JPH0798342B2 - Manufacturing method for painted products - Google Patents
Manufacturing method for painted productsInfo
- Publication number
- JPH0798342B2 JPH0798342B2 JP63000813A JP81388A JPH0798342B2 JP H0798342 B2 JPH0798342 B2 JP H0798342B2 JP 63000813 A JP63000813 A JP 63000813A JP 81388 A JP81388 A JP 81388A JP H0798342 B2 JPH0798342 B2 JP H0798342B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- transfer sheet
- molded product
- die
- injection molding
- 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
-
- 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
- B29C45/14827—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 using a transfer foil detachable from the insert
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- 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
本発明は、絵付け成形品の製造方法の改良に関する。 The present invention relates to an improvement in a method for producing a decorative molded product.
【従来の技術】 絵付け成形品を製造する技術として、基材フィルム、剥
離層、絵柄の印刷層および接着剤層からなる転写シート
を射出成形金型内に配置して、合成樹脂の射出成形を行
なうことにより一体化した成形品を得る方法が広く行な
われている。この技術において、成形品の形状が複雑で
あったり、深い絞りをもっているような場合、転写シー
トを予備成形しておく必要がある。予備成形は別に用意
した真空成形装置を使用して行なうのがふつうである
が、射出成形金型の雌型を真空成形金型として利用し予
備成形した後、雄型と雌型の型締めをして予備成形体に
対して合成樹脂の射出成形を行なう方法が試みられてい
る。この方法によれば、真空成形金型が不要であるし、
予備成形に続いて直ちに射出成形を行なえて能率がよ
い。 しかし、いずれの方法によるにしても、雌型には真空吸
引のための空気孔を１個ないし（通常は）数個設けなけ
ればならず、絵付け成形品の表面に空気孔の跡が残るこ
とが避けられない。この空気孔の跡がみえることは好ま
しくなく、絵柄のデザインによってはうまく処理できる
こともあるが、逆に目立って商品の外観を損ない、商品
価値を低くすることが多い。2. Description of the Related Art As a technique for producing a decorative molded product, a transfer sheet consisting of a base film, a release layer, a pattern printing layer and an adhesive layer is placed in an injection molding die, and a synthetic resin is injection molded. A method for obtaining an integrated molded product by performing the above is widely used. In this technique, when the shape of the molded product is complicated or has a deep drawing, it is necessary to preform the transfer sheet. Preforming is usually performed by using a separately prepared vacuum forming device, but after preforming by using the female die of the injection molding die as the vacuum forming die, the male and female die are clamped. Then, a method of performing injection molding of synthetic resin on the preformed body has been attempted. According to this method, a vacuum forming die is unnecessary,
Injection molding can be performed immediately after preforming, which is efficient. However, whichever method is used, the female die must be provided with one or (usually) several air holes for vacuum suction, and a trace of air holes remains on the surface of the decorative molded product. Is inevitable. It is not desirable to see the traces of the air holes, and although it may be successfully treated depending on the design of the design, it is conspicuously spoiling the appearance of the product and lowering the product value in many cases.
本発明の目的は、上記した問題を解決し、絵付け成形品
の表面に空気孔の跡が残ることのない絵付け成形品の製
造方法を提供することにある。An object of the present invention is to solve the above problems and to provide a method for producing a decorative molded product in which no trace of air holes remains on the surface of the decorative molded product.
本発明の絵付け成形品の製造方法は、第１図に示すよう
に、雄型2Aと雌型2Bからなる射出成形金型２の雌型2Bの
キャビティ壁の少なくとも一部を多孔質の材料22で構成
するとともに、この多孔質材料からなるキャビティ壁の
背後を、排気孔21を通して真空源（図示してない）に接
続した成形装置を使用し、基材フィルム、剥離層、絵柄
の印刷層および接着剤層からなる転写シート1Aを、上記
の雌型2Bを利用して真空成形することにより予備成形し
て、第２図に示すような転写シートの予備成形体1Bを得
た後、雄型2Aと雌型2Bの型締めをして上記の予備成形体
1Bに対し合成樹脂の射出成形を行なって、必要により基
材フィルムを剥離し第３図に示すような成形品３を得る
ことからなる。 ここで、「真空成形」の語は、単なる真空吸引による成
形のほか、圧空を併用する真空圧空成形をも包含する意
味をもつ。 雌型に用いる多孔質の材料としては、なるべく繊細な、
たとえばミクロン単位の孔が多数であり、真空成形に妨
げにならない十分な通気性を有するとともに、表面が必
要な平滑度と強度を有するものを使用すべきである。そ
のような材料は、多孔質セラミックス、焼結金属などの
中から適切なものを見出せるであろう。その中でも、セ
ラミックスの粉末に金属の粉末および繊維の一方または
両方を混合して焼結したもの、たとえば市販されている
「ポーセラミックス」（新東工業（株））のような材料
が好適である。通気度についてみれば、３〜25m3/cm2・
secの範囲にある多孔質材料が、上記の観点から適切で
ある。転写シートを予備成形する真空成形に当って、真
空ポンプの負荷が重過ぎないためには、少なくともm3/c
m2・secの通気度を必要とする。一方、通気度の大きい
材料は強度が低くなりがちであるし、表面の平滑さが低
くなるし孔も大きくなり、成形一体化された化粧シート
表面の孔の痕跡も目立ってくるから、自ら限界がある。
25m3/cm2・sec以下のものであれば、材質にかかわらず
問題なく使用できる。 雌型全体を多孔質の材料で製作してもよいが、真空成形
に伴う空気の流通に関与しない部分は多孔質である意味
がないから、排気孔のある部分だけ多孔質にすればよ
い。また、キャビティを形成する側だけを多孔質とし、
裏から金属で支える構造にした方が、強度を確保できて
好ましい。 転写シートの構成は、基材フィルム、剥離層および接着
剤層の材料、ならびに絵柄の印刷を含め、既知の技術に
従えばよい。As shown in FIG. 1, the method for producing a decorative molded product of the present invention is such that at least a part of the cavity wall of the female mold 2B of the injection mold 2 including the male mold 2A and the female mold 2B is made of a porous material. 22 is used, and the back side of the cavity wall made of this porous material is connected to a vacuum source (not shown) through the exhaust hole 21, and a base film, a release layer, and a pattern printing layer are used. The transfer sheet 1A composed of the adhesive layer and the adhesive layer is preformed by vacuum forming using the above female mold 2B to obtain a transfer sheet preform 1B as shown in FIG. Clamp the mold 2A and female mold 2B, and then press
1B is injection-molded with a synthetic resin, and if necessary, the substrate film is peeled off to obtain a molded product 3 as shown in FIG. Here, the term "vacuum forming" is meant to include not only simple vacuum suction forming but also vacuum pressure forming that uses pressure together. The porous material used for the female mold is as delicate as possible,
For example, it should have a large number of holes in the micron range, have sufficient air permeability so as not to interfere with vacuum forming, and have a surface having the required smoothness and strength. Such materials will find suitable among porous ceramics, sintered metals and the like. Among these, a material obtained by mixing ceramic powder with one or both of metal powder and fiber and sintering, for example, a commercially available material such as "Pow Ceramics" (Shinto Kogyo Co., Ltd.) is preferable. . Looking at the air permeability, 3-25m 3 / cm 2 ·
A porous material in the range of sec is suitable from the above viewpoint. At the time of vacuum forming to preform the transfer sheet, in order not to overload the vacuum pump, at least m 3 / c
It requires air permeability of m 2 · sec. On the other hand, materials with high air permeability tend to have lower strength, lower surface smoothness, larger pores, and visible traces of pores on the surface of the integrally formed decorative sheet. There is.
As long as it is 25 m 3 / cm 2 · sec or less, it can be used without problems regardless of the material. Although the entire female die may be made of a porous material, it is meaningless that the portion that is not involved in the air flow associated with the vacuum forming is porous, so that only the portion having the exhaust hole may be made porous. Also, only the side that forms the cavity is porous,
It is preferable to use a structure in which the metal is supported from the back because the strength is secured. The construction of the transfer sheet may be according to known techniques, including the material of the base film, the release layer and the adhesive layer, and the printing of the pattern.
本発明の絵付け成形品の製造方法においては、転写シー
トを射出成形金型の雌型内に配置して、真空成形により
予備成形する際に、吸引された空気は雌型の多孔質のキ
ャビティ壁を通って排出される。 転写シートの予備成形体の表面には空気孔の跡がなく、
従って、得られる絵付け成形品の表面にも空気跡が残る
ことがない。In the method for producing a decorative molded product of the present invention, when the transfer sheet is placed in the female mold of the injection molding die and preformed by vacuum molding, the sucked air is a porous cavity of the female mold. Drain through the wall. There are no air holes on the surface of the transfer sheet preform,
Therefore, no air traces are left on the surface of the obtained decorative molded product.
多孔質のセラミックス−金属の混合焼結体「ポーセラミ
ックス」（新東工業（株））を用いて所定のキャビティ
形状の真空成形用金型を用意し、別に用意した鋼製の金
型に組み込んで、真空成形用金型兼射出成形用金型を製
作した。 厚さ50μのポリ塩化ビニルのフィルムを基材とし、その
上に、グラビアコート法によりポリビニルブチラール樹
脂を塗布して、剥離層を形成した。 この剥離層の上に、塩ビ−酢ビ共重合体のインキを用い
たシルクスクリーン印刷により絵柄の印刷を施し、その
上にアクリル樹脂のインキを用いたシルクスクリーン印
刷で接着剤層を設けて、転写シートをつくった。 上記の転写シートを温度110℃の熱盤に当てて予備加熱
し、真空成形用金型兼射出成形用金型内に配置して、真
空成形による予備成形を行なった。続いて、この金型内
に、ノズル温度210℃でABC樹脂を射出成形した。成形品
を金型からとり出し、ポリ塩化ビニルのフィルムを剥離
して、表面に真空孔の跡がない絵付け製品を得た。Using a porous ceramic-metal mixed sintered body "Poceramics" (Shinto Kogyo Co., Ltd.), prepare a mold for vacuum forming with a predetermined cavity shape and incorporate it into a steel mold prepared separately. Then, a die for vacuum molding and a die for injection molding were manufactured. A polyvinyl chloride film having a thickness of 50 μ was used as a base material, and a polyvinyl butyral resin was applied thereto by a gravure coating method to form a release layer. On this release layer, a pattern is printed by silk screen printing using a vinyl chloride-vinyl acetate copolymer ink, and an adhesive layer is provided on the adhesive layer by silk screen printing using an acrylic resin ink, I made a transfer sheet. The above-mentioned transfer sheet was applied to a heating plate having a temperature of 110 ° C. to be preheated, and the transfer sheet was placed in a vacuum molding die and an injection molding die to carry out preforming by vacuum molding. Subsequently, ABC resin was injection-molded in the mold at a nozzle temperature of 210 ° C. The molded product was taken out of the mold and the polyvinyl chloride film was peeled off to obtain a painted product having no trace of vacuum holes on the surface.
本発明の絵付け成形品の製造方法によれば、得られる絵
付け成形品の表面に空気孔の跡が残ることがない。 従って、絵柄デザインが制約を受けることなく、美麗な
製品を成形できる。According to the method for producing a decorative molded product of the present invention, no air holes are left on the surface of the resulting decorative molded product. Therefore, a beautiful product can be molded without any restrictions on the design of the design.
第１図は、本発明の絵付け成形品の製造方法に従って転
写シートを射出成形金型の雌型内に配置して真空成形を
行なっているところを示す、金型を中心とする断面図で
ある。 第２図は、転写シートの予備成形体を射出成形金型内に
配置して射出成形を行なう直前の状態を示す、第１図と
同様な断面図である。 第３図は、本発明の製造方法により得られた絵付け成形
品を示す断面図である。 1A……転写シート 1B……転写シートの予備成形体 ２……射出成形金型 2A……雄型、2B……雌型 21……排気孔、22……多孔質の材料 ３……絵付け成形品FIG. 1 is a cross-sectional view centered on a mold showing a transfer sheet placed in a female mold of an injection molding mold according to the method for producing a decorative molded product of the present invention and performing vacuum molding. is there. FIG. 2 is a sectional view similar to FIG. 1, showing a state immediately before performing injection molding by disposing a preformed body of a transfer sheet in an injection molding die. FIG. 3 is a sectional view showing a decorative molded product obtained by the manufacturing method of the present invention. 1A …… Transfer sheet 1B …… Transfer sheet preform 2 …… Injection mold 2A …… Male mold, 2B …… Female mold 21 …… Exhaust hole, 22 …… Porous material 3 …… Painting Molding
Claims (2)
キャビティ壁の少なくとも一部を、通気度が３〜25m3/c
m2・secの多孔質の材料で構成するとともに、この多孔
質材料からなるキャビティ壁の背後を真空源に接続した
成形装置を使用し、基材フィルム、剥離層、絵柄の印刷
層および接着剤層からなる転写シートを、上記の雌型を
利用して真空成形することにより予備成形して、転写シ
ートの予備成形体を得た後、雄型と雌型の型締めをして
上記の予備成形体に対し合成樹脂の射出成形を行なって
一体の成形品を得、成形品を金型から取り出し、成形品
から転写シートの基材フィルムを剥離することからなる
絵付け成形品の製造方法。1. An air permeability of at least a part of a cavity wall of a female die of an injection molding die comprising a male die and a female die is 3 to 25 m 3 / c.
Using a molding machine that is composed of a porous material of m 2 · sec and the back of the cavity wall made of this porous material is connected to a vacuum source, a base film, release layer, pattern printing layer and adhesive The transfer sheet consisting of layers is preformed by vacuum forming using the above-mentioned female mold to obtain a preformed body of the transfer sheet, and then the male mold and the female mold are clamped together to carry out the above-mentioned preliminary molding. A method for producing a decorative molded article, which comprises subjecting a molded article to injection molding of synthetic resin to obtain an integrated molded article, taking out the molded article from a mold, and peeling the base film of the transfer sheet from the molded article.
キャビティ壁の少なくとも一部をセラミックスの粉末に
金属の粉末および（または）繊維を混合して焼結してな
る多孔質の材料で構成するとともに、この多孔質材料か
らなるキャビティ壁の背後を真空源に接続した成形装置
を使用し、基材フィルム、剥離層、絵柄の印刷層および
接着剤層からなる転写シートを、上記の雌型を利用して
真空成形することにより予備成形して、転写シートの予
備成形体を得た後、雄型と雌型の型締めをして上記の予
備成形体に対し合成樹脂の射出成形を行なって一体の成
形品を得、成形品を金型から取り出し、成形品から転写
シートの基材フィルムを剥離することからなる絵付け成
形品の製造方法。2. A porous body obtained by mixing ceramic powder with metal powder and / or fibers and sintering at least a part of a cavity wall of the female mold of an injection molding die including a male mold and a female mold. While using a molding device in which the back of the cavity wall made of this porous material is connected to a vacuum source, a transfer sheet consisting of a base film, a release layer, a pattern printing layer and an adhesive layer, After preforming by vacuum forming using the above-mentioned female mold to obtain a preformed body of the transfer sheet, the male mold and the female mold are clamped, and a synthetic resin is applied to the above preformed body. A method for producing a decorative molded product, which comprises performing injection molding to obtain an integrated molded product, taking out the molded product from a mold, and peeling the base film of the transfer sheet from the molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63000813A JPH0798342B2 (en) | 1988-01-06 | 1988-01-06 | Manufacturing method for painted products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63000813A JPH0798342B2 (en) | 1988-01-06 | 1988-01-06 | Manufacturing method for painted products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01176530A JPH01176530A (en) | 1989-07-12 |
| JPH0798342B2 true JPH0798342B2 (en) | 1995-10-25 |
Family
ID=11484118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63000813A Expired - Fee Related JPH0798342B2 (en) | 1988-01-06 | 1988-01-06 | Manufacturing method for painted products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0798342B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890220A (en) * | 2015-06-05 | 2015-09-09 | 武汉华星光电技术有限公司 | Forming method and forming system for plastic tray |
| CN110509464A (en) * | 2019-08-20 | 2019-11-29 | 江苏优盛美装饰材料有限公司 | A kind of desktop die molding method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030262A (en) * | 2011-09-30 | 2013-04-10 | 富泰华工业（深圳）有限公司 | Shaping method of curved-surface glass plate and shaping equipment adopted in shaping method |
| JP6723787B2 (en) * | 2016-03-30 | 2020-07-15 | 三光合成株式会社 | Gas discharge structure and method for manufacturing gas discharge structure |
| ES2651694B1 (en) | 2016-07-27 | 2018-11-16 | Comercial De Utiles Y Moldes, S.A. | Device and procedure for the suction of air in injection molds and the subsequent expulsion of molded parts |
| CN110802868A (en) * | 2019-11-27 | 2020-02-18 | 江苏新迈机械有限公司 | Method for smoothing and opening mold |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046213A (en) * | 1983-04-22 | 1985-03-13 | Takeo Nakagawa | Mold for vacuum molding and manufacture thereof |
| JPS6114922A (en) * | 1984-06-30 | 1986-01-23 | Toyoda Gosei Co Ltd | Manufacture of mollded parts with skin and molding die thereof |
| JPS6163424A (en) * | 1984-09-05 | 1986-04-01 | Dainippon Printing Co Ltd | Simultaneous decoration method of thermosetting resin injection molding |
| JPS61100418A (en) * | 1984-10-24 | 1986-05-19 | Nissan Shatai Co Ltd | Hold |
| JPS6228246A (en) * | 1985-07-31 | 1987-02-06 | 盟和産業株式会社 | Manufacture of composite molded shape |
| JPH0777745B2 (en) * | 1985-09-30 | 1995-08-23 | ソニー株式会社 | Injection molding equipment |
| JPH0356344Y2 (en) * | 1987-05-02 | 1991-12-18 |
-
1988
- 1988-01-06 JP JP63000813A patent/JPH0798342B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890220A (en) * | 2015-06-05 | 2015-09-09 | 武汉华星光电技术有限公司 | Forming method and forming system for plastic tray |
| CN110509464A (en) * | 2019-08-20 | 2019-11-29 | 江苏优盛美装饰材料有限公司 | A kind of desktop die molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01176530A (en) | 1989-07-12 |
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