JP3234877B2 - Method for producing fiber reinforced resin pellets - Google Patents
Method for producing fiber reinforced resin pelletsInfo
- Publication number
- JP3234877B2 JP3234877B2 JP12128698A JP12128698A JP3234877B2 JP 3234877 B2 JP3234877 B2 JP 3234877B2 JP 12128698 A JP12128698 A JP 12128698A JP 12128698 A JP12128698 A JP 12128698A JP 3234877 B2 JP3234877 B2 JP 3234877B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber bundle
- fiber
- die
- resin
- impregnated
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、機械的強度、耐熱
性等に優れた繊維強化樹脂成形品用の繊維強化樹脂ペレ
ットの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing fiber-reinforced resin pellets for a fiber-reinforced resin molded product having excellent mechanical strength and heat resistance.
【０００２】[0002]
【従来の技術】各種の繊維強化樹脂は、近年、自動車，
家電等を初めとする種々の分野において利用されるよう
になってきた。一方、従来の繊維強化樹脂からなる製品
を成形する材料は、スタンパブルシートを除き、押出機
内において強化繊維を樹脂中に混練し、万遍なく分散さ
せた上で押し出し、その後、ペレツト化するなどして製
品化していた。2. Description of the Related Art In recent years, various fiber reinforced resins have been used in automobiles,
It has been used in various fields including home appliances. On the other hand, the material used to mold products made of conventional fiber-reinforced resin, except for the stampable sheet, is to knead the reinforcing fiber into the resin in an extruder, disperse it uniformly, extrude it, and then pelletize it. Had been commercialized.
【０００３】このとき、押出機内における混練，移送及
び押出機より押し出す際の樹脂の流動性を考慮すると、
強化繊維はなるべく短く切断して用いる必要があった。
このため、曲げ、衝撃等に対する強度が十分でなく、強
化繊維の利点を十分活しきれないという問題があった。
また、強化繊維の混入により押出機のスクリュー等の摩
耗も激しくなるという問題があった。At this time, considering the fluidity of the resin when kneading and transferring in the extruder and extruding from the extruder,
The reinforcing fibers had to be cut and used as short as possible.
For this reason, there is a problem that the strength against bending, impact and the like is not sufficient, and the advantages of the reinforcing fiber cannot be fully utilized.
In addition, there is a problem that abrasion of a screw of an extruder becomes severe due to mixing of reinforcing fibers.
【０００４】そこで、このような問題を解決するため、
混練工程及び押出工程を介することなく繊維強化熱可塑
性樹脂を生産する方法が注目され、次の〜のような
方法が提案されている。あらかじめ、繊維束に樹脂粉
末を付着させ、その後加熱溶融させる方法（特公昭52ー3
985 号など）。ロービングをダイ内に引き込み、溶融
樹脂を含浸させた後、引き抜く方法（特公昭52ー10140
号、同64ー7848 号など）。Therefore, in order to solve such a problem,
Attention has been paid to a method of producing a fiber-reinforced thermoplastic resin without going through a kneading step and an extrusion step, and the following methods have been proposed. A method in which a resin powder is attached to a fiber bundle in advance and then heated and melted (Japanese Patent Publication No. 52-3
985). A method in which the roving is drawn into a die, impregnated with the molten resin, and then pulled out (Japanese Patent Publication No. 52-10140).
No. 64-7848).
【０００５】ダイ内部で繊維束に溶融樹脂を含浸させ
る際、繊維束の側面を押圧しながら含浸する方法 （特
開平1ー178411号）。繊維束を複数の供給口からダイ内
部に供給し、溶融樹脂を含浸させる方法（USP Re.32772
号) 。When impregnating a fiber bundle with a molten resin inside a die, a method of impregnating the fiber bundle while pressing the side surface of the fiber bundle (Japanese Patent Laid-Open No. 1-178411). A method in which fiber bundles are supplied into the die from multiple supply ports and impregnated with molten resin (USP Re.32772
No.)
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上述し
た〜の方法には、次のような解決すべき課題があっ
た。すなわち、の方法は、製造工程が非常に大掛りと
なって、製造コストが大幅に高くなるため実用化するこ
とが困難であった。の方法は、熱可塑性樹脂の溶融粘
度が高いため、熱硬化性樹脂のように繊維束中に樹脂が
うまく含浸せず、繊維の開繊，分散が十分行なわれない
という問題があった。However, the above-mentioned methods have the following problems to be solved. In other words, the method of (1) requires a very large manufacturing process and significantly increases the manufacturing cost, so that it has been difficult to commercialize the method. In the method (2), since the melt viscosity of the thermoplastic resin is high, the resin does not impregnate the fiber bundle as well as the thermosetting resin, and there is a problem that the fibers are not sufficiently opened and dispersed.
【０００７】の方法は、繊維束の側面を単にロッド等
で押し付けているに過ぎないため、繊維束に大きな張力
がかからず繊維束の開繊，分散が十分行われなかった。
特に、繊維束の引き出し速度を速めたとき、あるいは低
温度で熱劣化を起こす熱可塑性樹脂を用いた場合のよう
に溶融樹脂温度を高くできないときに、この開繊不足現
象が顕著であった。の方法も、成形した成形材料から
ペレットを得るものではないことから、強化用の繊維を
ダイスの途中から導入することによって繊維と樹脂の接
触をよくするようにしたものであるものの、繊維束に
は、張力をかけておらず、繊維束の開繊と分散は行って
いない。In the method (1), since only the side surface of the fiber bundle is pressed with a rod or the like, a large tension is not applied to the fiber bundle and the fiber bundle is not sufficiently opened and dispersed.
In particular, when the drawing speed of the fiber bundle is increased or when the temperature of the molten resin cannot be increased as in the case of using a thermoplastic resin which causes thermal deterioration at a low temperature, the insufficient fiber opening phenomenon is remarkable. Is also not intended to obtain pellets from the formed molding material, so that reinforcing fibers are introduced from the middle of the die to improve the contact between the fibers and the resin. Is not tensioned and does not open or disperse the fiber bundle.
【０００８】本発明は、上記課題にかんがみてなされた
もので、繊維束の開繊，分散を十分に行って、繊維の間
に溶融状態の熱可塑性樹脂を十分含浸させることによ
り、長い強化繊維を含み機械的強度が高く耐熱性に優れ
た繊維強化樹脂成形品用の繊維強化樹脂ペレットの効率
的な製造方法の提供を目的する。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made to sufficiently open and disperse a fiber bundle and sufficiently impregnate a thermoplastic resin in a molten state between the fibers to obtain a long reinforcing fiber. An object of the present invention is to provide a method for efficiently producing fiber-reinforced resin pellets for a fiber-reinforced resin molded article having high mechanical strength and excellent heat resistance.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
請求項１記載の発明は、ダイヘッドの含浸部内に引き込
まれた１００〜５０００本の束であって断面積が０．１
〜１．０ｍｍ ２ の繊維束に対し、この繊維束の走行方向
と同じ方向にのみ流れるように溶融樹脂を供給し、前記
繊維束を、前記含浸部内の樹脂が流れる方向に沿った状
態で配置した複数の各ロッドに対して、隣接するロッド
の中心軸を結ぶ直線に対し少なくとも一側を２０度以上
傾斜させた状態でじぐざく状に巻き掛けて開繊させると
ともに、この開繊した１００〜５０００本の繊維の間
に 、 前記溶融樹脂をこれら繊維と同じ方向に流しながら
含浸させ、かつ 、 この溶融樹脂を含浸させた繊維束をダ
イから引き出して冷却し 、 その後切断してペレットを製
造する方法としてある。これにより、溶融樹脂の粘度の
影響を受けるダイ内部においても繊維束は開繊，分散
し、繊維間へ溶融樹脂が確実に含浸するので、この結
果、長い繊維を含んだ繊維強化樹脂ペレットを得ること
ができる。According to a first aspect of the present invention, there is provided a die head which is drawn into an impregnated portion of a die head.
100-5000 bundles with a cross-sectional area of 0.1
For a fiber bundle of ~ 1.0 mm 2 , the running direction of this fiber bundle
Supply molten resin so that it flows only in the same direction as
The fiber bundle is formed in a shape along the direction in which the resin in the impregnated portion flows.
Adjacent rods for each of the plurality of rods
20 degrees or more on at least one side of the straight line connecting the central axes of
When it is wrapped in a zigzag shape and opened
Both are between the opened 100-5000 fibers
In, while flowing the molten resin in the same direction as the fibers
Impregnated, and da the fiber bundle impregnated with the molten resin
Pull out from b to cool , then cut to produce pellets
There is a way to build. As a result, the fiber bundle is opened and dispersed even inside the die affected by the viscosity of the molten resin, and the molten resin is surely impregnated between the fibers. As a result, a fiber-reinforced resin pellet containing long fibers is obtained. be able to.
【００１０】[0010]
【本発明の実施の形態】以下、本発明の一実施形態を詳
細に説明する。まず、本発明の一実施形態にかかる方法
を実施するための装置例を、図面もとづいて説明する。
図１は、装置全体の平面図であり、１０はダイ、２０は
ダイ１０へ熱可塑性溶融樹脂を供給する押出機、３０は
繊維束Ｆのロール、４０はダイ１０に引き込まれる繊維
束Ｆに一定の張力を与えるテンションロール群、５０は
ダイ１０から引き出された溶融樹脂含浸繊維束を冷却す
るための冷却手段、６０は繊維束の引き出しロール、７
０は引き出された溶融樹脂含浸繊維束をカットして繊維
強化樹脂ペレットとするペレタイザである。本装置は、
三本のそれぞれ独立した繊維束Ｆに、溶融樹脂を同時に
含浸させる例を示している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail. First, an example of an apparatus for performing a method according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of the entire apparatus, in which 10 is a die, 20 is an extruder that supplies a thermoplastic molten resin to the die 10, 30 is a roll of the fiber bundle F, and 40 is a fiber bundle F drawn into the die 10. A tension roll group for applying a constant tension; 50, a cooling means for cooling the molten resin-impregnated fiber bundle drawn out of the die 10; 60, a fiber bundle drawing roll;
Reference numeral 0 denotes a pelletizer that cuts out the drawn-out molten resin-impregnated fiber bundle into a fiber-reinforced resin pellet. This device is
An example is shown in which three independent fiber bundles F are simultaneously impregnated with a molten resin.
【００１１】図２は、第１図のＩーＩ断面でありダイの
縦断面を示している。ダイ１０は予熱部１１と含浸部１
３からなっている。予熱部１１は繊維束Ｆへの溶融樹脂
含浸に先立って繊維束Ｆを予熱しておくための予熱領域
を形成しており、外周部には、ヒータ１２が設けてあ
る。この予熱部１１の長さは、繊維束Ｆと溶融樹脂の親
和性が良くなるように通過速度に応じて適宜決定する。
なお、ヒータ１２の加熱温度を調整することによって
も、繊維束の通過速度に適した予熱状態とできる。FIG. 2 is a sectional view taken along the line II of FIG. 1 and shows a longitudinal section of the die. Die 10 has preheating section 11 and impregnating section 1
It consists of three. The preheating section 11 forms a preheating region for preheating the fiber bundle F before impregnating the fiber bundle F with the molten resin, and a heater 12 is provided on the outer peripheral portion. The length of the preheating section 11 is appropriately determined according to the passing speed so that the affinity between the fiber bundle F and the molten resin is improved.
The preheating state suitable for the passing speed of the fiber bundle can be obtained by adjusting the heating temperature of the heater 12.
【００１２】含浸部１３は、繊維束Ｆに溶融した熱可塑
性樹脂を含浸させるための領域である。この含浸部１３
の入口側は予熱部１１の出口側と連結している。また、
含浸部１３の入口側は熱可塑性樹脂を溶融して押し出す
押出機２０の先端部と接続している。すなわち、含浸部
１３の入口側は一種のマニホールドを形成している。一
方、含浸部１３の出口側は錐状になっており、溶融樹脂
を含浸した繊維束Ｆを収束し所定の線径となるようにし
てある。なお、予熱部１１の出口と含浸部１３の入口の
関係は、必ずしも直線状である必要はなく、繊維束Ｆが
折れない状態であれば角度をもたせてもよい。The impregnating section 13 is an area for impregnating the fiber bundle F with a molten thermoplastic resin. This impregnated part 13
Is connected to the outlet side of the preheating unit 11. Also,
The inlet side of the impregnating section 13 is connected to the tip of an extruder 20 that melts and extrudes the thermoplastic resin. That is, the inlet side of the impregnation section 13 forms a kind of manifold. On the other hand, the outlet side of the impregnating section 13 has a conical shape so that the fiber bundle F impregnated with the molten resin converges to have a predetermined wire diameter. Note that the relationship between the outlet of the preheating unit 11 and the inlet of the impregnation unit 13 does not necessarily need to be linear, and may have an angle as long as the fiber bundle F is not broken.
【００１３】このダイ内部の含浸部１３には、繊維束Ｆ
を開繊しかつ分散させるためのロッド１４（１４ａ，
…，１４ｅ）が、繊維束Ｆの進行方向と交差した状態で
該進行方向に複数本に配置してある。繊維束Ｆは、これ
らロッド１４に、じぐざぐ状に巻き掛けてある。The impregnated portion 13 inside the die has a fiber bundle F
Rod 14 (14a, 14a,
, 14e) are arranged in a plurality in the traveling direction of the fiber bundle F in a state of intersecting with the traveling direction of the fiber bundle F. The fiber bundle F is wound around these rods 14 in a zigzag manner.
【００１４】このようにすると、繊維束Ｆに比較的大き
な張力がかかり、繊維束Ｆの開繊，分散を効率的に行な
うことができる。特に、繊維束Ｆの引き出しを高速で行
なう場合に効果的である。In this case, a relatively large tension is applied to the fiber bundle F, and the fiber bundle F can be efficiently opened and dispersed. This is particularly effective when the fiber bundle F is pulled out at a high speed.
【００１５】ロッド１４は、二本以上あればよいが、繊
維束Ｆの引き出しを高速で行なう場合には複数本（三本
以上）とすることが好ましい。また、ロッド１４の断面
形状は、円形，楕円形あるいは多角形状のものでもよ
く，その太さ（径）も繊維束Ｆの材質、量等種々の要素
を考慮して決定することができる。The number of the rods 14 may be two or more. However, when the fiber bundle F is pulled out at a high speed, it is preferable to use a plurality of rods (three or more). Further, the cross-sectional shape of the rod 14 may be circular, elliptical, or polygonal, and its thickness (diameter) can be determined in consideration of various factors such as the material and amount of the fiber bundle F.
【００１６】ロッド１４の配置は、繊維束Ｆの進行方向
に直線状に配置するほか、ロッド１４への繊維束Ｆの巻
掛けは隣接するロッドの中心軸間を結ぶ直線に対して少
なくとも一側を傾斜させた状態であればどのような態様
であってもよく、例えば千鳥状に配置したり、鉤形状に
配置したりしてもよい。これらロッド１４（１４ａ，
…，１４ｅ）を内蔵する含浸部１３の広さは、繊維束Ｆ
が隣接する繊維束と干渉せず、しかも十分開繊でき溶融
樹脂が確実に含浸する広さであればよい。The rod 14 is arranged linearly in the traveling direction of the fiber bundle F, and the fiber bundle F is wound around the rod 14 at least on one side with respect to a straight line connecting the center axes of adjacent rods. May be in any state as long as they are inclined. For example, they may be arranged in a zigzag or in a hook shape. These rods 14 (14a,
, 14e), the width of the impregnated portion 13 is
However, it is sufficient if it does not interfere with the adjacent fiber bundle, and can be sufficiently opened to sufficiently impregnate the molten resin.
【００１７】次に、上記装置を用いて行なう繊維強化樹
脂ペレットの製造方法の一実施形態を説明する。本方法
に使用される繊維束の種類としては、ガラス繊維，炭素
繊維，炭化珪素繊維などの無機繊維、金属繊維、有機繊
維などがある。また、繊維束の断面積は４×１０-3〜４
ｍｍ２、開繊性からすると０．１〜１ｍｍ２とすること
が好ましい。Next, an embodiment of a method for producing fiber-reinforced resin pellets using the above-described apparatus will be described. Types of fiber bundles used in the present method include inorganic fibers such as glass fibers, carbon fibers, and silicon carbide fibers, metal fibers, and organic fibers. The cross-sectional area of the fiber bundle is 4 × 10 -3 to 4
mm 2, it is preferable that the 0.1 to 1 mm 2 From openability.
【００１８】さらに、この繊維束を構成する個々の繊維
の直径は１〜１００μ、柔軟性からすると３〜５０μと
することが好ましく、これら繊維の束を構成する本数は
１０〜１００００本、開繊性からすると１００〜５００
０本とすることが好ましい。Further, the diameter of each fiber constituting the fiber bundle is preferably 1 to 100 μm, and from the viewpoint of flexibility, it is preferably 3 to 50 μm. 100-500
Preferably, the number is zero.
【００１９】このような繊維束Ｆは、引出しロール６０
に引き取られることにより、ロール３０からテンション
ロール群４０、ダイ１０、冷却手段５０を通過してペレ
タイザに供給される。Such a fiber bundle F is supplied to a drawing roll 60
Is supplied from the roll 30 to the pelletizer through the tension roll group 40, the die 10, and the cooling means 50.
【００２０】すなわち、繊維束Ｆは、テンションロール
群４０で一定の張力を与えられた状態でダイ１０の予熱
部１１に引き込まれ、ここでヒータ１２により予め加熱
される。That is, the fiber bundle F is drawn into the preheating section 11 of the die 10 while being given a constant tension by the tension roll group 40, and is heated by the heater 12 in advance.
【００２１】次いで、繊維束Ｆはダイ１０の含浸部１３
に引き込まれ、ロッド１４に所定の傾斜（角度）で巻き
掛けられ張力を与えられる。これにより、繊維束Ｆは開
繊と分散を行ない、繊維と繊維の間に溶融した熱可塑性
樹脂を浸み込ませる。具体的には、繊維束Ｆを、図３に
示すように隣接するロッド１４の中心軸Ｃを結ぶ直線Ｈ
に対し、少なくとも一側が所定の角度αだけ、例えば１
０度以上、好ましくは２０度以上傾斜した状態でロッド
１４に巻き掛けて張力を与える。そして、この状態で、
繊維束Ｆを、溶融樹脂中に走行させながら開繊，分散し
ながら、繊維間に溶融した熱可塑性樹脂を含浸させる。Next, the fiber bundle F is applied to the impregnated portion 13 of the die 10.
And is wound around the rod 14 at a predetermined inclination (angle) to give tension. As a result, the fiber bundle F is opened and dispersed, and the molten thermoplastic resin is impregnated between the fibers. Specifically, as shown in FIG. 3, a fiber bundle F is formed by a straight line H connecting the central axes C of adjacent rods 14.
On the other hand, at least one side has a predetermined angle α, for example, 1
The rod 14 is wound around the rod 14 at an angle of 0 ° or more, preferably 20 ° or more to apply tension. And in this state,
The fiber bundle F is impregnated with the melted thermoplastic resin between the fibers while being spread and dispersed while traveling through the molten resin.
【００２２】押出機２０において溶融され、含浸部１３
に供給される熱可塑性樹脂としては、ポリプロピレン，
ポリスチレン，ポリカーボネート，ポリプロピレンに酸
変性ポロプロピレンを配合したものなどを例示すること
ができるが、その種類は特に制限されず、成形材料の用
途等に応じ、種々のものを用いることができる。これら
の中でも、ポリプロピレンに酸変性ポリプロピレンを１
重量部程度配合したものが好ましく用いられる。また、
含浸部１３に供給される溶融熱可塑性樹脂の温度と圧力
は、樹脂が繊維束中に十分含浸でき、しかも樹脂の劣化
と漏洩を生じない範囲とする。In the extruder 20, the molten material is
The thermoplastic resin supplied to
Polystyrene, poly car Boneto, but the acid-modified polypropylene to the polypropylene and the like can be exemplified those obtained by blending, the type is not particularly limited, depending on the application of the molding material, it is possible to use various ones. Among these, acid-modified polypropylene is one of the polypropylenes.
Those mixed in about parts by weight are preferably used. Also,
The temperature and pressure of the molten thermoplastic resin supplied to the impregnating section 13 are set so that the resin can sufficiently impregnate the fiber bundle, and the resin does not deteriorate and leak.
【００２３】開繊，分散し溶融樹脂を繊維束中に十分含
浸した繊維束Ｆは、ダイ１０の出口において再び収束さ
れダイ１０の外に引き出される。引き出された繊維束Ｆ
は、冷却手段５０で冷却された後ペレタイザ７０に送ら
れ、このペレタイザ７０において細かく切断され繊維強
化樹脂ペレットとされる。The fiber bundle F which has been opened and dispersed and sufficiently impregnated with the molten resin in the fiber bundle is converged again at the exit of the die 10 and drawn out of the die 10. The drawn fiber bundle F
Is sent to the pelletizer 70 after being cooled by the cooling means 50, it is finely cut fiber-reinforced resin pellets in the pelletizer 70.
【００２４】[0024]
【実施例】実施例１ ・ダイス：５０ｍφ押出機の先端に取り付け、 含浸部に
四本のロッドを直線状に配置。 ・繊維束：アミノシランで表面処理された繊維径１３μ
のガラス繊維を１７０本束ねたガラスロービング。 ・予熱温度：２００℃ ・熱可塑性樹脂：ポリプロピレンと酸変性ポリプロピレ
ン（１重量部）をブレンドして溶融。 ・溶融温度：２４０℃ ・ロッド：四本６ｍｍ（直径）×３ｍｍ（長さ） ・傾斜角度：２５度 上記条件下において、テンションロール群で繊維束の量
を調整しつつダイ内に送り込み含浸を行ない、その後ダ
イから引き出して冷却し、ペレタイザで長さ１５ｍｍの
ペレットを得た。【Example】Example 1 ・ Die: Attach to the tip of 50mφ extruder, and to the impregnation part
Four rods are arranged in a straight line.・ Fiber bundle: Fiber diameter 13μ surface-treated with aminosilane
Glass roving with 170 glass fibers bundled.・ Preheating temperature: 200 ℃ ・ Thermoplastic resin: polypropylene and acid-modified polypropylene
(1 part by weight) and melt. -Melting temperature: 240 ° C-Rods: 4 6mm (diameter) x 3mm (length)-Inclination angle: 25 degrees Under the above conditions, the amount of fiber bundle in the tension roll group
To the die while adjusting the
Pull out from b and cool, and use a pelletizer to
A pellet was obtained.
【００２５】実施例２ 熱可塑性樹脂をスチレン−無水マレイン酸共重合体とし
た以外は、実施例１と同様にしてペレットを得た。[0025]Example 2 The thermoplastic resin is a styrene-maleic anhydride copolymer.
Other than the above, pellets were obtained in the same manner as in Example 1.
【００２６】実施例３ 熱可塑性樹脂をポリカーボネートとし、溶融温度を３０
０℃とした以外は、実施例１と同様にしてペレットを得
た。 Example 3 The thermoplastic resin was polycarbonate and the melting temperature was 30
Pellets were obtained in the same manner as in Example 1 except that the temperature was changed to 0 ° C.
【００２７】実施例４ ダイの含浸部におけるロッドの配置を、第４図に示すよ
うにした以外は、実施例１と同様にしてペレットを得
た。[0027]Example 4 The arrangement of the rods in the impregnation part of the die is shown in FIG.
A pellet was obtained in the same manner as in Example 1, except that
Was.
【００２８】実施例５ 熱可塑性樹脂をスチレン−無水マレイン酸共重合体とし
た以外は、実施例４と同様にしてペレットを得た。[0028]Example 5 The thermoplastic resin is a styrene-maleic anhydride copolymer.
Other than the above, a pellet was obtained in the same manner as in Example 4.
【００２９】実施例６ 熱可塑性樹脂をポリカーボネートとした以外は、実施例
４と同様にしてペレットを得た。[0029]Example 6 Example except that the thermoplastic resin was polycarbonate.
Pellets were obtained in the same manner as in Example 4.
【００３０】比較例１ 二軸混練機（ＴＥＭ−３５）を用い、ポリプロピレンと
酸変性ポリプロピレンをブレンドした後定量供給機に
て、ホッパー口へ定量供給した。また、アミノシラン処
理されたガラス繊維（チョップドストランド）を定量供
給機で、樹脂が溶融した後のサイドフィード口へ供給
し、混練を実施し、ペレットを得た。[0030]Comparative Example 1 Using a twin screw kneader (TEM-35),
Acid-modified polypropyleneblendAfter feeding
To the hopper opening. In addition, aminosilane treatment
Glass fiber (Chopped strand)
Supply to the side feed port after the resin is melted by the feeder
Then, kneading was performed to obtain pellets.
【００３１】比較例２ 樹脂として、スチレン−マレイン酸共重合体を用いた以
外は、比較例１と同じ条件でペレットを得た。[0031]Comparative Example 2 Since the styrene-maleic acid copolymer was used as the resin,
Outside, pellets were obtained under the same conditions as Comparative Example 1.
【００３２】比較例３ 樹脂として、ポリカーボネートを用いた以外は、比較例
１と同じ条件でペレットを得た。[0032]Comparative Example 3 Comparative example except that polycarbonate was used as the resin
Pellets were obtained under the same conditions as in Example 1.
【００３３】比較例４ ロッドを除いたダイを用いた以外は、実施例１と同様に
してペレットを得た。[0033]Comparative Example 4 Except for using the die excluding the rod, the same as in Example 1
Thus, a pellet was obtained.
【００３４】比較例５ ダイの含浸部におけるロッドの配置を第５図に示すよう
にした以外は、実施例１と同様にしてペレットを得た。
実施例１〜６、比較例１〜５で得られたペレットを用
い、射出成形機（東芝ＩＳ−９０Ｂ）にて、テストピー
スを作成し、その物性を評価した。結果を第１表に示
す。[0034]Comparative Example 5 The arrangement of the rods in the impregnated part of the die is shown in FIG.
A pellet was obtained in the same manner as in Example 1, except that
Using pellets obtained in Examples 1 to 6 and Comparative Examples 1 to 5
Test pea using an injection molding machine (Toshiba IS-90B)
A sample was prepared and its physical properties were evaluated. The results are shown in Table 1.
You.
【００３５】[0035]
【表１】 [Table 1]
【００３６】実施例１、実施例４及び比較例４、比較例
５において、繊維束（ガラスロービング）の引抜き速度
（生産量）を変えて、ロービングの開繊度（樹脂の含浸
度）及び得られたペレットでの射出成形品中の繊維の分
散状況を比較した。ポリプロ（４０ｗｔ％）／ガラスロ
ービング（６０ｗｔ％）で実施した。この結果を第２表
に示す。In Example 1, Example 4, Comparative Example 4, and Comparative Example 5, the opening degree of the roving (the degree of resin impregnation) and the obtained degree were obtained by changing the drawing speed (production amount) of the fiber bundle (glass roving). The state of dispersion of the fibers in the injection-molded article with the pellets was compared. The test was carried out with polypropylene (40 wt%) / glass roving (60 wt%). Table 2 shows the results.
【００３７】[0037]
【表２】 [Table 2]
【００３８】実施例７ ガラス繊維束の代わりに、 繊維径８μのステンレス繊維
９５０本の繊維束を用いた以外は、実施例１と同様にし
てペレットを得た。 Example 7 Pellets were obtained in the same manner as in Example 1 except that a fiber bundle of 950 stainless steel fibers having a fiber diameter of 8 µm was used instead of the glass fiber bundle.
【００３９】比較例６ ガラス繊維束の代わりに、繊維径８μのステンレス繊維
束を用いた以外は、比較例４と同様にしてペレットを得
た。[0039]Comparative Example 6 8μ stainless steel fiber instead of glass fiber bundle
A pellet was obtained in the same manner as in Comparative Example 4 except that a bundle was used.
Was.
【００４０】比較例７ ガラス繊維束の代わりに、繊維径８μのステンレス繊維
束を用いた以外は、比較例５と同様にしてペレットを得
た。[0040]Comparative Example 7 8μ stainless steel fiber instead of glass fiber bundle
A pellet was obtained in the same manner as in Comparative Example 5 except that a bundle was used.
Was.
【００４１】比較例８ ガラスのチョップドストランドの代わりに、繊維径８
μ，長さ６ｍｍのステンレス繊維のカット品を用いた以
外は、比較例１と同様にしてペレットを得た。それぞれ
得られたペレットを用い射出成形により、１４０ｍｍ×
１４０ｍｍ×３ｍｍの角板を成形し、その外観をチェッ
クするとともに、その角板を用いて、体積固有抵抗値を
測定した。その結果を第３表及び第６図のグラフに示
す。[0041]Comparative Example 8 GlassChopped strandInstead of fiber diameter 8
μ, 6 mm long stainless steel fiber
Except for the above, pellets were obtained in the same manner as in Comparative Example 1. Respectively
140 mm × by injection molding using the obtained pellets
Form a 140 mm x 3 mm square plate and check its appearance.
And use the square plate to determine the volume resistivity.
It was measured. The results are shown in Table 3 and the graph of FIG.
You.
【００４２】[0042]
【表３】 [Table 3]
【００４３】[0043]
【発明の効果】本発明の繊維強化樹脂ペレットの製造方
法によれば、繊維束中に熱可塑性溶融樹脂を十分含浸さ
せることができ、長い強化繊維を含み機械的強度が高く
耐熱性に優れた繊維強化樹脂成形品用の繊維強化樹脂ペ
レットを生産性よく得ることができる。According to the method for producing fiber-reinforced resin pellets of the present invention, the fiber bundle can be sufficiently impregnated with the thermoplastic molten resin, contains long reinforcing fibers, has high mechanical strength, and has excellent heat resistance. Fiber reinforced resin pellets for a fiber reinforced resin molded product can be obtained with high productivity.
【図１】本発明方法の一実施形態の実施に用いる装置例
の全体図。FIG. 1 is an overall view of an example of an apparatus used to carry out an embodiment of the method of the present invention.
【図２】図１のＩ−Ｉ線拡大断面であり、繊維束の巻き
掛け状態を示す図。FIG. 2 is an enlarged cross section taken along line II of FIG. 1 and shows a state in which a fiber bundle is wound.
【図３】繊維束をロッドに巻き掛けたときの詳細説明
図。FIG. 3 is a detailed explanatory view when a fiber bundle is wound around a rod.
【図４】繊維束の他の巻き掛け状態を示す図。FIG. 4 is a diagram showing another wound state of the fiber bundle.
【図５】従来例を示す図。FIG. 5 is a diagram showing a conventional example.
【図６】強化繊維の含有量と体積固有抵抗値との関係を
示す図である。FIG. 6 is a diagram showing the relationship between the content of reinforcing fibers and the volume resistivity.
１０ ダイ ２０ 押出機 １１ 予熱部 １２ ヒータ １３ 含浸部 １４ ロッド DESCRIPTION OF SYMBOLS 10 Die 20 Extruder 11 Preheating part 12 Heater 13 Impregnation part 14 Rod
───────────────────────────────────────────────────── フロントページの続き (72)発明者 二川 稔 神奈川県相模原市宮下１丁目２番27号 旭硝子マテックス株式会社内 (56)参考文献 特開 平３−183531（ＪＰ，Ａ) 特開 平１−263005（ＪＰ，Ａ) 米国特許3993726（ＵＳ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29B 9/00 - 9/16 B29C 70/00 - 70/88 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Minoru Futagawa 1-2-27 Miyashita, Sagamihara-shi, Kanagawa Prefecture Asahi Glass Matex Co., Ltd. (56) References JP-A-3-183353 (JP, A) JP-A-1 -263005 (JP, A) US Patent 3,993,726 (US, A) (58) Fields investigated (Int. Cl. 7 , DB name) B29B 9/00-9/16 B29C 70/00-70/88
Claims (1)
００〜５０００本の束であって断面積が０．１〜１．０
ｍｍ ２ の繊維束に対し、この繊維束の走行方向と同じ方
向にのみ流れるように溶融樹脂を供給し、 前記繊維束を、前記含浸部内の樹脂が流れる方向に沿っ
た状態で配置した複数の各ロッドに対して、隣接するロ
ッドの中心軸を結ぶ直線に対し少なくとも一側を２０度
以上傾斜させた状態でじぐざく状に巻き掛けて開繊させ
るとともに、この開繊した１００〜５０００本の繊維の
間に 、 前記溶融樹脂をこれら繊維と同じ方向に流しなが
ら含浸させ、 かつ 、 この溶融樹脂を含浸させた繊維束をダイから引き
出して冷却し 、 その後切断してペレットを製造する こと
を特徴とした繊維強化樹脂成形材料の製造方法。1. A method according to claim 1, wherein said step of pulling said die into said impregnated part of said die head.
A bundle of 00 to 5000 pieces with a cross-sectional area of 0.1 to 1.0
mm 2 in the same direction as the running direction of the fiber bundle.
The molten resin is supplied so as to flow only in the direction of
For each of the multiple rods
20 degrees at least on one side of the straight line connecting the center axes of the pads
Wrap it in a zigzag shape while tilting it to open it
Of the 100 to 5,000 fibers
During, the molten resin is a flow in the same direction as the fibers
Is al impregnated, and drawing a fiber bundle impregnated with the molten resin from a die
A method for producing a fiber-reinforced resin molding material, comprising taking out, cooling, and then cutting to produce pellets .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12128698A JP3234877B2 (en) | 1998-04-30 | 1998-04-30 | Method for producing fiber reinforced resin pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12128698A JP3234877B2 (en) | 1998-04-30 | 1998-04-30 | Method for producing fiber reinforced resin pellets |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1322694A Division JP2829323B2 (en) | 1989-12-14 | 1989-12-14 | Equipment for manufacturing fiber-reinforced resin molding materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10264152A JPH10264152A (en) | 1998-10-06 |
| JP3234877B2 true JP3234877B2 (en) | 2001-12-04 |
Family
ID=14807508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12128698A Expired - Fee Related JP3234877B2 (en) | 1998-04-30 | 1998-04-30 | Method for producing fiber reinforced resin pellets |
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| Country | Link |
|---|---|
| JP (1) | JP3234877B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7236693B2 (en) | 2005-03-22 | 2007-06-26 | Globaltec Fireplaces, Inc. | Flame simulator for use in an electric heater |
| JP2010094896A (en) * | 2008-10-16 | 2010-04-30 | Nitto Boseki Co Ltd | Method for manufacturing long-fiber-reinforced resin pellet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005126601A (en) * | 2003-10-24 | 2005-05-19 | Idemitsu Kosan Co Ltd | Fiber-reinforced resin composition and its molded item |
| JP4727960B2 (en) * | 2004-09-06 | 2011-07-20 | 株式会社プライムポリマー | Method for producing fiber reinforced resin composition |
| WO2009116608A1 (en) | 2008-03-21 | 2009-09-24 | 株式会社プライムポリマー | Long-fiber-reinforced resin composition and molded article thereof |
| EP2345689B1 (en) | 2008-09-30 | 2017-04-12 | Mitsui Chemicals, Inc. | Fiber-reinforced resin composition and molded object thereof |
| BRPI1016057A2 (en) | 2009-05-29 | 2019-09-24 | Prime Polymer Co Ltd | "long fiber-reinforced resin composition and molded object" |
| JP6246288B2 (en) * | 2016-09-02 | 2017-12-13 | ティコナ・エルエルシー | Die impregnation section and method for impregnating fiber roving |
| JP6937594B2 (en) | 2017-03-23 | 2021-09-22 | 日鉄ケミカル＆マテリアル株式会社 | Adhesion imparting agent for carbon fiber reinforced resin composition |
| JP7226346B2 (en) * | 2020-01-09 | 2023-02-21 | トヨタ自動車株式会社 | High-pressure tank manufacturing method and its manufacturing apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3993726A (en) | 1974-01-16 | 1976-11-23 | Hercules Incorporated | Methods of making continuous length reinforced plastic articles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263005A (en) * | 1988-04-14 | 1989-10-19 | Kobe Steel Ltd | Manufacturing device for frtp continuous prepreg |
| JP2829323B2 (en) * | 1989-12-14 | 1998-11-25 | 出光石油化学株式会社 | Equipment for manufacturing fiber-reinforced resin molding materials |
-
1998
- 1998-04-30 JP JP12128698A patent/JP3234877B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3993726A (en) | 1974-01-16 | 1976-11-23 | Hercules Incorporated | Methods of making continuous length reinforced plastic articles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7236693B2 (en) | 2005-03-22 | 2007-06-26 | Globaltec Fireplaces, Inc. | Flame simulator for use in an electric heater |
| JP2010094896A (en) * | 2008-10-16 | 2010-04-30 | Nitto Boseki Co Ltd | Method for manufacturing long-fiber-reinforced resin pellet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10264152A (en) | 1998-10-06 |
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