JPS58224732A - Manufacture of synthetic resin product having striped pattern - Google Patents
Manufacture of synthetic resin product having striped patternInfo
- Publication number
- JPS58224732A JPS58224732A JP11008382A JP11008382A JPS58224732A JP S58224732 A JPS58224732 A JP S58224732A JP 11008382 A JP11008382 A JP 11008382A JP 11008382 A JP11008382 A JP 11008382A JP S58224732 A JPS58224732 A JP S58224732A
- Authority
- JP
- Japan
- Prior art keywords
- torpedo
- screw
- nozzle
- mold
- outer periphery
- 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
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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/581—Devices for influencing the material flow, e.g. "torpedo constructions" or mixing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1634—Making multilayered or multicoloured articles with a non-uniform dispersion of the moulding material in the article, e.g. resulting in a marble effect
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、縞模様を有する合成樹脂製品の製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a synthetic resin product having a striped pattern.
従来、この種の模様を有するボタン等の合成樹脂製品は
、染色性の異なる合成樹脂を混合したものを射出成形し
、成形品を所定の染料で後染めする方法によって製造さ
れているが、この方法における模様の付与は、単に染色
性の異なる樹脂の混合のみに依存しているため、模様の
形状、表われる位置は全く不規則、不均一であって、装
飾的に必ずしも満足されるものではなかった。Conventionally, synthetic resin products such as buttons with this type of pattern have been manufactured by injection molding a mixture of synthetic resins with different dyeability, and then piece-dying the molded product with a specified dye. Since the patterning method relies solely on mixing resins with different dyeing properties, the shape and position of the pattern are completely irregular and non-uniform, and are not necessarily decoratively satisfactory. There wasn't.
そこで本発明者は特殊な成形金型を使用して、均一な縞
模様を合成樹脂製のボタンに付与する方法を開発した（
特公昭４７−９３８７ ）。しかし、この方法では金型
製造に費用がかかり、用途に限度があった。Therefore, the present inventor developed a method of applying a uniform striped pattern to synthetic resin buttons using a special mold (
Special Publication No. 47-9387). However, with this method, mold manufacturing is expensive and its applications are limited.
本発明は、このような欠点を解消し、通常の成形用金型
を利用して、容易に妙味ある均一な縞模様を有する合成
樹脂製品を製造する方法を提供する。The present invention solves these drawbacks and provides a method for easily manufacturing synthetic resin products having an attractive uniform striped pattern using a common mold.
本発明の方法は、染色性の異なる二種以上の合成樹脂を
、混合溶融し、混合溶融物を、軸方向に伸びた１以上の
溝を外周に有するトーピードの外周に沿って、トーピー
ドの先に位置するノズルに向けて送り、該ノズルから成
形用型に混合溶融物を射出成形することを特徴とする。The method of the present invention involves mixing and melting two or more synthetic resins with different dyeability, and applying the mixed melt to the tip of the torpedo along the outer periphery of the torpedo, which has one or more grooves extending in the axial direction on the outer periphery. The mixed melt is sent toward a nozzle located at , and the mixed melt is injection-molded from the nozzle into a mold.
本考案では、混合溶融された状態で、染色性の異なる複
数の合成樹脂が、トーピードの外周を経てノズルに送ら
れるため、トーピードの溝に入った樹脂は規則正しく方
向性をもって型に射出され、成形品にはトーピードの溝
の数及び位置等に応じて縞模様が現われる。トーピード
の溝以外の外周を通った樹脂は、波状のランダムな模様
を呈する。In this invention, multiple synthetic resins with different dyeability are sent in a mixed and molten state to the nozzle through the outer periphery of the torpedo, so the resin that has entered the grooves of the torpedo is injected into the mold in a regular and directional manner and molded. Striped patterns appear on the product depending on the number and position of the grooves on the torpedo. The resin that passes through the outer circumference of the torpedo other than the grooves exhibits a wavy, random pattern.
本発明で使用する射出成形機は特に限られないが、二種
以上の合成樹脂を賜−に混合溶融するための混合手段と
加熱手段、及び混合溶融物をノズルを通して射出するた
めの射出すなわち移送手段を有し、更にノズルと混合手
段の間に特定の１・−ピードが配置される口とが必要で
ある。The injection molding machine used in the present invention is not particularly limited, but includes a mixing means and a heating means for mixing and melting two or more synthetic resins, and an injection or transfer means for injecting the mixed melt through a nozzle. It is necessary to have means and also a port in which a particular 1-pead is arranged between the nozzle and the mixing means.
特に、スクリュタイプの射出成形機を使用するのが好ま
しく、スクリュとノズルの間にトーピードを配置するこ
とによって、樹脂は効率よく混合、溶融され、美しい縞
模様に成形される。In particular, it is preferable to use a screw type injection molding machine, and by arranging a torpedo between the screw and the nozzle, the resin is mixed and melted efficiently and molded into a beautiful striped pattern.
スクリュとトーピードの長さの割合は約３対１〜１５対
１程度でよく、特に約２対ｌであるのが好ましい。The ratio of the lengths of the screw to the torpedo may be about 3:1 to 15:1, and preferably about 2:1.
次に、本発明の詳細な説明するが、この例では第１図の
成形機を使用する。Next, the present invention will be explained in detail, using the molding machine shown in FIG. 1 in this example.
成形機（１）は通常のスクリュタイプ射出成形機を改造
したものであって、スクリュ（２）の先約Ｖを切欠き、
その代りに外周に４本の溝（３）を有するトーピード（
４）を配置したものである。The molding machine (1) is a modified ordinary screw type injection molding machine, and the tip of the screw (2) is notched.
Instead, a torpedo (
4) is arranged.
ホッパー（５）から導入された染色性の異なる二種の樹
脂（６）は加熱シリンダ内のスクリュ（２）で均一に混
合溶融され、トーピード（４）に向けて運ばれる。混合
溶融された樹脂（６）は、トーピード（４）の外周を通
ってノズル（７）から金型に射出成形される。Two types of resins (6) having different dyeability introduced from a hopper (5) are uniformly mixed and melted by a screw (2) in a heating cylinder, and then transported toward a torpedo (4). The mixed and molten resin (6) passes around the outer periphery of the torpedo (4) and is injection molded into a mold from a nozzle (7).
金型としては、通常の射出成形に使用されるものがいず
れも使用できる。As the mold, any mold used in normal injection molding can be used.
この方法で、染色性の異なる無色の樹脂（６）を二種用
いてボタンを成形し、後染めしたものは、染色された樹
脂と染色されない樹脂が混合した流動模様を有するボタ
ンとなるが、このボタンにはトーピード（４）の溝（３
）に対応する４本の鮮明な縞模様が中心から４方に伸び
て形成された。With this method, buttons are molded using two types of colorless resins (6) with different dyeability, and the piece dyed becomes a button with a fluid pattern that is a mixture of dyed resin and undyed resin. This button has a torpedo (4) groove (3
) Four clear striped patterns were formed extending in four directions from the center.
この縞模様は、通常の金型で再現性よく形成できるもの
であり、本発明の方法では、単にトーピード（４）の溝
（３）の数や位置に変化を加え、後染めの染料を選ぶだ
けて、多種多様の縞模様を成形品に付与できる。This striped pattern can be formed with good reproducibility using a normal mold, and in the method of the present invention, the number and position of the grooves (3) of the torpedo (4) are simply changed, and the dye for piece dyeing is selected. A wide variety of striped patterns can be applied to molded products.
従って、本発明の方法は装飾性に富んだ少量多品種の製
品の製造が望まれるボタン等の装身具の成形に特に適す
るものである。Therefore, the method of the present invention is particularly suitable for molding accessories such as buttons, for which it is desired to manufacture a wide variety of decorative products in small quantities.
図１ｎ１は本発明の一例にふ・いて使用する成形機の構
造を示す断面図である。
ｉｌｌ −−−一成形機
＋２１−−−−スクリュ
＋３１−−−一溝
＋４１−−−−１−−ピード
１５１−、−−−ホッパー
１６１−−−一樹脂
＋７１−−−−ノズル
特許出願人 永井合成樹脂工業株式会社代 理
人 新 実 健 部を外１名）FIG. 1n1 is a sectional view showing the structure of a molding machine used in an example of the present invention. ill --- one molding machine + 21 --- screw + 31 --- one groove + 41 --- 1 --- peed 151 --- hopper 161 --- one resin + 71 --- nozzle patent applicant Representative of Nagai Synthetic Resin Industry Co., Ltd.
(1 person excluding Ken Shinmi)
Claims (3)
し、混合溶融物を、軸方向に伸びた１以上の溝を外周に
有するトーピードの外周に沿って、トーピードの先に位
置するノズルに向けて送り、該ノズルから成形用型に混
合溶融物を射出成形することを特徴とする縞模様を有す
る自戒樹脂製品の製造方法。(1) Two or more synthetic resins with different dyeability are mixed and melted, and the mixed melt is placed at the tip of the torpedo along the outer periphery of the torpedo, which has one or more grooves extending in the axial direction on the outer periphery. 1. A method for producing a resin product having a striped pattern, which comprises feeding the mixed melt to a nozzle and injection molding the mixed melt from the nozzle into a mold.
クリュタイプの射出成形機を利用することを特徴とする
特許請求の範囲第１項記載の方法。(2) The method according to claim 1, characterized in that a screw-type injection molding machine in which a torpedo is arranged between the screw and the nozzle is used.
あることを特徴とする特許請求の範囲第２項に記載の方
法。(3) The method according to claim 2, wherein the ratio of the lengths of the screw to the length of the torpedo is approximately 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11008382A JPS58224732A (en) | 1982-06-25 | 1982-06-25 | Manufacture of synthetic resin product having striped pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11008382A JPS58224732A (en) | 1982-06-25 | 1982-06-25 | Manufacture of synthetic resin product having striped pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58224732A true JPS58224732A (en) | 1983-12-27 |
Family
ID=14526595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11008382A Pending JPS58224732A (en) | 1982-06-25 | 1982-06-25 | Manufacture of synthetic resin product having striped pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58224732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990010529A1 (en) * | 1989-03-06 | 1990-09-20 | Hoechst (Uk) Limited Polymer Division | Injection moulding of marbled parts |
-
1982
- 1982-06-25 JP JP11008382A patent/JPS58224732A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990010529A1 (en) * | 1989-03-06 | 1990-09-20 | Hoechst (Uk) Limited Polymer Division | Injection moulding of marbled parts |
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