JP3203834B2 - Resin molding - Google Patents
Resin moldingInfo
- Publication number
- JP3203834B2 JP3203834B2 JP31617092A JP31617092A JP3203834B2 JP 3203834 B2 JP3203834 B2 JP 3203834B2 JP 31617092 A JP31617092 A JP 31617092A JP 31617092 A JP31617092 A JP 31617092A JP 3203834 B2 JP3203834 B2 JP 3203834B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- hollow
- hollow rod
- tip
- pressurized gas
- 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
- 239000011347 resin Substances 0.000 title claims description 55
- 229920005989 resin Polymers 0.000 title claims description 55
- 238000000465 moulding Methods 0.000 title claims description 11
- 239000007789 gas Substances 0.000 description 17
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 239000013585 weight reducing agent 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C2045/1727—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles using short shots of moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は，意匠面の外観性に優れ
た樹脂成形品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin molded article having excellent design appearance.
【０００２】[0002]
【従来技術】自動車においては，その前面に図４に示す
ごときラジエータグリルを配置している。このラジエー
タグリルは，エンジンの冷却水を冷却するためのラジエ
ータの前方に置かれるものであるが，自動車前面におけ
る意匠性向上に重要な役割を果たしている。2. Description of the Related Art In a motor vehicle, a radiator grill as shown in FIG. The radiator grill is placed in front of the radiator for cooling the engine cooling water, and plays an important role in improving the design of the front of the vehicle.
【０００３】そして，近年においては，図４に示すごと
く，ラジエータグリル９の下部フレーム９３の前面に，
意匠性向上のために意匠模様９８を付すことがある。こ
の意匠模様９８としては，花模様等の模様の他，文字，
記号等を意匠模様風に施すこともある。なお，図４にお
いて，９１は側部フレーム，９２は格子部である。とこ
ろで，上記ラジエータグリル９は，近年，軽量化等の目
的のため，樹脂成形品が用いられている。また，このラ
ジエータグリル９は，軟化させた樹脂の射出成形により
作製されている。In recent years, as shown in FIG. 4, on the front surface of the lower frame 93 of the radiator grill 9,
In some cases, a design pattern 98 is attached to improve the design. As the design pattern 98, in addition to patterns such as flower patterns, characters,
Symbols and the like are sometimes applied in a design pattern style. In FIG. 4, reference numeral 91 denotes a side frame, and 92 denotes a lattice. Incidentally, in recent years, a resin molded product has been used as the radiator grill 9 for the purpose of weight reduction or the like. The radiator grill 9 is manufactured by injection molding of a softened resin.
【０００４】そして，上記作製時には，意匠模様９８
を，成形型のキャビティに設けた意匠模様（図示略）か
ら，精度良く転写させるため，上記樹脂の注入後に上記
下部フレーム９３の背後に加圧ガスを注入する方法が提
案されている。この加圧ガスの注入により，軟化状態で
キャビティ内に射出されていた樹脂は，その背後より押
圧され，精度良く上記意匠模様が転写される。At the time of the above-mentioned fabrication, the design pattern 98
A method has been proposed in which pressurized gas is injected behind the lower frame 93 after the injection of the resin in order to transfer the resin accurately from a design pattern (not shown) provided in the cavity of the molding die. By the injection of the pressurized gas, the resin that has been injected into the cavity in a softened state is pressed from behind, and the design pattern is transferred with high precision.
【０００５】そして，上記下部フレーム９３における上
記加圧ガスの注入部分には，図５，図６に示すごとく，
中空状の中空棒状部８が形成される。なお，上記樹脂及
び加圧ガスは，図５に示すゲート８１より順次注入され
る。上記の方法は，中空成形法を利用したものである。[0005] As shown in FIGS. 5 and 6, the pressurized gas injection portion of the lower frame 93 is provided in the lower frame 93.
A hollow rod-like portion 8 is formed. The resin and the pressurized gas are sequentially injected from the gate 81 shown in FIG. The above method utilizes a hollow molding method.
【０００６】[0006]
【解決しようとする課題】しかしながら，上記従来のラ
ジエータグリル９においては，図６に示すごとく，中空
棒状部８において，その中空先端部８５が途中で止まっ
てしまい，それよりも前方には中空部８０が形成されな
いことがある。However, in the conventional radiator grill 9 described above, as shown in FIG. 6, the hollow tip portion 85 of the hollow rod portion 8 stops halfway, and the hollow portion is located further forward than the hollow tip portion 85. 80 may not be formed.
【０００７】このような場合，下部フレーム９３の前面
は，中空部８０がある部分においては，加圧ガスによっ
て押圧されるため，意匠模様が精度良く転写される。し
かし，中空部８０が形成されない，中空先端部８５より
も先方の下流部分では，樹脂を介しての押圧しかないた
め，意匠模様の転写が不充分となる。そのため，下部フ
レームの外観性が劣る。In such a case, the front surface of the lower frame 93 is pressed by the pressurized gas in the portion where the hollow portion 80 is located, so that the design pattern is transferred with high accuracy. However, in the downstream portion where the hollow portion 80 is not formed and is located downstream of the hollow tip portion 85, there is only pressing through the resin, so that the transfer of the design pattern becomes insufficient. Therefore, the appearance of the lower frame is inferior.
【０００８】一方，上記中空部８０の中空先端部８５
を，下部フレーム９３の側端近くまで行き渡らせるため
には，樹脂のショートショット時に上記下流側に多量の
樹脂が入らないように，樹脂量をコントロールする必要
がある。即ち，成形時においては，上記中空棒状部８に
樹脂を射出し，その後この樹脂内に加圧ガスを注入する
場合，上記樹脂の射出量をコントロールしている。On the other hand, the hollow tip portion 85 of the hollow portion 80
In order to spread the resin near the side edges of the lower frame 93, it is necessary to control the amount of resin so that a large amount of resin does not enter the downstream side during a short shot of the resin. That is, at the time of molding, when a resin is injected into the hollow rod-shaped portion 8 and then a pressurized gas is injected into the resin, the injection amount of the resin is controlled.
【０００９】しかし，このショートショットは，中空棒
状部における樹脂の射出充填状態を見ながら行う訳では
ない。そのため，中空棒状部内の温度，形状等の樹脂流
れの条件によって，結果的に中空棒状部内に過剰の樹脂
が入ってしまう。それ故，中空先端部８５が下部フレー
ム９３の側面近くまで届かなくなる自体を生ずることが
ある。However, this short shot is not performed while observing the injection filling state of the resin in the hollow rod portion. For this reason, depending on the resin flow conditions such as the temperature and the shape in the hollow rod portion, as a result, excessive resin enters the hollow rod portion. Therefore, the hollow leading end 85 may not reach the vicinity of the side surface of the lower frame 93 itself.
【００１０】それ故，ショートショット時における樹脂
量のコントロールが困難である。本発明はかかる従来の
問題点に鑑み，加圧ガスを中空棒状部の先端近くまで到
達させることができ，外観性に優れ，かつショートショ
ット時における樹脂量のコントロールも容易な樹脂成形
品を提供しようとするものである。[0010] Therefore, it is difficult to control the amount of resin during a short shot. The present invention has been made in view of the conventional problems, and provides a resin molded product that can make a pressurized gas reach near the tip of a hollow rod-shaped portion, has excellent appearance, and can easily control the amount of resin during a short shot. What you want to do.
【００１１】[0011]
【課題の解決手段】本発明は，表面に意匠模様を形成し
た中空棒状部を有する樹脂成形品において，上記中空棒
状部は成形時の樹脂流れ方向に沿って先端へ向かうに従
って細径となる先細形状であることを特徴とする樹脂成
形品にある。According to the present invention, a design pattern is formed on a surface.
In the resin molded article having a hollow rod-shaped part, the hollow rod-shaped part has a tapered shape that becomes smaller in diameter toward a tip thereof in a resin flow direction during molding.
【００１２】本発明において，中空棒状部は，前記のご
とく，意匠模様を転写させる表面の部分の背面に設け
る。意匠模様は，前記した模様，文字，記号のみなら
ず，キャビティ表面の鏡面など，平坦面もある。換言す
れば，中空棒状部は，中空部を形成して，該中空部内の
加圧ガスによって樹脂成形品の前面をキャビティに密着
させる部分に設ける。In the present invention, as described above, the hollow rod-shaped portion is provided on the back surface of the portion where the design pattern is transferred. The design pattern has not only the above-mentioned patterns, characters, and symbols but also a flat surface such as a mirror surface of the cavity surface. In other words, the hollow rod-shaped portion forms a hollow portion and is provided at a portion where the front surface of the resin molded product is brought into close contact with the cavity by the pressurized gas in the hollow portion.
【００１３】本発明において重要なことは，上記中空棒
状部が，成形時の樹脂流れの方向に沿って，先端へ向か
うに従って，その径が小さくなる先細形状であることで
ある。この先細形状は，ゲート近くにおける中空棒状部
の直径（中空部及び肉厚部の合計）に対して，先端の中
空棒状部の直径が２０〜８０％の範囲にあるよう構成す
ることが好ましい。What is important in the present invention is that the hollow rod portion has a tapered shape in which the diameter decreases along the direction of resin flow during molding toward the tip. This tapered shape is preferably configured such that the diameter of the hollow rod portion at the tip is in the range of 20 to 80% of the diameter of the hollow rod portion near the gate (the sum of the hollow portion and the thick portion).
【００１４】２０％未満では，先端部の中空部の容積が
小さくなり，キャビティ面へ樹脂を押圧する圧力が不充
分となり，樹脂成形品の外観性が劣るおそれがある。一
方，８０％を越えると，前記従来のごとく，中空先端部
が途中で止まってしまうおそれがある。If it is less than 20%, the volume of the hollow portion at the tip becomes small, the pressure for pressing the resin against the cavity surface becomes insufficient, and the appearance of the resin molded product may be deteriorated. On the other hand, if it exceeds 80%, there is a possibility that the hollow tip portion may stop halfway as in the conventional case.
【００１５】また，上記樹脂としては，アクリロニトリ
ル−ブタジエン−スチレン（ＡＢＳ）樹脂，ポリプロピ
レン（ＰＰ）樹脂，ポリカーボネート（ＰＣ）樹脂，ア
クリロニトリル−エチレン−プロピレン−ジエンラバー
スチレン（ＡＥＳ）樹脂などがある。また，加圧ガスと
しては，窒素ガス，空気等がある。本発明は，ラジエー
タグリルのみならず，各種自動車部品，インテリア部品
など，種々の樹脂成形品に利用することができる。Examples of the resin include acrylonitrile-butadiene-styrene (ABS) resin, polypropylene (PP) resin, polycarbonate (PC) resin, and acrylonitrile-ethylene-propylene-diene rubber styrene (AES) resin. The pressurized gas includes nitrogen gas, air and the like. INDUSTRIAL APPLICABILITY The present invention can be applied to not only a radiator grill but also various resin molded products such as various automobile parts and interior parts.
【００１６】[0016]
【作用及び効果】本発明の樹脂成形品においては，中空
棒状部を前記のごとく先細形状としている。そのため，
成形時において，樹脂中に注入する加圧ガスが中空棒状
部の先端近くまで達することができ，樹脂をその背面よ
り，加圧ガスの圧力によりキャビティに対して強く押圧
することができる。そのため，キャビティの意匠模様等
が樹脂成形品に精度良く転写される。それ故，樹脂成形
品の外観性が向上する。In the resin molded article of the present invention, the hollow rod portion is tapered as described above. for that reason,
At the time of molding, the pressurized gas injected into the resin can reach near the tip of the hollow rod portion, and the resin can be strongly pressed against the cavity from the back surface by the pressure of the pressurized gas. Therefore, the design pattern of the cavity is accurately transferred to the resin molded product. Therefore, the appearance of the resin molded product is improved.
【００１７】上記のごとく，加圧ガスが中空棒状部の先
端近くまで達する理由は，次のように考えられる。即
ち，中空部形成までのプロセスを説明すると，まず最初
に成形型のキャビティ内に軟化した溶融樹脂が射出さ
れ，それと同時にキャビティ壁に接触した樹脂は外側か
ら冷却硬化する。これにより，スキン層が形成される。As described above, the reason why the pressurized gas reaches the vicinity of the tip of the hollow rod portion is considered as follows. That is, the process up to the formation of the hollow portion will be described. First, the softened molten resin is injected into the cavity of the mold, and at the same time, the resin in contact with the cavity wall is cooled and hardened from the outside. As a result, a skin layer is formed.
【００１８】その後，加圧ガスが，未だ軟化状態にある
溶融樹脂中に注入されると，軟化状態にある樹脂は前方
へ押されて中空部が形成される。このとき，上記樹脂に
よるスキン層の形成スピードは，中空部の形状に余り影
響されない。Thereafter, when the pressurized gas is injected into the molten resin still in a softened state, the softened resin is pushed forward to form a hollow portion. At this time, the formation speed of the skin layer by the resin is not significantly affected by the shape of the hollow portion.
【００１９】そして，中空部が一定断面である場合より
も，先細形状である場合の方が，中空部の断面が占める
割合は小さくなる。また，中空部の体積は充填する樹脂
量に依存し，同一キャビティ容量の場合には，ほぼ同じ
体積しか中空とならない。そのため，先細形状の方が中
空部の長さを大きくすることができる。したがって，本
発明によれば，加圧ガスを中空棒状部の先端近くまで到
達させることができ，外観性に優れ，かつショートショ
ット時における樹脂量のコントロールが容易な樹脂成形
品を提供することができる。The proportion of the cross section of the hollow portion is smaller when the hollow portion has a tapered shape than when the hollow portion has a constant cross section. Further, the volume of the hollow portion depends on the amount of the resin to be filled, and in the case of the same cavity volume, only approximately the same volume becomes hollow. Therefore, the tapered shape can increase the length of the hollow portion. Therefore, according to the present invention, it is possible to provide a resin molded product that can make the pressurized gas reach near the tip of the hollow rod-shaped portion, has excellent appearance, and can easily control the amount of resin during a short shot. it can.
【００２０】[0020]
【実施例】本発明の実施例にかかる樹脂成形品につき，
図１〜図３を用いて説明する。本例の樹脂成形品は，自
動車用のラジエータグリルである。本例のラジエータグ
リル９０は，図１，図２に示すごとく，下部フレーム９
３の背面に中空棒状部１を有し，該中空棒状部１は樹脂
の流れ方向に沿って，先細形状を有している。中空棒状
部１の内部には，同様に先細形状を有する中空部１１が
形成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS A resin molded product according to an embodiment of the present invention will be described.
This will be described with reference to FIGS. The resin molded product of this example is a radiator grill for an automobile. As shown in FIGS. 1 and 2, the radiator grill 90 of the present embodiment
3 has a hollow rod-shaped portion 1 on its back surface, and the hollow rod-shaped portion 1 has a tapered shape along the flow direction of the resin. A hollow portion 11 having a tapered shape is also formed inside the hollow rod portion 1.
【００２１】中空棒状部１の基部１２の近くには，樹脂
及び加圧ガスを順次射出，注入するためのゲート８１が
設けてある。また，中空棒状部１の中空先端部１３は，
下部フレーム９３の他端近くまで到達している。上記の
中空棒状部１の先細形状は，図３に示すごとく，成形型
３における中空棒状部成形部３０の断面形状を変えるこ
とにより，成形することができる。A gate 81 for sequentially injecting and injecting resin and pressurized gas is provided near the base 12 of the hollow rod-shaped portion 1. The hollow tip 13 of the hollow rod 1 is
It has reached near the other end of the lower frame 93. The tapered shape of the hollow rod-shaped portion 1 can be formed by changing the cross-sectional shape of the hollow rod-shaped portion forming portion 30 in the mold 3 as shown in FIG.
【００２２】即ち，図３に示すごとく，中空棒状部成形
部３０においては，ラジエータグリルの下部フレーム９
３の前面を形成するための前型面３１と，中空棒状部１
の背面を形成する後型面３２１〜３２３とを有する。前
型面３１には，意匠模様３６が形成してある。That is, as shown in FIG. 3, the lower frame 9 of the radiator grille
3, a front mold surface 31 for forming the front surface of
And the rear mold surfaces 321 to 323 forming the back surface of the rear mold. A design pattern 36 is formed on the front mold surface 31.
【００２３】そして，図３Ａ〜Ｃに示すごとく，前型面
３１の形状は，成形型のどの部分でも同じである。これ
は，ラジエータグリルの下部フレーム９３の前面形状が
同じであるためである。一方，後型面は，中空棒状部１
が先細形状を有するため，中空棒状部１の基部１２（図
１）の近くでは，図３Ａのごとく，後型面３２１は大き
い。そして中空先端部１３に近づくに従って，図３Ｂ，
Ｃに示すごとく後型面３２２，３２３が順に小さくなっ
ている。As shown in FIGS. 3A to 3C, the shape of the front mold surface 31 is the same in any part of the mold. This is because the front shape of the lower frame 93 of the radiator grill is the same. On the other hand, the rear mold surface is
Has a tapered shape, the rear mold surface 321 is large near the base 12 (FIG. 1) of the hollow rod-shaped portion 1 as shown in FIG. 3A. 3B, as it approaches the hollow tip 13.
As shown in C, the rear mold surfaces 322 and 323 are sequentially reduced.
【００２４】また，図３に示すごとく，基部における中
空棒状部の直径Ｄ１に対して，中空先端部における中空
棒状部の直径Ｄ３は，約３０％に形成してある。また，
本例においては，中空棒状部１が上記のごとく，先細形
状に形成してある。そのため，成形時において樹脂中に
注入する加圧ガスが先端近くまで到達することができ，
樹脂をその背面より，加圧ガスの圧力により，キャビテ
ィに対して強く押圧することができる。As shown in FIG. 3, the diameter D3 of the hollow rod portion at the hollow tip portion is formed to be about 30% of the diameter D1 of the hollow rod portion at the base portion. Also,
In the present embodiment, the hollow rod-like portion 1 is formed in a tapered shape as described above. Therefore, the pressurized gas injected into the resin during molding can reach near the tip,
The resin can be strongly pressed against the cavity from the back by the pressure of the pressurized gas.
【００２５】そのため，キャビティの意匠模様３６がラ
ジエータグリルの下部フレーム９３の表面に精度良く転
写される。それ故，ラジエータグリルの外観性が向上す
る。また，先細形状としたため，中空部の断面積の比率
は下がったが，中空部は長く形成された。Therefore, the design pattern 36 of the cavity is accurately transferred to the surface of the lower frame 93 of the radiator grill. Therefore, the appearance of the radiator grill is improved. In addition, the tapered shape reduced the cross-sectional area ratio of the hollow portion, but formed the hollow portion longer.
【００２６】また，比較のため，図３に示した中空棒状
部成形部３０の形状を全て同じとなした成形型を用い，
ラジエータグリルの成形を行った。上記中空棒状部成形
部３０の形状は，全て基部の形状（図３Ａ）と同じとし
た。その結果，中空棒状部における中空先端部は，中空
棒状部長さの約７０％位までしか達しなかった。また，
そのため，下部フレーム９３の表面に転写された意匠模
様３６の模様は，上記中空先端部よりも下流側において
は，不鮮明であった。このことからも，本発明の方法
は，優れていることが分かる。For comparison, a molding die having the same shape of the hollow rod-shaped molding portion 30 shown in FIG. 3 was used.
The radiator grill was molded. The shape of the hollow rod-shaped portion forming portion 30 was all the same as the shape of the base portion (FIG. 3A). As a result, the hollow tip portion of the hollow rod portion reached only about 70% of the length of the hollow rod portion. Also,
Therefore, the pattern of the design pattern 36 transferred to the surface of the lower frame 93 was unclear downstream of the hollow tip. This also indicates that the method of the present invention is excellent.
【図１】実施例におけるラジエータグリルの背面図。FIG. 1 is a rear view of a radiator grill in an embodiment.
【図２】実施例のラジエータグリルにおける，中空棒状
部付近の一部切欠斜視図。FIG. 2 is a partially cutaway perspective view of the vicinity of a hollow rod portion in the radiator grill of the embodiment.
【図３】実施例の成形型における中空棒状部成形部の説
明図。FIG. 3 is an explanatory view of a hollow rod-shaped part forming part in the forming die of the embodiment.
【図４】従来のラジエータグリルの正面図。FIG. 4 is a front view of a conventional radiator grill.
【図５】従来のラジエータグリルの一部切欠背面図。FIG. 5 is a partially cutaway rear view of a conventional radiator grill.
【図６】従来のラジエータグリルにおける中空棒状部付
近の一部切欠斜視図。FIG. 6 is a partially cutaway perspective view showing the vicinity of a hollow rod portion in a conventional radiator grill.
１．．．中空棒状部， １１．．．中空部， １２．．．基部， １３．．．中空先端部， ３．．．成形型， ３０．．．中空棒状部成形部， ３６．．．意匠模様， ９０．．．ラジエータグリル， ９３．．．下部フレーム， 1. . . Hollow rod portion, 11. . . Hollow part, 12. . . Base, 13. . . 2. hollow tip, . . Mold, 30. . . 36. hollow rod-shaped part forming part, . . Design pattern, 90. . . Radiator grill, 93. . . Lower frame,
Claims (1)
有する樹脂成形品において，上記中空棒状部は成形時の
樹脂流れ方向に沿って先端へ向かうに従って細径となる
先細形状であることを特徴とする樹脂成形品。1. A resin molded product having a hollow bar-shaped portion having a design pattern formed on a surface thereof, wherein the hollow bar-shaped portion has a tapered shape having a smaller diameter toward a tip end along a resin flow direction during molding. Characterized resin molded product.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31617092A JP3203834B2 (en) | 1992-10-30 | 1992-10-30 | Resin molding |
| US08/509,895 US5968446A (en) | 1992-10-28 | 1995-08-01 | Molded resin body and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31617092A JP3203834B2 (en) | 1992-10-30 | 1992-10-30 | Resin molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06143320A JPH06143320A (en) | 1994-05-24 |
| JP3203834B2 true JP3203834B2 (en) | 2001-08-27 |
Family
ID=18074072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31617092A Expired - Fee Related JP3203834B2 (en) | 1992-10-28 | 1992-10-30 | Resin molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3203834B2 (en) |
-
1992
- 1992-10-30 JP JP31617092A patent/JP3203834B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06143320A (en) | 1994-05-24 |
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