JP2000265854A - Manufacture of resin molded part for automobile - Google Patents
Manufacture of resin molded part for automobileInfo
- Publication number
- JP2000265854A JP2000265854A JP11064216A JP6421699A JP2000265854A JP 2000265854 A JP2000265854 A JP 2000265854A JP 11064216 A JP11064216 A JP 11064216A JP 6421699 A JP6421699 A JP 6421699A JP 2000265854 A JP2000265854 A JP 2000265854A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- thermoplastic resin
- heat
- expandable microcapsules
- reinforced thermoplastic
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 25
- 239000011347 resin Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000003094 microcapsule Substances 0.000 claims abstract description 38
- 239000004743 Polypropylene Substances 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 23
- 239000003365 glass fiber Substances 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 14
- -1 polypropylene Polymers 0.000 claims abstract description 14
- 229920001155 polypropylene Polymers 0.000 claims abstract description 14
- 229920005992 thermoplastic resin Polymers 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 239000002775 capsule Substances 0.000 claims 1
- 238000000748 compression moulding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 abstract 1
- 239000000088 plastic resin Substances 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 8
- 239000003981 vehicle Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 3
- 229920000103 Expandable microsphere Polymers 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガラスマット強化
熱可塑性樹脂のシート（スタンパブルシート）の中に熱
膨張性マイクロカプセルを含有させたシート材を用い
て、プレスにて圧縮成形される自動車のアンダーボデー
に取り付けられるカバー類等の製造方法に係り、特に、
成形品の内部に均一分散されたマイクロバルーンによ
り、防音効果、断熱効果の優れた自動車用樹脂成形品の
製造方法を提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile which is formed by pressing a sheet material containing a thermally expandable microcapsule in a glass mat reinforced thermoplastic resin sheet (a stampable sheet). Related to a method of manufacturing covers and the like attached to the underbody of, in particular,
An object of the present invention is to provide a method for producing a resin molded article for automobiles having excellent soundproofing and heat insulating effects by using microballoons uniformly dispersed inside the molded article.
【０００２】[0002]
【従来の技術】従来、自動車用のアンダーボデー周り
の、エンジンアンダーカバーとかトランスミッションカ
バーを生産するのに次の方法が採られていた。 (1) 比較的悪路走行等の機会の少ない乗用車系の車両
においては、アンダー周りの空力抵抗低減のために車両
の下側をフラット化する事が行われている。そしてこれ
らの部品は、空力抵抗低減の目的のほかに外部からの
水、塵埃の侵入を防ぐ目的も有している。そのため、さ
ほど強度を必要としないから一般的には、板厚１．５〜
２．０ｍｍ程度のポリプロピレン製のインジェクション
成形品が使用されている。 (2) これに比べて、ＲＶ車、トラック等に用いられる
鉄板製のカバーは重量が非常に重くなっている。例え
ば、ポリプロピレンにガラス長繊維を含有したカバーも
ガラス長繊維を多く含む事から材料自体の比重が大きく
なり１．３〜１．５となっていた。しかも、強度上ある
程度の板厚、たとえば２〜３ｍｍを必要とするため、重
量が乗用車用のインジェクション成形品にべて１．５〜
２倍になっている。2. Description of the Related Art Hitherto, the following method has been employed for producing an engine undercover or a transmission cover around an underbody for an automobile. (1) In a vehicle of a passenger car system that has relatively few opportunities such as running on a rough road, the lower side of the vehicle is flattened to reduce aerodynamic drag around the under. These parts have the purpose of preventing water and dust from entering from outside in addition to the purpose of reducing aerodynamic drag. For this reason, it does not require much strength.
An injection molded article made of polypropylene having a size of about 2.0 mm is used. (2) On the other hand, iron plate covers used for RVs, trucks and the like are very heavy. For example, since a cover containing long glass fibers in polypropylene also contains a large amount of long glass fibers, the specific gravity of the material itself is increased to 1.3 to 1.5. In addition, since a certain thickness, for example, 2 to 3 mm, is required in terms of strength, the weight of the injection molded product for passenger cars is 1.5 to 1.5.
Doubled.
【０００３】一方、熱膨張性マイクロカプセルを使用し
て射出成形物を得る方法については、特開平９−２３４
７５８号公報に記載されている。その要旨は、射出成形
可能な高分子材料と熱可塑性樹脂熱膨張性微小球（また
はその予備膨張物）を用いて射出成形を行うことによ
り、微小な球体のバルーンが高分子材料からなるマトリ
クス中に３次元的に、均一に分散配置した発泡射出成形
物を製造する方法である。On the other hand, a method for obtaining an injection-molded product by using a heat-expandable microcapsule is disclosed in JP-A-9-234.
No. 758. The gist is that injection molding is performed using a polymer material that can be injection-molded and thermoplastic resin heat-expandable microspheres (or a pre-expanded product thereof), so that microsphere balloons are formed in a matrix made of the polymer material. This is a method for producing a foamed injection molded article three-dimensionally and uniformly dispersed.
【０００４】すなわち、熱可塑性樹脂熱膨張性微小球
（またはその予備膨張物）を高分子材料からなるマトリ
ックス中に３次元的に均一に分散配置した発泡射出成形
物を製造する方法について、その一般的利用方法が記載
されているのみであり、それを使用して具体的な技術的
優位性をどう出したかについては一切記載させていな
い。また、本発明のようなスタンピング成形に熱膨張性
マイクロカプセルを利用する技術については一切触れら
れていない。That is, a method for producing a foamed injection molded product in which thermoplastic resin thermally expandable microspheres (or a pre-expanded product thereof) are uniformly and three-dimensionally dispersed in a matrix made of a polymer material is generally used. It merely describes how to use it purposely, and does not describe how to use it to achieve specific technical advantages. In addition, there is no mention of a technique of using thermally expandable microcapsules for stamping molding as in the present invention.
【０００５】[0005]
【発明が解決しようとする課題】しかし、ＲＶ車、トラ
ック等に用いられる鉄板製のカバーは重量が非常に重
い。また、樹脂製であってもポリプロピレンにガラス長
繊維を含有したカバーでは、ガラス長繊維を多く含むこ
とから材料自体の比重が大きくなり１．３〜１．５とな
っていた。しかも強度上ある程度の板厚、たとえば２〜
３ｍｍを必要とするため、重量が乗用車用のインジェク
ション成形品に比べて１．５〜２倍になっている。However, iron plate covers used for RVs, trucks and the like are very heavy. In addition, even if the cover is made of resin, the specific gravity of the material itself is increased to 1.3 to 1.5 because the cover containing a long glass fiber in polypropylene contains a large amount of the long glass fiber. Moreover, a certain thickness in terms of strength, for example, 2 to 2
Since 3 mm is required, the weight is 1.5 to 2 times that of an injection molded product for a passenger car.
【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
本発明は、ガラス繊維の布と、ＰＰ（ポリプロピレン）
等の熱可塑性樹脂と共に熱膨張性マスターバッチを含浸
させたたシート(３)とをシート成形によってガラスマッ
ト強化熱可塑性樹脂シート(４)に成形し、いわゆるガラ
スマット強化熱可塑性樹脂シートを、あらかじめ加熱機
で加熱、軟化させるか若しくは金型のキャビティー内で
加熱、軟化させた後、所定のクリアランスまでプレス成
形することによって、成形品中に熱膨張性マイクロカプ
セルが膨張して形成された微細な中空球体を均一に分散
させ、軽量化と共に防音効果や断熱効果の優れた自動車
用樹脂成形品の製造方法を提供するものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a glass fiber cloth and PP (polypropylene).
A sheet (3) impregnated with a heat-expandable masterbatch together with a thermoplastic resin such as that described above is formed into a glass mat-reinforced thermoplastic resin sheet (4) by sheet molding. Heating and softening with a heater or heating and softening in a mold cavity, and then press-molding to a predetermined clearance to expand the heat-expandable microcapsules in the molded product It is intended to provide a method for manufacturing a resin molded article for automobiles, in which a hollow sphere is uniformly dispersed and reduced in weight and excellent in soundproofing and heat insulating effects.
【０００７】すなわち、第１の発明は、ガラス繊維の布
１と、ＰＰ（ポリプロピレン）等の熱可塑性樹脂と共に
熱膨張性マイクロカプセルをペレット状に加工したマス
ターバッチもしくは粉末状の熱膨張性マイクロカプセル
２を含浸させたシート３とをシート成形によってガラス
マット強化熱可塑性樹脂シート４に成形し、次いで、前
記ガラスマット強化熱可塑性樹脂シート４を、あらかじ
め加熱、軟化し含浸した熱膨張性マイクロカプセル２を
膨張させた後、これをプレス金型内にセットし、その
後、所定のクリアランスまで加圧して所望形状の成形品
を加工するに当たり、加圧成形時に一旦膨張しているマ
イクロカプセル２を圧縮し、成形品中に熱膨張性マイク
ロカプセルの膨張による微細な中空球体を均一に分散さ
せるようにした樹脂成形品を得ることを特徴とする自動
車用樹脂成形品の製造方法である。That is, the first invention relates to a masterbatch or powdery heat-expandable microcapsules obtained by processing heat-expandable microcapsules into pellets together with a glass fiber cloth 1 and a thermoplastic resin such as PP (polypropylene). 2 is formed into a glass mat reinforced thermoplastic resin sheet 4 by sheet molding, and then the glass mat reinforced thermoplastic resin sheet 4 is preheated, softened, and impregnated into a thermally expandable microcapsule 2. After expanding the microcapsules 2, the microcapsules 2, which have been expanded during the press molding, are compressed in order to process a molded product having a desired shape by pressing the mold to a predetermined clearance. , Resin that uniformly disperses fine hollow spheres due to expansion of thermally expandable microcapsules in molded products It is a manufacturing method of a motor vehicle for a resin molded product, characterized in that to obtain molded products.
【０００８】また、第２の発明は、ガラス繊維の布１
と、ＰＰ（ポリプロピレン）等の熱可塑性樹脂と共に熱
膨張性マイクロカプセルをペレット状に加工したマスタ
ーバッチもしくは粉末状の熱膨張性マイクロカプセル２
を含浸させたシート３とをシート成形によってガラスマ
ット強化熱可塑性樹脂シート４に成形し、次いで、前記
ガラスマット強化熱可塑性樹脂シート４を、あらかじめ
加熱、軟化し含浸した熱膨張性マイクロカプセル２を膨
張させ、次いで、膨張した前記ガラスマット強化熱可塑
性樹脂シート４および軟質系の表皮材シート５をプレス
金型内にセットし、その後、所定のクリアランスまで加
圧して所望形状の成形品を加工するに当たり、加圧成形
時に一旦膨張しているマイクロカプセル２を圧縮し、成
形品中に熱膨張性マイクロカプセルの膨張による微細な
中空球体を均一に分散させるようにした表皮材付の樹脂
成形品を得ることを特徴とする自動車用樹脂成形品の製
造方法である。[0008] A second invention relates to a glass fiber cloth 1.
And a masterbatch or powdery heat-expandable microcapsules obtained by processing heat-expandable microcapsules into pellets together with a thermoplastic resin such as PP (polypropylene) 2
Is molded into a glass mat reinforced thermoplastic resin sheet 4 by sheet molding, and then the glass mat reinforced thermoplastic resin sheet 4 is heated, softened, and impregnated into a thermally expandable microcapsule 2. The expanded and then expanded glass mat reinforced thermoplastic resin sheet 4 and soft skin material sheet 5 are set in a press die, and then pressed to a predetermined clearance to process a molded product of a desired shape. In the meantime, a resin molded article with a skin material, in which the microcapsules 2 once expanded at the time of pressure molding are compressed to uniformly disperse fine hollow spheres due to expansion of the thermally expandable microcapsules in the molded article, is prepared. A method for producing a resin molded article for an automobile, characterized by being obtained.
【０００９】また、第３の発明は、ガラスマット強化熱
可塑性樹脂シート４を加熱、軟化し含浸した熱膨張性マ
イクロカプセル２を膨張させるのは、シート材を樹脂金
型内にセットし、このプレス金型の加熱によりおこなう
ようにしたことを特徴とする請求項１又は請求項２記載
の自動車用樹脂成形品の製造方法である。In the third invention, the glass mat reinforced thermoplastic resin sheet 4 is heated and softened to expand the impregnated thermally expandable microcapsules 2 by setting the sheet material in a resin mold. 3. The method according to claim 1, wherein the pressing is performed by heating a press die.
【００１０】[0010]
【発明の実施の形態】本発明の実施例に基づいて、その
作用・効果について説明する。本発明に使用するガラス
マット強化熱可塑性樹脂シート４（スタンパブルシー
ト）は、ガラス繊維の布１と、ＰＰ（ポリプロピレン）
等の熱可塑性樹脂と共に熱膨張性マイクロカプセルをペ
レット状に加工したマスターバッチもしくは粉末状の熱
膨張性マイクロカプセル２を含浸させたシート３とを、
加熱・圧縮・均厚化する、いわゆるシート成形によって
作られている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation and effects of the present invention will be described based on embodiments of the present invention. The glass mat reinforced thermoplastic resin sheet 4 (stampable sheet) used in the present invention is made of a glass fiber cloth 1 and PP (polypropylene).
A master batch obtained by processing the heat-expandable microcapsules together with a thermoplastic resin such as a pellet or a sheet 3 impregnated with the powdery heat-expandable microcapsules 2;
It is made by so-called sheet forming that heats, compresses and equalizes thickness.
【００１１】前記の強化熱可塑性樹脂のシート４は、熱
膨張性マイクロカプセルを膨張させるために、適宜な加
熱機によって約１５０°Ｃ〜１８０°Ｃに加熱され、所
定のクリアランスまでプレスによって加圧成形される。
この加圧成形時には、一旦膨張しているマイクロカプセ
ル２が圧縮され、成形品中のマイクロカプセルは微細な
中空球体として均一に分散されている。なお、前記シー
トの加熱に際しては、金型のキャビティー内で加熱、軟
化させることもできる。The reinforced thermoplastic resin sheet 4 is heated to about 150 ° C. to 180 ° C. by an appropriate heater in order to expand the heat-expandable microcapsules, and is pressed by a press to a predetermined clearance. Molded.
During the pressure molding, the once expanded microcapsules 2 are compressed, and the microcapsules in the molded product are uniformly dispersed as fine hollow spheres. When the sheet is heated, the sheet may be heated and softened in the cavity of the mold.
【００１２】次に、樹脂成形品の比重について本発品と
従来品を比較する。従来の成形品(カバー)における比重
は、前述したように、ポリプロピレンにガラス長繊維を
含有したものであり、ガラス長繊維を多く含むことから
材料自体の比重は１．３〜１．５と大きいものであっ
た。Next, the specific gravity of the resin molded product is compared between the present invention product and the conventional product. The specific gravity of the conventional molded product (cover) is, as described above, a material containing long glass fibers in polypropylene, and the specific gravity of the material itself is as large as 1.3 to 1.5 because of containing many long glass fibers. Was something.
【００１３】これに対して、本発明で使用したガラスマ
ット強化熱可塑性樹脂のシート４は、PP（ポリプロピレ
ン）６４重量部、ガラス長繊維２７重量部、熱膨張性マ
イクロカプセル３重量部、熱膨張性マイクロカプセルの
バインダーとしての低溶融樹脂６重量部（トータル１０
０重量部）の材料で成形したものでは比重１．１〜１．
２のものが得られた。このように従来品に比べて比重が
小さくなっているのは、熱膨張マイクロバルーンが成形
品中に均一に分散しているためである。On the other hand, the sheet 4 of the glass mat reinforced thermoplastic resin used in the present invention has 64 parts by weight of PP (polypropylene), 27 parts by weight of long glass fiber, 3 parts by weight of thermally expandable microcapsules, 6 parts by weight of low melting resin as binder for water-soluble microcapsules (total 10 parts)
(0 parts by weight).
Two were obtained. The reason why the specific gravity is smaller than that of the conventional product is that the thermally expanded microballoons are uniformly dispersed in the molded product.
【００１４】また、ＰＰ素材のみ（ガラス長繊維の分を
除く）に限定して同材質の成形品を比較すれば、従来品
の比重約０．９に対して、本発明品では０．５〜０．７
になった。[0014] In addition, when comparing the molded products of the same material limited to only the PP material (excluding the glass fiber), the specific gravity of the conventional product is about 0.9, and the specific gravity of the present invention is 0.5. ~ 0.7
Became.
【００１５】次に、樹脂成形品をエンジンアンダーカバ
ーに適用させる場合について説明する。エンジンアンダ
ーカバーは、前述した如く強度部材としての機能だけで
はなく、エンジンから放射される音を車外に出さないと
いう機能を要求される。特に、エンジンアンダーカバー
は、車両下回りへの放遮音を低減させる必要がある。と
ころで、従来のガラス繊維の布に、ＰＰ（ポリプロピレ
ン）等の樹脂を含浸させたガラスマット強化熱可塑性樹
脂のシートで成形されたエンジンアンダーカバーは、遮
音効果を得られるが吸音効果が不足していた。Next, a case where a resin molded product is applied to an engine undercover will be described. As described above, the engine undercover is required to have not only a function as a strength member but also a function of not emitting sound radiated from the engine to the outside of the vehicle. In particular, it is necessary for the engine undercover to reduce sound emission and sound insulation below the vehicle. By the way, a conventional engine undercover formed of a sheet of glass mat reinforced thermoplastic resin in which a resin such as PP (polypropylene) is impregnated into a glass fiber cloth can obtain a sound insulating effect but lacks a sound absorbing effect. Was.
【００１６】しかし、本発明の樹脂成形品では、熱膨張
性マイクロカブセルで形成される空気孔の存在により自
動車のエンジンから車外に放出される放遮音を従来品よ
りも低減させることができた。However, in the resin molded article of the present invention, the sound emission and radiation emitted from the engine of the automobile to the outside of the vehicle can be reduced as compared with the conventional article due to the presence of the air holes formed by the heat-expandable microcapsules.
【００１７】また、成形品の加圧成形に際し、ガラスマ
ット強化熱可塑性樹脂のシート４と共に軟質系の表皮材
シート５をプレス金型内にセットして加圧成形すれば、
自動車のエンジンから車外に放出される放遮音をさらに
低減させることができる。Further, when the molded article is press-formed, a soft skin material sheet 5 is set in a press die together with a sheet 4 of a glass mat reinforced thermoplastic resin and press-formed.
It is possible to further reduce the noise emitted from the engine of the vehicle to the outside of the vehicle.
【００１８】[0018]
【発明の効果】以上の説明により理解される如く、本発
明は、ガラス繊維の布に、ＰＰ（ポリプロピレン）等の
熱可塑性樹脂と共に熱膨張性マスターバッチを含浸させ
たいわゆるガラスマット強化熱可塑性樹脂のシートを、
あらかじめ加熱機で加熱、軟化させるか若しくは金型の
キャビティー内で加熱、軟化させた後、所定のクリアラ
ンスまでプレス成形することによって、成形品中に熱膨
張性マイクロカプセルが膨張して形成された微細な中空
球体を均一に分散させるという自動車用樹脂成形品の製
造方法であり、軽量化と共に防音効果や断熱効果の優れ
た樹脂成形品を提供することができる。As understood from the above description, the present invention relates to a so-called glass mat reinforced thermoplastic resin obtained by impregnating a glass fiber cloth with a thermoplastic resin such as PP (polypropylene) and a thermally expandable masterbatch. Sheet of
After being heated and softened in advance by a heating machine or heated and softened in a mold cavity, by press molding to a predetermined clearance, the heat-expandable microcapsules were formed in the molded product by expansion. This is a method for producing a resin molded article for automobiles in which fine hollow spheres are uniformly dispersed, and it is possible to provide a resin molded article that is lightweight and has excellent soundproofing and heat insulating effects.
【００１９】さらに、成形品の表面に軟質系の表皮材シ
ート５を一体的に形成するようにすれば、高いレベルの
吸・遮音効果を持たせることができ、特に自動車のアン
ダーボデーに取り付けられるガラス長繊維４を含有した
カバー類の生産に適した製造方法である。Further, if the soft skin material sheet 5 is integrally formed on the surface of the molded product, a high level of sound absorbing and sound insulating effect can be obtained, and particularly, it is attached to the underbody of an automobile. This is a production method suitable for producing covers containing glass long fibers 4.
【図１】 本発明の一実施例を示すガラスマット強化熱
可塑性樹脂シートの断面図。FIG. 1 is a cross-sectional view of a glass mat reinforced thermoplastic resin sheet showing one embodiment of the present invention.
【図２】 本発明の一実施例を示す樹脂成形品の断面
図。FIG. 2 is a cross-sectional view of a resin molded product showing one embodiment of the present invention.
１ ガラス繊維の布 ２ マイクロカプセル ３
シート ４ ガラスマット強化熱可塑性樹脂シート ５
表皮材シート1 Glass fiber cloth 2 Microcapsules 3
Sheet 4 Glass mat reinforced thermoplastic resin sheet 5
Skin material sheet
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F204 AA11 AC01 AC08 AD04 AD08 AD16 AG01 AG20 AH17 FA01 FB01 FB13 FE06 FF01 FF06 FG04 FN11 FN15 FQ15 4F212 AA11 AB02 AB26 AC08 AD04 AD16 AE02 AE06 AG03 AG20 AH17 UA09 UB01 UB13 UG05 UH18 UN11 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F204 AA11 AC01 AC08 AD04 AD08 AD16 AG01 AG20 AH17 FA01 FB01 FB13 FE06 FF01 FF06 FG04 FN11 FN15 FQ15 4F212 AA11 AB02 AB26 AC08 AD04 AD16 AE02 AE06 AG03 AG20 AH17 UA09 UG09 UG09
Claims (3)
ピレン）等の熱可塑性樹脂と共に熱膨張性マイクロカプ
セルをペレット状に加工したマスターバッチもしくは粉
末状の熱膨張性マイクロカプセル(２)を含浸させたシー
ト(３)とをシート成形によってガラスマット強化熱可塑
性樹脂シート(４)に成形し、 次いで、前記ガラスマット強化熱可塑性樹脂シート(４)
を、あらかじめ加熱、軟化し含浸した熱膨張性マイクロ
カプセル(２)を膨張させた後、これをプレス金型内にセ
ットし、 その後、所定のクリアランスまで加圧して所望形状の成
形品を加工するに当たり、加圧成形時に一旦膨張してい
るマイクロカプセル(２)を圧縮し、成形品中に熱膨張性
マイクロカプセルの膨張による微細な中空球体を均一に
分散させるようにした樹脂成形品を得ることを特徴とす
る自動車用樹脂成形品の製造方法。1. A glass fiber cloth (1) and a masterbatch or powdery heat-expandable microcapsules (2) obtained by processing heat-expandable microcapsules into pellets together with a thermoplastic resin such as PP (polypropylene). The impregnated sheet (3) is molded into a glass mat reinforced thermoplastic resin sheet (4) by sheet molding, and then the glass mat reinforced thermoplastic resin sheet (4) is formed.
Is expanded in advance by heating, softening and impregnating the heat-expandable microcapsules (2), and then set in a press die, and then pressurized to a predetermined clearance to process a molded product having a desired shape. In order to obtain a resin molded product, the microcapsules (2) once expanded during compression molding are compressed to uniformly disperse fine hollow spheres due to expansion of the thermally expandable microcapsules in the molded product. A method for producing a resin molded article for automobiles, characterized by comprising:
ピレン）等の熱可塑性樹脂と共に熱膨張性マイクロカプ
セルをペレット状に加工したマスターバッチもしくは粉
末状の熱膨張性マイクロカプセル(２)を含浸させたシー
ト(３)とをシート成形によってガラスマット強化熱可塑
性樹脂シート(４)に成形し、 次いで、前記ガラスマット強化熱可塑性樹脂シート(４)
を、あらかじめ加熱、軟化し含浸した熱膨張性マイクロ
カプセル(２)を膨張させ、 次いで、膨張した前記ガラスマット強化熱可塑性樹脂シ
ート(４)および軟質系の表皮材シート(５)をプレス金型
内にセットし、 その後、所定のクリアランスまで加圧して所望形状の成
形品を加工するに当たり、加圧成形時に一旦膨張してい
るマイクロカプセル(２)を圧縮し、成形品中に熱膨張性
マイクロカプセルの膨張による微細な中空球体を均一に
分散させるようにした表皮材付の樹脂成形品を得ること
を特徴とする自動車用樹脂成形品の製造方法。2. A glass fiber cloth (1) and a masterbatch or powdery heat-expandable microcapsules (2) obtained by processing heat-expandable microcapsules into pellets together with a thermoplastic resin such as PP (polypropylene). The impregnated sheet (3) is molded into a glass mat reinforced thermoplastic resin sheet (4) by sheet molding, and then the glass mat reinforced thermoplastic resin sheet (4) is formed.
The heat-expandable microcapsules (2) which have been heated and softened and impregnated in advance are expanded, and then the expanded glass mat reinforced thermoplastic resin sheet (4) and the soft skin material sheet (5) are pressed into a press mold. In order to process a molded article having a desired shape by pressurizing to a predetermined clearance, the microcapsules (2) that have once expanded at the time of pressure molding are compressed, and a thermally expandable microcapsule is formed in the molded article. A method for producing a resin molded article for automobiles, characterized by obtaining a resin molded article with a skin material in which fine hollow spheres are uniformly dispersed by expansion of a capsule.
を加熱、軟化し含浸した熱膨張性マイクロカプセル(２)
を膨張させるのは、シート材を樹脂金型内にセットし、
このプレス金型の加熱によりおこなうようにしたことを
特徴とする請求項１又は請求項２記載の自動車用樹脂成
形品の製造方法。3. A glass mat reinforced thermoplastic resin sheet (4).
Heat-expandable microcapsules heated, softened and impregnated (2)
To expand the, set the sheet material in the resin mold,
3. The method according to claim 1, wherein the pressing die is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064216A JP2000265854A (en) | 1999-03-11 | 1999-03-11 | Manufacture of resin molded part for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064216A JP2000265854A (en) | 1999-03-11 | 1999-03-11 | Manufacture of resin molded part for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000265854A true JP2000265854A (en) | 2000-09-26 |
Family
ID=13251686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11064216A Pending JP2000265854A (en) | 1999-03-11 | 1999-03-11 | Manufacture of resin molded part for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000265854A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007112244A (en) * | 2005-10-19 | 2007-05-10 | Nishikawa Rubber Co Ltd | Automobile weatherstrip and its manufacturing method |
| JP2009191677A (en) * | 2008-02-13 | 2009-08-27 | Ishikawa Gasket Co Ltd | Insulator for internal combustion engine |
| JP2010053351A (en) * | 2008-07-29 | 2010-03-11 | Sekisui Chem Co Ltd | Fiber-reinforced resin composition |
| JP4590483B1 (en) * | 2009-08-07 | 2010-12-01 | 中川産業株式会社 | Manufacturing method of thermally expandable base material for vehicle interior and manufacturing method of base material for vehicle interior using the same |
| JP2011224968A (en) * | 2010-04-02 | 2011-11-10 | Hirotani:Kk | Method for manufacturing of interior member for vehicle |
| CN104788817A (en) * | 2015-04-03 | 2015-07-22 | 洛阳理工学院 | Modified polypropylene composite toughening material and preparation method thereof |
-
1999
- 1999-03-11 JP JP11064216A patent/JP2000265854A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007112244A (en) * | 2005-10-19 | 2007-05-10 | Nishikawa Rubber Co Ltd | Automobile weatherstrip and its manufacturing method |
| JP4694346B2 (en) * | 2005-10-19 | 2011-06-08 | 西川ゴム工業株式会社 | Manufacturing method of weather strip for automobile |
| JP2009191677A (en) * | 2008-02-13 | 2009-08-27 | Ishikawa Gasket Co Ltd | Insulator for internal combustion engine |
| JP2010053351A (en) * | 2008-07-29 | 2010-03-11 | Sekisui Chem Co Ltd | Fiber-reinforced resin composition |
| JP4590483B1 (en) * | 2009-08-07 | 2010-12-01 | 中川産業株式会社 | Manufacturing method of thermally expandable base material for vehicle interior and manufacturing method of base material for vehicle interior using the same |
| WO2011016417A1 (en) * | 2009-08-07 | 2011-02-10 | 中川産業株式会社 | Method for manufacturing thermally expandable base material for vehicle interior and method for manufacturing base material for vehicle interior using same |
| JP2011037072A (en) * | 2009-08-07 | 2011-02-24 | Nakagawa Sangyo Kk | Method of manufacturing thermally expandable base material for interior of vehicle and method of manufacturing base material for interior of vehicle using the same |
| CN102256763A (en) * | 2009-08-07 | 2011-11-23 | 中川产业株式会社 | Method for manufacturing thermally expandable base material for vehicle interior and method for manufacturing base material for vehicle interior using same |
| US8216406B2 (en) | 2009-08-07 | 2012-07-10 | Nakagawa Sangyo Co., Ltd. | Method for manufacturing thermally expandable base material for vehicle interior and method for manufacturing base material for vehicle interior using same |
| JP2011224968A (en) * | 2010-04-02 | 2011-11-10 | Hirotani:Kk | Method for manufacturing of interior member for vehicle |
| CN104788817A (en) * | 2015-04-03 | 2015-07-22 | 洛阳理工学院 | Modified polypropylene composite toughening material and preparation method thereof |
| CN104788817B (en) * | 2015-04-03 | 2017-03-01 | 洛阳理工学院 | A kind of preparation method of modified polypropene composite toughening material |
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