JPH03136816A - Vulcanization and preparation of fender made of rubber - Google Patents
Vulcanization and preparation of fender made of rubberInfo
- Publication number
- JPH03136816A JPH03136816A JP25094890A JP25094890A JPH03136816A JP H03136816 A JPH03136816 A JP H03136816A JP 25094890 A JP25094890 A JP 25094890A JP 25094890 A JP25094890 A JP 25094890A JP H03136816 A JPH03136816 A JP H03136816A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- mold
- gap
- reinforcing iron
- iron plate
- 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.)
- Granted
Links
- 238000004073 vulcanization Methods 0.000 title claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 60
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 31
- 229910052742 iron Inorganic materials 0.000 claims abstract description 30
- 238000003780 insertion Methods 0.000 claims abstract description 21
- 230000037431 insertion Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はゴム製防舷材の加硫、製造方法に関するもので
あり、更に詳しくはゴム製防舷材の構成部材として用い
られる補強用鉄板の固定機能を向上せしめるためのゴム
製防舷材の加硫、製造方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for vulcanizing and manufacturing a rubber fender, and more specifically to a reinforcing iron plate used as a constituent member of a rubber fender. The present invention relates to a method for vulcanizing and manufacturing rubber fenders to improve their fixing function.
公知のゴム製防舷材の製造方法を高さ５００鶴程度の比
較的小型の、第１Ｏ図に示す如き、Ｖ字状横断面を有す
る防舷材を一例として説明すると以下の如くである。先
ず第１図に示す如く、未加硫ゴム（Ｒ）”で逆Ｖ字形横
断面を有するゴム製防舷材の本体部分（１）を押出機の
ダイプレー） （Ｄ）により押出成形し、また第２図に
示す如く、短冊状の補強鉄板（３）の外周面全面にシー
ト状の未加硫ゴム（Ｒ）を貼着してなる取付部材（２）
を予備成形する０次いで第２図、および、第３図に示す
如く、該取付部材（２）のボルト挿通孔（４）部分の表
面側の未加硫ゴム（Ｒ）を剥ぎ取り、その後に第４図に
示す如く、孔型（５）を嵌め込む、なお、ボルト挿通孔
（４）の裏面側の未加硫ゴムは剥ぎ取らず、孔型の軸部
で突き破ぶればよい、最後に第５図に示す如く、前記本
体部分（１）を金型の外型（ＯＭ）内に嵌め込み、次い
で上記取付部材（２）を前記本体部分（１）の両脚端部
に、ボルト挿通孔（４）の成形部分を本体部分（１）か
ら突出させ、かつ、剥ぎ取り部分を外型（ＯＭ）側にし
て、密着状態に載置する。この状態で金型の中型（Ｉ
Ｍ）を嵌装し、全体をプレス加硫する。A known method for manufacturing a rubber fender will be described below, taking as an example a relatively small fender of about 500 cranes in height and having a V-shaped cross section as shown in FIG. 1O. First, as shown in Fig. 1, the main body part (1) of a rubber fender material having an inverted V-shaped cross section is extruded from unvulcanized rubber (R) using an extruder (die play) (D). As shown in Fig. 2, a mounting member (2) is made by pasting a sheet of unvulcanized rubber (R) on the entire outer peripheral surface of a rectangular reinforcing iron plate (3).
Next, as shown in FIGS. 2 and 3, the unvulcanized rubber (R) on the surface side of the bolt insertion hole (4) of the mounting member (2) is peeled off, and then As shown in Figure 4, insert the hole (5) into the bolt insertion hole (4).Do not peel off the unvulcanized rubber on the back side of the bolt insertion hole (4). As shown in FIG. 5, the main body part (1) is fitted into the outer mold (OM) of a mold, and then the mounting members (2) are attached to both leg ends of the main body part (1) through bolt insertion holes. The molded part (4) is made to protrude from the main body part (1) and placed in close contact with the peeled part facing the outer mold (OM). In this state, the middle part of the mold (I
M) is fitted and the whole is press vulcanized.
以上の手順により、Ｖ字状横断面を有する防舷材が加硫
成形されるが、上記防舷材の製造工程には下記の如き問
題点が見受けられる。即ち、上記加硫工程中に未加硫ゴ
ム（Ｒ）は加熱加圧により流動して所定の形状に仕上が
るが、特に取付部材（２）のボルト挿通孔（４）に於い
ては、未加硫ゴム（Ｒ）の流動に伴い孔型（５）、また
は、補強鉄板（３）が屡々所定位置から移動する。この
ため、前記ボルト挿通孔（４）の周面に被着されるべき
ゴムの厚みに不同が生じ、極端な場合には補強鉄板（３
）が部分的に露出する場合もある。According to the above procedure, a fender having a V-shaped cross section is vulcanized and molded, but the following problems are found in the manufacturing process of the fender. That is, during the above-mentioned vulcanization process, the unvulcanized rubber (R) flows by heating and pressurizing and is finished in a predetermined shape. As the sulfur rubber (R) flows, the hole mold (5) or the reinforcing iron plate (3) often moves from its predetermined position. For this reason, the thickness of the rubber to be applied to the circumferential surface of the bolt insertion hole (4) varies, and in extreme cases, the reinforcing iron plate (3)
) may be partially exposed.
このように成形完了時に補強鉄板（３）の一部分が露出
している場合には、シール材を補填する等の適当な方法
により、該露出部を補修するが、ゴムの厚みが不均一で
ある場合は外観的には発見できないので、使用中に取付
用ボルトとの摺擦によりゴムが剥ぎ取られ、その結果、
露出した補強鉄板（３）から錆が発生し、且つ、該補強
鉄板（３）を被覆しているゴムに眉間剥離を生せしめる
。この補強鉄板（３）に発生した錆は、更に取付用ボル
トの亜鉛メツキ層の溶出を促進し、該取付用ボルトの錆
発生を助長する。If a part of the reinforcing iron plate (3) is exposed when the molding is completed, the exposed part is repaired by an appropriate method such as adding sealant, but the thickness of the rubber is uneven. If this is the case, it cannot be detected externally, but the rubber may be peeled off due to friction with the mounting bolt during use, and as a result,
Rust occurs on the exposed reinforcing iron plate (3), and the rubber covering the reinforcing iron plate (3) causes peeling between the eyebrows. The rust generated on the reinforcing iron plate (3) further promotes the elution of the galvanized layer of the mounting bolt, and promotes the occurrence of rust on the mounting bolt.
本発明の主要な目的は、在来のゴム製防舷材の製造方法
に認められた前記の如く欠点を改良し、加硫時のゴムの
流動により、補強鉄板、あるいは、孔型の位置が移動さ
せられることがない加硫、製造方法を提供することにあ
る。The main purpose of the present invention is to improve the above-mentioned drawbacks observed in the conventional manufacturing method of rubber fender materials, and to improve the position of reinforcing iron plates or holes by the flow of rubber during vulcanization. The object is to provide a vulcanization and manufacturing method that does not require movement.
本発明の他の主要な目的は、補強鉄板、あるいは、孔型
が移動しても相対的位置関係を一定に維持し得る加硫・
製造方法を提供することにある。Another main object of the present invention is to use a vulcanized steel plate that can maintain a constant relative position even when the reinforcing steel plate or hole mold moves.
The purpose is to provide a manufacturing method.
本発明は、外型（ＯＭ）内に充填した未加硫ゴム（Ｒ）
からなる本体部分（１）の両脚端部に、補強鉄板（３）
を未加硫ゴム（Ｒ）で被覆し、かつ、ボルト挿通孔（４
）に、軸部（５″）と座板部（５”）とからなる孔型（
５）を挿入した取付部材（２）を載置し、外型（ＯＭ）
に中型（！Ｖ）を被嵌して金型内で全体をプレス・加硫
するものにおいて、上記孔型（５）の軸部（５゛）の外
周面に、該軸部（５°）と平行に延び、周方向に略均等
な距離を置いて形成され、かつ、先端部（６゛）が補強
鉄板（３）の厚みの中間位置まで延びる複数の間隙保持
用突条（６）を形成して、ボルト挿入孔（４）と軸部（
５′）との間に全周均等な間隙を形成すると共に、座板
部（５”）と補強鉄板（３）との間に隙間を形成し、プ
レス・加硫により、上記間隙に未加硫ゴム（Ｒ）を流し
込んで、補強鉄板（３）の全面を均等な厚みのゴムで被
覆するようになしたことを要旨とするものである。The present invention is based on unvulcanized rubber (R) filled in an outer mold (OM).
A reinforcing iron plate (3) is attached to both leg ends of the main body part (1) consisting of
is covered with unvulcanized rubber (R), and bolt insertion holes (4
), there is a hole type (
Place the mounting member (2) into which 5) has been inserted, and
In the case where a medium mold (!V) is fitted onto the mold and the entire body is pressed and vulcanized in the mold, the shaft portion (5°) is placed on the outer peripheral surface of the shaft portion (5゛) of the hole mold (5). A plurality of gap-maintaining protrusions (6) extending parallel to each other, spaced apart from each other at approximately equal distances in the circumferential direction, and having a tip end (6゛) extending to an intermediate position in the thickness of the reinforcing iron plate (3). The bolt insertion hole (4) and the shaft part (
5'), and a gap between the seat plate (5") and the reinforcing iron plate (3). The gist is that sulfur rubber (R) is poured so that the entire surface of the reinforcing iron plate (3) is coated with rubber of uniform thickness.
本体部分、ならびに、取付部材を金型内に充填したとき
、孔型の軸部と補強鉄板のボルト挿通孔との間に全周に
わたって均等な間隙が形成され、同時に、補強鉄板と孔
型の座板部との間にも間隙が形成され、プレス加硫時、
上記間隙にゴムが流れ込み、補強鉄板の全面、特にボル
ト挿通孔の周壁面をも均一な厚みのゴムで被覆する。When the main body part and the mounting member are filled into the mold, an even gap is formed around the entire circumference between the shaft of the hole mold and the bolt insertion hole of the reinforcing iron plate, and at the same time, a gap between the reinforcing iron plate and the hole mold is formed. A gap is also formed between the seat plate and the plate during press vulcanization.
The rubber flows into the gap, and the entire surface of the reinforcing iron plate, especially the peripheral wall surface of the bolt insertion hole, is coated with rubber of a uniform thickness.
第６図は本発明に用いる孔型の平面図、第７図はその側
面図を示し、第８図は取付部材（２）に対する孔型（５
）の嵌装状態を説明する一部破断拡大図である。また第
９図は間隙保持用突条（６）の横断面形状を例示する部
分拡大図である。第６図、および第７図に見られる如く
、孔型（５）は、ボルト挿通孔（４）と相位形で、かつ
、小径の軸部（５°）と、剥ぎ取り部に嵌合する座板部
（５°）とからなっており、軸部（５゛）の外周面には
複数、好ましくは、３乃至４条の間隙保持用突条（６）
が形成されている。各間隙保持用突条（６）は、軸部（
５°）の軸線と平行して延び、且つ、軸部（５゛）の周
方向へ略均等な間隙（Ｓ）を置いて配設されている。FIG. 6 is a plan view of the hole mold used in the present invention, FIG. 7 is a side view thereof, and FIG. 8 is a hole mold (5) for the mounting member (2).
) is a partially cutaway enlarged view illustrating the fitted state. Moreover, FIG. 9 is a partially enlarged view illustrating the cross-sectional shape of the gap-maintaining protrusion (6). As seen in Figures 6 and 7, the hole (5) is in phase with the bolt insertion hole (4) and fits into the small diameter shaft (5°) and the stripped portion. It consists of a seat plate (5°), and a plurality of, preferably 3 to 4, gap-maintaining protrusions (6) on the outer peripheral surface of the shaft (5°).
is formed. Each gap-maintaining protrusion (6) has a shaft portion (
5°), and are arranged with substantially equal gaps (S) in the circumferential direction of the shaft portion (5°).
本発明の好ましい実施態様に於いては、各突条（６）は
軸部（５°）を取付部材（２）のボルト挿通孔（４）に
挿入し、かつ、外型（ＯＭ）と中型（ＩＭ）間にセット
したとき、第８図に示す如く、各突条（６）の先端部（
６゛）が補強鉄板（３）の厚み内に位置する長さに形成
する。In a preferred embodiment of the present invention, each protrusion (6) has a shaft portion (5°) inserted into a bolt insertion hole (4) of the mounting member (2), and has an outer mold (OM) and a middle mold. (IM), the tip of each protrusion (6) (
6゛) is formed to a length within the thickness of the reinforcing iron plate (3).
斯かる構造を有する孔型（５）の軸部（５′）を補強鉄
板（３）のボルト挿通孔（４）に挿し込み、第４図に示
す如く、座板部（５“）を取付部材（２）の表層をなす
未加硫ゴム（Ｒ）の剥ぎ取り部内に嵌め込み、この後、
常法に従って、外型（ＯＭ）に充填した本体部分（１）
の両脚端部に、上記孔型（５）を取付けた取付部材（２
）を取付け、中型（ＩＭ）の嵌装、ならびに、加硫成形
の諸工程を経てゴム製防舷材を製造する。なお、外型（
ＯＭ）に充填する本体部分（１）は、押出機による予備
成形品の外、シート状の未加硫ゴムを積層充填してもよ
い、上記加硫成形工程に於いて、間隙保持用突条（６）
は孔型（５）の軸部（５°）の軸線方向に沿って、所定
の長さ、即ち、間隙保持用突条（６）の先端部（６°）
が補強鉄板（３）の厚みの途中に位置するように形成さ
れているから、未加硫ゴム（Ｒ）がボルト挿通孔（４）
の内壁面と該ボルト挿通孔（４）内に嵌装された軸部（
５°）の突条形成面との間に流れ込む際、実質的に前記
突条（６）が形成されておらない部分からの未加硫ゴム
（Ｒ）の流入が促進され、各突条（６）により未加硫ゴ
ム（Ｒ）の流動阻害現象が回避される。また孔型（５）
を組付けた補強部材（２）を、本体部分（１）と共に、
金型（ＯＭ）（ＩＭ）内に、組込むと、第８図に示す如
く、孔型（５）の座板部（５”）と補強鉄板（３）との
間に隙間が形成される。加硫成形時、この隙間にも未加
硫ゴムが流れ込み、第１１図に示す如く、補強鉄板（３
）の全ての面に均一なゴム被膜を形成することができる
。Insert the shaft part (5') of the hole mold (5) having such a structure into the bolt insertion hole (4) of the reinforcing steel plate (3), and attach the seat plate part (5'') as shown in Fig. 4. It is inserted into the peeled-off part of the unvulcanized rubber (R) that forms the surface layer of the member (2), and then,
Main body part (1) filled in the outer mold (OM) according to the usual method
Attachment members (2) with the hole molds (5) attached to both leg ends of the
) is attached, intermediate-sized (IM) fitting, and vulcanization molding are performed to manufacture rubber fenders. In addition, the outer mold (
The main body part (1) to be filled in the OM) may be filled with a sheet of unvulcanized rubber in addition to a preformed product produced by an extruder. (6)
is a predetermined length along the axial direction of the shaft (5°) of the hole mold (5), that is, the tip (6°) of the gap-maintaining protrusion (6).
Since it is formed so that it is located in the middle of the thickness of the reinforcing iron plate (3), the unvulcanized rubber (R) is formed in the bolt insertion hole (4).
The inner wall surface of the shaft (4) fitted into the bolt insertion hole (4)
5°), the unvulcanized rubber (R) is substantially promoted to flow from the portion where the protrusions (6) are not formed, and the unvulcanized rubber (R) flows into each protrusion (6). 6) avoids the flow inhibition phenomenon of unvulcanized rubber (R). Also hole type (5)
The reinforcing member (2) assembled with the main body part (1),
When assembled into the mold (OM) (IM), a gap is formed between the seat plate (5'') of the hole mold (5) and the reinforcing iron plate (3), as shown in FIG. During vulcanization molding, unvulcanized rubber flows into this gap, and as shown in Figure 11, the reinforcing iron plate (3
) can form a uniform rubber coating on all surfaces.
尚、前記間隙保持用突条（６）によって完成した防舷材
のボルト挿通孔（４）の壁面に形成される溝条部分には
、金型から該防舷材を取り出した後、図示しない適当な
シール材を補填して最終製品に仕上げる。Note that, after the fender is removed from the mold, a groove (not shown) is formed in the wall surface of the bolt insertion hole (4) of the completed fender by the gap-maintaining protrusion (6). Add appropriate sealing material to complete the final product.
以上の説明から理解し得る如く、本発明に係る加硫、製
造方法を採用することによって、加硫時のゴムの流動に
よる補強鉄板、あるいは、孔型の移動を確実に防止する
ことができる。従って、補強鉄板の露出に起因する該補
強鉄板、ならびに、取付用ボルトの発錆、あるいは、ゴ
ム成形層の剥離等の欠陥の発生を未然に回避することが
できる、斯くして本発明は、ゴム製防舷材の耐用年数の
増加、ならびに、製品の品質向上に顕著な改善をもたら
すことができる。As can be understood from the above description, by employing the vulcanization and manufacturing method according to the present invention, movement of the reinforcing iron plate or the hole pattern due to the flow of rubber during vulcanization can be reliably prevented. Therefore, the occurrence of defects such as rusting of the reinforcing iron plate and mounting bolts or peeling of the rubber molding layer due to exposure of the reinforcing iron plate can be avoided. Significant improvements can be made in increasing the service life of rubber fenders as well as improving product quality.
第１図はゴム製防舷材の本体部分の押出成形工程の説明
図、第２図は取付部材の一部破断斜視図、第３図は第２
図Ａ−Ａ線での断面図、第４図は取付部材に対する孔型
の嵌装状態を説明する斜視図、第５図は従来の加硫工程
を説明する金型および防舷材の一部破断正面図である。
第６図乃至第９図は本発明の説明図であって、第６図は
孔型の平面図、第７図はその側面図である。第８図は取
付部材に対する孔型の嵌装状態を説明する一部破断拡大
図である。また第９図は間隙保持用突条の横断面形状を
例示する部分拡大図である。なお、第１０図は防舷材の
斜視図で、端面ば断面を示し、第１１図は、本発明に係
る第１０図Ｃ−Ｃ線の断面図を示す。
（ＯＭ）・−・外型、
（Ｒ）−・−未加硫ゴム、
（２）・−取付部材、
（４） −・ボルト挿通孔、
（５° ）−・軸部、
（６） −間隙保持用突条、
（Ｓ ） −突条間の距離。Figure 1 is an explanatory diagram of the extrusion molding process for the main body of the rubber fender, Figure 2 is a partially cutaway perspective view of the mounting member, and Figure 3 is the
A sectional view taken along the line A-A in Figure 4, a perspective view illustrating how the hole mold is fitted into the mounting member, and Figure 5 a part of the mold and fender illustrating the conventional vulcanization process. FIG. 6 to 9 are explanatory diagrams of the present invention, in which FIG. 6 is a plan view of the hole mold, and FIG. 7 is a side view thereof. FIG. 8 is a partially cutaway enlarged view illustrating how the hole is fitted into the mounting member. Moreover, FIG. 9 is a partially enlarged view illustrating the cross-sectional shape of the gap-maintaining protrusion. Note that FIG. 10 is a perspective view of the fender, showing a cross section of the end face, and FIG. 11 is a sectional view taken along the line CC in FIG. 10 according to the present invention. (OM) - Outer mold, (R) - Unvulcanized rubber, (2) - Mounting member, (4) - Bolt insertion hole, (5°) - Shaft, (6) - Gaps-maintaining protrusions, (S) - distance between protrusions.
Claims (1)
両脚端部に、補強鉄板を未加硫ゴムで被覆し、かつ、ボ
ルト挿通孔に、軸部と座板部とからなる孔型を挿入した
取付部材を載置し、外型に中型を被嵌して金型内で全体
をプレス・加硫するものにおいて、上記孔型の軸部の外
周面に、該軸部と平行に延び、周方向に略均等な距離を
置いて形成され、かつ、先端部が補強鉄板の厚みの中間
位置まで延びる複数の間隙保持用突条を形成して、ボル
ト挿入孔と軸部との間に全周均等な間隙を形成すると共
に、座板部と補強鉄板との間に隙間を形成し、プレス・
加硫により、上記間隙に未加硫ゴムを流し込んで、補強
鉄板の全面を均等な厚みのゴムで被覆するようになした
ことを特徴とするゴム製防舷材の加硫、製造方法。(1) Both leg ends of the main body made of unvulcanized rubber filled in the outer mold are covered with reinforcing iron plates with unvulcanized rubber, and the bolt insertion holes are made of a shaft part and a seat plate part. In a device in which a mounting member into which a hole mold is inserted is placed, a middle mold is fitted onto the outer mold, and the entire body is pressed and vulcanized in the mold, the outer peripheral surface of the shaft portion of the hole mold is A plurality of gap-maintaining protrusions are formed that extend parallel to each other, are spaced at approximately equal distances in the circumferential direction, and have their tips extended to an intermediate position in the thickness of the reinforcing steel plate to connect the bolt insertion hole and the shaft. At the same time, a gap is formed between the seat plate and the reinforcing iron plate, and a press
A method for vulcanizing and manufacturing a rubber fender, characterized in that unvulcanized rubber is poured into the gap by vulcanization so that the entire surface of the reinforcing iron plate is covered with rubber of uniform thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25094890A JPH03136816A (en) | 1990-09-19 | 1990-09-19 | Vulcanization and preparation of fender made of rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25094890A JPH03136816A (en) | 1990-09-19 | 1990-09-19 | Vulcanization and preparation of fender made of rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03136816A true JPH03136816A (en) | 1991-06-11 |
| JPH049644B2 JPH049644B2 (en) | 1992-02-20 |
Family
ID=17215390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25094890A Granted JPH03136816A (en) | 1990-09-19 | 1990-09-19 | Vulcanization and preparation of fender made of rubber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03136816A (en) |
-
1990
- 1990-09-19 JP JP25094890A patent/JPH03136816A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH049644B2 (en) | 1992-02-20 |
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