JPH07329102A - In-mold molding method, or transfer molding method, and molds to be used therefor - Google Patents
In-mold molding method, or transfer molding method, and molds to be used thereforInfo
- Publication number
- JPH07329102A JPH07329102A JP12396194A JP12396194A JPH07329102A JP H07329102 A JPH07329102 A JP H07329102A JP 12396194 A JP12396194 A JP 12396194A JP 12396194 A JP12396194 A JP 12396194A JP H07329102 A JPH07329102 A JP H07329102A
- Authority
- JP
- Japan
- Prior art keywords
- film
- mold
- molding
- hot air
- molding method
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14286—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure means for heating the insert
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は樹脂の射出成形と同時に
フィルムをラミネートするインモールド成形方法、また
はフィルムに印刷された絵柄を成形品に転写する転写成
形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-mold molding method in which a film is laminated simultaneously with resin injection molding, or a transfer molding method in which a pattern printed on the film is transferred to a molded product.
【０００２】[0002]
【従来の技術】フィルムを加熱しないで、連続した一つ
の工程で行うインモールド成形、転写成形では、室温で
のフィルムの破断伸度以上の三次元的形状には適応する
のが困難であった。すなわち、平板状の二次元的形状へ
は適応できるが、深絞りのようなフィルムの加工を伴う
成形ではフィルムの破れが生じたり、フィルムがしわに
なるという問題点を有していた。2. Description of the Related Art In-mold molding and transfer molding, which are carried out in one continuous process without heating a film, are difficult to adapt to a three-dimensional shape exceeding the breaking elongation of the film at room temperature. . That is, although it can be applied to a flat plate-like two-dimensional shape, there are problems that the film breaks or the film becomes wrinkled in the molding accompanied by processing of the film such as deep drawing.
【０００３】これらの問題点を解決するためには、真空
成形などの別工程で成形したフィルムを射出成形用金型
内にインサートして成形する方法がとられていた。In order to solve these problems, a method has been adopted in which a film formed in a separate process such as vacuum forming is inserted into a mold for injection molding and molded.
【０００４】さらに、真空成形と射出成形を連続した一
つの工程としたものに、連続したシートを金型内に送り
込み、射出成形と同時に絵付などを行う方法としては、
例えば特開昭５９−２０２８３０号公報または特開平４
−９６４７号公報記載のようなものがある。Further, as a method of feeding a continuous sheet into a mold and performing painting at the same time as injection molding, in which vacuum molding and injection molding are performed as one continuous process,
For example, JP-A-59-202830 or JP-A-4
There is one such as described in Japanese Patent Publication No. 9647.
【０００５】すなわち、これらは金型の上方および下方
に連続シートの巻出しロールと、巻取りロールをそれぞ
れ設け、前記連続シートは両ロール間において雌型の開
口に対向するように走行され、金型の上方においてシー
トの所定位置を加熱盤の吸着面で吸着し、シートを加熱
しながら加熱盤を下降させて連続シートを走行させつ
つ、雌型の開口部分に送り込み、その後真空、圧空成形
などでフィルムを所定の形状に成形していた。That is, these are provided with an unwinding roll and a winding roll of a continuous sheet above and below the die, and the continuous sheet is run between both rolls so as to face the opening of the female die, Adhere a predetermined position of the sheet above the die with the adsorption surface of the heating platen, lower the heating platen while heating the sheet and run the continuous sheet while sending it to the opening part of the female die, then vacuum, pressure forming, etc. The film was formed into a predetermined shape with.
【０００６】[0006]
【発明が解決しようとする課題】上記の方法ではロール
状のフィルムをフィルム送り装置により加熱盤上に送り
込み、フィルムを加熱軟化させ、真空、圧空成形を行わ
なければならず、加熱装置などの装置の大型化、設備投
資の増加などが問題点としてあげられる。フィルムをラ
ミネートする場合と、絵柄を転写する場合の二通りの方
法があるが、原理は同じ様なものであるため、装置、構
造的には変わりがない。In the above method, a roll-shaped film has to be fed onto a heating plate by a film feeding device to heat and soften the film, and vacuum and pressure forming must be performed. The problem is the increase in size and the increase in capital investment. There are two methods of laminating a film and transferring a pattern, but since the principle is the same, there is no difference in the apparatus and structure.
【０００７】本発明は、従来の射出成形用金型のキャビ
ティ面に空気穴を有する形状で対応可能であり、言い換
えれば真空成形の真空と圧空を切り換えることにより、
比較的簡単な装置で三次元的形状のインモールド成形お
よび転写成形に対応できる方法を提供することを目的と
する。The present invention can be applied to a conventional injection molding die having a cavity surface having an air hole. In other words, by switching between vacuum forming vacuum and compressed air,
An object of the present invention is to provide a method capable of coping with in-mold molding and transfer molding of a three-dimensional shape with a relatively simple device.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、本発明における射出成形用金型は、伸展性を有する
フィルムを金型の固定側と可動側の間に挟持させ、射出
成形と同時にフィルムを成形品にラミネートするインモ
ールド成形、または該フィルムに転写用フィルムを用い
た転写成形において、金型に少なくとも一つ以上の挟持
されたフィルムに対する空気吹付用の穴を設け、または
独立した穴のかわりに一部に多孔質材を使用した金型を
用いて、その穴より熱風をフィルムに吹き付けることを
特徴としたものであり、該金型を用いて射出成形するこ
とにより、比較的簡単な装置で、ダイレクトインモール
ド成形、または射出同時絵付成形（転写成形）が可能と
なる。In order to achieve the above object, in the injection molding die of the present invention, an extensible film is sandwiched between a fixed side and a movable side of the die, and at the same time as the injection molding. In in-mold molding for laminating a film on a molded product, or transfer molding using a transfer film for the film, at least one or more holes for air-blowing are provided in the mold, or independent holes are provided. Instead of using a mold that uses a porous material, hot air is blown to the film from the hole, which is relatively easy by injection molding using the mold. With such a device, direct in-mold molding or injection simultaneous injection molding (transfer molding) becomes possible.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図面を参照して説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１０】図１は開いた状態の金型にラミネート用、
または転写用のフィルム３を挿入した状態を示し、フィ
ルム３は可動側金型１に近接している。フィルム３は巻
出しロール４と巻取りロール５により連続的に金型に供
給される。７はドライヤーのように加熱空気を送り込む
装置、８は真空装置である。切換弁６を加熱側７に切り
換えて通路９を介して、吹出口１０よりフィルム３に熱
風を吹き付ける。吹出口１０より熱風を吹き付けられた
フィルム３は、加熱され軟化した状態になり伸縮自在と
なる。FIG. 1 shows a mold in an open state for laminating,
Alternatively, the transfer film 3 is inserted, and the film 3 is close to the movable mold 1. The film 3 is continuously supplied to the mold by the unwinding roll 4 and the winding roll 5. Reference numeral 7 is a device for feeding heated air like a dryer, and 8 is a vacuum device. The switching valve 6 is switched to the heating side 7 and hot air is blown onto the film 3 from the air outlet 10 through the passage 9. The film 3 blown with hot air from the air outlet 10 is heated and softened, and can be expanded and contracted.
【００１１】その後、切換弁６を真空側８に切換ること
によりただちに真空成形を連続して行うことができる。Thereafter, by switching the switching valve 6 to the vacuum side 8, vacuum forming can be immediately performed continuously.
【００１２】真空成形は必ずしも必要ではなく、局所的
なフィルムの伸長度が小さければ熱風による加熱と溶融
樹脂の温度と圧力で所望の形状に賦形することも可能で
ある。Vacuum forming is not always necessary, and if the local elongation of the film is small, it is possible to form it into a desired shape by heating with hot air and the temperature and pressure of the molten resin.
【００１３】熱風により加熱、軟化されたフィルムは、
そのまま、または真空成形されて、図示しない型締装置
により可動側金型１と固定側金型２によって挟まれる。
その後、図示しない射出装置によってゲートから溶融樹
脂が充填される。The film heated and softened by hot air is
As it is or after vacuum molding, it is sandwiched between the movable side mold 1 and the fixed side mold 2 by a mold clamping device (not shown).
Thereafter, the molten resin is filled from the gate by an injection device (not shown).
【００１４】図２は溶融樹脂１１が充填された状態を示
す。FIG. 2 shows a state in which the molten resin 11 is filled.
【００１５】図１では熱風の吹出口１０を可動側金型１
に設けているが、熱風の吹出口１０を固定側金型２に設
けても同様の効果がある。この場合熱風加熱時にフィル
ム３を固定側金型２に近接して配置する必要がある。In FIG. 1, the hot air outlet 10 is connected to the movable mold 1.
However, the same effect can be obtained even if the hot air outlet 10 is provided in the stationary mold 2. In this case, it is necessary to arrange the film 3 close to the fixed mold 2 when heating with hot air.
【００１６】フィルム３を加熱する際の温度はフィルム
の種類によって異なるが、三菱レイヨン（株）のアクリ
ルフィルム（アクリプレンR ）の５０μｍ厚の場合にお
いては、引張破断伸度と温度との関係は図３のようにあ
る。つまり、加熱温度５０℃〜１２０℃で引張破断伸度
は向上するので、三次元的形状に対する効果は認められ
るが、望ましくは９０℃〜１１０℃が適切な温度領域で
ある。９０℃以下では十分な引張破断伸度の向上が得ら
れず、１１０℃以上ではフィルムの加熱溶解による破断
の恐れがある。The temperature at which the film 3 is heated varies depending on the type of the film, but in the case of the acrylic film (Acryprene R ) of Mitsubishi Rayon Co., Ltd. having a thickness of 50 μm, the relationship between the tensile elongation at break and the temperature is shown in There is like 3. That is, since the tensile elongation at break improves at a heating temperature of 50 ° C to 120 ° C, the effect on the three-dimensional shape is recognized, but 90 ° C to 110 ° C is preferably an appropriate temperature range. If the temperature is 90 ° C or lower, the tensile elongation at break cannot be sufficiently improved, and if the temperature is 110 ° C or higher, the film may be broken by heating and melting.
【００１７】本発明による第二の実施例として、多孔質
材料を用いた形態を図４を参照して説明する。As a second embodiment of the present invention, a form using a porous material will be described with reference to FIG.
【００１８】図４は開いた状態の金型に、ラミネート
用、または転写用のフィルム３を挿入した状態を示し、
フィルム３は固定側金型２と可動側金型１の間に位置
し、可動側金型１に近接している。FIG. 4 shows a state in which the laminating or transfer film 3 is inserted into the opened mold.
The film 3 is located between the fixed mold 2 and the movable mold 1, and is close to the movable mold 1.
【００１９】フィルム３は巻出ロール４と巻取ロール５
により連続的に金型に供給される。７は加熱空気を送り
込む装置、８は真空装置である。切換弁６を加熱側７に
切換えて通路９、多孔質材料１２を介してフィルム３に
熱風を吹き付ける。多孔質材料としては、新東工業
（株）ポーセラックスIIを使用した。The film 3 has an unwinding roll 4 and a winding roll 5
Is continuously supplied to the mold. Reference numeral 7 is a device for feeding heated air, and 8 is a vacuum device. The switching valve 6 is switched to the heating side 7 and hot air is blown to the film 3 through the passage 9 and the porous material 12. Shinto Kogyo Co., Ltd. Porcelax II was used as the porous material.
【００２０】[0020]
【発明の効果】本発明は、従来の射出成形用金型のキャ
ビティ面に空気穴を有する形状で対応可能であり、言い
換えれば真空成形の真空と圧空を切り換えることによ
り、比較的簡単な装置で三次元的形状のインモールド成
形および転写成形に対応できる方法を提供できる。INDUSTRIAL APPLICABILITY The present invention can be applied to a conventional injection molding die having a cavity surface having an air hole. In other words, by switching between vacuum forming vacuum and compressed air, a relatively simple apparatus can be used. It is possible to provide a method capable of coping with in-mold molding and transfer molding of a three-dimensional shape.
【図１】本発明による第一の実施例の金型を開いた溶融
樹脂の射出前の状態を表わす金型の断面図である。FIG. 1 is a cross-sectional view of a mold according to a first embodiment of the present invention showing a state before injection of molten resin in which a mold is opened.
【図２】本発明による第一の実施例の溶融樹脂の射出後
の状態を表わす金型の断面図である。FIG. 2 is a cross-sectional view of a mold showing a state after injection of molten resin according to the first embodiment of the present invention.
【図３】アクリルフィルムの引張破断伸度の温度依存性
を表わすグラフである。FIG. 3 is a graph showing temperature dependence of tensile breaking elongation of an acrylic film.
【図４】本発明による第二の実施例の金型断面図であ
る。FIG. 4 is a sectional view of a mold according to a second embodiment of the present invention.
１ 可動側金型 ２ 固定側金型 ３ フィルム ４ 巻出ロール ５ 巻取ロール ６ 切換弁 ７ 加熱装置 ８ 真空装置 ９ 通路 １０ 熱風吹出口 １１ 樹脂 １２ 多孔質材料 1 Movable Side Mold 2 Fixed Side Mold 3 Film 4 Unwinding Roll 5 Winding Roll 6 Switching Valve 7 Heating Device 8 Vacuum Device 9 Passage 10 Hot Air Outlet 11 Resin 12 Porous Material
Claims (2)
と可動側の間に挟持させ、射出成形と同時にフィルムを
成形品にラミネートするインモールド成形、または該フ
ィルムに転写用フィルムを用いた転写成形において、金
型に少なくとも一つ以上の挟持されたフィルムに対する
空気吹付用の穴を設け、または独立した穴のかわりに一
部に多孔質材を使用した金型を用いて、その穴より熱風
をフィルムに吹き付けることを特徴とするインモールド
成形方法、または転写成形方法。1. An in-mold molding in which a film having extensibility is sandwiched between a fixed side and a movable side of a mold and the film is laminated on a molded article simultaneously with injection molding, or a transfer film is used for the film. In transfer molding, at least one or more sandwiched films are provided with air-blowing holes in the mold, or a mold using a porous material in part instead of independent holes is used. An in-mold molding method or a transfer molding method, which comprises blowing hot air onto a film.
型、または転写成形用金型。2. The in-mold molding die or the transfer molding die according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12396194A JPH07329102A (en) | 1994-06-06 | 1994-06-06 | In-mold molding method, or transfer molding method, and molds to be used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12396194A JPH07329102A (en) | 1994-06-06 | 1994-06-06 | In-mold molding method, or transfer molding method, and molds to be used therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07329102A true JPH07329102A (en) | 1995-12-19 |
Family
ID=14873623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12396194A Pending JPH07329102A (en) | 1994-06-06 | 1994-06-06 | In-mold molding method, or transfer molding method, and molds to be used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07329102A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1609574A1 (en) * | 2004-06-23 | 2005-12-28 | Grupo Antolin Ingenieria, S.A. | System and method for manufacturing plastic parts with textile covering |
| KR100688926B1 (en) * | 2006-06-26 | 2007-03-02 | 이환길 | Apparatus and method for manufacturing motor's interior panel, and interior panel manufactured by the same |
-
1994
- 1994-06-06 JP JP12396194A patent/JPH07329102A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1609574A1 (en) * | 2004-06-23 | 2005-12-28 | Grupo Antolin Ingenieria, S.A. | System and method for manufacturing plastic parts with textile covering |
| KR100688926B1 (en) * | 2006-06-26 | 2007-03-02 | 이환길 | Apparatus and method for manufacturing motor's interior panel, and interior panel manufactured by the same |
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