JPH09174599A - Two-color molding of panel - Google Patents
Two-color molding of panelInfo
- Publication number
- JPH09174599A JPH09174599A JP7334658A JP33465895A JPH09174599A JP H09174599 A JPH09174599 A JP H09174599A JP 7334658 A JP7334658 A JP 7334658A JP 33465895 A JP33465895 A JP 33465895A JP H09174599 A JPH09174599 A JP H09174599A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- primary
- molded
- color
- 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.)
- Pending
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 117
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000001746 injection moulding Methods 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000000243 solution Substances 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001771 impaired effect Effects 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
-
- 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)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、例えば、AV、O
A機器等の表示部に使用されるパネルを、2色成形機に
より、1次成形でパネルの周辺部を構成する1次成形部
分を不透明色樹脂で射出成形し、その1次成形部分を2
次成形型に運び、2次成形でその1次成形部分を覆う上
層部および中央の表示部を構成する2次成形部分を透明
色樹脂を射出して1次成形部分と一体に成形するパネル
の2色成形方法に関する。TECHNICAL FIELD The present invention relates to, for example, AV, O
A panel used for the display part of equipment A, etc. is injection-molded by a two-color molding machine with an opaque resin to form a primary molding part that constitutes the peripheral part of the panel by primary molding.
Of the panel which is carried to the secondary molding die and which is molded integrally with the primary molding portion by injecting the transparent color resin into the secondary molding portion constituting the upper layer portion covering the primary molding portion and the central display portion by the secondary molding. It relates to a two-color molding method.
【0002】[0002]
【従来の技術】例えば、AV、OA機器等の表示部に使
用されるパネル10は、図6および図7に示すように上
下2層を一体に成形した成形品で、上方から見ると図6
のように中央の表示部Dは透明色樹脂で成形されて下方
にある表示体15の表示を透過表示することができ、ま
た、その周辺部Eは不透明色樹脂が裏打ち成形されてい
る。すなわち、図7にその断面を示すように、不透明色
(黒色が多い)の下層Lは中央の表示部Dを除いた形で
成形され、その上に透明色の上層Uが成形されて中央の
表示部Dは上層Uの1層のみで裏打ちなしになってい
る。2. Description of the Related Art For example, a panel 10 used for a display portion of AV and OA equipment is a molded product in which upper and lower two layers are integrally molded as shown in FIGS.
As described above, the central display portion D is formed of a transparent color resin so that the display of the display body 15 below can be transparently displayed, and the peripheral portion E is lined with an opaque color resin. That is, as shown in the cross section in FIG. 7, the lower layer L of opaque color (mostly black) is formed in a shape excluding the central display portion D, and the upper layer U of transparent color is formed on the lower layer L to form a central portion. The display portion D is not lined with only one layer of the upper layer U.
【0003】次に、従来、実施されているこのパネル1
0の2色成形方式による成形方法を説明する。1次成形
においては、図8に示すように、コア型13と1次成形
キャビ型14とによって1次成形部分1である下層にな
る周辺部Eが不透明色樹脂で成形される。この1次成形
キャビ型14の表示部Dになる部分には、コア型13に
当接する高さの突起部分14aが設けられており、これ
により1次成形ではパネル10の表示部Dを除いた形で
成形される。Next, this panel 1 which has been conventionally implemented
A molding method according to the two-color molding method of 0 will be described. In the primary molding, as shown in FIG. 8, the core mold 13 and the primary molding cavity mold 14 mold the lower peripheral part E which is the primary molding part 1 with the opaque color resin. A projection portion 14a having a height abutting on the core mold 13 is provided in a portion which becomes the display portion D of the primary molding cabinet mold 14, whereby the display portion D of the panel 10 is excluded in the primary molding. Molded in shape.
【0004】そして、この1次成形部分1は、2次成形
キャビ型15に送られ、図9に示すように2次成形部分
12である1次成形部分1を覆う上層部分と中央の表示
部Dとが透明色樹脂で射出成形され、取り出される。な
お、コア型13は1次成形、2次成形とも、共通形状で
ある。また、符号PLはパーティングラインを示してい
る。Then, the primary molding portion 1 is sent to a secondary molding cavity mold 15 and, as shown in FIG. 9, an upper layer portion covering the primary molding portion 1 which is the secondary molding portion 12 and a central display portion. D and D are injection-molded with a transparent resin and taken out. The core mold 13 has a common shape in both the primary molding and the secondary molding. The symbol PL indicates a parting line.
【0005】この2色成形方法では、不透明色の1次成
形部分1の上に2次成形部分12の透明色樹脂が、図1
0に示すゲート17から射出されている。しかし、図1
1に示す断面図の符号Kで示す部分は、2次成形キャビ
型15内に突出した形になっているので、2次成形で射
出された樹脂の熱を受けて1次成形部分1の一部が溶か
され、透明色の2次成形部分12に図10に符号Wで示
すように溶け込み、商品価値を損ねるという問題が生じ
る。In this two-color molding method, the transparent color resin of the secondary molding part 12 is formed on the opaque primary molding part 1 as shown in FIG.
It is ejected from the gate 17 shown in FIG. However, FIG.
The portion indicated by reference numeral K in the cross-sectional view shown in FIG. 1 has a shape protruding into the secondary molding cabinet mold 15, and therefore, the heat of the resin injected in the secondary molding receives the heat of the primary molding portion 1. The part is melted and melted into the transparent secondary molding part 12 as indicated by the symbol W in FIG. 10, which causes a problem that the commercial value is impaired.
【0006】[0006]
【発明が解決しようとする課題】したがって、本発明
は、2次成形の際に不透明色の1次成形部分が、透明色
の2次成形部分に溶け込まないパネルの2色成形方法を
提供することを目的としている。SUMMARY OF THE INVENTION Accordingly, the present invention provides a two-color molding method for a panel in which the opaque primary molding portion does not melt into the transparent secondary molding portion during the secondary molding. It is an object.
【0007】[0007]
【課題を解決するための手段】本発明によれば、2色成
形機により、1次成形でパネルの周辺部を構成する1次
成形部分を不透明色樹脂で射出成形し、その1次成形部
分を2次成形型に運び、2次成形でそのパネルの1次成
形部分を覆う上層部および中央の表示部を構成する2次
成形部分を透明色樹脂を射出して1次成形部分と一体に
成形するパネルの2色成形方法において、1次成形キャ
ビ型と前記表示部になる部分に突起部を設けたコア型と
で1次成形部分を成形し、次に2次成形部分を一体成形
する。According to the present invention, a two-color molding machine is used to perform injection molding of a primary molding portion constituting a peripheral portion of a panel by primary molding with an opaque color resin, and the primary molding portion To the secondary molding die, and the secondary molding portion forming the upper layer portion and the central display portion covering the primary molding portion of the panel by the secondary molding is injected with the transparent color resin to be integrated with the primary molding portion. In the two-color molding method for a panel to be molded, a primary molding part is molded by a primary molding cabinet mold and a core mold in which a protrusion is provided on the display part, and then the secondary molding part is integrally molded. .
【0008】または、前記1次成形のコア型に設けた突
起部の高さを前記1次成形部分の厚さより上方とする。Alternatively, the height of the protrusion provided on the core die for the primary molding is set higher than the thickness of the primary molding portion.
【0009】さらに、2次成形の射出ゲートが前記表示
部を避けた周辺部の方向に向けて設けられた型で射出成
形する。Further, the injection molding of the secondary molding is carried out by a mold provided in the direction of the peripheral portion avoiding the display portion.
【0010】さらに、前記2次成形で射出成形する樹脂
は、前記1次成形で射出成形する樹脂より融点の低い樹
脂である。Further, the resin injection-molded in the secondary molding has a lower melting point than the resin injection-molded in the primary molding.
【0011】[0011]
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態を説明する。Embodiments of the present invention will be described below with reference to the drawings.
【0012】図1および図2には本発明の一実施形態が
示されている。図1は1次成形の態様を示しており、コ
ア型3A側には、表示部Dになる部分に突起部3aが1
次成形部分1の厚さに相当する高さで対向する1次成形
キャビ型4Aに当接して設けられている。このコア型3
Aとキャビ型4Aとの空間に不透明色樹脂が射出され、
パネル10の中央の表示部Dとなる部分は突起部3aに
より除かれた形で1次成形部分1が成形される。1 and 2 show an embodiment of the present invention. FIG. 1 shows an aspect of primary molding, in which a protrusion 3a is formed on the core die 3A side at a portion to be a display portion D.
It is provided in contact with the primary molding cavity mold 4A facing at a height corresponding to the thickness of the secondary molding portion 1. This core type 3
Opaque resin is injected into the space between A and the mold 4A,
The primary molding portion 1 is molded in such a manner that the central portion of the panel 10 that serves as the display portion D is removed by the protrusion 3a.
【0013】次に、1次成形部分1は,図2に示すよう
に2次成形キャビ型5Aに送られ、2次成形キャビ型5
Aとコア型3Aとで、2次成形部分2Aである表示部D
および1次成形品を覆う上層部分とが透明色樹脂で一体
に成形され、そして取り出される。Next, the primary molding part 1 is sent to a secondary molding cabinet mold 5A as shown in FIG.
A and the core mold 3A, the display portion D which is the secondary molding portion 2A
And the upper layer portion covering the primary molded product is integrally molded with a transparent resin and then taken out.
【0014】この発明によれば、2次成形部分2Aは、
1次成形部分1を覆う上層部が、中央の表示部Dも同一
厚さになっており、図11に符号Kで示した1次成形部
分の2次成形部分2Aへの突出がないので、2次成形射
出による1次成形部分1の透明色部分への溶け込みが防
止される。According to the present invention, the secondary molding portion 2A is
Since the upper layer portion covering the primary molding portion 1 has the same thickness as the central display portion D, and there is no protrusion of the primary molding portion indicated by the symbol K in FIG. 11 to the secondary molding portion 2A, It is possible to prevent the primary molding portion 1 from melting into the transparent color portion due to the secondary molding injection.
【0015】また、図3および図4には、第2の発明の
実施形態が示されている。図3に示す1次成形におい
て、コア型3Bの表示部Dになる部分に設けられた突起
部3bは、1次成形部分1の厚みより上方までの高さと
し、対向する1次キャビ型4Bには凹部が設けられてい
る。そして、図4に示す2次キャビ型5Bではこの表示
部は平になっており、したがって、この2次成形部分2
Bの表示部Dは、2次成形部分2Bの他の部分より薄い
形となって成形される。Also, FIGS. 3 and 4 show an embodiment of the second invention. In the primary molding shown in FIG. 3, the protrusion 3b provided in the portion to be the display portion D of the core mold 3B is set to a height higher than the thickness of the primary molding portion 1 so that the opposing primary mold 4B is Is provided with a recess. Further, in the secondary cabinet mold 5B shown in FIG. 4, the display portion is flat, so that the secondary molded portion 2
The display portion D of B is formed in a shape thinner than the other portions of the secondary molding portion 2B.
【0016】この第2の発明によれば、図11に符号K
で示した1次成形部分は、一層隠された形になり、2次
成形時の溶け込みが防止される。According to the second aspect of the invention, reference numeral K in FIG.
The primary molding portion indicated by (1) has a more concealed shape, and melt-in during secondary molding is prevented.
【0017】次に、図5は第3の発明の実施形態を示し
ている。2次成形のキャビ型に設けられた2次成形用の
ゲート17は、周辺方向に寄せられ、その射出の方向を
周辺部Eに向けた位置G1に配設されている。このゲー
ト17から2次成形の射出が行われると、射出方向には
表示部Dは無く、したがって、前記の符号Kで示した突
出はなく1次成形部分1の溶け込みを生じない。また、
例え溶け込みがあっても、不透明色の周辺部であって不
具合が生じない。なお、符号G0は、従来のゲートの位
置を示している。Next, FIG. 5 shows an embodiment of the third invention. The secondary-molding gate 17 provided in the secondary-molding mold is arranged at a position G1 which is moved toward the peripheral direction and whose injection direction is directed to the peripheral portion E. When the secondary molding is injected from the gate 17, there is no display portion D in the injection direction, and therefore, there is no protrusion indicated by the above-mentioned symbol K and the fusion of the primary molding part 1 does not occur. Also,
Even if there is a melt-in, no trouble occurs in the peripheral part of opaque color. The symbol G0 indicates the position of the conventional gate.
【0018】また、2次成形で射出成形する樹脂を、1
次成形で射出成形する樹脂より融点の低い樹脂とする。
こうして、1次成形の樹脂の融点より低い温度で2次成
形射出を行えば、1次成形部分の溶け込みが防止され
る。Further, the resin to be injection-molded in the secondary molding is 1
The resin has a lower melting point than the resin to be injection-molded in the next molding.
In this way, if the secondary molding injection is performed at a temperature lower than the melting point of the resin for primary molding, melting of the primary molding portion is prevented.
【0019】そして、以上の各発明は、成形する形状・
仕様により適宜選択組み合わせて実施することができ
る。And, each of the above inventions has a shape
It can be implemented by appropriately selecting and combining according to the specifications.
【0020】[0020]
【発明の効果】以上説明したように、本発明によれば、
パネルの透明な表示部に、周辺部の不透明色の樹脂が溶
け込むのが防止できる。そして、上記の発明の各項を、
成形品の形状・仕様に適合するよう適宜選択組み合わせ
る事により、より効果的に実施できる。As described above, according to the present invention,
It is possible to prevent the opaque colored resin in the peripheral portion from melting into the transparent display portion of the panel. And, each item of the above invention,
It can be carried out more effectively by appropriately selecting and combining so as to match the shape and specifications of the molded product.
【図1】第1の発明の1次成形を示す型の断面図。FIG. 1 is a cross-sectional view of a mold showing the primary molding of the first invention.
【図2】第1の発明の2次成形を示す型の断面図。FIG. 2 is a sectional view of a mold showing the secondary molding of the first invention.
【図3】第2の発明の1次成形を示す型の断面図。FIG. 3 is a cross-sectional view of a mold showing the primary molding of the second invention.
【図4】第3の発明の2次成形を示す型の断面図。FIG. 4 is a sectional view of a mold showing the secondary molding of the third invention.
【図5】第3の発明の実施形態を示す型の上面図。FIG. 5 is a top view of a mold showing an embodiment of the third invention.
【図6】本発明で成形するパネルの上面図。FIG. 6 is a top view of a panel formed by the present invention.
【図7】図6の断面図。FIG. 7 is a sectional view of FIG. 6;
【図8】従来技術による1次成形を示す型の断面図。FIG. 8 is a sectional view of a mold showing a primary molding according to a conventional technique.
【図9】従来技術による2次成形を示す型の断面図。FIG. 9 is a cross-sectional view of a mold showing secondary molding according to a conventional technique.
【図10】従来技術による不具合の説明図。FIG. 10 is an explanatory diagram of a defect according to a conventional technique.
【図11】図10の断面図。11 is a sectional view of FIG.
1・・・1次成形部分 2A、2B、12・・・2次成形部分 3A、3B、13・・・コア型 3a、3b・・・突起部 4A、4B、14・・・1次成形キャビ型 14a・・・突起部 5A、5B、15・・・2次成形キャビ型 10・・・パネル 16・・・表示体 17・・・ゲート 1 ... Primary molding part 2A, 2B, 12 ... Secondary molding part 3A, 3B, 13 ... Core mold 3a, 3b ... Projection part 4A, 4B, 14 ... Primary molding cavity Mold 14a ... Protrusions 5A, 5B, 15 ... Secondary molding cabinet mold 10 ... Panel 16 ... Display body 17 ... Gate
Claims (4)
周辺部を構成する1次成形部分を不透明色樹脂で射出成
形し、その1次成形部分を2次成形型に運び、2次成形
でそのパネルの1次成形部分を覆う上層部および中央の
表示部を構成する2次成形部分を透明色樹脂を射出して
1次成形部分と一体に成形するパネルの2色成形方法に
おいて、1次成形キャビ型と前記表示部になる部分に突
起部を設けたコア型とで1次成形部分を成形し、次に2
次成形部分を一体成形することを特徴としたパネルの2
色成形方法。1. A two-color molding machine is used to perform injection molding of a primary molding portion forming a peripheral portion of a panel with an opaque color resin in the primary molding, and the primary molding portion is conveyed to a secondary molding die to carry out a secondary molding. In a two-color molding method for a panel, in which a transparent molding resin is injected into a secondary molding portion that constitutes an upper layer portion that covers the primary molding portion of the panel and a central display portion by molding, and is integrally molded with the primary molding portion, The primary molding part is molded by the primary molding cabinet mold and the core mold in which the projection portion is provided on the portion which becomes the display portion, and then
2 of the panel characterized by integrally molding the next molded part
Color molding method.
1次成形部分の厚みより上方までとした請求項1記載の
パネルの2色成形方法。2. The two-color molding method for a panel according to claim 1, wherein the height of the protrusion provided on the core mold is set to be higher than the thickness of the primary molding portion.
けた周辺部の方向に向けて設けられた型で射出成形する
請求項1または請求項2記載のパネルの2色成形方法。3. The two-color molding method for a panel according to claim 1, wherein the injection gate of the secondary molding is injection-molded by a mold provided in a direction of a peripheral portion avoiding the display portion.
記1次成形で射出成形する樹脂より融点の低い樹脂であ
る請求項1ないし請求項3のいずれかに記載のパネルの
2色成形方法。4. The two-color molding for a panel according to claim 1, wherein the resin injection-molded in the secondary molding has a lower melting point than the resin injection-molded in the primary molding. Method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7334658A JPH09174599A (en) | 1995-12-22 | 1995-12-22 | Two-color molding of panel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7334658A JPH09174599A (en) | 1995-12-22 | 1995-12-22 | Two-color molding of panel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09174599A true JPH09174599A (en) | 1997-07-08 |
Family
ID=18279822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7334658A Pending JPH09174599A (en) | 1995-12-22 | 1995-12-22 | Two-color molding of panel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09174599A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001207062A (en) * | 2000-01-25 | 2001-07-31 | Ono Sangyo Kk | Thermoplastic resin composition and its molding |
EP1177876A1 (en) * | 2000-07-31 | 2002-02-06 | Asahi Glass Company Ltd. | Vehicle resin window with an integrated border section |
JP2011187299A (en) * | 2010-03-08 | 2011-09-22 | Koito Mfg Co Ltd | Lens of lighting fixture for vehicle |
WO2012017554A1 (en) * | 2010-08-06 | 2012-02-09 | 株式会社クニムネ | Production device and production method for two-layer-structured lid having threaded portion |
WO2020231253A1 (en) * | 2019-05-10 | 2020-11-19 | Heathland Holding B.V. | Method and gasket for producing a polymethyl methacrylate plate |
CN114100153A (en) * | 2020-11-02 | 2022-03-01 | 株式会社万代 | Mold member and method for manufacturing mold member |
US11584055B2 (en) | 2017-04-21 | 2023-02-21 | Olympus Corporation | Two-color molding die, manufacturing method of two-color molded article, and imaging device including optical functional components |
-
1995
- 1995-12-22 JP JP7334658A patent/JPH09174599A/en active Pending
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JP2001207062A (en) * | 2000-01-25 | 2001-07-31 | Ono Sangyo Kk | Thermoplastic resin composition and its molding |
EP1177876A1 (en) * | 2000-07-31 | 2002-02-06 | Asahi Glass Company Ltd. | Vehicle resin window with an integrated border section |
JP2011187299A (en) * | 2010-03-08 | 2011-09-22 | Koito Mfg Co Ltd | Lens of lighting fixture for vehicle |
WO2012017554A1 (en) * | 2010-08-06 | 2012-02-09 | 株式会社クニムネ | Production device and production method for two-layer-structured lid having threaded portion |
US11584055B2 (en) | 2017-04-21 | 2023-02-21 | Olympus Corporation | Two-color molding die, manufacturing method of two-color molded article, and imaging device including optical functional components |
WO2020231253A1 (en) * | 2019-05-10 | 2020-11-19 | Heathland Holding B.V. | Method and gasket for producing a polymethyl methacrylate plate |
NL2023107B1 (en) * | 2019-05-10 | 2020-11-30 | Heathland Holding B V | Method and gasket for producing a polymethyl methacrylate plate |
CN114100153A (en) * | 2020-11-02 | 2022-03-01 | 株式会社万代 | Mold member and method for manufacturing mold member |
WO2022091844A1 (en) * | 2020-11-02 | 2022-05-05 | 株式会社バンダイ | Model component and model component production method |
JP2022073659A (en) * | 2020-11-02 | 2022-05-17 | 株式会社バンダイ | Model parts and manufacturing method of model parts |
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