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JP2016078387A - Resin molded article - Google Patents

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JP2016078387A
JP2016078387A JP2014214317A JP2014214317A JP2016078387A JP 2016078387 A JP2016078387 A JP 2016078387A JP 2014214317 A JP2014214317 A JP 2014214317A JP 2014214317 A JP2014214317 A JP 2014214317A JP 2016078387 A JP2016078387 A JP 2016078387A
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base material
resin molded
molded product
weld line
molten resin
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JP6422729B2 (en
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麻衣子 梶川
Maiko Kajikawa
麻衣子 梶川
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Kojima Industries Corp
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Kojima Press Industry Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a molded article comprising a base material molded from a molten resin in which aluminum flakes are kneaded, where, even when a light-dark difference is generated due to differences in orientation of the aluminum flakes, poor appearances because of this light-dark difference generated are made inconspicuous.SOLUTION: The resin molded article 1 comprises a base material 30 molded from a molten resin 20 in which aluminum flakes 22 are kneaded. On a design face 32 of the base material 30, there is formed a weld line 34 due to a confluence part 24 generated by wrapping around of the molten resin 20 in a cavity 16. On the design face 32 in the neighborhood of the weld line 34, there are formed a plurality of crimps 40.SELECTED DRAWING: Figure 5

Description

本発明は、樹脂成形品に関し、詳しくは、アルミフレークが練り込まれた溶融樹脂から成形された基材から成る樹脂成形品に関する。   The present invention relates to a resin molded product, and more particularly to a resin molded product comprising a base material molded from a molten resin in which aluminum flakes are kneaded.

従来、メタリックな加飾が施された樹脂成形品を作る場合、例えば、特許文献１に示すように、溶融樹脂を冷却固化させて成形した基材の意匠面にメタリックな塗装を施して作る技術が既に知られている。このように、メタリックな塗装を施すと、図９〜１１に示すように、射出時に成形金型１１０のキャビティ１１６内を溶融樹脂１２０が回り込むといった複雑な形状の基材１３０であっても、その成形後の意匠面に生じる溶融樹脂１２０の合流部位１２４の跡（ウエルドライン１３４）を隠すことができる。したがって、出来上がった樹脂成形品の見栄えの悪化を防ぐことができる。   Conventionally, when making a resin molded product with a metallic decoration, for example, as shown in Patent Document 1, a technique of applying a metallic coating to a design surface of a base material formed by cooling and solidifying a molten resin Is already known. Thus, when metallic coating is applied, even if the base material 130 has a complicated shape such that the molten resin 120 wraps around the cavity 116 of the molding die 110 at the time of injection, as shown in FIGS. A trace (weld line 134) of the joining portion 124 of the molten resin 120 generated on the design surface after molding can be hidden. Accordingly, it is possible to prevent the appearance of the finished resin molded product from deteriorating.

特開２００９−０３９９６３号公報JP 2009-039963 A

しかしながら、上述した特許文献１の技術では、成形後の基材１３０の意匠面にメタリックな塗装を施す塗装工程を必要とするため、樹脂成形品の製造工程が煩雑になってしまうという問題が発生していた。この問題を解決するために、予め、溶融樹脂１２０にアルミフレーク１２２を練り込んでおき、成形後の基材１３０そのものにメタリック感を持たせることが考案された。しかしながら、この考案では、図１１に示すように、練り込まれたアルミフレーク１２２は、成形金型１１０のキャビティ１１６面に対して対向する部位では略横向きに配向されることとなり、溶融樹脂１２０の合流部位１２４では略縦向きに配向されることとなる。そのため、ウエルドライン１３４の近傍において、アルミフレーク１２２の配向が異なってしまうこととなっていた。このように配向が異なってしまうと、ウエルドライン１３４の近傍において、アルミフレーク１２２の反射の度合いが変わってしまい、成形後の基材１３０のメタリック感に明暗の差が生じてしまうこととなっていた（図１１において、ｄ）。結果として、出来上がった樹脂成形品に概観不良が生じてしまうことがあった。   However, since the technique of Patent Document 1 described above requires a coating process for applying a metallic coating to the design surface of the base material 130 after molding, there is a problem that the manufacturing process of the resin molded product becomes complicated. Was. In order to solve this problem, it has been devised that aluminum flakes 122 are kneaded in advance in the molten resin 120 so that the molded base material 130 itself has a metallic feel. However, in this device, as shown in FIG. 11, the kneaded aluminum flake 122 is oriented substantially laterally at a portion facing the cavity 116 surface of the molding die 110, and the molten resin 120 In the merge part 124, it will be oriented in a substantially vertical direction. Therefore, the orientation of the aluminum flake 122 is different in the vicinity of the weld line 134. If the orientations are different in this way, the degree of reflection of the aluminum flakes 122 changes in the vicinity of the weld line 134, and a difference in brightness and darkness occurs in the metallic feeling of the base material 130 after molding. (D in FIG. 11). As a result, poor appearance may occur in the finished resin molded product.

本発明は、このような課題を解決しようとするもので、その目的は、アルミフレークが練り込まれた溶融樹脂から成形された基材から成っており、このアルミフレークの配向の違いによってメタリック感に明暗の差が生じても、この生じた明暗の差による外観不良を目立たなくさせることである。   The present invention is intended to solve such a problem, and the object thereof is composed of a base material formed from a molten resin in which aluminum flakes are kneaded. Even if there is a difference in brightness, the appearance defect due to the generated difference in brightness is made inconspicuous.

本発明は、上記の目的を達成するためのものであって、以下のように構成されている。
請求項１に記載の発明は、アルミフレークが練り込まれた溶融樹脂から成形された基材から成る樹脂成形品である。基材の意匠面には、キャビティ内における溶融樹脂の回り込みによって生じる合流部位によるウエルドラインが形成されている。ウエルドラインの近傍における意匠面には、複数のシボが形成されている。 The present invention is for achieving the above object, and is configured as follows.
The invention according to claim 1 is a resin molded article comprising a base material molded from a molten resin in which aluminum flakes are kneaded. On the design surface of the base material, a weld line is formed by a merging portion generated by the molten resin wrapping around in the cavity. A plurality of textures are formed on the design surface in the vicinity of the weld line.

請求項１の発明によれば、この樹脂成形品を正面視や斜面視したとき、この複数のシボによって生じるアルミフレークの反射による明暗の差を認識できる。このとき、ウエルドラインは、このシボが形成されている範囲に形成されている。そのため、従来技術と同様に、ウエルドラインの近傍において、アルミフレークの配向が異なってしまうことにより、このアルミフレークの反射の度合いが変わってしまい、成形後の基材のメタリック感に明暗の差を有する部位が生じてしまっても、このメタリック感に明暗の差を有する部位が複数のシボが形成されている範囲に含まれることとなる。したがって、このメタリック感に明暗の差を有する部位を複数のシボによって生じるアルミフレークの反射による明暗の差に含ませることができる。このように含ませることができると、このメタリック感に明暗の差を有する部位が紛れるため、このメタリック感に明暗の差を有する部位を気付かせ難くできる。結果として、樹脂成形品の外観不良を目立たなくさせることができる。   According to the first aspect of the present invention, when the resin molded product is viewed from the front or the slope, the difference in brightness due to the reflection of the aluminum flakes caused by the plurality of textures can be recognized. At this time, the weld line is formed in a range where the texture is formed. For this reason, as in the prior art, the orientation of the aluminum flakes changes in the vicinity of the weld line, so that the degree of reflection of the aluminum flakes changes, resulting in a difference in brightness in the metallic feeling of the base material after molding. Even if the part which has is produced, the part which has the difference of light and dark in this metallic feeling will be included in the range in which the plurality of wrinkles are formed. Therefore, a portion having a difference in brightness and darkness in the metallic feeling can be included in the difference in brightness due to reflection of aluminum flakes caused by a plurality of embossments. If it can be included in this manner, a part having a difference in brightness and darkness is lost in the metallic feeling, and thus it is difficult to notice a part having a difference in brightness and darkness in the metallic feeling. As a result, the appearance defect of the resin molded product can be made inconspicuous.

また、請求項２に記載の発明は、請求項１に記載の樹脂成形品であって、シボは、側面視において、基材の意匠面から突出する台形を成している。台形は、下辺と、上辺と、これら下辺の一端と上辺の一端および下辺の他端と上辺の他端とを繋ぐ２つの斜辺とから構成されている。下辺と斜辺との内角は、４０°〜６０°となっている。   The invention according to claim 2 is the resin molded product according to claim 1, wherein the texture has a trapezoidal shape protruding from the design surface of the base material in a side view. The trapezoid is composed of a lower side, an upper side, and two oblique sides that connect one end of these lower sides, one end of the upper side, the other end of the lower side, and the other end of the upper side. The inner angle between the lower side and the hypotenuse is 40 ° to 60 °.

請求項２の発明によれば、シボの意匠性も良く、ウエルドラインの外観も良く、ゲート付近の外観も良くできる。   According to the invention of claim 2, the design of the texture is good, the appearance of the weld line is good, and the appearance near the gate can be improved.

実施例に係る成形金型の平面図である。It is a top view of the shaping die concerning an example. 図１の成形金型に溶融樹脂を射出している途中の状態を示す模式図である。It is a schematic diagram which shows the state in the middle of injecting molten resin to the shaping die of FIG. 図２をIII−III線で切っており、アルミフレークの配向を示す模式図である。FIG. 2 is a schematic diagram showing the orientation of aluminum flakes, taken along line III-III. 図２において、溶融樹脂の射出が完了した状態を示す模式図である。In FIG. 2, it is a schematic diagram which shows the state which injection | pouring of molten resin was completed. 図４をＶ−Ｖ線で切っており、アルミフレークの配向を示す模式図である。FIG. 4 is a schematic view showing the orientation of the aluminum flakes taken along the line VV. 図４において、完成した樹脂成形品のウエルドラインの近傍におけるアルミフレークの配向を示す模式図であり、正面視のときのアルミフレークの反射の明暗を示している。In FIG. 4, it is a schematic diagram which shows the orientation of the aluminum flakes in the vicinity of the weld line of the completed resin molded product, and shows the brightness of the reflection of the aluminum flakes when viewed from the front. 図６において、斜面視のときのアルミフレークの反射の明暗を示している。In FIG. 6, the brightness and darkness of the reflection of the aluminum flakes when viewed from a slope are shown. 出来上がった樹脂成形品において、下辺に対する斜辺の角度を変更したときの意匠性、ウエルドライン外観、ゲート付近の外観の目視の判定の結果を示す図である。In the finished resin molded product, it is a figure which shows the result of visual determination of the designability, the weld line external appearance, and the external appearance of a gate vicinity when the angle of the oblique side with respect to a lower side is changed. 従来技術に係る成形金型の平面図である。It is a top view of the shaping die concerning a prior art. 図８の成形金型に溶融樹脂を射出した状態を示す模式図である。It is a schematic diagram which shows the state which injected the molten resin to the shaping die of FIG. 図１０をＸI−ＸI線で切っており、アルミフレークの配向を示す模式図である。FIG. 10 is a schematic diagram showing the orientation of aluminum flakes, taken along line XI-XI.

以下、本発明を実施するための形態を、図１〜８を用いて説明する。まず、図１を参照して、実施例に係る成形金型１０を説明する。この成形金型１０は、例えば、下型１２と、この下型１２に対して型締め型開き可能な上型１４とから構成されている。これら下型１２と上型１４とには、互い１２、１４を型締めすると、所望する形状の基材３０を成形可能なキャビティ１６が形成されている。   Hereinafter, the form for implementing this invention is demonstrated using FIGS. First, a molding die 10 according to an embodiment will be described with reference to FIG. The molding die 10 includes, for example, a lower die 12 and an upper die 14 that can be clamped and opened with respect to the lower die 12. The lower mold 12 and the upper mold 14 are formed with cavities 16 that can mold a base material 30 having a desired shape when the molds 12 and 14 are clamped.

このキャビティ１６は、射出成形機のノズル（いずれも図示しない）から射出された溶融樹脂２０の流入口となるゲート１８に対して連通した状態となっている。また、このキャビティ１６は、図１からも明らかなように、平面視において、略０字状となっている。そのため、従来技術と同様に、ゲート１８から流入された溶融樹脂２０は、成形金型１０のキャビティ１６内を回り込むこととなる（図２参照）。   The cavity 16 is in communication with a gate 18 serving as an inlet for the molten resin 20 injected from a nozzle (both not shown) of the injection molding machine. Further, as is apparent from FIG. 1, the cavity 16 has a substantially 0 shape in plan view. Therefore, as in the prior art, the molten resin 20 introduced from the gate 18 goes around the cavity 16 of the molding die 10 (see FIG. 2).

また、成形金型１０のキャビティ１６の内面（上型１４の内面）には、後述するように樹脂成形品１を作ったとき、基材３０のウエルドライン３４の近傍における意匠面３２に二次元的に複数のシボ４０が形成されるように複数の凹凸１６ａが形成されている（図３参照）。この凹凸１６ａは、所望する形状のシボ４０が形成されるように大きさを成している。   Further, on the inner surface of the cavity 16 of the molding die 10 (the inner surface of the upper mold 14), when the resin molded product 1 is made as described later, the design surface 32 in the vicinity of the weld line 34 of the substrate 30 is two-dimensionally formed. A plurality of irregularities 16a are formed so that a plurality of embossments 40 are formed (see FIG. 3). The unevenness 16a is sized so that the texture 40 having a desired shape is formed.

ここで、所望する形状のシボ４０を説明すると、このシボ４０は、側面視において、基材３０の意匠面３２から突出するように台形を成している（図６参照）。この台形は、下辺４２と、上辺４４と、これら下辺４２の一端と上辺４４の一端および下辺４２の他端と上辺４４の他端とを繋ぐ２つの斜辺４６、４８とから構成されている。これら下辺４２と斜辺４６、４８との内角θは、例えば、５０°となっている。成形金型１０は、このように構成されている。   Here, the texture 40 having a desired shape will be described. The texture 40 has a trapezoidal shape so as to protrude from the design surface 32 of the substrate 30 in a side view (see FIG. 6). The trapezoid is composed of a lower side 42, an upper side 44, and two oblique sides 46 and 48 that connect one end of the lower side 42, one end of the upper side 44, and the other end of the lower side 42 and the other end of the upper side 44. An internal angle θ between the lower side 42 and the oblique sides 46 and 48 is, for example, 50 °. The molding die 10 is configured in this way.

次に、上述した成形金型１０によって樹脂成形品１を作る製造工程を説明する。まず、下型１２と上型１４とを型締めして、この型締めに伴い形成されるキャビティ１６に溶融樹脂２０を射出する第１の工程を行う（図２〜３参照）。次に、この第１の工程が完了すると、射出した溶融樹脂２０を充填する第２の工程を行う（図４〜５参照）。なお、既に説明したように、キャビティ１６は、平面視において、略０字状となっている。   Next, a manufacturing process for making the resin molded product 1 using the molding die 10 described above will be described. First, the lower mold 12 and the upper mold 14 are clamped, and a first step of injecting the molten resin 20 into the cavity 16 formed by the mold clamping is performed (see FIGS. 2 to 3). Next, when the first step is completed, a second step of filling the injected molten resin 20 is performed (see FIGS. 4 to 5). As already described, the cavity 16 has a substantially zero shape in plan view.

そのため、この第１の工程が完了すると、溶融樹脂２０には、ゲート１８の反対側において、キャビティ１６内に射出した溶融樹脂２０の回り込みによって生じる合流部位２４（溶融樹脂２０の合流部位２４）が形成されることとなる。したがって、成形後の基材３０には、従来技術と同様に、この合流部位２４の跡（ウエルドライン３４）が形成されることとなる。   Therefore, when this first step is completed, the molten resin 20 has a joining portion 24 (a joining portion 24 of the molten resin 20) generated by the wraparound of the molten resin 20 injected into the cavity 16 on the opposite side of the gate 18. Will be formed. Therefore, a mark (weld line 34) of the merged portion 24 is formed on the base material 30 after molding, as in the prior art.

このようにウエルドライン３４が形成されると、従来技術と同様に、このウエルドライン３４の近傍において、アルミフレーク２２の配向が異なることとなる。すなわち、アルミフレーク２２は、成形金型１０のキャビティ１６面に対して対向する部位では略横向きに配向されることとなり、溶融樹脂２０の合流部位２４では略縦向きに配向されることとなる。   When the weld line 34 is formed in this way, the orientation of the aluminum flakes 22 is different in the vicinity of the weld line 34 as in the prior art. That is, the aluminum flakes 22 are oriented substantially horizontally at a portion facing the cavity 16 surface of the molding die 10, and are oriented substantially vertically at the joining portion 24 of the molten resin 20.

次に、この第２の工程が完了すると、充填した溶融樹脂２０を冷却固化させる第３の工程を行う。これにより、所望する形状の基材３０が出来上がる。最後に、この第３の工程が完了すると、下型１２と上型１４とを型開きして、出来上がった基材３０を取り出す第４の工程を行う。これにより、基材３０から成る樹脂成形品１が作られる。   Next, when the second step is completed, a third step of cooling and solidifying the filled molten resin 20 is performed. Thereby, the base material 30 having a desired shape is completed. Finally, when this third step is completed, a fourth step is performed in which the lower die 12 and the upper die 14 are opened and the completed base material 30 is taken out. Thereby, the resin molded product 1 which consists of the base material 30 is made.

このように作られた樹脂成形品１において、基材３０のウエルドライン３４の近傍における意匠面３２には複数のシボ４０が二次元的に形成されている。このシボ４０は、既に説明したように、側面視において、基材３０の意匠面３２から突出するように台形を成している。この台形は、下辺４２と、上辺４４と、これら下辺４２の一端と上辺４４の一端および下辺４２の他端と上辺４４の他端とを繋ぐ２つの斜辺４６、４８とから構成されている。これら下辺４２と斜辺４６、４８との内角θは、例えば、５０°となっている。   In the resin molded product 1 made in this way, a plurality of embossments 40 are two-dimensionally formed on the design surface 32 in the vicinity of the weld line 34 of the substrate 30. As described above, the texture 40 has a trapezoidal shape so as to protrude from the design surface 32 of the substrate 30 in a side view. The trapezoid is composed of a lower side 42, an upper side 44, and two oblique sides 46 and 48 that connect one end of the lower side 42, one end of the upper side 44, and the other end of the lower side 42 and the other end of the upper side 44. An internal angle θ between the lower side 42 and the oblique sides 46 and 48 is, for example, 50 °.

このように複数のシボ４０が形成されていると、図６に示すように、樹脂成形品１を正面視したとき、アルミフレーク２２の反射による明暗の差を認識できる。図６において、明と認識できる範囲をＡと記し、暗と認識できる範囲をＢと記している。このとき、図６からも明らかなように、ウエルドライン３４は、複数のシボ４０が形成されている範囲Ｃの中に形成されている。   When the plurality of textures 40 are formed in this way, as shown in FIG. 6, when the resin molded product 1 is viewed from the front, the difference in brightness due to the reflection of the aluminum flakes 22 can be recognized. In FIG. 6, a range that can be recognized as bright is denoted as A, and a range that can be recognized as dark is denoted as B. At this time, as is clear from FIG. 6, the weld line 34 is formed in a range C in which a plurality of embossments 40 are formed.

また、図７に示すように、樹脂成形品１を斜面視したときも、樹脂成形品１を正面視したときと同様に、アルミフレーク２２の反射による明暗の差を認識できる。図７において、明と認識できる範囲をＡと記し、暗と認識できる範囲をＢと記している。このときも、図７からも明らかなように、ウエルドライン３４は、複数のシボ４０が形成されている範囲Ｃの中に形成されている。   Further, as shown in FIG. 7, when the resin molded product 1 is viewed from the inclined surface, the difference in brightness due to the reflection of the aluminum flakes 22 can be recognized as when the resin molded product 1 is viewed from the front. In FIG. 7, the range that can be recognized as bright is indicated as A, and the range that can be recognized as dark is indicated as B. Also at this time, as is apparent from FIG. 7, the weld line 34 is formed in a range C in which a plurality of embossments 40 are formed.

本発明の実施例に係る樹脂成形品１は、上述したように構成されている。この構成によれば、樹脂成形品１において、基材３０のウエルドライン３４の近傍における意匠面３２には複数のシボ４０が二次元的に形成されている。そのため、この樹脂成形品１を正面視や斜面視したとき、この複数のシボ４０によって生じるアルミフレーク２２の反射による明暗の差を認識できる。このとき、図５からも明らかなように、ウエルドライン３４は、この複数のシボ４０が形成されている範囲Ｃに形成されている。そのため、従来技術と同様に、ウエルドライン３４の近傍において、アルミフレーク２２の配向が異なってしまうことにより、このアルミフレーク２２の反射の度合いが変わってしまい、成形後の基材３０のメタリック感に明暗の差を有する部位Ｄが生じてしまっても、このメタリック感に明暗の差を有する部位Ｄが複数のシボ４０が形成されている範囲Ｃに含まれることとなる。したがって、このメタリック感に明暗の差を有する部位Ｄをシボ４０によって生じるアルミフレーク２２の反射による明暗の差に含ませることができる。このように含ませることができると、このメタリック感に明暗の差を有する部位Ｄが紛れるため、このメタリック感に明暗の差を有する部位Ｄを気付かせ難くできる。結果として、樹脂成形品１の外観不良を目立たなくさせることができる。   The resin molded product 1 according to the embodiment of the present invention is configured as described above. According to this configuration, in the resin molded product 1, the plurality of textures 40 are two-dimensionally formed on the design surface 32 in the vicinity of the weld line 34 of the base material 30. Therefore, when the resin molded product 1 is viewed from the front or the slope, the difference in brightness due to the reflection of the aluminum flakes 22 caused by the plurality of textures 40 can be recognized. At this time, as is apparent from FIG. 5, the weld line 34 is formed in a range C in which the plurality of textures 40 are formed. Therefore, as in the prior art, the orientation of the aluminum flakes 22 is different in the vicinity of the weld line 34, thereby changing the degree of reflection of the aluminum flakes 22, resulting in a metallic feeling of the base material 30 after molding. Even if the part D having the difference in brightness is generated, the part D having the difference in brightness in the metallic feeling is included in the range C in which the plurality of embossments 40 are formed. Therefore, the portion D having a difference in brightness and darkness in the metallic feeling can be included in the difference in brightness due to the reflection of the aluminum flakes 22 caused by the texture 40. If it can be included in this manner, the part D having a difference in brightness and darkness is lost in the metallic feeling, and therefore it is difficult to notice the part D having a difference in brightness and darkness in the metallic feeling. As a result, the appearance defect of the resin molded product 1 can be made inconspicuous.

また、この構成によれば、シボ４０は、側面視において、基材３０の意匠面３２から突出するように台形を成している。この台形は、下辺４２と、上辺４４と、これら下辺４２の一端と上辺４４の一端および下辺４２の他端と上辺４４の他端とを繋ぐ２つの斜辺４６、４８とから構成されている。これら下辺４２と斜辺４６、４８との内角θは、例えば、５０°となっている。そのため、例えば、図８に示すように、シボ４０の意匠性も良く、ウエルドライン３４の外観も良く、ゲート１８付近の外観も良くできる。なお、この内角θは、この図８からも明らかなように、５０°に限定されるものでなく、４０°〜６０°の範囲の中であれば、シボ４０の意匠性も良く、ウエルドライン３４の外観も良く、ゲート１８付近の外観も良くできるため、何°であっても構わない。   Further, according to this configuration, the texture 40 has a trapezoidal shape so as to protrude from the design surface 32 of the substrate 30 in a side view. The trapezoid is composed of a lower side 42, an upper side 44, and two oblique sides 46 and 48 that connect one end of the lower side 42, one end of the upper side 44, and the other end of the lower side 42 and the other end of the upper side 44. An internal angle θ between the lower side 42 and the oblique sides 46 and 48 is, for example, 50 °. Therefore, for example, as shown in FIG. 8, the design of the texture 40 is good, the appearance of the weld line 34 is good, and the appearance near the gate 18 can be improved. As is apparent from FIG. 8, the inner angle θ is not limited to 50 °. If the inner angle θ is in the range of 40 ° to 60 °, the design of the texture 40 is good and the weld line is good. Since the appearance of 34 is good and the appearance in the vicinity of the gate 18 can be improved, any angle may be used.

上述した内容は、あくまでも本発明の一実施の形態に関するものであって、本発明が上記内容に限定されることを意味するものではない。   The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.

実施例では、下辺４２と斜辺４６、４８との内角θは、例えば、５０°となっている形態を説明した。また、好ましくは、この内角θは、例えば、４０°〜６０°となっている形態を説明した。しかし、これに限定されるものでなく、シボ４０の意匠性、ウエルドライン３４の外観、ゲート１８付近の外観を気にしなければ、０°〜９０°であっても構わない。   In the embodiment, the embodiment has been described in which the internal angle θ between the lower side 42 and the oblique sides 46 and 48 is 50 °, for example. Moreover, preferably, the inner angle θ has been described as being, for example, 40 ° to 60 °. However, the present invention is not limited to this, and may be 0 ° to 90 ° as long as the design of the texture 40, the appearance of the weld line 34, and the appearance in the vicinity of the gate 18 are not taken into consideration.

１ 樹脂成形品
１６ キャビティ
２０ 溶融樹脂
２２ アルミフレーク
２４ 合流部位
３０ 基材
３２ 意匠面
３４ ウエルドライン
４０ シボ
４２ 下辺
４４ 上辺
４６ 斜辺
４８ 斜辺
θ 内角

DESCRIPTION OF SYMBOLS 1 Resin molded product 16 Cavity 20 Molten resin 22 Aluminum flake 24 Merge part 30 Base material 32 Design surface 34 Weld line 40 Wrinkle 42 Lower side 44 Upper side 46 Oblique side 48 Oblique side θ Inner angle

Claims (2)

アルミフレークが練り込まれた溶融樹脂から成形された基材から成る樹脂成形品であって、
基材の意匠面には、キャビティ内における溶融樹脂の回り込みによって生じる合流部位によるウエルドラインが形成されており、
ウエルドラインの近傍における意匠面には、複数のシボが形成されている樹脂成形品。 A resin molded product comprising a base material molded from a molten resin kneaded with aluminum flakes,
On the design surface of the base material, a weld line is formed by a merging site generated by the wraparound of the molten resin in the cavity.
A resin molded product in which a plurality of textures are formed on the design surface in the vicinity of the weld line. 請求項１に記載の樹脂成形品であって、
シボは、側面視において、基材の意匠面から突出する台形を成しており、
台形は、下辺と、上辺と、これら下辺の一端と上辺の一端および下辺の他端と上辺の他端とを繋ぐ２つの斜辺と、から構成されており、
下辺と斜辺との内角は、４０°〜６０°となっている樹脂成形品。

The resin molded product according to claim 1,
The grain has a trapezoidal shape protruding from the design surface of the base material in a side view,
The trapezoid is composed of a lower side, an upper side, two hypotenuses connecting one end of these lower sides, one end of the upper side, the other end of the lower side, and the other end of the upper side,
A resin molded product in which the inner angle between the lower side and the hypotenuse is 40 ° to 60 °.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018142847A1 (en) * 2017-01-31 2018-08-09 本田技研工業株式会社 Resin molded article
JP2021008083A (en) * 2019-07-02 2021-01-28 株式会社東海理化電機製作所 Decorative article, method for manufacturing decorative article, and mold

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JPH07118561A (en) * 1993-10-25 1995-05-09 Shingo Hishida Colorant for plastic and colored molding
JPH11192637A (en) * 1997-12-26 1999-07-21 Toyoda Gosei Co Ltd Resin molded article and its molding
JP2009220545A (en) * 2008-03-19 2009-10-01 Suzuki Motor Corp Metallic tone resin molded product, its manufacturing method, and mold

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07118561A (en) * 1993-10-25 1995-05-09 Shingo Hishida Colorant for plastic and colored molding
JPH11192637A (en) * 1997-12-26 1999-07-21 Toyoda Gosei Co Ltd Resin molded article and its molding
JP2009220545A (en) * 2008-03-19 2009-10-01 Suzuki Motor Corp Metallic tone resin molded product, its manufacturing method, and mold

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018142847A1 (en) * 2017-01-31 2018-08-09 本田技研工業株式会社 Resin molded article
JPWO2018142847A1 (en) * 2017-01-31 2019-08-08 本田技研工業株式会社 Plastic molded product
JP2021008083A (en) * 2019-07-02 2021-01-28 株式会社東海理化電機製作所 Decorative article, method for manufacturing decorative article, and mold

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