WO2007123220A1 - 低透過性ゴム積層体及びそれを用いた空気入りタイヤ - Google Patents
低透過性ゴム積層体及びそれを用いた空気入りタイヤ Download PDFInfo
- Publication number
- WO2007123220A1 WO2007123220A1 PCT/JP2007/058684 JP2007058684W WO2007123220A1 WO 2007123220 A1 WO2007123220 A1 WO 2007123220A1 JP 2007058684 W JP2007058684 W JP 2007058684W WO 2007123220 A1 WO2007123220 A1 WO 2007123220A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- low
- permeability
- layer
- resin layer
- rubber
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0008—Compositions of the inner liner
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C5/00—Inflatable pneumatic tyres or inner tubes
- B60C5/12—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
- B60C5/14—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
Definitions
- the present invention relates to a laminate of a low-permeability resin layer and a rubber layer and a pneumatic tire using the same, and more specifically, effectively demonstrates the firing of a low-permeability resin.
- the present invention relates to a low-permeability rubber laminate that suppresses and has an excellent air pressure maintaining function, and a pneumatic tire field using the same.
- a low air permeability resin is laminated with rubber and used as an air permeation prevention layer (inner liner), for example (see, for example, Japanese Patent Laid-Open No. 1 3 1 4 1 6 4).
- the air contained in the rubber layer and the gas generated by the vulcanization reaction increase the pressure of the gas in the rubber layer. If the Young's modulus and strength of the rubber and the laminated low-permeability resin are low, vulcanization occurs. When the post-pressure is released, negative pressure is applied to the layer, causing firing (destruction of the layer), resulting in insufficient performance as an air permeation prevention layer, and poor appearance. There is a problem.
- an object of the present invention is to provide a low-permeability resin layer when a low-permeability rubber laminate in which a low-permeability resin layer is laminated with at least one rubber layer is used as an air permeation prevention layer of a pneumatic tire.
- An object of the present invention is to provide a low-permeability rubber layered body that can effectively suppress the occurrence of fire and exhibit an excellent air pressure maintaining function.
- a low permeability resin having an air permeability coefficient of 0.5 X 10 cc 'cm no cm 2 sec sec cmHg or less and an average thickness d of 0.05 m ⁇ d ⁇ 1 0 ⁇ m
- a pneumatic tire used as an air permeation preventive layer is provided.
- the low-permeability rubber laminate in which the adhesive layer (C) is further interposed between the prepking-processed low-permeability resin layer (A) and the rubber layer (B), and for example, air A pneumatic tire used as an anti-permeation layer is provided.
- the laminate including the pre-tacking low-permeability resin layer and at least one rubber layer is used.
- firing of the low-permeability resin layer (A) can be effectively suppressed by pre-processing the low-permeability resin layer (A) of the laminate to provide a plurality of pre-tacking holes.
- Excellent air pressure retention function can be demonstrated.
- the inventors of the present invention have made a low-permeability resin layer (A) in which a specific amount of holes are made by pre-blocking the low-permeability resin layer (A).
- a specific amount of holes are made by pre-blocking the low-permeability resin layer (A).
- the rubber layer (B) and the low-permeability resin layer (A) can be provided with a minimum adhesion, when the tire is subjected to repeated dynamic deformation during running of the tire. However, to prevent the worst situation such as the inner liner dropping out be able to.
- Resin used as a low permeability resin layer (A) in the present invention air (measured at 3 0 in conformity with JISK 7 1 2 6) permeability coefficient of 0. 5 X 1 0 - 12 cc ⁇ cm / cm 2 ⁇ sec ⁇ cmHg or less, preferably 0 2 X 1 0 -. 12 in cc ⁇ cm / cm 2 ⁇ sec ⁇ cinHg or less of the resin, as the resin such as this, for example, polyolefin Nketon (P OK ), Polyvinyl alcohol (PVA), ethylene monovinyl alcohol (EVOH), nylon MXD 6, polyvinylidene chloride, polyacrylonitrile (PAN), and the like.
- P OK polyolefin Nketon
- PVA Polyvinyl alcohol
- EVOH ethylene monovinyl alcohol
- nylon MXD 6 polyvinylidene chloride
- PAN polyacrylonitrile
- the ethylene composition ratio is 50 mol% or less, more preferably 50 to 20 mol%, and the saponification degree is 90% or more. (Melting point) is more preferable from the viewpoint of gas barrier properties.
- the layer thickness of the low permeability resin (A) is 0.5 ⁇ m ⁇ d ⁇ 10 ⁇ m, preferably lm ⁇ d ⁇ 3 / im. If this layer thickness is thin, the desired air permeation prevention performance cannot be exhibited, and this is not preferable. On the other hand, if the layer thickness is thick, cracks will be generated and peeling will occur.
- the low permeability resin layer (A) is pre-tacked to provide a plurality of holes.
- the blocking holes (through holes) provided in the low-permeability resin layer (A) are preferably in an area ratio of 0.01 to 60%, more preferably 0.01 to 40%, more preferably Is from 0.1 to 20%, most preferably from 0.1 to 5%. If the ratio of pre-tucking holes is small, foaming from the layer (A) will occur when the pressure is released after vulcanizing the tire If the amount is too large, the desired air permeation prevention performance may not be exhibited.
- the method for forming the prepking hole in the low air permeability resin layer (A) according to the present invention there is no particular limitation on the method for forming the prepking hole in the low air permeability resin layer (A) according to the present invention, and a general method, for example, a stylus or punching machine can be used.
- a stylus or punching machine can be used.
- the size of the pleating hole but it is preferable to keep the size to 1 mm 2 or less in terms of appearance.
- At least one rubber layer laminated with the resin (A) layer is, for example, natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), halobuty rubber.
- One or more blend rubbers such as (X—I I R), ethylene propylene rubber (E PM, E PDM), and styrene elastomer (S B R, S B S) can be used.
- X—I I R ethylene propylene rubber
- E PM ethylene propylene rubber
- E PDM ethylene propylene rubber
- S B R, S B S styrene elastomer
- a three-layer structure in which the layer (A) is sandwiched between rubber layers can be mentioned, but this is not restrictive.
- the method for laminating the resin (A) layer and the rubber layer is not particularly limited, and can be a general method.
- the specific method is as follows. A laminate film consisting of two layers of a low-permeability resin (A), a thermoplastic resin composition that is in a pseudo-adhesive state, and a low-permeability resin (A) is produced, and this laminate film is pre-tucked with a needlestick or the like. . Next, the pre-bonded laminate film and the rubber composition are laminated in the order of thermoplastic resin Z low-permeability resin (A) / rubber composition, vulcanized, and the thermoplastic resin composition is peeled off to pre-process. It is possible to obtain a low-permeability rubber laminate in which the low-permeability resin (A) subjected to the knocking process and the rubber composition are laminated.
- the resin layer consisting of two layers of a low-permeability resin (A), a thermoplastic resin composition that is in a pseudo-adhesive state, and a low-
- a general adhesive layer (C) is interposed between (A) and the rubber layer (B).
- resin and rubber can be laminated.
- an epoxy group-containing styrene elastomer blended with a desired adhesive, a vulcanizing agent, a vulcanization accelerator, and the like can be used.
- the resin composition and rubber composition according to the present invention include any additive conventionally used in these compositions, for example, other reinforcing agents such as carbon black and silica (General additives such as fillers), vulcanization or crosslinking agents, vulcanization or crosslinking accelerators, various oils, anti-aging agents, plasticizers, etc. can be blended. Kneaded into a composition, which can be used for vulcanization or crosslinking. The blending amounts of these additives can be conventional conventional blending amounts as long as the object of the present invention is not violated.
- additives such as carbon black and silica
- thermoplastic resin Z low permeability resin (A) / adhesive / rubber composition This is used in place of the tire inner liner, rubber and rubber (so that the thermoplastic resin becomes the innermost surface of the tire), and after vulcanization, the thermoplastic resin is peeled off, and the pre-permeability low permeability resin A tire having (A) arranged on the innermost surface of the tire was produced.
- Comparative Example 1 and Comparative Example 3 were not pre-coated. After the indoor tire running test, a failure occurred from the fired portion of the low-permeability resin layer (A), resulting in poor appearance. In Comparative Example 2, since the layer (A) was too thick, after the indoor tire running test, the layer (A) was cracked and peeled, resulting in poor appearance.
- Table I shows the thermoplastic resins used in the present invention. Table I: Thermoplastic resin
- This value was defined as the pressure drop rate per month (air leakage rate) (% / month).
- Table II below shows the low permeability resin (A) used in the present invention
- Table III shows the composition of the rubber composition laminated with the low permeability resin (A)
- Table IV shows the composition of the adhesive
- Table V shows examples and comparative examples.
- Air permeability coefficient measurement method (Gas permeability test method)
- Measurements were performed in accordance with JISK 7 1 2 6 “Method for testing excess gas permeability of plastic films and sheets”.
- the test is a method of measuring the permeability of any gas within the specification range of the test equipment used. Keep one side (low pressure side) separated by the test piece in a vacuum and introduce the test gas to the other side (high pressure side). Gas permeation by increasing pressure on the low pressure side It was obtained by A method (differential pressure method) that measures the degree.
- the gas permeability coefficient was calculated from the permeability.
- the pneumatic tire It can be used as an inner liner, other tire parts (for example, side parts), and a low-permeability hose.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07742119.6A EP2008809B1 (en) | 2006-04-18 | 2007-04-16 | Layered low-permeability rubber product and pneumatic tire comprising the same |
JP2008512173A JP5071383B2 (ja) | 2006-04-18 | 2007-04-16 | 低透過性ゴム積層体及びそれを用いた空気入りタイヤ |
US12/297,683 US20090065118A1 (en) | 2006-04-18 | 2007-04-16 | Low-permeability rubber laminate and pneumatic tire using the same |
CN2007800135628A CN101421102B (zh) | 2006-04-18 | 2007-04-16 | 低透过性橡胶叠层体和使用了该低透过性橡胶叠层体的充气轮胎 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006114815 | 2006-04-18 | ||
JP2006-114815 | 2006-04-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007123220A1 true WO2007123220A1 (ja) | 2007-11-01 |
Family
ID=38625119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/058684 WO2007123220A1 (ja) | 2006-04-18 | 2007-04-16 | 低透過性ゴム積層体及びそれを用いた空気入りタイヤ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090065118A1 (ja) |
EP (1) | EP2008809B1 (ja) |
JP (1) | JP5071383B2 (ja) |
CN (1) | CN101421102B (ja) |
WO (1) | WO2007123220A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100047586A1 (en) * | 2008-08-25 | 2010-02-25 | The Yokohama Rubber Co., Ltd. | Modified ethylene-vinyl alcohol copolymer, gas barrier resin, and molded article of the same |
WO2012008183A1 (ja) | 2010-07-15 | 2012-01-19 | 横浜ゴム株式会社 | 積層体およびそれを用いた空気入りタイヤ |
JP2013082161A (ja) * | 2011-10-12 | 2013-05-09 | Bridgestone Corp | 積層体の製造方法、積層体及びインナーライナー |
JP7180151B2 (ja) | 2018-07-09 | 2022-11-30 | 横浜ゴム株式会社 | 空気入りタイヤ |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4858654B1 (ja) * | 2010-06-08 | 2012-01-18 | 横浜ゴム株式会社 | 空気入りタイヤおよび積層体 |
US8454778B2 (en) | 2010-11-15 | 2013-06-04 | Ramendra Nath Majumdar | Pneumatic tire with barrier layer and method of making the same |
WO2014164054A1 (en) | 2013-03-13 | 2014-10-09 | Basf Se | Inner liner for a pneumatic tire assembly |
JP6232738B2 (ja) * | 2013-05-10 | 2017-11-22 | 横浜ゴム株式会社 | 空気入りタイヤ |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01314164A (ja) | 1988-04-11 | 1989-12-19 | Hercules Inc | 空気入り物品用気体遮断構造物 |
JPH07308984A (ja) * | 1994-05-19 | 1995-11-28 | Bridgestone Corp | タイヤ成型用ゴムシートおよびそれを用いたタイヤ成型方法 |
JPH1016082A (ja) * | 1996-07-04 | 1998-01-20 | Yokohama Rubber Co Ltd:The | 空気入りタイヤおよびその製造方法 |
JPH10264607A (ja) * | 1997-03-24 | 1998-10-06 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
JP2004262183A (ja) * | 2003-03-04 | 2004-09-24 | Yokohama Rubber Co Ltd:The | タイヤ成形工程におけるシート状材料のエアー抜き穴成形方法及びそのエアー穴成形装置 |
JP2005238654A (ja) * | 2004-02-26 | 2005-09-08 | Sumitomo Rubber Ind Ltd | 生タイヤの製造方法 |
JP2005343217A (ja) * | 2004-05-31 | 2005-12-15 | Bridgestone Corp | 応急用空気入りタイヤ |
JP2005343218A (ja) * | 2004-05-31 | 2005-12-15 | Bridgestone Corp | ランフラットタイヤ |
JP2006256558A (ja) * | 2005-03-18 | 2006-09-28 | Bridgestone Corp | 重荷重用タイヤ |
JP2006256557A (ja) * | 2005-03-18 | 2006-09-28 | Bridgestone Corp | 重荷重用タイヤ |
WO2007037541A1 (ja) * | 2005-09-30 | 2007-04-05 | The Yokohama Rubber Co., Ltd. | 低空気透過性樹脂/ゴム組成物の低空気透過性ゴム積層体及びその製造方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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ES2305385T3 (es) * | 2002-11-13 | 2008-11-01 | Bridgestone Corporation | Revestimiento interno para cubierta de neumatico y cubierta de neumatico. |
-
2007
- 2007-04-16 CN CN2007800135628A patent/CN101421102B/zh not_active Expired - Fee Related
- 2007-04-16 US US12/297,683 patent/US20090065118A1/en not_active Abandoned
- 2007-04-16 WO PCT/JP2007/058684 patent/WO2007123220A1/ja active Application Filing
- 2007-04-16 JP JP2008512173A patent/JP5071383B2/ja not_active Expired - Fee Related
- 2007-04-16 EP EP07742119.6A patent/EP2008809B1/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01314164A (ja) | 1988-04-11 | 1989-12-19 | Hercules Inc | 空気入り物品用気体遮断構造物 |
JPH07308984A (ja) * | 1994-05-19 | 1995-11-28 | Bridgestone Corp | タイヤ成型用ゴムシートおよびそれを用いたタイヤ成型方法 |
JPH1016082A (ja) * | 1996-07-04 | 1998-01-20 | Yokohama Rubber Co Ltd:The | 空気入りタイヤおよびその製造方法 |
JPH10264607A (ja) * | 1997-03-24 | 1998-10-06 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
JP2004262183A (ja) * | 2003-03-04 | 2004-09-24 | Yokohama Rubber Co Ltd:The | タイヤ成形工程におけるシート状材料のエアー抜き穴成形方法及びそのエアー穴成形装置 |
JP2005238654A (ja) * | 2004-02-26 | 2005-09-08 | Sumitomo Rubber Ind Ltd | 生タイヤの製造方法 |
JP2005343217A (ja) * | 2004-05-31 | 2005-12-15 | Bridgestone Corp | 応急用空気入りタイヤ |
JP2005343218A (ja) * | 2004-05-31 | 2005-12-15 | Bridgestone Corp | ランフラットタイヤ |
JP2006256558A (ja) * | 2005-03-18 | 2006-09-28 | Bridgestone Corp | 重荷重用タイヤ |
JP2006256557A (ja) * | 2005-03-18 | 2006-09-28 | Bridgestone Corp | 重荷重用タイヤ |
WO2007037541A1 (ja) * | 2005-09-30 | 2007-04-05 | The Yokohama Rubber Co., Ltd. | 低空気透過性樹脂/ゴム組成物の低空気透過性ゴム積層体及びその製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2008809A4 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100047586A1 (en) * | 2008-08-25 | 2010-02-25 | The Yokohama Rubber Co., Ltd. | Modified ethylene-vinyl alcohol copolymer, gas barrier resin, and molded article of the same |
US20130123428A1 (en) * | 2008-08-25 | 2013-05-16 | The Yokohama Rubber Col, Ltd. | Method for Preparing a Modified Ethylene-Vinyl Alcohol Copolymer |
US8969475B2 (en) | 2008-08-25 | 2015-03-03 | The Yokohama Rubber Co., Ltd. | Method for preparing a modified ethylene-vinyl alcohol copolymer |
WO2012008183A1 (ja) | 2010-07-15 | 2012-01-19 | 横浜ゴム株式会社 | 積層体およびそれを用いた空気入りタイヤ |
US9272491B2 (en) | 2010-07-15 | 2016-03-01 | The Yokohama Rubber Co., Ltd. | Laminated body and pneumatic tyre using same |
US9969217B2 (en) | 2010-07-15 | 2018-05-15 | The Yokohama Rubber Co., Ltd. | Laminated body and pneumatic tyre using same |
JP2013082161A (ja) * | 2011-10-12 | 2013-05-09 | Bridgestone Corp | 積層体の製造方法、積層体及びインナーライナー |
JP7180151B2 (ja) | 2018-07-09 | 2022-11-30 | 横浜ゴム株式会社 | 空気入りタイヤ |
Also Published As
Publication number | Publication date |
---|---|
JPWO2007123220A1 (ja) | 2009-09-10 |
EP2008809B1 (en) | 2013-12-25 |
JP5071383B2 (ja) | 2012-11-14 |
EP2008809A1 (en) | 2008-12-31 |
CN101421102B (zh) | 2012-05-23 |
US20090065118A1 (en) | 2009-03-12 |
CN101421102A (zh) | 2009-04-29 |
EP2008809A4 (en) | 2012-01-18 |
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