JPH03183531A - Method and device for producing frp molding stock - Google Patents
Method and device for producing frp molding stockInfo
- Publication number
- JPH03183531A JPH03183531A JP1322694A JP32269489A JPH03183531A JP H03183531 A JPH03183531 A JP H03183531A JP 1322694 A JP1322694 A JP 1322694A JP 32269489 A JP32269489 A JP 32269489A JP H03183531 A JPH03183531 A JP H03183531A
- Authority
- JP
- Japan
- Prior art keywords
- fiber bundle
- fiber
- rod
- molten resin
- molding material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000465 moulding Methods 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 90
- 229920005989 resin Polymers 0.000 claims abstract description 54
- 239000011347 resin Substances 0.000 claims abstract description 54
- 239000012778 molding material Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 229920005992 thermoplastic resin Polymers 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims 1
- 238000005470 impregnation Methods 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 229940060587 alpha e Drugs 0.000 abstract 1
- 239000008188 pellet Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 15
- 239000006185 dispersion Substances 0.000 description 6
- 239000012783 reinforcing fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000088 plastic resin Substances 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 2
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- DTCCVIYSGXONHU-CJHDCQNGSA-N (z)-2-(2-phenylethenyl)but-2-enedioic acid Chemical compound OC(=O)\C=C(C(O)=O)\C=CC1=CC=CC=C1 DTCCVIYSGXONHU-CJHDCQNGSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、機械的強度、耐熱性等に優れたｔａ、＊強化
樹脂成形材料の製造方法及びその装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method and apparatus for producing a TA* reinforced resin molding material having excellent mechanical strength, heat resistance, etc.
［従来の技術］
各種の＃ａ維強化欄脂は、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
。[Prior Art] Various types of #a fiber-reinforced ballasts have recently come to be used in various fields including automobiles, home appliances, and the like.
−・方、従来のＭ＆維強化樹脂からなる成形材料は、ス
タンバフルシートを除き、押出機内において強化繊維を
樹脂Φに混練し、万遍なく分散させたして押し１ｆ１シ
、その後、ベレット化するなどして製品化していた。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１強化ｍ維はなる
べく短く切断して用いる心安かあった。このため、＋ｌ
ｈげ、衝撃等に対する強度か十分てなく、強化ｍ維の利
点を１・分活しきれないという問題かあった。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。-・For conventional molding materials made of M&fiber-reinforced resin, except for standby full sheets, reinforcing fibers are kneaded with resin Φ in an extruder, dispersed evenly, pressed 1f1, and then made into pellets. It was commercialized by doing so. At this time, considering the fluidity of the resin during kneading, transfer, and extrusion in the extruder, it was safe to cut the 1-reinforced m fibers as short as possible. For this reason, +l
There was a problem in that it did not have sufficient strength against breakage, impact, etc., and was unable to take full advantage of the advantages of reinforced m-fibers. Further, there was a problem in that the mixing of reinforcing fibers caused severe wear on the extruder screws and the like.
そこて、このような問題を解決するため、混練ｆ程及び
押出工程を介することなく繊維強化熱０丁塑性樹脂を生
産する方法か注［Ｉされ、次の■〜■のような方法が提
案されている。Therefore, in order to solve this problem, we proposed a method to produce fiber-reinforced thermoplastic resin without going through the kneading process and the extrusion process. has been done.
■あらかじめ、繊維束Ｃ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−：１９８５ ｑなど）
。■Method of attaching fiber bundle C resin powder in advance and then heating and melting it (Japanese Patent Publication No. 52-: 1985 q, etc.)
.
■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５２−１０１４０号、同６
４−７８４８号など）。■Method of pulling the roving into the die, impregnating it with molten resin, and then pulling it out (Special Publication No. 52-10140, No. 6
4-7848 etc.).
■タイ内部てｍ＃ｉ東に溶融樹脂を含浸させる課、ｍ＃
Ｉ束の側面を押圧しながら含没する方法（０開ｖ１−１
７８４１１号）。■The section that impregnates m#i east with molten resin in Thailand, m#
Method of impregnating while pressing the side of I bundle (0 open v1-1
No. 78411).
■ｍ維東を複数の供給「１からダイ内部に供給し、溶融
樹脂を含浸させる方法（ＩＩＳＰ Ｒｅ、：１２７７２
号）。■Method of supplying multiple pieces of ITO into the die from 1 and impregnating it with molten resin (IISP Re,: 12772
issue).
［発明か解決しようとする課題］
しかしながら、−Ｌ述した■へ一■の方法には次のよう
な解決すべき課題かある。[Problems to be Solved by the Invention] However, the methods of (1) and (1) described above have the following problems to be solved.
すなわち、（０の方法は、製造工程か非常に大間りとな
って、製造コストか大幅に高くなるため実用化すること
か困難てあった。That is, method (0) requires a very long manufacturing process and significantly increases the manufacturing cost, making it difficult to put it into practical use.
■の方法は、熱可塑性樹脂の溶融粘度か高いため、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１分散か十分行なわれないという問題かあった
。In method (2), since the thermoplastic resin has a high melt viscosity, the resin cannot be impregnated into the fiber bundle as well as in the case of a thermosetting resin, and the fibers cannot be opened or dispersed sufficiently.
■の方法は、繊維束の側面を中にロッド等に押し付ける
だけなので、繊維束にかかるテンションか不十分であっ
た。このため、開繊１分散がｔ・分°Ｃなく、特に引き
出し速度を高めたときにこの現魚かＷＪ筈であり、生産
性の向上の観点からすると問題かあった。In method (2), the side surface of the fiber bundle is simply pressed against a rod or the like, so the tension applied to the fiber bundle is insufficient. For this reason, the fiber opening dispersion was less than t.min.°C, and especially when the drawing speed was increased, it was supposed to be WJ, which was a problem from the viewpoint of improving productivity.
（４）の方法は、繊維束の供給口か異なるため、供給位
置により溶融樹脂の含浸程度か異なり、製品の品質にば
らつきを生じるという問題かあった。In the method (4), since the supply ports of the fiber bundles are different, the degree of impregnation with the molten resin varies depending on the supply position, resulting in a problem that the quality of the product varies.
未発明の繊鍵強化ＩＩＭ詣慮形材料の製造方法は、Ｌ記
課題にかんがみてなされたもので、繊維の開繊。分散を
十分行ないながら溶融状態の熱可塑性樹脂を含没さゼる
ことにより１機械的強度が高く耐熱性に優れた繊維強化
樹脂成形材料の製造を可能ならしめることをＩＩ的とし
ている。The uninvented method for producing fiber-reinforced IIM material was developed in view of the problem described in L, and involves opening fibers. The second objective is to make it possible to produce a fiber-reinforced resin molding material with high mechanical strength and excellent heat resistance by impregnating a thermoplastic resin in a molten state with sufficient dispersion.
また、未発ＩＪｉの繊維強化樹脂成形材料の製造装置は
、上記方法を確実に実施できるようにすることを目的と
している。Furthermore, the purpose of the apparatus for producing the undeveloped IJi fiber-reinforced resin molding material is to enable the above method to be carried out reliably.
［課題を解決するための手段］
Ｌ記目的を達成するため、本発明の繊維強化樹脂成形材
料の製造方法は、溶融した熱可塑性樹脂中に＃ｌ雑東を
連続的に通過させ、繊維束に溶融樹脂を含浸させた後、
ダイスより引き出し、樹脂を硬化させることによって繊
維強化樹脂成形材料を製造する方法において、前記繊維
束に溶融樹脂を含浸させるぬに、ｍ維東を、ロッドの中
心を通る１α線に対し少なくとも一側か所定の角度だけ
傾斜した状態てロッドに巻き掛けるようにしている。[Means for Solving the Problems] In order to achieve the object L, the method for producing a fiber-reinforced resin molding material of the present invention involves continuously passing a #l mist through a molten thermoplastic resin to form a fiber bundle. After impregnating with molten resin,
In a method for producing a fiber-reinforced resin molding material by drawing it out from a die and curing the resin, the fiber bundle is impregnated with a molten resin, and the fiber bundle is heated at least on one side with respect to the 1α ray passing through the center of the rod. It is tilted at a predetermined angle and then wrapped around the rod.
そして、好ましくは繊維束を、ロッドの中心を通る直線
に対しルなくとも一側かｌｏｆ＋！’以トの傾斜角をイ
■した状態てロッドに巻き掛けるようにしている。また
、必要に応じて繊維束か波形を形成するよう、該繊維束
を複数のロッドに接触させるようにしている。Preferably, the fiber bundle is attached to at least one side of the straight line passing through the center of the rod. It is made to wrap around the rod with the angle of inclination set at 1. Further, the fiber bundle is brought into contact with a plurality of rods so as to form a waveform in the fiber bundle as required.
また、本発明の繊維強化樹脂酸形材料の製込装置は、繊
維束か通過するダイと、このタイ内部に熱り塑性溶融樹
脂を供給する溶融樹脂供給部と、前記ダイ内部に設けら
れ、繊維束を、ロッドの中心を通る１’（線に対し少な
くとも一側か所定の角度だけ傾斜した状態てロッドに巻
き掛けるロッドと、溶融樹脂を含浸した繊維束をダイよ
り引き出ず引出し手段とを備えた構成としである。そし
て、必要に応しロッドを、繊維束の引出し方向に］ｔ］
縁線状配置した構成としである。Further, the manufacturing device for a fiber-reinforced resin acid type material of the present invention includes a die through which the fiber bundle passes, a molten resin supply section that supplies thermoplastic molten resin into the inside of the tie, and a molten resin supply section provided inside the die, A rod for winding the fiber bundle around the rod with at least one side inclined at a predetermined angle relative to the line passing through the center of the rod, and a means for pulling out the fiber bundle impregnated with molten resin from the die. If necessary, the rod is moved in the drawing direction of the fiber bundle]
It has a configuration in which the edges are arranged in a linear manner.
以−ド、本ｆｆｉ １１の装置例を図面にもとづいて詳
細に説明する。Hereinafter, an example of the present FFI 11 device will be explained in detail based on the drawings.
第１図は、装置全体の平面ＩＡであり、ｌＯはダイ、２
０はタイ１０へ熱可塑性溶融樹脂を供給する押出機、３
０はｍｆａ東Ｆのロール、４０はダイ１０に引き込まれ
る繊維束Ｆに一定の張力をゲえるデンジコンロール郡、
５０はタイ１０から引き出された溶融樹脂含浸繊維束の
冷却手段、６０はｍ、ＩＩ東の引き出しロール、７０は
引き出された繊維束をカットするベレタイザである。Figure 1 shows the plane IA of the entire device, lO is the die, 2
0 is an extruder that supplies molten thermoplastic resin to tie 10; 3
0 is a roll of mfa East F, 40 is a Denji control roll group that can exert a constant tension on the fiber bundle F drawn into the die 10,
50 is a cooling means for the molten resin-impregnated fiber bundle pulled out from the tie 10, 60 is a pull-out roll m, II east, and 70 is a beletizer for cutting the pulled-out fiber bundle.
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。This apparatus shows an example in which three independent fiber bundles F are simultaneously impregnated with molten resin.
第２図は、第１図のＩ−１断面でありダイの縦断面を示
している。ダイｌＯは予熱部１１と含浸部１３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叡
って繊維束Ｆを予熱しておくためのｆ・熱領域を形成し
ており、外周部には。FIG. 2 is a cross section taken along line I-1 in FIG. 1 and shows a vertical cross section of the die. The die IO consists of a preheating section 11 and an impregnating section 13. The preheating section 11 forms a heat region f for preheating the fiber bundle F prior to impregnation of the fiber bundle F with molten resin, and has a heat area at the outer periphery.
ヒータ１２が設けである。この子・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ｉ２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
熱状態とてきる。A heater 12 is provided. The length of this child/heat section 11 is
It is appropriately determined according to the passing speed so that the affinity between the fiber bundle F and the molten resin is improved. Note that a preheating state suitable for the passing speed of the fiber bundle can also be achieved by adjusting the heating temperature of the heater i2.
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
人口側は熱可塑性樹脂を溶融して押し出す押出機２０と
接続している。The impregnating section 13 is a region for impregnating the fiber bundle F with a molten thermoplastic resin. The inlet side of this impregnating section 13 is connected to the outlet side of the preheating section 11. Further, the artificial side of the impregnation section 13 is connected to an extruder 20 that melts and extrudes the thermoplastic resin.
すなわち、含浸ｉ！ｆＩｌ１３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１１０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である。That is, impregnation i! The inlet side of fIl13 forms a kind of manifold. On the other hand, the 110 side of the impregnated part 13 has a conical shape, and is designed to converge the fiber bundle F impregnated with the molten resin to have a predetermined wire diameter.
なお、ｆ熱部１ｉ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か折れない
状態であれば角度をもたせてもよい。The relationship between the outlet of the f heating section 1i and the inlet of the impregnating section 13 is as follows:
It does not necessarily have to be straight, and may have an angle as long as the fiber bundle F does not break.
この含浸部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）かｔａ維
東Ｆの進行方向に複数本直線状に配置しである。繊維束
Ｆは、このロッド１４に、しぐざぐ状に巻き掛けである
。詳述すれば、繊維束Ｆは、第３図に示すようにロッド
１４の中心を通る直線に対し少なくとも一側が所定の角
度αだけ、例えば１０度以に、好ましくは２０度以上傾
弧しｒ−ｉ＊ ｍてロッド１４に巻き掛けである。In this impregnating section 13, a plurality of rods 14 (14a, . . . 14e) for opening and dispersing the fiber bundles F are arranged linearly in the traveling direction of the fiber bundle F. The fiber bundle F is wound around this rod 14 in a staggered manner. Specifically, as shown in FIG. 3, at least one side of the fiber bundle F is inclined by a predetermined angle α, for example, 10 degrees or more, preferably 20 degrees or more, with respect to a straight line passing through the center of the rod 14. -i*m is wound around the rod 14.
このようにすると、繊維束Ｆに比較的大きな張力かかか
り、繊維束Ｆの開繊９分散を効率的に行なうことかでき
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 way, a relatively large tension is applied to the fiber bundle F, and the fiber bundle F can be opened and dispersed efficiently. This is particularly effective when pulling out the fiber bundle F at high speed.
ロッド１４は、−本以上あればよいか、繊維束Ｆの引き
出しを高速で行なう場合には複数本（三木以Ｉ：、）と
することか好ましい。The number of rods 14 may be - or more, or preferably, if the fiber bundle F is drawn out at high speed, it is preferably a plurality of rods (Miki I).
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
。Further, the cross-sectional shape of the rod 14 may be circular, elliptical, or polygonal, and its thickness (diameter) can also be determined in consideration of various factors such as the material and quantity of the fiber bundle F.
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の巻掛は角度が所
定角度以しどなるの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。The rod 14 may be arranged in a straight line in the traveling direction of the fiber bundle F, and the fiber bundle F may be wound around the rod 14 in any manner as long as the angle changes within a predetermined angle. For example, they may be arranged in a staggered manner or in a hook shape.
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か確実に含浸す
る広さであればよい。The width of the impregnating section 13 containing these rods 14 (14a, -, 14e) must be such that the fiber bundle F does not interfere with adjacent fiber bundles, and is wide enough to allow sufficient fiber opening and to ensure that the molten resin is impregnated. Bye.
次に、上述の実施例装置な用いて行なうｗＡｍ強化樹脂
成形材料の製造方法について説明する。Next, a method for manufacturing a wAm reinforced resin molding material using the above-described apparatus will be described.
本方法に使用されるｍ！１束の種類としては、ガラス繊
維、炭素繊維１次化硅素繊維などの無ａ繊維、金属繊維
、イｉａｍ雄などがある。また、繊維束の断面積は４Ｘ
１０−３〜４ｒｓ”、開繊性からすると０．１〜Ｉｍ
ｍ”とすることか好ましい。m! used in this method! Types of one bundle include glass fiber, carbon fiber, non-aluminum fiber such as primary silicon fiber, metal fiber, and aluminum fiber. Also, the cross-sectional area of the fiber bundle is 4X
10-3~4rs'', 0.1~Im in terms of opening properties
It is preferable to set it to "m".
さらに、この繊維束を４ＩＩ＆する個々の繊維の１μ径
は ｌ〜１００μ、柔軟性からすると ３〜５０ＩＬと
することか好ましく、これら繊維の東を構成する本数は
１０〜１００００本、開繊性からすると １００〜５０
００本とすることが好ましい。Further, the diameter of each individual fiber that makes up this fiber bundle is 1 to 100 μ, preferably 3 to 50 IL from the viewpoint of flexibility, and the number of these fibers forming the east is 10 to 10,000, from the viewpoint of opening property. Then 100-50
It is preferable to set it as 00 pieces.
このような＃Ｉ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Ｊ：１０−ルｆ
ｊ４０、ダイｔＯ，ａ却ｆ段５０を通過してベレタイザ
に供給される。Such #I fiber bundle F is taken up by the pull-out roll 60, and is transferred from the roll 30 to the tensile strength J:10-le f.
It passes through stages 50, 50, and 40, and is supplied to the beletizer.
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ｔｉに引き
込まれ、ここでヒータ１２により予め加熱される。次い
で、ａｍ東Ｆはダイ１０の含浸部１３に引き込まれ、ロ
ッド１４に所定の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１１１１に溶融した熱ｊ＋７塑性樹脂を浸み込ま
せる。That is, the fiber bundle F is drawn into the preheating section ti of the die 10 while being given a constant tension by the tension roll group 40, and is preheated by the heater 12 here. Next, the am east F is drawn into the impregnation part 13 of the die 10, and is wound around the rod 14 at a predetermined angle to be given tension. As a result, the fiber bundle F is opened and dispersed, and the molten thermal j+7 plastic resin is infiltrated into the fibers 1111.
押出＠２０において溶融され、含浸部１３に供給される
熱可塑性樹脂の種類は、特に制限されず、Ｊ＆形材料の
用途１に応ｌン、種々のものを用いることかできる。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ｔ−分含浸てき、しかも樹脂
の劣化と漏洩を生しない範聞とする。The type of thermoplastic resin melted in the extrusion @ 20 and supplied to the impregnation section 13 is not particularly limited, and various types can be used depending on the application 1 of the J& shape material. Further, the temperature and pressure of the molten thermoplastic resin supplied to the impregnating section 13 are set within a range that allows the resin to be impregnated into the fiber bundle for t minutes and does not cause deterioration or leakage of the resin.
開繊１分散し溶融樹脂を束中に十分含浸した繊維束Ｆは
、ダイｌＯの出口において再び収束されタイ１０の外に
引き出される。引き出されたＭＩＩｍ東Ｆは、冷却手段
５０で冷却された後ベレタイザ６０に送られ、このベレ
タイザ６０において細かく切断されベレット化される。The fiber bundle F, which has been spread and dispersed and sufficiently impregnated with the molten resin, is converged again at the exit of the die IO and drawn out of the tie 10. The extracted MIIm East F is cooled by the cooling means 50 and then sent to the beletizer 60, where it is cut into pieces and made into pellets.
［実施例と比較例］ χ纂亘ユ スローヒ′ング。[Example and comparative example] χ纂亘ゆ Slohing.
・ｒ−熱温度：２００℃ トして溶融。・r-heat temperature: 200℃ and melt.
・溶融温度：２４０℃
・ロッド：四本 ６鴎嘗（直径）ｘ３ｍｓ（長さ）・傾
斜角度＝２５度
１；記条件ドにおいて、テンションロール群で繊維束の
品を調整しつつタイ内に送り込み含浸を行ない、冷却後
ベレタイザで長さ１５謬■のベレットを得た。・Melting temperature: 240℃ ・Rods: 4 rods 6 mm (diameter) x 3 ms (length) ・Inclination angle = 25 degrees 1 Feed impregnation was performed, and after cooling, a pellet with a length of 15 mm was obtained using a pelletizer.
及ム璽ユ
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と同様にしてベレットを得た。A pellet was obtained in the same manner as in Example 1, except that the thermoplastic resin was a styrene-maleic anhydride copolymer.
よ」１生旦
熱ＩＩｒ塑性樹脂をポリカーボネートとし、溶融温度を
３００℃とした以外は、実施例ｉと同様にしてベレット
を得た。A pellet was obtained in the same manner as in Example i, except that the plastic resin was polycarbonate and the melting temperature was 300°C.
害１０４４
タ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と同様にしてベレットを得た
。1044 A pellet was obtained in the same manner as in Example 1, except that the rods were arranged in the impregnated part of the tie as shown in FIG.
夫」０生旦
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と同様にしてベレットを（！Ｉた。A pellet was prepared in the same manner as in Example 4, except that the styrene-maleic anhydride copolymer was used as the thermoplastic resin.
Ｘ夏亘遣
８１１ｆ塑性樹脂をポリカーボネートとした以外は、実
施例４と同様にしてベレットを得た。A pellet was obtained in the same manner as in Example 4, except that polycarbonate was used as the plastic resin.
星艶薯ユ
二二軸混練機（ＴＥＮ−：１５）を用い、ボップロピレ
ンと酸変性ポリプロピレンをブレトンした後定量供給機
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（チョップストラ・ンド）な五！
驕４ｔｔ鎖鐘で 顧」ｈが婉融Ｌｔ−洛の廿イトフィー
トロへ供給し、混練を実施し、べ１ノツトをｆｌ）た。Bopp propylene and acid-modified polypropylene were mixed using a twin-screw kneader (TEN-:15), and then quantitatively fed to the hopper mouth using a metering feeder. In addition, aminosilane-treated glass fiber (chopped straw) is also available!
A 4tt chain bell was supplied to the 4th floor of the Lt.Lt., where it was kneaded and one knot was made.
比較例２
樹脂として、スヂレンーマレイン酸ノ（重合体を用いた
以外は、比較例１と同し条件でベレットを得た。Comparative Example 2 A pellet was obtained under the same conditions as Comparative Example 1 except that styrene-maleic acid (polymer) was used as the resin.
比較例３
相捕として、ポリカーボネートを用いた以外は、比較例
１と同し条件でベレットを得た。Comparative Example 3 A pellet was obtained under the same conditions as Comparative Example 1 except that polycarbonate was used as a compensator.
■１較例４
０ツトを除いた夕ぞを用いた以外は、実施例１と同様に
してベレットを得た。■1 Comparative Example 4 A pellet was obtained in the same manner as in Example 1, except that Yuzo was used except for 0 pieces.
を蚊璽ｊ
タイの含侵部におけるロッドの配若を第５図にイ、ずよ
うにした以外は、実施例１と同様にしてベレットを得た
。A pellet was obtained in the same manner as in Example 1, except that the arrangement of the rods in the impregnated part of the tie was changed as shown in FIG.
実施例１〜６、比較例１〜５で得られたベレットを用い
、射出成形ａ（東芝１ｓ−９０Ｂ）にて、テストピース
を作威し、その物性を評価した。Using the pellets obtained in Examples 1 to 6 and Comparative Examples 1 to 5, test pieces were made by injection molding a (Toshiba 1s-90B), and their physical properties were evaluated.
結果を第１表に示す。The results are shown in Table 1.
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）の引抜き連出（生産！−）
を変えて、ロービングの開繊度（樹脂の含浸度）及び１
！Ｉられたベレットての射出成形品中の繊維の分散状況
を比較した。Example 1. In Example 4, Comparative Example 4, and Comparative Example 5,
Pulling out fiber bundles (glass roving) (production!-)
By changing the opening degree of the roving (resin impregnation degree) and 1
! The dispersion status of fibers in the injection molded products of the pellets was compared.
ポリプロ（４０ｗｔ１）／ガラスロービング（６０ｗｔ
１）て実施した。Polypro (40wt1)/Glass roving (60wt)
1).
この結果を第２表に示す。The results are shown in Table 2.
［以ド、余白］
第２表
次に実施例工及び比較例５のストランド中の繊維の開繊
度及び分散度の状態を第６図及び第７図に示す。[Hereinafter, blank space] Table 2 Next, the opening degree and dispersion degree of the fibers in the strands of Example and Comparative Example 5 are shown in FIGS. 6 and 7.
実施例７
ガラス繊維束の代わりに、繊維径ａＩＬのステンレスｊ
ａｍ ９５０本のｍ＃１束を用いた以外は、実施例１と
同様にしてベレットを得た。Example 7 Instead of glass fiber bundle, stainless steel j with fiber diameter aIL
A pellet was obtained in the same manner as in Example 1 except that an m#1 bundle of 950 am was used.
星蚊亘±
ガラス繊維束の代わりに、繊維径８枇のステンレスｍ＃
Ｉ束を用いた以外は、比較例４と同様にしてベレットを
得た。Wataru Hoshimo ± Instead of glass fiber bundle, stainless steel m# with fiber diameter of 8
A pellet was obtained in the same manner as in Comparative Example 4 except that I bundle was used.
比較例７
ガラス繊維束の代わりに、繊維径８ルのステンレス繊維
条を用いた以外は、比較例５と同様にしてベレットを得
た。Comparative Example 7 A pellet was obtained in the same manner as Comparative Example 5, except that a stainless steel fiber strip with a fiber diameter of 8 mm was used instead of the glass fiber bundle.
比較例８
ガラスのチョップストライドの代わりに、繊維Ｐｆ、８
ｐ、長さ６■のステンレス繊維のカット品を用いた以外
は、比較例１と同様にしてベレットを得た。Comparative Example 8 Instead of glass chop stride, fiber Pf, 8
A pellet was obtained in the same manner as in Comparative Example 1, except that a cut piece of stainless steel fiber having a length of 6 cm was used.
それぞれ得られたベレットを用い射出成形により、＋４
ｈｍｘ目Ｏｍｍｘ３Ｉａ＋ｉの角板を成形し、その外観
をチエツクするとともに、その角板を用いて、体積固有
抵抗値を測定した。+4 by injection molding using each obtained pellet.
A rectangular plate of hmxth Ommx3Ia+i was molded, and its appearance was checked, and the volume resistivity value was measured using the rectangular plate.
その結果を第３表及び第８図のグラフに示す。The results are shown in Table 3 and the graph in FIG.
第３表
［発ＩＪＩの効果コ
以上のように本発明のｍ鹸化化樹脂成形材料の製造方法
によれば、ａｍ束中に熱可塑性溶融！ＩＩＷｒ１を十分
含浸させることができ、機械的強度か高く耐熱性に優れ
たｍ鹸化化樹脂成形材料を生産性よく得ることかできる
。Table 3 [Effects of IJI] As described above, according to the manufacturing method of the saponified resin molding material of the present invention, thermoplastic melts in the am bundle! IIWr1 can be sufficiently impregnated, and a m-saponified resin molding material having high mechanical strength and excellent heat resistance can be obtained with good productivity.
また１、ＪＫ発ＩＪＪの製造装置によれば、ｈ記繊鹸化
化樹廂成形材料の製造方法を確実に実施することかでき
る。In addition, 1. According to the manufacturing apparatus of IJJ from JK, the method for manufacturing the fiber saponified tree molding material described in h can be carried out reliably.
第１図は木兄１！１１装置の一実熾例の全体図、第２１
Ａはタイの拡大断面図、第３図は繊維束をロッドに巻き
掛けたときの拡大図、第４図はタイの他の実施例におけ
る拡大断面図、第５図はダイの従来例における拡大断面
図、第６図は本発明方法によって製造した成形材料の強
化繊維分散状態を不す拡人写真模写図、第７図は従来方
法によって製造した成形材料の強化繊維分散状態を示す
拡大写真模写同第８図は強化繊維の金石にと体積内イ１
抵抗植との関係を示す図である。
１０：タイ ２０：押出機
ｌｌ：子熱部 １２：ヒータ
１３、含侵部 １４：ロッド
出舶人 出光石油化学株式会社
出穎人 大１１本稍子工業株式会社
第
６
図
第
図
第
図
弦 ４ヒ緘、鑵４ソ屓會（ｖｔχ）Figure 1 is an overall view of a complete example of the Kinoe 1!11 device, and the 21st
A is an enlarged sectional view of the tie, Fig. 3 is an enlarged view of the fiber bundle wound around the rod, Fig. 4 is an enlarged sectional view of another embodiment of the tie, and Fig. 5 is an enlarged view of the conventional example of the die. 6 is an enlarged photographic reproduction showing the reinforcing fiber dispersion state of the molding material produced by the method of the present invention, and FIG. 7 is an enlarged photographic reproduction showing the reinforcing fiber dispersion state of the molding material produced by the conventional method. Figure 8 shows the inside volume of the reinforcing fibers.
It is a diagram showing the relationship with resistant plants. 10: Tie 20: Extruder II: Child heat section 12: Heater 13, impregnation section 14: Rod shipping person Idemitsu Petrochemical Co., Ltd. 4 hi ta, 鑵 4 sol meeting (vtχ)
Claims (7)
させ、繊維束に溶融樹脂を含浸させた後、ダイスより引
き出し、樹脂を硬化させることによって繊維強化樹脂成
形材料を製造する方法において、前記繊維束に溶融樹脂
を含浸させる際に、繊維束を、ロッドの中心を通る直線
に対し少なくとも一側が所定の角度だけ傾斜した状態で
ロッドに巻き掛け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) In a method for producing a fiber-reinforced resin molding material by continuously passing a fiber bundle through a molten thermoplastic resin, impregnating the fiber bundle with the molten resin, pulling it out from a die, and curing the resin. , a fiber reinforced resin molding material characterized in that, when impregnating the fiber bundle with molten resin, the fiber bundle is wound around the rod with at least one side inclined by a predetermined angle with respect to a straight line passing through the center of the rod. manufacturing method.
とも一側が１０度以上の傾斜角を有した状態でロッドに
巻き掛けることを特徴とした請求項１記載の繊維強化樹
脂成形材料の製造方法。(2) Manufacturing the fiber-reinforced resin molding material according to claim 1, wherein the fiber bundle is wound around the rod with at least one side having an inclination angle of 10 degrees or more with respect to a straight line passing through the center of the rod. Method.
ロッドに接触させることを特徴とした請求項１または２
記載の繊維強化樹脂成形材料の製造方法。(3) Claim 1 or 2, characterized in that the fiber bundle is brought into contact with a plurality of rods so that the fiber bundle forms a waveform.
A method for producing the fiber-reinforced resin molding material described above.
項１、２または３記載の繊維強化樹脂成形材料の製造方
法。(4) The method for producing a fiber-reinforced resin molding material according to claim 1, 2 or 3, wherein the fiber bundle is glass fiber.
た請求項１、２、３または４記載の繊維強化樹脂成形材
料の製造方法。(5) The method for producing a fiber-reinforced resin molding material according to claim 1, 2, 3 or 4, wherein the molten resin is a polyolefin.
給部と、 前記ダイ内部に設けられ、繊維束を、ロッドの中心を通
る直線に対し少なくとも一側が所定の角度だけ傾斜した
状態でロッドに巻き掛けるロッドと、 溶融樹脂を含浸した繊維束をダイより引き出す引出し手
段と を備えたことを特徴とする繊維強化樹脂成形材料の製造
装置。(6) a die through which the fiber bundle passes; a molten resin supply section that supplies a thermoplastic molten resin into the inside of the die; A manufacturing device for a fiber-reinforced resin molding material, comprising a rod that is wound around the rod while being inclined at a predetermined angle, and a pulling means for pulling out a fiber bundle impregnated with molten resin from a die.
たことを特徴とする請求項６記載の繊維強化樹脂成形材
料の製造装置。(7) The apparatus for manufacturing a fiber-reinforced resin molding material according to claim 6, characterized in that the rods are arranged linearly in the direction in which the fiber bundle is pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1322694A JP2829323B2 (en) | 1989-12-14 | 1989-12-14 | Equipment for manufacturing fiber-reinforced resin molding materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1322694A JP2829323B2 (en) | 1989-12-14 | 1989-12-14 | Equipment for manufacturing fiber-reinforced resin molding materials |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12128698A Division JP3234877B2 (en) | 1998-04-30 | 1998-04-30 | Method for producing fiber reinforced resin pellets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03183531A true JPH03183531A (en) | 1991-08-09 |
| JP2829323B2 JP2829323B2 (en) | 1998-11-25 |
Family
ID=18146572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1322694A Expired - Lifetime JP2829323B2 (en) | 1989-12-14 | 1989-12-14 | Equipment for manufacturing fiber-reinforced resin molding materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2829323B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03230943A (en) * | 1990-02-06 | 1991-10-14 | Polyplastics Co | Production of long-fiber reinforced thermoplastic resin composition and producing equipment therefor |
| JPH06143440A (en) * | 1992-11-02 | 1994-05-24 | Asahi Chem Ind Co Ltd | Manufacture of fiber-reinforced thermoplastic resin structural body |
| WO1996005956A1 (en) * | 1994-08-19 | 1996-02-29 | Polyplastics Co., Ltd. | Method for producing long fiber-reinforced thermoplastic resin composition |
| WO1997019805A1 (en) * | 1995-11-30 | 1997-06-05 | Chisso Corporation | Method of manufacturing long-fiber-reinforced resin structure, and method and apparatus for manufacturing columnar-shaped bodies |
| JPH10264152A (en) * | 1998-04-30 | 1998-10-06 | Idemitsu Petrochem Co Ltd | Manufacture of fiber reinforced resin pellet |
| US6251206B1 (en) | 1997-06-10 | 2001-06-26 | Chisso Corporation | Method for opening and resin-impregnation to produce continuous fiber-reinforced thermoplastic resin composite material |
| JP2005040996A (en) * | 2003-07-23 | 2005-02-17 | Toyobo Co Ltd | Organic fibre reinforced resin pellet, its manufacturing method and resin molded product |
| JP2016124887A (en) * | 2014-12-26 | 2016-07-11 | 三菱エンジニアリングプラスチックス株式会社 | Carbon filament/polycarbonate resin composite material, and production process for carbon filament/polycarbonate resin composite pellet |
| JP2019001066A (en) * | 2017-06-15 | 2019-01-10 | 宇部エクシモ株式会社 | Production method of long fiber reinforced thermoplastic resin filamentous material |
| WO2020091051A1 (en) * | 2018-11-02 | 2020-05-07 | 株式会社プライムポリマー | Long fiber-reinforced propylene-based resin composition and long fiber-reinforced molded body |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61229534A (en) * | 1985-04-04 | 1986-10-13 | Kouseinou Jushi Shinseizou Gijutsu Kenkyu Kumiai | Method and device for manufacturing fiber reinforced resin sheet |
| JPS61229535A (en) * | 1985-04-04 | 1986-10-13 | Kouseinou Jushi Shinseizou Gijutsu Kenkyu Kumiai | Method and device for manufacturing fiber reinforced resin sheet |
| JPS63251228A (en) * | 1987-04-08 | 1988-10-18 | Teijin Ltd | Filament winding method |
| JPH02255838A (en) * | 1988-11-10 | 1990-10-16 | Stamicarbon Bv | Manufacture of composite material, composite material, and molded article made therefrom |
-
1989
- 1989-12-14 JP JP1322694A patent/JP2829323B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61229534A (en) * | 1985-04-04 | 1986-10-13 | Kouseinou Jushi Shinseizou Gijutsu Kenkyu Kumiai | Method and device for manufacturing fiber reinforced resin sheet |
| JPS61229535A (en) * | 1985-04-04 | 1986-10-13 | Kouseinou Jushi Shinseizou Gijutsu Kenkyu Kumiai | Method and device for manufacturing fiber reinforced resin sheet |
| JPS63251228A (en) * | 1987-04-08 | 1988-10-18 | Teijin Ltd | Filament winding method |
| JPH02255838A (en) * | 1988-11-10 | 1990-10-16 | Stamicarbon Bv | Manufacture of composite material, composite material, and molded article made therefrom |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03230943A (en) * | 1990-02-06 | 1991-10-14 | Polyplastics Co | Production of long-fiber reinforced thermoplastic resin composition and producing equipment therefor |
| JPH06143440A (en) * | 1992-11-02 | 1994-05-24 | Asahi Chem Ind Co Ltd | Manufacture of fiber-reinforced thermoplastic resin structural body |
| US5788908A (en) * | 1994-08-19 | 1998-08-04 | Polyplastics Co., Ltd. | Method for producing long fiber-reinforced thermoplastic resin composition |
| WO1996005956A1 (en) * | 1994-08-19 | 1996-02-29 | Polyplastics Co., Ltd. | Method for producing long fiber-reinforced thermoplastic resin composition |
| CN1066676C (en) * | 1995-11-30 | 2001-06-06 | 智索股份有限公司 | Method of mfg. long-fiber-reinforced resin structure, and method and apparatus for mfg. columnar-shaped bodies |
| WO1997019805A1 (en) * | 1995-11-30 | 1997-06-05 | Chisso Corporation | Method of manufacturing long-fiber-reinforced resin structure, and method and apparatus for manufacturing columnar-shaped bodies |
| US6251206B1 (en) | 1997-06-10 | 2001-06-26 | Chisso Corporation | Method for opening and resin-impregnation to produce continuous fiber-reinforced thermoplastic resin composite material |
| JPH10264152A (en) * | 1998-04-30 | 1998-10-06 | Idemitsu Petrochem Co Ltd | Manufacture of fiber reinforced resin pellet |
| JP2005040996A (en) * | 2003-07-23 | 2005-02-17 | Toyobo Co Ltd | Organic fibre reinforced resin pellet, its manufacturing method and resin molded product |
| JP2016124887A (en) * | 2014-12-26 | 2016-07-11 | 三菱エンジニアリングプラスチックス株式会社 | Carbon filament/polycarbonate resin composite material, and production process for carbon filament/polycarbonate resin composite pellet |
| JP2019001066A (en) * | 2017-06-15 | 2019-01-10 | 宇部エクシモ株式会社 | Production method of long fiber reinforced thermoplastic resin filamentous material |
| WO2020091051A1 (en) * | 2018-11-02 | 2020-05-07 | 株式会社プライムポリマー | Long fiber-reinforced propylene-based resin composition and long fiber-reinforced molded body |
| JPWO2020091051A1 (en) * | 2018-11-02 | 2021-09-24 | 株式会社プライムポリマー | Long fiber reinforced propylene resin composition and long fiber reinforced molded product |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2829323B2 (en) | 1998-11-25 |
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