JP2003311736A - Smc laminated material - Google Patents
Smc laminated materialInfo
- Publication number
- JP2003311736A JP2003311736A JP2002121396A JP2002121396A JP2003311736A JP 2003311736 A JP2003311736 A JP 2003311736A JP 2002121396 A JP2002121396 A JP 2002121396A JP 2002121396 A JP2002121396 A JP 2002121396A JP 2003311736 A JP2003311736 A JP 2003311736A
- Authority
- JP
- Japan
- Prior art keywords
- smc
- sheet
- surface side
- flow
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＳＭＣ成形金型で
ＳＭＣ成形を行う際に使用する材料であるＳＭＣの積層
材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated material of SMC which is a material used when performing SMC molding with an SMC molding die.
【０００２】[0002]
【従来の技術】従来から、ＳＭＣ（Ｓｈｅｅｔ Ｍｏｌ
ｄｉｎｇ Ｃｏｍｐｏｕｎｄ）を成形金型により成形し
て自動車部品や水廻り住宅建材等のＳＭＣ成形品を成形
することが行われている。2. Description of the Related Art Conventionally, SMC (Sheet Mol)
Ding Compound) is molded by a molding die to mold SMC molded products such as automobile parts and water-surrounding housing building materials.
【０００３】従来柄入りのＳＭＣ成形品において、裏面
にリム等の突部を有するものがある。このようなＳＭＣ
成形品を表面側金型５と裏面側金型６とよりなるＳＭＣ
成形金型７により成形する場合、図５に示すように、裏
面側金型６のリム形成用凹部６ａにおいて成形中の材料
流動が変化するため、図５のＡで示す部分に柄の寄りが
生じ、この結果、成形されたＳＭＣ成形品の表面に柄が
寄った部分ができて意匠上問題となっていた。図中１０
はＳＭＣ成形材料である。Among conventional SMC molded products with a pattern, there is one having a protrusion such as a rim on the back surface. Such SMC
The molded product is an SMC consisting of a front side mold 5 and a back side mold 6.
In the case of molding with the molding die 7, as shown in FIG. 5, the material flow during molding changes in the rim forming recess 6a of the back side die 6, so that the pattern deviates to the portion indicated by A in FIG. As a result, a pattern was formed on the surface of the molded SMC molded product, which was a design problem. 10 in the figure
Is an SMC molding material.
【０００４】また、表面側と裏面側とに種類の違うＳＭ
Ｃシートを重ねてＳＭＣ成形金型によりＳＭＣ成形品を
成形すると、ＳＭＣ成形品の構造の複雑な箇所におい
て、成形中の材料流動が複雑になり、裏面側のＳＭＣシ
ートの材料が表面側に出てくるという問題があった。こ
のため、裏面側のＳＭＣシートとしても低価格品を使用
することができなかった。Also, different types of SM are used on the front side and the back side.
When the C sheets are stacked and the SMC molded product is molded by the SMC molding die, the material flow during molding becomes complicated at the complicated part of the structure of the SMC molded product, and the material of the SMC sheet on the back side appears on the front side. There was a problem of coming. Therefore, a low-priced product could not be used as the back side SMC sheet.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記の点に鑑
みてなされたものであり、ＳＭＣ成形品が複雑な構造の
ものであっても、表面側の材料流動が裏面側の材料流動
の影響を受け難くすることができ、表面側の柄が寄って
見えたり、裏面側のＳＭＣシートの材料が表面側に出て
くるといったような現象が生じないＳＭＣの積層材を提
供することを課題とするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and even if the SMC molded product has a complicated structure, the material flow on the front surface side is the same as that on the back surface side. An object of the present invention is to provide an SMC laminated material which can be made less susceptible to influences and in which a phenomenon such as a pattern on the front surface side approaching or the material of the SMC sheet on the back surface side does not appear on the front surface side occurs. It is what
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明に係るＳＭＣの積層材は、表面側のＳＭＣシー
ト１と裏面側のＳＭＣシート２との間に、成形時の材料
の流動を表面側と裏面側とに遮るための中間シート３を
設けて成ることを特徴とするものである。このような構
成とすることで、中間シートが成形中の材料流動を表面
側と裏面側とに分け、裏面にリム等の突部がある構造の
ＳＭＣ成形品を成形するに当たって、裏面側の材料流動
が乱れても、表面側の材料流動はその影響を受けないよ
うにできるＳＭＣ成形品を成形するための材料であるＳ
ＭＣの積層材８を提供することができるものである。[MEANS FOR SOLVING THE PROBLEMS] In order to solve the above problems, a laminated material of SMC according to the present invention has a material flow during molding between an SMC sheet 1 on the front surface side and an SMC sheet 2 on the back surface side. It is characterized in that an intermediate sheet 3 for shielding the front surface side and the back surface side is provided. With such a configuration, the material flow on the back surface side is divided when the intermediate sheet divides the material flow during molding into the front surface side and the back surface side, and the SMC molded product having a protrusion such as a rim on the back surface is molded. Even if the flow is disturbed, the material flow on the surface side can be prevented from being affected by it, which is a material for forming an SMC molded product.
The MC laminated material 8 can be provided.
【０００７】また、中間シート３がガラス繊維又はポリ
スチレン繊維の不織布の単独又は組み合わせにより形成
してあることが好ましい。このような構成とすること
で、材料の成形流動時に破断することがなく、また、成
形終了時に材料がガラス繊維又はポリスチレン繊維の不
織布に含浸して強度の強いＳＭＣ成形品を成形すること
ができるものである。Further, it is preferable that the intermediate sheet 3 is formed of a non-woven fabric of glass fiber or polystyrene fiber, either alone or in combination. With such a structure, the material does not break during molding flow, and at the end of molding, the material can be impregnated into a non-woven fabric of glass fiber or polystyrene fiber to mold a strong SMC molded product. It is a thing.
【０００８】また、中間シート３がポリスチレン繊維の
不織布の単独又はポリスチレン繊維の不織布とガラス繊
維の不織布との組み合わせにより形成してあり、ポリス
チレン繊維の不織布の目付量が５０〜６００ｇ／ｍ2で
あることが好ましい。このような構成とすることで、材
料の成形流動時に破断することがなく、また、成形終了
時に材料がガラス繊維の不織布又はポリスチレン繊維の
不織布に含浸するのに最適な条件とすることができるも
のである。The intermediate sheet 3 is formed of a polystyrene fiber non-woven fabric alone or a combination of a polystyrene fiber non-woven fabric and a glass fiber non-woven fabric, and the polystyrene fiber non-woven fabric has a basis weight of 50 to 600 g / m 2 . It is preferable. With such a structure, the material does not break at the time of molding and flowing, and the optimum condition can be set for impregnating the glass fiber nonwoven fabric or the polystyrene fiber nonwoven fabric with the material at the end of molding. Is.
【０００９】また、表面側のＳＭＣシート１及び裏面側
のＳＭＣシート２に柄が入っていることが好ましい。こ
のような構成とすることで、表面側の柄が正確に表現さ
れるＳＭＣ成形品を成形することができるものである。Further, it is preferable that the SMC sheet 1 on the front surface side and the SMC sheet 2 on the back surface side have a pattern. With such a configuration, it is possible to mold an SMC molded product in which the handle on the front surface side is accurately expressed.
【００１０】また、表面側のＳＭＣシート１のガラス繊
維の含有率よりも裏面側ＳＭＣシート２のガラス繊維の
含有率が高いことが好ましい。このような構成とするこ
とで、表面側の平滑性、光沢性を上げながら全体として
強度を保持した成形品を成形することができるものであ
る。Further, it is preferable that the glass fiber content of the back side SMC sheet 2 is higher than the glass fiber content rate of the front side SMC sheet 1. With such a configuration, it is possible to mold a molded product that maintains the strength as a whole while improving the smoothness and glossiness on the surface side.
【００１１】また、表面側のＳＭＣシート１の粘度を裏
面側のＳＭＣシート２の粘度より低くしてあることが好
ましい。このような構成とすることで、成形中の流動端
末部で裏面側のＳＭＣシート２が表面側のＳＭＣシート
１に進出してくるのを防ぐことができるものである。Further, it is preferable that the viscosity of the SMC sheet 1 on the front surface side is lower than that of the SMC sheet 2 on the back surface side. With such a configuration, it is possible to prevent the SMC sheet 2 on the back surface side from advancing to the SMC sheet 1 on the front surface side at the flow end portion during molding.
【００１２】また、中間シート３が複数枚のシート４を
積層して構成し、複数枚のシート４のうち両側のシート
４ａ間に介在するシート４を軟質シート４ｂとすること
が好ましい。このような構成とすることで、裏面側のＳ
ＭＣシート２の流動に変化がある場合、軟質シート４ｂ
が緩衝材として働き、表面側のＳＭＣシート１の流動を
より安定させることができるものである。It is preferable that the intermediate sheet 3 is formed by laminating a plurality of sheets 4, and the sheet 4 interposed between the sheets 4a on both sides of the plurality of sheets 4 is a soft sheet 4b. With such a configuration, the S on the back side is
When there is a change in the flow of the MC sheet 2, the soft sheet 4b
Acts as a cushioning material and can further stabilize the flow of the SMC sheet 1 on the front surface side.
【００１３】また、軟質シート４ａが、表面側のＳＭＣ
シート１や裏面側のＳＭＣシート２よりも粘度が低いか
又はガラス繊維の含有率が低いＳＭＣシートであること
が好ましい。このような構成とすることで、裏面側のＳ
ＭＣシート２の流動に変化がある場合、軟質シート４が
緩衝材として働き、表面側のＳＭＣシート１の流動をよ
りいっそう安定させることができるものである。Further, the soft sheet 4a is the SMC on the front side.
It is preferable that the SMC sheet has a lower viscosity or a lower glass fiber content than the sheet 1 and the SMC sheet 2 on the back surface side. With such a configuration, the S on the back side is
When there is a change in the flow of the MC sheet 2, the soft sheet 4 acts as a cushioning material and can further stabilize the flow of the SMC sheet 1 on the front surface side.
【００１４】[0014]
【発明の実施の形態】以下、本発明を添付図面に示す実
施形態に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.
【００１５】ＳＭＣ成形品を図１に示すように表面側金
型５と裏面側金型６とよりなるＳＭＣ成形金型７により
成形する際に、表面側金型５にセットするためのＳＭＣ
の積層材８は、表面側のＳＭＣシート１と裏面側のＳＭ
Ｃシート２との間に、成形時の材料の流動を表面側と裏
面側とに遮るための中間シート３を設けて構成してあ
る。When the SMC molded product is molded by the SMC molding mold 7 including the front surface side mold 5 and the back surface side mold 6 as shown in FIG. 1, the SMC for setting in the front surface side mold 5 is used.
The laminated material 8 is a SMC sheet 1 on the front side and an SM on the back side.
An intermediate sheet 3 is provided between the C sheet 2 and the C sheet 2 to block the flow of the material during molding between the front surface side and the back surface side.
【００１６】しかして、図１のように表面側金型５上に
本発明のＳＭＣの積層材８をセットしてＳＭＣ成形金型
７を型締めして成形することでＳＭＣ成形品を成形する
のであるが、ＳＭＣ成形金型７内で材料が流動する際、
図２に示すように、中間シート３が成形中の材料流動を
表面側と裏面側とに分け、裏面にリム等の突部がある構
造のＳＭＣ成形品を成形するに当たって、裏面側金型６
のリム形成用凹部６ａにおいて裏面側の材料流動が乱れ
ても、表面側の材料流動はその影響を受けないようにで
きるものである。図中矢印イは裏面側のＳＭＣシート２
が流動化した裏面側のＳＭＣ材料１０ａの流動を示し、
矢印ロは表面側のＳＭＣシート１が流動化した表面側の
ＳＭＣ材料１０ｂの流動を示している。このように、中
間シート３が成形中の材料流動を表面側と裏面側とに分
け、裏面にリム等の突部がある構造のＳＭＣ成形品を成
形するに当たって、裏面側の材料流動が乱れても、表面
側の材料流動はその影響を受けることがなくて、ひけが
生じたりせず、また、柄入りの場合には表面側において
裏面側の材料流動の乱れに影響されて柄が片寄るという
現象が生じることがなくて均一に柄が分布したＳＭＣ成
形品を成形することができるものである。また、裏面側
のＳＭＣシート２を低価格品とすることも可能で、この
場合には表面側の意匠性を維持しながら裏面側のＳＭＣ
シート２の低価格化が図れてコストダウンを図ることも
可能となるものである。Thus, as shown in FIG. 1, the SMC laminated material 8 of the present invention is set on the front surface side mold 5 and the SMC molding mold 7 is clamped and molded to form an SMC molded product. However, when the material flows in the SMC molding die 7,
As shown in FIG. 2, when the intermediate sheet 3 divides the material flow during molding into a front surface side and a back surface side, and a back surface side mold 6
Even if the material flow on the back surface side is disturbed in the rim forming recess 6a, the material flow on the front surface side can be prevented from being affected. In the figure, arrow a is the SMC sheet 2 on the back side.
Shows the flow of the SMC material 10a on the back side which is fluidized,
The arrow B indicates the flow of the SMC material 10b on the surface side where the SMC sheet 1 on the surface side is fluidized. Thus, when the intermediate sheet 3 divides the material flow during molding into the front surface side and the back surface side, and when molding an SMC molded product having a structure in which a protrusion such as a rim is formed on the back surface, the material flow on the back surface side is disturbed. However, the material flow on the front side is not affected, and sink marks do not occur, and in the case of a pattern, the pattern is biased on the front side due to the disturbance of the material flow on the back side. It is possible to mold an SMC molded product in which a pattern is uniformly distributed without causing a phenomenon. It is also possible to make the back side SMC sheet 2 a low-priced product, and in this case, the back side SMC sheet is maintained while maintaining the design side of the front side.
The cost of the seat 2 can be reduced and the cost can be reduced.
【００１７】上記のようにしてＳＭＣ成形品を成形する
のであるが、表面側のＳＭＣシート１及び裏面側のＳＭ
Ｃシート２はあらかじめ柄がコンパウンドに練り込んで
ある「柄入りＳＭＣ」である。表面側のＳＭＣシート１
と裏面側のＳＭＣシート２との間に挟まれる中間シート
３はガラス繊維又はポリスチレン繊維等の不織布の単独
又は組み合わせにより構成されたものである。なお、本
発明において表面側のＳＭＣシート１と裏面側のＳＭＣ
シート２とを中間シート３で仕切っているので、裏面側
のＳＭＣシート２としては柄が入っていないものであっ
てもよい。The SMC molded product is molded as described above. The SMC sheet 1 on the front surface side and the SM on the back surface side are formed.
The C sheet 2 is a “SMC with a pattern” in which the pattern is kneaded in the compound in advance. Front side SMC sheet 1
The intermediate sheet 3 sandwiched between the SMC sheet 2 and the back side SMC sheet 2 is made of a non-woven fabric such as glass fiber or polystyrene fiber, or a combination thereof. In the present invention, the SMC sheet 1 on the front surface side and the SMC sheet on the back surface side
Since the sheet 2 and the intermediate sheet 3 are separated from each other, the SMC sheet 2 on the back surface side may not have a pattern.
【００１８】ここで、ガラス繊維又はポリスチレン繊維
の不織布の目付量は５０〜６００ｇ／ｍ2で、材料の成
形流動時に破断することなく、かつ成形終了時には材料
が含浸する量にする必要がある。Here, the basis weight of the non-woven fabric of glass fiber or polystyrene fiber is 50 to 600 g / m 2 , and it is necessary to make the amount such that the material does not break during molding flow and the material is impregnated at the end of molding.
【００１９】表面側ＳＭＣシート１，裏面側のＳＭＣシ
ート２としては、例えば、樹脂分３０％、ガラス２５
％、充填材４５％の配合割合のものであり、柄材は樹脂
分に混練、分散している。As the front side SMC sheet 1 and the back side SMC sheet 2, for example, resin content 30%, glass 25
%, And the filler is 45%, and the handle material is kneaded and dispersed in the resin component.
【００２０】上記例は表面側ＳＭＣシート１，裏面側の
ＳＭＣシート２として同じ組成のものを用いたが、表面
側のＳＭＣシート１と裏面側のＳＭＣシート２との種類
を変えてもよい。表面側のＳＭＣシート１と裏面側のＳ
ＭＣシート２との種類を変える場合は、粘度やガラス繊
維の含有率のいずれか一方又は両方を変えるものであ
る。In the above example, the front side SMC sheet 1 and the back side SMC sheet 2 have the same composition, but the types of the front side SMC sheet 1 and the back side SMC sheet 2 may be changed. SMC sheet 1 on the front side and S on the back side
When the type of the MC sheet 2 is changed, one or both of the viscosity and the content rate of the glass fiber are changed.
【００２１】表面側のＳＭＣシート１と裏面側のＳＭＣ
シート２との粘度を変える場合、表面側のＳＭＣシート
１の粘度を裏面側のＳＭＣシート２の粘度より低くす
る。例えば、表面側のＳＭＣシート１の粘度を５万〜３
０万ポイズ、裏面側のＳＭＣシート２を２０万〜５０万
ポイズとする。ここで、５万ポイズ以下の場合、ＳＭＣ
の裁断や表面側金型５上へのセット時にべたつきのため
に樹脂分が手に付着するため、ハンドレ性に問題がでる
ので好ましくない。また、５０万ポイズ以上の場合、材
料が硬すぎて成形時に材料をＳＭＣ成形金型７内に隅々
まで充填することができず、欠肉を生じる場合があり、
また、ＳＭＣ成形金型７の締め切り時間が増えるため、
材料の流動途中で硬化が始まる「プレゲル」現象が生じ
るので好ましくない。このように、表面側のＳＭＣシー
ト１の粘度を裏面側のＳＭＣシート２の粘度より低くす
ることで、成形中の流動端末部で裏面側のＳＭＣシート
２が表面側のＳＭＣシート１に進出してくるのを防ぐこ
とができる。SMC sheet 1 on the front side and SMC on the back side
When changing the viscosity with the sheet 2, the viscosity of the front side SMC sheet 1 is made lower than the viscosity of the back side SMC sheet 2. For example, if the viscosity of the SMC sheet 1 on the front surface side is 50,000 to 3
0,000 poise, SMC sheet 2 on the back side is 200,000-500,000 poise. Here, if it is less than 50,000 poise, SMC
Since the resin component adheres to the hand due to stickiness during cutting or setting on the front surface side mold 5, there is a problem in handleability, which is not preferable. Further, when the porosity is 500,000 poise or more, the material is too hard to fill every corner of the SMC molding die 7 at the time of molding, which may result in lack of thickness.
Moreover, since the deadline time of the SMC molding die 7 increases,
It is not preferable because a "pre-gel" phenomenon occurs in which curing starts during the flow of the material. Thus, by making the viscosity of the front side SMC sheet 1 lower than the viscosity of the back side SMC sheet 2, the back side SMC sheet 2 advances to the front side SMC sheet 1 at the flow end portion during molding. Can be prevented from coming.
【００２２】また、表面側のＳＭＣシート１と裏面側の
ＳＭＣシート２とのガラス繊維の含有率を変える場合、
表面側のＳＭＣシート１のガラス繊維の含有率よりも裏
面側ＳＭＣシート２のガラス繊維の含有率を高くする。
このように、表面側のＳＭＣシート１のガラス繊維の含
有率よりも裏面側ＳＭＣシート２のガラス繊維の含有率
を高くすることで、表面側の平滑性、光沢性を上げなが
ら全体として強度を保持した成形品を成形することがで
きる。この場合、表面側の平滑性、光沢性を上げること
を目的とするものの場合、必ずしも柄入りＳＭＣを使用
しなくてもよいものである。When the glass fiber contents of the front side SMC sheet 1 and the back side SMC sheet 2 are changed,
The glass fiber content of the back side SMC sheet 2 is made higher than the glass fiber content of the front side SMC sheet 1.
In this way, by increasing the content rate of the glass fibers of the back side SMC sheet 2 to be higher than the content rate of the glass fibers of the front side SMC sheet 1, the smoothness and glossiness of the front side are increased and the strength as a whole is increased. The held molded product can be molded. In this case, if the purpose is to improve the smoothness and glossiness of the surface side, the patterned SMC is not necessarily used.
【００２３】また、図３に示すように、複数枚のシート
４を積層して中間シート３を構成し、複数枚のシート４
のうち両側の不織布よりなるシート４ａ間に介在するシ
ート４を軟質シート４ｂとする。このように、複数枚の
シート４を積層して中間シート３を構成し、複数枚のシ
ート４のうち両側のシート４ａ間に介在するシート４を
軟質シート４ｂとする。これにより、両側のシート４ａ
の間に軟質シート４ｂを介在させるものとなり、軟質シ
ート４ｂが裏面側のＳＭＣシート２の流動に変化がある
場合、図４のように緩衝材として働き、表面側のＳＭＣ
シート１の流動をより安定させることができるものであ
る。Further, as shown in FIG. 3, a plurality of sheets 4 are laminated to form an intermediate sheet 3, and the plurality of sheets 4 are
Among these, the sheet 4 interposed between the sheets 4a made of nonwoven fabric on both sides is referred to as a soft sheet 4b. In this way, the plurality of sheets 4 are laminated to form the intermediate sheet 3, and the sheet 4 interposed between the sheets 4a on both sides of the plurality of sheets 4 is the soft sheet 4b. As a result, the sheets 4a on both sides are
When the soft sheet 4b changes in the flow of the SMC sheet 2 on the back surface side, the soft sheet 4b acts as a cushioning material as shown in FIG.
The flow of the sheet 1 can be further stabilized.
【００２４】軟質シート４ｂは、表面側のＳＭＣシート
１や裏面側のＳＭＣシート２よりも粘度が低いか又はガ
ラス繊維の含有率が低いＳＭＣシートとする。ここで、
軟質シート４ｂはガラス繊維の含有量が１〜２０％、コ
ンパウンド粘度が５〜３０万ポイズである。上記構成と
することで、軟質シート４が裏面側のＳＭＣシート２の
流動に変化がある場合、緩衝材として働き、表面側のＳ
ＭＣシート１の流動をよりいっそう安定させることがで
きるものである。The soft sheet 4b is an SMC sheet having a lower viscosity or a lower glass fiber content than the SMC sheet 1 on the front surface side or the SMC sheet 2 on the back surface side. here,
The soft sheet 4b has a glass fiber content of 1 to 20% and a compound viscosity of 50,000 to 300,000 poises. With the above configuration, when the soft sheet 4 changes in the flow of the SMC sheet 2 on the back surface side, the soft sheet 4 acts as a cushioning material, and
The flow of the MC sheet 1 can be further stabilized.
【００２５】[0025]
【発明の効果】上記のように本発明の請求項１記載の発
明にあっては、表面側のＳＭＣシートと裏面側のＳＭＣ
シートとの間に、成形時の材料の流動を表面側と裏面側
とに遮るための中間シートを設けてあるので、中間シー
トが成形中の材料流動を表面側と裏面側とに分け、裏面
にリム等の突部がある構造のＳＭＣ成形品を成形するに
当たって、裏面側の材料流動が乱れても、表面側の材料
流動はその影響を受けないようにできて、表面側にひけ
が生じるのを防止したり、また、柄入りＳＭＣを用いた
場合においては表面側において柄が片寄るような現象が
生じなくて均一に柄が分布したＳＭＣ成形品を成形する
ことができ、また、裏面側のＳＭＣシートを低価格品と
することも可能で、この場合には表面側の意匠性を維持
しながら裏面側のＳＭＣシートの低価格化が図れてコス
トダウンを図ることも可能となるものである。As described above, in the invention according to claim 1 of the present invention, the front side SMC sheet and the back side SMC sheet are provided.
Since an intermediate sheet is provided between the sheet and the sheet to block the flow of material during molding between the front surface side and the back surface side, the intermediate sheet divides the material flow during molding into the front surface side and the back surface side. When molding an SMC molded product having a structure with a protrusion such as a rim, even if the material flow on the back surface side is disturbed, the material flow on the front surface side can be prevented from being affected, and a sink mark occurs on the surface side. Can be prevented, and when SMC with a pattern is used, a phenomenon in which the pattern shifts on the front surface side does not occur, and an SMC molded product in which the pattern is evenly distributed can be molded. It is also possible to make the SMC sheet of the low price product, and in this case, it is possible to reduce the price of the SMC sheet of the back surface side while maintaining the designability of the front surface side and to reduce the cost. is there.
【００２６】また、請求項２記載の発明にあっては、上
記請求項１記載の発明の効果に加えて、中間シートがガ
ラス繊維又はポリスチレン繊維の不織布の単独又は組み
合わせにより形成してあるので、材料の成形流動時に破
断することがなく、また、成形終了時に材料がガラス繊
維又はポリスチレン繊維の不織布に含浸して強度の強い
ＳＭＣ成形品を成形することができるものである。According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the intermediate sheet is formed of a non-woven fabric of glass fiber or polystyrene fiber, alone or in combination, The material does not break during the molding flow of the material, and at the end of molding, the material can be impregnated into a non-woven fabric of glass fiber or polystyrene fiber to mold a strong SMC molded product.
【００２７】また、請求項３記載の発明にあっては上記
請求項１記載の発明の効果に加えて、中間シートがポリ
スチレン不織布の単独又はポリスチレン繊維の不織布と
ガラス繊維の不織布との組み合わせにより形成してあ
り、ポリスチレン繊維の不織布の目付量が５０〜６００
ｇ／ｍ2であるので、材料の成形流動時に破断すること
がなく、また、成形終了時に材料がガラス繊維の不織布
又はポリスチレン繊維の不織布に含浸するのに最適な条
件とすることができるものである。According to the invention of claim 3, in addition to the effect of the invention of claim 1, the intermediate sheet is formed of a polystyrene nonwoven fabric alone or a combination of a polystyrene fiber nonwoven fabric and a glass fiber nonwoven fabric. The weight of the polystyrene fiber nonwoven fabric is 50 to 600
Since it is g / m 2 , it does not break during the molding flow of the material, and it can be the optimum condition for impregnating the glass fiber nonwoven fabric or polystyrene fiber nonwoven fabric with the material at the end of molding. is there.
【００２８】また、請求項４記載の発明にあっては、請
求項１乃至請求項３のいずれかに記載の発明の効果に加
えて、表面側のＳＭＣシート及び裏面側のＳＭＣシート
に柄が入っているので、表面側の柄が正確に表現される
ＳＭＣ成形品を成形することができるものである。Further, in the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the front side SMC sheet and the back side SMC sheet have patterns. Since it is contained, it is possible to mold an SMC molded product in which the pattern on the surface side is accurately expressed.
【００２９】また、請求項５記載の発明にあっては、上
記請求項１乃至請求項４のいずれかに記載の発明の効果
に加えて、表面側のＳＭＣシートのガラス繊維の含有率
よりも裏面側ＳＭＣシートのガラス繊維の含有率が高い
ので、表面側の平滑性、光沢性を上げながら全体として
強度を保持した成形品を成形することができるものであ
る。According to the invention of claim 5, in addition to the effect of the invention of any one of claims 1 to 4, the content of the glass fiber in the SMC sheet on the surface side is higher than that in the invention. Since the content of glass fiber in the back side SMC sheet is high, it is possible to form a molded product which maintains the strength as a whole while improving the smoothness and glossiness of the front side.
【００３０】また、請求項６記載の発明にあっては、上
記請求項１乃至請求項５のいずれかに記載の発明の効果
に加えて、表面側のＳＭＣシートの粘度を裏面側のＳＭ
Ｃシートの粘度より低くしてあるので、成形中の流動端
末部で裏面側のＳＭＣシート２が表面側のＳＭＣシート
に進出してくるのを防ぐことができるものである。According to the invention of claim 6, in addition to the effect of the invention of any one of claims 1 to 5, the viscosity of the SMC sheet on the front surface side is adjusted to the SM of the back surface side.
Since the viscosity is lower than that of the C sheet, it is possible to prevent the SMC sheet 2 on the back side from advancing to the SMC sheet on the front side at the flow end portion during molding.
【００３１】また、請求項７記載の発明にあっては、上
記請求項１乃至請求項６のいずれかに記載の発明の効果
に加えて、中間シートを複数枚のシートを積層して構成
し、複数枚のシートのうち両側のシート間に介在するシ
ートを軟質シートとしてあるので、裏面側のＳＭＣシー
トの流動に変化がある場合、軟質シートが緩衝材として
働き、表面側のＳＭＣシートの流動をより安定させるこ
とができるものである。Further, in the invention described in claim 7, in addition to the effect of the invention described in any one of claims 1 to 6, an intermediate sheet is formed by laminating a plurality of sheets. Since the sheet interposed between the sheets on both sides of the plurality of sheets is a soft sheet, when there is a change in the flow of the back side SMC sheet, the soft sheet acts as a cushioning material and the flow of the front side SMC sheet Can be made more stable.
【００３２】また、請求項８記載の発明にあっては、上
記請求項７記載の発明の効果に加えて、軟質シートが、
表面側のＳＭＣシートや裏面側のＳＭＣシートよりも粘
度が低いか又はガラス繊維の含有率が低いＳＭＣシート
であるので、裏面側のＳＭＣシートの流動に変化がある
場合、軟質シートが緩衝材として働き、表面側のＳＭＣ
シートの流動をよりいっそう安定させることができるも
のである。In addition, in the invention described in claim 8, in addition to the effect of the invention described in claim 7, the soft sheet is
Since the SMC sheet has a lower viscosity or a lower glass fiber content than the SMC sheet on the front surface side or the SMC sheet on the back surface side, when the flow of the SMC sheet on the back surface side changes, the soft sheet serves as a cushioning material. Working, front side SMC
The sheet flow can be further stabilized.
【図１】本発明のＳＭＣの積層材をＳＭＣ成形金型にセ
ットする状態を示す分解断面図である。FIG. 1 is an exploded sectional view showing a state in which an SMC laminated material of the present invention is set in an SMC molding die.
【図２】同上の成形中におけるＳＭＣ材料の流動を説明
する説明図である。FIG. 2 is an explanatory view illustrating the flow of SMC material during molding in the above.
【図３】同上の中間シートの一例を示す分解断面図であ
る。FIG. 3 is an exploded sectional view showing an example of the intermediate sheet of the above.
【図４】同上の成形中におけるＳＭＣ材料の流動を説明
する説明図である。FIG. 4 is an explanatory view illustrating the flow of the SMC material during the above molding.
【図５】従来例の成形中におけるＳＭＣ材料の流動を説
明する説明図である。FIG. 5 is an explanatory diagram illustrating the flow of the SMC material during molding in the conventional example.
１ 表面側のＳＭＣシート ２ 裏面側のＳＭＣシート ３ 中間シート ４ シート ５ 軟質シート 1 SMC sheet on the front side 2 SMC sheet on the back side 3 intermediate sheets 4 seats 5 Soft sheet
フロントページの続き Ｆターム(参考） 4F072 AA02 AB04 AB09 AB34 AG03 AG16 AK05 AL02 AL09 AL17 4F204 AD04 AD06 AD16 AD20 AF00 AG03 AH17 AH46 FA01 FB01 FB20 FB22 FF50 FG02 FJ30 FN04 Continued front page F-term (reference) 4F072 AA02 AB04 AB09 AB34 AG03 AG16 AK05 AL02 AL09 AL17 4F204 AD04 AD06 AD16 AD20 AF00 AG03 AH17 AH46 FA01 FB01 FB20 FB22 FF50 FG02 FJ30 FN04
Claims (8)
シートとの間に、成形時の材料の流動を表面側と裏面側
とに遮るための中間シートを設けて成ることを特徴とす
るＳＭＣの積層材。1. A front side SMC sheet and a back side SMC
A laminated material of SMC, characterized in that an intermediate sheet is provided between the sheet and the front side and the back side to block the flow of the material at the time of molding.
ン繊維の不織布の単独又は組み合わせにより形成してあ
ることを特徴とする請求項１記載のＳＭＣの積層材。2. The SMC laminated material according to claim 1, wherein the intermediate sheet is formed of a non-woven fabric of glass fibers or polystyrene fibers, either alone or in combination.
又はポリスチレン繊維の不織布とガラス繊維の不織布と
の組み合わせにより形成してあり、ポリスチレン繊維の
不織布の目付量が５０〜６００ｇ／ｍ2であることを特
徴とする請求項１記載のＳＭＣの積層材。3. The intermediate sheet is formed of a polystyrene nonwoven fabric alone or a combination of a polystyrene fiber nonwoven fabric and a glass fiber nonwoven fabric, and the polystyrene fiber nonwoven fabric has a basis weight of 50 to 600 g / m 2. The laminated material of SMC according to claim 1.
Ｃシートに柄が入っていることを特徴とする請求項１乃
至請求項３のいずれかに記載のＳＭＣの積層材。4. The SMC sheet on the front side and the SM on the back side
The SMC laminated material according to any one of claims 1 to 3, wherein the C sheet has a handle.
有率よりも裏面側ＳＭＣシートのガラス繊維の含有率が
高いことを特徴とする請求項１乃至請求項４のいずれか
に記載のＳＭＣの積層材。5. The SMC according to claim 1, wherein the content of the glass fiber of the back side SMC sheet is higher than the content of the glass fiber of the front side SMC sheet. Laminated material.
ＳＭＣシートの粘度より低くして成ることを特徴とする
請求項１乃至請求項５のいずれかに記載のＳＭＣの積層
材。6. The SMC laminated material according to claim 1, wherein the viscosity of the front side SMC sheet is lower than the viscosity of the back side SMC sheet.
構成し、複数枚のシートのうち両側のシート間に介在す
るシートを軟質シートとして成ることを特徴とする請求
項１乃至請求項６のいずれかに記載のＳＭＣの積層材。7. The intermediate sheet is formed by laminating a plurality of sheets, and the sheet interposed between the sheets on both sides of the plurality of sheets is a soft sheet. The laminated material of SMC according to any one of 1.
裏面側のＳＭＣシートよりも粘度が低いか又はガラス繊
維の含有率が低いＳＭＣシートであることを特徴とする
請求項７記載のＳＭＣの積層材。8. The SMC according to claim 7, wherein the soft sheet is an SMC sheet having a lower viscosity or a lower glass fiber content than the front side SMC sheet or the back side SMC sheet. Laminated material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002121396A JP3826836B2 (en) | 2002-04-23 | 2002-04-23 | SMC laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002121396A JP3826836B2 (en) | 2002-04-23 | 2002-04-23 | SMC laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003311736A true JP2003311736A (en) | 2003-11-05 |
| JP3826836B2 JP3826836B2 (en) | 2006-09-27 |
Family
ID=29537342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002121396A Expired - Lifetime JP3826836B2 (en) | 2002-04-23 | 2002-04-23 | SMC laminate |
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| Country | Link |
|---|---|
| JP (1) | JP3826836B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008080582A (en) * | 2006-09-26 | 2008-04-10 | Matsushita Denko Bath & Life Kk | Molding method for frp molded article having pattern |
| JP2008266530A (en) * | 2007-04-24 | 2008-11-06 | Matsushita Denko Bath & Life Kk | Sheet molding compound and method for molding the same |
| JP2015199221A (en) * | 2014-04-04 | 2015-11-12 | パナソニックＩｐマネジメント株式会社 | Method for manufacturing smc molding |
| WO2018101245A1 (en) * | 2016-11-29 | 2018-06-07 | 三菱ケミカル株式会社 | Fiber-reinforced resin molded article and method for manufacturing fiber-reinforced resin molded article |
-
2002
- 2002-04-23 JP JP2002121396A patent/JP3826836B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008080582A (en) * | 2006-09-26 | 2008-04-10 | Matsushita Denko Bath & Life Kk | Molding method for frp molded article having pattern |
| JP2008266530A (en) * | 2007-04-24 | 2008-11-06 | Matsushita Denko Bath & Life Kk | Sheet molding compound and method for molding the same |
| JP2015199221A (en) * | 2014-04-04 | 2015-11-12 | パナソニックＩｐマネジメント株式会社 | Method for manufacturing smc molding |
| WO2018101245A1 (en) * | 2016-11-29 | 2018-06-07 | 三菱ケミカル株式会社 | Fiber-reinforced resin molded article and method for manufacturing fiber-reinforced resin molded article |
| JPWO2018101245A1 (en) * | 2016-11-29 | 2018-11-29 | 三菱ケミカル株式会社 | Fiber-reinforced resin molded product and method for producing fiber-reinforced resin molded product |
| EP3549741A4 (en) * | 2016-11-29 | 2019-12-18 | Mitsubishi Chemical Corporation | Fiber-reinforced resin molded article and method for manufacturing fiber-reinforced resin molded article |
| US11312090B2 (en) | 2016-11-29 | 2022-04-26 | Mitsubishi Chemical Corporation | Fiber-reinforced resin molded article and method for manufacturing fiber-reinforced resin molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3826836B2 (en) | 2006-09-27 |
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