JPH0286419A - Manufacture of rubber sheet with color pattern - Google Patents
Manufacture of rubber sheet with color patternInfo
- Publication number
- JPH0286419A JPH0286419A JP23759088A JP23759088A JPH0286419A JP H0286419 A JPH0286419 A JP H0286419A JP 23759088 A JP23759088 A JP 23759088A JP 23759088 A JP23759088 A JP 23759088A JP H0286419 A JPH0286419 A JP H0286419A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- color
- injection hole
- mold
- unvulcanized
- 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
- 229920001971 elastomer Polymers 0.000 title claims abstract description 114
- 239000005060 rubber Substances 0.000 title claims abstract description 114
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 238000004073 vulcanization Methods 0.000 claims abstract description 6
- 238000007796 conventional method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 229940090044 injection Drugs 0.000 abstract 3
- 238000001746 injection moulding Methods 0.000 description 8
- 239000003086 colorant Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
-
- 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
- B29K2621/00—Use of unspecified rubbers for preformed parts, e.g. for inserts
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明とシングル若しくは複数ヘッドのゴム用射出成形
機を用いて、割合型により形成された空間部に未加硫の
カラーゴムを先入れ後ベースゴムを射出成形してなるカ
ラー模様入りゴムシートの製造方法。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field Using the present invention and a single or multiple-head rubber injection molding machine, unvulcanized colored rubber is first put into a space formed by a proportioning mold. A method for manufacturing a rubber sheet with a color pattern formed by injection molding a rear base rubber.
（ロ）従来の技術
従来ゴム用射出成形機によりカラー製品を製造するには
、色数に応じた数のヘッドを有する成形機を用いて割合
型の組合せにより形成された空間部内に数種のカラーゴ
ムを順次射出充填した後、常法により加硫成形して完成
品を得ていた。(b) Conventional technology In order to manufacture color products using a conventional rubber injection molding machine, a molding machine having a number of heads corresponding to the number of colors is used to place several kinds of products in a space formed by a combination of proportion molds. After sequentially injection-filling colored rubber, vulcanization molding was performed using a conventional method to obtain a finished product.
従って、色数に応じてヘッドを有していなければならず
、しかも色数に応じた回数だけ射出しなければならない
から、極めて複雑な装置となって操作が面倒であり、色
替えする際には、元の色がでないようにヘッドをきれい
に掃除しなければならないので、材料のロスや手間を要
していた。又、カラー模様はその都度混ざり合って変化
し、一定のカラー模様を形成することはできなかった。Therefore, it is necessary to have a head corresponding to the number of colors, and it is also necessary to eject the number of times according to the number of colors, resulting in an extremely complicated device, which is troublesome to operate, and when changing colors. The head had to be thoroughly cleaned to prevent the original color from disappearing, resulting in material loss and labor. Moreover, the color patterns were mixed and changed each time, and it was not possible to form a constant color pattern.
（ハ）発明が解決しようとする問題点
本発明は同色或いは異色の適数個の未加硫のカラーゴム
を所望量割合型の空間部に予め載置して後、ベースゴム
を射出充填してなるカラー８Ｉ様入リゴムシートの製造
方法であって、ただ単に未加硫のカラーゴムを空間部の
射出孔に対抗する位置に載置するだけで、円周方向に分
散されてなるカラー模様入すゴムシートの製造方法を提
供することを目的とする。(c) Problems to be Solved by the Invention The present invention involves placing an appropriate number of unvulcanized color rubbers of the same color or different colors in a desired amount of space in advance, and then injecting and filling the base rubber. This is a method for producing a rubber sheet with a color 8I pattern, which consists of simply placing unvulcanized color rubber in a position opposite to the injection hole in the space, and forming a color pattern dispersed in the circumferential direction. The purpose of the present invention is to provide a method for manufacturing a rubber sheet.
（ニ）問題点を解決する為の手段
本発明は上下型により形成された空間部に先ず上型の射
出孔に対抗する下型凹部の対抗位置に同色或いは異色の
適数及び世の未加硫のカラーゴムが載置され、次いで射
出孔からベースゴムが射出充填されることによって、該
カラーゴムがベースゴムの流動に伴って円周方向に分散
された後、常法により加硫成形され、しかる後脱型して
なることを特徴とするカラー模様入りゴムシートの製造
方法であり、更に又、上中型の重合面にランナーが形成
され、該ランナーは上型の射出孔と中型のゲートとに連
通され、該ゲートはそれぞれ中型と下型により形成され
た複数の空間部に対抗して設けられており、先ず、中型
のゲートに対抗する下型凹部の対抗位置に少なぐとも１
個の適宜量の未加硫のカラーゴムがｉｌ［ｉ！され、次
いでベースゴムが射出孔及びランナーを通してゲートか
ら射出充填されることによって形成されるカラー模様入
りゴムシートの製造方法である。(D) Means for Solving the Problems The present invention first provides a space formed by an upper mold and a lower mold with an appropriate number of the same color or a different color and an unadded material in the opposite position of the lower mold recess that opposes the injection hole of the upper mold. A sulfur color rubber is placed, and then base rubber is injected and filled from the injection hole, and the color rubber is dispersed in the circumferential direction as the base rubber flows, and then vulcanization molded by a conventional method. A method for producing a rubber sheet with a color pattern, which is characterized in that the rubber sheet is then removed from the mold, and furthermore, a runner is formed on the overlapping surface of the upper middle mold, and the runner is connected to the injection hole of the upper mold and the gate of the middle mold. The gates are provided opposite to a plurality of spaces formed by the middle mold and the lower mold, respectively, and first, at least one of the gates is provided at a position opposite to the lower mold recess opposite to the middle mold gate.
A suitable amount of unvulcanized colored rubber is il [i! This is a method for manufacturing a rubber sheet with a color pattern, in which a base rubber is injected and filled from a gate through an injection hole and a runner.
（ホ）実施例
第１図は本発明の第１実施例を示すものであって、上型
（１）と下型（２）との型組により空間部（３）が形成
された断面図である。(E) Embodiment FIG. 1 shows a first embodiment of the present invention, and is a cross-sectional view in which a space (3) is formed by assembling an upper mold (1) and a lower mold (2). It is.
上型（１）にはゴム用射出成形機の複数ヘッドが矢印に
て示す如く密着され、そのヘッドに合致する射出孔（４
）、（４）が穿設されている。Multiple heads of a rubber injection molding machine are tightly attached to the upper mold (1) as shown by the arrows, and injection holes (4
), (4) are drilled.
下型（２）の上型（１）との合わせ面側には凹部（５）
が形成され、該凹部（５）は該射出孔（４）と相対する
位置に設けられている。There is a recess (5) on the side of the lower mold (2) that meets the upper mold (1).
is formed, and the recess (5) is provided at a position facing the injection hole (4).
下型（２）の凹部（５）には必要に応じて花柄やイラス
ト等凹凸模様の意匠が刻まれている。該凹部（５）の射
出孔（４）に対抗する位置には、未加硫のカラーゴム（
６）を仮止めする為に凹部或いは囲繞された突条等が設
けられる。The concave portion (5) of the lower mold (2) is engraved with a concavo-convex design, such as a floral pattern or an illustration, if necessary. An unvulcanized color rubber (
6) A recess or a surrounding protrusion is provided for temporarily fixing.
カラーゴム（６）及びベースゴム（７）には未加硫の天
然ゴム、合成ゴム、或いはそれらのブレンドゴが用いら
れ、カラーゴム（６）はその未加硫のベース材にａして
各色のカラーゴム（６）が形成される。The color rubber (6) and the base rubber (7) are made of unvulcanized natural rubber, synthetic rubber, or a blend thereof. A colored rubber (6) is formed.
本実施例におけるベースゴム（７）は未加硫のＮＲ，Ｅ
ＰＴ、ＳＢＲのブレンドゴムでベージュ色とし、可塑度
３４．Ｏ〜３６．５、スコーチタイム１０’ＯＯ〜１１
’ ００とした。The base rubber (7) in this example is unvulcanized NR, E
A blend of PT and SBR rubber with a beige color and a plasticity of 34. 0~36.5, Scorch time 10'OO~11
'00.
カラーゴム（６）は未加硫のＮＲとＳＤＲのブレンドゴ
ムでブルー、オレンジ、レッド、ピンク。Color rubber (6) is a blend of unvulcanized NR and SDR rubber in blue, orange, red, and pink.
グリーン等予め色付けされており、試料１では可塑度２
４．０〜３７．０． スコーチタイム４′００〜８′０
０、試料２では可塑度２４．０〜３０．０．スコーチタ
イム９′００〜１２ ’ ００、試料３では可塑度２４
．０以下、スコーチタイム１２’ ００以上である。It is pre-colored such as green, and sample 1 has a plasticity of 2.
4.0-37.0. Scorch time 4'00~8'0
0, and sample 2 has a plasticity of 24.0 to 30.0. Scorch time 9'00-12'00, plasticity 24 for sample 3
．． 0 or less, and the scorch time is 12'00 or more.
第２図（ａ） （ｂ） （ｃ）はそれぞれ試料１，２．
３．によるカラー模様入りゴムシートの平面図である。Figure 2 (a), (b), and (c) are samples 1 and 2, respectively.
3. FIG. 2 is a plan view of a rubber sheet with a color pattern.
本実施例では先ず上型（１）の射出孔（４）に対抗する
下型（２）の対抗位置に試料ｌの未加硫のカラーゴム（
６）の小塊を載置し、上型（１）を型組みしてゴムシー
トに相当する空間部（３）を形成し、型組された上下型
（１） （２）をゴム用射出成形機に装着する。ゴム用
射出成形機のヘッドから加圧加熱された未加硫のベース
ゴム（７）は射出孔（４）を介して空間部（３）内に射
出される。射出孔（４）に対抗する位置に載置されたカ
ラーゴム（６）はベースゴム（７）の流動力によって、
しかもその流動に伴って均等に円周方向に分散されて、
丁度打ち上げ花火のような躍動するカラー模様（８）が
現出される。このカラー模様（８）は、ベースゴム（７
）により意匠面に向かって押圧された状態で流動される
ので意匠面側にはっきりと現出される。ベースゴム（７
）の厚みは、本実施例では２．０ｍ／ｍとしたが、０．
５〜５ｍ／ｍ程度の厚みが良好である。In this example, first, the unvulcanized color rubber of sample 1 (
Place the small lump from 6), assemble the upper mold (1) to form a space (3) corresponding to a rubber sheet, and use the assembled upper and lower molds (1) and (2) for rubber injection. Attach to the molding machine. Unvulcanized base rubber (7) that has been pressurized and heated is injected from the head of the rubber injection molding machine into the space (3) through the injection hole (4). The color rubber (6) placed in a position opposite to the injection hole (4) is caused by the flow force of the base rubber (7).
Moreover, along with the flow, it is evenly distributed in the circumferential direction,
A vibrant color pattern (8) appears just like a fireworks display. This color pattern (8) is based on the base rubber (7
), it flows while being pressed toward the design surface, so it appears clearly on the design surface. Base rubber (7
) was set to 2.0 m/m in this example, but it was set to 0.0 m/m.
A thickness of about 5 to 5 m/m is good.
カラー模様（８）は資料１，２，３．で示す如くスコー
チタイムが遅い程、円周方向に分散されるカラー模様の
幅が広くなり、スコーチタイムを調整することによって
自由に希望するカラー模様を得ることができる。Color pattern (8) is in materials 1, 2, and 3. As shown in , the slower the scorch time, the wider the color pattern dispersed in the circumferential direction becomes, and by adjusting the scorch time, a desired color pattern can be freely obtained.
しかる後、常法により加硫成形され脱型して所望のカラ
ー模様入りゴムシートを得ることができる。Thereafter, the rubber sheet with the desired color pattern can be obtained by vulcanization molding and demolding by a conventional method.
第３図は本発明の第２実施例を示し、未加硫のカラーゴ
ム（６）の位置とカラー模様（８）との関係を説明する
ためのゴムシートの平面図である。FIG. 3 shows a second embodiment of the present invention, and is a plan view of a rubber sheet for explaining the relationship between the position of the unvulcanized colored rubber (6) and the colored pattern (8).
先ず、上型位置の射出孔（４）に対抗する下型（２）の
対抗位置の回りに三等分して例えば未加硫のピンクカラ
ーゴム（イ）、オレンジカラーゴム（Ｕ）、ブルーカラ
ーゴム（ハ）の小塊を＠置し、以後は第１実施例と同様
の方法にて形成することによってピンクカラーゴム（イ
）は円周方向に拡散されたピンクカラー模様（ニ）とし
て現出され、同様にオレンジカラーゴム（ロ）はオレン
ジカラー模様（ネ）に、ブルーカラーゴム（ハ）はブル
ーカラー模様（へ）に対応して現出される。First, divide the lower mold (2) into three equal parts around the injection hole (4) in the upper mold position, for example, unvulcanized pink color rubber (A), orange color rubber (U), and blue rubber. By placing small lumps of colored rubber (c) and forming them in the same manner as in the first embodiment, pink colored rubber (a) is formed into a pink colored pattern (d) diffused in the circumferential direction. Similarly, orange color rubber (b) appears corresponding to the orange color pattern (ne), and blue color rubber (c) appears corresponding to the blue color pattern (f).
上記未加硫のカラーゴム及びベースゴムの可塑度とスコ
ーチタイムは第１実施例の試料３と同様とした。The plasticity and scorch time of the unvulcanized color rubber and base rubber were the same as those of Sample 3 of the first example.
本実施例では通常のゴム射出成形機においてただ単に未
加硫のカラーゴム（６）の色違いの小塊を上型（１）の
射出孔（４）に対抗する下型（２）の対抗位置に等分し
て載置するだけの簡易な操作によって、所望の放射拡散
したカラー模様を有するゴムシートを製造することがで
きる。In this example, in a normal rubber injection molding machine, small pieces of unvulcanized colored rubber (6) of different colors are simply inserted into the injection hole (4) of the upper mold (1), and the lower mold (2) is opposed to the injection hole (4) of the upper mold (1). A rubber sheet having a desired radiation-diffused color pattern can be manufactured by a simple operation of placing the rubber sheet in equal parts.
第４図は本発明の第３実施例を示し、未加硫のカラーゴ
ム（６）の位置とカラー模様（８）との関係を説明する
ためのゴムシートの平面図テある。FIG. 4 shows a third embodiment of the present invention, and is a plan view of a rubber sheet for explaining the relationship between the position of the unvulcanized colored rubber (6) and the colored pattern (8).
先ず上型（１）と射出孔（４）に対抗する下型（２）の
対抗位置に未加硫のオレンジカラーゴム（イ）の小塊を
、ｉ！ｆｆし、このオレンジカラーゴム（イ）を囲繞し
て未加硫のピンクカラーゴム（Ｕ）をリング状に載置し
、以後は第１実施例と同様の方法にて形成することによ
って、オレンジカラーゴム（イ）は円周方向に拡散され
たオレンジカラー模様（ハ）として現出され、ピンクカ
ラーゴム（ロ）の大半はオレンジカラー模様（ハ）の内
側にピンクカラー模様（ニ）として現出される。First, a small lump of unvulcanized orange-colored rubber (A) is placed on the upper mold (1) and the lower mold (2) at a position opposite to the injection hole (4). ff, place unvulcanized pink color rubber (U) in a ring shape surrounding this orange color rubber (A), and then form the orange color rubber in the same manner as in the first embodiment. The colored rubber (A) appears as an orange color pattern (C) that is diffused in the circumferential direction, and most of the pink color rubber (B) appears as a pink color pattern (D) inside the orange color pattern (C). Served.
未加硫のカラーゴム及びベースゴムの可塑度とスコーチ
タイムは実施例１の試料３と同様とした。The plasticity and scorch time of the unvulcanized color rubber and base rubber were the same as in Sample 3 of Example 1.
本実施例では通常のゴム射出成形機において上型（１）
の射出孔（４）に対抗する下型（２）の対抗位置にただ
単に未加硫のオレンジカラーゴム（イ）の小塊とこれを
囲繞するリング状のピンクカラーゴム（ロ）とを組合せ
てｉｃ！置するだけで所望の複数重のカラー模様を現出
したゴムシートを製造することができた。In this example, the upper mold (1) is used in a normal rubber injection molding machine.
Simply combine a small lump of unvulcanized orange color rubber (A) with a ring-shaped pink color rubber (B) surrounding it in a position opposite to the injection hole (4) of the lower mold (2). Teic! It was possible to produce a rubber sheet that displayed a desired multilayered color pattern just by placing the rubber sheet on the sheet.
又、上記リング状のピンクカラーゴム（ロ）を例えば３
等分してそれぞれ異色のカラーゴムにすれば更に美しい
複数重のカラー模様が現出される。In addition, for example, the ring-shaped pink color rubber (B) is
If you divide it into equal parts and make each piece a different colored rubber, an even more beautiful multi-color pattern will appear.
第５図は本発明の第４実施例を示し、上型（１）、中型
（９）、下型（２）の型組みされた断面図、第６図は第
５図における上、中、下型及び射出孔。FIG. 5 shows a fourth embodiment of the present invention, and FIG. Lower mold and injection hole.
ランナー、ゲートの関係を示す模式図である。FIG. 3 is a schematic diagram showing the relationship between runners and gates.
上型（１）の中央には射出孔（４）が穿設され中型（９
）には４個のゲート（１１）がそれぞれ穿設され、上型
（１）、中型（９）の重合面に該射出孔（４）とゲート
（１１）とを連通ずるランナー（ｌＯ）が形成され、中
型（９）と下型（２）とにより形成された４つの空間部
（３）の中央部に上記４個のゲート（１１）は対抗して
いる。An injection hole (4) is bored in the center of the upper mold (1) and the middle mold (9
) are respectively provided with four gates (11), and a runner (lO) communicating the injection hole (4) with the gate (11) is provided on the overlapping surface of the upper mold (1) and the middle mold (9). The four gates (11) are opposed to the center of the four spaces (3) formed by the middle mold (9) and the lower mold (2).
本実施例に用いる未加硫のカラーゴム（６）とベースゴ
ム（７）の可塑度及びスコーチタイムは第１実施例の試
料２と同様とした。先ず、上型（１）のゲー） （１１
）に対抗する下型（２）の対抗位置に予め形成した未加
硫のカラーゴム（６）の同色或いはそれぞれ異色の小塊
をｆｆｉ！置し、しかる後矢印で示す如くゴム射出成形
機のヘッドから加圧加熱されたベースゴム（７）が射出
孔（４）、ランナー（１０）、ゲ−）（１１）を介して
空間部（３）へ射出充填される。The plasticity and scorch time of the unvulcanized color rubber (6) and base rubber (7) used in this example were the same as those of Sample 2 of the first example. First, the upper type (1) game) (11
ffi! Then, as shown by the arrow, the base rubber (7), which has been pressurized and heated from the head of the rubber injection molding machine, passes through the injection hole (4), runner (10), and gate (11) into the space ( 3) is injected and filled.
そうして常法により加硫成形されたあと脱型することに
よって、所望のカラー模様入りゴムシートを得ることが
できる。By vulcanizing and molding by a conventional method and then demolding, a rubber sheet with a desired color pattern can be obtained.
（へ）発明の効果
本発明は割合型の空間部に予め形成された未加硫のカラ
ーゴムを射出孔の対抗位置に載置し、後は未加硫のベー
スゴムを射出充填してなるものであるから、カラーゴム
を所望の模様に合うように予め形成して空間部に固着し
ておくという手間を要することなく、ただ単に射出孔の
対抗位置に載置した未加硫のカラーゴムに直接ベースゴ
ムを射出するだけで円周方向に分散されてなるカラー模
様入りのゴムシートを得ることができる。(F) Effects of the Invention The present invention is made by placing unvulcanized color rubber previously formed in the space of a proportion mold at a position opposite to the injection hole, and then injecting and filling the unvulcanized base rubber. Because it is a material, there is no need to take the trouble of pre-forming color rubber to match the desired pattern and fixing it in the space. By simply injecting the base rubber directly into the rubber sheet, it is possible to obtain a rubber sheet with color patterns dispersed in the circumferential direction.
更に又、カラーゴムのスコーチタイムの長短によって所
望のカラー模様の分１１にの大小を得ることができる。Furthermore, it is possible to obtain a desired color pattern by a factor of 11 depending on the length of the scorch time of the colored rubber.
第１図は本発明の第１実施例の断面図、第２図は第１図
によるカラー模様入りゴムシートの平面図、第３図及び
第４図は本発明の第２及び第３実施例におけるカラー模
様入りゴムシートの平面図、第５図は第４実施例の断面
図、第６図は第５図における模式図である。
■・−・・上型、２・・・・・・・下型、３・・・−空
間部、 ４−・・射出孔。
５・・・−凹部、６・・−カラーゴム、７・・・・・・
ベースゴム、８・カラー模様、９・−・・・中型、 １
０・−ランナー、１１・−・・・・ゲート。
特許出願人 っちゃゴム株式会社FIG. 1 is a sectional view of a first embodiment of the present invention, FIG. 2 is a plan view of a rubber sheet with a color pattern according to FIG. 1, and FIGS. 3 and 4 are second and third embodiments of the present invention. FIG. 5 is a sectional view of the fourth embodiment, and FIG. 6 is a schematic diagram of FIG. 5. ■... Upper mold, 2... Lower mold, 3... Space, 4- Injection hole. 5... - recess, 6... - color rubber, 7...
Base rubber, 8.Color pattern, 9.--Medium size, 1
0.-Runner, 11.--Gate. Patent applicant: Cchagomu Co., Ltd.
Claims (5)
出孔に対抗する下型凹部の対抗位置に少なくとも１個の
適宜量の未加硫カラーゴムが載置され、次いで射出孔か
らベースゴムが射出充填されることによって、該カラー
ゴムがベースゴムの流動に伴って円周方向に分散された
後、常法により加硫成形され、しかる後脱型してなるカ
ラー模様入りゴムシートの製造方法。(1) In the space formed by the upper and lower molds, at least one appropriate amount of unvulcanized color rubber is first placed in the opposite position of the lower mold recess that opposes the injection hole of the upper mold, and then from the injection hole. A colored patterned rubber sheet is formed by injection filling the base rubber and dispersing the color rubber in the circumferential direction as the base rubber flows, followed by vulcanization molding by a conventional method and then demolding. manufacturing method.
たカラーゴムが夫々異色のカラーゴムである請求項１記
載のカラー模様入りゴムシートの製造方法。(2) The method for manufacturing a colored patterned rubber sheet according to claim 1, wherein the colored rubbers placed at opposite positions of the lower mold recess facing the injection holes are respectively different colored rubbers.
たカラーゴムが、射出孔の真下とそれを囲む位置に夫々
分離して載置されたカラーゴムである請求項１又は請求
項２のカラー模様入りゴムシートの製造方法。(3) The color rubber placed in the opposite position of the lower mold recess that opposes the injection hole is the color rubber placed separately directly below the injection hole and in a position surrounding it, respectively. Item 2. Method for producing a rubber sheet with a color pattern.
間部に対抗する射出孔が上型に穿設されていて、同時に
複数個のカラー模様入りゴムシートを得ることができる
請求項１乃至３記載のカラー模様入りゴムシートの製造
方法。(4) Claim 1, wherein the space is a plurality of independent spaces, and injection holes opposing each space are bored in the upper mold, so that a plurality of colored patterned rubber sheets can be obtained at the same time. 3. The method for producing a rubber sheet with a color pattern according to any of the above.
ーは上型の射出孔と中型のゲートとに連通され、該ゲー
トはそれぞれ中型と下型により形成された複数の空間部
に対抗して設けられており、先ず中型のゲートに対抗す
る下型凹部の対抗位置に少なくとも１個の適宜量の未加
硫のカラーゴムが載置され、次いでベースゴムが射出孔
及びランナーを通してゲートから射出充填されることに
よって、該カラーゴムがベースゴムの流動に伴って円周
方向に分散された後、常法により加硫成形され、しかる
後脱型してなるカラー模様入りゴムシートの製造方法。(5) A runner is formed on the overlapping surface of the upper middle mold, the runner communicates with the injection hole of the upper mold and the gate of the middle mold, and the gate opposes the plurality of spaces formed by the middle mold and the lower mold, respectively. First, at least one appropriate amount of unvulcanized color rubber is placed in a position opposite to the middle-sized gate in the lower mold recess, and then the base rubber is injected from the gate through the injection hole and the runner. A method for producing a rubber sheet with a color pattern, which is obtained by filling the color rubber so that it is dispersed in the circumferential direction as the base rubber flows, and then vulcanization molding by a conventional method, followed by demolding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23759088A JPH0286419A (en) | 1988-09-22 | 1988-09-22 | Manufacture of rubber sheet with color pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23759088A JPH0286419A (en) | 1988-09-22 | 1988-09-22 | Manufacture of rubber sheet with color pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286419A true JPH0286419A (en) | 1990-03-27 |
Family
ID=17017575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23759088A Pending JPH0286419A (en) | 1988-09-22 | 1988-09-22 | Manufacture of rubber sheet with color pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100509641B1 (en) * | 2002-05-22 | 2005-08-23 | 쥐강 지셰 구펀 유셴 공쓰 | Method of manufacturing multi-color rubber product |
-
1988
- 1988-09-22 JP JP23759088A patent/JPH0286419A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100509641B1 (en) * | 2002-05-22 | 2005-08-23 | 쥐강 지셰 구펀 유셴 공쓰 | Method of manufacturing multi-color rubber product |
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