JPH08207125A - Woody product and production thereof - Google Patents

Woody product and production thereof

Info

Publication number
JPH08207125A
JPH08207125A JP1887195A JP1887195A JPH08207125A JP H08207125 A JPH08207125 A JP H08207125A JP 1887195 A JP1887195 A JP 1887195A JP 1887195 A JP1887195 A JP 1887195A JP H08207125 A JPH08207125 A JP H08207125A
Authority
JP
Japan
Prior art keywords
wood
particles
parison
resin
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
Application number
JP1887195A
Other languages
Japanese (ja)
Other versions
JP2891645B2 (en
Inventor
Masami Katou
まさみ 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Misawa Homes Co Ltd
Original Assignee
Misawa Homes Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Misawa Homes Co Ltd filed Critical Misawa Homes Co Ltd
Priority to JP1887195A priority Critical patent/JP2891645B2/en
Publication of JPH08207125A publication Critical patent/JPH08207125A/en
Application granted granted Critical
Publication of JP2891645B2 publication Critical patent/JP2891645B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Landscapes

  • Reinforced Plastic Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To produce a woody product not constant in its cross-directional shape in one direction and having patterns near to natural grain by grinding a ground powder of a cellulose material to form powdery particles and fixing specific surface particles to the outer peripheral surfaces of the powdery particles and mixing a resin and pigment with the obtained particles and extruding the resulting mixture in a molten state to form a parison and subjecting the parison to blow molding. CONSTITUTION: A ground powder obtained by grinding a cellulose material is ground to form powdery particles enhanced in bulk specific gravity and surface particles smaller and harder than the powdery particles are fixed to the outer peripheral surfaces of the powdery particles to form fixed particles. Next, pigment and the fixed particles are mixed with a resin to form a woody forming seed material and two kinds of the woody forming seed materials are mixed and melted to be extruded from an extruder 20 to form a parison 10. Next, the parison 10 is confined in a molding machine 40 having mold parts 41, 41 of which the inner surfaces have the outer surface of a molded product and two mold parts 41, 41 are fitted to each other to blow air into the parison from a blow nozzle and cooling water is allowed to flow through respective cooling water channels 46 to cool the parison 10.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、例えば住宅における
家具等の各種部品、さらには車両の内装部材など各種の
製品等のように木質様を有した製品の製造方法及びその
製品に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a product having a woody appearance such as various parts such as furniture in a house, and various products such as an interior member of a vehicle, and a product thereof. .

【0002】[0002]

【従来の技術】本願発明に関連のある技術として、PC
T JP94/00351号(国際公開番号;WO94
/20280号)に記載された「セルロース系微粉粒、
木質様成形品および木質様製品」の技術について簡単に
説明する。原料としてのセルロース材を粉砕して得た粉
砕粉を磨砕処理して嵩比重を高めた粉粒とし、この粉粒
の外周面に、該粉粒よりも小径でかつ硬い表面粒を固定
させて固定粒とし、この固定粒に樹脂及び顔料を混合
し、かつ融解させ、その後または融解と同時に押出成形
または射出成形により所望形状に成形する。すると、天
然の木の木目に極めて近い模様を表面に有し、しかも手
触り感等の風合いも天然の木に近い木質様製品の製造方
法及び木質様製品を提供することができる。
2. Description of the Related Art As a technique related to the present invention, a PC
T JP94 / 00351 (International Publication Number; WO94
/ 20280) "Cellulose-based fine powder particles,
The technology of "wood-like molded product and wood-like product" will be briefly described. The pulverized powder obtained by pulverizing the cellulose material as a raw material is ground to obtain powder particles having an increased bulk specific gravity, and fixed on the outer peripheral surface of the powder particles, surface particles having a smaller diameter and a hardness smaller than the powder particles. Fixed particles are obtained by mixing the resin and the pigment with the fixed particles, melting the fixed particles, and thereafter or simultaneously with melting, forming into a desired shape by extrusion molding or injection molding. Then, it is possible to provide a method for producing a wood-like product and a wood-like product which have a pattern extremely close to the grain of a natural tree on the surface and have a texture such as a touch feeling similar to that of the natural tree.

【0003】ここで、天然木に極めて近い成形品を作製
するために顔料が不規則に流れるように成形するための
手段としては、PCT JP94/00351号の明細
書中に開示されているように、樹脂に固定粒を混合して
形成したベース材と、樹脂に顔料および固定粒を混合し
て形成したシード材とを用いて成形する手段が採用され
てきた。
[0003] Here, as a means for forming a pigment so as to flow irregularly in order to produce a molded product very close to natural wood, as disclosed in the specification of PCT JP94 / 00351. A means for molding using a base material formed by mixing fixed particles with resin and a seed material formed by mixing pigment and fixed particles with resin has been adopted.

【0004】[0004]

【発明が解決しようとする課題】しかし、上記技術の場
合、最終的に製造される成形品は断面形状が一方向に対
して一定である成形品に限られており、断面形状が一方
向に対して一定でない且つ天然の木の木目に極めて近い
模様を表面に有する木質様製品を作り出す手段は、確立
されていなかった。例えば、押し出し方向の中央部分の
断面積が両端部分の断面積に比べて大きいような成形品
は提供されていなかった。
However, in the case of the above technique, the finally manufactured molded article is limited to a molded article whose cross-sectional shape is constant in one direction, and the cross-sectional shape is unidirectional. In contrast, no means has been established for producing woody products that have a texture on their surface that is not constant and closely approximates the grain of natural wood. For example, no molded product has been provided in which the cross-sectional area of the central portion in the extrusion direction is larger than the cross-sectional area of both end portions.

【0005】本発明が解決すべき課題は、断面形状が一
方向に対して一定でない且つ天然の木の色合いまたは木
目に極めて近い模様を表面に有する木質様製品を作り出
す技術を提供することにある。ここで、請求項1ないし
請求項6記載の発明の目的は、断面形状が一方向に対し
て一定でない且つ天然の木の色合いまたは木目に極めて
近い模様を表面に有する木質様製品を、ブロー成形によ
って製造する方法を提供することである。
The problem to be solved by the present invention is to provide a technique for producing a wood-like product having a cross-sectional shape which is not constant in one direction and which has on the surface a shade of natural wood or a pattern very close to the grain of wood. . Here, an object of the invention according to claim 1 to claim 6 is to blow-mold a wood-like product having a cross-sectional shape that is not constant in one direction and a color of natural wood or a pattern very close to the grain on the surface. It is to provide a method of manufacturing by.

【0006】また、請求項7記載の発明の目的は、断面
形状が一方向に対して一定でない且つ天然の木の木目に
極めて近い模様を表面に有するブロー成形による木質様
製品を提供することである。
It is another object of the present invention to provide a blown wood-like product having a cross-sectional shape which is not constant in one direction and which has a pattern very close to the grain of natural wood on its surface. is there.

【0007】[0007]

【課題を解決するための手段】本発明は、上記した目的
を達成するためのものである。請求項1記載の木質様成
形品の製造方法は、セルロース材を粉砕して得た粉砕粉
を磨砕処理して嵩比重を高めた粉粒とし、この粉粒の外
周面に、該粉粒よりも小径でかつ硬い表面粒を固定させ
て固定粒とし、この固定粒に樹脂及び顔料を混合し、か
つ融解させて押し出してパリソンを形成し、そのパリソ
ンにブロー成形を施すことによって成形品を製造するこ
とを特徴とする木質様成形品の製造方法である。
The present invention is to achieve the above-mentioned object. The method for producing a wood-like molded product according to claim 1, wherein a pulverized powder obtained by pulverizing a cellulosic material is ground to obtain powder particles having a high bulk specific gravity, and the powder particles are provided on the outer peripheral surface of the powder particles. A fixed particle with a smaller diameter and harder surface is fixed to form a fixed particle.The fixed particle is mixed with a resin and a pigment, melted and extruded to form a parison, and the parison is blow molded to form a molded product. It is a method for producing a wood-like molded article characterized by producing.

【0008】ここにいう「セルロース材」としては、木
材の他に、バカス、稲藁等を使用することも可能である
が、木材を使用すると、原料供給が容易であると共に、
住宅の建築等の際に出る木材の端材やのこぎり屑を用い
ることができる。また嵩比重を高めるための「摩砕処
理」は、粒形状をなさず、その多くが繊維がひげ状に突
出した状態となっている粉砕粉から、余分なひげ状の繊
維部分をなくすための処理のことをいう。摩砕処理によ
って形成される粉粒は、粉砕粉からひげ状の突出部分が
なくなるので、従来の木粉のごとく水(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
縮が極めて少なくなり、よってこの粉粒を含有してなる
木質様製品は寸法安定性に極めて優れたものとなる。
As the "cellulosic material" mentioned here, it is possible to use bacas, rice straw, etc. in addition to wood. However, the use of wood facilitates the supply of raw materials and
It is possible to use wood scraps and sawdust generated when building a house. The "grinding process" to increase the bulk specific gravity is to remove the extra whisker-like fiber part from the crushed powder that does not form a grain shape and most of the fibers are in the state of protruding whiskers. Refers to processing. The powder particles formed by the grinding process have no whiskers-like protruding parts from the crushed powder, so water (including moisture), like conventional wood powder,
The expansion and contraction caused by adsorbing or releasing the solvent is extremely reduced, and thus the wood-like product containing the powder particles has extremely excellent dimensional stability.

【0009】磨砕処理は、余分なひげ状の繊維部分をな
くすことができるものであればどのような種類の加工機
械を用いることもできる。例えば、粉砕用ボールを用い
たボールミルによって加工すると、ひげ状の繊維部分を
なくすことができ、磨砕処理が行える。また、その磨砕
処理と同時に大きさの均一化が図れ、更にはボールミル
の中に表面粒を添加することによって、次の工程である
「表面粒の固定」をも同時に行うことができる。
The milling process can use any type of processing machine that is capable of eliminating excess whisker-like fiber portions. For example, by processing with a ball mill using crushing balls, the whisker-shaped fiber portion can be eliminated, and the grinding process can be performed. Further, at the same time as the grinding treatment, the size can be made uniform, and by adding the surface grains into the ball mill, the next step "fixing the surface grains" can be performed at the same time.

【0010】上記の「表面粒」は、粉粒よりも小径で、
かつ硬いものであれば使用することができるが、例え
ば、無機質材、金属材またはプラスチック材のうちの1
または複数の材料を用いることが可能である。例えば、
酸化チタン、フェライト、アルミニウム、ニッケル、銀
などの金属材料、またはセラミック等の非金属材料であ
る。表面粒として、白色無機顔料を用いると、固定粒が
白色になるので、成形品を色が白っぽい木材に似せる場
合に使用できるだけでなく、成形品を成形する際に他の
色の顔料を用いることによって、黒っぽいあるいは茶色
っぽい木材に似せた成形品にも使用することができる。
また、この木質様製品にあっては、表面粒として無機顔
料を用いると、耐熱性が向上するので、単に粉砕粉を配
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。
The above-mentioned "surface particles" have a smaller diameter than the powder particles,
If it is hard and hard, it can be used, for example, one of an inorganic material, a metal material, or a plastic material.
Alternatively, a plurality of materials can be used. For example,
A metal material such as titanium oxide, ferrite, aluminum, nickel, or silver, or a non-metal material such as ceramic. When white inorganic pigments are used as the surface particles, the fixed particles become white, so it can be used not only to make molded products resemble whitish wood, but also to use pigments of other colors when molding molded products. It can also be used for moldings that resemble blackish or brownish wood.
In addition, in this wood-like product, when an inorganic pigment is used as the surface particles, the heat resistance is improved, so there is less heat influence during molding, as compared with the case of simply mixing pulverized powder and molding,
Therefore, alterations such as changes in color and shape are suppressed.

【0011】「樹脂」とは、硬質樹脂、軟質樹脂を含
み、例えば塩化ビニル樹脂、発泡塩化ビニル樹脂、ポリ
エチレン樹脂、ポリプロピレン樹脂、フェノール樹脂、
ウレタン樹脂、ポリウレタン樹脂、ABS樹脂、ポリス
チレン樹脂などである。「顔料」とは、有色顔料であ
り、例えば酸化鉄、カドミウムイエロー、カーボンブラ
ックなどの無機顔料または有機顔料である。
The "resin" includes hard resin and soft resin, for example, vinyl chloride resin, expanded vinyl chloride resin, polyethylene resin, polypropylene resin, phenol resin,
Examples thereof include urethane resin, polyurethane resin, ABS resin, polystyrene resin and the like. The "pigment" is a colored pigment, and is, for example, an inorganic pigment such as iron oxide, cadmium yellow, or carbon black, or an organic pigment.

【0012】樹脂に混合する固定粒の全体に対する割合
は、30重量%を越えないようにしている。成形時の流
動性が悪くなり、成形に支障があるからである。請求項
2記載の木質様製品の製造方法は、請求項1記載の木質
様製品の製造方法を技術的に限定したものであり、パリ
ソンは、樹脂、顔料および固定粒の混合比を異ならせた
複数種類の木質様形成シード材を備えた製品材料を融解
して形成したことを特徴とする。
The ratio of the fixed particles mixed with the resin to the whole should not exceed 30% by weight. This is because the fluidity at the time of molding deteriorates, which hinders molding. The method for producing a wood-like product according to claim 2 is a technical limitation of the method for producing a wood-like product according to claim 1, and the parison has different mixing ratios of resin, pigment and fixed particles. It is characterized by being formed by melting a product material provided with a plurality of kinds of wood-like forming seed materials.

【0013】ここにいう「木質様形成シード材」とは、
樹脂のみからなるもの、樹脂および顔料からなるもの、
樹脂および固定粒からなるものを含む。また、「製品材
料」の中には、必ず顔料および固定粒が含まれるように
する。すなわち、「製品材料」の中に樹脂のみからなる
「木質様形成シード材」を含む場合には、他の「木質様
形成シード材」には顔料および固定粒を含むものとす
る。但し、樹脂に混合する固定粒のベース材全体に対す
る割合は、30重量%を越えないようにしている。成形
時の流動性が悪くなり、成形に支障があるからである。
The term "wood-like seed material" used herein means
Those consisting only of resin, those consisting of resin and pigment,
Includes resin and fixed particles. Also, make sure that the "product materials" include pigments and fixed particles. That is, when the “product material” includes a “woody-like seed material” made of only a resin, the other “woody-like seed material” includes a pigment and fixed particles. However, the ratio of the fixed particles mixed with the resin to the whole base material is set not to exceed 30% by weight. This is because the fluidity at the time of molding deteriorates, which hinders molding.

【0014】請求項3記載の木質様製品の製造方法は、
請求項2記載の木質様製品の製造方法を技術的に限定し
たものであり、木質様形成シード材は、樹脂に顔料およ
び固定粒を混合してペレット状に形成した木質様形成ペ
レットとしたことを特徴とする。「樹脂をペレット状に
形成」するための技術としては、粉体、固体等の材料を
融解し、多孔円形ノズルからひも状に押し出して切断す
るといった従来から公知の手段が用いられる。
A method for manufacturing a woody product according to claim 3 is:
The method for producing a wood-like product according to claim 2 is technically limited, and the wood-like forming seed material is a wood-like forming pellet formed by mixing a resin with a pigment and fixed particles to form a pellet. Is characterized by. As a technique for “forming the resin into pellets”, a conventionally known means of melting a material such as powder or solid and extruding it into a string shape from a porous circular nozzle and cutting it is used.

【0015】請求項4に記載された木質様製品の製造方
法は、請求項2または請求項3記載の木質様製品の製造
方法を技術的に限定したものであり、一の木質様形成材
シード材は、その融解時における流動性が、他の木質様
形成シード材の融解時における流動性よりも低くなるよ
うに形成したことを特徴とする。
The method for producing a wood-like product according to claim 4 is a technical limitation of the method for producing a wood-like product according to claim 2 or claim 3, wherein a wood-like forming material seed is used. The wood is characterized in that its flowability when melted is lower than that of other wood-like forming seed materials when melted.

【0016】木質様形成材シード材の流動性に差を設け
る手段としては、樹脂の種類を異ならせる他、各種の添
加剤をいずれか一方または双方に添加するなど、公知の
手段を用いる。請求項5に記載された木質様製品の製造
方法は、請求項4記載の木質様製品の製造方法を技術的
に限定したものであり、一の木質様形成材ペレットは、
その融解温度を他の木質様形成ペレットの融解温度より
も高くなるように形成したことを特徴とする。
As a means for providing a difference in the fluidity of the wood-like forming material seed material, known means such as different kinds of resins and addition of various additives to one or both of them is used. The method for producing a wood-like product according to claim 5 is a technical limitation of the method for producing a wood-like product according to claim 4, wherein one wood-like forming material pellet is
It is characterized in that it is formed so that its melting temperature is higher than the melting temperature of other woody pellets.

【0017】一の木質様形成材ペレットの融解温度を他
の木質様形成ペレットの融解温度よりも高くなるように
形成する手段としては、例えば、木質様形成材ペレット
に混合する固定粒や顔料の割合を、他の木質様形成ペレ
ットに混合する固定粒や顔料の割合よりも多くすること
で達成できる。請求項6に記載された木質様製品の製造
方法は、請求項2記載の木質様製品の製造方法を技術的
に限定したものであり、木質様形成シード材は、樹脂の
粉末に顔料および固定粒を混合した木質様形成コンパウ
ンドとしたことを特徴とする。「木質様形成シード材」
は、樹脂のみの場合、樹脂に顔料のみを混合した場合も
あるので、樹脂コンパウンドのみの場合、顔料のみを含
む樹脂コンパウンドの場合もある。
As a means for forming the melting temperature of one wood-like forming material pellet to be higher than the melting temperature of another wood-like forming material pellet, for example, a fixed particle or a pigment mixed with the wood-like forming material pellet is used. This can be achieved by making the proportion higher than the proportion of fixed particles or pigments mixed with other wood-like forming pellets. The method for producing a wood-like product according to claim 6 is a technical limitation of the method for producing a wood-like product according to claim 2, wherein the wood-like forming seed material is a resin powder containing a pigment and a fixing agent. It is characterized in that it is a wood-like formation compound in which grains are mixed. "Wood-like formation seed material"
In the case of using only the resin, there may be a case where only the pigment is mixed with the resin, and therefore, there may be the case of using only the resin compound or the case of using the resin compound containing only the pigment.

【0018】請求項7記載の木質様成形品は、セルロー
ス材を粉砕して得た粉砕粉を磨砕処理して嵩比重を高め
た粉粒とし、この粉粒の外周面に、該粉粒よりも小径で
かつ硬い表面粒を固定させて固定粒とし、この固定粒に
樹脂及び顔料を混合し、かつ融解させて押し出してパリ
ソンを形成し、そのパリソンにブロー成形を施すことに
よって製造したことを特徴とする木質様成形品である。
In the wood-like molded article according to claim 7, pulverized powder obtained by pulverizing a cellulosic material is ground to obtain powder particles having an increased bulk specific gravity, and the powder particles are provided on the outer peripheral surface of the powder particles. It is manufactured by fixing particles having a smaller diameter and harder surface to form fixed particles, mixing the fixed particles with resin and pigment, and melting and extruding to form a parison, and subjecting the parison to blow molding. It is a wood-like molded product characterized by.

【0019】[0019]

【作 用】請求項1記載の請求項1記載の木質様成形品
の製造方法の作用について説明する。セルロース材を粉
砕して得た粉砕粉を磨砕処理して嵩比重を高めた粉粒と
し、この粉粒の外周面に、該粉粒よりも小径でかつ硬い
表面粒を固定させて固定粒とし、この固定粒に樹脂及び
顔料を混合し、かつ融解させることによって、パリソン
の原料ができあがる。この原料を中空管状に押し出すこ
とによってパリソンを形成するのであるが、このときの
パリソンの表面には固定粒と顔料とが混ざりあって模様
を形成するが、固定粒と顔料とが完全に混ざりあった場
合には木の色合いを呈する。
[Operation] The operation of the method for producing a wood-like molded article according to claim 1 will be described. The pulverized powder obtained by pulverizing the cellulose material is subjected to grinding treatment to obtain powder particles having an increased bulk specific gravity, and fixed to the outer peripheral surface of the powder particles by fixing surface particles having a smaller diameter and harder than the powder particles. Then, by mixing the fixed particles with the resin and the pigment and melting the fixed particles, the raw material for the parison is completed. A parison is formed by extruding this raw material into a hollow tubular shape.At this time, the fixed particles and the pigment are mixed with each other to form a pattern on the surface of the parison, but the fixed particles and the pigment are completely mixed with each other. If it does, it will have a shade of wood.

【0020】上記のようなパリソンにブロー成形を施す
ことによって、中空の成形品を製造することができる。
パリソンは、成形時における延びを妨げない。請求項2
に記載された木質様製品の製造方法は、請求項1に記載
された木質様製品の製造方法と異なり、以下のような作
用をなす。すなわち、複数種類の木質様形成シード材を
備えた製品材料が融解することによって、流れた木目模
様が形成されやすくなる。
By blow molding the parison as described above, a hollow molded article can be manufactured.
The parison does not interfere with the elongation during molding. Claim 2
The method for producing a wood-like product described in (1) is different from the method for producing a wood-like product according to claim 1 and has the following operation. That is, when the product material including the plurality of types of wood-like forming seed materials is melted, the flowed wood grain pattern is easily formed.

【0021】請求項3に記載された木質様製品の製造方
法は、請求項2に記載された木質様製品の製造方法と異
なり、以下のような作用をなす。すなわち、木質様形成
シード材がペレット状をなしているので、製品材料を製
造するまでの間に時間的経過や、空間的な移動が必要な
場合に、木質様形成シード材が粉末状態である木質様形
成コンパウンドの場合(請求項6の場合)に比べて劣化
しにくい。また、請求項6記載の木質様製品の製造方法
の木質様形成コンパウンドが樹脂混合しやすいのに比
べ、ペレット状であると樹脂混合しにくいので、木目模
様がくっきりと現れやすい。
The method for producing a wood-like product described in claim 3 is different from the method for producing a wood-like product described in claim 2, and has the following operation. In other words, since the wood-like forming seed material is in the form of pellets, the wood-like forming seed material is in a powder state when a lapse of time or spatial movement is required until the product material is manufactured. Compared to the case of a wood-like compound (the case of claim 6), it is less likely to deteriorate. Further, in the method for producing a wood-like product according to claim 6, the wood-like forming compound easily mixes with the resin, whereas when it is in a pellet form, it is difficult to mix the resin, so that the wood grain pattern tends to appear clearly.

【0022】請求項4に記載された木質様製品の製造方
法は、請求項2ないし請求項3に記載された木質様製品
の製造方法と異なり、以下のような作用をなす。すなわ
ち、一の木質様形成材シード材の融解時における流動性
が、他の木質様形成材シード材の融解時における流動性
よりも低いので、流動性の低いほうの木質様形成材シー
ド材の流れが悪くなる。そのため、それに含まれている
顔料が成形時において均一に流れにくく且つ混合されに
くいため、最終的な成形品の表面に現れる模様が、天然
の木目模様に近くなる。
The method for manufacturing a wood-like product described in claim 4 is different from the method for manufacturing a wood-like product described in claims 2 to 3 and has the following operation. That is, since the fluidity of one wood-like forming material seed material during melting is lower than the fluidity of another wood-like forming material seed material during melting, the wood-like forming material seed material with lower fluidity The flow becomes poor. Therefore, since the pigment contained therein hardly flows uniformly during mixing and is difficult to mix, the pattern appearing on the surface of the final molded product becomes close to a natural wood grain pattern.

【0023】請求項5に記載された木質様製品の製造方
法は、請求項4に記載された木質様製品の製造方法と異
なり、以下のような作用をなす。すなわち、複数の木質
様形成ペレットのうち、低い融解温度に設定する。その
ため、溶融温度が高いほうの木質様形成材ペレットの融
解温度に達しないため、融解状態が不十分であり、流動
性が悪くなる。そのため、流動性の低いほうの木質様形
成材シード材に含まれている顔料が、成形時において均
一に流れないため、最終的な成形品の表面に現れる模様
が、天然の木目模様に近くなる。
The method for producing a wood-like product described in claim 5 is different from the method for producing a wood-like product described in claim 4, and has the following operation. That is, the melting temperature is set to be low among the plurality of wood-like pellets. Therefore, since the melting temperature of the wood-like forming material pellet having a higher melting temperature is not reached, the melting state is insufficient and the fluidity deteriorates. As a result, the pigment contained in the seed material, which has a lower fluidity and does not flow uniformly during molding, causes the pattern that appears on the surface of the final molded product to approximate the natural wood grain pattern. .

【0024】請求項6に記載された木質様製品の製造方
法は、請求項2記載の木質様製品の製造方法と異なり、
以下のような作用をなす。すなわち、木質様形成シード
材を木質様形成コンパウンドとしているので、融解させ
るまでに必要な熱エネルギーおよび時間が、ペレット状
の場合と比べて少なくて済む。
The method for producing a wood-like product according to claim 6 is different from the method for producing a wood-like product according to claim 2,
It operates as follows. That is, since the wood-like formation seed material is the wood-like formation compound, the heat energy and time required for melting are less than those in the case of pellets.

【0025】請求項7に記載された木質様製品は、以下
のようにして形成される。まず、セルロース材を粉砕し
て、粉砕粉を得る。次に、その粉砕粉を磨砕処理して嵩
比重を高めて粉粒を得る。次に、その粉粒に表面粒を固
定させて固定粒を得る。この固定粒を顔料とともに樹脂
に混合して融解させて押し出してパリソンを形成する。
そしてそのパリソンにブロー成形を施すことによって、
木質様製品を製造する。パリソンは、成形時における延
びを妨げない。
The woody product according to claim 7 is formed as follows. First, the cellulose material is crushed to obtain crushed powder. Next, the crushed powder is ground to increase the bulk specific gravity and obtain powder particles. Next, surface grains are fixed to the powder grains to obtain fixed grains. The fixed particles are mixed with a pigment in a resin, melted and extruded to form a parison.
And by applying blow molding to the parison,
Manufacture wood-like products. The parison does not interfere with the elongation during molding.

【0026】パリソンの表面には固定粒と顔料とが混ざ
りあって模様を形成するが、固定粒と顔料とが完全に混
ざりあった場合には木の色合いを呈し、複数種類の木質
様形成シード材が完全に混ざりあわない場合には木目に
酷似した模様が形成される。
On the surface of the parison, fixed grains and pigments are mixed to form a pattern, but when the fixed grains and pigments are completely mixed, a tree shade is exhibited, and a plurality of types of wood-like formation seeds are obtained. When the materials do not mix completely, a pattern that closely resembles wood grain is formed.

【0027】[0027]

【実施例】以下、本発明を実施例及び図面に基づいて、
更に詳しく説明する。ここで使用する図面は、図1乃至
図5である。図1は、パリソンを押し出している様子を
示す側面図である。図2は、パリソンを成形型に入れる
様子を示す側面図(パリソン部分は断面図)である。図
3は、パリソンにブロー成形を施した状態を示す側面図
(パリソン部分は断面図)である。図4は、ブロー成形
を終えて成形型を外した状態を示す側面図である。図5
は、第二のパリソンを成形型に入れるとともに成形を終
えた成形品をピンチオフする様子を示す側面図である。
Embodiments of the present invention will now be described with reference to the embodiments and the drawings.
This will be described in more detail. The drawings used here are FIGS. 1 to 5. FIG. 1 is a side view showing a state in which a parison is pushed out. FIG. 2 is a side view (a parison portion is a cross-sectional view) showing a state in which the parison is put into a molding die. FIG. 3 is a side view (a parison portion is a cross-sectional view) showing a state in which the parison is blow-molded. FIG. 4 is a side view showing a state in which the molding die is removed after the blow molding is completed. Figure 5
FIG. 6 is a side view showing a state in which the second parison is put into a molding die and the molded product that has been molded is pinched off.

【0028】本実施例の木質様成形品の製造方法は、ま
ず、セルロース材を粉砕して得た粉砕粉を磨砕処理して
嵩比重を高めた粉粒とし、この粉粒の外周面に、該粉粒
よりも小径でかつ硬い表面粒を固定させて固定粒を形成
する。なお、固定粒の製造は、PCT JP94/00
351号(国際公開番号;WO94/20280号)に
開示されている方法を用いることができる。したがっ
て、本実施例においては、詳しい説明を省略する。
In the method for producing a wood-like molded product of this embodiment, first, a pulverized powder obtained by pulverizing a cellulose material is ground to obtain powder particles having an increased bulk specific gravity. The fixed particles are formed by fixing the surface particles having a smaller diameter and harder than the powder particles. The production of fixed granules is done by PCT JP94 / 00.
The method disclosed in No. 351 (International Publication Number; WO94 / 20280) can be used. Therefore, detailed description is omitted in this embodiment.

【0029】次に、この固定粒を用いて木質様形成シー
ド材を形成する。すなわち、樹脂に顔料および固定粒を
混合した木質様形成シード材を形成する。この木質様形
成シード材は、樹脂の粉末、顔料の粉末および固定粒を
混合しただけの木質様形成コンパウンドでもよいが、そ
れら混合物を融解し、多孔円形ノズルからひも状に押し
出して切断し、木質様形成ペレットを作製して使用して
もよい。そうしておくと、輸送、保管などの際に木質様
形成コンパウンドよりも吸湿しにくく、同一品質を保ち
やすくて便利である。一方、木質様形成コンパウンドと
した場合には、木質様形成ペレットよりも融解に要する
時間及びエネルギーが小さくて済む。
Next, a seed material for forming a wood-like material is formed using the fixed grains. That is, a wood-like formation seed material in which a pigment and fixed particles are mixed with a resin is formed. This wood-like forming seed material may be a wood-like forming compound obtained by simply mixing resin powder, pigment powder and fixed particles, but the mixture is melted and extruded into a string shape from a perforated circular nozzle to be cut into wood. The shaped pellets may be prepared and used. This makes it easier to absorb moisture than wood-like molding compounds during transportation and storage, and it is easy and convenient to maintain the same quality. On the other hand, when the wood-like forming compound is used, the time and energy required for melting are smaller than those of the wood-like forming pellet.

【0030】ここで用いる樹脂としては、例えば塩化ビ
ニル樹脂、発泡塩化ビニル樹脂、ポリエチレン樹脂、ポ
リプロピレン樹脂、フェノール樹脂、ウレタン樹脂、ポ
リウレタン樹脂、ABS樹脂、ポリスチレン樹脂などが
採用可能であったが、塩化ビニル樹脂、ポリエチレン樹
脂、ポリプロピレン樹脂、ポリスチレン樹脂がブロー成
形を行いやすく好適であった。
As the resin used here, for example, vinyl chloride resin, foamed vinyl chloride resin, polyethylene resin, polypropylene resin, phenol resin, urethane resin, polyurethane resin, ABS resin, polystyrene resin and the like could be adopted. Vinyl resins, polyethylene resins, polypropylene resins, and polystyrene resins were preferable because they were easy to blow mold.

【0031】木質様形成シード材に用いる顔料は、例え
ば有機顔料または酸化鉄、カドミウムイエロー、カーボ
ンブラックなどの無機顔料のうち、最終的な成形品が所
望する色合いに合わせて、1種類または数種類を選択し
て用いる。本実施例に用いる木質様形成シード材は、固
定粒を約20重量%と、顔料を1ないし30重量%と
を、樹脂に混合したものである。ここで、固定粒の配合
比の実用的範囲は、木質様形成シード材全体に対して1
0ないし50重量%程度である。固定粒を10重量%以
下とすると最終の成形品から木質感がなくなり、50重
量%以上とすると成形時の流動性が悪くなるからであ
る。また、顔料の配合比の実用的範囲は、木質様形成シ
ード材全体に対して0.1ないし30重量%程度であ
る。
The pigment used for the wood-like formation seed material may be one kind or several kinds of organic pigments or inorganic pigments such as iron oxide, cadmium yellow, carbon black, etc., according to the desired shade of the final molded product. Select and use. The wood-like forming seed material used in this example is a mixture of about 20% by weight of fixed particles and 1 to 30% by weight of a pigment in a resin. Here, the practical range of the mixing ratio of the fixed grains is 1 with respect to the whole wood-like forming seed material.
It is about 0 to 50% by weight. This is because when the content of fixed particles is 10% by weight or less, the final molded product has no wood texture, and when it is 50% by weight or more, the fluidity at the time of molding becomes poor. Further, the practical range of the blending ratio of the pigment is about 0.1 to 30% by weight based on the whole wood-like forming seed material.

【0032】なお、固定粒の混合割合や顔料の種類を異
ならせた複数種類の木質様形成シード材を予め用意して
おき、その木質様形成シード材を最終的な成形品が所望
する色合いに合わせて、1種類または数種類を選択して
用いることとしてもよい。また、樹脂のみから形成した
樹脂ペレットと木質様形成シード材とを混合してもよ
い。
It is to be noted that a plurality of types of wood-like forming seed materials having different fixed particle mixing ratios and pigment types are prepared in advance, and the wood-like forming seed material is made to have a shade desired by the final molded product. In addition, one kind or several kinds may be selected and used. Further, resin pellets formed only of resin and a wood-like forming seed material may be mixed.

【0033】本実施例では、予め用意された2種類(場
合によっては3種類以上)の木質様形成シード材を混合
して融解することとした。その各木質様形成シード材
は、それぞれの融解温度を異ならせ、溶融時における流
動性に変化をもたせる。具体的には、一方の木質様形成
ペレットの融解温度を180℃とし、他方の木質様形成
シード材の融解温度を185℃とする。
In this embodiment, two types (three or more types in some cases) of wood-like forming seed materials prepared in advance are mixed and melted. Each of the wood-like forming seed materials has a different melting temperature and a change in fluidity during melting. Specifically, the melting temperature of one wood-like forming pellet is 180 ° C. and the melting temperature of the other wood-like forming seed material is 185 ° C.

【0034】製品材料を溶融するにあたっては、融解温
度の低いほうのペレット、すなわちここでは180℃に
合わせてパリソン成形温度を設定するとともに、成形時
間も融解温度の低いペレットに合わせて設定する。する
と一方のペレットは正常に溶融し、成形方向に均一に流
れ、他方の木質様形成材ペレットはその融解状態が十分
でなく、したがって流れも悪く不均一になる。流れが悪
く不均一になることから、そのペレット中の顔料も当然
均一に流れず、押し出される成形材料10は、その内部
および表層部にて顔料による着色部が不均一に散在する
ので、成形材料10の表層部においては、着色部に不均
一な濃淡が生じ、天然の木目模様に近いものとなる。
In melting the product material, the parison molding temperature is set according to the lower melting temperature of the pellets, that is, 180 ° C. here, and the molding time is also set according to the lower melting temperature of the pellets. Then, one of the pellets melts normally and flows uniformly in the molding direction, and the other wood-like forming material pellets do not have a sufficiently melted state, and therefore the flow is poor and becomes nonuniform. Since the flow is poor and non-uniform, the pigment in the pellet naturally does not flow uniformly, and the extruded molding material 10 has non-uniformly dispersed pigmented portions inside and on the surface layer. In the surface layer portion of 10, uneven coloring occurs in the colored portion, and it becomes close to a natural wood grain pattern.

【0035】融解させた製品材料は、図1に示すように
押し出し機20から押し出してパリソン10を形成す
る。この押し出し機20には、パリソン10に空気を吹
き込むための吹き込み機30および吹き込みノズル31
を備えている。なお、形成されたパリソン10は、前述
したようにその表層部において天然の木目模様に近い模
様をなしている。
The melted product material is extruded from extruder 20 to form parison 10 as shown in FIG. The extruder 20 includes a blower 30 and a blow nozzle 31 for blowing air into the parison 10.
It has. The parison 10 thus formed has a pattern close to a natural wood grain pattern in its surface layer portion as described above.

【0036】次に、図2に示すように、内表面を成形品
の外表面とするような型部41,41の成形機40の内
部に挟み込んでパリソン10を閉じこめる。この成形機
40はボトル形状の成形品をつくるためのものであっ
て、その型部41,41の底部先端における向かい合う
部分に、できあがった成形品11を切り離すためのカッ
ター45,45と、型部41,41を冷やすための冷却
水を通す冷却水路46,46,46,46とを備えてい
る。
Next, as shown in FIG. 2, the parison 10 is enclosed by sandwiching it inside the molding machine 40 of the mold parts 41, 41 whose inner surface is the outer surface of the molded product. This molding machine 40 is for making a bottle-shaped molded product, and cutters 45, 45 for separating the finished molded product 11 and mold parts are provided at opposite parts at the bottom ends of the mold parts 41, 41. Cooling water passages 46, 46, 46, 46 for passing cooling water for cooling 41, 41 are provided.

【0037】次に、図3に示すように、二つの型部4
1,41が合わさり、吹き込みノズル31から空気が吹
き出され、パリソン10は膨らんで型部41,41の内
面に押し付けられる。その状態で各冷却水路46に冷却
水が流されてパリソン10が冷却され、天然の木目模様
に近い模様をなしたボトル形状が固まる。次に、図4に
示すように、二つの型部41,41が離れ、押し出し機
20からは、すでにボトル形状をなした第一成形品11
を下端にぶら下げた新たなパリソン10が押し出され
る。
Next, as shown in FIG. 3, the two mold parts 4
1, 41 are combined, air is blown out from the blowing nozzle 31, and the parison 10 swells and is pressed against the inner surfaces of the mold portions 41, 41. In this state, the cooling water is caused to flow through the cooling water passages 46 to cool the parison 10 and the bottle shape having a pattern close to the natural grain pattern is solidified. Next, as shown in FIG. 4, the two mold parts 41, 41 are separated from each other, and the first molded product 11 that has already been in the shape of a bottle is removed from the extruder 20.
A new parison 10 is hung at the lower end and is pushed out.

【0038】次に、図5に示すように、再び二つの型部
41,41が合わさる。すると、成形機40の底部先端
に設けられたカッター45,45が合わさることによっ
て、新たなパリソン10から第一成形品11が切り離さ
れて落下する。一方、新たなパリソン10に対しては、
吹き込み機30の吹き込みノズル31から空気が吹き出
され、パリソン10は膨らんで型部41,41の内面に
押し付けられ、第二成形品12が成形される。
Next, as shown in FIG. 5, the two mold parts 41, 41 are fitted again. Then, the cutters 45, 45 provided at the bottom end of the molding machine 40 are combined to separate the first molded product 11 from the new parison 10 and drop it. On the other hand, for the new parison 10,
Air is blown from the blowing nozzle 31 of the blowing machine 30, the parison 10 swells and is pressed against the inner surfaces of the mold portions 41, 41, and the second molded product 12 is molded.

【0039】次に、上記した実施例の効果について説明
する。上記実施例によれば、天然の木の色合いまたは木
目に極めて近い模様を表面に有する木質様製品を、ブロ
ー成形によって製造する方法を提供することができたと
いう効果がある。次に、上記した実施例のバリエーショ
ンについて説明する。
Next, the effect of the above embodiment will be described. According to the above-mentioned embodiment, there is an effect that it is possible to provide a method for producing a wood-like product having a color of natural wood or a pattern extremely close to the grain of wood on the surface by blow molding. Next, variations of the above-described embodiment will be described.

【0040】上記実施例は、ブロー成形の一例を示した
にすぎず、本発明は、上記によるブロー成形以外のブロ
ー成形手段であっても採用できる。たとえば、成形材料
に用いる樹脂の種類によっては、冷却をしては生産効率
が悪い場合もあるので、その場合には冷却設備を用いな
いブロー成形手段を採用する。
The above embodiments are merely examples of blow molding, and the present invention can be applied to blow molding means other than the blow molding described above. For example, depending on the type of resin used for the molding material, the cooling may result in poor production efficiency. In that case, therefore, a blow molding means that does not use cooling equipment is adopted.

【0041】[0041]

【発明の効果】請求項1ないし請求項7記載の発明によ
れば、断面形状が一方向に対して一定でない且つ天然の
木の色合いまたは木目に極めて近い模様を表面に有する
木質様製品を、ブロー成形によって製造する方法を提供
することができた。また、請求項8記載の発明によれ
ば、断面形状が一方向に対して一定でない且つ天然の木
の木目に極めて近い模様を表面に有するブロー成形によ
る木質様製品を提供することができた。
According to the inventions of claims 1 to 7, there is provided a woody product having a cross-sectional shape which is not constant in one direction and which has on the surface a shade of natural wood or a pattern very close to wood grain. It was possible to provide a method of manufacturing by blow molding. Further, according to the invention of claim 8, it is possible to provide a wood-like product by blow molding which has a pattern whose cross-sectional shape is not constant in one direction and which has a pattern very close to that of natural wood grain.

【図面の簡単な説明】[Brief description of drawings]

【図1】パリソンを押し出している様子を示す側面図で
ある。
FIG. 1 is a side view showing a state in which a parison is pushed out.

【図2】パリソンを成形型に入れる様子を示す側面図
(パリソン部分は断面図)である。
FIG. 2 is a side view (a parison portion is a cross-sectional view) showing a state in which a parison is put into a molding die.

【図3】パリソンにブロー成形を施した状態を示す側面
図(パリソン部分は断面図)である。
FIG. 3 is a side view (a parison portion is a cross-sectional view) showing a state in which a parison is blow-molded.

【図4】ブロー成形を終えて成形型を外した状態を示す
側面図である。
FIG. 4 is a side view showing a state in which the molding die has been removed after blow molding.

【図5】第二のパリソンを成形型に入れるとともに成形
を終えた成形品をピンチオフする様子を示す側面図であ
る。
FIG. 5 is a side view showing a state in which a second parison is put into a molding die and a molded product that has been molded is pinched off.

【符号の説明】[Explanation of symbols]

10 成形材料 11 第一成
形品 12 第二成形品 20 押し出し機 30 吹き込み機 31 吹き込
みノズル 40 成形機 41 型部 45 カッター 46 冷却水
10 Molding Material 11 First Molded Product 12 Second Molded Product 20 Extruder 30 Blowing Machine 31 Blowing Nozzle 40 Molding Machine 41 Mold 45 Cutter 46 Cooling Channel

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 B29K 503:00 511:14 B29L 22:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B29K 503: 00 511: 14 B29L 22:00

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】セルロース材を粉砕して得た粉砕粉を磨砕
処理して嵩比重を高めた粉粒とし、この粉粒の外周面
に、該粉粒よりも小径でかつ硬い表面粒を固定させて固
定粒とし、この固定粒に樹脂及び顔料を混合し、かつ融
解させて押し出してパリソンを形成し、そのパリソンに
ブロー成形を施すことによって成形品を製造することを
特徴とする木質様成形品の製造方法。
1. A pulverized powder obtained by pulverizing a cellulosic material is ground to obtain powder particles having an increased bulk specific gravity, and surface particles having a diameter smaller than the powder particles and hard surface particles are provided on the outer peripheral surface of the powder particles. It is fixed to form fixed particles, and the fixed particles are mixed with resin and pigment, melted and extruded to form a parison, and the parison is blow-molded to produce a molded product. Molded article manufacturing method.
【請求項2】パリソンは、樹脂、顔料および固定粒の混
合比を異ならせた複数種類の木質様形成シード材を備え
た製品材料を融解して形成したことを特徴とする請求項
1記載の木質様製品の製造方法。
2. The parison is formed by melting a product material provided with a plurality of kinds of wood-like forming seed materials having different mixing ratios of resin, pigment and fixed particles. Method of manufacturing wood-like products.
【請求項3】木質様形成シード材は、樹脂に顔料および
固定粒を混合してペレット状に形成した木質様形成ペレ
ットとしたことを特徴とする請求項2記載の木質様製品
の製造方法。
3. The method for producing a wood-like product according to claim 2, wherein the wood-like formation seed material is a wood-like formation pellet formed by mixing a resin with a pigment and fixed particles to form a pellet.
【請求項4】一の木質様形成材シード材は、その融解時
における流動性が、他の木質様形成シード材の融解時に
おける流動性よりも低くなるように形成したことを特徴
とする請求項2または請求項3記載の木質様製品の製造
方法。
4. The one wood-like forming material seed material is formed so that its fluidity upon melting is lower than that of another wood-like forming seed material upon melting. Item 2. A method for producing a woody product according to claim 2 or 3.
【請求項5】一の木質様形成材ペレットは、その融解温
度を他の木質様形成ペレットの融解温度よりも高くなる
ように形成したことを特徴とする請求項4記載の木質様
製品の製造方法。
5. The production of a wood-like product according to claim 4, wherein one wood-like forming material pellet is formed so that its melting temperature is higher than the melting temperature of another wood-like forming pellet. Method.
【請求項6】木質様形成シード材は、樹脂の粉末に顔料
および固定粒を混合した木質様形成コンパウンドとした
ことを特徴とする請求項2記載の木質様製品の製造方
法。
6. The method for producing a wood-like product according to claim 2, wherein the wood-like formation seed material is a wood-like formation compound in which a pigment and fixed particles are mixed with resin powder.
【請求項7】セルロース材を粉砕して得た粉砕粉を磨砕
処理して嵩比重を高めた粉粒とし、この粉粒の外周面
に、該粉粒よりも小径でかつ硬い表面粒を固定させて固
定粒とし、この固定粒に樹脂及び顔料を混合し、かつ融
解させて押し出してパリソンを形成し、そのパリソンに
ブロー成形を施すことによって製造したことを特徴とす
る木質様成形品。
7. A pulverized powder obtained by pulverizing a cellulosic material is ground to obtain powder particles having an increased bulk specific gravity, and surface particles having a diameter smaller than the powder particles and hard surface particles are provided on the outer peripheral surface of the powder particles. A wood-like molded article produced by fixing to form fixed particles, mixing the resin and pigment into the fixed particles, melting and extruding to form a parison, and subjecting the parison to blow molding.
JP1887195A 1995-02-07 1995-02-07 Wood-like product manufacturing method and wood-like product Expired - Fee Related JP2891645B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1887195A JP2891645B2 (en) 1995-02-07 1995-02-07 Wood-like product manufacturing method and wood-like product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1887195A JP2891645B2 (en) 1995-02-07 1995-02-07 Wood-like product manufacturing method and wood-like product

Publications (2)

Publication Number Publication Date
JPH08207125A true JPH08207125A (en) 1996-08-13
JP2891645B2 JP2891645B2 (en) 1999-05-17

Family

ID=11983613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1887195A Expired - Fee Related JP2891645B2 (en) 1995-02-07 1995-02-07 Wood-like product manufacturing method and wood-like product

Country Status (1)

Country Link
JP (1) JP2891645B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015054871A (en) * 2013-09-10 2015-03-23 株式会社八木熊 Resin composition for blow molding, blow molded body and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015054871A (en) * 2013-09-10 2015-03-23 株式会社八木熊 Resin composition for blow molding, blow molded body and manufacturing method thereof

Also Published As

Publication number Publication date
JP2891645B2 (en) 1999-05-17

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