JP3026045B2 - Automotive weather strip - Google Patents
Automotive weather stripInfo
- Publication number
- JP3026045B2 JP3026045B2 JP5100496A JP10049693A JP3026045B2 JP 3026045 B2 JP3026045 B2 JP 3026045B2 JP 5100496 A JP5100496 A JP 5100496A JP 10049693 A JP10049693 A JP 10049693A JP 3026045 B2 JP3026045 B2 JP 3026045B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- weight
- weather strip
- rubber composition
- core material
- 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
Landscapes
- Seal Device For Vehicle (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】 本発明は、ゴム製品としての必
要強度を得るためにケイ酸マグネシウム等の白色充填剤
を添加したカラーゴム組成物を用いた自動車用ウエザー
ストリップに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip for automobiles using a color rubber composition to which a white filler such as magnesium silicate is added in order to obtain a necessary strength as a rubber product.
【０００２】[0002]
【従来の技術】 図１を参考にして説明する。従来、自
動車用ウエザーストリップにおいて、芯材１とこれを被
覆するＥＰＤＭゴム組成物であるソリッドゴム層２と、
シール部のスポンジ層３と、装飾用の被膜部４より成る
自動車用ウエザーストリップにおいて、装飾用被膜部４
のカラーゴム組成物にはゴム製品としての必要強度を得
るために、例えば次に示すようにケイ酸マグネシウム等
の白色充填剤を添加している。すなわち、 ＥＰＤＭ １００ 重量部 亜鉛華 ５〜１０ 重量部 ステアリン酸 １〜４ 重量部 加工助剤 ３〜１５ 重量部 ケイ酸マグネシウム ３０〜７０ 重量部 炭酸カルシウム ３０〜７０ 重量部 酸化チタン ５〜３０ 重量部 着色顔料 任意 重量部 粉末硫黄 １．０〜２．０ 重量部 チアゾール系促進剤 １．０〜２．０ 重量部 チウラム系促進剤 １．０〜２．０ 重量部 ジチオカルバメート系促進剤 １．０〜２．０ 重量部 脱水剤 ５．０〜１５．０ 重量部2. Description of the Related Art A description will be given with reference to FIG. Conventionally, in a weather strip for automobiles, a core material 1 and a solid rubber layer 2 which is an EPDM rubber composition covering the core material 1,
In the automotive weather strip comprising the sponge layer 3 of the seal portion and the decorative coating portion 4, the decorative coating portion 4 is provided.
In order to obtain the required strength as a rubber product, a white filler such as magnesium silicate is added to the color rubber composition as described below. That is, EPDM 100 parts by weight Zinc white 5-10 parts by weight Stearic acid 1-4 parts by weight Processing aid 3-15 parts by weight Magnesium silicate 30-70 parts by weight Calcium carbonate 30-70 parts by weight Titanium oxide 5-30 parts by weight Color pigment Optional parts by weight Powdered sulfur 1.0 to 2.0 parts by weight Thiazole accelerator 1.0 to 2.0 parts by weight Thiuram accelerator 1.0 to 2.0 parts by weight Dithiocarbamate accelerator 1.0 -2.0 parts by weight Dehydrating agent 5.0-15.0 parts by weight
【０００３】しかしながら、上記従来の配合は、発泡剤
を添加しなくても、高温無加圧加硫（熱空気加硫・ガラ
スビーズ流動床加硫その他）成形工程で発泡現象が生
じ、そのため製品に付けたシボ模様がぼやけたり、製品
強度が低下し、破れ易くなったりすると言う問題点があ
る。上記発泡現象は、組成物内に含まれるエアや水分を
機械的に脱気（主として押出機に減圧装置を付設して行
う）したり、脱水剤を増量したり等してある程度抑制可
能であるが、それだけでは不十分であって、発泡は避け
得ない。[0003] However, in the conventional compounding method described above, even when a foaming agent is not added, a foaming phenomenon occurs in a high-temperature non-pressurized vulcanization (hot air vulcanization, glass bead fluidized bed vulcanization, etc.) molding process, and as a result, However, there is a problem that the grain pattern attached to the image is blurred, the product strength is reduced, and the product is easily broken. The foaming phenomenon can be suppressed to some extent by mechanically degassing air or moisture contained in the composition (mainly performed by providing an extruder with a decompression device) or increasing the amount of a dehydrating agent. However, this is not enough and foaming cannot be avoided.
【０００４】[0004]
【発明が解決しようとする課題】 解決しようとする課
題は、上記従来のゴム組成物を用いたウエザーストリッ
プは、高温無加圧加硫工程で発泡現象が生じ、そのため
製品に付けたシボ模様がぼやけたり、製品強度が低下
し、破れ易くなったりすることである。The problem to be solved is that a weather strip using the above-mentioned conventional rubber composition causes a foaming phenomenon in a high-temperature non-pressurized vulcanization step, and as a result, a grain pattern attached to a product is reduced. Blurring, reduced product strength, and easy tearing.
【０００５】[0005]
【課題を解決するための手段】 本発明に係る自動車用
ウエザーストリップは、芯材１とこれを被覆するＥＰＤ
Ｍゴム組成物よりなるソリッドゴム層２と該ソリッドゴ
ム層２の少なくとも一部に装飾用被膜部４を設け、該装
飾用被膜部４をＥＰＤＭゴム組成物よりなり、ＥＰＤＭ
１００重量部に対して無水ケイ酸１０重量部以上配合
し、しかも、押出時にシボ模様を形成し、無加圧加硫し
たものである。Means for Solving the Problems A weather strip for an automobile according to the present invention comprises a core member 1 and an EPD covering the core member 1.
A solid rubber layer 2 made of an M rubber composition and a decorative coating portion 4 provided on at least a part of the solid rubber layer 2; and the decorative coating portion 4 is made of an EPDM rubber composition.
It is obtained by blending 10 parts by weight or more of silicic anhydride with 100 parts by weight, forming a grain pattern at the time of extrusion, and vulcanizing under no pressure.
【０００６】[0006]
【実施例】 実施例について説明すると、カラーゴム組
成物にはゴム製品としての必要強度を得るために、以下
に示すように、白色充填剤として、ケイ酸マグネシウム
（例えば、ミストロンベーパー）・炭酸カルシウム（例
えば、白艶華ＣＣ）の代わりに無水ケイ酸（例えば、日
本アエロジル製のアエロジルＲ９７２Ｄ・Ｒ９７４・Ｒ
９７６・１３０・２００その他）を添加する。すなわ
ち、 配合 実 施 例 比 較 例 ＥＰＤＭ １００ 重量部 同左 ケイ酸マグネシウム ０ 重量部 ５０重量部 炭酸カルシウム ０ 重量部 ５０重量部 亜鉛華 ５ 重量部 同左 ステアリン酸 １ 重量部 同左 加工助剤 ６ 重量部 同左 無水珪酸（アエロジルR972D) ５０ 重量部 ０ 酸化チタン １０ 重量部 同左 着色顔料 任意 重量部 同左 粉末硫黄 ２．０ 重量部 同左 チアゾール系促進剤 １．５ 重量部 同左 チウラム系促進剤 １．０ 重量部 同左 ジチオカルバメート系促進剤 １．０ 重量部 同左 脱水剤 ７．０ 重量部 同左EXAMPLES To explain the examples, in order to obtain the required strength as a rubber product, the color rubber composition contains magnesium silicate (for example, Mistron Vapor) and carbonic acid as a white filler as shown below. Silicic anhydride (for example, Aerosil R972D / R974 / R manufactured by Nippon Aerosil Co., Ltd.) instead of calcium (for example, Hakushinka CC)
976, 130, 200, etc.). That is, the blending examples Comparative examples EPDM 100 parts by weight Same as left Magnesium silicate 0 parts by weight 50 parts by weight Calcium carbonate 0 parts by weight 50 parts by weight Zinc white 5 parts by weight Stearic acid 1 part by weight Same as left Processing aid 6 parts by weight Same as left silicic anhydride (Aerosil R972D) 50 parts by weight 0 titanium oxide 10 parts by weight Same color pigment any parts Same powdered sulfur 2.0 parts by weight Same thiazole accelerator 1.5 parts by weight Same thiuram accelerator 1.0 parts by weight Same Dithiocarbamate accelerator 1.0 parts by weight Same as left Dehydrating agent 7.0 parts by weight Same as left
【０００７】なお、サンプルは上記ゴム組成物を押出機
で押出成形したものを連続的に高温無加圧加硫して製造
した。[0007] The sample was produced by extruding the above rubber composition with an extruder and continuously vulcanizing it at high temperature and without pressure.
【０００８】作用について説明すると、サンプルの加硫
条件の違いによる比重・発泡度を従来配合のものと比較
したものが表１である。The operation is described in Table 1. Table 1 shows a comparison of the specific gravity and the degree of foaming depending on the vulcanization conditions of the sample with those of the conventional compound.
【０００９】[0009]
【表１】 [Table 1]
【００１０】また、押出性及び引張強度の比較を表２に
示す。Table 2 shows a comparison between the extrudability and the tensile strength.
【００１１】[0011]
【表２】 [Table 2]
【００１２】上記の通り、無水ケイ酸を添加することに
よって、ゴム組成物に対する補強効果が向上し、高温無
加圧加硫成形時、機械的脱気や脱水剤の増量を行わなく
ても、発泡現象が起こらず、製品に付けたシボ模様がぼ
やけず、強度が格段に向上する。しかも押出成形時のエ
ッジ部が非常に滑らかに成形される。なお、無水ケイ酸
が１０重量部より少ないと補強効果が小さく発泡し、シ
ボがぼやけるし、又、やぶれやすいという問題が発生す
る。[0012] As described above, the addition of silicic anhydride improves the reinforcing effect on the rubber composition, and enables high-temperature non-pressurized vulcanization molding without mechanical deaeration and without increasing the amount of a dehydrating agent. The foaming phenomenon does not occur, the grain pattern applied to the product is not blurred, and the strength is remarkably improved. In addition, the edge portion during extrusion molding is formed very smoothly. If the amount of the silicic acid anhydride is less than 10 parts by weight, the reinforcing effect is small and foaming occurs, causing a problem that grain is blurred and easily broken.
【００１３】[0013]
【発明の効果】 本発明は以上のように構成されるた
め、高温無加圧加硫成形時、発泡現象が起こらず、例え
ばカーボンを充填したゴム組成物の本体に、ゴム組成物
の被膜部を押出機で共押出成形したものを連続的に高温
無加圧加硫する自動車用ドアウエザーストリップに好適
である。EFFECTS OF THE INVENTION Since the present invention is configured as described above, foaming does not occur during high-temperature non-pressurized vulcanization molding. For example, a rubber composition coated with carbon is coated on a rubber-filled main body. It is suitable for a door weather strip for automobiles, which is obtained by co-extrusion molding with an extruder and continuously vulcanizing at high temperature and without pressure.
【図１】 自動車ウエザーストリップの断面図である。FIG. 1 is a sectional view of an automobile weather strip.
１ 芯材 ２ ソリッドゴム層 ３ スポンジゴム層 ４ 被膜部 1 core material 2 solid rubber layer 3 sponge rubber layer 4 coating
Claims (1)
芯材（１）とこれを被覆するＥＰＤＭゴム組成物よりな
るソリッドゴム層（２）と該ソリッドゴム層（２）の少
なくとも一部に装飾用被膜部（４）を設け、該装飾用被
膜部（４）をＥＰＤＭゴム組成物よりなり、ＥＰＤＭ１
００重量部に対して無水ケイ酸１０重量部以上配合し、
しかも押出時にシボ模様を形成し、無加圧加硫してなる
自動車用ウエザーストリップ。 1. A weather strip for an automobile,
A core material (1) and an EPDM rubber composition covering the core material (1);
Solid rubber layer (2) and the solid rubber layer (2)
At least a part is provided with a decorative coating part (4),
The film part (4) is made of an EPDM rubber composition.
Compounding at least 10 parts by weight of silicic anhydride with respect to 00 parts by weight,
In addition, it forms a grain pattern during extrusion and is vulcanized without pressure
Automotive weather strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5100496A JP3026045B2 (en) | 1993-04-02 | 1993-04-02 | Automotive weather strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5100496A JP3026045B2 (en) | 1993-04-02 | 1993-04-02 | Automotive weather strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06287370A JPH06287370A (en) | 1994-10-11 |
| JP3026045B2 true JP3026045B2 (en) | 2000-03-27 |
Family
ID=14275544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5100496A Expired - Fee Related JP3026045B2 (en) | 1993-04-02 | 1993-04-02 | Automotive weather strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3026045B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128263B (en) * | 2011-03-17 | 2013-03-20 | 江阴海达橡塑股份有限公司 | Continuous extrusion and vulcanization molding method for whole-sealing encapsulating sponge rubber sealing strip |
| CN107471983A (en) * | 2017-09-21 | 2017-12-15 | 陈银 | A kind of sealing strip for door frame of automobile |
-
1993
- 1993-04-02 JP JP5100496A patent/JP3026045B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06287370A (en) | 1994-10-11 |
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