JPH05147034A - Production of stamp molding sheet - Google Patents
Production of stamp molding sheetInfo
- Publication number
- JPH05147034A JPH05147034A JP3339540A JP33954091A JPH05147034A JP H05147034 A JPH05147034 A JP H05147034A JP 3339540 A JP3339540 A JP 3339540A JP 33954091 A JP33954091 A JP 33954091A JP H05147034 A JPH05147034 A JP H05147034A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- die
- sheet
- reinforcing fibers
- reinforcing fiber
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、スタンプ成形用シート
の製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a stamp forming sheet.
【０００２】[0002]
【従来の技術】ガラス繊維マット等の補強材に、熱可塑
性樹脂を含浸させたシートは、スタンプ成形法によりＦ
ＲＴＰを製造するための成形材料（スタンプ成形用シー
ト）として広く用いられている。又、補強材としては、
ガラス繊維よりなるマットが用いられることが多い。ス
タンプ成形用シートは、補強材と熱可塑性樹脂とを、加
熱、加圧し、更に加圧、冷却することによって製造さ
れ、このような製造法としてプレス法、ベルトプレス法
等が知られている。2. Description of the Related Art A sheet obtained by impregnating a reinforcing material such as a glass fiber mat with a thermoplastic resin is subjected to a stamping method to form an F sheet.
It is widely used as a molding material (sheet for stamp molding) for producing RTP. Also, as a reinforcing material,
Mats made of glass fibers are often used. The stamp forming sheet is manufactured by heating, pressurizing, and further pressing and cooling a reinforcing material and a thermoplastic resin. As such a manufacturing method, a pressing method, a belt pressing method and the like are known.
【０００３】[0003]
【発明が解決しようとする課題】従来技術は、次のよう
な問題点を有する。樹脂含浸装置は、加熱、加圧下で使
用され、又、回転部分、摺動部分を有するので、含浸装
置は高級材料で製造する必要があり、価格も大となり、
メンテナンス費も大となる。又、加圧、加熱下で熱可塑
性樹脂を含浸させたシートを、高温に加熱されたまま取
出すと、補強材の弾性反発力によりシートが膨らんでし
まい、シート内部にボイドが生ずる。ボイドの発生を防
止しようとすると、加圧状態でシートを冷却するための
別の装置が必要となる。本発明は、上述した従来技術の
問題点を解決し、高価で、複雑な設備を使用することな
く、メンテナンスも容易なスタンプ成形用シートの製造
法を提供することを目的とする。The prior art has the following problems. Since the resin impregnation device is used under heating and pressure, and has a rotating part and a sliding part, it is necessary to manufacture the impregnation device with a high-grade material, and the price becomes large.
Maintenance costs are also high. Further, if the sheet impregnated with the thermoplastic resin under pressure and heating is taken out while being heated to a high temperature, the elastic repulsive force of the reinforcing material causes the sheet to swell, resulting in voids inside the sheet. In order to prevent the occurrence of voids, another device for cooling the sheet under pressure is required. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, and to provide a method for manufacturing a stamp forming sheet which is expensive, requires no complicated equipment, and is easy to maintain.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、本発明においては、補強用繊維と熱可塑性樹脂と
を、加熱下に、テーパーを有するダイス中を通して引出
し、樹脂を補強用繊維中に含浸させ、ダイスから引出さ
れたシートを、加圧、冷却機能を備えた引取り装置を通
して引出すことにより、スタンプ成形用シートを製造す
る。In order to achieve the above object, in the present invention, the reinforcing fiber and the thermoplastic resin are drawn out through a die having a taper under heating, and the resin is removed from the reinforcing fiber. The sheet for stamp forming is manufactured by impregnating the sheet with the sheet and pulling the sheet pulled out from the die through a take-up device having a pressure and cooling function.
【０００５】次に、本発明を図１に就いて更に具体的に
説明する。本発明において、補強用繊維としては、ガラ
ス繊維、炭素繊維等の単繊維又はこれらを引揃えたもの
を、長尺のままループ状をなして堆積せしめてなるマッ
ト、或はこれらの繊維を抄造してなるマット等を用いる
ことができる。例えば、ガラス繊維に集束剤を附与、集
束してなるストランドを長尺のままループ状に堆積させ
たＣＳＭ、又はストランドの切断物（ＣＳ）を堆積させ
たＣＭ、ガラス繊維を抄造してなるガラスペーパー、或
はこれらの複合物等を好適に使用することができる。な
お、ストランドとして、開繊したストランドを使用する
こともできる。ガラス繊維の平均直径は６〜２５μｍ、
望ましくは９〜２０μｍ、ストランドの集束本数は５０
〜８，０００本、望ましくは８０〜４，０００本、スト
ランドのＴｅｘ（１，０００ｍ当りの重量、ｇｒ）は１
０〜１０，０００、望ましくは１５〜５，０００、ｍ2
当りの重量は１００〜３，０００ｇｒ、望ましくは２０
０〜２，０００ｇｒとするのが適当である。Next, the present invention will be described more specifically with reference to FIG. In the present invention, as the reinforcing fiber, a single fiber such as glass fiber, carbon fiber, or the like obtained by aligning these fibers is formed into a mat in which loop fibers are piled up in a long state, or these fibers are formed into paper. It is possible to use a mat or the like. For example, a CSM in which a strand formed by adding a sizing agent to a glass fiber and being bundled is deposited in a loop shape as long as it is, a CM in which a cut product (CS) of the strand is deposited, or a glass fiber is manufactured. Glass paper or a composite of these can be preferably used. In addition, as the strand, an opened strand can also be used. The average diameter of the glass fiber is 6 to 25 μm,
Desirably 9 to 20 μm, and the number of strand bundles is 50
~ 8,000, preferably 80 to 4,000, and the Tex (weight per 1,000 m, gr) of the strand is 1.
0 to 10,000, preferably 15 to 5,000, m 2
The weight per unit is 100 to 3,000 gr, preferably 20
It is suitable to set it to 0 to 2,000 gr.
【０００６】熱可塑性樹脂としては特に限定はなく、Ｐ
Ｅ、ＰＰ、ＰＥＴ、ＰＶＣ、ＮＹ、ＰＣ、ＰＢＴ、ＰＰ
Ｓ等が好適に使用できる。熱可塑性樹脂は、フィルム状
として使用し、前述の補強用繊維と重ね合わせてダイス
に供給しても良く、或は粉末状、粒状又は繊維状の熱可
塑性樹脂をマット状の補強用繊維に撒布しても良く、或
は又ストランド、ＣＳ等を落下、堆積させてマット状の
補強用繊維を製造する際、熱可塑性樹脂粉末等を同時に
落下させることもできる。補強用繊維に対する熱可塑性
樹脂の割合は、補強用繊維の重量が、補強用繊維と樹脂
との合計量の１０〜５０ｗｔ％、望ましくは２０〜４０
ｗｔ％となるよう定めるのが適当である。The thermoplastic resin is not particularly limited, and P
E, PP, PET, PVC, NY, PC, PBT, PP
S and the like can be preferably used. The thermoplastic resin may be used in the form of a film and may be supplied to the die by superimposing it on the reinforcing fiber described above, or the powdery, granular or fibrous thermoplastic resin may be sprinkled on the mat-shaped reinforcing fiber. Alternatively, the thermoplastic resin powder or the like can be dropped at the same time when the strands, CS and the like are dropped and deposited to produce a mat-shaped reinforcing fiber. The ratio of the thermoplastic resin to the reinforcing fiber is such that the weight of the reinforcing fiber is 10 to 50 wt% of the total amount of the reinforcing fiber and the resin, and preferably 20 to 40.
It is appropriate to set it to be wt%.
【０００７】本発明においては、補強用繊維を熱可塑性
樹脂とともに、テーパーを有し加熱されたダイス中を通
して引出し、この間に熱可塑性樹脂を軟化或は溶融させ
て、補強用繊維に含浸させる。本発明の方法によるとき
は、補強用繊維として、ダイスを通して引張ることによ
って生じる摩擦力に充分耐えうる引張り強度を有するも
のを使用するか、補強材を併用するか、或は摩擦力を低
減する必要がある。補強用繊維を構成する繊維或は引揃
え物をバインダで結合し、或はニードリングを行ない、
空気流又は水流により繊維同志をからませることによ
り、補強用繊維の引張り強度を大とすることができる。In the present invention, the reinforcing fiber together with the thermoplastic resin is drawn out through a tapered and heated die, during which the thermoplastic resin is softened or melted to impregnate the reinforcing fiber. According to the method of the present invention, it is necessary to use, as the reinforcing fiber, one having a tensile strength sufficient to withstand the frictional force generated by pulling through a die, use a reinforcing material together, or reduce the frictional force. There is. The fibers or the aligning materials constituting the reinforcing fibers are bound with a binder, or needling is performed.
By entangling the fibers with each other by the air flow or the water flow, the tensile strength of the reinforcing fiber can be increased.
【０００８】或は、補強用繊維の長手方向にストランド
を配設し、又は補強用繊維と不織布を重ね、好ましくは
補強用繊維とこれらの補強材をニードリング或は接着等
の手段で結合することにより引張り強度を大とすること
もできる。或は又、補強用繊維を一対の無端ベルト（図
示せず）で挾持し、この無端ベルトを補強用繊維と同一
速度で移動させ、補強用繊維を無端ベルトで挾持したま
まダイス中を通過させることにより、ダイスと補強用繊
維の摩擦力を低減することができる。Alternatively, a strand is arranged in the longitudinal direction of the reinforcing fiber, or a reinforcing fiber and a non-woven fabric are superposed, and preferably the reinforcing fiber and these reinforcing materials are bonded by means such as needling or adhesion. Therefore, the tensile strength can be increased. Alternatively, the reinforcing fiber is held by a pair of endless belts (not shown), the endless belt is moved at the same speed as the reinforcing fiber, and the reinforcing fiber is passed through the die while being held by the endless belt. As a result, the frictional force between the die and the reinforcing fiber can be reduced.
【０００９】ダイス１としては、上面２、下面３の間隔
が次第に狭くなり、且つ両面の交角が１〜８９度、望ま
しくは２〜３０度のテーパーを有するものを使用するの
が適当である。ダイス入口部４の厚みを出口部１４の厚
みの１．０１〜５倍、望ましくは１．０５〜４倍、更に
望ましくは１．１〜３倍とすることにより好適な結果を
うることができた。なお、ダイスの入口部４には若干の
アールを与えることにより、補強用繊維５と、熱可塑性
樹脂とのダイスへの引込みを一層良好とすることができ
る。なお、又テーパーは必ずしもダイスの全長に且つて
形成せしめる必要はなく、ダイスの出口付近は、テーパ
ーのないものでも差支えない。熱可塑性樹脂の供給方法
に特に限定はないが、例えば溶融樹脂供給装置６から熱
可塑性樹脂溶融物７を供給してもよく、或は熱可塑性樹
脂フィルム８をロール９から供給することもできる。As the die 1, it is suitable to use a die in which the distance between the upper surface 2 and the lower surface 3 is gradually narrowed and the angle of intersection between the two surfaces is 1 to 89 degrees, preferably 2 to 30 degrees. A preferable result can be obtained by setting the thickness of the die inlet portion 4 to 1.01 to 5 times, preferably 1.05 to 4 times, and more preferably 1.1 to 3 times the thickness of the outlet portion 14. It was By providing a slight radius to the entrance portion 4 of the die, it is possible to further improve the drawing of the reinforcing fiber 5 and the thermoplastic resin into the die. In addition, the taper does not necessarily have to be formed over the entire length of the die, and the vicinity of the die outlet may have no taper. The method of supplying the thermoplastic resin is not particularly limited, but for example, the thermoplastic resin melt 7 may be supplied from the molten resin supply device 6, or the thermoplastic resin film 8 may be supplied from the roll 9.
【００１０】加熱方法は特に限定はなく、ダイスを電熱
等で加熱してもよく、或は高周波を用いて樹脂を直接加
熱することもできる。The heating method is not particularly limited, and the die may be heated by electric heating or the like, or the resin can be directly heated by using high frequency.
【００１１】補強用繊維と熱可塑性樹脂とを、加熱下
に、テーパーを有するダイス中を引張り、移動させるこ
とにより、圧力装置を使用することなく、常圧で熱可塑
性樹脂を補強用繊維に含浸させることができ、補強繊維
が引張りによりうける力も小さいことが判明した。その
作用については充分明らかでないが、ダイス上面、下面
の間隔が次第に狭くなるため、熱可塑性樹脂がダイス面
で内部に押圧され、補強用繊維に充分含浸するものと思
われる。The reinforcing fiber and the thermoplastic resin are pulled and moved in a die having a taper while being heated so that the reinforcing fiber is impregnated with the thermoplastic resin at normal pressure without using a pressure device. It was found that the reinforcing fibers could be made to exert a small force by pulling. Although its action is not sufficiently clear, it is considered that since the distance between the upper surface and the lower surface of the die is gradually narrowed, the thermoplastic resin is pressed inside by the die surface and is sufficiently impregnated into the reinforcing fiber.
【００１２】ダイス１から引出された熱可塑性樹脂が含
浸せしめられた補強用繊維（本シート）１０を、加圧、
冷却機能を備えた引取り装置１１を通して引張り、シー
ト１０を樹脂の軟化点以下に冷却することにより、スタ
ンプ成形用シート１２をうることができる。なお、１３
はキャタビラ、１５は入口部である。引取り装置１１に
冷却機能を附与する方法に特に限定はないが、引取り装
置１１に冷却用パイプ、冷媒パイプ（図示せず）を設け
ることにより、引取り装置を効率的に冷却することがで
きる。なお、ダイス１と引取り装置１１の間に若干間隔
を設け、両者を隔置するのが望ましいが、両者を接続
し、その間に断熱部材を介在させることもできる。A reinforcing fiber (main sheet) 10 impregnated with a thermoplastic resin drawn from a die 1 is pressed,
The stamp forming sheet 12 can be obtained by pulling the sheet 10 through the take-up device 11 having a cooling function and cooling the sheet 10 to the softening point of the resin or lower. In addition, 13
Is a caterpillar, and 15 is an entrance. Although there is no particular limitation on the method of providing the take-up device 11 with a cooling function, the take-up device 11 can be efficiently cooled by providing the take-up device 11 with a cooling pipe and a refrigerant pipe (not shown). You can It is desirable that a slight gap be provided between the die 1 and the take-up device 11 so that they are separated from each other, but it is also possible to connect both and to interpose a heat insulating member therebetween.
【００１３】[0013]
【作用】補強用繊維と熱可塑性樹脂とを、加熱下にテー
パーを有するダイス中を通して引出し、樹脂を補強繊維
中に含浸させ、ダイスから引出されたシートを加圧、冷
却機能を備えた引取り装置中を通して引出すことによ
り、スタンプ成形用シートを簡単に、メンテナンスを要
することなく製造する。[Function] The reinforcing fiber and the thermoplastic resin are drawn out through a die having a taper under heating, the reinforcing fiber is impregnated with the resin, and the sheet drawn out from the die is pressed and has a cooling function. The stamp forming sheet can be easily manufactured without maintenance by pulling it through the apparatus.
【００１４】[0014]
【実施例】平均直径１３μｍのガラス繊維に集束剤を附
与して、１，６００本集束してなる、Ｔｅｘ５７５のガ
ラス繊維束を４００ｇｒ／ｍ2 の割合で落下、堆積させ
たＣＭの間に、１３μｍのガラス繊維を３，２００本集
束してなるＴｅｘ１，１５０のロービングを約１ｃｍの
間隔で長手方向に平行に配設し、ＣＭとロービングとを
ニードリングして積層物とした。この積層物の上下両面
に、厚さ０．８ｍｍのＰＰフィルムを重ね、入口部で２
０度のテーパーを有する、長さ２ｍのダイス（入口部の
間隔１０ｍｍ、出口部の間隔３．８ｍｍ）中を、２００
℃に加熱しつつ引出し、ついで冷却、加圧しながら引取
ることにより、均質なスタンプ成形用シートを製造する
ことができた。EXAMPLE A glass fiber having an average diameter of 13 μm was provided with a sizing agent, and 1,600 bundles of Tex575 glass fiber bundles were dropped at a rate of 400 gr / m 2 between CM deposited and deposited. , Tev 1,150 rovings formed by concentrating 3,200 glass fibers of 13 μm were arranged in parallel in the longitudinal direction at intervals of about 1 cm, and the CM and the rovings were needling to obtain a laminate. A 0.8 mm thick PP film is laminated on both the upper and lower sides of this laminate, and 2 at the entrance.
200 m in a die with a taper of 0 degree and a length of 2 m (inlet interval 10 mm, outlet interval 3.8 mm)
It was possible to produce a homogeneous stamp-forming sheet by pulling out while heating at 0 ° C., then cooling and taking out while applying pressure.
【００１５】[0015]
【発明の効果】スタンプ成形用シートを、複雑な設備を
使用することなく製造でき、メンテナンスも簡単であ
る。EFFECT OF THE INVENTION A stamp forming sheet can be manufactured without using complicated equipment and maintenance is easy.
【００１６】[0016]
【図１】図１は本発明を説明するための断面図である。FIG. 1 is a sectional view for explaining the present invention.
１ ダイス ２ 上面 ３ 下面 ４ 入口部 ５ 補強用繊維 ６ 溶融樹脂供給装置 ７ 熱可塑性樹脂溶融物 ８ フィルム ９ ロール １０ シート １１ ダイス １２ スタンプ成形用シート １３ キャタビラ １４ 出口部 １５ 入口部 DESCRIPTION OF SYMBOLS 1 Die 2 Upper surface 3 Lower surface 4 Inlet 5 Fiber for reinforcement 6 Molten resin supply device 7 Thermoplastic resin melt 8 Film 9 Roll 10 Sheet 11 Die 12 Stamp forming sheet 13 Caterpillar 14 Outlet 15 Inlet
Claims (1)
に、テーパーを有するダイス中を通して引出し、樹脂を
補強用繊維中に含浸させ、ダイスから引出されたシート
を加圧、冷却機能を備えた引取り装置を通して引出すこ
とを特徴とするスタンプ成形用シートの製造法。1. A reinforcing fiber and a thermoplastic resin are drawn out through a die having a taper under heating, the resin is impregnated in the reinforcing fiber, and a sheet drawn out from the die is pressed and cooled. A method for producing a stamp-forming sheet, which comprises pulling out through a provided take-up device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3339540A JPH05147034A (en) | 1991-11-29 | 1991-11-29 | Production of stamp molding sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3339540A JPH05147034A (en) | 1991-11-29 | 1991-11-29 | Production of stamp molding sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05147034A true JPH05147034A (en) | 1993-06-15 |
Family
ID=18328442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3339540A Pending JPH05147034A (en) | 1991-11-29 | 1991-11-29 | Production of stamp molding sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05147034A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002127263A (en) * | 2000-10-27 | 2002-05-08 | Sekisui Chem Co Ltd | Method for manufacturing thick pultruded item |
| JP2008194988A (en) * | 2007-02-15 | 2008-08-28 | Murata Mach Ltd | Resin-impregnation apparatus |
| US20130122262A1 (en) * | 2010-07-13 | 2013-05-16 | Teijin Limited | Carbon Fiber Bundle, Method for Producing The Same, and Molded Article Made Thereof |
Citations (7)
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|---|---|---|---|---|
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| JPS5210374A (en) * | 1975-07-16 | 1977-01-26 | Teijin Ltd | Manufacture of thermal setting moulding material |
| JPS5430265A (en) * | 1977-08-12 | 1979-03-06 | Ube Ind Ltd | Production of reinforced polyamide sheet |
| JPS58132514A (en) * | 1982-02-01 | 1983-08-06 | Kato Hatsujo Kaisha Ltd | Glass fiber reinforced molding material and manufacturing apparatus thereof |
| JPS58205725A (en) * | 1982-05-25 | 1983-11-30 | Mitsui Toatsu Chem Inc | Preparation of prepreg |
| JPH0258544A (en) * | 1988-08-23 | 1990-02-27 | Kuraray Co Ltd | Material for stamping-molding |
| JPH02229021A (en) * | 1989-01-30 | 1990-09-11 | Edison Polymer Innov Corp | Manufacture of composite material |
-
1991
- 1991-11-29 JP JP3339540A patent/JPH05147034A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129662A (en) * | 1974-04-03 | 1975-10-14 | ||
| JPS5210374A (en) * | 1975-07-16 | 1977-01-26 | Teijin Ltd | Manufacture of thermal setting moulding material |
| JPS5430265A (en) * | 1977-08-12 | 1979-03-06 | Ube Ind Ltd | Production of reinforced polyamide sheet |
| JPS58132514A (en) * | 1982-02-01 | 1983-08-06 | Kato Hatsujo Kaisha Ltd | Glass fiber reinforced molding material and manufacturing apparatus thereof |
| JPS58205725A (en) * | 1982-05-25 | 1983-11-30 | Mitsui Toatsu Chem Inc | Preparation of prepreg |
| JPH0258544A (en) * | 1988-08-23 | 1990-02-27 | Kuraray Co Ltd | Material for stamping-molding |
| JPH02229021A (en) * | 1989-01-30 | 1990-09-11 | Edison Polymer Innov Corp | Manufacture of composite material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002127263A (en) * | 2000-10-27 | 2002-05-08 | Sekisui Chem Co Ltd | Method for manufacturing thick pultruded item |
| JP2008194988A (en) * | 2007-02-15 | 2008-08-28 | Murata Mach Ltd | Resin-impregnation apparatus |
| US20130122262A1 (en) * | 2010-07-13 | 2013-05-16 | Teijin Limited | Carbon Fiber Bundle, Method for Producing The Same, and Molded Article Made Thereof |
| US9222202B2 (en) * | 2010-07-13 | 2015-12-29 | Teijin Limited | Carbon fiber bundle, method for producing the same, and molded article made thereof |
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