JP3048443B2 - Manufacturing method of coated molded products - Google Patents

Manufacturing method of coated molded products

Info

Publication number
JP3048443B2
JP3048443B2 JP26361391A JP26361391A JP3048443B2 JP 3048443 B2 JP3048443 B2 JP 3048443B2 JP 26361391 A JP26361391 A JP 26361391A JP 26361391 A JP26361391 A JP 26361391A JP 3048443 B2 JP3048443 B2 JP 3048443B2
Authority
JP
Japan
Prior art keywords
sheet
mold
resin
cavity
heating
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.)
Expired - Lifetime
Application number
JP26361391A
Other languages
Japanese (ja)
Other versions
JPH0596568A (en
Inventor
仁司 林
弘 阿部
朋子 植松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP26361391A priority Critical patent/JP3048443B2/en
Publication of JPH0596568A publication Critical patent/JPH0596568A/en
Application granted granted Critical
Publication of JP3048443B2 publication Critical patent/JP3048443B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、自動車・バイク等の車
両ボディ、OA機器・家電製品等のハウジング、文房具
等の成形品の、成形品の表面に膜厚の均一な被膜を被覆
して、表面加飾を付与したり、表面硬度、耐候性改善、
ソフトタッチ性等の機能を付与したりすることを必要と
する分野で使用される被覆成形品の製造方法に関するも
のである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded article such as a vehicle body such as an automobile or a motorcycle, a housing such as an OA device or a home electric appliance, a stationery or the like, which is coated with a film having a uniform thickness on the surface of the molded article. , Surface decoration, surface hardness, weather resistance improvement,
The present invention relates to a method for producing a coated molded product used in a field where it is necessary to impart functions such as soft touch properties.

【0002】[0002]

【従来技術】近年、日用品や自動車の内装等のプラスチ
ック成形品の付加価値を高くする方法として、射出成形
と同時に成形品の表面にシートに印刷された模様を転写
する方法や、種々の特性を備えた熱可塑性樹脂製シート
を貼付する方法等が行われている。
2. Description of the Related Art In recent years, as a method for increasing the added value of plastic molded articles such as daily necessities and automobile interiors, a method of transferring a pattern printed on a sheet to a surface of the molded article at the same time as injection molding, and various characteristics have been proposed. A method of attaching a provided thermoplastic resin sheet or the like has been performed.

【0003】その具体例として、例えば、特開昭59─
202830号公報に記載の如く、絵柄を印刷した連続
シートを通気口を有する加熱部材と枠部材の間に挟持
し、射出成形用金型に供給し、シートを射出成形用雌型
に対向して保持し、次いでこのシートの雌型に対向して
保持された部分を、加熱部材と雌型の間で加熱するとと
もに真空・圧空成形でシートを金型表面に密着(予備成
形)させて射出成形を行う装置が提案されている。
As a specific example, see, for example,
As described in JP-A-202830, a continuous sheet on which a pattern is printed is sandwiched between a heating member having a ventilation hole and a frame member, supplied to an injection molding die, and the sheet is opposed to a female mold for injection molding. Holding, and then heating the portion of the sheet which is held opposite the female mold between the heating member and the female mold, and injecting (pre-molding) the sheet into the mold surface by vacuum / pressure molding to perform injection molding. Has been proposed.

【0004】[0004]

【発明が解決しようとする課題】特開昭59─2028
30号公報の方法によると、深絞りの成形品の表面にシ
ートに印刷された模様を転写することや、熱可塑性樹脂
製シートを貼付することは可能である。しかし、シート
を雌型内に沿わせる際に、金型の入り隅部等ではシート
が大きく引き伸ばされるため、シートの膜厚が部分的に
極めて薄くなってしまい、得られた成形品の外観が低下
し、耐久性にも問題が生ずることがあるという問題点が
あった。
Problems to be Solved by the Invention JP-A-59-2028
According to the method disclosed in Japanese Patent No. 30, it is possible to transfer a pattern printed on a sheet to the surface of a deep-drawn molded product, or to attach a thermoplastic resin sheet. However, when the sheet is made to conform to the inside of the female mold, the sheet is greatly stretched at the corners of the mold and the like, so that the film thickness of the sheet partially becomes extremely thin, and the appearance of the obtained molded product is reduced. However, there is a problem that the durability may deteriorate and a problem may occur in durability.

【0005】本発明は、上記の如き従来の問題点を解消
し、深絞り等複雑な表面形状を有する成形品の表面に均
一な膜厚を有する被膜を被覆して、外観および性能の優
れた被覆成形品を製造する方法を提供することを目的と
してなされたものである。
The present invention solves the above-mentioned conventional problems and provides a coating having a uniform film thickness on the surface of a molded article having a complicated surface shape such as deep drawing, and has excellent appearance and performance. The purpose of the present invention is to provide a method for producing a coated molded article.

【0006】[0006]

【課題を解決するための手段】本発明における被覆成形
品の製造方法は、雌型と雄型との間に成形すべき成形品
の外面形状に対応する内面形状を備えたキャビティが設
けられた金型内に、被覆用シートと本体成形用樹脂とを
供給して被覆成形品を製造する方法において、被覆用シ
ートをキャビティ内に導入する際に、通気孔が設けられ
た加熱部材の表面に位置決めの目印が描かれ、その上に
通気性があり且つ熱伝導率が加熱部材の表面材と異なる
伝熱調節部材を任意の位置に取り付け自在とされた加熱
手段によって被覆用シートを加熱し、被覆用シートを加
熱部材の通気孔より圧縮空気を噴出することによりキャ
ビティ内に沿わせ、その後キャビティ内にて本体成形用
樹脂による成形を行う方法である。
According to the present invention, there is provided a method for producing a coated molded article, wherein a cavity having an inner surface shape corresponding to an outer surface shape of a molded product to be molded is provided between a female mold and a male mold. In a method for manufacturing a coated molded product by supplying a coated sheet and a resin for molding a main body into a mold, when the coating sheet is introduced into a cavity, a surface of a heating member provided with a vent hole is formed. A mark for positioning is drawn, and the covering sheet is heated by a heating means on which a heat transfer adjusting member having air permeability and heat conductivity different from the surface material of the heating member can be freely attached at any position, This is a method in which the covering sheet is made to flow along the inside of the cavity by blowing out compressed air from the ventilation holes of the heating member, and then molded with the resin for molding the main body inside the cavity.

【0007】本発明において、シートとしては、少なく
とも加熱下で展延性を有するフィルムで構成される方が
好ましく、例えば、熱可塑性樹脂製シート、熱硬化性樹
脂製シート、光硬化性樹脂製シート、電子線硬化性樹脂
製シート、熱硬化性樹脂製シートや光硬化性樹脂製シー
トや電子線硬化性樹脂製シートに高顔料を含む着色樹脂
層を積層させた積層シートやこの積層シートを予め2
色、3色等多色化したシート、熱可塑性樹脂製シートに
上記の熱可塑性樹脂製シート以外のシートを積層した積
層シートや、これらのシートの表面や界面(積層シート
間)に印刷を施した積層シート等が使用される。
In the present invention, it is preferable that the sheet is formed of a film having ductility at least under heating. For example, a sheet made of a thermoplastic resin, a sheet made of a thermosetting resin, a sheet made of a photocurable resin, A sheet made of an electron beam-curable resin, a sheet made of a thermosetting resin, a sheet made of a photocurable resin, a sheet made of an electron beam-curable resin, and a laminated sheet obtained by laminating a colored resin layer containing a high pigment,
Multi-colored sheets such as three-colored sheets, laminated sheets obtained by laminating sheets other than the above-mentioned thermoplastic resin sheets on a thermoplastic resin sheet, and printing on the surface or interface (between the laminated sheets) of these sheets. A laminated sheet or the like is used.

【0008】熱可塑性樹脂製シートとしては、例えば、
ポリスチレン、アクリル系ポリマー、ポリカーボネー
ト、ポリ塩化ビニル、ポリエチレン、ポリプロピレン、
アクリロニトリル─ブタジエン─スチレン共重合体(A
BS)、変性ポリフェニレンオキシド、ポリフェニレン
サルファイド、ポリエーテルイミド、ポリエーテルエー
テルケトン、アイオノマー等を主成分とするシートが使
用される。
As a sheet made of a thermoplastic resin, for example,
Polystyrene, acrylic polymer, polycarbonate, polyvinyl chloride, polyethylene, polypropylene,
Acrylonitrile butadiene styrene copolymer (A
BS), a modified polyphenylene oxide, a polyphenylene sulfide, a polyetherimide, a polyetheretherketone, a sheet mainly composed of an ionomer and the like are used.

【0009】熱硬化性樹脂製シートとしては、例えば、
アクリルポリオール等の反応性アクリル樹脂とブロック
イソシアネートを主成分とする未硬化または半硬化状態
のシート、反応性ビニルモノマーおよび/またはオリゴ
マーと、熱可塑性樹脂および/またはビニル基を有する
樹脂と、過酸化物とを主成分とする未硬化、半硬化状態
のシート等が使用される。
As a thermosetting resin sheet, for example,
An uncured or semi-cured sheet mainly composed of a reactive acrylic resin such as an acrylic polyol and a blocked isocyanate, a reactive vinyl monomer and / or oligomer, a thermoplastic resin and / or a resin having a vinyl group, and peroxide An uncured or semi-cured sheet mainly composed of a material and the like is used.

【0010】光硬化性樹脂製シートとしては、例えば、
熱可塑性樹脂とビニル基等の二重結合を有するモノマー
と、光開始剤とを主成分とする未硬化または半硬化状態
のシート等が使用される。
As a photo-curable resin sheet, for example,
An uncured or semi-cured sheet mainly containing a thermoplastic resin, a monomer having a double bond such as a vinyl group, and a photoinitiator is used.

【0011】電子線硬化性樹脂製シートとしては、例え
ば、熱可塑性樹脂と、ビニル基等の二重結合を有するモ
ノマーとを主成分とする未硬化または半硬化状態のシー
ト等が使用される。
As the electron beam-curable resin sheet, for example, an uncured or semi-cured sheet mainly containing a thermoplastic resin and a monomer having a double bond such as a vinyl group is used.

【0012】本発明に用いる成形用樹脂としては、上記
の合成樹脂製シート用の熱可塑性樹脂、不飽和ポリエス
テル樹脂、アクリル樹脂、エポキシ樹脂、またはこれら
の樹脂にガラス繊維等の充填剤を添加したもの等が挙げ
られる。
As the molding resin used in the present invention, the above-mentioned thermoplastic resin for synthetic resin sheets, unsaturated polyester resin, acrylic resin, epoxy resin, or a filler such as glass fiber added to these resins. And the like.

【0013】本発明で用いられる通気性があり熱伝導率
の高い伝熱調節部材としては、例えば、熱伝導率が10
-1〜100 (cal/s・cm・℃)程度の、耐熱性の
ある(加熱手段の温度で溶融または大きく変形しない)
材料、具体的には、銀、銅、アルミニウム等の金属から
なる板に、機械加工等で通気孔をあけたもの等が挙げら
れる。この部材には、必要に応じて防錆、離型等の表面
処理を施される。
As the heat-transfer adjusting member having air permeability and high thermal conductivity used in the present invention, for example, a heat conductive member having a thermal conductivity of 10
-1 ~10 0 (cal / s · cm · ℃) about, a heat-resistant (not melting or greatly deformed at a temperature of the heating means)
Examples thereof include a plate made of a metal, such as silver, copper, or aluminum, which is provided with a vent hole by machining or the like. This member is subjected to a surface treatment such as rust prevention and release as required.

【0014】本発明で用いられる通気性があり熱伝導率
の低い伝熱調節部材としては、例えば、熱伝動率が10
-2〜10-6(cal/s・cm・℃)程度の、耐熱性の
ある(加熱手段の温度で溶融または大きく変形しない)
材料で、絹、木綿等の繊維やガラス繊維等からなる織物
や不織布、連続気泡を有する架橋ポリエチレン等の高分
子材料の発泡体、シリカ、アルミナ、ゼオライト等の多
孔質無機材料からなるものや、木材、紙等の材料、フッ
素樹脂、エンプラ樹脂等の材料からなる板に機械加工等
で通気孔をあけたもの等が挙げられる。
The heat-transfer adjusting member having air permeability and low thermal conductivity used in the present invention has, for example, a heat conductivity of 10%.
Heat resistance of about -2 to 10 -6 (cal / s · cm · ° C) (does not melt or deform significantly at the temperature of the heating means)
Materials, woven or non-woven fabrics made of fibers such as silk, cotton, etc. or glass fibers, foams of polymer materials such as cross-linked polyethylene having open cells, silica, alumina, those made of porous inorganic materials such as zeolite, A plate made of a material such as wood or paper, or a material such as a fluororesin or an engineering plastic resin, which is provided with a vent hole by machining or the like may be used.

【0015】本発明の被覆成形品の製造方法は、射出成
形法のほか、スタンピング成形法、シートモールドコン
パウンド(SMC)プレス成形法等金型に樹脂を供給し
て成形する方法であれば、どの様な方法であってもよ
い。また、ここで使用される金型の材質や射出成形のゲ
ートの位置等は公知の材質、公知の方法であって構わな
い。
The method for producing a coated molded article of the present invention is not limited to injection molding, stamping molding, and sheet molding compound (SMC) press molding, as long as it is a method of supplying resin to a mold and molding. Such a method may be used. Further, the material of the mold and the position of the gate for injection molding used here may be a known material or a known method.

【0016】本発明で好適に製造される被覆成形品とし
ては、例えば、自動車・バイク等の車両ボディ、OA機
器・家電製品等のハウジング、文房具等の成形品の、成
形品の表面に膜厚の均一な被膜を被覆して、表面加飾を
付与したり、表面硬度、耐候性改善、ソフトタッチ性等
の機能を付与したりするものが挙げられる。
Examples of the coated molded article preferably produced in the present invention include, for example, a molded article such as a vehicle body such as an automobile or a motorcycle, a housing such as OA equipment or a household electric appliance, a stationery, etc. To impart surface decoration, or to impart functions such as surface hardness, improvement in weather resistance, and soft touch properties.

【0017】[0017]

【作用】本発明においては、被覆用シートをキャビティ
内に導入する際に、通気孔が設けられた加熱部材の表面
に位置決めの目印が描かれ、その上に通気性があり且つ
熱伝導率が加熱部材の表面材と異なる伝熱調節部材を任
意の位置に取り付けた加熱手段により被覆用シートを加
熱し、その被覆用シートを加熱部材の通気孔より圧縮空
気を噴出することによりキャビティ内に沿わせることに
より、被覆用シートが大きく引き伸ばされて膜厚が薄く
なり過ぎるおそれのある部分に対応する被覆用シートの
加熱を、加熱部材の表面に通気性があり熱伝導率が加熱
部材の表面材より小さい材料からなる伝熱調節部材を位
置決めの目印を目安に部分的に取り付けた加熱手段によ
り、他の部分より伝熱量を小さくして行うことができる
ので、その部分が大きく引き伸ばされて膜厚が薄くなら
ないように調節することができる。
According to the present invention, when the covering sheet is introduced into the cavity, a positioning mark is drawn on the surface of the heating member provided with the ventilation holes, on which the air-permeable and heat-conductive material is placed. The covering sheet is heated by a heating means in which a heat transfer adjusting member different from the surface material of the heating member is attached to an arbitrary position, and the covering sheet is formed along the inside of the cavity by ejecting compressed air from the ventilation holes of the heating member. The heating of the coating sheet corresponding to the portion where the coating sheet may be greatly stretched and the film thickness may become too thin by applying the heat to the surface of the heating member has air permeability and thermal conductivity. By the heating means in which the heat transfer adjusting member made of a smaller material is partially attached with the positioning mark as a guide, the heat transfer can be performed with a smaller heat transfer amount than the other portions, so that the portion is It can be adjusted so that the film thickness is stretched hear is not thin.

【0018】逆に、被覆用シートが引き伸ばされにくく
膜厚が厚くなりすぎるおそれのある部分に対応する被覆
用シートの加熱を、加熱部材の表面に通気性があり熱伝
導率が加熱部材の表面材よりも大きい材料からなる伝熱
調節部材を位置決めの目印を目安に部分的に取り付けた
加熱手段により、他の部分より伝熱量を大きくして行う
ことができるので、その部分が引き伸ばされされずに膜
厚が厚くならないようにする調節することができる。
Conversely, the heating of the coating sheet corresponding to the portion where the coating sheet is unlikely to be stretched and the film thickness may be too large is performed by heating the surface of the heating member with air permeability and heat conductivity of the surface of the heating member. The heat transfer adjusting member made of a material larger than the material is heated by partially attaching the heat transfer adjusting member with the positioning mark as a guide, so that the heat transfer amount can be made larger than the other portions, so that the portion is not stretched. Can be adjusted so that the film thickness does not become too thick.

【0019】これにより、成形品の表面に膜厚の均一な
被膜を被覆して、外観および性能の優れた表面加飾を付
与したり、表面硬度、耐候性改善、ソフトタッチ性の機
能を付与することができる。
Thus, the surface of the molded article is coated with a film having a uniform thickness to give a surface decoration with excellent appearance and performance, and to impart functions of improving surface hardness, weather resistance and soft touch properties. can do.

【0020】[0020]

【実施例】以下、本発明を図面の実施例により説明す
る。まず、本発明に使用する金型の一例について、図1
を参照して説明する。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. First, an example of a mold used in the present invention is shown in FIG.
This will be described with reference to FIG.

【0021】1は本発明に使用する射出成形用金型であ
り、移動側の雌型11と固定側の雄型12とからなり、
雌型11と雄型12との間には、断面略コ字状の横長箱
状の表面の一部に半球状の突部を有する成形すべき成形
品の外面形状に対応した内面形状を備えたキャビティ1
3が設けられている。
Reference numeral 1 denotes an injection molding die used in the present invention, which comprises a female die 11 on the moving side and a male die 12 on the fixed side.
Between the female mold 11 and the male mold 12, an inner surface shape corresponding to the outer shape of a molded product to be molded having a hemispherical protrusion on a part of a horizontally long box-like surface having a substantially U-shaped cross section is provided. Cavity 1
3 are provided.

【0022】即ち、雌型11内には成形品の外表面を形
成する凹部111が設けられ、凹部111にはさらに半
球状の窪み部111aが設けられている。また、雄型1
2内には横長箱状の成形品の内表面を形成する凸部12
1と、端面を形成する端面形成部122とが設けられ、
凸部121にはさらに半球状の突起部121aが設けら
れている。
That is, the female mold 11 is provided with a concave portion 111 forming the outer surface of the molded product, and the concave portion 111 is further provided with a hemispherical concave portion 111a. In addition, male type 1
2, a convex portion 12 forming an inner surface of a horizontally long box-shaped molded product is provided.
1 and an end face forming part 122 forming an end face are provided,
The protrusion 121 is further provided with a hemispherical protrusion 121a.

【0023】そして、金型1を閉じたとき、雌型11の
凹部111、雄型12の凸部121および端面形成部1
22に囲まれた部分が成形品を成形するキャビティ13
とされる。
When the mold 1 is closed, the concave portion 111 of the female mold 11, the convex portion 121 of the male mold 12, and the end face forming portion 1
22 is a cavity 13 for molding a molded product.
It is said.

【0024】雌型11の凹部111には、極めて小さい
通気孔112が多数設けられており、通気孔112を通
して空気の吸引および噴出ができるようにされている。
金型1を開いた状態のときに、雌型11と雄型12との
間に、図2および図3に示す、加熱手段4が進退自在に
設けられている。加熱手段4は加熱部材41を備えてい
る。加熱部材41には、多数の極めて小さな通気孔42
が設けられ、通気孔42を通して空気の吸引および噴出
が可能とされている。加熱部材41の表面はフッ素樹脂
処理が施され、その上に格子幅10mmの格子状の目盛
りが描かれている。その上に通気性があり且つ熱伝導率
が加熱部材の表面材と異なる伝熱調節部材43を格子状
の目盛りを目安として任意の位置に取り付け自在とされ
ている。伝熱調節部材43の加熱部材41の表面への固
定は、耐熱性のあるシリコーン粘着剤等の接着剤を用い
たり、磁力や他に機械的手段が適宜採用される。
The concave portion 111 of the female mold 11 is provided with a large number of extremely small ventilation holes 112, through which air can be sucked and ejected.
When the mold 1 is opened, a heating means 4 shown in FIGS. 2 and 3 is provided between the female mold 11 and the male mold 12 so as to be able to advance and retreat. The heating means 4 includes a heating member 41. The heating member 41 has a number of very small vents 42
Is provided, and suction and ejection of air can be performed through the ventilation hole 42. The surface of the heating member 41 is subjected to a fluororesin treatment, and a grid-like scale with a grid width of 10 mm is drawn thereon. A heat-transfer adjusting member 43 having air permeability and different in heat conductivity from the surface material of the heating member can be freely attached to an arbitrary position by using a grid-like scale as a guide. For fixing the heat transfer adjusting member 43 to the surface of the heating member 41, an adhesive such as a heat-resistant silicone adhesive or the like, magnetic force or other mechanical means is appropriately adopted.

【0025】次に、本発明の工程の一例を順次示す図2
〜図4を参照して説明する。まず、図2に示す如く、加
熱手段4の加熱部材41の多数の通気孔42が開孔する
表面の、雌型11の半球状の窪み部111aに対応する
部分のほぼ中央に、窪み部111aの径の約半分の径を
有する円形の厚み3mmのガーゼを重ねた通気性を有し
且つ低熱伝導率の伝熱調節部材43aが、シリコーン粘
着剤により接着されている。
Next, FIG. 2 sequentially shows an example of the process of the present invention.
This will be described with reference to FIGS. First, as shown in FIG. 2, a depression 111a is provided substantially at the center of a portion corresponding to the hemispherical depression 111a of the female mold 11 on the surface of the heating member 41 of the heating means 4 where the many ventilation holes 42 are opened. The air-permeable and low-thermal-conductivity heat-transfer adjusting member 43a on which a circular gauze having a thickness of about 3 mm and having a diameter approximately half of the diameter of the heat-transferring member is laminated is bonded with a silicone adhesive.

【0026】雌型11の凹部111が開口する側面に、
被覆用シート3を加熱手段4の加熱部材41の多数の通
気孔42が開孔し伝熱調節部材43aを接着した面上に
通気孔42を通して吸引固定した状態で、加熱手段4と
ともに供給する。その後、通気孔42の吸引を停止す
る。
On the side of the female mold 11 where the recess 111 opens,
The covering sheet 3 is supplied together with the heating means 4 in a state in which a large number of ventilation holes 42 of the heating member 41 of the heating means 4 are opened and suction-fixed through the ventilation holes 42 on the surface to which the heat transfer adjusting member 43a is adhered. Thereafter, the suction of the ventilation holes 42 is stopped.

【0027】次に、図3に示す如く、雌型11の凹部1
11の通気孔112を通して真空吸引するとともに、加
熱部材41の通気孔42を通して圧縮空気を噴出し、被
覆用シート3を凹部111の全面に密着させる。このと
き、雌型11の凹部111の窪み部111aに対応する
加熱部材41の表面に通気性を有し且つ低熱伝導率の伝
熱調節部材43aが接着されているので、その上の被覆
シート3の部分は他の部分よりも加熱部材41からの熱
伝導が少なく、その部分だけが膜厚が薄くなるように大
きく引き伸ばされることなく全体の膜厚が均一になるよ
うに引き伸ばされて、被覆用シート3が雌型11の凹部
111全体に密着される。
Next, as shown in FIG.
In addition to vacuum suction through the ventilation holes 112 of 11, compressed air is blown out through the ventilation holes 42 of the heating member 41, and the covering sheet 3 is brought into close contact with the entire surface of the concave portion 111. At this time, since the heat-transfer adjusting member 43a having air permeability and low thermal conductivity is adhered to the surface of the heating member 41 corresponding to the concave portion 111a of the concave portion 111 of the female mold 11, the covering sheet 3 thereon is formed. The portion has less heat conduction from the heating member 41 than the other portions, and only the portion is stretched so that the entire film thickness becomes uniform without being greatly stretched so as to reduce the film thickness, and is used for coating. The sheet 3 is brought into close contact with the entire concave portion 111 of the female mold 11.

【0028】しかる後、雌型11の通気孔42の空気の
吸引、および加熱部材41の通気孔の圧縮空気の噴出を
とめ、加熱手段4を除去し、図4に示す如く、金型1を
閉じる。金型1内では、全面に被覆用のシート3が密着
された状態とされた雌型11の凹部111、雄型12の
凸部121および端面形成部122に囲まれた密閉され
たキャビティ13が形成される。
Thereafter, the suction of the air from the air holes 42 of the female mold 11 and the ejection of the compressed air from the air holes of the heating member 41 are stopped, the heating means 4 is removed, and as shown in FIG. close. In the mold 1, a closed cavity 13 surrounded by the concave portion 111 of the female mold 11, the convex portion 121 of the male mold 12, and the end face forming portion 122 in a state where the covering sheet 3 is in close contact with the entire surface. It is formed.

【0029】このキャビティ13内に、射出成形機より
本体成形用の溶融された本体成形用樹脂をスプルー12
3を通して射出成形する。そして、所定時間経過し、金
型1内で冷却した後、金型1を開き、成形品を取り出
し、成形品の端面からはみ出しているシートを切断し
て、図5に示す如く、成形品本体21の外表面が膜厚の
均一な被膜22で被覆された横長箱状の表面の一部に半
球状の突起を有する被覆成形品2を得る。
In the cavity 13, a molten resin for molding the main body for molding the main body by the injection molding machine is sprue 12.
Injection molding through 3. After elapse of a predetermined time and cooling in the mold 1, the mold 1 is opened, the molded product is taken out, and the sheet protruding from the end face of the molded product is cut, and as shown in FIG. A coated molded article 2 having hemispherical projections on a part of a horizontally long box-shaped surface in which the outer surface of 21 is covered with a film 22 having a uniform thickness is obtained.

【0030】次に、本発明の工程の別の一例を順次示す
図6、図7および図4を参照して説明する。まず、図6
に示す如く、加熱手段4の加熱部材41の多数の通気孔
42が開孔する雌型11側に向けられる面の雌型11の
半球状の窪み部111aが設けられていない長方形の部
分に対応する部分のほぼ中央に、長方形の部分の縦横の
長さが約半分の長方形状の厚み3mmの直径が0.5m
m程度の通気孔が10個/cm2 程度の割合であけられ
ているアルミニウム板からなる高熱伝導率の熱伝導調節
部材43bが、シリコーン粘着剤により接着されてい
る。
Next, another example of the process of the present invention will be described with reference to FIGS. First, FIG.
As shown in the figure, the surface of the heating member 41 of the heating means 4 facing the female mold 11 side where a large number of ventilation holes 42 are opened corresponds to a rectangular portion where the hemispherical recess 111a of the female mold 11 is not provided. In the approximate center of the part to be formed, the rectangular part is about half the length and width of the rectangle, and the diameter of 3 mm thick is 0.5 m.
A heat conduction adjusting member 43b having a high thermal conductivity and made of an aluminum plate having about 10 m / cm 2 ventilation holes is bonded with a silicone adhesive.

【0031】雌型11の凹部111が開口する側面に、
被覆用シート3を加熱手段4の加熱部材41の多数の通
気孔42が開孔し高熱伝導率の伝熱調節部材43bを接
着した面の上に通気孔42を通して吸引固定した状態
で、加熱手段4とともに供給する。その後、通気口42
の吸引を停止する。
On the side of the female mold 11 where the recess 111 opens,
In a state in which the coating sheet 3 is suction-fixed through the ventilation holes 42 on the surface where the large number of ventilation holes 42 of the heating member 41 of the heating unit 4 are opened and the heat transfer adjusting member 43b having high thermal conductivity is adhered, the heating unit Supply with 4. Then, the vent 42
Stop suction.

【0032】次に、図7に示す如く、雌型11の凹部1
11の通気孔112を通して真空吸引するとともに、加
熱部材41の通気孔42を通して圧縮空気を噴出し、被
覆用シート3を凹部111の全面に密着させる。このと
き、雌型11の凹部111の窪み部111a以外の長方
形の部分に対応する加熱部材41の表面に通気性を有し
且つ高熱伝導率の伝熱調節部材43bが接着されている
ので、その上の被覆シート3の部分は他の部分よりも加
熱部材41からの熱伝導が多く、その部分だけが膜厚が
厚くなることなく全体の膜厚が均一になるように引き伸
ばされて、覆用シート3が雌型11の凹部111全体に
密着される。
Next, as shown in FIG.
In addition to vacuum suction through the ventilation holes 112 of 11, compressed air is blown out through the ventilation holes 42 of the heating member 41, and the covering sheet 3 is brought into close contact with the entire surface of the concave portion 111. At this time, since the heat-transfer adjusting member 43b having air permeability and high thermal conductivity is bonded to the surface of the heating member 41 corresponding to the rectangular portion other than the concave portion 111a of the concave portion 111 of the female mold 11, The upper portion of the cover sheet 3 has more heat conduction from the heating member 41 than the other portions, and only that portion is stretched so that the entire film thickness becomes uniform without increasing the film thickness. The sheet 3 is brought into close contact with the entire concave portion 111 of the female mold 11.

【0033】しかる後、キャビティ13内に、射出成形
機より本体成形用の溶融された本体成形用樹脂をスプル
ー123を通して射出成形する。そして、所定時間経過
し、金型1内で冷却した後、金型1を開き、成形品を取
り出し、成形品の端面からはみ出しているシートを切断
して、図5に示す如く、成形品本体21の外表面が膜厚
の均一な被膜22で被覆された横長箱状の表面の一部に
半球状の突起を有する被覆成形品2を得る。
Thereafter, a molten main body molding resin for main body molding is injection-molded into the cavity 13 through a sprue 123 by an injection molding machine. After elapse of a predetermined time and cooling in the mold 1, the mold 1 is opened, the molded product is taken out, and the sheet protruding from the end face of the molded product is cut, and as shown in FIG. A coated molded article 2 having hemispherical projections on a part of a horizontally long box-shaped surface in which the outer surface of 21 is covered with a film 22 having a uniform thickness is obtained.

【0034】実施例1 図1に示す金型1を用い、図2〜図4に示す上記の工程
に従い、下記の条件にて、図5に示す如き被覆成形品2
の成形を行った。
Example 1 Using a mold 1 shown in FIG. 1, a coated molded article 2 as shown in FIG.
Was formed.

【0035】シートとして、カレンダー成形で作成した
膜厚500μmのアクリニトリル─ブタジエン─スチレ
ン共重合体(ABS)製シートを用い、加熱手段41の
温度を160℃とし、雌型11の通気孔112より真空
吸引時に、加熱手段41の通気孔42より3kg/cm
2 で10秒間空気を噴出した。
As the sheet, a sheet made of an acrylonitrile-butadiene-styrene copolymer (ABS) having a thickness of 500 μm and formed by calendering is used. The temperature of the heating means 41 is set to 160 ° C. 3 kg / cm from the air hole 42 of the heating means 41 during vacuum suction
Air was spouted at 2 for 10 seconds.

【0036】本体成形用樹脂として、ABS(電気化学
工業社製:商品名「ABS─ME」)を用い、射出成形
機より雌型11の温度を70℃としたキャビティ13内
にノズル先端温度230℃にて溶融した本体成形用樹脂
を射出した。
As the resin for molding the main body, ABS (manufactured by Denki Kagaku Kogyo Co., Ltd .: trade name "ABS @ ME") is used. The resin for molding the main body, which was melted at ℃, was injected.

【0037】その結果、ABS製の成形品本体21の外
表面がABS製シートによる被膜22で被覆された横長
箱状の表面の一部に半球状の突起を有する被覆成形品2
を得ることができた。被覆成形品2の被膜の膜厚は均一
であり、その外観は良好であった。
As a result, the coated molded article 2 having a hemispherical projection on a part of the oblong box-shaped surface in which the outer surface of the molded article body 21 made of ABS is coated with the coating 22 made of ABS sheet
Could be obtained. The film thickness of the coated molded article 2 was uniform, and the appearance was good.

【0038】実施例2 図1に示す金型1を用い、図6、図7および図4に示す
上記の工程に従いこと以外は、実施例1と同様にして図
5に示す如き被覆成形品2の製造を行った。
Example 2 A coated molded product 2 as shown in FIG. 5 was used in the same manner as in Example 1 except that the mold 1 shown in FIG. 1 was used and the above steps shown in FIGS. 6, 7 and 4 were followed. Was manufactured.

【0039】その結果、ABS製の成形品本体21の外
表面がABS製シートによる被膜22で被覆された横長
箱状の表面の一部に半球状の突起を有する被覆成形品2
を得ることができた。被覆成形品2の被膜の膜厚は均一
であり、その外観は良好であった。
As a result, a coated molded article 2 having a hemispherical projection on a part of a horizontally long box-shaped surface in which the outer surface of the molded article body 21 made of ABS is coated with a coating 22 made of ABS sheet.
Could be obtained. The film thickness of the coated molded article 2 was uniform, and the appearance was good.

【0040】比較例1 被覆用シートの加熱を、加熱部材41の表面に通気性を
有し且つ低熱伝導率の伝熱調節部材43aを接着しない
加熱部材により行ったこと以外は、実施例1と同様にし
て被覆成形品の製造を行った。
[0040] The heating of the Comparative Example 1 coating sheet, except that the heat transfer adjusting member 43a of and low thermal conductivity breathable the surface of the heating member 41 was performed by heating member does not adhere, as in Example 1 In the same manner, a coated molded product was manufactured.

【0041】その結果、ABS製の成形品本体の外表面
の、半球状の突起の表面上に被覆された被膜が極端に膜
厚が薄くなっており、外観の不良な被覆成形品しか得る
ことができなかった。
As a result, the thickness of the coating on the surface of the hemispherical projections on the outer surface of the ABS molded article body is extremely thin, and only a coated molded article having poor appearance can be obtained. Could not.

【0042】[0042]

【効果】本発明においては、上記の如き構成とされてい
るので、成形品の表面に膜厚の均一な被膜を被覆して、
外観および性能の優れた表面加飾を付与したり、表面硬
度、耐候性改善、ソフトタッチ性等の機能を付与するこ
とができる。
According to the present invention, since the structure is as described above, the surface of the molded article is coated with a film having a uniform thickness.
Surface decoration with excellent appearance and performance can be imparted, and functions such as surface hardness, weather resistance improvement, and soft touch properties can be imparted.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に使用する金型の一例を示す縦断端面図
である。
FIG. 1 is a longitudinal sectional view showing an example of a mold used in the present invention.

【図2】本発明の工程の一例を説明する、雌型11の側
面に被覆用シート3を加熱手段4とともに供給する状態
を示す縦断端面図である。
FIG. 2 is a vertical cross-sectional end view illustrating an example of a process of the present invention, showing a state in which a covering sheet 3 is supplied together with a heating means 4 to a side surface of a female mold 11;

【図3】本発明の工程の一例を説明する、雌型11の凹
部111に被覆用シート3を密着する状態を示す縦断端
面図である。
FIG. 3 is a vertical cross-sectional end view illustrating an example of a process of the present invention, showing a state in which a covering sheet 3 is in close contact with a concave portion 111 of a female mold 11;

【図4】本発明の工程の一例を説明する、キャビティ内
に本体成形用樹脂を射出成形する状態を示す縦断端面図
である。
FIG. 4 is a vertical cross-sectional end view illustrating an example of a process of the present invention and showing a state in which a resin for molding a main body is injection-molded in a cavity.

【図5】本発明により得られた被覆成形品の一例を示す
縦断斜視図である。
FIG. 5 is a longitudinal sectional perspective view showing an example of a coated molded product obtained by the present invention.

【図6】本発明の工程の別の一例を説明する、雌型11
の側面に被覆用シート3を加熱手段4とともに供給する
状態を示す縦断端面図である。
FIG. 6 illustrates a female mold 11 for explaining another example of the process of the present invention.
FIG. 4 is a longitudinal sectional end view showing a state in which a coating sheet 3 is supplied together with a heating means 4 to the side surface of FIG.

【図7】本発明の工程の別の一例を説明する、雌型11
の凹部111に被覆用シート3を密着する状態を示す縦
断端面図である。
FIG. 7 illustrates a female mold 11 for explaining another example of the process of the present invention.
FIG. 4 is a longitudinal sectional end view showing a state in which the covering sheet 3 is in close contact with a concave portion 111 of FIG.

【符号の説明】[Explanation of symbols]

1 金型 2 被覆成形品 3 被覆用シート 4 加熱手段 11 雌型 12 雄型 13 キャビティ 21 成形品本体 22 被膜 41 加熱部材 42 通気孔 43 伝熱調節部材 43a 低熱伝導率の伝熱調節部材 43b 高熱伝導率の伝熱調節部材 111 凹部 111a 窪み部 112 通気孔 121 凸部 121a 突起部 122 端面形成部 REFERENCE SIGNS LIST 1 mold 2 coated molded article 3 covering sheet 4 heating means 11 female mold 12 male mold 13 cavity 21 molded article main body 22 coating 41 heating member 42 ventilation hole 43 heat transfer adjusting member 43a heat transfer adjusting member with low thermal conductivity 43b high heat Heat transfer adjusting member for conductivity 111 Depressed portion 111a Depressed portion 112 Vent hole 121 Convex portion 121a Projection portion 122 End face forming portion

フロントページの続き (56)参考文献 特開 平3−34828(JP,A) 特開 昭59−202830(JP,A) 特開 昭62−256620(JP,A) 特開 昭61−137716(JP,A) 特開 昭61−63424(JP,A) 特開 昭60−212314(JP,A) 特開 昭63−162218(JP,A) 特開 昭53−128917(JP,A) 特開 平4−341811(JP,A) 特公 昭63−139717(JP,B2) 実公 昭63−21386(JP,Y2) (58)調査した分野(Int.Cl.7,DB名) B29C 45/00 - 45/84 B29C 33/00 - 33/76 Continuation of the front page (56) References JP-A-3-34828 (JP, A) JP-A-59-202830 (JP, A) JP-A-62-256620 (JP, A) JP-A-61-137716 (JP, A) JP-A-61-63424 (JP, A) JP-A-60-212314 (JP, A) JP-A-63-162218 (JP, A) JP-A-53-128917 (JP, A) 4-341811 (JP, A) JP-B-63-139717 (JP, B2) JP-B-63-21386 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) B29C 45/00 -45/84 B29C 33/00-33/76

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 雌型と雄型との間に成形すべき成形品の
外面形状に対応する内面形状を備えたキャビティが設け
られた金型内に、被覆用シートと本体成形用樹脂とを供
給して被覆成形品を製造する方法において、被覆用シー
トをキャビティ内に導入する際に、通気孔が設けられた
加熱部材の表面に位置決めの目印が描かれ、その上に通
気性があり且つ熱伝導率が加熱部材の表面材と異なる伝
熱調節部材を任意の位置に取り付け自在とされた加熱手
段によって被覆用シートを加熱し、被覆用シートを加熱
部材の通気孔より圧縮空気を噴出することによりキャビ
ティ内に沿わせ、その後キャビティ内にて本体成形用樹
脂による成形を行うことを特徴とする被覆成形品の製造
方法。
1. A coating sheet and a body molding resin are placed in a mold provided with a cavity having an inner surface shape corresponding to the outer shape of a molded product to be molded between a female mold and a male mold. In the method of supplying and manufacturing a coated molded product, when introducing the coating sheet into the cavity, a positioning mark is drawn on the surface of the heating member provided with the ventilation hole, and there is air permeability on it. The covering sheet is heated by a heating means having a thermal conductivity different from that of the surface material of the heating member, and the compressed sheet is blown out from the ventilation hole of the covering member. A method for producing a coated molded article, wherein the molded article is formed along a cavity, and then molded with a resin for molding a main body in the cavity.
JP26361391A 1991-10-11 1991-10-11 Manufacturing method of coated molded products Expired - Lifetime JP3048443B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26361391A JP3048443B2 (en) 1991-10-11 1991-10-11 Manufacturing method of coated molded products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26361391A JP3048443B2 (en) 1991-10-11 1991-10-11 Manufacturing method of coated molded products

Publications (2)

Publication Number Publication Date
JPH0596568A JPH0596568A (en) 1993-04-20
JP3048443B2 true JP3048443B2 (en) 2000-06-05

Family

ID=17391972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26361391A Expired - Lifetime JP3048443B2 (en) 1991-10-11 1991-10-11 Manufacturing method of coated molded products

Country Status (1)

Country Link
JP (1) JP3048443B2 (en)

Also Published As

Publication number Publication date
JPH0596568A (en) 1993-04-20

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