JP2517490B2 - Manufacturing method of molded product with decorative film - Google Patents
Manufacturing method of molded product with decorative filmInfo
- Publication number
- JP2517490B2 JP2517490B2 JP3059351A JP5935191A JP2517490B2 JP 2517490 B2 JP2517490 B2 JP 2517490B2 JP 3059351 A JP3059351 A JP 3059351A JP 5935191 A JP5935191 A JP 5935191A JP 2517490 B2 JP2517490 B2 JP 2517490B2
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- decorative film
- hole
- molding
- mold
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/044—Injection moulding
- H01H2229/048—Insertion moulding
Landscapes
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Switches (AREA)
- Push-Button Switches (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、貫通孔を有する成形品
の貫通孔部分に、たるみなく美麗な装飾フィルムを融着
することのできる装飾フィルム付き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 method for producing a molded product with a decorative film, which allows a beautiful decorative film to be fused to the through hole portion of the molded product having a through hole without sagging.
【０００２】[0002]
【従来の技術】電子レンジ・電子ジャーなどの各種電化
製品のタッチスイッチのほか、各種ＯＡ機器、通信機器
などのタッチスイッチとして、貫通孔を有する成形品の
表面に装飾フィルムが貼付されたものが利用される場合
がある。第７図は、その一例を示すタッチスイッチの断
面図であり、１は貫通孔、２は成形品、３は装飾フィル
ム、４はタクトスイッチである。このタッチスイッチ
は、装飾フィルムがフレキシブルなものであるため、成
形品２の貫通孔１を指などで押圧することによって、そ
の下部に設けたタクトスイッチ４の操作が可能なもので
ある。2. Description of the Related Art In addition to touch switches for various electric appliances such as microwave ovens and electronic jars, touch switches for various office automation equipment, communication equipment, etc., in which a decorative film is attached to the surface of a molded product having through holes It may be used. FIG. 7 is a sectional view of a touch switch showing an example thereof, 1 is a through hole, 2 is a molded product, 3 is a decorative film, and 4 is a tact switch. Since the touch switch has a flexible decorative film, the tact switch 4 provided below the touch switch can be operated by pressing the through hole 1 of the molded product 2 with a finger or the like.
【０００３】従来、このような装飾フィルム付き成形品
の製造方法としては、あらかじめ成形された貫通孔を有
する成形品の表面に、装飾フィルムを粘着剤により貼付
する方法がある。Conventionally, as a method of manufacturing such a molded product with a decorative film, there is a method of attaching a decorative film to the surface of a molded product having a through-hole formed in advance with an adhesive.
【０００４】しかし、前記したような装飾フィルム付き
成形品の製造方法は、次のような欠点があり、満足し得
るものとは言い難いものである。 （a)装飾フィルムを人手によって貼付するので、所定の
位置に正確に貼付するのが難しく、位置ずれが生じやす
い。 (b)装飾フィルムを粘着剤を用いて貼付するので、使用
中に剥がれる恐れがある。 (c)フィルムを人手によって一枚ごとに貼付するので、
製造に手間を要し作業性が劣る。However, the above-mentioned method for producing a molded article with a decorative film has the following drawbacks, and it cannot be said to be satisfactory. (A) Since the decorative film is manually attached, it is difficult to accurately attach the decorative film at a predetermined position, and the positional deviation easily occurs. (b) Since the decorative film is attached using an adhesive, it may peel off during use. (c) Since each film is manually attached,
Manufacture requires time and workability is poor.
【０００５】[0005]
【発明の解決すべき課題】そこで本発明者らは、前記し
た諸欠点を解決するために、従来公知のいわゆる成形同
時インサート法に着目し、種々実験・考察を行った。Therefore, in order to solve the above-mentioned drawbacks, the present inventors have paid attention to a conventionally known so-called simultaneous molding insert method and conducted various experiments and consideration.
【０００６】この成形同時インサート法とは、金型内部
の所定の位置に正確に位置決めされた装飾フィルムを、
成形品の成形と同時に、成形品の表面に融着させる方法
である。したがって、この方法を利用すると、前記の欠
点はすべて解決でき、成形品の所定の位置に正確に、か
つ強固に、しかも作業性良く装飾フィルムを貼付するこ
とが可能となる。This molding simultaneous insert method is a method for forming a decorative film accurately positioned at a predetermined position inside the mold.
This is a method in which the surface of the molded product is fused at the same time as the molding of the molded product. Therefore, by using this method, it is possible to solve all of the above-mentioned drawbacks, and it becomes possible to attach the decorative film to the predetermined position of the molded product accurately, firmly and with good workability.
【０００７】しかし、成形同時インサート法を利用し
て、貫通孔を有する成形品の表面に装飾フィルムを融着
させる場合、新たに次のような問題点が生じることが判
明した。すなわち、貫通孔を有する成形品の貫通孔部分
に、成形品の成形と同時に装飾フィルムを融着させる場
合、成形品の樹脂収縮、つまり成形用樹脂を成形して
（図４参照）金型から取り出して大気中に放冷しておく
と成形品は金型寸法より小さくなるため、貫通孔に融着
された装飾フィルムがたるんでしまう（図５参照）とい
う問題点が生じた。However, it has been found that the following problems newly arise when the decorative film is fused on the surface of a molded product having a through hole by using the molding simultaneous insert method. That is, when the decorative film is fused to the through-hole portion of the molded product having the through-hole at the same time when the molded product is molded, resin shrinkage of the molded product, that is, molding resin is molded (see FIG. 4) from the mold. Since the molded product becomes smaller than the mold size when taken out and allowed to cool in the air, the decorative film fused to the through hole sags (see FIG. 5).
【０００８】この発明は以上のような欠点を解消し、成
形品の貫通孔部分にたるみのない美麗な装飾フィルムを
融着させることができる装飾フィルム付き成形品の製造
方法を提供することを目的とする。It is an object of the present invention to solve the above-mentioned drawbacks and to provide a method for producing a molded product with a decorative film, by which a beautiful decorative film without sagging can be fused to the through-hole portion of the molded product. And
【０００９】[0009]
【課題を解決するための手段】 本発明は、前記した目
的を達成するために、貫通孔を有する成形品を成形する
金型内に装飾フィルムをはさみ込み、成形品の成形と同
時に装飾フィルムを融着させる成形同時インサート法に
おいて、成形品の貫通孔周囲にあたる部分に凸部または
凹部が形成された金型を用い、成形時の樹脂の充填によ
り貫通孔周囲で装飾フィルムを伸張させて金型の凸部ま
たは凹部形状に沿わせるように構成した。Means for Solving the Problems In order to achieve the above-mentioned object, the present invention inserts a decorative film into a mold for molding a molded product having a through hole, and forms a decorative film simultaneously with molding of the molded product. In the molding simultaneous insert method of fusion bonding , the convex part or the part around the through hole of the molded product
By using a mold with recesses and filling with resin during molding.
The decorative film is stretched around the perforation hole to
Alternatively, it is configured to conform to the shape of the recess .
【００１０】[0010]
【００１１】以下、本発明をさらに詳細に説明する。本
発明は、成形時に装飾フィルムを成形用樹脂の樹脂収縮
分以上に伸張させ、成形品の成形と同時に、成形品の表
面の貫通孔部分に装飾フィルムを融着するものである。The present invention will be described in more detail below. In the present invention, the decorative film is stretched more than the resin shrinkage of the molding resin during molding, and the decorative film is fused to the through-hole portion on the surface of the molded product at the same time when the molded product is molded.
【００１２】装飾フィルムとしては、通常の成形同時イ
ンサート法に利用していたものと同様のものを用いると
よい。たとえば、プラスチックスフィルムなどの基体シ
ート31上に、図柄層32や接着剤層33などを順次積層した
ものを利用することができる（図６参照）。As the decorative film, it is preferable to use the same film as that used in the ordinary simultaneous molding and inserting method. For example, a base sheet 31 such as a plastics film on which a pattern layer 32, an adhesive layer 33 and the like are sequentially laminated can be used (see FIG. 6).
【００１３】金型としては、成形時に装飾フィルムが成
形用樹脂の成形収縮分以上に伸張する形状となるように
設計する。The mold is designed so that the decorative film has a shape which expands more than the molding shrinkage of the molding resin during molding.
【００１４】たとえば、金型は、成形品２の貫通孔１と
装飾フィルム３とが接する面の周囲に凸部５または凹部
を有するような形状の成形品（図１および図２参照）が
得られるようにするとよい。この金型の凸部または凹部
は、装飾フィルムを伸張させるための機能を有する。ま
た、この凸部または凹部の形状は、当然のことながら、
得られる成形品の外形として表現されるものなので、意
匠的な効果も考慮して設計する必要がある。For example, the mold is a molded product (see FIGS. 1 and 2) having a shape having a convex portion 5 or a concave portion around the surface where the through hole 1 of the molded product 2 and the decorative film 3 are in contact with each other. You should be able to do it. The convex portion or the concave portion of this mold has a function of stretching the decorative film. Further, the shape of the convex portion or the concave portion is, of course,
Since it is expressed as the outer shape of the obtained molded product, it is necessary to design in consideration of the design effect.
【００１５】なお、前記金型の凸部または凹部の形状
は、本発明者らの考察および数多くの実験結果による
と、次の(1)〜(5)式を満足する高さａ，幅b1，b2のもの
が本発明の目的に対して好適である。（ただし、金型の
型閉め時に装飾フィルム３が型閉め力によって金型に押
し伸ばされないものとする。） L1Ｃ＜２｛ａ＋b1−（a2＋b1 2)1/2 ｝……(1) L2Ｃ＜２｛ａ＋b2−（a2＋b2 2)1/2 ｝……(2) ０＜ａ≦５（mm） ……(3) ０＜b1≦５（mm） ……(4) ０＜b2≦５（mm） ……(5)The shape of the convex portion or the concave portion of the mold is, according to the consideration of the present inventors and many experimental results, a height a and a width b satisfying the following equations (1) to (5). Those of 1 and b 2 are suitable for the purpose of the present invention. (However, it is assumed that the decorative film 3 is not extended to the mold by the mold closing force when the mold is closed.) L 1 C <2 {a + b 1 − (a 2 + b 1 2 ) 1/2 } ... … (1) L 2 C <2 {a + b 2 − (a 2 + b 2 2 ) 1/2 } …… (2) 0 <a ≦ 5 (mm) …… (3) 0 <b 1 ≦ 5 (mm ) …… (4) 0 <b 2 ≦ 5 (mm) …… (5)
【００１６】ここで、 L1は、成形品の貫通孔の縦方向の長さに対応した長さ L2は、成形品の貫通孔の横方向の長さに対応した長さ Ｃは、成形用樹脂の成形収縮率 ａは、成形品の凸部または凹部の高さ b1は、成形品の凸部または凹部の縦方向の幅 b2は、成形品の凸部または凹部の横方向の幅 をそれぞれ示す（図３参照）。Here, L 1 is a length L 2 corresponding to the longitudinal length of the through hole of the molded product, L 2 is a length C corresponding to the lateral length of the through hole of the molded product, The molding shrinkage a of the resin for use is the height b 1 of the protrusions or recesses of the molded product, the vertical width b 2 of the protrusions or recesses of the molded product, or the lateral width of the protrusions or recesses of the molded product. Each width is shown (see Figure 3).
【００１７】成形前の型閉時の凸部または凹部内におけ
る装飾フィルムの長さは、 L1＋２（a2＋b1 2)1/2 である。これが成形時の樹脂の充填により、装飾フィル
ムは凸部または凹部形状に沿うので、その長さは、 L1＋２（ａ＋b1） となる。したがって、成形時の装飾フィルムの伸びは、 ２｛ａ＋b1−（a2＋b1 2)1/2 ｝ となる。The length of the decorative film in the convex portion or the concave portion when the mold is closed before molding is L 1 +2 (a 2 + b 1 2 ) 1/2 . The length of the decorative film is L 1 +2 (a + b 1 ) because the decorative film is formed along the shape of the protrusions or recesses due to the resin filling during molding. Thus, elongation of the decorative film at the time of molding, 2 - the {a + b 1 (a 2 + b 1 2) 1/2}.
【００１８】一方、成形後の成形品の貫通孔における成
形収縮量は、 L1Ｃ である。したがって、成形収縮分以上に装飾フィルムを
伸張させるためには、 L1Ｃ＜２｛ａ＋b1−（a2＋b1 2)1/2 ｝……(1) の条件を満たすことが必要である。On the other hand, the molding shrinkage amount in the through hole of the molded product after molding is L 1 C. Therefore, in order to stretch the decorative film beyond the amount of molding shrinkage, it is necessary to satisfy the condition of L 1 C <2 {a + b 1 − (a 2 + b 1 2 ) 1/2 } (1). .
【００１９】横方向についても同様に、 L2Ｃ＜２｛ａ＋b2−（a2＋b2 2)1/2 ｝……(2) また、ａ，b1，b2は、実用上、５mm以下であることが望
ましいので、 ０＜ａ≦５（mm） ……(3) ０＜b1≦５（mm） ……(4) ０＜b2≦５（mm） ……(5) の条件を満たすことが必要である。これは、５mmを越え
ると、装飾フィルムが伸張時に破損する恐れなどがある
からである。Similarly in the lateral direction, L 2 C <2 {a + b 2 − (a 2 + b 2 2 ) 1/2 } (2) Also, a, b 1 and b 2 are practically 5 mm. Since it is desirable that it is less than or equal to 0 <a ≦ 5 (mm) …… (3) 0 <b 1 ≦ 5 (mm) …… (4) 0 <b 2 ≦ 5 (mm) …… (5) It is necessary to meet the conditions. This is because if it exceeds 5 mm, the decorative film may be damaged during stretching.
【００２０】[0020]
【実施例】厚さ 125μｍのポリエステルフィルム上に、
ポリエステル系インキを用いてスクリーン印刷にて図柄
層を形成し、その上にアクリル系インキを用いて接着剤
層を形成し、装飾フィルムを得た。この装飾フィルムを
116mm×70mm角に断裁し、次に示す貫通孔の周囲に凸部
を有する成形品を成形するための金型内にセットした
後、ＡＢＳ樹脂を用いて射出成形を行った。Example: On a 125 μm thick polyester film,
A pattern layer was formed by screen printing using a polyester ink, and an adhesive layer was formed thereon using an acrylic ink to obtain a decorative film. This decorative film
After cutting into a 116 mm × 70 mm square and setting in a mold for molding a molded product having convex portions around the through holes shown below, injection molding was performed using ABS resin.
【００２１】L1＝30(mm) L2＝30(mm) Ｃ＝0.006(mm) ａ＝0.5(mm) b1＝1.5(mm) b2＝1.5(mm)L 1 = 30 (mm) L 2 = 30 (mm) C = 0.006 (mm) a = 0.5 (mm) b 1 = 1.5 (mm) b 2 = 1.5 (mm)
【００２２】その結果、装飾フィルムがたるみなく美麗
に貫通孔の周囲に融着された成形品が得られた。As a result, a molded product was obtained in which the decorative film was beautifully fused around the through hole without sagging.
【００２３】[0023]
【発明の効果】 本発明の装飾フィルム付き成形品の製
造方法は、貫通孔を有する成形品を成形する金型内に装
飾フィルムをはさみ込み、成形品の成形と同時に装飾フ
ィルムを融着させる成形同時インサート法において、成
形品の貫通孔周囲にあたる部分に凸部または凹部が形成
された金型を用い、成形時の樹脂の充填により貫通孔周
囲で装飾フィルムを伸張させて金型の凸部または凹部形
状に沿わせるように構成されているので、成形品の貫通
孔の周囲に装飾フィルムがたるみなく融着された貫通孔
を有する成形品を得ることができるものである。EFFECTS OF THE INVENTION The method for producing a molded product with a decorative film according to the present invention is a molding in which a decorative film is sandwiched in a mold for molding a molded product having a through hole, and the decorative film is fused at the same time when the molded product is molded. in simultaneous insert method, formed
Protrusions or recesses are formed around the through-holes of shaped products
The through hole circumference is filled by filling the resin during molding using
The decorative film is stretched to enclose the convex or concave shape of the mold.
Since it is configured to follow the shape, it is possible to obtain a molded product having a through hole in which the decorative film is fused without sagging around the through hole of the molded product.
【００２４】また、製造工程も簡略化でき、装飾フィル
ムの成形品への密着も強力なものができる。さらに、装
飾フィルムを成形品の所定の箇所に正確に位置決めして
融着することが容易にできる。Further, the manufacturing process can be simplified, and the adhesion of the decorative film to the molded product can be made strong. Furthermore, the decorative film can be easily positioned and fused at a predetermined position of the molded product.
【００２５】また、各種タッチスイッチ類に適用する際
に、スイッチ部に相当する部分を凸部にした場合、使用
者の指先が当たる部分が視覚的に明確になり、押圧感も
良好なものとなる。Further, when applying to various touch switches, when the portion corresponding to the switch portion is made to be a convex portion, the portion where the user's fingertip touches becomes visually clear and the feeling of pressing is good. Become.
【００２６】[0026]
【図１】本発明の製造方法によって得られる成形品の一
実施例を示す一部断面斜視図である。FIG. 1 is a partial cross-sectional perspective view showing an embodiment of a molded product obtained by the manufacturing method of the present invention.
【図２】本発明の製造方法によって得られる成形品の一
実施例の断面図である。FIG. 2 is a cross-sectional view of an example of a molded product obtained by the manufacturing method of the present invention.
【図３】本発明の製造方法によって得られる貫通孔を有
する成形品の貫通孔付近の斜視図である。FIG. 3 is a perspective view near a through hole of a molded product having a through hole obtained by the manufacturing method of the present invention.
【図４】装飾フィルム付き成形品の成形直後の断面図で
ある。FIG. 4 is a cross-sectional view of a molded product with a decorative film immediately after molding.
【図５】装飾フィルム付き成形品の成形収縮を生じた後
の断面図である。FIG. 5 is a cross-sectional view of a molded product with a decorative film after molding shrinkage has occurred.
【図６】本発明の製造方法に用いられる装飾フィルムの
断面図である。FIG. 6 is a cross-sectional view of a decorative film used in the manufacturing method of the present invention.
【図７】従来品の一例を示すタッチスイッチの断面図で
ある。FIG. 7 is a cross-sectional view of a touch switch showing an example of a conventional product.
１ 貫通孔 ２ 成形品 ３ 装飾フィルム ３１ 基体シート ３２ 図柄層 ３３ 接着剤層 ４ タクトスイッチ ５ 凸部 1 Through Hole 2 Molded Product 3 Decorative Film 31 Base Sheet 32 Design Layer 33 Adhesive Layer 4 Tact Switch 5 Projection
Claims (1)
に装飾フィルムをはさみ込み、成形品の成形と同時に装
飾フィルムを融着させる成形同時インサート法におい
て、成形品の貫通孔周囲にあたる部分に凸部または凹部
が形成される金型を用い、成形時の樹脂の充填により貫
通孔周囲で装飾フィルムを伸張させて金型の凸部または
凹部形状に沿わせることを特徴とする装飾フィルム付き
成形品の製造方法。1. In a molding simultaneous insert method in which a decorative film is sandwiched in a mold for molding a molded product having a through hole, and the decorative film is fused at the same time when the molded product is molded, a portion corresponding to the periphery of the through hole of the molded product. Convex or concave
Using a mold that can form
Extend the decorative film around the through hole to
A method for producing a molded product with a decorative film, characterized by conforming to the shape of a recess .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3059351A JP2517490B2 (en) | 1991-02-28 | 1991-02-28 | Manufacturing method of molded product with decorative film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3059351A JP2517490B2 (en) | 1991-02-28 | 1991-02-28 | Manufacturing method of molded product with decorative film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06218759A JPH06218759A (en) | 1994-08-09 |
| JP2517490B2 true JP2517490B2 (en) | 1996-07-24 |
Family
ID=13110777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3059351A Expired - Fee Related JP2517490B2 (en) | 1991-02-28 | 1991-02-28 | Manufacturing method of molded product with decorative film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2517490B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4657086B2 (en) * | 2005-11-11 | 2011-03-23 | 株式会社ユーシン | Switch device and case member of switch device |
| EP2347880A1 (en) | 2010-01-25 | 2011-07-27 | Koninklijke Philips Electronics N.V. | A method for producing a device comprising at least one displaceable operating member as well as such a device |
| JP5743931B2 (en) * | 2012-03-13 | 2015-07-01 | 三菱電機株式会社 | Sheet insert molding method and sheet insert molded product |
| JP6864396B1 (en) * | 2020-04-07 | 2021-04-28 | 株式会社三和スクリーン銘板 | Panel member and manufacturing method of panel member |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57116623A (en) * | 1981-01-12 | 1982-07-20 | Yoshio Sugibayashi | Injection molding machine for thermoplastic synthetic resin |
| JPS58127533U (en) * | 1982-02-22 | 1983-08-30 | 沖電気工業株式会社 | push button switch |
| JPS6031934A (en) * | 1983-07-30 | 1985-02-18 | Casio Comput Co Ltd | Board with decorative sheet |
-
1991
- 1991-02-28 JP JP3059351A patent/JP2517490B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06218759A (en) | 1994-08-09 |
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