formed by extrusion molding or injection molding. During molding, the wood-like forming material pellets take longer to melt than dough material pellets.Therefore, by setting the molding conditions in advance using this, the colored pigment in the wood-like forming material pellets It does not flow regularly or uniformly in the molten material, but flows irregularly to form streaky colored portions.
Then, the stripe-shaped colored portion has a wood grain pattern extremely close to the natural grain. Moreover, since the cellulosic fine powder particles in each pellet carry a white inorganic pigment on the surface thereof, in the obtained molded product, the fine powder particles come closer to the surface side than the colored pigment, thereby making The color is concealed, so that the colored portion of the surface of the molded body formed by the colored pigment becomes extremely uneven in color, thickness, and the like, and becomes closer to a natural wood grain pattern.
【００１１】[0011]
【実施例】以下、本発明を詳しく説明する。本発明にお
ける請求項１記載の筆記具用軸は、カラーペレットを原
料とし、このカラーペレットを円筒状に押出成形もしく
は射出成形することによって得られたものである。原料
となるカラーペレットは、磨砕処理が施され、かつ白色
無機顔料が表面に担持されたセルロース系微粉粒と、有
色顔料と、重合度が１０００程度の塩化ビニル樹脂とが
混合されペレット化されたものである。The present invention will be described in detail below. The writing instrument shaft according to the first aspect of the present invention is obtained by using color pellets as a raw material and subjecting the color pellets to extrusion molding or injection molding into a cylindrical shape. The color pellets, which are the raw material, are subjected to grinding treatment, and the cellulose-based fine powder particles on the surface of which the white inorganic pigment is supported, the colored pigments, and the vinyl chloride resin having a degree of polymerization of about 1000 are mixed and pelletized. It is a thing.
【００１２】白色無機顔料を担持するセルロース系微粉
粒としては、木材の粗粉砕物、バカスの粗粉砕物、稲藁
の粗粉砕物等の各種植物細胞体の原料材粗粉砕物を磨砕
処理することによって得られたものが用いられる。ここ
で、磨砕処理とは、粉砕処理と研磨処理とを併せ持つ処
理を言うものであり、これら粉砕処理と研磨処理とを同
時に行う処理であっても、粉砕処理を行った後研磨処理
を行う二工程からなる処理であってもよい。すなわち、
ここで言う磨砕処理とは、後述するように粗粉砕物から
微粉砕物にする粉砕処理と、微粉砕された粉粒を、繊維
状態のものが絡み合い、その表面が繊毛で覆われている
状態の粉粒形状から、表面に繊毛が少ない状態となるよ
うに表面研磨する研磨処理とを併せた処理を指している
のである。As the cellulosic fine particles carrying the white inorganic pigment, coarsely pulverized materials of various plant cell bodies such as coarsely pulverized wood, coarsely crushed bacas, coarsely crushed rice straw, etc. are subjected to grinding treatment. What was obtained by doing is used. Here, the grinding process means a process having both a grinding process and a polishing process. Even if the grinding process and the polishing process are simultaneously performed, the grinding process is performed after the grinding process is performed. It may be a two-step process. That is,
The grinding process here means a crushing process for converting a coarsely pulverized product into a finely pulverized product as described later, and finely pulverized powder particles are entangled in a fiber state, and the surface thereof is covered with cilia. This refers to a process in which a polishing process for polishing the surface so that the state of less cilia on the surface is changed from the powder particle shape of the state.
【００１３】原料材の粗粉砕物を得るには、そのチップ
等を機械的な衝撃破砕により粉砕して１５０メッシュ、
好ましくは１２０メッシュよりも細かい粒径の粗粉砕粉
を得る。ここで機械的な粉砕には、例えばインペラーミ
ル（ＩＭＰ−２５０；株式会社セイシン企業製）が好適
に使用される。そして、このような原料材粉砕物の磨砕
処理としては、例えば図１に示すボールミルによって行
うのが好ましい。このボールミルは、大気解放型のミル
本体１の周壁に冷却ジャケット２を設けたもので、供給
パイプ８から冷却ジャケット２内に冷却水を供給し、排
水パイプ９から排出することで冷却水を循環させ、これ
によってミル本体１内の温度を予め設定した温度、例え
ば８０℃以下となるようにするものである。In order to obtain a coarsely crushed material, the chips etc. are crushed by mechanical impact crushing to obtain 150 mesh,
Preferably, coarsely pulverized powder having a particle size smaller than 120 mesh is obtained. Here, for mechanical pulverization, for example, an impeller mill (IMP-250; manufactured by Seishin Enterprise Co., Ltd.) is preferably used. The grinding treatment of the pulverized raw material material is preferably performed by, for example, the ball mill shown in FIG. In this ball mill, a cooling jacket 2 is provided on the peripheral wall of an atmosphere-releasing mill body 1. Cooling water is circulated by supplying cooling water from a supply pipe 8 into the cooling jacket 2 and discharging it from a drain pipe 9. By doing so, the temperature inside the mill body 1 is set to a preset temperature, for example, 80 ° C. or lower.
【００１４】ここで、ミル本体１の上部にはモータ５が
配設されており、このモータ５の底部にはミル本体１内
のボール３を攪拌するロータ４が配設されている。ロー
タ４は、モータ５の駆動によって回転し、ボール３と被
磨砕処理物とを攪拌することにより、これらを機械的に
接触させるものである。また、ミル本体１の錐形下部に
はバルブ６で開閉される取出し口７が設けられており、
磨砕処理後の被磨砕処理物を排出できるようになってい
る。A motor 5 is provided above the mill body 1, and a rotor 4 for agitating the balls 3 in the mill body 1 is provided at the bottom of the motor 5. The rotor 4 is rotated by the drive of the motor 5 and agitates the ball 3 and the object to be ground to bring them into mechanical contact with each other. In addition, an outlet 7 that is opened and closed by a valve 6 is provided on the lower part of the cone of the mill body 1.
The material to be ground after the grinding processing can be discharged.
【００１５】このボールミルのミル本体１内に装填され
るボール３は、外径３mm〜５mmのセラミックスボール、
特にジルコニア系やアルミナ系のセラミックスボールを
用いるのが好ましく、ステンレス、スチール等の金属製
のボールの使用は避けるのが好ましい。なぜなら、ステ
ンレス、スチール製等の金属製のボールでは、木粉等の
粉砕セルロース系粉がボールの表面に結着し、あるいは
金属製ボール相互の接触に伴う発熱によって粉砕粉に変
質をもたらすおそれがあり、また金属製ボールのかけら
等が発生し、粉砕セルロースの表面にそのかけらが担持
されて所望する微粉粒と異質のものになるおそれがある
からである。なお、この乾式ボールミルは密閉タイプで
あっても大気解放タイプであっても良いが、密閉タイプ
を採用した場合にはミル内に窒素ガス等の不活性ガスを
充填して用いるのが好ましい。The balls 3 loaded in the mill body 1 of this ball mill are ceramic balls having an outer diameter of 3 mm to 5 mm,
In particular, it is preferable to use zirconia-based or alumina-based ceramic balls, and it is preferable to avoid using balls made of metal such as stainless steel and steel. This is because in the case of metal balls such as stainless steel and steel, crushed cellulosic powder such as wood powder may adhere to the surface of the balls, or the pulverized powder may be deteriorated due to heat generated by mutual contact between the metal balls. This is also because there is a possibility that fragments of metal balls or the like will be generated, and the fragments will be carried on the surface of the pulverized cellulose and become different from the desired fine powder particles. The dry ball mill may be either a closed type or an open type, but when the closed type is adopted, it is preferable to fill the mill with an inert gas such as nitrogen gas before use.
【００１６】また、このボールミルでは、使用ボール３
の表面温度が９０℃〜１２０℃の範囲となるように調整
され、ミル本体１の室内温度が８０℃を超えないよう調
整されることにより、前記の原料材粉砕物の磨砕処理に
加えてその乾燥処理も同時に行われる。ここで、使用ボ
ール３の温度制御については、ミル本体１の容量と、こ
のミル本体１内に投入されるボール３の量と、ボール３
の材質、寸法ならびに投入粉砕物の投入温度、量、含有
水分量とに基づき、攪拌速度ならびにミル本体１の周面
に設けた冷却ジャケット２による冷却量等を調整するこ
とによって行われる。Further, in this ball mill, the used balls 3
In addition to the grinding treatment of the pulverized raw material as described above, the surface temperature of the raw material is adjusted to be in the range of 90 ° C to 120 ° C, and the room temperature of the mill body 1 is adjusted not to exceed 80 ° C. The drying process is also performed at the same time. Here, regarding the temperature control of the used balls 3, the capacity of the mill main body 1, the amount of the balls 3 put into the mill main body 1, the ball 3
The stirring speed, the cooling amount by the cooling jacket 2 provided on the peripheral surface of the mill body 1, and the like are adjusted based on the material and size, the temperature and amount of the charged pulverized material, and the water content.
【００１７】なお、ボール３の表面温度は、対象材料に
よっても異なるものの、例えば木材粉の場合には１００
℃〜１２０℃の範囲にするのが、磨砕の効率の点から好
ましい。ただし、磨砕に長時間を要する場合には暴爆の
防止の点から９０℃〜１００℃であることが望ましい。
また、磨砕において暴爆を生ずる危険のある場合には、
ミル本体１内の酸素濃度を１５％以内とするのが好まし
く、その場合には例えばボールミル内に連続して窒素ガ
スを供給するといった方法を採用してもよい。The surface temperature of the ball 3 varies depending on the target material, but is 100 in the case of wood powder, for example.
It is preferable to set the temperature in the range of ℃ to 120 ℃ from the viewpoint of grinding efficiency. However, when grinding takes a long time, it is preferably 90 ° C to 100 ° C from the viewpoint of preventing explosion.
In addition, if there is a danger of explosion in grinding,
The oxygen concentration in the mill body 1 is preferably within 15%, and in that case, for example, a method of continuously supplying nitrogen gas into the ball mill may be adopted.
【００１８】このようなボールミルによる磨砕処理によ
れば、ボール３の回転に伴って生ずる摩擦熱によりミル
本体１の内部温度が上昇し、一方冷却ジャケット２に循
環される冷却水よってミル本体１内の温度およびボール
３の表面温度が前記した範囲に調節されることにより、
原料材粉砕物が粉砕されると同時に強い加熱条件下にお
かれて乾燥せしめられ、これによって粒径が所望する範
囲、例えば１００μｍ以下に揃えられ、しかも含有水分
が２.０重量％以下に調整されるのである。また、この
処理によれば、粗粉状態で投入された原料材粉砕物にボ
ール３が接触することにより、該ボール３に接触した原
料粉砕物は粉砕されて微粉砕物となるとともに、その表
面が研磨されることによって繊毛部分が非常に少ない表
面を有する微粉粒となる。According to such a grinding treatment by the ball mill, the internal temperature of the mill body 1 rises due to the frictional heat generated as the balls 3 rotate, while the cooling water circulated in the cooling jacket 2 causes the mill body 1 to circulate. By adjusting the internal temperature and the surface temperature of the ball 3 within the above range,
At the same time as the raw material pulverized product is pulverized and dried under a strong heating condition, the particle size is adjusted to a desired range, for example, 100 μm or less, and the water content is adjusted to 2.0 wt% or less. Is done. Further, according to this treatment, when the balls 3 come into contact with the raw material pulverized product charged in a coarse powder state, the raw material pulverized product contacting the balls 3 is pulverized into a fine pulverized product, and the surface thereof is Is ground into fine powder particles having a surface with very few cilia.
【００１９】すなわち、原料材粉砕物はボール３の表面
に接触した際、機械的に圧潰されかつ磨耗されて粉砕・
研磨され、これと同時に加熱・乾燥されることから、含
有水分が効率良く取り除かれるのである。また、ボール
３から離脱した際急速に冷却されることから、加熱−冷
却の繰返しを受けることによって原料材粉砕物中の繊維
が膨縮作用を受けるとともに、急速に乾燥され、これに
よって繊維の先端部がボール３によって効率良く磨砕さ
れ、結果として周面に繊毛の少ない、独立した粒形状を
なす磨砕処理セルロース系微粉粒が得られるのである。
そして、このようにして得られたセルロース系微粉粒を
分級し、所望する範囲の粒径（例えば１〜１０μｍ、１
０〜２０μｍ、２０〜５０μｍ、５０〜１００μｍ）に
揃え、白色無機顔料を担持するための本発明のセルロー
ス系微粉粒とする。That is, when the crushed raw material is brought into contact with the surface of the ball 3, it is mechanically crushed and abraded to crush and
Since it is polished and heated and dried at the same time, the water content is efficiently removed. Moreover, since the fibers in the pulverized raw material are subjected to expansion and contraction by being repeatedly subjected to heating and cooling, they are rapidly dried when they are separated from the balls 3, so that the tips of the fibers are The parts are efficiently ground by the balls 3, and as a result, ground cellulosic fine powder particles having an independent particle shape with less cilia on the peripheral surface can be obtained.
Then, the cellulosic fine powder particles thus obtained are classified to have a particle size in a desired range (for example, 1 to 10 μm, 1
0 to 20 μm, 20 to 50 μm, 50 to 100 μm), and the cellulose-based fine powder particles of the present invention for supporting a white inorganic pigment.
【００２０】また、原料粉砕物の磨砕処理としては、図
１に示すボールミルに代えて、例えば図２に示すような
粉砕機３０を用いて行うこともできる。この粉砕機３０
は、石うすの原理を利用したもので、２枚の砥石３１、
３１を所定の間隙を介して対向させ、これらの間に原料
粉砕物を入れた後、一方の砥石３１を高速回転させるこ
とによって粉砕処理および研磨処理を、すなわち磨砕処
理を行うものである。Further, the grinding process of the crushed raw material can be carried out by using a crusher 30 as shown in FIG. 2 instead of the ball mill shown in FIG. This crusher 30
Is based on the principle of stone thinning, and is made up of two grindstones 31,
After the material 31 is opposed to each other through a predetermined gap and the raw material pulverized material is placed between them, one grinding stone 31 is rotated at a high speed to perform the pulverizing processing and the polishing processing, that is, the grinding processing.
【００２１】ここで、砥石３１は、その内面が中心部に
いくに連れて漸次上方あるいは下方に傾斜する皿型のも
のであり、これらはその中央部間が広く、周辺部間が狭
くなるよう対向配置されて用いられるものである。ま
た、これら砥石３１は、図３に示すようにその中央部に
取り付け用の孔３２を形成したドーナッツ板状のもの
で、その内面に多数の送り溝３３…を形成したものであ
る。送り溝３３は、砥石３１の回転によって生じる遠心
力により、被処理物を砥石３１の半径方向に無理なく案
内するためのものである。Here, the grindstone 31 is a dish type in which the inner surface thereof gradually inclines upward or downward as it goes to the center, and these are wide in the central part and narrow in the peripheral part. They are arranged so as to face each other. As shown in FIG. 3, these grindstones 31 are donut plate-shaped with a mounting hole 32 formed in the center thereof, and a large number of feed grooves 33 ... Are formed on the inner surface thereof. The feed groove 33 is for reasonably guiding the object to be processed in the radial direction of the grindstone 31 by the centrifugal force generated by the rotation of the grindstone 31.
【００２２】このような粉砕機３０によって原料粉砕物
の磨砕処理を行うには、２枚の砥石３１、３１のそれぞ
れの中央部間に原料粉砕物を投入し、その後一方の砥石
３１を高速回転する。すると、原料粉砕物は２枚の砥石
３１、３１間で遠心力、衝撃力、剪断力等を受けて漸次
粉砕され、小径となるに連れて遠心力により送り溝３３
…に沿って半径方向外周側に移動せしめられ、さらにそ
の過程で衝撃力、剪断力を受けて粉砕されるとともにそ
の周面（表面）が研磨処理され、結果として磨砕処理さ
れて周面に繊毛の少ない、独立した粒形状をなす磨砕処
理セルロース系微粉粒となるのである。In order to grind the crushed raw material with such a crusher 30, the raw crushed material is put between the central portions of the two grindstones 31, 31 and then one grindstone 31 is moved at high speed. Rotate. Then, the raw material crushed product is gradually crushed by the centrifugal force, the impact force, the shearing force, etc. between the two grindstones 31, 31, and the feed groove 33 is crushed by the centrifugal force as the diameter becomes smaller.
... is moved to the outer peripheral side in the radial direction, and in the process, it is subjected to impact force and shearing force and crushed, and its peripheral surface (surface) is polished, and as a result, crushed to the peripheral surface. It becomes milled cellulosic fine particles with less cilia and an independent particle shape.
【００２３】そして、このようにして得られたセルロー
ス系微粉粒についても、ボールミルによる場合と同様に
分級され所望する範囲の粒径に揃えられることにより、
白色無機顔料を担持するための本発明のセルロース系微
粉粒となる。担持される白色無機顔料としては、酸化チ
タン、リトポン、ホワイトカーボン、炭酸カルシウム等
が使用可能であるが、特に酸化チタンが、得られる筆記
具用軸に十分な白色度を付与するうえで好ましい。ま
た、この白色無機顔料の粒径については、前記セルロー
ス系微粉粒より十分に小さく調整されたものとされる。The cellulosic fine powder particles obtained in this way are classified in the same manner as in the case of using a ball mill and the particle size is adjusted to a desired range.
The cellulosic fine powder particles of the present invention for supporting a white inorganic pigment are obtained. Titanium oxide, lithopone, white carbon, calcium carbonate and the like can be used as the white inorganic pigment to be carried, but titanium oxide is particularly preferable in order to impart sufficient whiteness to the resulting writing instrument shaft. Further, the particle size of the white inorganic pigment is adjusted to be sufficiently smaller than that of the cellulose fine powder particles.
【００２４】また、該白色無機顔料の前記セルロース系
微粉粒への担持方法としては、図１に示したボールミル
によってセルロース系微粉粒を得た場合、例えば前記セ
ルロース系微粉粒と白色顔料とを混合し、得られた混合
粒子を気相中に分散させながら衝撃力を主体とする機械
的熱的エネルギーを粒子に付与し、セルロース系微粉粒
を母粒子とし、この母粒子の周面に顔料粒子を担持させ
るといった方法が採用される。すなわち、この方法はセ
ルロース系微粉粒に比べ顔料粒子の方が硬いことを利用
した方法であり、このような硬度の違いによって顔料粒
子をセルロース系微粉粒の表面にめりこませ、あるいは
喰い込ませた状態に担持せしめ得るのである。なお、ボ
ールミルによって得られたセルロース系微粉粒は、前述
したように磨砕処理と同時に乾燥処理もなされているこ
とから、担持処理に供すまでの保管を乾燥状態が十分に
保てるようにしておけば、担持処理後特に乾燥処理を行
うことなく後述する成形処理に供すことができる。As a method of supporting the white inorganic pigment on the cellulose fine powder particles, when the cellulose fine powder particles are obtained by the ball mill shown in FIG. 1, for example, the cellulose fine powder particles and the white pigment are mixed. Then, the resulting mixed particles are dispersed in the gas phase to impart mechanical thermal energy mainly composed of impact force to the particles, and the cellulose-based fine powder particles are used as the mother particles, and the pigment particles are provided on the peripheral surface of the mother particles. A method of supporting the is adopted. That is, this method is a method utilizing the fact that the pigment particles are harder than the cellulosic fine powder particles, and the pigment particles are infiltrated or bited into the surface of the cellulosic fine powder particles by such a difference in hardness. It can be supported in a closed state. The cellulosic fine particles obtained by the ball mill are subjected to the drying treatment at the same time as the grinding treatment as described above, so if the storage until the loading treatment is carried out, it is necessary to keep the dried state sufficiently. After the carrying treatment, the material can be subjected to a molding treatment described later without performing a drying treatment.
【００２５】また、他の担持方法として、特に図２に示
した粉砕機３０を用いてセルロース系微粉粒を得た場合
には、セルロース系微粉粒と白色顔料との混合粒子を図
１に示したようなボールミルに投入し、再度磨砕処理を
施すことによってセルロース系微粉粒周面に白色無機顔
料粒子を担持させるのが好ましい。なぜなら、ボールミ
ルによる磨砕処理では前述したようにその処理の過程で
摩擦熱が生じ、結果として乾燥処理が同時に行われるか
らである。すなわち、白色顔料担持セルロース系微粉粒
としては、後述する成形処理に際してはその含水率が例
えば３重量％以下程度に低いものであることが成形上好
ましく、したがって予め乾燥処理を施しておくことが望
ましいものの、ボールミル法によって担持処理がなされ
た場合にはその処理過程にて乾燥処理も同時になされる
ことから、得られた担持微粉粒をそのまま成形処理に供
すことができるからである。As another supporting method, when cellulose fine powder particles are obtained by using the grinder 30 shown in FIG. 2, mixed particles of the cellulose fine powder particles and the white pigment are shown in FIG. It is preferable that the white inorganic pigment particles are supported on the peripheral surface of the cellulosic fine powder particles by throwing them into a ball mill as described above and performing the grinding treatment again. This is because, in the grinding process by the ball mill, frictional heat is generated in the process of the grinding process as described above, and as a result, the drying process is simultaneously performed. That is, it is preferable that the white pigment-carrying cellulose-based fine particles have a low water content of, for example, about 3% by weight or less in the molding treatment described later in terms of molding, and thus it is desirable to perform a drying treatment in advance. However, when the supporting treatment is carried out by the ball mill method, the drying treatment is also carried out at the same time as the supporting treatment, so that the obtained supported fine powder particles can be directly subjected to the molding treatment.
【００２６】このような担持処理を施すことにより、図
４に示すように白色無機顔料粒子１０…はセルロース系
微粉粒１１の周面に喰い込み状態で担持されたものとな
る。なお、担持させる白色無機顔料の量としては、母粒
子となるセルロース系微粉粒の周面に重なり合って該周
面を覆いつくす量が上限とされるが、下限については軸
の所望する色相に応じて適宜決定される。By carrying out such a carrying treatment, the white inorganic pigment particles 10 are carried in the peripheral surface of the cellulosic fine powder particles 11 in a state of being bitten as shown in FIG. As the amount of the white inorganic pigment to be supported, the upper limit is the amount that overlaps the peripheral surface of the cellulosic fine powder particles to be the base particles and covers the peripheral surface, but the lower limit depends on the desired hue of the shaft. It is decided as appropriate.
【００２７】このようにして得られた顔料担持セルロー
ス系微粉粒は、白色無機顔料の色調とほぼ同一の色調を
有するものとなり、該担持微粉粒の製造過程においても
保管の過程においてもその凝集が認められなかった。カ
ラーペレットを形成する材料である有色顔料とは、本発
明においては白色顔料を除く酸化鉄等の茶色顔料やカー
ボン等の黒色顔料を指しており、得られる板材に要求さ
れる色相に応じて従来公知の顔料が適宜選択され使用さ
れる。The pigment-supporting cellulose-based fine powder particles thus obtained have a color tone almost the same as the color tone of the white inorganic pigment, and the agglomeration of the supported fine powder particles occurs both during the production process and during the storage process. I was not able to admit. In the present invention, the colored pigment that is the material forming the color pellets refers to a brown pigment such as iron oxide other than the white pigment and a black pigment such as carbon, which is conventionally according to the hue required for the obtained plate material. Known pigments are appropriately selected and used.
【００２８】また、カラーペレットを形成する材料であ
る樹脂としては、重合度が１０００程度の塩化ビニル樹
脂が用いられる。ここで、重合度を１０００程度とした
のは、例えば８００程度では押し出し成形時に樹脂同士
が融合し、結果として得られる板材表面に有色顔料によ
る着色部が筋状に形成され、これが木目模様になるとい
った後述する効果が薄れるからである。また、このよう
なカラーペレットにおいて、塩化ビニル樹脂と白色無機
顔料担持のセルロース系微粉粒との配合比率としては、
重量比で、塩化ビニル樹脂：セルロース系微粉粒＝７
０：３０〜５０：５０程度とされる。なぜなら、セルロ
ース系微粉粒の配合比率が３０重量％（ただし、塩化ビ
ニル樹脂とセルロース系微粉粒との総量を１００重量％
として）未満では、得られる板材に十分な木質様が得ら
れないからであり、５０重量％を越えると、押し出し成
形が十分行えなかったり、得られる板材の強度が不足す
るなどの不都合を生じる恐れがあるからである。A vinyl chloride resin having a degree of polymerization of about 1000 is used as a resin which is a material for forming color pellets. Here, the degree of polymerization is set to about 1000, for example, at about 800, the resins are fused with each other at the time of extrusion molding, and a colored portion with a colored pigment is formed in a stripe shape on the surface of the resulting plate material, which becomes a wood grain pattern. This is because the effects described later are weakened. In addition, in such a color pellet, as a compounding ratio of the vinyl chloride resin and the cellulose-based fine powder particles carrying a white inorganic pigment,
By weight ratio, vinyl chloride resin: cellulosic fine particles = 7
It is set to about 0:30 to 50:50. Because, the blending ratio of the cellulose-based fine particles is 30% by weight (however, the total amount of the vinyl chloride resin and the cellulose-based fine particles is 100% by weight.
If less than 50% by weight, sufficient wood-like appearance cannot be obtained, and if it exceeds 50% by weight, there is a possibility that extrusion molding cannot be sufficiently performed or the strength of the obtained sheet material is insufficient. Because there is.
【００２９】なお、有色顔料については、得られる軸に
要求される色相に応じて適宜量が配合される。そして、
このようなカラーペレットが１５０〜１８０℃程度で所
望する寸法の円筒形状、すなわち筆の軸や筆ペン等各種
ペンの軸の形状に成形されることにより、図５に示すよ
うな本発明の軸２０が得られるのである。このようにし
て得られた軸２０は、セルロース系微粒子が白色無機顔
料を担持しこれにより該微粒子が白色顔料として機能す
ることから軸２０の素地が白色系となり、かつ有色顔料
により所望する木質様の色相に着色されるたものとな
る。しかも成形時に、塩化ビニル樹脂が十分融合せずし
たがって有色顔料による着色にむらが生じ、このむらに
よる着色部２１が押し出し方向に筋状に形成されること
から、結果としてこの筋状の着色部２１が天然の木目に
極めて近い木目模様となっている。The color pigment is blended in an appropriate amount depending on the hue required for the shaft to be obtained. And
By molding such a color pellet into a cylindrical shape having a desired size at about 150 to 180 ° C., that is, the shape of a shaft of a brush or a pen of various pens such as a pen, the shaft of the present invention as shown in FIG. 20 is obtained. In the shaft 20 thus obtained, the cellulose-based fine particles carry a white inorganic pigment, and the fine particles thus function as a white pigment. Therefore, the base of the shaft 20 becomes white, and the colored pigment makes it possible to obtain a desired woody appearance. It will be colored in the hue of. In addition, during molding, the vinyl chloride resin is not sufficiently fused, so that the coloring by the colored pigment becomes uneven, and the coloring portion 21 due to this unevenness is formed in a streak shape in the extrusion direction. As a result, the streak coloring portion 21 is formed. Is very close to the natural grain.
【００３０】なお、得られた軸２０については、仕上げ
処理としてその表面にカラークリアーやラッカーなどが
塗布される。そして、筆を作製するには、図５に示すよ
うな軸２０とは別に作製された穂２２の後端側を軸２０
の孔内に差し込み、さらに漆を塗って止めることにより
製品を得る。また、筆ペンを作製するには、穂の部分と
これの先端部に連通するインク溜めとを予め一体に形成
しておき、これのインク溜め部分を前記軸２０内に挿入
し、さらに穂の部分を軸２０に固定することによって製
品を得る。The shaft 20 thus obtained is coated with color clear or lacquer on its surface as a finishing treatment. Then, in order to manufacture the brush, the rear end side of the spikes 22 prepared separately from the shaft 20 as shown in FIG.
The product is obtained by inserting it into the hole of, and then applying lacquer and stopping. In order to manufacture a brush pen, a spike portion and an ink reservoir communicating with the tip portion of the brush pen are integrally formed in advance, the ink reservoir portion is inserted into the shaft 20, and The product is obtained by fixing the parts to the shaft 20.
【００３１】このようにして得られた筆記具用軸２０に
あっては、セルロース系微粉粒が磨砕処理されているこ
とから、その表面に繊毛が少なく粒状となっており、よ
って軸表面にけば立ちがなく、しかもセルロース系微粉
粒自体もその一部が軸表面に臨んでいるため肌触りがよ
くなり、したがってこれを握ると従来の樹脂製のものに
比べ木に近い感触が得られる。なお、前記実施例では本
発明の軸を円筒状のものとしたが、要求に応じ、例えば
正六角筒状のものなど、角筒状のものとしてもよい。In the writing instrument shaft 20 thus obtained, since the fine cellulose powder particles are ground, the surface of the writing device shaft 20 is granular with few cilia, so that the surface of the shaft is not covered. Since it does not stand up and the cellulose fine particles themselves partly face the surface of the shaft, they are soft to the touch. Therefore, when they are gripped, a feeling closer to wood than that of conventional resin can be obtained. Although the shaft of the present invention has a cylindrical shape in the above-mentioned embodiment, it may have a rectangular tube shape, such as a regular hexagonal tube shape, if required.
【００３２】本発明における請求項２記載の筆記具用軸
は、生地材ペレットとこの生地材ペレットより溶融温度
が高い木質様形成材ペレットとを所定比で混合し、該ペ
レット混合物を押出成形もしくは射出成形により所望形
状に成形して得られたものである。生地材ペレットは、
磨砕処理が施され白色無機顔料が表面に担持されたセル
ロース系微粉粒と樹脂とが混合されペレット化されたも
のである。このペレットの成分とされる樹脂としては、
塩化ビニル樹脂、ポリエチレン樹脂、ポリプロピレン樹
脂、フェノール樹脂、ＡＢＳ樹脂等各種のものが用いら
れるが、中でも塩化ビニル樹脂、ポリエチレン樹脂、ポ
リプロピレン樹脂がより好適である。According to a second aspect of the present invention, in the writing instrument shaft, a material material pellet and a wood-like forming material pellet having a melting temperature higher than that of the material material pellet are mixed at a predetermined ratio, and the pellet mixture is extruded or injected. It is obtained by molding into a desired shape. Dough material pellets
It is a mixture of pelletized cellulose-based fine particles having a surface treated with a white inorganic pigment and subjected to grinding treatment. As the resin used as a component of this pellet,
Various kinds of vinyl chloride resin, polyethylene resin, polypropylene resin, phenol resin, ABS resin and the like are used, but vinyl chloride resin, polyethylene resin and polypropylene resin are more preferable.
【００３３】また、磨砕処理が施され白色無機顔料が表
面に担持されたセルロース系微粉粒としては、前記請求
項１の筆記具用軸を成形するに際して用いられたものと
同一のものが用いられる。そして、このような白色顔料
担持セルロース系微粉粒と前記樹脂の粉末とが適宜比、
例えば重量比で、微粉粒：樹脂＝３０：７０〜５０：５
０程度の範囲となるよう混合され、ペレット化されるこ
とにより生地材ペレットが得られる。ペレット化につい
ては、例えば混合粉を多孔円形ノズルからひも状に押し
出し、これを切断するといった従来公知の手段によって
なされる。As the cellulose-based fine powder particles which are ground and have the white inorganic pigment carried on the surface thereof, the same ones as those used for molding the writing instrument shaft according to claim 1 are used. . Then, such a white pigment-carrying cellulose-based fine powder particles and the resin powder are appropriately ratioed,
For example, in a weight ratio, fine powder particles: resin = 30:70 to 50: 5
The dough material pellets are obtained by mixing and pelletizing in a range of about 0. Pelletization is performed by a conventionally known means such as extruding the mixed powder into a string shape from a porous circular nozzle and cutting the string.
【００３４】木質様形成材ペレットは、磨砕処理が施さ
れ白色無機顔料が表面に担持されたセルロース系微粉粒
と、樹脂と有色顔料とが混合されペレット化されたもの
であり、前記生地材ペレットに比べその溶融温度が高い
ものである。溶融温度については、具体的には生地材ペ
レットの溶融温度（℃）に比べ３％程度高い温度、例え
ば生地材ペレットが１８０℃であれば木質様形成材ペレ
ットは約１８５℃となるよう予め調製される。ここで、
木質様形成ペレットの溶融温度を生地材ペレットの溶融
温度より高くするためには、溶融温度を高めるための公
知の添加剤を加えたり、あるいは後述するように樹脂の
グレードを溶融温度が高いものに代えるといった方法が
採用される。The wood-like forming material pellets are pellets obtained by mixing finely divided cellulose-based powder particles having a surface treated with a white inorganic pigment and a resin and a colored pigment, and pelletized. Its melting temperature is higher than that of pellets. Regarding the melting temperature, specifically, a temperature that is about 3% higher than the melting temperature (° C.) of the dough material pellets, for example, if the dough material pellets are 180 ° C., the wood-like forming material pellets are prepared in advance at about 185 ° C. To be done. here,
In order to raise the melting temperature of the wood-like forming pellets higher than that of the dough material pellets, known additives for increasing the melting temperature may be added, or the resin grade may have a higher melting temperature as described later. The method of substituting is adopted.
【００３５】このペレットの成分とされる樹脂として
は、前記生地材ペレットに用いた樹脂、すなわち塩化ビ
ニル樹脂、ポリエチレン樹脂、ポリプロピレン樹脂等が
用いられる。なお、樹脂の選択に際しては、当然生地材
ペレットに用いた樹脂と同一種のものを用いるのが望ま
しい。また、樹脂のグレードについては、前述のごとく
最終的に得られる木質様形成材ペレットが生地材ペレッ
トよりその溶融温度が高くなるように、別のものを選択
することができる。磨砕処理が施され白色無機顔料が表
面に担持されたセルロース系微粉粒については、生地材
ペレットに用いたものと同様の処理により得られたもの
が用いられる。As the resin which is a component of the pellets, the resin used for the pellets of the dough material, that is, the vinyl chloride resin, the polyethylene resin, the polypropylene resin or the like is used. When selecting the resin, it is naturally desirable to use the same type of resin as the resin used for the pellets of the dough material. As for the resin grade, another one can be selected so that the wood-like forming material pellets finally obtained have a higher melting temperature than the dough material pellets as described above. As the cellulose-based fine powder particles that have been subjected to the grinding treatment and the white inorganic pigment is carried on the surface, those obtained by the same treatment as that used for the dough material pellets are used.
【００３６】また、有色顔料については、酸化鉄やカド
ミウムイエロー、カーボンブラックなどの無機顔料が一
種あるいは複数種所望する色相、すなわち得られる製品
の生地自体の色、および後述する木目模様の色に応じて
適宜選択され用いられる。そして、白色顔料担持セルロ
ース系微粉粒と前記樹脂の粉末と有色顔料が適宜比で混
合され、ペレット化されることにより木質様形成材ペレ
ットが得られる。混合比については、白色顔料担持微粉
粒と樹脂粉末との比は前記生地材ペレットと同様の範囲
の重量比とされ、有色顔料の配合比は全体の５〜３０重
量％程度とされる。なお、ペレット化については、生地
材ペレットと同様に従来公知の手段によってなされる。Regarding the colored pigment, one or more kinds of inorganic pigments such as iron oxide, cadmium yellow, carbon black, etc. are desired, that is, the color of the fabric of the obtained product itself and the color of the wood grain pattern described later. Are appropriately selected and used. Then, the white pigment-carrying cellulose-based fine powder particles, the resin powder, and the colored pigment are mixed in an appropriate ratio and pelletized to obtain wood-like forming material pellets. Regarding the mixing ratio, the ratio of the white pigment-carrying fine powder particles to the resin powder is a weight ratio in the same range as that of the material material pellets, and the mixing ratio of the colored pigments is about 5 to 30% by weight of the whole. Note that pelletization is performed by a conventionally known means, as in the case of the dough material pellets.
【００３７】このような生地材ペレットと木質様形成ペ
レットとが混合され、該ペレット混合物が押出成形もし
くは射出成形によって所望の筒形状に成形されることに
より、本発明の軸が得られる。生地材ペレットと木質様
形成ペレットとの混合比については、得られる軸の色相
や木質様形成材ペレット中の有色顔料の比率に基づいて
適宜決定されるが、通常は、生地材ペレット：木質様形
成材ペレット＝９０：１０〜９９：１（重量比）とされ
る。The dough material pellets and the wood-like shaped pellets are mixed and the pellet mixture is molded into a desired tubular shape by extrusion molding or injection molding, whereby the shaft of the present invention is obtained. The mixing ratio of the dough material pellets and the wood-like forming pellets is appropriately determined based on the hue of the shaft to be obtained and the ratio of the colored pigment in the wood-like forming material pellets. Forming material pellets = 90: 10 to 99: 1 (weight ratio).
【００３８】これらペレットの混合物を押出成形もしく
は射出成形するにあたっては、予め生地材ペレットの溶
融温度に合わせて成形温度を設定するとともに、成形時
間も生地材ペレットに合わせて設定する。このような条
件で成形を行うと、生地材ペレットは正常に溶融し成形
方向に均一に流れる。一方、木質様形成材ペレットは生
地材ペレットより溶融温度が高いため溶融はするもの
の、生地材ペレットに比べその溶融状態が十分でなく、
したがって流れも悪く不均一になる。When extrusion-molding or injection-molding a mixture of these pellets, the molding temperature is set in advance according to the melting temperature of the dough material pellets, and the molding time is also set according to the dough material pellets. When molding is performed under such conditions, the dough material pellets melt normally and flow uniformly in the molding direction. On the other hand, the wood-like forming material pellets melt because the melting temperature is higher than the dough material pellets, but the melting state is not sufficient compared to the dough material pellets,
Therefore, the flow is poor and non-uniform.
【００３９】そして、このように流れが悪く不均一にな
ることから、木質様形成材ペレット中の有色顔料も当然
均一に流れず、したがって得られた成形体は図６に示す
ようにその内部および表層部にて有色顔料による着色部
２１が不均一に散在する。また、成形体表面では、有色
顔料が成形方向に沿って不均一に流れることにより図５
に示したように着色部２１が筋状に現われ、これが天然
の木目模様にきわめて近い模様となる。しかも、特に成
形体の表層部においては、生地材ペレットあるいは木質
様形成材ペレット中の白色顔料を担持してなるセルロー
ス系微粉粒が着色部２１の上にくると、セルロース系微
粉粒に担持された白色顔料により着色部２１の色が隠蔽
されることから、図５に示した表面に見える着色部２１
（筋状の模様）に不均一な濃淡が生じ、これによって着
色部２１は一層天然の木目模様に近いものとなる。As a result of such poor flow and non-uniformity, the colored pigments in the wood-like forming material pellets naturally do not flow evenly, and the molded product thus obtained has internal and internal properties as shown in FIG. Colored portions 21 made of colored pigment are nonuniformly scattered in the surface layer portion. Further, on the surface of the molded body, the colored pigments flow non-uniformly along the molding direction, so that FIG.
As shown in FIG. 5, the colored portion 21 appears in a streak shape, which is a pattern very close to a natural wood grain pattern. Moreover, particularly in the surface layer portion of the molded body, when the cellulose-based fine powder particles carrying the white pigment in the dough material pellets or the wood-like forming material pellets come on the colored portion 21, they are carried by the cellulose-based fine powder particles. Since the color of the colored portion 21 is hidden by the white pigment, the colored portion 21 visible on the surface shown in FIG.
Non-uniform shading occurs in the (streak pattern), and the colored portion 21 becomes closer to a natural wood grain pattern.
【００４０】このような軸にあっては、生地材ペレット
と木質様ペレットとを所望する色相に応じて適宜比で混
合し、これを押出もしくは射出成形することによって容
易に得られたものであり、しかもその木質様が筋状の木
目模様に濃淡があり、また生地部においても木質様ペレ
ット中の有色顔料が不均一に流れることから人工的でな
い濃淡が形成され、結果として全体が極めて天然の木質
様に酷似したものとなる。Such a shaft is easily obtained by mixing the dough material pellets and the woody pellets in an appropriate ratio according to the desired hue, and extruding or injection molding the mixture. Moreover, the woody pattern has a light and shade in a streak-like wood grain pattern, and the non-artificial light and shade is formed in the dough part because the colored pigments in the woody pellets flow unevenly, and as a result, the whole is very natural. It looks very similar to wood.
【００４１】[0041]
【発明の効果】以上説明したように本発明の筆記具用軸
は、その成形時に塩化ビニル樹脂が十分融合せず、した
がって有色顔料による着色にむらが生じ、このむらによ
る着色部が押し出し方向に筋状に形成され、結果として
天然の木目に極めて近い木目模様を有したものとなって
いる。したがって、樹脂等の板材に木目模様を付与する
にあたっては、従来では一般にプリントや表面を研削し
たのち塗料を塗布するといった方法が採られていたが、
本発明の板材では単に押出成形もしくは射出成形のみで
木目模様を付与することができ、よって極めて生産性に
優れたものとなるので、結果として筆等の筆記具のコス
トを低減することができる。As described above, in the writing instrument shaft of the present invention, the vinyl chloride resin is not sufficiently fused at the time of molding, and therefore uneven coloring occurs due to the colored pigment, and the colored portion due to this unevenness is streaked in the extrusion direction. It has a grain-like shape and, as a result, has a grain pattern very close to that of the natural grain. Therefore, in order to impart a wood grain pattern to a plate material such as resin, conventionally, a method of applying a paint after grinding the print or the surface has been generally adopted,
With the plate material of the present invention, a wood grain pattern can be imparted only by extrusion molding or injection molding, and therefore, the productivity is extremely excellent, and as a result, the cost of a writing instrument such as a brush can be reduced.
【００４２】また、セルロース系微粉粒が磨砕処理され
ていることから、その表面に繊毛が少なく粒状となって
おり、よって軸表面にけば立ちがなく、しかもセルロー
ス系微粉粒自体もその一部が軸表面に臨んでいるため肌
触りがよくなり、したがってこれを握ると従来の樹脂製
のものに比べ木に近い感触が得られる。さらに、磨砕処
理が施され、かつ白色無機顔料を表面に担持したセルロ
ース系微粉粒を用いていることから、成形されて得られ
た筒状体が十分に均質でかつ成形歪みがなく寸法安定性
に優れたものとなる。Further, since the cellulosic fine particles are ground, the surface has a small number of cilia and is granular, so that the shaft surface is not fluffy, and the cellulosic fine particles themselves are one of them. Since the part faces the surface of the shaft, it feels good to the skin, and therefore, when it is gripped, a feeling closer to wood is obtained as compared with the conventional resin-made one. Furthermore, since the cellulose-based fine particles that have been ground and have a white inorganic pigment supported on the surface are used, the cylindrical body obtained by molding is sufficiently homogeneous and has no molding distortion and is dimensionally stable. It has excellent properties.
【００４３】請求項２記載の筆記具用軸は、生地材ペレ
ットと木質様形成材ペレットの溶融温度の違いにより木
質様形成材ペレット中の有色顔料が不規則、不均一に流
れて筋状の着色部が形成されているとともに、生地その
ものも不均一に着色されたものとなっており、この筋状
の着色部が天然の木目に極めて近い木目模様となること
などから表面が極めて天然の木質様を呈するものとな
る。しかも、各ペレット中のセルロース系微粉粒がその
表面に白色無機顔料を担持しているので、得られる成形
体中において、該微粉粒が有色顔料より表面側にくるこ
とによってその下の有色顔料の色が隠蔽され、これによ
り有色顔料によって形成される成形体表面の着色部がそ
の色や太さなどがきわめて不均一なものとなり、一層天
然のものに近い木質様を呈するものとなる。したがっ
て、本発明の軸は、このように天然の木質様に極めて近
い表面を有していることから、樹脂と同様の成形方法で
得られるため低い生産コストで得られるにもかかわらず
天然の木材からなるものとほぼ同等の外観が得られ、従
来代替品として用いられていた樹脂成形品に木目模様を
印刷したものに比べ格段の高級感が得られる。In the writing instrument shaft according to claim 2, colored pigments in the wood-like forming material pellets flow irregularly and non-uniformly due to a difference in melting temperature between the dough material pellets and the wood-like forming material pellets, resulting in streak coloring. The parts are formed, and the fabric itself is unevenly colored, and the streaky colored part has a wood grain pattern that is very close to the natural grain, so the surface is very natural wood-like. Will be presented. Moreover, since the cellulosic fine powder particles in each pellet carry a white inorganic pigment on the surface thereof, in the obtained molded product, the fine powder particles come closer to the surface side than the colored pigment, thereby making The color is concealed, so that the colored portion of the surface of the molded body formed by the colored pigment becomes extremely uneven in color and thickness, and has a woody appearance closer to that of a natural material. Therefore, since the shaft of the present invention has a surface extremely similar to that of natural wood, it can be obtained by a molding method similar to that of a resin, and thus can be obtained at a low production cost, but it is a natural wood. The appearance is almost the same as that of, and a much higher class feeling is obtained compared to the resin molded product used as a substitute product in the past with a wood grain pattern printed.
【図１】解放型のボールミルの要部破断正面図。FIG. 1 is a fragmentary front view of an open type ball mill.
【図２】磨砕処理に用いられる粉砕機の一例を示す概略
構成図。FIG. 2 is a schematic configuration diagram showing an example of a crusher used for a grinding process.
【図３】図２に示した粉砕機の砥石の一例を示す平面
図。3 is a plan view showing an example of a grindstone of the crusher shown in FIG.
【図４】本発明に使用されるセルロース系微粉粒の無機
顔料を担持した状態を示す断面図。FIG. 4 is a cross-sectional view showing a state in which a cellulosic fine-particle inorganic pigment used in the present invention is carried.
【図５】本発明の筆記具用軸の一例を示す斜視図。FIG. 5 is a perspective view showing an example of a writing instrument shaft of the present invention.
【図６】得られた軸の側断面拡大図。FIG. 6 is an enlarged side sectional view of the obtained shaft.
１ ミル本体 ３ ボール １０ 白色無機顔料粒子 １１ セルロース系微粉粒 ２０ 軸 ２１ 着色部 ３０ 粉砕機 1 Mill Main Body 3 Ball 10 White Inorganic Pigment Particle 11 Cellulose Fine Particle 20 Shaft 21 Coloring Part 30 Crusher
───────────────────────────────────────────────────── 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 Ｂ４３Ｋ 15/00 8906−2Ｃ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B43K 15/00 8906-2C
Claims (2)
担持されたセルロース系微粉粒と、有色顔料と、重合度
が１０００程度の塩化ビニル樹脂とが混合されペレット
化されてなるカラーペレットが、押出成形もしくは射出
成形により筒状に成形されてなることを特徴とする筆記
具用軸。1. A color pellet obtained by mixing finely divided cellulose-based fine particles having a surface treated with a white inorganic pigment, which has been subjected to a grinding treatment, a colored pigment, and a vinyl chloride resin having a degree of polymerization of about 1000 to form a pellet. Is a tubular shape formed by extrusion molding or injection molding.
持されたセルロース系微粉粒と樹脂とが混合されペレッ
ト化されてなる生地材ペレットと、磨砕処理が施され白
色無機顔料が表面に担持されたセルロース系微粉粒と樹
脂と有色顔料とが混合されペレット化されてなり、かつ
前記生地材ペレットより溶融温度が高い木質様形成材ペ
レットとが混合され、該ペレット混合物が押出成形もし
くは射出成形により筒状に成形されてなることを特徴と
する筆記具用軸。2. A dough material pellet obtained by mixing and pelletizing cellulose fine powder particles having a surface treated with a white inorganic pigment which has been subjected to a grinding treatment, and a white inorganic pigment which has been subjected to a grinding treatment. Cellulose fine powder particles supported on the surface, resin and colored pigment are mixed and pelletized, and wood-like forming material pellets having a higher melting temperature than the dough material pellets are mixed, and the pellet mixture is extruded Alternatively, a writing instrument shaft characterized by being formed into a cylindrical shape by injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04554093A JP3207960B2 (en) | 1993-03-05 | 1993-03-05 | Writing implement shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04554093A JP3207960B2 (en) | 1993-03-05 | 1993-03-05 | Writing implement shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06255294A true JPH06255294A (en) | 1994-09-13 |
| JP3207960B2 JP3207960B2 (en) | 2001-09-10 |
Family
ID=12722210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04554093A Expired - Fee Related JP3207960B2 (en) | 1993-03-05 | 1993-03-05 | Writing implement shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3207960B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620642A (en) * | 1993-03-05 | 1997-04-15 | Misawa Homes Co., Ltd. | Simulated wood product manufacturing method and simulated wood product |
| JPH1060124A (en) * | 1996-08-13 | 1998-03-03 | Toyoda Gosei Co Ltd | Molding of colored resin |
| WO1998052996A1 (en) * | 1997-05-20 | 1998-11-26 | M.A. Hannacolor | Improved composition and method for extruding plastic articles having accent color pattern |
| US5866639A (en) * | 1996-04-03 | 1999-02-02 | M. A. Hannacolor A Division Of M. A. Hanna Company | Compostion and method for extruding plastic articles having accent color pattern |
| WO2001054889A1 (en) * | 2000-01-29 | 2001-08-02 | Clariant Finance (Bvi) Limited | Process for producing shaped articles having a color swirl effect |
| EP1547494A1 (en) * | 2002-07-16 | 2005-06-29 | Misawa Homes Co., Ltd | Woody molding, its production system and production method |
| JP2006181726A (en) * | 2004-12-24 | 2006-07-13 | Olympus Corp | Barrel of writing utensil and writing utensil using this barrel |
| KR100853269B1 (en) * | 2008-01-14 | 2008-08-21 | 윤성진 | Writing instruments using syntheic resin pen-handle having the tecture of wood |
| KR100853268B1 (en) * | 2008-01-14 | 2008-08-21 | 윤성진 | Method for manufacturing synthetic resin pen-handle having the texture of wood |
| US9090769B2 (en) | 2011-04-05 | 2015-07-28 | Ticona Llc | Molded articles having a swirl-like or marble-like appearance and compositions for producing same |
| WO2018036847A1 (en) * | 2016-08-26 | 2018-03-01 | A.W. Faber-Castell Cosmetics Gmbh | Pencil comprising an integrally injection-moulded layered casing |
| CN108819563A (en) * | 2018-08-27 | 2018-11-16 | 宁波正霖文具有限公司 | A kind of novel crayon |
| US10932544B2 (en) | 2016-08-26 | 2021-03-02 | A.W. Faber-Castell Cosmetics Gmbh | Pen having an integrally injection-moulded coating sleeve |
-
1993
- 1993-03-05 JP JP04554093A patent/JP3207960B2/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620642A (en) * | 1993-03-05 | 1997-04-15 | Misawa Homes Co., Ltd. | Simulated wood product manufacturing method and simulated wood product |
| US5866639A (en) * | 1996-04-03 | 1999-02-02 | M. A. Hannacolor A Division Of M. A. Hanna Company | Compostion and method for extruding plastic articles having accent color pattern |
| JPH1060124A (en) * | 1996-08-13 | 1998-03-03 | Toyoda Gosei Co Ltd | Molding of colored resin |
| WO1998052996A1 (en) * | 1997-05-20 | 1998-11-26 | M.A. Hannacolor | Improved composition and method for extruding plastic articles having accent color pattern |
| WO2001054889A1 (en) * | 2000-01-29 | 2001-08-02 | Clariant Finance (Bvi) Limited | Process for producing shaped articles having a color swirl effect |
| EP1547494A1 (en) * | 2002-07-16 | 2005-06-29 | Misawa Homes Co., Ltd | Woody molding, its production system and production method |
| EP1547494A4 (en) * | 2002-07-16 | 2005-08-24 | Misawa Homes Co | Woody molding, its production system and production method |
| US8007881B2 (en) | 2002-07-16 | 2011-08-30 | Misawa Homes Co., Ltd. | Wood-like molded product, manufacturing apparatus for the same, and manufacturing method of the same |
| JP4658588B2 (en) * | 2004-12-24 | 2011-03-23 | オリンパス株式会社 | Writing tool shaft and writing tool using the same |
| JP2006181726A (en) * | 2004-12-24 | 2006-07-13 | Olympus Corp | Barrel of writing utensil and writing utensil using this barrel |
| KR100853269B1 (en) * | 2008-01-14 | 2008-08-21 | 윤성진 | Writing instruments using syntheic resin pen-handle having the tecture of wood |
| KR100853268B1 (en) * | 2008-01-14 | 2008-08-21 | 윤성진 | Method for manufacturing synthetic resin pen-handle having the texture of wood |
| US9090769B2 (en) | 2011-04-05 | 2015-07-28 | Ticona Llc | Molded articles having a swirl-like or marble-like appearance and compositions for producing same |
| US9745469B2 (en) | 2011-04-05 | 2017-08-29 | Ticona Llc | Molded articles having a swirl-like or marble-like appearance and compositions for producing same |
| WO2018036847A1 (en) * | 2016-08-26 | 2018-03-01 | A.W. Faber-Castell Cosmetics Gmbh | Pencil comprising an integrally injection-moulded layered casing |
| US10849404B2 (en) | 2016-08-26 | 2020-12-01 | A.W. Faber-Castell Cosmetics Gmbh | Pencil comprising an integrally injection-moulded layered casing |
| US10932544B2 (en) | 2016-08-26 | 2021-03-02 | A.W. Faber-Castell Cosmetics Gmbh | Pen having an integrally injection-moulded coating sleeve |
| EP4155050A1 (en) * | 2016-08-26 | 2023-03-29 | A.W. Faber-Castell Cosmetics GmbH | Pencil comprising an integrally injection-moulded layered casing |
| CN108819563A (en) * | 2018-08-27 | 2018-11-16 | 宁波正霖文具有限公司 | A kind of novel crayon |
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