JPS6335323A - Manufacture of laminated resin molded product - Google Patents
Manufacture of laminated resin molded productInfo
- Publication number
- JPS6335323A JPS6335323A JP18067186A JP18067186A JPS6335323A JP S6335323 A JPS6335323 A JP S6335323A JP 18067186 A JP18067186 A JP 18067186A JP 18067186 A JP18067186 A JP 18067186A JP S6335323 A JPS6335323 A JP S6335323A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- mold
- molded
- laminated
- cavity
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 54
- 229920005989 resin Polymers 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 12
- 239000000057 synthetic resin Substances 0.000 claims abstract description 12
- 238000001746 injection moulding Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 abstract description 18
- 238000000465 moulding Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 2
- 229920005668 polycarbonate resin Polymers 0.000 abstract description 2
- 239000004431 polycarbonate resin Substances 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
- B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
-
- 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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- 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
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
- B29C45/045—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0025—Opaque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、数種の溶融樹脂を積層させて順次にインジェ
クション成形することにより積層樹脂成形品を製造する
ところの方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a laminated resin molded article by laminating several types of molten resins and successively injection molding them.
従来の技術
一般に、数種の溶融樹脂を積層してインジェクション成
形する樹脂成形品として、例えば車輌用の装飾品を例示
すると第３図で示す如きフィニッシャ−Ｆがある。2. Description of the Related Art In general, a finisher F as shown in FIG. 3 is an example of a resin molded product in which several types of molten resins are laminated and injection-molded, for example, as an ornament for a vehicle.
そのフィニッシャ−Ｆは第４図にも示すように被取付体
Ｐに対する止着部材としてナツトＮで締付けるスタット
ボルト■を植立固定するボス部Ｂ等を内面側に一体成形
するものであり、この外表面側からボス部Ｂを透視不能
にするべくボス部Ｂを一体成形する母型体１０を不透明
な合成樹脂で形成し、更に外表面に透明乃至半透明な合
成樹脂で表装体２０を積層成形するようになっている。As shown in Fig. 4, the finisher F has a boss part B etc. integrally molded on the inner side for planting and fixing a stud bolt ■ which is tightened with a nut N as a fastening member to the object P to be attached. In order to make the boss part B impossible to see through from the outer surface side, the matrix body 10 on which the boss part B is integrally molded is formed of an opaque synthetic resin, and a facing body 20 is further laminated on the outer surface of a transparent or translucent synthetic resin. It is designed to be molded.
その成形機としては第５図で示す如き回転式二色成形の
インジェクション金型が適用されており、この成形機は
中央の回転するコア型１１と周囲に配置するキャビティ
空間の異なる二種のキャビティ型１２．２１を備えてコ
ア型１１とキャビティ型１２とで母型体１０を射出成形
した後に１８００回転するコア型１１と第二のキャビテ
ィ型２１との間で表装体２０を積層成形するものである
。As the molding machine, a rotary two-color injection mold as shown in Fig. 5 is used, and this molding machine has a rotating core mold 11 in the center and two types of cavities with different cavity spaces arranged around it. A mold 12.21 is provided, and after injection molding a matrix body 10 with a core mold 11 and a cavity mold 12, a facing body 20 is laminated and molded between a core mold 11 that rotates 1800 times and a second cavity mold 21. It is.
発明が解決しようとする問題点
この積層樹脂成形品を製造する場合に、母型体１０を成
形する合成樹脂と表装体２０を成形する合成樹脂に溶融
温度が同一または極めて近似したものを用いると、表装
体２０を形成する樹脂を射出する際に母型体１０を成形
した樹脂を溶かして互いが混合することにより美感を損
ねてしまう問題点がある。Problems to be Solved by the Invention When manufacturing this laminated resin molded product, if the synthetic resin used to mold the matrix body 10 and the synthetic resin used to mold the facing body 20 have the same or very similar melting temperature, However, there is a problem in that when the resin forming the mounting body 20 is injected, the resin used to form the matrix body 10 is melted and mixed with each other, impairing the aesthetic appearance.
問題点を解決するための手段
本発明に係る積層樹脂成形品の製造方法においては、予
め成形する樹脂成形品の溶融樹脂に対して相対的に溶融
温度の低い溶融樹脂を順次に射出することにより樹脂成
形品を積層成形するようにされている。Means for Solving the Problems In the method for manufacturing a laminated resin molded product according to the present invention, by sequentially injecting molten resin having a lower melting temperature relative to the molten resin of the resin molded product to be molded in advance. The resin molded product is laminated and molded.
作用
この製造方法では、先の樹脂成形部材よりも溶融温度の
低い溶融樹脂で次の樹脂成形部材を形成するから、順次
に溶融樹脂を積層させて射出成形しても前に射出した成
形部材の樹脂と次に射出する溶融樹脂とが混じり合う事
態を少なくとも生ずることがない。Function: In this manufacturing method, the next resin molded part is formed with a molten resin that has a lower melting temperature than the previous resin molded part, so even if the molten resin is laminated one after another and injection molded, the molded part that was injected previously will not be the same. At least there is no possibility that the resin will mix with the next injected molten resin.
実施例
以下、第１及び２図を参照して説明すれば、次の通りで
ある。An embodiment will be described below with reference to FIGS. 1 and 2.
この実施例は第３並びに４図で示す樹脂成形品を第５図
に示したインジェクション金型で形成するものであり、
それらと同じ樹脂成形部材、金型の構成部は同一の符合
で示されている。In this example, the resin molded products shown in Figs. 3 and 4 are formed using the injection mold shown in Fig. 5.
Constituent parts of the same resin molded members and molds are indicated by the same reference numerals.
第１図は積層樹脂成形品としてフィニッシャ−の母型体
１０を成形する工程を示し、この工程ではコア型１１の
凸部１１ａと第１のキャビティ型１２のキャビティ空間
１２ａとで横断面路コ字形を呈する母型体１０を樹脂成
形する。その際にはＰＣ−ＡＢＳ （ポリカーボネイト
樹脂とＡＢＳ樹脂との混合物）等の不透明な合成樹脂１
０′を用いると共に、溶融温度が２６０〜２７ｏ°程度
の相対的に高温度なものを用いるとよい。また、この合
成樹脂１０′としては不透明であれば所望の色調に着色
したものを用いることもできる。その母型体１０の成形
時には被取付体に対する止着部１０ａ９例えばスタット
ボルトを植立するボス部をコア型１１の環状凹部ｔｔｂ
で形成し、また外表面側にはまず目模様や装飾マーク等
の適宜な模様１０ｂをキャビティ型１２の何形面１２ｂ
で形成するようにもできる。FIG. 1 shows a process of molding a mother mold body 10 of a finisher as a laminated resin molded product. A matrix body 10 having a character shape is molded with resin. In that case, use an opaque synthetic resin such as PC-ABS (a mixture of polycarbonate resin and ABS resin).
It is preferable to use a material having a relatively high melting temperature of about 260 to 27 degrees. Further, as the synthetic resin 10', a resin colored in a desired color can also be used as long as it is opaque. When molding the mother mold body 10, the fixing part 10a9 for the object to be attached, for example, the boss part for planting a stud bolt, is connected to the annular recess ttb of the core mold 11.
First, a suitable pattern 10b such as an eye pattern or a decorative mark is formed on the outer surface of the cavity mold 12.
It can also be formed by
この母型体１０を射出成形して第１のキャビティ型２０
を型開きした後にコア型１１を１８０゜回転し、第２図
に示す工程の如くコア型１１と第２のキャビティ型２１
とを型締めする。その第２のキャビティ型２１は第１の
キャビティ型１２と比較して相対的に大きなキャビティ
空間２１ａを持つものであり、このキャビティ空間２１
ａ内で母型体１０の外表面側に表装体２０を母型体１０
の溶融温度より低い温度に加熱溶融させてキャビティ空
間２１ａ内に射出し一体に積層成形する。This matrix body 10 is injection molded to form a first cavity mold 20.
After opening the mold, the core mold 11 is rotated 180 degrees, and the core mold 11 and the second cavity mold 21 are separated as shown in FIG.
Clamp the mold. The second cavity mold 21 has a relatively large cavity space 21a compared to the first cavity mold 12, and this cavity space 21
A mounting body 20 is placed on the outer surface side of the matrix body 10 within the matrix body 10.
It is heated and melted to a temperature lower than the melting temperature of , and then injected into the cavity space 21a and integrally laminated and molded.
その成形樹脂２０’ としてはＰＭＭＡ樹脂（メチルメ
タクリレート樹脂）等の無色または着色透明乃至半透明
な合成樹脂を用い、しかも溶融温度が母型体１０の溶融
相＠１０’ よりも相対的に低い２３０〜２４０°程度
のものを用いるとよい。As the molding resin 20', a colorless or colored transparent or translucent synthetic resin such as PMMA resin (methyl methacrylate resin) is used, and the melting temperature is relatively lower than that of the molten phase @10' of the matrix body 10. It is preferable to use one with an angle of about 240 degrees.
このようにして積層樹脂成形品を製造するときには先に
成形する母型体１０の溶融樹脂１０′よりも相対的に低
い溶融温度の溶融樹脂２０′を母型体１０に積層するよ
う射出するから、母型体１０の外表面側を溶かさずに表
装体側を成形することができるようになる。また。その
表装体側は耐熱温度が低いものであっても母型体１０側
が耐熱性の高い成形体として形成されているため、積層
樹脂成形品全体としては高い耐熱性のものが得られる。When manufacturing a laminated resin molded product in this way, molten resin 20' having a relatively lower melting temperature than the molten resin 10' of the matrix body 10 to be molded first is injected so as to be laminated on the matrix body 10. , it becomes possible to mold the facing body side without melting the outer surface side of the matrix body 10. Also. Even if the surface body side has a low heat resistance temperature, the matrix body 10 side is formed as a molded body with high heat resistance, so that the entire laminated resin molded product has high heat resistance.
これに加えて、積層樹脂成形品の内面側には被取付体に
対する止着部１０ａを設けても母型体ｌＯが不透明な合
成樹脂で形成されているから、外表面側からは見えない
ように形成することができる。In addition, even if the fixing part 10a for the object to be attached is provided on the inner surface of the laminated resin molded product, since the matrix body 10 is made of opaque synthetic resin, it cannot be seen from the outer surface. can be formed into
なお、上述した如く互いに積層成形する溶融樹脂として
は溶融温度の異なるものを用いるが、溶解度パラメータ
（ＳＰ値）としては同一または近似したものを選択する
とよい、また、上述した実施例では同一のコア型１１を
回転させて用いたが、夫々別のコア型を用いてインジェ
クション成形してもよい、更に、被取付体の上着部１０
ａとしてはボス部に限らず、逆り字状、１字状９箱型等
のリブとして形成し、このリブに別途のクリップ等を嵌
着することができる。As mentioned above, molten resins with different melting temperatures are used for lamination molding, but it is preferable to select ones with the same or similar solubility parameters (SP values). Although the mold 11 is rotated and used, injection molding may also be performed using different core molds.
A is not limited to a boss portion, but may be formed as a rib in an inverted letter shape, a single letter shape, nine box shape, etc., and a separate clip or the like may be fitted to this rib.
発明の効果
以上の如く、本発明に係る積層樹脂成形品の製造方法に
依れば、数種の溶融樹脂を積層させてインジェクション
成形するときでも互いを溶融混合する事態を生じないか
ら装飾性に優れた樹脂成形品を製造することを可能にす
る。Effects of the Invention As described above, according to the method for producing a laminated resin molded product according to the present invention, even when several types of molten resins are laminated and injection molded, there is no melt-mixing of each other, so it is highly decorative. It makes it possible to manufacture excellent resin molded products.
第１及び２図は本発明に係る積層樹脂成形品の製造工程
を示す説明図、第３図ａ、ｂは積層樹脂成形品の一例を
示す説明図、第４図は同成形品の取付状態で示す説明図
、′ｓ５図は同成形品の製造に通用可能な回転式のイン
ジェクション成形機を示す説明図である。
１０′ ：相対的に溶融温度の高い溶融樹脂、２０′
：相対的に溶融温度の低い溶融樹脂、１１：コア型、１
２，２１：キャビティ型。
第１図 第２図
第３図
第４図
汁
第５図Figures 1 and 2 are explanatory diagrams showing the manufacturing process of a laminated resin molded product according to the present invention, Figures 3a and b are explanatory diagrams showing an example of a laminated resin molded product, and Figure 4 is an attached state of the molded product. Figure 's5 is an explanatory diagram showing a rotary injection molding machine that can be used to manufacture the same molded product. 10': Molten resin with relatively high melting temperature, 20'
: Molten resin with relatively low melting temperature, 11: Core type, 1
2, 21: Cavity type. Figure 1 Figure 2 Figure 3 Figure 4 Juice Figure 5
Claims (3)
ャビティ型とコア型とで順次に数種の溶融樹脂を射出し
て積層樹脂成形品を製造するにあたり、その溶融樹脂と
して相対的に溶融温度の低いものを順次に射出するよう
にしたことを特徴とする積層樹脂成形品の製造方法。(1) When manufacturing a laminated resin molded product by sequentially injecting several types of molten resin into a plurality of cavity molds and core molds having cavity spaces of different sizes, the relative melting temperature of the molten resin is A method for manufacturing a laminated resin molded product, characterized by sequentially injecting the lowest parts.
相対的に高い不透明な合成樹脂を射出成形した後、その
成形部材の外表面に積層させて当該コア型と第２のキャ
ビティ型とで相対的に溶融温度の低い透明乃至半透明な
合成樹脂を射出成形するようにしたこところの特許請求
の範囲第１項記載の積層樹脂成形品の製造方法。(2) After injection molding an opaque synthetic resin with a relatively high melting temperature in the core mold and the first cavity mold, it is laminated on the outer surface of the molded member to form the core mold and the second cavity mold. A method for manufacturing a laminated resin molded article according to claim 1, wherein a transparent or translucent synthetic resin having a relatively low melting temperature is injection molded.
対する止着部を内面側に有する成形部材を形成するよう
にしたこところの特許請求の範囲第１または２項記載の
積層樹脂成形品の製造方法。(3) The laminated resin according to claim 1 or 2, wherein the core mold and the first cavity mold form a molded member having a fixing portion for an attached object on the inner surface side. Method of manufacturing molded products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18067186A JPS6335323A (en) | 1986-07-31 | 1986-07-31 | Manufacture of laminated resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18067186A JPS6335323A (en) | 1986-07-31 | 1986-07-31 | Manufacture of laminated resin molded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6335323A true JPS6335323A (en) | 1988-02-16 |
Family
ID=16087273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18067186A Pending JPS6335323A (en) | 1986-07-31 | 1986-07-31 | Manufacture of laminated resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6335323A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008302217A (en) * | 2007-06-08 | 2008-12-18 | Bridgestone Sports Co Ltd | Method of manufacturing golf ball |
| JP2013141463A (en) * | 2012-01-06 | 2013-07-22 | Adachi Light Co Ltd | Resin game board, mold, and method of manufacturing resin game board |
| WO2017051375A1 (en) * | 2015-09-25 | 2017-03-30 | Sabic Global Technologies B.V. | Method of injection molding using ribs and apparatus therefor |
| DE102020211291A1 (en) | 2020-09-09 | 2022-03-10 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for manufacturing a surface component for a mirror component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5914931A (en) * | 1982-07-05 | 1984-01-25 | シビエ・プロジェクトール | Shape through injection molding and its manufacture |
-
1986
- 1986-07-31 JP JP18067186A patent/JPS6335323A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5914931A (en) * | 1982-07-05 | 1984-01-25 | シビエ・プロジェクトール | Shape through injection molding and its manufacture |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008302217A (en) * | 2007-06-08 | 2008-12-18 | Bridgestone Sports Co Ltd | Method of manufacturing golf ball |
| JP2013141463A (en) * | 2012-01-06 | 2013-07-22 | Adachi Light Co Ltd | Resin game board, mold, and method of manufacturing resin game board |
| WO2017051375A1 (en) * | 2015-09-25 | 2017-03-30 | Sabic Global Technologies B.V. | Method of injection molding using ribs and apparatus therefor |
| CN108136636A (en) * | 2015-09-25 | 2018-06-08 | 沙特基础工业全球技术有限公司 | Injection molding forming method using rib and the device for it |
| US20180272583A1 (en) * | 2015-09-25 | 2018-09-27 | Sabic Global Technologies B.V. | Method of injection molding using ribs and apparatus therefor |
| US11110635B2 (en) | 2015-09-25 | 2021-09-07 | Sabic Global Technologies B.V. | Method of injection molding using ribs and apparatus therefor |
| DE102020211291A1 (en) | 2020-09-09 | 2022-03-10 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for manufacturing a surface component for a mirror component |
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