JPS61215015A - Treatment agent for tire vulcanization bladder and treating method therefor - Google Patents
Treatment agent for tire vulcanization bladder and treating method thereforInfo
- Publication number
- JPS61215015A JPS61215015A JP60057045A JP5704585A JPS61215015A JP S61215015 A JPS61215015 A JP S61215015A JP 60057045 A JP60057045 A JP 60057045A JP 5704585 A JP5704585 A JP 5704585A JP S61215015 A JPS61215015 A JP S61215015A
- Authority
- JP
- Japan
- Prior art keywords
- bladder
- tire
- primer
- silicone rubber
- mold release
- 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
- 238000004073 vulcanization Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 13
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 23
- 239000004945 silicone rubber Substances 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000006082 mold release agent Substances 0.000 claims abstract description 20
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 6
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract 2
- -1 polydimethylsiloxane Polymers 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 abstract description 8
- 239000005060 rubber Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 8
- 238000010073 coating (rubber) Methods 0.000 abstract description 6
- 239000003960 organic solvent Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000012744 reinforcing agent Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000010062 adhesion mechanism Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0654—Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
- B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
- B29C33/64—Silicone
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0654—Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms
- B29D2030/0655—Constructional or chemical features of the flexible cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、タイヤ加硫用ブラダ−処理剤とその処理方
法に関する。更に詳しくは、グリーンタイヤのモールド
加硫成形時においてグリーンタイヤの内側に装入するブ
ラダ−表面への離型被膜形成剤とその処理法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bladder treatment agent for tire vulcanization and a treatment method thereof. More specifically, the present invention relates to a release film-forming agent applied to the surface of a bladder inserted inside a green tire during vulcanization molding of a green tire, and a method for treating the same.
（従来の技術）
グリーンタイヤを加熱した金型（モールド）に入れ、そ
の中に高温、高圧の熱湯を通したゴム袋状のブラダ−に
よって金型に押しつけることによりタイヤの加硫成形が
行なわれるが、１回の加硫成形工程においてこのブラダ
−の使用は終るものではなく、この工程において多数回
繰返し使用されるのが普通である。しかしながら、ブラ
ダ−の組成ゴムと、グリーンタイヤのゴム内面とは、加
硫成形工程において高温高圧（１８０℃、水蒸気圧）下
に接触加圧されるために、加硫後、ブラダ−を加硫成形
タイヤから取り出す時、往々にして、両者は相互に接着
されてブラダ−が外れないことがあり、また、またブラ
ダ−表面がそのために剥離損傷することがある。したが
って、このブラダ−の匝用回数の大小は加硫工程の作業
時間の合理化とも関係し、加硫工程の作業時間の短縮に
影響し、ひいては、タイヤ製造工程の全体の作業時間に
大きく影響してくるものである。例えば、この同一・ブ
ラダ−による加硫タイヤ本数を上げる方法として、グリ
ーンタイヤとブラダ−との接着界面の剥離をよくするた
めに、ポリシロキサンの水性エマルション系の離型剤を
予めブラダ−表面に塗布処理する方法（４！開昭５７−
Ｉ＋１．３９３号、同５７−１＋３！１１月、同５７−
１１．９９２号）が知られているか、この方法では、ブ
ラダ−表面ど離型剤との密着性が不充分であるため、離
型効果は高くない。また、別の方法として、」二記のポ
リシロキサン系の離型剤の水の代りに有機溶剤系を用い
た方法もあるが（特開昭５９−１０６９４８号）。(Prior technology) A green tire is placed in a heated mold, and the tire is vulcanized by being pressed against the mold using a rubber bag-like bladder filled with high-temperature, high-pressure boiling water. However, the use of this bladder does not end in one vulcanization molding process, and it is common that it is used repeatedly in this process many times. However, since the composition rubber of the bladder and the inner surface of the rubber of the green tire are contacted and pressurized under high temperature and high pressure (180°C, water vapor pressure) during the vulcanization process, the bladder is vulcanized after vulcanization. When removed from the molded tire, the two are often glued together and the bladder cannot be removed, and the bladder surface may suffer delamination damage as a result. Therefore, the number of times the bladder is used is also related to the rationalization of the working time of the vulcanization process, and has an impact on shortening the working time of the vulcanization process, which in turn greatly affects the overall working time of the tire manufacturing process. It's something that comes. For example, as a way to increase the number of tires vulcanized using the same bladder, in order to improve the peeling of the adhesive interface between the green tire and the bladder, a polysiloxane aqueous emulsion-based mold release agent is applied to the bladder surface in advance. Method of coating treatment (4! 1977-
I+1.393 issue, 57-1+3!November, 57-
No. 11.992) is known, but this method does not have a high mold release effect because the adhesion of the mold release agent to the bladder surface is insufficient. Another method is to use an organic solvent instead of water in the polysiloxane mold release agent described in ``2'' (Japanese Patent Laid-Open No. 106948/1983).
有機溶剤系であるためにブラダ−ゴム表面との親和性が
改良されるためにその密着性効果は認められるどしても
なお不充分であり、これを補うために使用中においては
数回にわたって、この離型剤の再塗布処理をしばしば行
う必要があり、工程上難点がある。しかもやや高い濃度
の有機溶剤系であるために作業安全性に問題がある。Since it is an organic solvent-based product, its affinity with the bladder rubber surface is improved, so even though its adhesion effect is recognized, it is still insufficient, and to compensate for this, it has to be used several times during use. However, it is necessary to reapply the mold release agent frequently, which is a difficult point in the process. Moreover, since it is based on an organic solvent with a rather high concentration, there is a problem in work safety.
（発明が解決しようとする問題点）
従来のブラダ−処理剤では上述のごとく、その表面の離
型剤処理は充分ではなく、その結果離型剤の再塗付処理
加工や、安全性の面で問題があり。(Problems to be Solved by the Invention) As mentioned above, with conventional bladder treatment agents, the release agent treatment of the surface is not sufficient, and as a result, it is difficult to reapply the mold release agent, and there are problems in terms of safety. There is a problem.
これがひいてはブラダ−の寿命に影響してくるものであ
る。そこで、ブラダ−表面の離型剤処理として、−回の
処理を施すだけでその離型剤とブラダ−表面との密着性
にすぐれ、しかも加硫後のタイヤとブラダ−との剥離性
が良く、その結果ブラダ−自身の使用回数も充分延長さ
れると共に、加硫工程作業時間の短縮するための合理化
が強くのぞまれていた。この発明は、以上の問題点の解
決に鑑み、まず、ポリシロキサンの水性エマルジョン系
離型剤とブラダ−表面ゴムとの接着界面の化学的結合状
ｆルに着目、この発明をなすに至った。This in turn affects the lifespan of the bladder. Therefore, when treating the bladder surface with a mold release agent, it is possible to achieve excellent adhesion between the mold release agent and the bladder surface by just applying the treatment twice, and also to improve the peelability between the tire and the bladder after vulcanization. As a result, the number of times the bladder itself can be used can be sufficiently extended, and there has been a strong desire for rationalization to shorten the working time of the vulcanization process. In view of solving the above-mentioned problems, this invention was accomplished by first focusing on the chemical bonds at the adhesive interface between the polysiloxane aqueous emulsion mold release agent and the bladder surface rubber. .
（問題点を解決するための手段）
すなわち、ブラダ−表面（主としてブチルゴム）と反応
性ポリシロキサンの水性エマルジョン系離型剤との密着
性を向−１ニさせるために、離型剤の塗布前に、その前
処理として、ブラダ−表面にブラダ−とシリコン基部型
剤との両者の間に化学的相互作用を有する有機溶剤系の
プライマーを使用すること、またこの場合において、シ
リコン系離型剤に予め滑剤を含めることによりこの問題
点を解決したものである。すなわち、その手段として、
グリーンタイヤのモールド加硫に際し、該グリーンタイ
ヤの内側に装入使用するブラダ−表面に処理する離型剤
として、予め該ブラダ−表面へのプライマー処理剤と、
その表面へのシリコンゴム被膜形成剤とその処理方法で
ある。(Means for solving the problem) That is, in order to improve the adhesion between the bladder surface (mainly butyl rubber) and the reactive polysiloxane aqueous emulsion mold release agent, before applying the mold release agent. As a pretreatment, an organic solvent-based primer that has a chemical interaction between the bladder and the silicon-based mold agent is used on the bladder surface, and in this case, a silicon-based mold release agent is used. This problem was solved by including a lubricant in advance. In other words, as a means of
During mold vulcanization of the green tire, a primer treatment agent is applied to the bladder surface in advance as a release agent to treat the surface of the bladder used inside the green tire.
A silicone rubber coating forming agent on the surface and a treatment method thereof.
この発明によ夕いて、シリコンゴｌ〜被膜を形成するこ
とのできる反応性ポリシロキサンの水性エマルジョンは
、水分の存在下に重合し、それにより三次元架橋重合体
を形成するシリコンゴムをベースとしたものである。更
にこれに対して補強剤、触媒を添加し、水でもってその
濃度を調整する。In accordance with the present invention, aqueous emulsions of reactive polysiloxanes capable of forming silicone rubber coatings are produced based on silicone rubbers that polymerize in the presence of moisture, thereby forming three-dimensionally crosslinked polymers. It is something. Furthermore, a reinforcing agent and a catalyst are added to this, and the concentration is adjusted with water.
補強剤としては、例えばシリカ、炭カル、クレー等が用
いられシリコンゴムの５〜２０％（重量）添加する。こ
れは、シリコンゴム被膜形成性及びその強度を向上させ
るために用いる。触媒としては、一般に用いられる絹糸
、チタン系の化合物が用いられる。最後に水を添加して
その濃度を調整するがシリコンゴムに対し、１００〜９
００％（重量）が適当である。次に、この発明において
用いるプライマーとは、シリコンゴム被膜とブラダ−表
面ゴムの両方に対して高度の接着力を発揮するもので、
シリコン系化合物をベースとするものである。この発明
におけるブラダ−処理剤のプライマーの選定は、シリコ
ンゴム被膜形成の選定とは特定の組合せ関係が成立し、
シリコンゴム系の接着系にはシリコン系のプライマーが
最も適している。As the reinforcing agent, for example, silica, charcoal, clay, etc. are used, and are added in an amount of 5 to 20% (by weight) of the silicone rubber. This is used to improve the silicone rubber film formability and its strength. As the catalyst, commonly used silk threads and titanium-based compounds are used. Finally, water is added to adjust the concentration, but the concentration is 100 to 90% compared to silicone rubber.
00% (weight) is appropriate. Next, the primer used in this invention exhibits a high degree of adhesion to both the silicone rubber coating and the bladder surface rubber.
It is based on silicon-based compounds. The selection of the primer for the bladder treatment agent in this invention has a specific combination relationship with the selection of the silicone rubber film formation.
A silicone-based primer is most suitable for silicone rubber-based adhesive systems.
プライマーの接着機構については、化学結合、機械的投
錯効果、静電結合その他相互拡散説等種々説えられてい
るが、未だ定説はない。Various theories have been proposed regarding the adhesion mechanism of the primer, including chemical bonding, mechanical coupling effect, electrostatic bonding, and mutual diffusion theory, but there is no established theory yet.
この発明のブラダ−処理剤として用いるプライマーは、
一般式として
Ｒ″
で示されるものである。具体的には、例えは、１〜一レ
ーシリコン社製のプライマーＡ、Ｄ、または信越化学製
のプライマーＣ，Ｕが代表的である。The primer used as the bladder treatment agent of this invention is:
It is represented by the general formula R''.Specifically, typical examples include primers A and D manufactured by 1-1R Silicon Co., Ltd., and primers C and U manufactured by Shin-Etsu Chemical.
これらは何れも有機溶剤系の溶液として用いられる。All of these are used as organic solvent solutions.
この発明では、またシリコン被膜の強度を増加させるた
めには、補強材としてシリカ、炭カルまたはグｌノー等
一般の補強剤をシリコンゴムに対し５〜２０％添加する
。プライマー処理においてその粘度が高い時は処理加工
の円滑性を欠き、しかも接着力にも影響するので、必要
に応じ水を添加して用いる。この場合、シリコンゴムに
対し１００〜９００（重量）％添加するとよい。次に、
この発明における第二の発明に用いる滑剤は、生成シリ
コンゴム被膜の表面の平滑性を向」ニさせるために用い
るもので、ポリジメチルシロキサン（粘度３００〜１０
０万センチメー１−ルストークス−２５℃）をシリコン
ゴムの１〜３０（重ｆｔ）％を添加し、また、四フッｆ
ヒエチレンの場合にはシリコンゴムの１〜３０ （重量
）％を添加して用いるとこの目的は達成される。これら
は単独または混合して用いることができるのは当然であ
る。In the present invention, in order to increase the strength of the silicone coating, 5 to 20% of a general reinforcing agent such as silica, charcoal or glue is added to the silicone rubber. If the viscosity of the primer is high in the primer treatment, the processing will not be smooth and will also affect the adhesive strength, so water may be added as necessary. In this case, it is preferable to add 100 to 900% (by weight) of the silicone rubber. next,
The lubricant used in the second aspect of this invention is used to improve the surface smoothness of the produced silicone rubber film, and is polydimethylsiloxane (viscosity 300-10
00,000cm 1-Stokes-25℃) is added to 1-30% (by weight ft) of silicone rubber, and 4F
In the case of hyethylene, this purpose is achieved by adding 1 to 30% (by weight) of the silicone rubber. Naturally, these can be used alone or in combination.
次に、この発明におけるプライマー処理法としては、ま
ず、ブラダ−表面をガソリン、ゴム揮等でよくふきとっ
た後、温度１０〜４０°Ｃ１関係湿度３０％以上におい
てプライマーを塗布し、１０〜６０分て自然乾燥又は温
風乾燥する。Next, as the primer treatment method in this invention, first, after thoroughly wiping the surface of the bladder with gasoline, rubber powder, etc., a primer is applied at a temperature of 10 to 40°C, a relative humidity of 30% or more, and the primer is applied for 10 to 60 minutes. Dry naturally or with warm air.
プライマー処理したブラダ−を加硫機にとりつけた後、
温度５０〜９０℃、関係湿度３０％以」二においてシリ
コーン系離型剤を塗布し、１０〜６０分間で乾燥し、ブ
ラダ−表面にシリコンゴム被膜を形成する。次にこれを
グリーンタイヤ内に装着したのち加硫を行い、その離型
剤による離型効果が低下すれば、前記の踵型剤の塗布加
工を繰返し任意トこ行うこととなる。After attaching the primed bladder to the vulcanizer,
A silicone mold release agent is applied at a temperature of 50 to 90°C and relative humidity of 30% or more, and dried for 10 to 60 minutes to form a silicone rubber film on the bladder surface. Next, this is mounted inside a green tire and then vulcanized. If the mold release effect of the mold release agent decreases, the application process of the heel mold agent described above may be repeated as many times as desired.
（発明の効果）
この発明は、−に記のような構成であるために、ブラダ
−表面に滑性で且つ強靭性のシリコンゴム被膜を形成し
、タイヤ加硫工程後における加硫タイヤどブラダ−どの
離型性がすぐれており、その結果タイヤ加硫作業能率が
向」ニし、しかもこの場合離型剤塗布処理を一度施せば
、表面フィルムの耐久性がすぐれているので離型剤寿命
が長いというが【プでなく、ひいては、ブラダ−自身の
耐久性寿命の延長をもたらすものである。すなわち、第
２表に示すごとく、離型剤処理前にプライマー処理加工
を施したものについては、その加硫回数は、プライマー
処理加工を施さないものに比へ３〜４ｆ合の効果が発揮
されており、しかも滑剤を添加したものは４〜５倍の効
果がみられタイヤ加硫工程の改良に大きく貢献するもの
である。(Effects of the Invention) Since the present invention has the configuration as described in -, a smooth and tough silicone rubber coating is formed on the bladder surface, and the vulcanized tire bladder after the tire vulcanization process is -Which type of mold release property is excellent, and as a result, the tire vulcanization work efficiency is improved.Moreover, in this case, once the mold release agent is applied, the durability of the surface film is excellent, so the mold release agent has a long lifespan. Although it is said that the bladder has a long life span, it does not have a long life span, but it also extends the durability life of the bladder itself. In other words, as shown in Table 2, the number of vulcanizations performed with primer treatment before mold release agent treatment is 3 to 4 times more effective than those without primer treatment. Moreover, the effect of the lubricant added is 4 to 5 times greater, and it greatly contributes to the improvement of the tire vulcanization process.
（実施例）
タイヤサイズ］、１．Ｒ２４，５の１へラック・バス用
ラジアルタイヤの加硫工程において、そのブラダ−表面
を第１表記戦記合の離型剤で処理し、これを用いてタイ
ヤを加硫（１８０℃×６０分）し、その連続タイヤ加硫
回数で評価した。その結果を第２表に示した。(Example) Tire size], 1. In the vulcanization process of R24,5-1 radial tires for racks and buses, the bladder surface is treated with a mold release agent specified in the first description, and the tire is vulcanized using this (180°C x 60 minutes). ) and evaluated by the number of consecutive tire vulcanizations. The results are shown in Table 2.
＊タイヤ加硫回数とは、最初に表面処理したブラダ−で
タイヤを連続的に繰返して加硫作業を行い、その過程に
おいて、加硫後タイヤとブラダ−間に密着傾向がみられ
るまでの加硫できた回数のことである。*The number of tire vulcanizations refers to the number of times the tire is vulcanized by repeatedly vulcanizing the tire with the bladder that has been surface-treated first, until there is a tendency for adhesion between the tire and the bladder after vulcanization. This refers to the number of times sulfur was produced.
Claims (5)
タイヤの内側に装入使用するブラダー表面に処理する離
型剤として、予め該ブラダー表面へのプライマー処理剤
と、次いでその表面にシリコンゴム被膜形成剤とよりな
ることを特徴とするタイヤ加硫用ブラダー処理剤。(1) As a mold release agent to treat the surface of the bladder used inside the green tire during mold vulcanization of the green tire, a primer treatment agent is applied to the bladder surface in advance, and then a silicone rubber film forming agent is applied to the surface of the bladder. A bladder treatment agent for tire vulcanization characterized by:
であることを特徴とする特許請求の範囲第１項記載のタ
イヤ加硫用ブラダー処理剤。(2) The bladder treatment agent for tire vulcanization according to claim 1, wherein the primer is a silicone-based solvent-based primer.
とを特徴とする特許請求の範囲第１項または第２項記載
のタイヤ加硫用ブラダー処理剤。(3) The bladder treatment agent for tire vulcanization according to claim 1 or 2, which is a silicone rubber film forming agent that contains a lubricant in advance.
化エチレンの各単独またはこれらの混合よりなることを
特徴とする特許請求の範囲第３項記載のタイヤ加硫用ブ
ラダー処理剤。(4) The bladder treatment agent for tire vulcanization according to claim 3, characterized in that the lubricant is polydimethylsiloxane or tetrafluoroethylene, either alone or in combination.
ンタイヤの内側に装入使用するブラダー表面に、予めプ
ライマー処理を施し、次いでシリコンゴム被膜を形成す
ること特徴とするタイヤ加硫用ブラダーの処理方法。(5) A method for treating a bladder for tire vulcanization, which comprises applying a primer treatment to the surface of the bladder used inside the green tire in mold vulcanization of the green tire, and then forming a silicone rubber film. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60057045A JPS61215015A (en) | 1985-03-20 | 1985-03-20 | Treatment agent for tire vulcanization bladder and treating method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60057045A JPS61215015A (en) | 1985-03-20 | 1985-03-20 | Treatment agent for tire vulcanization bladder and treating method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61215015A true JPS61215015A (en) | 1986-09-24 |
Family
ID=13044478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60057045A Pending JPS61215015A (en) | 1985-03-20 | 1985-03-20 | Treatment agent for tire vulcanization bladder and treating method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61215015A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005042243A1 (en) * | 2003-10-31 | 2005-05-12 | Pirelli Pneumatici S.P.A. | An expandable bladder for tyre-curing apparatuses, a manufacturing method thereof, and a process for manufacturing tyres for vehicle wheels |
| KR100517532B1 (en) * | 1999-11-05 | 2005-09-28 | 한국타이어 주식회사 | Method for adhering silicon rubber to vulcanized bladder with improved adhesive force |
| WO2006106236A2 (en) * | 2005-04-08 | 2006-10-12 | Bluestar Silicones France | Composition based on siloxane for the moulding/unmoulding of tyres |
| US10434685B2 (en) | 2015-02-20 | 2019-10-08 | Shin-Etsu Chemical Co., Ltd. | Release agent for tire bladder, tire bladder, and pneumatic tire |
-
1985
- 1985-03-20 JP JP60057045A patent/JPS61215015A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100517532B1 (en) * | 1999-11-05 | 2005-09-28 | 한국타이어 주식회사 | Method for adhering silicon rubber to vulcanized bladder with improved adhesive force |
| WO2005042243A1 (en) * | 2003-10-31 | 2005-05-12 | Pirelli Pneumatici S.P.A. | An expandable bladder for tyre-curing apparatuses, a manufacturing method thereof, and a process for manufacturing tyres for vehicle wheels |
| WO2006106236A2 (en) * | 2005-04-08 | 2006-10-12 | Bluestar Silicones France | Composition based on siloxane for the moulding/unmoulding of tyres |
| FR2884170A1 (en) * | 2005-04-08 | 2006-10-13 | Rhodia Chimie Sa | USE OF A SILOXANE-BASED COMPOSITION FOR THE MOLDING-DEMOLDING OF TIRES |
| WO2006106236A3 (en) * | 2005-04-08 | 2008-04-17 | Bluestar Silicones France | Composition based on siloxane for the moulding/unmoulding of tyres |
| US10434685B2 (en) | 2015-02-20 | 2019-10-08 | Shin-Etsu Chemical Co., Ltd. | Release agent for tire bladder, tire bladder, and pneumatic tire |
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