JP4460697B2 - Manufacturing method of decorative moldings - Google Patents
Manufacturing method of decorative moldings Download PDFInfo
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- JP4460697B2 JP4460697B2 JP34220799A JP34220799A JP4460697B2 JP 4460697 B2 JP4460697 B2 JP 4460697B2 JP 34220799 A JP34220799 A JP 34220799A JP 34220799 A JP34220799 A JP 34220799A JP 4460697 B2 JP4460697 B2 JP 4460697B2
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- molded product
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Description
【０００１】
【発明の属する技術分野】
本発明は、プラスチック成型品の表面に美粧を施す方法に関する。
【０００２】
【従来の技術及びその課題】
従来、プラスチック成型品の表面に美粧を施すためには塗料による塗装が一般に行われている。しかし、この塗装には多くの工数が掛かること、塗装を行うためのブースや焼付乾燥炉の設置のために大きなスペースが必要であること、これらを運転するためには多大なエネルギーが必要であること、また、塗装作業中にゴミが着くなど種々の問題がある。
【０００３】
塗装に代わる外部装飾法として、可撓性のある加飾フィルムを貼り付ける方法も提案されているが、形状が複雑なプラスチック成型品の場合には加飾フィルムを表面に貼り付けることが困難であるという問題がある。
【０００４】
また、金型に加飾フィルムを挿入して、加飾面の裏面より溶融樹脂を注入する射出成形によって美粧面を有するプラスチック部品等を製造する方法（例えば特開昭６３−２１６７１号公報、特開昭６３−１２８４６９号公報、特表平２−５０３０７７号公報）も提案されている。しかし、これらの方法では、加飾フィルムに直接溶融した高温（一般に２００℃以上）の樹脂が高圧で押し付けられるために、加飾フィルムは射出成型時に溶融して流れたり、変質したりしないものでなければならず、使用できる樹脂フィルムに制限がある。また、耐熱性の低い樹脂フィルムをこれらの方法に適用しようとする場合、加飾を目的としたフィルム層の裏面に耐熱性のある厚手のシートを積層して、射出成型時に溶融樹脂が加飾フィルム面に直接触れないようにする必要があり、そのためコストが高くなるという問題がある。
【０００５】
さらに、上記した方法の他に、金型内面に加飾フィルムが装填された雌型金型内に、金型と嵌合する形に成型され、表面に接着剤が塗布されたプラスチック成型品を押し込むことによって加飾フィルムとプラスチック成型品を接合させる方法も知られている。しかし、複雑な形状のプラスチック成型品の表面に接着剤を均一に塗布することが困難な場合が多く、製造に際し長時間を要するなどの問題がある。
【０００６】
【課題を解決するための手段】
本発明者は、前述した問題点を解決するために鋭意検討を重ねた結果、本発明を完成するに至った。
【０００７】
かくして、本発明に従えば、
「１．加飾フィルムに所定の形状を与えることができる雌型金型内面に、ホットメルト接着剤層を加飾面の反対側に設けてなる成形性加飾フィルムを必要ならば加熱して加飾面が雌型金型内面に対向するように装着し、次いでこの雌型金型内に嵌合するように成型され、必要ならば加熱されたプラスチック成型物を必要ならば加熱した雌型金型内に圧入して、加飾フィルムを雌型内面に押しつけることによって所定の形状を与えると同時に加飾フィルムとプラスチック成型物を接合させることを特徴とする加飾成型物の製造方法。
２．加飾フィルムに所定の形状を与える金型を有する真空成形機の金型内面に、ホットメルト接着剤層を加飾面の反対側に設けてなる成形性加飾フィルムを加飾面が金型内面に対向するように装着し、必要ならば加熱しながら真空成型を行って、加飾フィルムを真空成型機金型内面に密着させた後、金型内に嵌合するように成型され、必要ならば加熱されたプラスチック成型物を必要ならば加熱した金型内に圧入して、加飾フィルムをプラスチック成型物に押しつけることによって加飾フィルムとプラスチック成型物を接合させることを特徴とする加飾成型物の製造方法。
３．加飾フィルムに所定の形状を与える金型を有する真空成形機の金型内面に、ホットメルト接着剤層を加飾面の反対側に設けてなる成形性加飾フィルムを必要ならば加熱して加飾面が金型内面に対向するように装着し、次いで加飾フィルムの接着剤層側に、真空成形機の金型内に嵌合するように成型され、必要ならば加熱されたプラスチック成型物を接触させ、必要ならばプラスチック成型物及び／または真空成形機の金型を加熱しながら真空成型を行うと同時に、該プラスチック成型物を金型内に押し込み加飾フィルムを金型内面に密着させると同時に加飾フィルムと成型物を接合させることを特徴とする加飾成型物の製造方法。
４．プラスチック成型物を加飾フィルムに接合後、該プラスチック成型物を金型内で僅かに後退させ、生じたキャビティーに気体を圧入する１項ないし３項記載の加飾成型物の製造方法。
５．プラスチック成型物を加飾フィルムに接合した後、さらに加熱する１項ないし４項記載の加飾成型物の製造方法。」
が提供される。
【０００８】
本発明の加飾成型物の製造方法によれば、加飾フィルムは高温で高圧の射出成型用樹脂に直接触れることが無いので、耐熱性の無い加飾フィルムでもそのまま射出成型物に容易に接合できるため、射出成型物の加飾を安価に、また使用するフィルムの制限を受けることななく行うことが出来る。さらに複雑な形状のプラスチック成型物に直接接着剤を塗布する必要がないために、プラスチック成型物の加飾を生産性よく、安価に行うことが出来る。
【０００９】
【発明の実施の形態】
本発明に使用できる加飾フィルムは、ＰＶＣ、ポリカーボネート、ポリスチレン系、ポリエステル系、ポリウレタン系、アクリル系、ポリオレフィン系などの樹脂からなる基材フィルムに顔料や染料を練りこんで着色したものや、これらの透明なまたは着色した樹脂フィルムに塗装を施したり印刷により美粧効果や絵柄を付加したもの、さらには、その上に透明なフィルムを積層したものなどが使用される。そして加飾フィルムの裏面にはホットメルト接着剤層が設けられている。
【００１０】
基材フィルムへの塗装ないしは印刷は単層であっても複層であってもよい。例えば、塗装による連続した着色層の上に印刷で絵柄を形成したもの、さらにその上に透明フィルム層を積層したもの、顔料や金属粉等の光輝材を含む塗料を塗装した上に透明ないしは半透明の無色ないしは着色したフィルム層を形成したものなどを挙げることができる。
【００１１】
加飾フィルムの裏面に適用されるホットメルト接着剤としては、加熱により単に溶融し融着するものでも、融着と同時に架橋硬化するものであってもよく、特に制限はないが、射出された成型用樹脂の圧入時の温度以下で融着できることが必要である。
【００１２】
また、ホットメルト接着剤は、基材フィルム及びプラスチック成型物表面の両者に熱接着性のよいものが好適である。さらに、ホットメルト層と基材フィルムとの間、またはホットメルト接着剤とプラスチック成型品との間の付着性を高めるためにプライマー層が設けられる。例えば、ポリオレフィン樹脂系基材フィルムや成型物が使用される場合には、ホットメルト接着剤と基材フィルム間、またはホットメルト接着剤表面にハロゲン化ポリオレフィン樹脂系プライマー層を設けることなどが行われる。
【００１３】
ホットメルト接着剤としては、エチレン−酢酸ビニル樹脂系、ポリエステル樹脂系、エポキシ樹脂系、ポリウレタン樹脂系、ポリアミド樹脂系、アクリル樹脂系、ポリオレフィン樹脂系、ポリスチレン樹脂系などのものが使用できる。これらのホットメルト接着剤には、ロジン、水添ロジン、石油樹脂、水添石油樹脂などのタッキファイヤー、流動調整剤などの添加剤など通常ホットメルト接着剤で用いられる添加剤を使用してもよい。また、加熱時に架橋し硬化させるために、ホットメルト接着剤の構成成分と加熱により反応する硬化剤を加えてもよい。例えば、ホットメルト接着剤組成中にカルボキシル基、水酸基、アミノ基などの官能基が含まれる場合、ブロック化イソシアネート硬化剤、エポキシ系硬化剤などの硬化剤、メラミンホルムアルデヒド樹脂硬化剤と組み合わせてもよいし、またはその逆の組み合わせでもよい。さらに、熱により活性化する潜在触媒などを組み合わせて使用してもよい。
【００１４】
基材フィルムにホットメルト接着剤層を設けるには、ホットメルト接着剤を溶融して基材フィルム上に塗工する方法、フィルム状の接着剤を基材フィルムに積層する方法、接着剤を溶剤に溶解ないしは分散して基材フィルム上に塗工する方法など公知の方法を用いて行えばよい。
【００１５】
本発明に用いる加飾フィルムは、ホットメルト接着剤層を基材フィルム上に設けた後、ロール状に巻き取るかもしくは一定の大きさのシート状にカットして使用される。またシート状にカットしたフィルムにホットメルト接着剤を塗工したものを使用することもできる。
【００１６】
本発明によれば、プラスチック成型物に加飾フィルムを接合するには、前記した１〜３項の方法で行われ、真空成型は従来から当該技術分野で公知の方法によって行うことができる。本発明の方法において加飾フィルム、雌型の金型、及びプラスチック成型物のいずれかはそれぞれ常温からホットメルト接着剤に適用される所定温度より２０℃高い程度の温度範囲に保たれる。プラスチック成型物は、雌型の金型に最大圧力０．１〜５ＭＰａ程度の圧力で１〜１２０秒程度の時間押し付けることが好ましい。さらに、前記した４項のように加飾フィルムをプラスチック成型物に接合した後、該プラスチック成型物を１００μｍから１ｍｍ程度後退させて雌型より離し、生じたキャビティーに圧縮気体を注入して製造してもよい。圧縮気体の圧力は、０．１〜１ＭＰａ、温度は常温〜ホットメルト接着剤に適用される所定温度より２０℃高い程度の温度範囲であることが好ましい。この操作により雌型の金型とプラスチック成型物の嵌合が多少不正確でも加飾フィルムをプラスチック成型物上に正確に転写し接合することができる。また、ホットメルト接着剤の融着が押し付け終了時には不充分であっても、本操作により融着を完全なものにすることができる。
【００１７】
また、前記した１〜４項でプラスチック成型物に加飾フィルムを接合した後、ホットメルト接着剤が架橋硬化型の場合得られたプラスチック成型物を硬化温度以上に５〜１２０分程度加熱することにより架橋反応を完結させてもよい。
【００１８】
【実施例】
以下、実施例により本発明をさらに詳しく説明する。
【００１９】
実施例１
厚さ１００μｍのフッ化ビニリデンとメチルメタクリレートとの共重合樹脂フィルムに、アクリック＃２０００のシルバーメタリック塗色（関西ペイント社製アクリル樹脂塗料）を乾燥膜厚３０μｍとなるようにスプレー塗装し、１００℃で１０分間加熱した。次いで、メタリック塗色塗装面にホットメルト接着剤ＪＥＬＣＯＭ ＡＤ−ＨＭ６（十條ケミカル社製）を乾燥膜厚５０μｍになるようにスクリーン印刷し、６０℃で１分間加熱し、ホットメルト接着剤付き加飾フィルムを得た。得られた加飾フィルムを所望の形状を与えるように形作られた真空成型用雌金型に、フッ化ビニリデンとメチルメタクリレート共重合樹脂フィルムの加飾面が金型面に対向するように装着し、フィルム表面温度を１２０℃に加熱した後に真空成型を行い加飾フィルムに所望の形状を与えた。次いで、この雌金型内に予めこの金型の内面に嵌合するように成型されたＡＢＳ樹脂成型品を挿入し、１００℃、プレス圧１．５ＭＰａで１０秒間圧着した後真空成型機の雌金型よりＡＢＳ樹脂成型物を取り出した。
成型物表面は加飾フィルムで完全に覆われかつ、ＡＢＳ樹脂成型物と加飾フィルムが強固に接合した加飾成型物が得られた。
【００２０】
実施例２
実施例１で使用した接着剤付き加飾フィルムを加飾フィルムを所望の形状を与えるように形作られた真空成型用雌金型にフッ化ビニリデンとメチルメタクリレート共重合体樹脂フィルム面が金型面に対向するように装着し、次いで、ホットメルト接着剤層表面に１００℃に加熱した予めこの金型の内面に嵌合するように成型されたＡＢＳ樹脂成型品を接触させて真空成型を行うと同時に成型品を雌金型内に押し込み、プレス圧２ＭＰａで５秒間圧着した後、真空成型機の雌金型より成型物を取り出した。成型物表面は加飾フィルムで完全に覆われかつ、ＡＢＳ樹脂成型物と加飾フィルムが強固に接合した加飾成型物が得られた。
【００２１】
実施例３
実施例１において、フッ化ビニリデンとメチルメタクリレートとの共重合樹脂フィルムの代りに着色面と接する側に塩素化ポリプロピレンよりなるプライマー層を２μｍ設けたポリプロピレンフィルムを用いる以外は実施例１と全く同様にして作成した加飾フィルムを所望の形状を与えるように形作られたプレス成型用雌金型にポリプロピレンフィルム面が金型面に対向するように装着し、次いでホットメルト接着剤層表面に１２０℃に加熱した予めこの金型の内面に嵌合するように成型されたポリプロピレン樹脂成型品を接触させて、プレス圧１ＭＰａで加飾フィルムを雌金型内面に押しつけさらに５秒間この圧力を保った後、成型物を約０．５ｍｍ雌金型より引き離し、雌金型側より１２０℃、０．３ＭＰａの圧搾空気を５秒間吹き込んだ後、成型機の雌金型より成型物を取り出した。成型物表面は加飾フィルムで完全に覆われかつ、ポリプロピレン成型物と加飾フィルムが強固に接合した加飾成型物が得られた。
【００２２】
【発明の効果】
本発明によれば、耐熱性のない加飾フィルムでも複雑な形状のプラスチック成型物にそのまま容易に接合できるため、加飾成型物を安価にまたフィルムの制限を受けることなく製造することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for applying a cosmetic to the surface of a plastic molded product.
[0002]
[Prior art and problems]
Conventionally, coating with a paint is generally performed in order to apply cosmetics to the surface of a plastic molded product. However, this painting takes a lot of man-hours, requires a large space for installing a booth and baking oven for painting, and requires a lot of energy to operate them. In addition, there are various problems such as dust getting on during the painting work.
[0003]
A method of attaching a flexible decorative film has been proposed as an external decoration method instead of painting, but it is difficult to apply a decorative film to the surface in the case of plastic molded products with complicated shapes. There is a problem that there is.
[0004]
In addition, a method of manufacturing a plastic part having a cosmetic surface by injection molding in which a decorative film is inserted into a mold and molten resin is injected from the back surface of the decorative surface (for example, Japanese Patent Laid-Open No. 63-21671, Japanese Laid-Open Patent Publication No. 63-128469 and Japanese Patent Publication No. 2-503077 have also been proposed. However, in these methods, since the high-temperature resin (generally 200 ° C. or higher) melted directly on the decorative film is pressed at a high pressure, the decorative film does not melt and flow or change in quality during injection molding. The resin film that can be used is limited. In addition, when applying a resin film with low heat resistance to these methods, a thick heat-resistant sheet is laminated on the back side of the film layer for decoration, and the molten resin is decorated during injection molding. There is a problem that it is necessary to avoid direct contact with the film surface, which increases the cost.
[0005]
Furthermore, in addition to the above-described method, a plastic molded product molded into a shape that fits into the mold and coated with an adhesive in a female mold having a decorative film loaded on the inner surface of the mold. A method of joining a decorative film and a plastic molded product by pressing is also known. However, there are many cases where it is difficult to uniformly apply the adhesive to the surface of a plastic molded product having a complicated shape, and there is a problem that a long time is required for production.
[0006]
[Means for Solving the Problems]
As a result of intensive studies to solve the above-mentioned problems, the present inventor has completed the present invention.
[0007]
Thus, according to the present invention,
“1. If necessary, heat a moldable decorative film in which a hot melt adhesive layer is provided on the opposite side of the decorative surface on the inner surface of a female mold that can give the decorative film a predetermined shape. The decorative mold is mounted so that it faces the inner surface of the female mold, and then molded so as to fit in the female mold, and if necessary, a heated plastic molding is heated if necessary. A method for producing a decorative molded product, characterized in that a predetermined shape is obtained by press-fitting into a mold and pressing the decorative film against the inner surface of the female mold, and at the same time the decorative film and the plastic molded product are joined.
2. A moldable decorative film with a hot melt adhesive layer provided on the opposite side of the decorative surface on the mold inner surface of a vacuum forming machine having a mold that gives the decorative film a predetermined shape. Installed so as to face the inner surface, vacuum forming while heating if necessary, and after adhering the decorative film to the inner surface of the vacuum molding machine mold, it is molded to fit into the mold, necessary Then, if necessary, pressurize the heated plastic molding into the heated mold and press the decorative film against the plastic molding to join the decorative film and the plastic molding. Manufacturing method of moldings.
3. If necessary, heat a moldable decorative film with a hot melt adhesive layer provided on the opposite side of the decorative surface on the mold inner surface of a vacuum forming machine having a mold that gives the decorative film a predetermined shape. Mounted so that the decorative surface faces the inner surface of the mold, and then molded on the adhesive layer side of the decorative film so as to fit into the mold of the vacuum forming machine, and if necessary, heated plastic molding If necessary, vacuum molding is performed while heating the plastic molding and / or vacuum mold, if necessary, and at the same time, the plastic molding is pushed into the mold and the decorative film is adhered to the inner surface of the mold. A method for producing a decorative molded product, characterized in that a decorative film and a molded product are joined simultaneously.
4). The method for producing a decorative molded product according to 1 to 3, wherein the plastic molded product is joined to a decorative film, the plastic molded product is slightly retracted in a mold, and gas is press-fitted into the generated cavity.
5. The method for producing a decorative molded product according to 1 to 4, wherein the plastic molded product is further heated after being joined to the decorative film. "
Is provided.
[0008]
According to the method for producing a decorative molded product of the present invention, the decorative film does not directly touch the high-pressure injection molding resin at high temperature, so even a decorative film without heat resistance can be easily joined to the injection molded product as it is. Therefore, it is possible to decorate the injection-molded product at a low cost and without being restricted by the film to be used. Furthermore, since it is not necessary to apply an adhesive directly to a plastic molded product having a complicated shape, the plastic molded product can be decorated with high productivity and at low cost.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The decorative film that can be used in the present invention includes a base film made of PVC, polycarbonate, polystyrene, polyester, polyurethane, acrylic, polyolefin, or the like, which is colored by kneading a pigment or dye, or these Such a transparent or colored resin film that has been coated or added with a cosmetic effect or a pattern by printing, or a laminate of a transparent film thereon, or the like is used. A hot melt adhesive layer is provided on the back surface of the decorative film.
[0010]
The coating or printing on the base film may be a single layer or multiple layers. For example, a pattern formed by printing on a continuous colored layer by painting, a layer on which a transparent film layer is laminated, a paint containing a bright material such as pigment or metal powder, and a transparent or semi-finished coating Examples include a transparent colorless or colored film layer.
[0011]
The hot melt adhesive applied to the back surface of the decorative film may be one that is simply melted and fused by heating, or one that is crosslinked and cured simultaneously with the fusion, and is not particularly limited. It is necessary to be able to be fused at a temperature equal to or lower than the temperature at which the molding resin is press-fitted.
[0012]
In addition, a hot melt adhesive having good thermal adhesiveness on both the base film and the plastic molding surface is suitable. Furthermore, a primer layer is provided to enhance adhesion between the hot melt layer and the base film or between the hot melt adhesive and the plastic molded product. For example, when a polyolefin resin base film or a molded product is used, a halogenated polyolefin resin primer layer is provided between the hot melt adhesive and the base film or on the surface of the hot melt adhesive. .
[0013]
Examples of the hot melt adhesive include ethylene-vinyl acetate resin, polyester resin, epoxy resin, polyurethane resin, polyamide resin, acrylic resin, polyolefin resin, and polystyrene resin. For these hot melt adhesives, additives commonly used in hot melt adhesives such as rosin, hydrogenated rosin, petroleum resins, tackifiers such as hydrogenated petroleum resins, and additives such as flow regulators may be used. Good. Moreover, in order to bridge | crosslink and harden | cure at the time of a heating, you may add the hardening | curing agent which reacts with the structural component of a hot-melt-adhesive agent by heating. For example, when a functional group such as a carboxyl group, a hydroxyl group, or an amino group is contained in the hot melt adhesive composition, it may be combined with a curing agent such as a blocked isocyanate curing agent or an epoxy curing agent, or a melamine formaldehyde resin curing agent. Or vice versa. Furthermore, a latent catalyst that is activated by heat may be used in combination.
[0014]
In order to provide a hot melt adhesive layer on a base film, a method of melting the hot melt adhesive and coating it on the base film, a method of laminating a film-like adhesive on the base film, and a solvent as a solvent A known method such as a method of dissolving or dispersing in a base material film and applying it to the base film may be used.
[0015]
The decorative film used in the present invention is used after a hot melt adhesive layer is provided on a substrate film and then wound into a roll or cut into a sheet having a certain size. Moreover, what applied the hot melt adhesive to the film cut into the sheet form can also be used.
[0016]
According to this invention, in order to join a decorative film to a plastic molding, it is performed by the above-mentioned method of 1-3, and vacuum molding can be conventionally performed by a well-known method in the said technical field. In the method of the present invention, any one of the decorative film, the female mold, and the plastic molded product is maintained in a temperature range of about 20 ° C. higher than a predetermined temperature applied to the hot melt adhesive from room temperature. The plastic molded product is preferably pressed against a female mold at a maximum pressure of about 0.1 to 5 MPa for a time of about 1 to 120 seconds. Further, after the decorative film is joined to the plastic molded product as described in the item 4 above, the plastic molded product is retreated from 100 μm to about 1 mm to be separated from the female mold, and compressed gas is injected into the generated cavity. May be. The pressure of the compressed gas is preferably 0.1 to 1 MPa, and the temperature is preferably in the temperature range of about 20 ° C. higher than the normal temperature to a predetermined temperature applied to the hot melt adhesive. By this operation, even if the fitting between the female mold and the plastic molding is somewhat inaccurate, the decorative film can be accurately transferred and bonded onto the plastic molding. Further, even if the hot melt adhesive is not sufficiently fused at the end of pressing, the fusion can be completed by this operation.
[0017]
In addition, after the decorative film is bonded to the plastic molded product in the above-described items 1 to 4, the obtained plastic molded product is heated to the curing temperature or higher for about 5 to 120 minutes when the hot melt adhesive is a cross-linking curable type. The crosslinking reaction may be completed by
[0018]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples.
[0019]
Example 1
Acrylic # 2000 silver metallic paint (acrylic resin paint manufactured by Kansai Paint Co., Ltd.) is spray-coated on a copolymer resin film of vinylidene fluoride and methyl methacrylate having a thickness of 100 μm to a dry film thickness of 30 μm, and 100 ° C. For 10 minutes. Next, hot-melt adhesive JELCOM AD-HM6 (manufactured by Tojo Chemical Co., Ltd.) was screen-printed on the metallic coating surface to a dry film thickness of 50 μm, heated at 60 ° C. for 1 minute, and decorated with hot-melt adhesive A film was obtained. The obtained decorative film is attached to a vacuum mold female mold shaped to give a desired shape so that the decorative surface of vinylidene fluoride and methyl methacrylate copolymer resin film faces the mold surface. After heating the film surface temperature to 120 ° C., vacuum forming was performed to give the decorative film a desired shape. Next, an ABS resin molded product molded so as to be fitted into the inner surface of the mold in advance is inserted into the female mold, and after pressure bonding at 100 ° C. and a press pressure of 1.5 MPa for 10 seconds, the female of the vacuum molding machine is inserted. The ABS resin molding was taken out from the mold.
The surface of the molded product was completely covered with the decorative film, and a decorative molded product in which the ABS resin molded product and the decorative film were firmly joined was obtained.
[0020]
Example 2
The vinylidene fluoride and methyl methacrylate copolymer resin film surface is the mold surface of the vacuum-molded female mold formed so as to give the decorative film the desired shape with the decorative film with adhesive used in Example 1 When the vacuum molding is performed by contacting an ABS resin molded product that is preliminarily molded to fit the inner surface of the mold heated to 100 ° C. on the surface of the hot melt adhesive layer. At the same time, the molded product was pushed into the female mold and pressed with a press pressure of 2 MPa for 5 seconds, and then the molded product was taken out from the female mold of the vacuum molding machine. The surface of the molded product was completely covered with the decorative film, and a decorative molded product in which the ABS resin molded product and the decorative film were firmly joined was obtained.
[0021]
Example 3
Example 1 is the same as Example 1 except that a polypropylene film having a primer layer made of chlorinated polypropylene of 2 μm provided on the side in contact with the colored surface is used instead of the copolymer resin film of vinylidene fluoride and methyl methacrylate. The decorative film prepared in this manner is mounted on a female mold for press molding so as to give a desired shape so that the polypropylene film surface faces the mold surface, and then the hot melt adhesive layer surface is heated to 120 ° C. A heated polypropylene resin molded product that is preliminarily molded to fit the inner surface of the mold is brought into contact, and the decorative film is pressed against the inner surface of the female mold at a press pressure of 1 MPa, and this pressure is maintained for another 5 seconds. The molded product is pulled away from the female mold of about 0.5 mm, and compressed air of 120 ° C. and 0.3 MPa is blown from the female mold side for 5 seconds. After, it was taken out molded product from the female die molding machine. The surface of the molded product was completely covered with a decorative film, and a decorative molded product in which the polypropylene molded product and the decorative film were firmly joined was obtained.
[0022]
【The invention's effect】
According to the present invention, even a decorative film having no heat resistance can be easily joined to a plastic molded product having a complicated shape as it is, so that the decorative molded product can be manufactured inexpensively and without being restricted by the film.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34220799A JP4460697B2 (en) | 1999-12-01 | 1999-12-01 | Manufacturing method of decorative moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34220799A JP4460697B2 (en) | 1999-12-01 | 1999-12-01 | Manufacturing method of decorative moldings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001150534A JP2001150534A (en) | 2001-06-05 |
| JP4460697B2 true JP4460697B2 (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP34220799A Expired - Fee Related JP4460697B2 (en) | 1999-12-01 | 1999-12-01 | Manufacturing method of decorative moldings |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20030077263A (en) * | 2002-03-26 | 2003-10-01 | 장승현 | Synthetic resins adhesive product and thereof adhesive method |
| WO2004076159A1 (en) * | 2003-02-27 | 2004-09-10 | Sunstar Giken Kabushiki Kaisha | Method for producing automobile interior panel |
| JP2011198886A (en) * | 2010-03-18 | 2011-10-06 | Fuji Electric Co Ltd | Solar battery module, and method of manufacturing the same |
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