JP6544773B2 - Method for producing plant fiber reinforced resin - Google Patents

Method for producing plant fiber reinforced resin Download PDF

Info

Publication number
JP6544773B2
JP6544773B2 JP2016064006A JP2016064006A JP6544773B2 JP 6544773 B2 JP6544773 B2 JP 6544773B2 JP 2016064006 A JP2016064006 A JP 2016064006A JP 2016064006 A JP2016064006 A JP 2016064006A JP 6544773 B2 JP6544773 B2 JP 6544773B2
Authority
JP
Japan
Prior art keywords
resin
additive
fiber reinforced
reinforced resin
kneader
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.)
Active
Application number
JP2016064006A
Other languages
Japanese (ja)
Other versions
JP2017177372A (en
Inventor
晶文 伊藤
晶文 伊藤
淳平 石原
淳平 石原
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.)
NIPPON PIGMENT COMPANY LIMITED
Toyota Auto Body Co Ltd
Original Assignee
NIPPON PIGMENT COMPANY LIMITED
Toyota Auto Body 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 NIPPON PIGMENT COMPANY LIMITED, Toyota Auto Body Co Ltd filed Critical NIPPON PIGMENT COMPANY LIMITED
Priority to JP2016064006A priority Critical patent/JP6544773B2/en
Priority to PCT/JP2016/083647 priority patent/WO2017168819A1/en
Publication of JP2017177372A publication Critical patent/JP2017177372A/en
Application granted granted Critical
Publication of JP6544773B2 publication Critical patent/JP6544773B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/90—Fillers or reinforcements, e.g. fibres
    • B29B7/92—Wood chips or wood fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Description

本発明は、樹脂と、前記樹脂に対して混練が可能な最大量の木粉と、前記樹脂と木粉との量に応じた添加剤とを混練機に供給し、混練により植物繊維強化樹脂を製造する植物繊維強化樹脂の製造方法に関する。   The present invention supplies a resin, the maximum amount of wood flour capable of being kneaded with the resin, and an additive according to the amount of the resin and the wood flour to a kneader, and kneads the vegetable fiber reinforced resin by kneading. The present invention relates to a method for producing a vegetable fiber reinforced resin for producing

例えば、自動車用の樹脂部品を製造する場合、前記樹脂部品の強度や耐熱性を向上させるため、樹脂に植物繊維、例えば、木粉を加えることが行なわれている。さらに、例えば、エンジンルーム内で使用される樹脂部品等では、燃焼防止や熱による樹脂の劣化防止の観点から樹脂に種々の添加剤が添加されている。樹脂に対して木粉及び添加剤を加える場合には、一般的に、押出混練機が使用される。即ち、押出混練機において樹脂を溶融させた状態で木粉及び添加剤を加え、スクリュー等により混練することが行なわれる。ここで、押出混練機では、規定量の樹脂に対して混練が可能な最大量の木粉を供給し、さらに必要量の添加剤を供給して混練を行なう。   For example, when manufacturing resin parts for automobiles, in order to improve the strength and heat resistance of the resin parts, it is practiced to add plant fibers such as wood powder to the resin. Furthermore, for example, in resin parts and the like used in the engine room, various additives are added to the resin from the viewpoint of preventing combustion and deterioration of the resin due to heat. When wood flour and additives are added to the resin, an extrusion kneader is generally used. That is, wood flour and additives are added in a state in which the resin is melted in an extrusion kneader, and kneading is performed using a screw or the like. Here, in the extrusion kneader, the maximum amount of wood powder that can be kneaded is supplied to a prescribed amount of resin, and the necessary amount of additive is further supplied to perform kneading.

混練により得られた高濃度の植物繊維強化樹脂はペレットの形状に成形され、後工程で樹脂のペレットと所定比率で混合される。即ち、植物繊維強化樹脂のペレットは樹脂のペレットによって希釈される。そして、樹脂のペレットによって希釈された植物繊維強化樹脂のペレットが射出成形機に供給されて樹脂部品が成形される。このように、押出混練機で高濃度の植物繊維強化樹脂を製造し、後工程で高濃度の植物繊維強化樹脂を樹脂により希釈する方法のため、押出混練機の能力を最大限に利用することができ、低コスト化を図ることができる。   The high concentration plant fiber reinforced resin obtained by kneading is formed into a pellet shape, and is mixed with the resin pellet at a predetermined ratio in a later step. That is, the pellet of vegetable fiber reinforced resin is diluted by the pellet of resin. And the pellet of the vegetable fiber reinforced resin diluted by the pellet of resin is supplied to an injection molding machine, and a resin component is shape | molded. As described above, the method of manufacturing a high concentration plant fiber reinforced resin with an extrusion kneader, and diluting the high concentration plant fiber reinforced resin with the resin in a later step, maximizes the ability of the extrusion kneader And cost can be reduced.

前記押出混練機において、規定量の樹脂に対して混練が可能な最大量の木粉を供給し、さらに必要量の添加剤を供給して混練を行なう際、溶融している樹脂に対して固形分の重量比率が40％を超えると、混練時に摩擦熱の発生が大きくなり、樹脂温度が混練機の設定温度である200℃を超えて上昇する。樹脂温度が例えば220℃を超えると、木粉が熱による劣化を開始し、樹脂部品の性能低下の原因となる。また、熱によりガスが発生し、植物繊維強化樹脂のペレットが発泡して形状が不均一になり、後工程において樹脂のペレットとの混合が良好に行なえなくなる。この問題を解決するため、特許文献１に記載の連続混練機では、スクリューの形状を変えて、材料の送り力を弱め、材料の滞留時間を長くすることで、温度上昇を抑えるようにしている。   In the above-mentioned extrusion kneader, when the maximum amount of wood powder which can be kneaded is supplied to a prescribed amount of resin, and the necessary amount of additive is further supplied to conduct kneading, the resin is solidified with respect to the molten resin When the weight ratio of the portion exceeds 40%, the generation of frictional heat becomes large during kneading, and the resin temperature rises above 200 ° C. which is the set temperature of the kneader. When the resin temperature exceeds, for example, 220 ° C., wood powder starts to deteriorate due to heat, which causes the performance degradation of resin parts. In addition, the gas generates gas due to heat, and the pellets of the plant fiber reinforced resin foam so that the shape becomes nonuniform, and it becomes impossible to mix well with the pellet of the resin in the post process. In order to solve this problem, in the continuous kneader described in Patent Document 1, the temperature rise is suppressed by changing the shape of the screw to weaken the feed force of the material and prolonging the residence time of the material. .

特開平６−２７０１４０号公報Japanese Patent Application Laid-Open No. 6-270140

しかし、押出混練機において、材料の送り力を弱め、材料の滞留時間を長くして温度上昇を抑える方法では、押出混練機が特殊で汎用性に欠ける。   However, in the extrusion kneader, in the method of weakening the feed force of the material and prolonging the residence time of the material to suppress the temperature rise, the extrusion kneader is special and lacks versatility.

本発明は、上記問題点を解決するためになされたものであり、本発明が解決しようとする課題は、汎用の混練機を使用しても、木粉が劣化しない温度以下で混練を行なえるようにして、高品質の高濃度植物繊維強化樹脂を製造することである。   The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is that, even if a general-purpose kneader is used, kneading can be performed at a temperature or less at which wood flour does not deteriorate. Thus, to produce high quality vegetable fiber reinforced resin of high quality.

上記した課題は、各請求項の発明によって解決される。請求項１の発明は、規定量のポリプロピレン樹脂と、前記ポリプロピレン樹脂に対して混練が可能な最大量の木粉と、前記ポリプロピレン樹脂と木粉との量に応じて決められた量の添加剤とを混練機に供給し、前記ポリプロピレン樹脂を溶融させた状態で混練を行なうことにより植物繊維強化樹脂を製造する植物繊維強化樹脂の製造方法であって、前記ポリプロピレン樹脂は、前記木粉が劣化を開始する温度よりも低い温度で溶融可能な構成であり、前記添加剤は、前記ポリプロピレン樹脂が溶融する温度よりも低い温度で溶融する第１の添加剤と、前記ポリプロピレン樹脂が溶融する温度で固化している第２の添加剤とを備えており、前記第１の添加剤は、難燃材と酸化防止剤と相溶化剤とからなり、前記第２の添加剤は、難燃助剤と銅害防止材とからなり、全体に対する前記ポリプロピレン樹脂と前記第１の添加剤との重量比率が60％以上に設定されており、前記第１の添加剤の重量比率が前記第２の添加剤の重量比率よりも大きく設定されている。 The problems described above are solved by the inventions of the respective claims. The invention of claim 1 includes a specified amount of the polypropylene resin, the maximum amount and wood flour which can be kneaded against the polypropylene resin, the polypropylene resin and the amount of additive that is determined depending on the amount of the wood flour And a method for producing a vegetable fiber reinforced resin by producing a vegetable fiber reinforced resin by performing kneading in a state where the polypropylene resin is melted, wherein the polypropylene resin is degraded by the wood powder. a meltable structure at a temperature lower than the temperature at which to start, the additive, the first additive, wherein the polypropylene resin melts at a temperature lower than the temperature which melts at a temperature wherein the polypropylene resin is melted And a second additive that is solidified, wherein the first additive comprises a flame retardant, an antioxidant, and a compatibilizer, and the second additive is a flame retardant aid. And copper damage Consists of a sealing material, the weight of the weight ratio of polypropylene resin and said first additive is set to 60% or more, the first additive weight ratio is the second additive to the entire It is set larger than the ratio .

本発明によると、全体に対するポリプロピレン樹脂と第１の添加剤との重量比率が60％以上に設定されている。ここで、第１の添加剤は、ポリプロピレン樹脂が溶融する温度よりも低い温度で溶融する。このため、第１の添加剤は、混練機による混練の際に、ポリプロピレン樹脂と共に溶融するようになる。このため、混練時に、溶融する材料（ポリプロピレン樹脂、第１の添加剤）の重量比率が60％以上となり、溶融しない固形成分である木粉と第２の添加剤との重量比率が40％以下となる。このように、混練の際、固形成分の重量比率が40％以下となるため、混練による摩擦熱が発生し難く、材料の温度上昇を抑えることができる。この結果、前記木粉の劣化が抑制され、高品質の高濃度植物繊維強化樹脂を製造できる。また、第１の添加剤の重量比率が第２の添加剤の重量比率よりも大きいため、ポリプロピレン樹脂と共に溶融する添加剤の重量比率が大きくなる。 According to the present invention, the weight ratio of the polypropylene resin and the first additive to the whole is set to 60% or more. Here, the first additive melts at a temperature lower than the temperature at which the polypropylene resin melts. For this reason, the first additive comes to melt together with the polypropylene resin at the time of kneading by the kneader. For this reason, the weight ratio of the material ( polypropylene resin , the first additive) to be melted becomes 60% or more at the time of kneading, and the weight ratio of the second additive and the wood powder which is a solid component not melted is 40% or less It becomes. As described above, since the weight ratio of the solid component is 40% or less at the time of kneading, it is difficult to generate frictional heat due to the kneading, and the temperature rise of the material can be suppressed. As a result, the deterioration of the wood flour is suppressed, and high-quality plant fiber reinforced resin of high quality can be produced. In addition, since the weight ratio of the first additive is larger than the weight ratio of the second additive, the weight ratio of the additive melted together with the polypropylene resin is increased.

請求項２に係る発明によると、全体に対する第１の添加剤の重量比率が20％を超えている。即ち、第１の添加剤の重量比率が20％よりも多くなることで、ポリプロピレン樹脂と木粉との重量比率を変えずに、溶融する材料（ポリプロピレン樹脂、第１の添加剤）の重量比率を60％以上とすることができる。 According to the invention of claim 2 , the weight ratio of the first additive to the whole exceeds 20%. That is, when the weight ratio of the first additive is more than 20%, the weight ratio of the material ( polypropylene resin , first additive) to be melted without changing the weight ratio of the polypropylene resin and the wood powder. Can be 60% or more.

請求項３に係る発明によると、第１の添加剤の比重は、ポリプロピレン樹脂の比重よりも大きく設定されており、前記第１の添加剤は、前記ポリプロピレン樹脂が混練機に供給された後で、前記混練機に供給される。このように、最初にポリプロピレン樹脂が混練機に供給されるため、ポリプロピレン樹脂が下に溜った状態で溶融するようになる。次に、混練機に供給された第１の添加剤は溶融したポリプロピレン樹脂に沈んだ状態で溶融するようになる。このため、ポリプロピレン樹脂のペレットが第１の添加剤に浮いた状態で溶けずに残るような不具合を防止できる。 According to the invention of claim 3 , the specific gravity of the first additive is set to be larger than the specific gravity of the polypropylene resin , and the first additive is added after the polypropylene resin is supplied to the kneader , And supplied to the kneader. As described above, since the polypropylene resin is first supplied to the kneader, the polypropylene resin melts in a state of being accumulated below. Next, the first additive supplied to the kneader melts in a molten polypropylene resin . For this reason, it is possible to prevent such a problem that pellets of polypropylene resin remain in the state of floating in the first additive without melting.

請求項４の発明によると、混練機は、一端側に入口部、他端側に出口部が設けられたシリンダ部と、前記シリンダ部の内側で軸心回りに回転可能に構成された混練用のスクリューとを備え、前記シリンダ部の出口部から混練後の製品が押出される構成であり、前記ポリプロピレン樹脂は前記シリンダ部の入口部から前記混練機に供給され、前記第１の添加剤は、前記シリンダ部の途中位置から前記混練機に供給される。このため、ポリプロピレン樹脂が確実に溶融した状態で第１の添加剤を混練機に供給できるようになる。 According to the invention of claim 4 , the kneading machine has a cylinder portion provided with an inlet portion at one end side and an outlet portion at the other end, and a kneading machine configured to be rotatable around an axial center inside the cylinder portion. And the extruded product is extruded from the outlet of the cylinder, the polypropylene resin is supplied to the kneader from the inlet of the cylinder, and the first additive is added. And a middle position of the cylinder part is supplied to the kneader. For this reason, the first additive can be supplied to the kneader in a state in which the polypropylene resin is reliably melted.

請求項５の発明によると、木粉は、シリンダ部の途中位置から混練機に供給される。このため、混練機内の木粉の滞留時間を短くでき、木粉の劣化を極力抑えることができる。 According to the invention of claim 5 , wood flour is supplied to the kneader from an intermediate position of the cylinder portion. For this reason, the residence time of wood flour in the kneader can be shortened, and deterioration of wood flour can be minimized.

請求項６の発明によると、木粉は、杉材の粉末である。
According to the invention of claim 6 , wood flour is cedar wood powder.

本発明によると、木粉が劣化しない温度以下で混練を行なえるようになり、高品質の高濃度の植物繊維強化樹脂を製造できる。   According to the present invention, it becomes possible to carry out kneading at a temperature below the temperature at which wood flour does not deteriorate, and high quality vegetable fiber reinforced resin can be produced.

本発明の実施形態１に係る植物繊維強化樹脂の製造方法を表わす模式図である。It is a schematic diagram showing the manufacturing method of the vegetable fiber reinforced resin which concerns on Embodiment 1 of this invention. 前記植物繊維強化樹脂のペレットと樹脂のペレットとを混合させる様子を表す模式図である。It is a schematic diagram showing a mode that the pellet of the said vegetable fiber reinforced resin and the pellet of resin are mixed. 前記植物繊維強化樹脂のペレットと樹脂のペレットとを混合させたブレンド品を使用して樹脂製品を成形する様子を表す模式図である。It is a schematic diagram showing a mode that a resin product is shape | molded using the blend product which made the pellet of the said vegetable fiber reinforced resin, and the pellet of resin mix. 前記植物繊維強化樹脂の製造方法において使用される混練機の模式側面図である。It is a model side view of the kneading machine used in the manufacturing method of the said vegetable fiber reinforced resin. 前記植物繊維強化樹脂の材料配合の重量比率を表わす円グラフである。It is a pie chart showing the weight ratio of material composition of the above-mentioned vegetable fiber reinforced resin. 前記植物繊維強化樹脂の材料配合表である。It is a material mixing table of the said vegetable fiber reinforced resin.

［実施形態１］
以下、図１から図６に基づいて本発明の実施形態１に係る植物繊維強化樹脂の製造方法と、植物繊維強化樹脂を用いて実際の自動車用の樹脂部品を製造する手順について説明する。ここで、前記自動車用の樹脂部品は、例えば、エンジンルーム内で使用されるワイヤーハーネス、あるいはフォグランプ等のブラケットである。 Embodiment 1
Hereinafter, a method for producing a plant fiber reinforced resin according to Embodiment 1 of the present invention and a procedure for producing a resin part for an actual automobile using a plant fiber reinforced resin will be described based on FIGS. 1 to 6. Here, the resin part for automobiles is, for example, a wire harness used in an engine room, or a bracket such as a fog lamp.

＜自動車用の樹脂部品の製造方法概要について＞
前記ワイヤーハーネス等の樹脂部品Ｗの材料としては、成形性に優れた熱可塑性樹脂であるポリプロピレン１２が好適に使用される。また、前記ワイヤーハーネス等の樹脂部品Ｗは、エンジンルーム内の高温環境下で使用されるため、強度や耐熱性に加えて、難燃性も要求される。このため、前記ポリプロピレン樹脂１２（以下、樹脂１２という）には、植物繊維としての木粉１４と難燃材等の添加剤１６とが加えられる。樹脂１２に対して木粉１４と難燃材等の添加剤１６とを加える場合には、図１に示すように、押出混練機２０が使用される。即ち、押出混練機２０では、樹脂１２を200℃程度に加熱して溶融させた状態で木粉１４等と混練する。ここで、木粉１４は、樹脂１２の温度が220℃を超えて上昇すると劣化するため、後記するように、混練時における添加剤１６の固形成分の重量比率を下げることで摩擦熱に起因する温度上昇を抑えている。 <About the outline of the manufacturing method of resin parts for automobiles>
As a material of resin parts W, such as the said wire harness, the polypropylene 12 which is a thermoplastic resin excellent in the moldability is used suitably. Moreover, since resin parts W, such as the said wire harness, are used in the high temperature environment in an engine room, in addition to intensity | strength and heat resistance, a flame retardance is also requested | required. For this reason, wood flour 14 as plant fiber and an additive 16 such as a flame retardant material are added to the polypropylene resin 12 (hereinafter referred to as resin 12). When the wood flour 14 and the additive 16 such as a flame retardant material are added to the resin 12, an extrusion kneader 20 is used as shown in FIG. That is, in the extrusion kneader 20, the resin 12 is kneaded with the wood powder 14 or the like in a state of being heated to about 200 ° C. and melted. Here, the wood powder 14 is degraded when the temperature of the resin 12 rises above 220 ° C., and therefore, as described later, it is caused by the frictional heat by lowering the weight ratio of the solid component of the additive 16 at the time of kneading. It is suppressing the temperature rise.

押出混練機２０は、規定量の樹脂１２に対して混練が可能な最大量の木粉１４を加え、さらに必要量の添加剤１６を添加して混練を行なうことで、高濃度の植物繊維強化樹脂１８を製造する。そして、押出混練機２０で混練された高濃度の植物繊維強化樹脂１８は所定サイズのペレットに成形される。次に、高濃度の植物繊維強化樹脂１８のペレットは、図２に示すように、樹脂１２のペレットと予め決められた比率で混合される。即ち、植物繊維強化樹脂１８のペレットは、樹脂部品Ｗに応じて予め決められた比率になるように、樹脂１２のペレットによって希釈される。そして、植物繊維強化樹脂１８のペレットと樹脂１２のペレットとのブレンド品１９が、図３に示すように、射出成形機に供給されて樹脂部品Ｗが成形される。このように、押出混練機２０で高濃度の植物繊維強化樹脂１８を製造し、後工程で高濃度の植物繊維強化樹脂１８を樹脂１２により希釈して使用する方法のため、押出混練機２０の能力を最大限に利用でき、低コスト化を図ることができる。   The extruding kneader 20 adds a maximum amount of wood powder 14 that can be kneaded to a prescribed amount of resin 12 and further adds a necessary amount of additives 16 to carry out kneading, thereby reinforcing high concentration vegetable fiber The resin 18 is manufactured. Then, the high concentration plant fiber reinforced resin 18 kneaded by the extrusion kneader 20 is formed into pellets of a predetermined size. Next, the high concentration pellet of vegetable fiber reinforced resin 18 is mixed with the pellet of resin 12 at a predetermined ratio, as shown in FIG. That is, the pellets of the vegetable fiber reinforced resin 18 are diluted by the pellets of the resin 12 so as to have a ratio determined in advance according to the resin part W. Then, a blended product 19 of the pellet of the plant fiber reinforced resin 18 and the pellet of the resin 12 is supplied to the injection molding machine as shown in FIG. 3, and the resin part W is molded. As described above, since the plant fiber reinforced resin 18 of high concentration is manufactured by the extrusion kneader 20 and the plant fiber reinforced resin 18 of high concentration is diluted with the resin 12 in a later step, the extrusion kneader 20 You can make the best use of your capabilities and reduce costs.

＜押出混練機２０について＞
押出混練機２０は、樹脂１２等を溶融させた状態で木粉１４、及び添加剤１６と混練させて、植物繊維強化樹脂１８を製造する機械である。押出混練機２０は、図４に示すように、混練機本体２００と、混練機本体２００から押出された植物繊維強化樹脂１８の軟化棒状体１８ｊを水冷する冷却槽２３と、冷却後の軟化棒状体１８ｊをペレットのサイズに切断するカッタ２５とを備えている。 <About extrusion kneader 20>
The extrusion kneader 20 is a machine which manufactures the vegetable fiber reinforced resin 18 by kneading the wood powder 14 and the additive 16 in a state where the resin 12 and the like are melted. The extrusion kneader 20, as shown in FIG. 4, includes a kneader body 200, a cooling tank 23 for water cooling the softened rod 18j of the vegetable fiber reinforced resin 18 extruded from the kneader body 200, and the softened rod after cooling. And a cutter 25 for cutting the body 18 j into a pellet size.

混練機本体２００は、図４に示すように、一端側（左側）に入口部２０１ｅ、他端側（右側）に出口部２０１ｐが設けられた円筒形のシリンダ部２０１と、そのシリンダ部２０１内に同軸に収納された螺旋状のスクリュー２０３とを備えている。そして、シリンダ部２０１の周囲には、シリンダ部２０１内を加熱するためのヒータ２０２が設けられている。また、シリンダ部２０１の下側には、そのシリンダ部２０１に沿って冷却装置２０４が設けられている。これにより、混練機本体２００は、シリンダ部２０１内の温度が約200℃に制御される。   As shown in FIG. 4, the kneader main body 200 has a cylindrical cylinder portion 201 provided with an inlet portion 201 e at one end (left side) and an outlet portion 201 p at the other end side (right side), and the inside of the cylinder portion 201. And a helical screw 203 coaxially housed. Further, a heater 202 for heating the inside of the cylinder unit 201 is provided around the cylinder unit 201. Further, a cooling device 204 is provided below the cylinder portion 201 along the cylinder portion 201. Thereby, the temperature in the cylinder part 201 of the kneading machine main body 200 is controlled to about 200.degree.

また、混練機本体２００は、シリンダ部２０１の入口部２０１ｅ側にモータ等を備える駆動装置２０５が設けられており、駆動装置２０５の減速機２０５ｗの出力軸（図示省略）がスクリュー２０３に同軸に連結されている。このため、駆動装置２０５が駆動されることで、スクリュー２０３がシリンダ部２０１内で軸心回りに回転し、混練が行なわれる。さらに、混練機本体２００は、シリンダ部２０１の入口部２０１ｅに樹脂１２のペレット等を供給する第１ホッパー２０７と、シリンダ部２０１の途中位置に木粉１４及び難燃材等の添加剤１６を供給する第２ホッパー２０８とを備えている。   Further, the kneader main body 200 is provided with a drive device 205 provided with a motor or the like on the inlet 201e side of the cylinder portion 201, and the output shaft (not shown) of the reduction gear 205w of the drive device 205 is coaxial with the screw 203 It is connected. For this reason, when the drive device 205 is driven, the screw 203 rotates around the axis in the cylinder portion 201, and kneading is performed. Furthermore, the kneader main body 200 includes a first hopper 207 that supplies pellets of the resin 12 and the like to the inlet portion 201e of the cylinder portion 201, and wood powder 14 and an additive 16 such as a flame retardant in the middle position of the cylinder portion 201. And a second hopper 208 for supplying.

＜高濃度の植物繊維強化樹脂１８の材料配合について＞
高濃度の植物繊維強化樹脂１８の材料としては、図５、図６に示すように、ポリプロピレン樹脂１２（融点165℃、比重0.9、分子量265000 図６参照）が使用される。ここで、全体に対する樹脂１２の重量比率は40.2％に設定されている。さらに、樹脂部品Ｗの強度と耐熱性とを向上させるため、木粉１４が添加される。ここで、木粉１４の重量比率は、全体の31.7％に設定されており、混練が可能な最大値である。なお、木粉１４には杉の間伐材の粉末が使用される。 <About the material combination of high concentration of vegetable fiber reinforced resin 18>
As a material of the high concentration vegetable fiber reinforced resin 18, as shown in FIGS. 5 and 6, polypropylene resin 12 (melting point 165 ° C., specific gravity 0.9, molecular weight 265000 see FIG. 6) is used. Here, the weight ratio of the resin 12 to the whole is set to 40.2%. Furthermore, in order to improve the strength and heat resistance of the resin part W, wood powder 14 is added. Here, the weight ratio of wood flour 14 is set to 31.7% of the whole, which is the maximum value at which kneading is possible. In addition, the powder of a cedar thinning material is used for the wood flour 14.

また、樹脂部品Ｗの難燃性を向上させるための添加剤１６として、難燃材が重量比率で13.5％、難燃材の働きを促進させる難燃助剤が重量比率で6.8％添加される。ここで、難燃材としてはジブロモプロピルエーテル（融点95〜115℃、比重1.1、分子量1580）、難燃助剤としては三酸化アンチモン（融点656℃、比重5.2、分子量291.5）が使用される。さらに、添加剤１６として樹脂１２（ポリポロピレン（PP））の耐熱劣化を防止するための酸化防止剤が重量比率で5.8％添加される。ここで、酸化防止剤としては、Pentaerythritol Tetrakis（融点110〜125℃、比重1.15、分子量1178）が使用される。   Further, as the additive 16 for improving the flame retardancy of the resin part W, 13.5% by weight of the flame retardant is added, and 6.8% by weight of the flame retardant auxiliary for promoting the function of the flame retardant is added. . Here, dibromopropyl ether (melting point 95-115 ° C., specific gravity 1.1, molecular weight 1580) is used as a flame retardant, and antimony trioxide (melting point 656 ° C., specific gravity 5.2, molecular weight 291.5) is used as a flame retardant auxiliary. Furthermore, an antioxidant for preventing the heat degradation of the resin 12 (polypolopyrene (PP)) is added as the additive 16 at a weight ratio of 5.8%. Here, Pentaerythritol Tetrakis (melting point 110-125 ° C., specific gravity 1.15, molecular weight 1178) is used as the antioxidant.

その他の添加剤１６として、樹脂１２と難燃材等とを混ざり易くするための相溶化剤、例えば、MAPP（Maleic anhydride-modified polypropylene ）（融点160℃、比重0.9）が重量比率で1.4％添加される。また、電線に使用される銅に対する銅害防止材（融点225〜227℃）が重量比率で0.6％添加される。ここで、前記押出混練機２０では、シリンダ部２０１内の温度が約200℃に温度制御されている。このため、上記した植物繊維強化樹脂１８の材料の中で、融点が200℃よりも低い材料、即ち、樹脂１２（融点165℃）（40.2％）、難燃材（融点95〜115℃）（13.5％）、酸化防止剤（融点110〜125℃）（5.8％）、相溶化剤（融点160℃）（1.4％）が押出混練機２０のシリンダ部２０１内で溶融するようになる。   As the other additive 16, a compatibilizer for easily mixing the resin 12 with the flame retardant or the like, for example, MAPP (Maleic anhydride-modified polypropylene) (melting point 160 ° C., specific gravity 0.9) is added at a weight ratio of 1.4% Be done. Moreover, 0.6% by weight ratio is added to the copper damage prevention material (melting point 225-227 degreeC) with respect to the copper used for an electric wire. Here, in the extrusion kneader 20, the temperature in the cylinder portion 201 is controlled to about 200 ° C. For this reason, among the materials of the vegetable fiber reinforced resin 18 described above, materials having a melting point lower than 200 ° C., that is, resin 12 (melting point 165 ° C.) (40.2%), flame retardant material (melting point 95-115 ° C.) 13.5%), antioxidant (melting point 110 to 125 ° C.) (5.8%), and compatibilizing agent (melting point 160 ° C.) (1.4%) come to melt in the cylinder portion 201 of the extrusion kneader 20.

さらに、融点が200℃よりも低い材料であっても、樹脂１２は融点165℃で、分子量265000であるのに対し、難燃材は融点95〜115℃で分子量1580、酸化防止剤は融点110〜125℃で分子量1178であるため、難燃材及び酸化防止剤は樹脂１２に対して格段に溶融し易くなる。さらに、樹脂１２の比重が0.9に対して、難燃材の比重が1.1、酸化防止剤の比重が1.15であるため、樹脂１２は、難燃材及び酸化防止剤に対して浮き易くなる。また、相溶化剤は融点160℃であるため、樹脂１２よりも溶融し易くなる。なお、相溶化剤の比重は0.9で樹脂１２と等しいため、相溶化剤は難燃材及び酸化防止剤に対して浮き易くなる。   Furthermore, even if the material has a melting point lower than 200 ° C., the resin 12 has a melting point of 165 ° C. and a molecular weight of 265,000 while the flame retardant material has a melting point of 95 to 115 ° C. and a molecular weight of 1580. Since the molecular weight is 1178 at ̃125 ° C., the flame retardant and the antioxidant are much easier to melt than the resin 12. Furthermore, since the specific gravity of the flame retardant is 1.1 and the specific gravity of the antioxidant is 1.15 with respect to the specific gravity of the resin 12 being 0.9, the resin 12 tends to float with respect to the flame retardant and the antioxidant. Further, since the compatibilizer has a melting point of 160 ° C., it becomes easier to melt than the resin 12. In addition, since the specific gravity of the compatibilizer is 0.9 and is equal to that of the resin 12, the compatibilizer is easily floated to the flame retardant material and the antioxidant.

即ち、難燃材、酸化防止剤、及び相溶化剤が本発明における樹脂が溶融する温度よりも低い温度で溶融する第１の添加剤に相当する。前述のように、樹脂１２の重量比率は40.2％であり、第１の添加剤の重量比率、即ち、（難燃材の重量比率13.5％）＋（酸化防止剤の重量比率5.8％）＋（相溶化剤の重量比率1.4％）が20.7％であるため、混練時に溶融する材料の比率は全体の60.9％になる。   That is, the flame retardant, the antioxidant, and the compatibilizer correspond to the first additive that melts at a temperature lower than the temperature at which the resin of the present invention melts. As described above, the weight ratio of the resin 12 is 40.2%, and the weight ratio of the first additive, that is, (the weight ratio of the flame retardant 13.5%) + (the weight ratio of the antioxidant 5.8%) + (the Since the weight ratio of the compatibilizer is 20.7%, the ratio of the materials melted at the time of kneading is 60.9% of the whole.

また、上記した植物繊維強化樹脂１８の材料の中で、木粉１４と、融点が200℃よりも高い難燃助剤（融点656℃、比重5.2、分子量291.5）、及び銅害防止材（融点225〜227℃）は、押出混練機２０のシリンダ部２０１内で固形成分として残される。即ち、難燃助剤と銅害防止材とが本発明における樹脂が溶融する温度で固化している第２の添加剤に相当する。前述のように、木粉１４の重量比率は31.7％であり、第２の添加剤の重量比率、即ち、（難燃助剤の重量比率6.8％）＋（銅害防止材の重量比率0.6％）が7.4％であるため、混練時の固形成分の重量比率が全体の39.1％になる。   Further, among the materials of the plant fiber reinforced resin 18 described above, wood powder 14, a flame retardant auxiliary agent having a melting point higher than 200 ° C. (melting point 656 ° C., specific gravity 5.2, molecular weight 291.5), and copper damage preventing material (melting point 225 to 227 ° C. is left as a solid component in the cylinder portion 201 of the extrusion kneader 20. That is, the flame retardant aid and the copper damage prevention material correspond to the second additive solidified at the temperature at which the resin of the present invention melts. As described above, the weight ratio of wood flour 14 is 31.7%, and the weight ratio of the second additive, that is, (the weight ratio of the flame retardant auxiliary 6.8%) + (the weight ratio of the copper damage inhibitor 0.6% ) Is 7.4%, so the weight ratio of solid components at the time of kneading is 39.1% of the whole.

＜押出混練機２０に対する材料供給手順について＞
上記したように、第１の添加剤である難燃材（融点95〜115℃、分子量1580、比重1.1）、酸化防止剤（融点110〜125℃、分子量1178、比重1.15）は、樹脂１２（融点165℃、分子量265000、比重0.9）に対して溶融し易く、さらに比重が大きい。このため、仮に、樹脂１２と、難燃材、及び酸化防止剤とを同時に押出混練機２０に供給すると、溶融した難燃材、酸化防止剤に対して樹脂１２のペレットが浮き上がり、樹脂１２が溶融し難くなる。これにより、樹脂１２の一部が固形成分のまま残留し、混練が良好に行なわれなくなる。 <About the material supply procedure to the extrusion kneading machine 20>
As described above, the first additive, the flame retardant (melting point 95 to 115 ° C., molecular weight 1580, specific gravity 1.1), and the antioxidant (melting point 110 to 125 ° C., molecular weight 1178, specific gravity 1.15) It easily melts to a melting point of 165 ° C., a molecular weight of 265,000, and a specific gravity of 0.9), and further has a large specific gravity. Therefore, if the resin 12, the flame retardant and the antioxidant are simultaneously supplied to the extrusion kneader 20, the pellet of the resin 12 floats up against the melted flame retardant and the antioxidant, and the resin 12 becomes It becomes difficult to melt. As a result, a part of the resin 12 remains as a solid component, and the kneading can not be performed well.

この問題を解決するため、本実施形態に係る植物繊維強化樹脂１８の製造方法では、樹脂１２と、前記樹脂１２と比重が等しい相溶化剤（第１の添加剤）とを第１ホッパー２０７から混練機本体２００（シリンダ部２０１）の入口部２０１ｅに供給するようにしている。そして、難燃材と酸化防止剤（第１の添加剤）を第２ホッパー２０８からシリンダ部２０１の途中位置に供給するようにしている。これにより、樹脂１２のペレット等がシリンダ部２０１の入口部２０１ｅからシリンダ部２０１の途中位置まで移動する間に完全に溶融する。そして、溶融した樹脂１２に対してシリンダ部２０１の途中位置から溶け易い難燃材と酸化防止剤（第１の添加剤）が加えられる。これにより、比重の大きな難燃材と酸化防止剤（第１の添加剤）とが溶融した樹脂１２に沈んだ状態で溶融するようになる。したがって、樹脂１２等の溶け残りを防止できる。   In order to solve this problem, in the method for producing the vegetable fiber reinforced resin 18 according to the present embodiment, the resin 12 and the compatibilizer (first additive) having the same specific gravity as the resin 12 are added from the first hopper 207 The ink is supplied to the inlet portion 201e of the kneading machine main body 200 (the cylinder portion 201). Then, the flame retardant and the antioxidant (first additive) are supplied from the second hopper 208 to an intermediate position of the cylinder portion 201. As a result, the pellet or the like of the resin 12 is completely melted while moving from the inlet portion 201 e of the cylinder portion 201 to the middle position of the cylinder portion 201. Then, a flame retardant material and an antioxidant (first additive) which are easily melted are added to the melted resin 12 from an intermediate position of the cylinder portion 201. As a result, the flame retardant having a large specific gravity and the antioxidant (first additive) are melted in the melted state in the melted resin 12. Therefore, the unmelted residue of the resin 12 and the like can be prevented.

また、他の材料、即ち、難燃助剤、銅害防止剤（第２の添加剤）、及び木粉１４が第２ホッパー２０８からシリンダ部２０１の途中位置に供給される。このため、完全に溶けた状態の樹脂１２、及び相溶化剤、難燃材、酸化防止剤（第１の添加剤）に対して固形成分である難燃助剤、銅害防止剤（第２の添加剤）、及び木粉１４が加えられる混練が行なわれる。上記したように、混練時の溶融成分（樹脂１２＋第１の添加剤）の重量比率が60.9％で、固形成分（木粉１４＋第２の添加剤）の重量比率が39.1％である。即ち、固形成分（木粉１４＋第２の添加剤）の重量比率が40％以下であるため、混練時の摩擦熱に起因する温度上昇を抑えることができる。このため、混練機本体２００のシリンダ部２０１内における樹脂１２の温度を約200℃に保持することができ、木粉１４の劣化やガスの発生を抑えることができる。さらに、木粉１４を第２ホッパー２０８からシリンダ部２０１の途中位置に供給するため、木粉１４の混練機本体２００（シリンダ部２０１）内の滞留時間が短くなり、木粉１４の劣化をさらに抑えることができる。   In addition, other materials, that is, a flame retardant aid, a copper inhibitor (second additive), and wood powder 14 are supplied from the second hopper 208 to an intermediate position of the cylinder portion 201. For this reason, the resin 12 in a completely dissolved state, a compatibilizer, a flame retardant, a flame retardant aid which is a solid component with respect to the antioxidant (first additive), a copper damage inhibitor (second example) And wood flour 14 are added. As described above, the weight ratio of the molten component (resin 12 + first additive) at the time of kneading is 60.9%, and the weight ratio of the solid component (wood flour 14 + second additive) is 39.1%. That is, since the weight ratio of the solid component (wood flour 14 + second additive) is 40% or less, the temperature rise due to the frictional heat at the time of kneading can be suppressed. Therefore, the temperature of the resin 12 in the cylinder portion 201 of the kneading machine main body 200 can be maintained at about 200 ° C., and deterioration of the wood powder 14 and generation of gas can be suppressed. Furthermore, in order to supply the wood flour 14 from the second hopper 208 to an intermediate position of the cylinder part 201, the residence time of the wood flour 14 in the kneading machine main body 200 (cylinder part 201) becomes short, and the wood flour 14 is further deteriorated. It can be suppressed.

＜本実施形態に係る植物繊維強化樹脂の製造方法の長所＞
本実施形態に係る植物繊維強化樹脂の製造方法によると、全体に対する樹脂１２と第１の添加剤１６との重量比率が60％以上に設定されている。ここで、第１の添加剤１６は、樹脂１２が溶融する温度よりも低い温度で溶融する。このため、第１の添加剤１６は、押出混練機２０による混練の際に、樹脂１２と共に溶融するようになる。このため、混練時に、溶融する樹脂１２と第１の添加剤１６とが重量比率で60％以上となり、溶融しない固形成分である木粉１４と第２の添加剤１６とが重量比率で40％以下となる。このように、混練の際、固形成分が重量比率で40％以下となるため、混練による摩擦熱が発生し難く、材料の温度上昇を抑えることができる。この結果、木粉１４の劣化が抑制され、高品質の高濃度植物繊維強化樹脂１８を製造できる。 <Advantages of the method for producing a plant fiber reinforced resin according to the present embodiment>
According to the method for producing a plant fiber reinforced resin of the present embodiment, the weight ratio of the resin 12 and the first additive 16 to the whole is set to 60% or more. Here, the first additive 16 melts at a temperature lower than the temperature at which the resin 12 melts. For this reason, the first additive 16 comes to melt together with the resin 12 at the time of kneading by the extrusion kneader 20. For this reason, at the time of kneading, the resin 12 and the first additive 16 that are melted become 60% or more by weight ratio, and the wood powder 14 and the second additive 16 that are solid components that are not melted are 40% by weight It becomes below. As described above, at the time of kneading, the solid component is 40% or less by weight ratio, so that the frictional heat due to the kneading hardly occurs, and the temperature rise of the material can be suppressed. As a result, deterioration of the wood flour 14 is suppressed, and high-quality high-density plant fiber reinforced resin 18 can be manufactured.

また、第１の添加剤１６の重量比率を20％よりも多くすることで、樹脂１２と木粉１４との重量比率を変えずに、溶融する材料（樹脂１２、第１の添加剤１６）の重量比率を60％以上とすることができる。さらに、樹脂１２はシリンダ部２０１の入口部２０１ｅから押出混練機２０に供給され、第１の添加剤１６（難燃材、酸化防止剤）は、シリンダ部２０１の途中位置から押出混練機２０に供給される。このため、樹脂１２が確実に溶融した状態で第１の添加剤１６（難燃材、酸化防止剤）を押出混練機２０に供給できる。このため、樹脂１２のペレットが難燃材、酸化防止剤に浮いた状態で溶けずに残るような不具合を防止できる。また、木粉１４は、シリンダ部２０１の途中位置から押出混練機２０に供給されるため、押出混練機２０内の木粉１４の滞留時間を短くでき、木粉１４の劣化を極力抑えることができる。   Also, by setting the weight ratio of the first additive 16 to be more than 20%, the material to be melted without changing the weight ratio of the resin 12 and the wood powder 14 (resin 12, first additive 16) Weight ratio of 60% or more. Further, the resin 12 is supplied from the inlet portion 201e of the cylinder portion 201 to the extrusion kneader 20, and the first additive 16 (a flame retardant material, an antioxidant) is added to the extrusion kneader 20 from the middle position of the cylinder portion 201. Supplied. For this reason, the first additive 16 (a flame retardant, an antioxidant) can be supplied to the extrusion kneader 20 in a state where the resin 12 is reliably melted. For this reason, it is possible to prevent such a problem that the pellet of the resin 12 remains unmelted in a floating state in the flame retardant material and the antioxidant. Further, since the wood flour 14 is supplied to the extrusion kneader 20 from an intermediate position of the cylinder portion 201, the residence time of the wood flour 14 in the extrusion kneader 20 can be shortened and deterioration of the wood flour 14 can be minimized. it can.

＜変更例＞
なお、本発明は上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲における変更が可能である。例えば、本実施形態では、樹脂１２としてポリプロピレンを例示したが、ポリプロピレン以外の樹脂に本発明を適用することも可能である。また、本実施形態では、第２ホッパー２０８から難燃材と酸化防止剤（第１の添加剤）、難燃助剤、銅害防止剤（第２の添加剤）、及び木粉１４を押出混練機２０のシリンダ部２０１の途中位置に供給する例を示した。しかし、第１ホッパー２０７と第２ホッパー２０８との間に第３ホッパー等を設け、第３ホッパー等から難燃材と酸化防止剤（第１の添加剤）を木粉１４等よりも先にシリンダ部２０１の途中位置に供給することも可能である。 <Modification example>
The present invention is not limited to the above embodiment, and modifications can be made without departing from the scope of the present invention. For example, although polypropylene is illustrated as the resin 12 in the present embodiment, it is also possible to apply the present invention to resins other than polypropylene. Further, in the present embodiment, the flame retardant and the antioxidant (first additive), the flame retardant assistant, the copper inhibitor (second additive), and the wood powder 14 are extruded from the second hopper 208. The example which supplied to the middle position of the cylinder part 201 of the kneading machine 20 was shown. However, a third hopper or the like is provided between the first hopper 207 and the second hopper 208, and the flame retardant and the antioxidant (first additive) are preceded from the wood flour 14 etc. from the third hopper or the like. It is also possible to supply to the middle position of the cylinder part 201.

１２・・・・樹脂（ポリプロピレン）
１４・・・・木粉
１６・・・・添加剤（第１の添加剤、第２の添加剤）
１８・・・・植物繊維強化樹脂
２０・・・・押出混練機
２００・・・混練機本体
２０１・・・シリンダ部
２０１ｅ・・入口部
２０１ｐ・・出口部
２０３・・・スクリュー
Ｗ・・・・・樹脂部品
12 ・ ・ ・ Resin (polypropylene)
14 ··· Wood powder 16 ··· Additives (first additive, second additive)
18 ... Plant fiber reinforced resin 20 ... Extruding and kneading machine 200 ... Kneading machine main body 201 ... Cylinder section 201 e · · Entrance section 201 p · · Exit section 203 ... Screw W · · ·・ Resin parts

Claims (6)

規定量のポリプロピレン樹脂と、前記ポリプロピレン樹脂に対して混練が可能な最大量の木粉と、前記ポリプロピレン樹脂と木粉との量に応じて決められた量の添加剤とを混練機に供給し、前記ポリプロピレン樹脂を溶融させた状態で混練を行なうことにより植物繊維強化樹脂を製造する植物繊維強化樹脂の製造方法であって、
前記ポリプロピレン樹脂は、前記木粉が劣化を開始する温度よりも低い温度で溶融可能な構成であり、
前記添加剤は、前記ポリプロピレン樹脂が溶融する温度よりも低い温度で溶融する第１の添加剤と、前記ポリプロピレン樹脂が溶融する温度で固化している第２の添加剤とを備えており、
前記第１の添加剤は、難燃材と酸化防止剤と相溶化剤とからなり、
前記第２の添加剤は、難燃助剤と銅害防止材とからなり、
全体に対する前記ポリプロピレン樹脂と前記第１の添加剤との重量比率が60％以上に設定されており、
前記第１の添加剤の重量比率が前記第２の添加剤の重量比率よりも大きく設定されている植物繊維強化樹脂の製造方法。 And specified amount of the polypropylene resin, and wood flour maximum kneading capable amount, and an additive in an amount which is determined according to the amount of the polypropylene resin and the wood flour was fed into a kneader to the polypropylene resin A method for producing a vegetable fiber reinforced resin, which comprises producing a vegetable fiber reinforced resin by kneading in a state where the polypropylene resin is melted,
The polypropylene resin is configured to be meltable at a temperature lower than the temperature at which the wood flour starts to deteriorate.
The additive comprises a first additive, wherein the polypropylene resin melts at a temperature lower than the temperature of melting, and a second additive, wherein the polypropylene resin is solidified at a temperature of melting,
The first additive comprises a flame retardant material, an antioxidant and a compatibilizer,
The second additive comprises a flame retardant aid and a copper damage inhibitor,
The weight ratio of the polypropylene resin and the first additive to the whole is set to 60% or more ,
The manufacturing method of the vegetable fiber reinforced resin in which the weight ratio of a said 1st additive is set larger than the weight ratio of a said 2nd additive . 請求項１に記載された植物繊維強化樹脂の製造方法であって、
全体に対する前記第１の添加剤の重量比率が20％を超えている植物繊維強化樹脂の製造方法。 It is a manufacturing method of the vegetable fiber reinforced resin described in Claim 1, Comprising:
The manufacturing method of the vegetable fiber reinforced resin in which the weight ratio of said 1st additive with respect to the whole exceeds 20% . 請求項１又は請求項２のいずれかに記載された植物繊維強化樹脂の製造方法であって、
前記第１の添加剤の比重は、前記ポリプロピレン樹脂の比重よりも大きく設定されており、
前記第１の添加剤は、前記ポリプロピレン樹脂が混練機に供給された後で、前記混練機に供給される植物繊維強化樹脂の製造方法。 A method for producing a plant fiber reinforced resin according to any one of claims 1 or 2 ,
The specific gravity of the first additive is set to be larger than the specific gravity of the polypropylene resin,
The method of producing a vegetable fiber reinforced resin, wherein the first additive is supplied to the kneader after the polypropylene resin is supplied to the kneader . 請求項３に記載された植物繊維強化樹脂の製造方法であって、
前記混練機は、一端側に入口部、他端側に出口部が設けられたシリンダ部と、前記シリンダ部の内側で軸心回りに回転可能に構成された混練用のスクリューとを備え、前記シリンダ部の出口部から混練後の製品が押出される構成であり、
前記ポリプロピレン樹脂は前記シリンダ部の入口部から前記混練機に供給され、前記第１の添加剤は、前記シリンダ部の途中位置から前記混練機に供給される植物繊維強化樹脂の製造方法。 It is a manufacturing method of the vegetable fiber reinforced resin described in Claim 3 , Comprising:
The kneader includes a cylinder portion having an inlet at one end and an outlet at the other end, and a kneading screw configured to be rotatable around an axis inside the cylinder, The product after kneading is extruded from the outlet of the cylinder,
The manufacturing method of the vegetable fiber reinforced resin by which the said polypropylene resin is supplied to the said kneader from the inlet part of the said cylinder part, and the said 1st additive is supplied to the said kneader from the middle position of the said cylinder part . 請求項４に記載された植物繊維強化樹脂の製造方法であって、
前記木粉は、前記シリンダ部の途中位置から前記混練機に供給される植物繊維強化樹脂の製造方法。 It is a manufacturing method of the vegetable fiber reinforced resin described in Claim 4 , Comprising:
The method for producing a vegetable fiber reinforced resin, wherein the wood flour is supplied to the kneader from an intermediate position of the cylinder portion . 請求項１から請求項５のいずれかに記載された植物繊維強化樹脂の製造方法であって、
前記木粉は、杉材の粉末である植物繊維強化樹脂の製造方法。 A method for producing a plant fiber reinforced resin according to any one of claims 1 to 5 ,
The said wood flour is a manufacturing method of the vegetable fiber reinforced resin which is a powder of a cedar wood .
JP2016064006A 2016-03-28 2016-03-28 Method for producing plant fiber reinforced resin Active JP6544773B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016064006A JP6544773B2 (en) 2016-03-28 2016-03-28 Method for producing plant fiber reinforced resin
PCT/JP2016/083647 WO2017168819A1 (en) 2016-03-28 2016-11-14 Vegetable fiber-reinforced resin production method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016064006A JP6544773B2 (en) 2016-03-28 2016-03-28 Method for producing plant fiber reinforced resin

Publications (2)

Publication Number Publication Date
JP2017177372A JP2017177372A (en) 2017-10-05
JP6544773B2 true JP6544773B2 (en) 2019-07-17

Family

ID=59962838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016064006A Active JP6544773B2 (en) 2016-03-28 2016-03-28 Method for producing plant fiber reinforced resin

Country Status (2)

Country Link
JP (1) JP6544773B2 (en)
WO (1) WO2017168819A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020011452A (en) * 2018-07-18 2020-01-23 住友林業株式会社 Manufacturing method of compression molding of cellulose fiber

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10273538A (en) * 1997-03-31 1998-10-13 Mitsui Chem Inc Production of polyolefin composition containing woody material
JP3540997B2 (en) * 2000-09-22 2004-07-07 リケンテクノス株式会社 Biodegradable woody aliphatic polyester resin composition and method for producing the same
JP2002138202A (en) * 2000-10-31 2002-05-14 Ykk Corp Molded article from cellulose powder-containing composite resin and method for producing the same
JP2004189903A (en) * 2002-12-12 2004-07-08 Riken Technos Corp Biodegradable ligneous aliphatic polyester resin composition and method for producing the same
JP4572516B2 (en) * 2003-07-18 2010-11-04 東レ株式会社 Method for producing resin composition
US20060267238A1 (en) * 2005-05-31 2006-11-30 Walter Wang Polymer wood composite material and method of making same
JP5674536B2 (en) * 2010-04-12 2015-02-25 サンキョー化成株式会社 Plant-based resin pellet, method for producing the same, and injection molding apparatus using plant-based resin material
JP2013082117A (en) * 2011-10-07 2013-05-09 Namba Press Works Co Ltd Method for producing lightweight wood plastic foam molding
JP5624534B2 (en) * 2011-12-20 2014-11-12 Ｗｐｃコーポレーション株式会社 Woody synthetic powder

Also Published As

Publication number Publication date
WO2017168819A1 (en) 2017-10-05
JP2017177372A (en) 2017-10-05

Similar Documents

Publication Publication Date Title
KR101837878B1 (en) Method for producing transparent resin composition
JP5541563B2 (en) High shear device
CN107216517B (en) Preparation method of ultrahigh molecular weight polyethylene 3D printing supplies
US20170050359A1 (en) Injection molding apparatus
JP6544773B2 (en) Method for producing plant fiber reinforced resin
CN107513207B (en) Preparation method of 150 ℃ high-flame-retardance irradiation crosslinking low-smoke halogen-free cable material
ES2713676T3 (en) Overmolding procedure on a plastic insert element and automobile part obtained by this procedure
DE102012109502A1 (en) Process for the preparation of an inorganic or organic pasty molten mass
JPWO2016052480A1 (en) Resin composition for gas injection molding, hollow molded body obtained using the same, and method for producing the hollow molded body
RU2009142206A (en) METHOD FOR PRODUCING CANDLES
CN112159588A (en) Low-warpage 3D printing PA/PPO alloy consumable and preparation method thereof
CN105273329A (en) Domestic gas hose, processing process thereof and special-purposed production device thereof
CN113665100B (en) Co-rotating conical double-screw fused deposition modeling extrusion type 3D printing nozzle
JP2001506197A (en) Hose manufacturing method
US20110184100A1 (en) Soft, pelletized poly(vinyl chloride) plastisol
JP3212379B2 (en) In-line two-stage extruder
JPH05285941A (en) Kneading method for resin composition
WO2018079237A1 (en) Cleaning agent and method for cleaning resin processing machine
JP3399234B2 (en) Originating composition containing long-fiber reinforced polyolefin crystalline resin and molded article comprising the same
JP6167707B2 (en) Injection molding apparatus and method for producing glass fiber reinforced resin
JP4690541B2 (en) Method for producing thermoplastic graft polymer
JP2008222749A (en) Crystalline polypropylene-based resin composition
CN108395664A (en) A kind of ABS injection moulding compositions, the preparation method of ABS injected plastics materials and refrigerator door handle and preparation method thereof
JP5426867B2 (en) Polybutylene terephthalate resin molded product with weld
CN216139361U (en) Injection screw rod applied to PET mixing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180524

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190326

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190425

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190604

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20190612

R150 Certificate of patent or registration of utility model

Ref document number: 6544773

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250