JPH1067039A - Manufacture of silicone type rubber foam - Google Patents
Manufacture of silicone type rubber foamInfo
- Publication number
- JPH1067039A JPH1067039A JP8228344A JP22834496A JPH1067039A JP H1067039 A JPH1067039 A JP H1067039A JP 8228344 A JP8228344 A JP 8228344A JP 22834496 A JP22834496 A JP 22834496A JP H1067039 A JPH1067039 A JP H1067039A
- Authority
- JP
- Japan
- Prior art keywords
- foam
- silicone rubber
- speed
- pressure
- type rubber
- 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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、断熱材、ＯＡ機器
用ロール、緩衝材、化粧用パフ、各種成形体の軽量化等
に用いられるシリコーン系ゴム発泡体の製造方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a silicone rubber foam used for heat insulation, rolls for OA equipment, cushioning materials, cosmetic puffs, weight reduction of various molded articles, and the like.
【０００２】[0002]
【従来の技術】熱可塑性樹脂発泡体を製造する方法とし
ては、発泡剤を用いて化学反応によって気泡を発生させ
る化学発泡と、気体を直接樹脂に混合する物理発泡とが
一般的に知られており、シリコーン系ゴム分野では、専
ら硬化反応と同時に化学発泡を行う方法が採られてき
た。そしてこの方法によって得られる気泡径は、例えば
特開平7-241934号公報に示されるように、シリコーンゴ
ムパウダーを混入することにより気泡径とその分散性が
均一で微細な気泡を有する発泡体を得る工夫がなされて
いるが、この方法によっても気泡径は 300〜 700μｍ程
度であり、また本発明者の研究によれば、シリコーン系
ゴム組成物の硬化方法を種々の方法で制御することによ
り、 100超〜 300μｍ程度の気泡径が得られるが、これ
以下にはならなかった。2. Description of the Related Art As a method for producing a thermoplastic resin foam, there are generally known chemical foaming in which bubbles are generated by a chemical reaction using a foaming agent, and physical foaming in which a gas is directly mixed with a resin. In the field of silicone rubber, a method of exclusively performing a chemical foaming simultaneously with a curing reaction has been adopted. The bubble diameter obtained by this method is, for example, as shown in JP-A-7-241934, by mixing silicone rubber powder to obtain a foam having uniform and fine bubbles with a uniform bubble diameter and its dispersibility. Although a device has been devised, the bubble diameter is also about 300 to 700 μm by this method, and according to the study of the present inventors, by controlling the curing method of the silicone rubber composition by various methods, 100 A bubble diameter of about ~ 300 μm was obtained, but did not become smaller.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来のゴ
ム 泡体の製造方法、特にシリコーン系ゴム発泡体の製
造方法では、発泡と硬化が加熱という１つの制御条件で
同時に進行し且つ発泡温度と硬化温度が接近しているた
め、微細で均一な気泡径と気泡の均一な分散性を有する
［以下単に（均一な）と略す］発泡体を安定して得るこ
とが困難であり、また均一な発泡体を安定して得る為に
は、硬化速度と発泡速度を高度に制御する必要があっ
た。それによっても気泡径は前記の範囲が限度であり、
より微細な気泡径を有する発泡体を得ることは不可能で
あった。すなわち本発明は、硬化速度と発泡速度を高度
に制御することなく気泡径が 100μｍ以下の均一な発泡
体を安定して生産性良く得ることができる、シリコーン
系ゴム発泡体の製造方法を提供するものである。However, in the above-mentioned conventional method for producing a rubber foam, in particular, a method for producing a silicone rubber foam, foaming and curing proceed simultaneously under one control condition of heating, and the foaming temperature and the foaming temperature increase. Since the curing temperatures are close to each other, it is difficult to stably obtain a foam having a fine and uniform cell diameter and a uniform dispersibility of cells [hereinafter simply referred to as (uniform)]. In order to obtain a foam stably, it was necessary to control the curing speed and the foaming speed at a high level. Even so, the bubble diameter is limited to the above range,
It was not possible to obtain a foam having a finer cell diameter. That is, the present invention provides a method for producing a silicone rubber foam which can stably obtain a uniform foam having a cell diameter of 100 μm or less with high productivity without highly controlling the curing rate and the foaming rate. Things.
【０００４】[0004]
【課題を解決するための手段】本発明は前記従来の問題
点を解決したシリコーン系ゴム発泡体の製造方法に関す
るものであり、押出機を使用し、未硬化または半硬化状
態のシリコーン系ゴム組成物に、常温常圧で気体の物質
（以下単に気体物質という）を、その臨界圧力以上、臨
界温度以上で浸透、拡散させた後、圧力を低下させて未
硬化あるいは半硬化状態で発泡させ、成形硬化を行うシ
リコーン系ゴム発泡体の製造方法において、気体物質の
注入部における、気体物質とシリコーン系ゴム組成物と
の接触面積Ｓ（cm2 ）と、シリコーン系ゴム組成物の押
出速度Ｖ（cm3/min.）との関係が、Ｓ≧２Ｖであり、圧
力を低下させる速度が10kgf/cm2/sec.以上であることを
特徴とするものである。SUMMARY OF THE INVENTION The present invention relates to a method for producing a silicone rubber foam which solves the above-mentioned conventional problems, and uses an extruder to prepare an uncured or semi-cured silicone rubber composition. After permeating and diffusing a gaseous substance (hereinafter simply referred to as a gaseous substance) at a normal temperature and normal pressure at a temperature higher than its critical pressure and critical temperature, the pressure is lowered and foamed in an uncured or semi-cured state, In the method for producing a silicone rubber foam which undergoes molding and curing, the contact area S (cm 2 ) between the gaseous substance and the silicone rubber composition at the gas substance injection portion and the extrusion speed V ( (cm 3 / min.), S ≧ 2 V, and the rate of pressure reduction is 10 kgf / cm 2 / sec. or more.
【０００５】[0005]
【発明の実施の形態】即ち、本発明者は、均一なシリコ
ーン系ゴム発泡体を安定して生産性良く得るためには、
物理発泡により、微細な気泡を連続的に発生させればよ
いことに着眼し、その方法、条件、原料について種々検
討を重ねた結果本発明に到達した。以下に本発明につい
て詳しく述べる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to stably obtain a uniform silicone rubber foam with good productivity, the present inventor has proposed:
Focusing on the fact that fine bubbles should be continuously generated by physical foaming, the present inventors arrived at the present invention as a result of various studies on the method, conditions and raw materials. Hereinafter, the present invention will be described in detail.
【０００６】本発明において気体物質を臨界温度以上、
臨界圧力以上としてシリコーン系ゴム組成物へ浸透、拡
散させるのは、気体物質を高密度かつ速やかにシリコー
ン系ゴム組成物中へ浸透、拡散させるためである。ま
た、気体物質の注入部における気体物質とシリコーン系
ゴム組成物との接触面積Ｓ（cm2 ）と、シリコーン系ゴ
ム組成物の押出速度Ｖ（cm3/min.）との関係を、Ｓ≧２
Ｖとするのは、臨海温度以上、臨界圧力以上にある気体
物質を、シリコーン系ゴム組成物中へ均一且つ十分に浸
透、拡散させるためで、Ｓの値が２Ｖ未満では圧力を低
下させたとき発泡する気泡数が少なくなり、発泡体とし
ての十分な性能のものを得ることができない。つまりシ
リコーン系ゴムを発泡させる目的は低硬度の成形体を得
ることにあり、具体的には発泡前に硬度50のものを発泡
体とした時に20〜40。 とするためには、発泡倍率1.5 以
上とする必要があるが、Ｓ＜２Ｖではこのような発泡体
を得ることができない。[0006] In the present invention, the gaseous substance is kept at a critical temperature or higher,
The reason why the gaseous substance permeates and diffuses into the silicone rubber composition at a critical pressure or higher is to permeate and diffuse gaseous substances quickly and densely into the silicone rubber composition. The relationship between the contact area S (cm 2 ) between the gaseous substance and the silicone rubber composition at the gaseous substance injection part and the extrusion speed V (cm 3 / min.) Of the silicone rubber composition is expressed as S ≧ 2
The value of V is used to uniformly and sufficiently penetrate and diffuse gaseous substances having a critical temperature or higher and a critical pressure or higher into the silicone rubber composition. When the value of S is less than 2 V, the pressure is reduced. The number of cells to be foamed is reduced, and a foam having sufficient performance cannot be obtained. In other words, the purpose of foaming the silicone rubber is to obtain a molded product having a low hardness. Specifically, when the foamed material has a hardness of 50 before foaming, the molded product has a hardness of 20 to 40 . In order to achieve this, the expansion ratio must be at least 1.5, but such foam cannot be obtained at S <2V.
【０００７】さらに本発明において圧力を10kgf/cm2/se
c.以上の速度で低下させるのは、 100μｍ以下、具体的
には100 μｍの微細な気泡を形成させるためであり、10
kgf/cm2/sec.未満の速度で低下させると気泡径は 100μ
ｍ超、著しくは 500μｍ以上となり、目的の発泡体を得
ることができない。また、圧力を低下させる速度の上限
は特に限定されないが、工業的には 500kgf/cm2/sec.以
下で設計するのが実用的である。Further, in the present invention, the pressure is set to 10 kgf / cm 2 / se.
c. The reduction at the above speed is to form fine bubbles of 100 μm or less, specifically, 100 μm.
When reduced at a speed less than kgf / cm 2 / sec.
m, not less than 500 μm, and the desired foam cannot be obtained. The upper limit of the pressure decreasing speed is not particularly limited, but it is practically designed to be 500 kgf / cm 2 / sec or less industrially.
【０００８】本発明に用いられるシリコーン系ゴム組成
物としては、従来公知の物を用いれば良く、シロキサン
結合を有する高分子化合物とパーオキサイドとからなる
もの、シロキサン結合を有する高分子化合物及び珪素原
子に直結した水素原子を１分子中に少なくとも２個以上
有するオルガノハイドロジェンポリシロキサンと白金系
触媒とからなるものなどが挙げられる。また、上記シロ
キサン結合を有する高分子化合物及びオルガノハイドロ
ジェンポリシロキサンは、エポキシ基、アクリル基、ハ
ロゲン原子等を含むものであっても良い。As the silicone rubber composition used in the present invention, a conventionally known silicone rubber composition may be used. The silicone rubber composition comprises a polymer compound having a siloxane bond and a peroxide, a polymer compound having a siloxane bond, and a silicon atom. And those comprising an organohydrogenpolysiloxane having at least two hydrogen atoms per molecule in one molecule and a platinum-based catalyst. Further, the high molecular compound having a siloxane bond and the organohydrogenpolysiloxane may contain an epoxy group, an acrylic group, a halogen atom, or the like.
【０００９】さらに本発明においては、シリコーン系ゴ
ム組成物の硬化剤として、硬化温度の異なる２種以上の
ものを併用し、まず前記硬化剤として少なくとも１種を
残して、その他の硬化剤によりシリコーン系ゴム組成物
の半硬化を行い、気体物質を注入浸透、拡散させた後、
圧力を低下させて半硬化状態で発泡させ、残った硬化剤
を使用して加熱硬化を行えば、発泡時の組成物の粘度調
整が任意にでき、発泡状態の制御及び成形が容易にでき
る。なおシリコーン系ゴム組成物には、必要に応じて、
難燃剤、老化防止剤、耐候性向上剤、耐衝撃性向上剤、
補強剤、着色剤、導電性付与剤等の各種添加剤を添加す
ることは差し支えない。なお、本発明における未硬化あ
るいは半硬化状態とは、押出機、ダイス内において塑性
流動し、所望の形に成形、硬化させることが可能な状態
を示す。Further, in the present invention, as a curing agent for the silicone rubber composition, two or more curing agents having different curing temperatures are used in combination, and at least one of the curing agents is left, and the silicone is cured with another curing agent. After semi-curing the system rubber composition and injecting and diffusing gaseous substances,
If the pressure is reduced to cause foaming in a semi-cured state and heating and curing is performed using the remaining curing agent, the viscosity of the composition at the time of foaming can be arbitrarily adjusted, and control of the foamed state and molding can be easily performed. Incidentally, the silicone rubber composition, if necessary,
Flame retardant, anti-aging agent, weather resistance improver, impact resistance improver,
Various additives such as a reinforcing agent, a coloring agent, and a conductivity-imparting agent may be added. The uncured or semi-cured state in the present invention refers to a state in which an uncured or semi-cured state plastically flows in an extruder or a die, and can be formed and cured into a desired shape.
【００１０】本発明に使用される気体物質としては、特
に制限はないが、水素、ヘリウム、窒素、酸素、ネオ
ン、アルゴン、二酸化炭素、メタン、エタン、プロパ
ン、ブタン、エチレン、プロピレン等及びこれらの混合
物から選ばれた少なくとも１種のものが例示され、化学
的に安定であり、臨界温度が常温に近いことから特に二
酸化炭素が好ましい。The gaseous substance used in the present invention is not particularly limited, but includes hydrogen, helium, nitrogen, oxygen, neon, argon, carbon dioxide, methane, ethane, propane, butane, ethylene, propylene and the like. At least one selected from a mixture is exemplified, and carbon dioxide is particularly preferred because it is chemically stable and has a critical temperature close to room temperature.
【００１１】本発明に用いられる装置としては、図１の
ような公知の押出機が使用可能である。この際前述のよ
うに気体物質５（図１ではCO2 ５) の注入部における、
気体物質５とシリコーン系ゴム組成物１との接触面積Ｓ
（cm2 ）とシリコーン系ゴム組成物１の押出速度Ｖ（cm
3/min.）との関係を、Ｓ≧２Ｖとすることが均一なシリ
コーン系ゴム発泡体６を得るのに必要であり、この気体
物質注入部は、押出機中の、少なくとも１カ所以上に設
けられている圧縮部以後に設けるか、図１のようにギア
ポンプ３によりシリコーン系ゴム組成物１の圧を一定値
以上に上昇させる部分の後に設けることが良く、このよ
うにすれば、気体物質５の押出機内での逆流を防ぐこと
ができる。また、本発明におけるＳと２Ｖの関係を満た
す手段としては、この気体物質５の注入部に空間を設け
てそこに多孔質物体４を充填し、この多孔質物体４を介
して気体物質５を注入すれば、所望の接触面積を容易に
得ることができるとともにシリコーン系ゴム組成物１が
気体物質注入部に逆流するのを防ぐことができる。A known extruder as shown in FIG. 1 can be used as an apparatus used in the present invention. At this time, as described above, the gas substance 5 (CO 2 5 in FIG. 1)
Contact area S between gaseous substance 5 and silicone rubber composition 1
(Cm 2 ) and the extrusion speed V (cm) of the silicone rubber composition 1
3 / min.) Is necessary to obtain a uniform silicone rubber foam 6 so that S ≧ 2 V. This gaseous substance injection part is provided at least at one or more places in the extruder. It may be provided after the provided compression portion, or after the portion in which the pressure of the silicone rubber composition 1 is increased to a certain value or more by the gear pump 3 as shown in FIG. 1. 5 can prevent backflow in the extruder. As means for satisfying the relationship between S and 2V in the present invention, a space is provided at the injection portion of the gaseous substance 5 and the porous substance 4 is filled therein, and the gaseous substance 5 is injected through the porous substance 4. By injecting, it is possible to easily obtain a desired contact area and to prevent the silicone rubber composition 1 from flowing back to the gas substance injection portion.
【００１２】シリコーン系ゴム組成物を硬化させる方法
としては、加熱、電子線照射、ＵＶ照射、放射線照射等
が例示され、シリコーン系ゴム組成物の種類により適宜
選択することが可能であるが、安全性、汎用性を考慮す
ると加熱、または電子線照射による方法が好ましく、更
には、本発明においてはシリコーン系ゴム組成物を発泡
させた後に硬化させるため、発泡した未硬化または半硬
化状態のシリコーン系ゴム組成物が断熱性を有するよう
になるので、高周波加熱による方法か、電子線照射によ
る方法などの、熱伝導性に影響を与えず、内部まで均一
に硬化させる方法を用いることが最も好ましい。Examples of the method of curing the silicone rubber composition include heating, electron beam irradiation, UV irradiation, and radiation irradiation. The method can be appropriately selected depending on the type of the silicone rubber composition. Considering the properties and versatility, a method using heating or electron beam irradiation is preferable.Furthermore, in the present invention, since the silicone rubber composition is cured after foaming, the foamed uncured or semi-cured silicone resin is used. Since the rubber composition has heat insulating properties, it is most preferable to use a method of uniformly curing the inside without affecting the thermal conductivity, such as a method using high-frequency heating or a method using electron beam irradiation.
【００１３】[0013]
【実施例】次に実施例を挙げて本発明を説明する。 （実施例１）気体物質と組成物との接触面積Ｓを250cm2
となるような多孔質セラミックスを充填した気体物質注
入部をギアポンプの後に設けた50mm単軸ゴム用押出機
に、シリコーン系ゴムコンパウンド「ＫＥ１５１−Ｕ」
（信越化学製、商品名） 100重量部と加硫剤・ビス−2,
4 - ジクロロベンゾイルパーオキサイド・「Ｃ−２」
（信越化学製、商品名）３重量部とからなる混練物（比
重1.15）を供給した。ギアポンプにより上記混練物圧を
150kgf/cm2まで上昇させるとともに温度を50℃まで上昇
させ、二酸化炭素を上記多孔質セラミックスを介して50
℃、152kgf/cm2で供給し、φ２mmの丸ダイスから押し出
すと同時に圧力を２秒間で開放しシリコーンゴム組成物
の発泡体を得た。このときの組成物の押出速度Ｖは43.5
cm3/min とした。これを高周波加熱により、 180℃で２
分間処理した後、 200℃のオーブンで４時間アフターキ
ュアしてシリコーンゴム発泡体を得た。この時の発泡倍
率は 2.6倍、気泡の平均サイズは42μｍ、気泡サイズの
標準偏差は 3.1μｍであった。Next, the present invention will be described with reference to examples. (Example 1) A contact area S between a gaseous substance and a composition was set to 250 cm 2.
A silicone rubber compound "KE151-U" was placed in a 50 mm single-screw rubber extruder in which a gaseous substance injection section filled with porous ceramics was provided after a gear pump.
(Shin-Etsu Chemical, trade name) 100 parts by weight and vulcanizing agent bis-2,
4-Dichlorobenzoyl peroxide "C-2"
(Manufactured by Shin-Etsu Chemical Co., Ltd., 3 parts by weight) was supplied. The above kneaded material pressure is increased by a gear pump.
The temperature together is increased to 150 kgf / cm 2 was increased to 50 ° C., 50 carbon dioxide through the porous ceramic
C. at 152 kgf / cm 2 and extruded from a φ2 mm round die, and at the same time the pressure was released for 2 seconds to obtain a silicone rubber composition foam. The extrusion speed V of the composition at this time was 43.5
cm 3 / min. This is heated at 180 ° C by high frequency heating.
After the treatment for 2 minutes, after-curing was performed in an oven at 200 ° C. for 4 hours to obtain a silicone rubber foam. At this time, the expansion ratio was 2.6 times, the average cell size was 42 μm, and the standard deviation of the cell size was 3.1 μm.
【００１４】（比較例１）実施例１で使用した押出機中
の同じ位置の気体物質注入部に、気体物質と混練物との
接触面積Ｓが 50cm2となるような多孔質セラミックスを
充填し、シリコーンゴムコンパウンド「ＫＥ１５１−
Ｕ」（前出） 100重量部と加硫剤・ビス−2,4 - ジクロ
ロベンゾイルパーオキサイド・「Ｃ−２」（前出）３重
量部とからなる混練物を供給した。ギアポンプにより混
練物圧を150kgf/cm2まで上昇させるとともに、温度を50
℃まで上昇させ、二酸化炭素を上記多孔質セラミックス
を介して50℃、152kgf/cm2で供給し、φ２mmの丸ダイス
から押し出すと同時に圧力を２秒間で解放した。このと
きの混練物押出速度Ｖを43.5cm3/min とした。これを高
周波加熱により、 180℃で２分間処理した後、 200℃の
オーブンで４時間アフターキュアしてシリコーンゴム組
成物発泡体を得た。この時の発泡倍率は 1.2倍で、気泡
数が少なく発泡体と呼べるものではなかった。Comparative Example 1 Into the extruder used in Example 1 at the same position of the gaseous substance injection section was filled with porous ceramics such that the contact area S between the gaseous substance and the kneaded material was 50 cm 2. , Silicone rubber compound "KE151-
A kneaded product comprising 100 parts by weight of "U" (supra) and 3 parts by weight of a vulcanizing agent bis-2,4-dichlorobenzoyl peroxide / "C-2" (supra) was supplied. With raising the kneaded product pressure to 150 kgf / cm 2 by a gear pump, the temperature 50
° C, carbon dioxide was supplied at 50 ° C and 152 kgf / cm 2 through the porous ceramics, and extruded from a φ2 mm round die, and the pressure was released in 2 seconds. The kneaded material extrusion speed V at this time was 43.5 cm 3 / min. This was treated at 180 ° C. for 2 minutes by high-frequency heating, and after-cured in an oven at 200 ° C. for 4 hours to obtain a silicone rubber composition foam. The expansion ratio at this time was 1.2 times, and the number of cells was small, and it could not be called a foam.
【００１５】[0015]
【発明の効果】本発明によれば、硬化速度と発泡速度を
高度に制御することなしに、気泡のサイズが 100μｍ未
満の、均一で微細な気泡径と均一な気泡分散性を有する
シリコーン系ゴム発泡体を安定して得ることができるの
で、製造コストダウンができ、様々な用途への応用が可
能となる。According to the present invention, a silicone rubber having a uniform and fine cell diameter and a uniform cell dispersibility, having a cell size of less than 100 μm, without highly controlling the curing rate and the foaming rate. Since the foam can be obtained stably, the production cost can be reduced, and application to various uses is possible.
【図１】本発明において用いられる押出機の一例の縦断
面図である。FIG. 1 is a longitudinal sectional view of an example of an extruder used in the present invention.
１ シリコーン系ゴム組成物、 ６ シリコーン系
ゴム発泡体。 ２ スクリュー、 ３ ギアポンプ、 ４ 多孔質物体、 ５ ＣＯ2 （気体物質）、1 silicone rubber composition, 6 silicone rubber foam. 2 screw, 3 gear pump, 4 porous body, 5 CO 2 (gas substance),
Claims (1)
態のシリコーン系ゴム組成物に、常温常圧で気体の物質
を、その臨界圧力以上、臨界温度以上で浸透、拡散させ
た後、圧力を低下させて未硬化あるいは半硬化状態で発
泡させ、成形硬化を行うシリコーン系ゴム発泡体の製造
方法において、常温常圧で気体の物質の注入部におけ
る、常温常圧で気体の物質とシリコーン系ゴム組成物と
の接触面積Ｓ（cm2 ）と、シリコーン系ゴム組成物の押
出速度Ｖ（cm3/min.）との関係が、Ｓ≧２Ｖであり、圧
力を低下させる速度が10kgf/cm2/sec.以上であることを
特徴とするシリコーン系ゴム発泡体の製造方法。An extruder is used to permeate and diffuse a gaseous substance at room temperature and normal pressure into a silicone rubber composition in an uncured or semi-cured state at room temperature and normal pressure at a critical pressure or higher and a critical temperature or higher. In a method for producing a silicone rubber foam in which the pressure is reduced and foamed in an uncured or semi-cured state and subjected to molding and curing, a gaseous substance and a silicone are injected at a normal temperature and a normal pressure in an injection section of the gaseous substance at a normal temperature and a normal pressure. The relationship between the contact area S (cm 2 ) with the system rubber composition and the extrusion speed V (cm 3 / min.) Of the silicone rubber composition is S ≧ 2 V, and the speed at which the pressure is reduced is 10 kgf / cm 2 / sec. or more, a method for producing a silicone rubber foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22834496A JP3642890B2 (en) | 1996-08-29 | 1996-08-29 | Method for producing silicone rubber foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22834496A JP3642890B2 (en) | 1996-08-29 | 1996-08-29 | Method for producing silicone rubber foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1067039A true JPH1067039A (en) | 1998-03-10 |
| JP3642890B2 JP3642890B2 (en) | 2005-04-27 |
Family
ID=16874999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22834496A Expired - Fee Related JP3642890B2 (en) | 1996-08-29 | 1996-08-29 | Method for producing silicone rubber foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3642890B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006077403A1 (en) * | 2005-01-18 | 2006-07-27 | Zotefoams Plc. | Silicone foams, process to make them and applications thereof |
| JP2009256451A (en) * | 2008-04-16 | 2009-11-05 | Shin Etsu Chem Co Ltd | Production method of silicone rubber foam and silicone rubber foam |
| JP2011066419A (en) * | 2009-09-15 | 2011-03-31 | Maintek Computer (Suzhou) Co Ltd | Light-emitting diode |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6531891B2 (en) | 2014-10-09 | 2019-06-19 | シンジーテック株式会社 | Method of manufacturing fixing / pressure roll and method of manufacturing fixing device |
-
1996
- 1996-08-29 JP JP22834496A patent/JP3642890B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006077403A1 (en) * | 2005-01-18 | 2006-07-27 | Zotefoams Plc. | Silicone foams, process to make them and applications thereof |
| US8173717B2 (en) | 2005-01-18 | 2012-05-08 | Zotefoams Plc. | Silicone foams, process to make them and applications thereof |
| JP2009256451A (en) * | 2008-04-16 | 2009-11-05 | Shin Etsu Chem Co Ltd | Production method of silicone rubber foam and silicone rubber foam |
| JP2011066419A (en) * | 2009-09-15 | 2011-03-31 | Maintek Computer (Suzhou) Co Ltd | Light-emitting diode |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3642890B2 (en) | 2005-04-27 |
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