JPH03142206A - Molding method for thermosetting resin - Google Patents
Molding method for thermosetting resinInfo
- Publication number
- JPH03142206A JPH03142206A JP1281389A JP28138989A JPH03142206A JP H03142206 A JPH03142206 A JP H03142206A JP 1281389 A JP1281389 A JP 1281389A JP 28138989 A JP28138989 A JP 28138989A JP H03142206 A JPH03142206 A JP H03142206A
- Authority
- JP
- Japan
- Prior art keywords
- smc
- mold
- curing
- curing time
- molding
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 27
- 229920005989 resin Polymers 0.000 title claims abstract description 13
- 239000011347 resin Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 10
- 229920001187 thermosetting polymer Polymers 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000001723 curing Methods 0.000 claims abstract 6
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 abstract description 13
- 239000000945 filler Substances 0.000 abstract description 7
- 101100095984 Caenorhabditis elegans smc-4 gene Proteins 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 abstract description 4
- 238000013007 heat curing Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920006337 unsaturated polyester resin Polymers 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 1
- 101000825726 Homo sapiens Structural maintenance of chromosomes protein 4 Proteins 0.000 description 1
- 241000258239 Mantodea Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 102100022842 Structural maintenance of chromosomes protein 4 Human genes 0.000 description 1
- UPIWXMRIPODGLE-UHFFFAOYSA-N butyl benzenecarboperoxoate Chemical compound CCCCOOC(=O)C1=CC=CC=C1 UPIWXMRIPODGLE-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、成形材料としてＳ Ｍ Ｃ（Ｓｈｅｅｔ Ｍ
。[Detailed Description of the Invention] [Industrial Application Field] The present invention uses SMC (Sheet M
.
Ｉｄｉｎｇ Ｃｏｍｐｏｕｎｄ）を用い、これを金型に
装入し、プレス成形機等によって加圧、加熱して硬化す
る、熱硬化性樹脂成形法に関する。The present invention relates to a thermosetting resin molding method in which the compound is charged into a mold and cured by applying pressure and heating using a press molding machine or the like.
従来、ＳＭＣを用いた熱硬化性樹脂成形法は、ガラス繊
維マットまたはチＭ７プドストランドに、不飽和ポリエ
ステル樹脂等の熱硬化性樹脂、硬化剤、増粘剤、充填剤
、顔料等を混合したペースト状の混合物を含浸させた後
、ポリエチレン等のフィルムで両面を被覆してシート状
とし、所定の温度に一定時装置いて、化学反応によって
増粘させ、粘着性のない状態にしたシート状物、即ちＳ
ＭＣの原反を成形材料とし、成形に当っては、ＳＭＣの
原反からフィルムを剥離し、所定の寸法に裁断したＳＭ
Ｃを所定重量計量し、加熱したマンチドダイに装入し、
プレス成形機等によって加圧硬化させることによって行
われている。Conventionally, the thermosetting resin molding method using SMC is a paste made by mixing a glass fiber mat or chip M7 strand with a thermosetting resin such as an unsaturated polyester resin, a curing agent, a thickening agent, a filler, a pigment, etc. After impregnating the mixture with the above mixture, both sides are covered with a film such as polyethylene to form a sheet, and the sheet is kept at a predetermined temperature for a certain period of time to thicken it through a chemical reaction and become non-tacky. That is, S
The original MC fabric is used as the molding material, and during molding, the film is peeled off from the original SMC fabric and the SM is cut into predetermined dimensions.
Weigh C to a specified weight and charge it into a heated mantid die,
This is done by hardening under pressure using a press molding machine or the like.
しかし、プレス成形サイクルは、■材料装入、■型閉、
■硬化、■型開、■製品取出し、の５段階の工程から戒
り立っており、このうち■硬化が成形の主要工程であっ
て且つ最もサイクル時間が長く、例えばある成形品で、
ｌ成形サイクル２５０秒のうち、硬化に２００秒を要す
るという例がある。この硬化時間は成形品の肉厚によっ
て支配され、肉厚が大となる程長くなる。従って、例え
ばＦＲＰ浴槽、防水パン等のように、全体の肉厚は４〜
７ＩＩＩＩＩ＋程度であっても、底部裏面のリブや脚取
付部ボス等、１５ｍｍ前後の厚肉部を有する成形品の場
合、その極く一部分の肉厚に見合った硬化時間を取る必
要があるため成形サイクル時間が長くなり、生産性を低
下させてしまうという問題がある。However, the press molding cycle consists of ■Material charging, ■Mold closing,
There are five steps in the process: ■curing, ■mold opening, and ■product removal.Of these, ■curing is the main process of molding and takes the longest cycle time.For example, in a certain molded product,
There is an example in which curing takes 200 seconds out of a 250 second molding cycle. This curing time is controlled by the wall thickness of the molded article, and increases as the wall thickness increases. Therefore, for example, FRP bathtubs, waterproof pans, etc., the overall wall thickness is 4~
Even if it is about 7III+, in the case of molded products with thick parts of around 15 mm, such as the ribs on the back of the bottom or the leg attachment bosses, it is necessary to take a curing time commensurate with the thickness of a very small part of the molding. There is a problem in that the cycle time becomes longer and productivity is lowered.
本発明は従来技術のこのような問題点を解決するために
なされたものであり、その目的とする所は、部分的な厚
肉部（以下単に「厚肉部」と称する）を有する成形品を
成形する場合の成形サイクル時間を短縮して、生産性を
向上せしめようとするところにある。The present invention has been made to solve these problems of the prior art, and its purpose is to provide a molded product having a partial thick wall portion (hereinafter simply referred to as "thick wall section"). The aim is to improve productivity by shortening the molding cycle time when molding.
上記目的を達成するために、本発明の熱硬化性樹脂成形
法は、ＳＭＣよりも硬化時間の短い材料を、厚肉部に対
応する型窩に供給した後、ＳＭＣを金型内に装入して、
加圧、加熱し硬化させることを要旨とするものである。In order to achieve the above object, the thermosetting resin molding method of the present invention supplies a material with a shorter curing time than SMC to the mold cavity corresponding to the thick part, and then charges the SMC into the mold. do,
The gist of this is to apply pressure and heat to harden.
金型は、厚肉部を成形する型窩が下型に含まれるように
製作したものをプレス成形機に取付け、フィーダから送
り込まれるＳＭＣよりも硬化時間の短い材料を、該厚肉
部を成形する型窩に供給する。The mold is manufactured so that the mold cavity for molding the thick part is included in the lower mold, and it is attached to a press molding machine, and the thick part is molded using a material that takes a shorter curing time than the SMC fed from the feeder. feed into the mold cavity.
ＳＭＣよりも硬化時間の短い材料は、熱硬化性樹脂と充
填材を主成分とする混合物である。A material with a shorter curing time than SMC is a mixture whose main components are a thermosetting resin and a filler.
熱硬化性樹脂としては、不飽和ポリエステル樹脂、エポ
キシ樹脂等が使用可能で、これに硬化剤、必要により硬
化時間を短縮するための促進剤を加える。硬化剤として
は以下のようなものが用いられる。As the thermosetting resin, unsaturated polyester resin, epoxy resin, etc. can be used, to which a curing agent and, if necessary, an accelerator to shorten the curing time are added. As the curing agent, the following can be used.
■不飽和ポリエステル樹脂の場合
・ベンゾイルパーオキサイド
・ラウロイルパーオキサイド
・メチルエチルケトンパーオキサイドに促進剤としてナ
フテン酸コバルト
■エポキシ樹脂の場合
・アごン系硬化剤
充填材としては、炭酸カルシウム、クレータルク、珪砂
等が用いられるが、更に好ましくは強度を向上させるた
めに、短繊維長のガラス繊維、合成繊維等を添加する。■For unsaturated polyester resins - Cobalt naphthenate as an accelerator for benzoyl peroxide, lauroyl peroxide, methyl ethyl ketone peroxide ■For epoxy resins - Agon-based hardener Fillers include calcium carbonate, clay talc, silica sand, etc. However, more preferably short fiber length glass fibers, synthetic fibers, etc. are added in order to improve the strength.
なお、ＳＭＣの裁断、秤量、積み重ね、金型への装入、
フィーダによるＳＭＣよりも硬化時間の短い材料の均一
供給、金型の開閉、成形品の取出し等の工程は、自動的
に行われる装置となされている。In addition, SMC cutting, weighing, stacking, charging into molds,
The device is designed to automatically perform processes such as uniformly supplying a material with a shorter curing time than SMC by a feeder, opening and closing a mold, and taking out a molded product.
また、秤量に際しては、通常秤量機を用いるが、該秤量
機は所定寸法に裁断されたＳＭＣを、所定の装入重量ｈ
０以下の重量Ｗ、になるよう秤り取り、且つその差Ｗ’
＝Ｗ。−一、を読み取ってコントローラへ信号を発し、
コントローラはその信号に見合った時間フィーダを作動
させて、−゛に相当する量の重量調整材を金型へ自動的
に送り込む装置となされている。In addition, when weighing, a weighing machine is usually used, and the weighing machine converts SMC cut into a predetermined size to a predetermined charging weight h.
Weigh it so that the weight W is less than 0, and the difference W'
=W. -1, reads and sends a signal to the controller,
The controller is a device that operates the feeder for a time corresponding to the signal and automatically feeds an amount of weight adjustment material corresponding to -' into the mold.
本発明の成形法では、ＳＭＣよりも硬化時間の短い材料
を、厚肉部に対応する型窩内に供給した後、ＳＭＣを金
型内に装入するようにしたので、厚肉部の硬化時間が短
縮され、その結果、成形サイクル時間が短縮される。In the molding method of the present invention, a material with a shorter curing time than SMC is supplied into the mold cavity corresponding to the thick-walled part, and then SMC is charged into the mold, so that the thick-walled part is hardened. The time is reduced and, as a result, the molding cycle time is reduced.
次に、本発明の実施例として、ポリエステル樹脂系ＦＲ
Ｐ浴槽の成形に例をとり、図面を参照しながら詳細に説
明する。Next, as an example of the present invention, polyester resin-based FR
Taking molding of a P bathtub as an example, detailed explanation will be given with reference to the drawings.
第１図において、ＳＭＣの原反１は表裏両面を被覆して
いるフィルム２，２を剥離されながら裁断機３へ移送さ
れ、裁断機３によって所定の寸法のＳＭＣ４に裁断され
、更に秤量機５へ移送される。秤量機５は、裁断された
ＳＭＣ４から所定の装入型ＩＷ。以下の重量を秤り取る
よう予め設定されており、秤り取られた突型１ ｙ ＋
のＳＭＣ４は、秤量機５の上で一旦待機する。In FIG. 1, a raw SMC fabric 1 is transferred to a cutting machine 3 while peeling off films 2, 2 covering both the front and back surfaces, and is cut into SMC 4 of a predetermined size by the cutting machine 3. will be transferred to. The weighing machine 5 loads a predetermined charging type IW from the cut SMC4. It is preset to weigh the following weight, and the weighed protrusion 1 y +
The SMC 4 temporarily waits on the weighing machine 5.
秤量機５はＨｏと−、の差Ｗ’＝−０−ｗＩを検出しコ
ントローラ６へ信号を送る。コントローラ６は秤量機５
より送られる重量差Ｗ″の信号を受け、フィーダ７に対
して重量差ｈ°に比例した時間駆動させる信号を送る。The weighing machine 5 detects the difference W'=-0-wI between Ho and -, and sends a signal to the controller 6. The controller 6 is the weighing machine 5
In response to the signal of the weight difference W'' sent from the feeder 7, a signal is sent to the feeder 7 to drive it for a time proportional to the weight difference h°.
フィーダ７は混練機をも兼ねており、コントローラ６か
ら送られてくる信号によって、前記の重量差割に応じて
予め設定された時間スクリュー７１が駆動し、充填材８
と樹脂９が混練されて、ＳＭＣよりも硬化時間の短い材
料１０となって、供給ロア２より押し出され、ロボット
１１により、金型の下型１２内の所定の位置に供給され
る。The feeder 7 also serves as a kneader, and a screw 71 is driven by a signal sent from the controller 6 for a preset time according to the weight difference, and the filler 8 is
and resin 9 are kneaded to form a material 10 with a shorter curing time than SMC, which is extruded from the supply lower 2 and supplied to a predetermined position in the lower die 12 of the mold by the robot 11.
なお硬化剤、必要によって促進剤も樹脂と一緒にフィー
ダ７に投入、混練されることは言うまでもない。It goes without saying that the curing agent and, if necessary, the accelerator are also added to the feeder 7 and kneaded together with the resin.
次いで、先に秤量機５によって秤り取られ、待機してい
た重量−１のＳＭＣ４が、図には示されていない装入機
によって、既に金型の下型１２内に供給されているＳＭ
Ｃよりも硬化時間の短い材料１０の上に装入され、金型
の上型１３が下りて金型が閉じ、加圧、加熱し、硬化す
ることによって成形品となる。Next, the SMC 4 weighed by the weighing machine 5 and having a waiting weight of -1 is replaced with the SM which has already been fed into the lower die 12 of the mold by a charging machine (not shown).
It is charged onto the material 10 which has a shorter curing time than C, the upper mold 13 of the mold is lowered, the mold is closed, and the molded product is formed by applying pressure, heating, and hardening.
次に、本実施例における、金型への成形原料の供給につ
いて、更に詳細に説明する。Next, the supply of the molding raw material to the mold in this example will be explained in more detail.
第２図において、下型１２は浴槽の裏面側を成形するキ
ャビティを有し、第３図に示される浴槽Ａの脚部Ｂ、Ｂ
、即ち厚肉部を成形する型窩１２１、１２１を備えてい
る。上型１３は浴槽Ａの表面側を成形するコア型である
。In FIG. 2, the lower mold 12 has a cavity for molding the back side of the bathtub, and the legs B and B of the bathtub A shown in FIG.
In other words, it is provided with mold cavities 121, 121 for molding the thick portion. The upper mold 13 is a core mold for molding the surface side of the bathtub A.
第１図、第２図において、フィーダ７の供給ロア２はロ
ボット１１に連結されており、供給ロア２より押し出さ
れた重量−′のＳＭＣより硬化時間の短い材料１０は、
設定された作動プログラムによって作動するロボッ１−
１１のアーム１１１に導かれて下型１２の１２１．１２
１の部分に供給され、次いで秤量機５上で待機中の重量
−１のＳＭＣ４が装入機によって下型１２内に装入され
る。In FIGS. 1 and 2, the supply lower 2 of the feeder 7 is connected to the robot 11, and the material 10 extruded from the supply lower 2 and having a shorter curing time than the SMC of weight -' is
A robot that operates according to a set operating program 1-
121.12 of the lower mold 12 guided by the arm 111 of 11
1, and then the SMC 4 with a weight of -1, which is waiting on the weighing machine 5, is charged into the lower mold 12 by a charging machine.
なお、供給されるＳＭＣより硬化時間の短い材料１０の
重量−°は、毎サイクルとも厚肉部を成形するに必要な
重量が確保されるよう、ＳＭＣの単位重量のバラツキを
勘案して決められている必要があり、本実施例において
は、厚肉部である脚部Ｂ、Ｂの全部と、重量調整のため
に底Ｃの一部にもこれが供給されるように、秤量機５と
コントローラ６が設定されている。The weight -° of the material 10, which has a shorter curing time than the supplied SMC, is determined by taking into account the variation in the unit weight of the SMC so that the weight necessary to mold the thick part is ensured in every cycle. In this embodiment, the weighing machine 5 and the controller are arranged so that this is supplied to all of the thick-walled legs B and B, and also to a part of the bottom C for weight adjustment. 6 is set.
また、本実施例においてＳＭＣよりも硬化時間の短い材
料１０は、不飽和ポリエステル樹脂、硬化剤としてはｔ
−ブチルパーオキシベンゾエートを用いたＳＭＣよりも
硬化時間を短縮するために、ベンゾイルパーオキサイド
もしくはラウロイルパーオキサイド、充填材として炭酸
カルシウム、珪砂および短繊維長のガラス繊維を混練し
たものを用いた。Further, in this example, the material 10 having a shorter curing time than SMC is an unsaturated polyester resin, and the curing agent is t.
- In order to shorten the curing time compared to SMC using butyl peroxybenzoate, a mixture of benzoyl peroxide or lauroyl peroxide, calcium carbonate as a filler, silica sand, and short fiber length glass fiber was used.
本発明は上記の通り構成されているので、部分的な厚肉
部の存在によって成形サイクル時間が長くなるのを防止
し、生産性を向上させることができる。Since the present invention is configured as described above, it is possible to prevent the molding cycle time from increasing due to the presence of a partially thickened portion, and to improve productivity.
【図面の簡単な説明】
第１図および第２図は本発明の一実施例を示す概略説明
図、第３図は本実施例によって成形された製品の断面図
である。
４・・・所定寸法に裁断されたＳＭＣ１５・・・秤量機
、 ６・・・コントローラ、７・・・フィーダ、
８・・・充填材、 ９・・・樹脂、１０・・・ＳＭ
Ｃよりも硬化時間の短い材料、１２・・・下型、 １
２１・・・厚肉部に対応する型窩、１３・・・上型、
Ａ・・・浴槽、
Ｂ・・・脚部、
Ｃ・・・底、BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are schematic explanatory views showing one embodiment of the present invention, and FIG. 3 is a sectional view of a product molded according to this embodiment. 4... SMC15 cut into predetermined dimensions... Weighing machine, 6... Controller, 7... Feeder,
8...Filler, 9...Resin, 10...SM
Material with shorter curing time than C, 12...lower mold, 1
21...Mold cavity corresponding to the thick part, 13...Upper mold, A...Bathtub, B...Legs, C...Bottom,
Claims (1)
成形品を成形する熱硬化性樹脂成形法であって、該ＳＭ
Ｃよりも硬化時間の短い材料を厚肉部に対応する型窩に
供給した後、ＳＭＣを金型内に装入して、加圧、加熱し
硬化させることを特徴とする熱硬化性樹脂成形法。(1) A thermosetting resin molding method in which a mold is charged with SMC and a molded product having a partially thickened part is molded, the SM
Thermosetting resin molding characterized by supplying a material with a shorter curing time than C to the mold cavity corresponding to the thick part, then inserting SMC into the mold, applying pressure, heating and curing. Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281389A JPH03142206A (en) | 1989-10-28 | 1989-10-28 | Molding method for thermosetting resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281389A JPH03142206A (en) | 1989-10-28 | 1989-10-28 | Molding method for thermosetting resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03142206A true JPH03142206A (en) | 1991-06-18 |
Family
ID=17638463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1281389A Pending JPH03142206A (en) | 1989-10-28 | 1989-10-28 | Molding method for thermosetting resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03142206A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7858494B2 (en) | 2005-08-25 | 2010-12-28 | Sumco Corporation | Laminated substrate manufacturing method and laminated substrate manufactured by the method |
| WO2020031919A1 (en) * | 2018-08-08 | 2020-02-13 | 株式会社イノアックコーポレーション | Fiber-reinforced resin molded article and method for manufacturing same |
-
1989
- 1989-10-28 JP JP1281389A patent/JPH03142206A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7858494B2 (en) | 2005-08-25 | 2010-12-28 | Sumco Corporation | Laminated substrate manufacturing method and laminated substrate manufactured by the method |
| WO2020031919A1 (en) * | 2018-08-08 | 2020-02-13 | 株式会社イノアックコーポレーション | Fiber-reinforced resin molded article and method for manufacturing same |
| JP2020023647A (en) * | 2018-08-08 | 2020-02-13 | 株式会社イノアックコーポレーション | Fiber reinforced resin molded body |
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