JPH0462845B2 - - Google Patents
Info
- Publication number
- JPH0462845B2 JPH0462845B2 JP62152446A JP15244687A JPH0462845B2 JP H0462845 B2 JPH0462845 B2 JP H0462845B2 JP 62152446 A JP62152446 A JP 62152446A JP 15244687 A JP15244687 A JP 15244687A JP H0462845 B2 JPH0462845 B2 JP H0462845B2
- Authority
- JP
- Japan
- Prior art keywords
- layer side
- mold
- molded
- uneven
- inner layer
- 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 - Lifetime
Links
- 229920005989 resin Polymers 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 15
- 229920003002 synthetic resin Polymers 0.000 claims description 15
- 239000000057 synthetic resin Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 13
- 230000001747 exhibiting effect Effects 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 49
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000002356 single layer 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
-
- 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)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、例えばレンズカツト（ダイヤカツト
とも呼ばれる。）等の凹凸模様を外表面から視認
可能に呈出させて車輌用フイニツシヤー等の如き
積層樹脂成形品を製造するのに適用される方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to the production of laminated resin molded products such as vehicle finishers, etc., by visually presenting an uneven pattern such as a lens cut (also called a diamond cut) from the outer surface. It relates to the method applied for manufacturing.
背景技術
第６図で示すように、コンビネーシヨンランプ
Ｃと隣接して配置されるフイニツシヤーＦはコン
ビネーシヨンランプＣを点燈しないときにコンビ
ネーシヨンランプＣのカバー面と同じパターンで
見えるようにするのが好ましい。そのコンビネー
シヨンランプＣは黄，赤に着色したアクリル樹脂
等の透明な合成樹脂で形成され、第７図で示す如
く平面的には桝目状で個々的に深みを呈するべく
第８，９図で示すような多数のレンズカツトＬで
凹凸模様P1が外表面側から視認できるよう裏面
側に付形されている。また、フイニツシヤーＦは
第１０図で示す如くボス部Ｂで軸受けすることに
よりスタツトボルト等の取付具Ｓを裏面側に備付
けるところから、このボス部Ｂが外表面側から透
視できないようにするべく内層側を有色不透明な
合成樹脂で形成ししかも装飾面となる外層側を有
色透明な合成樹脂で積層成形するものであるた
め、そのフイニツシヤーＦでも第７図で示す如く
凹凸模様P2を視認可能に形成するには互いに積
層する内層側と外層側との相対面に第８，９図で
示すと同様な多数のレンズカツトＬを付形するこ
とが必要となる。BACKGROUND ART As shown in Fig. 6, the finisher F arranged adjacent to the combination lamp C is designed to appear in the same pattern as the cover surface of the combination lamp C when the combination lamp C is not turned on. is preferred. The combination lamp C is made of transparent synthetic resin such as acrylic resin colored yellow and red, and as shown in FIG. With a large number of lens cuts L as shown, a concavo-convex pattern P1 is formed on the back side so that it can be seen from the outside surface side. Furthermore, as shown in Fig. 10, the finisher F is equipped with a mounting tool S such as a stud bolt on the back side by bearing with a boss part B. Therefore, in order to prevent this boss part B from being seen through from the outside surface side, the inner layer is Since the side is formed of a colored opaque synthetic resin and the outer layer side, which becomes the decorative surface, is laminated and molded with a colored transparent synthetic resin, the uneven pattern P 2 can be seen even in the finisher F as shown in Fig. 7. In order to form this, it is necessary to shape a large number of lens cuts L similar to those shown in FIGS. 8 and 9 on the opposing surfaces of the inner and outer layers that are stacked on each other.
このフイニツシヤーＦを製造する方法として考
えられるものとして、第１１図で示すように有色
不透明な合成樹脂１′を加熱溶融させて第１のキ
ヤビテイ型５とコア型６に射出することにより内
層側を最初に成形するとすれば、その内層側の相
対面を付形するキヤビテイ型５には第１２図に示
す如きレンズカツトの弧状凸部付形部分５ａを球
面凸状に突出させると共に境界線並びに交点に相
当する線状凹部付形部分５ｂを狭幅に切り込んだ
付形面を有するものを用い、第１３図で示すよう
にレンズカツトの弧状部分１ａを窪ませて交点１
ｂを結ぶ境界線１ｃを切立てた凹凸面に内層側１
を形成することが考えられる。このキヤビテイ型
５で付形した内層側１でも第１４図で示すように
コア型６で保持する内層側１の凹凸面と第２のキ
ヤビテイ型７との間に有色透明な合成樹脂２′を
射出して第１５図で示す如く外層側２を積層成形
すれば、そのフイニツシヤーＦは内層側１と外層
側２との間に付形した凹凸面がレンズカツト模様
として外層側２から視認可能なものに形成できる
ようになる。 As shown in FIG. 11, a possible method for manufacturing this finisher F is to heat and melt a colored opaque synthetic resin 1' and inject it into the first cavity mold 5 and core mold 6, thereby forming the inner layer. If molding is performed first, the cavity mold 5 that shapes the relative surface on the inner layer side has an arcuate convex shaping portion 5a of the lens cut projected in a spherical convex shape as shown in FIG. Using a lens cutter having a shaped surface formed by narrowly cutting the corresponding linear concave shaped portion 5b, the arcuate portion 1a of the lens cut is depressed and the intersection point 1 is made as shown in FIG.
Inner layer side 1 is placed on the uneven surface with boundary line 1c connecting
It is possible to form a In the inner layer side 1 shaped with this cavity mold 5, as shown in FIG. When the outer layer side 2 is laminated and molded by injection as shown in FIG. 15, the finisher F is such that the uneven surface formed between the inner layer side 1 and the outer layer side 2 is visible as a lens cut pattern from the outer layer side 2. It becomes possible to form.
発明が解決しようとする問題点
然し、この積層樹脂成形品の製造方法では、ま
た、内層側１の凹凸面にレンズカツトの交点１ｂ
並びに境界線１ｃの鋭角に尖る側が突出している
ことにより外層側２を形成する溶融樹脂２′の射
出で溶かして凹凸模様を不鮮明なものにししかも
透明な外層側２に内層側１の不透明な合成樹脂
２′が混入する事態も招き易い。キヤビテイ型５
に放電加工で第１２図に示す如き凹凸状の付形面
を形成した後の型面磨き加工時に線状凹部付形部
分５ｂが狭幅に切り込まれているため、その奥ま
でも十分に磨き込むことができないからレンズカ
ツトの境界線を刻明に成形できず、鮮明に視認可
能な凹凸模様を呈出できない虞れもある。Problems to be Solved by the Invention However, in this method of manufacturing a laminated resin molded product, the intersection point 1b of the lens cut is formed on the uneven surface of the inner layer side 1.
In addition, since the sharply pointed side of the boundary line 1c protrudes, the molten resin 2' forming the outer layer side 2 is melted by injection to make the uneven pattern unclear, and moreover, the transparent outer layer side 2 and the inner layer side 1 are opaque. This also tends to cause the resin 2' to get mixed in. Cavity type 5
After forming an uneven shaped surface as shown in FIG. 12 by electric discharge machining, the linear concave shaped portion 5b is cut narrowly during the polishing process of the mold surface, so that it is possible to fully reach the depths of the shaped portion 5b. Since it cannot be polished, the boundary line of the lens cut cannot be clearly formed, and there is a possibility that a clearly visible uneven pattern cannot be produced.
問題点を解決するための手段
本発明に係る凹凸模様を呈する積層樹脂成形品
の製造方法においては、最初に金型成形する片層
側の他との相対面を凹凸模様の線状凹部付形部分
が弧状凸部付形部分より切立つた成形面を有する
金型で弧状凸部が膨出する凹凸面に付形し、その
凹凸面を積層させて他層側を一体成形するように
されている。Means for Solving the Problems In the method for manufacturing a laminated resin molded product exhibiting an uneven pattern according to the present invention, first, the surface of one layer that is molded with a mold, opposite to the other, is shaped with linear concave portions having an uneven pattern. A mold having a molding surface in which a part is steeper than the arcuate convexity forming part is used to shape the convexoconcave surface in which the arcuate convexity bulges out, and the concave and convex surfaces are laminated to integrally mold the other layer side. ing.
作 用
この凹凸模様を呈する積層樹脂成形品の製造方
法では、その凹凸面が凹凸模様の線状凹部を窪ま
せて弧状凸部を突出させたものになるから他層側
の溶融樹脂を射出するに伴つて凹凸面の突出部分
を溶かし込む事態を防止でき、また凹凸模様を付
形する金型面が線状凹部付形部分を突出させて弧
状凸部付形部分を窪ませことにより形成されてい
るから全面を容易に磨き処理できて最初に金型成
形する片層側に刻明な凹凸面を付形できる。Function In this method of manufacturing a laminated resin molded product exhibiting an uneven pattern, the uneven surface is made by hollowing out the linear depressions and protruding the arcuate protrusions, so the molten resin from the other layer side is injected. It is possible to prevent the protruding parts of the uneven surface from melting due to the process, and the mold surface forming the uneven pattern is formed by protruding the linear concave forming part and recessing the arcuate convex forming part. Because of this, the entire surface can be easily polished and a sharply uneven surface can be formed on one layer that is molded first.
実施例
以下、第１〜５図を参照して説明すれば、次の
通りである。Embodiments The following description will be made with reference to FIGS. 1 to 5.
この製造方法は外表面側から凹凸模様を視認可
能な車輌用のフイニツシヤーを形成するのに適用
されており、その凹凸模様はポリカーボネイトや
或いはこれとABS樹脂との混合樹脂等の有色不
透明な合成樹脂で形成する内層側とアクリル樹脂
等の有色透明な合成樹脂で形成する外層側との相
対面にレンズカツトの凹凸面を付形することによ
り呈出できるよう成形するものである。この成形
にあたつては好ましい実施例として内層側を最初
に成形することが行われており、その樹脂成形は
インジエクシヨン成形型を用いることにより最初
に射出する合成樹脂として後に積層する合成樹脂
の溶融温度よりも高いものを用いるようにすると
よい。 This manufacturing method is applied to form finishers for vehicles that have an uneven pattern visible from the outside surface, and the uneven pattern is made of colored opaque synthetic resin such as polycarbonate or a mixed resin of polycarbonate and ABS resin. The uneven surface of the lens cut is formed on the opposing surface of the inner layer made of acrylic resin and the outer layer made of a colored transparent synthetic resin such as acrylic resin. In this molding, as a preferred embodiment, the inner layer side is molded first, and the resin molding is performed by using an injection mold to melt the synthetic resin that will be laminated later as the first injected synthetic resin. It is advisable to use one that is higher than the temperature.
まず、第１図で示す第１のキヤビテイ型５０と
コア型６０を用いて有色不透明な合成樹脂１０′
を射出成形することにより内層側を形成する。こ
の金型にはレンズカツトの弧状凸部を付形する弧
状凹部５０ａとレンズカツトの交点を結ぶ境界線
を付形する線状凸部５０ｂがキヤビテイ型５０の
付形面に形成されており、その弧状凹部５０ａは
いずれも曲率を同じに形成するか或いは適宜に違
えるようにもできる。また、線状凸部５０ｂは
縦，横寸法を同一にし或いは異ならしめてもよ
く、これらで形成する付形面は放電加工の後に全
面が所定形状を呈するよう十分に研磨処理するこ
とができる。このキヤビテイ型５０とコア型６０
とでは第３図に示す如く弧状凸部１０ａを広幅に
隆起させて線状凹部１０ｂを鋭角で刻明に切込ん
だレンズカツト模様の凹凸面を内層側１０に形成
でき、その裏面側にはリブやボス等の付属部１１
も一体に突出成形するようにできる。この内層側
１０は第４図で示すようにコア型６０で保持して
別の第２のキヤビテイ型７０との間に凹凸面側を
相対させて位置することにより透明な合成樹脂２
０′を射出すれば、第５図で示すように内層側１
０の凹凸面に外層側２０を積層成形したフイニツ
シヤーとして形成できる。その加熱溶融樹脂２
０′の射出に伴つては内層側１０の弧状凸部１０
ａが広幅に隆起して線状凹部１０ｂが狭幅に切り
込まれているから内層側１０を溶出させることが
なく、しかも内層側１０の凹凸面が極めて刻明に
付形されていることにより鮮明な凹凸模様を呈出
できるようになる。なお、内層側１０の樹脂とし
て外層側２０の樹脂よりも溶融強度の高いものを
使用すれば外層側２０の加熱溶融樹脂２１が内層
側１０の凹凸面を溶かすことがないので更に好ま
しい。また、この外層側２０の積層成形は内層側
１０と溶解度パラメーターが同一または近似した
ものを用いれば密着力が向上して極めて強固に内
層側１０と一体成形できるようになる。 First, using a first cavity mold 50 and a core mold 60 shown in FIG. 1, a colored opaque synthetic resin 10'
The inner layer side is formed by injection molding. In this mold, an arcuate recess 50a that shapes the arcuate protrusion of the lens cut and a linear protrusion 50b that shapes the boundary line connecting the intersection of the lens cut are formed on the shaping surface of the cavity mold 50, and the arcuate The concave portions 50a may all have the same curvature, or may be made to have different curvatures as appropriate. Further, the linear convex portions 50b may have the same or different vertical and horizontal dimensions, and the shaped surface formed by these can be sufficiently polished so that the entire surface has a predetermined shape after electrical discharge machining. This cavity mold 50 and core mold 60
As shown in FIG. 3, an uneven surface with a lens cut pattern can be formed on the inner layer side 10, in which the arcuate convex portion 10a is raised widely and the linear concave portion 10b is notched at an acute angle, and ribs are formed on the back side. Attachments 11 such as and bosses
It can also be made to be integrally protruded. As shown in FIG. 4, this inner layer side 10 is held by a core mold 60 and positioned between another second cavity mold 70 with the uneven surface side facing each other, thereby forming a transparent synthetic resin 2.
0', the inner layer side 1 is injected as shown in Figure 5.
It can be formed as a finisher in which the outer layer side 20 is laminated and molded on the uneven surface of 0. The heated melted resin 2
With the injection of 0', the arcuate convex portion 10 on the inner layer side 10
Since a is raised widely and the linear recess 10b is narrowly cut, the inner layer side 10 is not eluted, and the uneven surface of the inner layer side 10 is shaped very clearly. It becomes possible to present a clear uneven pattern. It is more preferable to use a resin for the inner layer side 10 that has a higher melting strength than the resin for the outer layer side 20 because the heated molten resin 21 on the outer layer side 20 will not melt the uneven surface of the inner layer side 10. Further, in lamination molding of the outer layer side 20, if a material having the same or similar solubility parameter as the inner layer side 10 is used, the adhesion will be improved and it will be possible to integrally mold the outer layer side 20 with the inner layer side 10 very firmly.
なお、上述した実施例ではレンズカツトの凹凸
面を付形したが、これに代えて半円乃至半球形の
弧状凸部で或いは長手方向に延びる半円状の凸条
で凹凸面を形成することができる。また、工程的
に外層側を先に形成して内層側を積層成形するこ
ともでき、更には片層側を形成後にコア型から型
外しして別のキヤビテイ型とコア型とで他層側を
積層成形するようにもできる。 In addition, in the above-mentioned embodiment, the uneven surface of the lens cut is shaped, but instead of this, the uneven surface may be formed with a semicircular or hemispherical arc-shaped convex part or with a semicircular convex strip extending in the longitudinal direction. can. In addition, it is also possible to form the outer layer first and then perform laminated molding on the inner layer. Furthermore, after forming one layer, the mold is removed from the core mold and the other layer is molded using another cavity mold and core mold. It can also be laminated and molded.
発明の効果
以上の如く、本発明に係る凹凸模様を呈する積
層樹脂成形品の製造方法に依れば、凹凸模様を鮮
明に描出できて極めて良好な装飾面として形成で
きるようになる。Effects of the Invention As described above, according to the method of manufacturing a laminated resin molded product exhibiting an uneven pattern according to the present invention, the uneven pattern can be clearly depicted and an extremely good decorative surface can be formed.
第１図は本発明に係る製造方法で最初に形成す
る片層側の成形工程を示す説明図、第２図は同工
程で用いるキヤビテイ型の付形面を示す部分拡大
斜視図、第３図は同工程で得られる片層側の凹凸
面を示す部分拡大斜視図、第４図は他層側の積層
成形工程を示す説明図、第５図は同方法で得られ
る積層成形品の部分断面図、第６，７図は同積層
成形品の一例を示す説明図、第８図は同積層成形
品の隣接装備部材を示す部分断面図、第９図は同
装備部材に付形する凹凸模様の一部を描出した拡
大斜視図、第１０図は積層成形品の背面側を示す
斜視図、第１１図は本発明の背景技術として考え
られる積層成形品の片層側を成形する工程の説明
図、第１２図は同成形に適用するキヤビテイ型の
付形面を示す一部拡大斜視図、第１３図は同型で
成形した片層側の凹凸面を示す一部拡大斜視図、
第１４図は他層側の積層工程を示す説明図、第１
５図は同方法で得られる積層成形品の部分断面図
である。
１０……内層側、１０ａ……弧状凸部、１０ｂ
……線状凹部、１１……ボス，リブ等の付属部
分、２０……外層側、５０……キヤビテイ型、５
０ａ……弧状凸部の付形部分、５０ｂ……線状凹
部の付形部分。
Fig. 1 is an explanatory diagram showing the molding process of the single layer side formed first in the manufacturing method according to the present invention, Fig. 2 is a partially enlarged perspective view showing the shaped surface of the cavity mold used in the same process, and Fig. 3 is a partially enlarged perspective view showing the uneven surface on one layer side obtained in the same process, FIG. 4 is an explanatory view showing the laminated molding process on the other layer side, and FIG. 5 is a partial cross section of the laminated molded product obtained by the same method. Figures 6 and 7 are explanatory drawings showing an example of the same laminated molded product, Figure 8 is a partial sectional view showing adjacent equipment members of the same laminated molded product, and Figure 9 is an uneven pattern formed on the same equipment member. FIG. 10 is a perspective view showing the back side of the laminate molded product, and FIG. 11 is an explanation of the process of molding one layer side of the laminate molded product, which is considered as background art of the present invention. 12 is a partially enlarged perspective view showing the shaping surface of the cavity mold applied to the same molding, and FIG. 13 is a partially enlarged perspective view showing the uneven surface of one layer side molded with the same mold,
Figure 14 is an explanatory diagram showing the lamination process on the other layer side,
FIG. 5 is a partial cross-sectional view of a laminated molded product obtained by the same method. 10... Inner layer side, 10a... Arc-shaped convex portion, 10b
... Linear recess, 11 ... Attached parts such as bosses and ribs, 20 ... Outer layer side, 50 ... Cavity type, 5
0a...A shaped portion of an arcuate convex portion, 50b...A shaped portion of a linear concave portion.
Claims (1)
色または無色透明な合成樹脂で形成する外層側と
の相対面に付形する多数の弧状凸部，線状凹部で
外層側から凹凸模様を視認可能に形成する積層樹
脂成形品を製造するに際し、最初に金型成形する
片層側の他との相対面を凹凸模様の線状凹部付形
部分が弧状凸部付形部分より切立つた成形面を有
する金型で弧状凸部が膨出する凹凸面に付形し、
その凹凸面を積層させて他層側を一体成形するよ
うにしたことを特徴とする凹凸模様を呈する積層
樹脂成形品の製造方法。 ２ 上記凹凸模様の線状凹部付形部分が弧状凸部
付形部分より切立つた成形面を有する第１のキヤ
ビテイ型とコア型とで外層側との相対面を弧状凸
部が膨出する凹凸面に付形させて内層側を最初に
成形した後、その内層側を保持するコア型と第２
のキヤビテイ型とで外層側を一体成形するように
した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。 ３ 上記最初に金型成形する片層側の合成樹脂と
して他層側の合成樹脂よりも溶融温度の相対的に
高いものを用いるようにした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。 ４ 上記内層側の金型成形時にボス部，リブ部等
の付属部分を裏面側から突出させて一体成形する
ようにした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。[Claims] 1. A large number of arcuate convex portions and linear concave portions formed on the opposing surfaces of the inner layer side formed of a colored opaque synthetic resin and the outer layer side formed of a colored or colorless and transparent synthetic resin. When manufacturing a laminated resin molded product in which a concavo-convex pattern is formed in a visible manner, the linear concave-shaped portion of the concave-convex pattern is first formed into an arcuate convex-shaped portion on the surface of one layer that is molded with a mold relative to the other layer. A mold with a steeper molding surface is used to form an uneven surface with bulging arcuate protrusions,
A method for manufacturing a laminated resin molded product exhibiting an uneven pattern, characterized in that the uneven surfaces are laminated and the other layer side is integrally molded. 2 The arcuate convex portion bulges out from the surface opposite to the outer layer side of the first cavity mold and the core mold, each having a molding surface in which the linear concave portion of the uneven pattern stands out from the arcuate convex portion. After the inner layer side is first molded by shaping the uneven surface, a core mold and a second mold are used to hold the inner layer side.
A method for manufacturing a laminated resin molded product according to claim 1, wherein the outer layer side is integrally molded with a cavity mold. 3. The laminate according to claim 1 or 2, wherein a synthetic resin having a relatively higher melting temperature than the synthetic resin of the other layer is used as the synthetic resin of one layer to be molded first. Method for manufacturing resin molded products. 4. Claim 1 or 2, wherein attached parts such as bosses and ribs are made to protrude from the back side and are integrally molded when molding the inner layer side.
A method for producing a laminated resin molded product as described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62152446A JPS63317315A (en) | 1987-06-19 | 1987-06-19 | Manufacture of laminated resin molded product of recessed and projecting pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62152446A JPS63317315A (en) | 1987-06-19 | 1987-06-19 | Manufacture of laminated resin molded product of recessed and projecting pattern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63317315A JPS63317315A (en) | 1988-12-26 |
| JPH0462845B2 true JPH0462845B2 (en) | 1992-10-07 |
Family
ID=15540702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62152446A Granted JPS63317315A (en) | 1987-06-19 | 1987-06-19 | Manufacture of laminated resin molded product of recessed and projecting pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63317315A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0686077B2 (en) * | 1990-07-16 | 1994-11-02 | 共和工業株式会社 | Multi-layer molding method for thermoplastic synthetic resin materials |
| JP4771118B2 (en) * | 2005-06-20 | 2011-09-14 | 豊田合成株式会社 | Manufacturing method of resin laminated member |
| IT201900025117A1 (en) * | 2019-12-20 | 2021-06-20 | De Longhi Appliances Srl | METHOD AND APPARATUS FOR THE REALIZATION OF A COMPONENT IN PLASTIC MATERIAL, AND COMPONENT IN PLASTIC MATERIAL |
-
1987
- 1987-06-19 JP JP62152446A patent/JPS63317315A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63317315A (en) | 1988-12-26 |
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