WO2023113516A1 - 실란트층 및 흡음재층을 포함하는 타이어 - Google Patents
실란트층 및 흡음재층을 포함하는 타이어 Download PDFInfo
- Publication number
- WO2023113516A1 WO2023113516A1 PCT/KR2022/020512 KR2022020512W WO2023113516A1 WO 2023113516 A1 WO2023113516 A1 WO 2023113516A1 KR 2022020512 W KR2022020512 W KR 2022020512W WO 2023113516 A1 WO2023113516 A1 WO 2023113516A1
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- WO
- WIPO (PCT)
- Prior art keywords
- tire
- porous material
- absorbing material
- layer
- sound
- 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.)
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Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
-
- 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/005—Reinforcements made of different materials, e.g. hybrid or composite cords
-
- 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/12—Puncture preventing arrangements
- B60C19/122—Puncture preventing arrangements disposed inside of the inner liner
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3223—Materials, e.g. special compositions or gases
Definitions
- the present invention relates to a tire including a sealant layer and a sound absorbing material layer, and more particularly, to a tire capable of self-sealing when a puncture occurs and having noise reduction performance.
- the sound absorbing material when the sound absorbing material is mounted on another part, in particular, when the sound absorbing material is mounted on the sidewall part, the sound absorbing material may be damaged due to interference in the tire-wheel coupling. Similarly, even when a sound-absorbing material is mounted on a wheel, the noise reduction performance is significantly lowered and the function is not functioning properly.
- An object of the present invention is to solve the problems of the prior art, and while being able to self-seal when a puncture occurs by a sealant layer applied to the inner surface of a tire, it has a resonance sound reducing performance by including a sound absorbing material, and a nail is attached to the tire and sealant.
- An object of the present invention is to provide a tire capable of preventing fine pieces of the sound absorbing material from deteriorating the function of the sealant and maintaining noise reduction performance even when the sound absorbing material reaches the sound absorbing material through the hole.
- a sound absorbing material layer positioned inside the tire, and a sealant layer positioned between the inner surface of the tire and the sound absorbing material layer and applied to the inner surface of the tire, wherein the sound absorbing material layer is closed
- a tire comprising a first porous material having cells, and a second porous material having open cells and having an average pore size of 1,200 ⁇ m to 2,400 ⁇ m.
- the sound absorbing material layer further includes a third porous material having open cells laminated on the second porous material, and one side of the first porous material is attached to the inner surface of the tire by the sealant layer, ,
- the first porous material may be laminated on one side of the second porous material, and the third porous material may be laminated on the other side of the second porous material.
- the third porous material may have an average pore size of 100 ⁇ m to 1,200 ⁇ m.
- the second porous material has a density of 25 kg/m 3 to 40 kg/m 3 , a hardness of 10 kgf to 20 kgf, a tensile strength of 0.8 kgf/cm 2 or more, and an elongation of 70% or more.
- the porous material may have a density of 20 kg/m 3 to 40 kg/m 3 , a hardness of 10 kgf to 20 kgf, a tensile strength of 0.8 kgf/cm 2 or more, and an elongation of 70% or more.
- the thickness of the sound-absorbing material layer is 20 mm to 60 mm
- the thickness of the first porous material is 1% to 60% by length of the total thickness of the sound-absorbing material layer
- the thickness of the second porous material is the total thickness of the sound-absorbing material layer.
- the thickness of the third porous material may be 10 length% to 70 length% of the total thickness of the sound absorbing material layer.
- the tire of the present invention can self-seal when a puncture occurs due to the sealant layer applied to the inner surface of the tire, has noise reduction performance by including a sound absorbing material, and even when a nail penetrates the tire and the sealant to reach the sound absorbing material, the sound absorbing material is finely tuned. It is possible to prevent fragments from deteriorating the function of the sealant and to maintain the noise reduction performance.
- FIG. 1 is a cut perspective view of a pneumatic tire according to an embodiment of the present invention.
- FIG. 2 is a cut perspective view of a pneumatic tire according to another embodiment of the present invention.
- the present invention is intended to combine two technologies so that the two performances can be simultaneously expressed.
- a special polymeric material is applied to the inner liner inside the tire, so when a nail or sharp foreign object punctures the tire tread, the special polymeric material immediately seals the puncture and air-conditions the tire. It is a tire that prevents leakage and allows you to get off the road while driving and drive without having to replace the tire.
- a foam that is, a porous material having a plurality of pores, is mounted therein to reduce the resonance generated when the air layer inside the tire vibrates due to the vibration generated on the tire road surface during driving.
- Electric vehicles do not have an internal combustion engine inside the vehicle, so the engine noise of the vehicle disappears, so the sound of tires rolling and other noises become relatively large.
- a general sound absorbing material is manufactured by foaming a material such as polyurethane, so that a plurality of fine pores are densely distributed.
- this sound-absorbing material is attached on top of the sealant applied to the inner liner of the tire, when a foreign substance such as a nail penetrates the tire, it reaches the sound-absorbing material layer, and when the nail is pulled out, the fine pieces of the sound-absorbing material adhere to each other due to the sticky property of the sealant.
- the fine pieces of the sound-absorbing material act as a factor that impairs the sealing ability of the sealant, or the sound-absorbing material layer in which fine pores are densely formed on the sealant layer and the upper layer of the sealant are physically bonded densely, reducing the sealant's fluidity. function may be impaired.
- the sound absorbing material is placed in a position other than the inner liner where the sealant is not applied or wrapped around the wheel, the sound absorbing performance of the sound absorbing material may be significantly deteriorated, and even when the tire is mounted on the wheel, it may interfere. and may cause problems in use.
- the tire of the present invention includes a sound absorbing material layer attached to the inner surface of the tire and a sealant layer disposed between the inner surface of the tire and the sound absorbing material layer, the sound absorbing material layer comprising a first porous material having closed cells, and and a second porous material having open cells and having an average pore size of 1,200 ⁇ m to 2,400 ⁇ m.
- FIG. 1 is a cut perspective view of a pneumatic tire according to an embodiment of the present invention.
- the tire 1 according to the present invention, the sound absorbing material layer 3 located inside the tire 1, and located between the inner surface of the tire 1 and the sound absorbing material layer 3, the tire ( 1) It includes a sealant layer 2 applied to the inner surface.
- the sealant layer 2 is applied to the inner surface of the tire 1, and when the tire 1 includes an inner liner on the inner side, the sealant layer 2 may generally be positioned on the inner liner.
- the first layer when the second layer is positioned above the first layer, the first layer is closer to the inner surface of the tire 1 than the second layer. position, the second layer means to be located on the other side of one side facing the inner side of the tire 1 of the first layer.
- the sealant layer 2 may be applied to some or all of the inner surface of the tire 1 , and preferably only to the inner surface corresponding to the ground contact surface of the tire 1 . This is because the portion of the tire 1 mainly penetrated by foreign substances is the ground surface of the tire 1 . Accordingly, the width of the sealant layer 2 may be 100 length% to 120 length% with respect to the tread width of the tire 1 .
- the thickness of the sealant layer 2 may be 2 mm to 8 mm.
- the thickness of the sealant layer 2 is within the range, it is possible to reliably self-seal against a puncture caused by a nail or protrusion without affecting the flow characteristics of the sealant.
- the sealant layer 2 may be prepared by crosslinking a sealant composition including a rubber component or without crosslinking a sealant composition including a crosslinked rubber component.
- the sealant composition is not limited as long as it has adhesiveness, and a conventional rubber composition used for puncture sealing of the tire 1 can be used.
- a sealant composition containing butyl-based rubber as a main component may be used, and a sealant composition containing a natural rubber-based compound, a silicone-based compound, a urethane-based compound, a styrene-based compound, or an ethylene-based compound may also be used. .
- butyl rubber butyl rubber (IIR) or halogenated butyl rubber (X-IIR) such as brominated butyl rubber (Br-IIR) and chlorinated butyl rubber (Cl-IIR) may be used.
- X-IIR halogenated butyl rubber
- brominated butyl rubber Br-IIR
- chlorinated butyl rubber Cl-IIR
- the sealant composition includes natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene rubber (SBR), styrene-isoprene-butadiene rubber (SIBR), ethylene propylene diene rubber (EPDM), chloroprene rubber (CR), di-linked rubber such as acrylonitrile butadiene rubber (NBR), and the like may be further included.
- NR natural rubber
- IR isoprene rubber
- BR butadiene rubber
- SBR styrene-butadiene rubber
- SIBR styrene-isoprene-butadiene rubber
- EPDM ethylene propylene diene rubber
- CR chloroprene rubber
- di-linked rubber such as acrylonitrile butadiene rubber (NBR), and the like may be further included.
- the content of butyl rubber is 90% by weight or more with respect to 100% by weight of
- the sealant composition may further include polyisobutylene, and the polyisobutylene may have a weight average molecular weight of 1,000 g/mol to 10,000 g/mol.
- polyisobutylene may be included in an amount of 100 parts by weight to 500 parts by weight based on 100 parts by weight of the rubber component. If the content of polyisobutylene is less than 100 parts by weight, flowability of the material may deteriorate, and if it exceeds 500 parts by weight, shape stability of the material may deteriorate.
- the sealant composition may further include a liquid polymer.
- the liquid polymer is liquid polybutene, liquid polyisobutene, liquid polyisoprene, liquid polybutadiene, liquid poly ⁇ -olefin, liquid isobutylene, liquid ethylene ⁇ -olefin copolymer, liquid ethylene propylene copolymer, liquid ethylene butylene copolymers and the like.
- the liquid polymer may be included in an amount of 50 parts by weight to 1,000 parts by weight, and more specifically, 150 parts by weight to 500 parts by weight, based on 100 parts by weight of the rubber component. If the content of the liquid polymer is less than 50 parts by weight, the flowability of the material may decrease, and if it exceeds 1,000 parts by weight, the shape stability of the material may decrease.
- the sealant composition may further include an inorganic additive.
- the inorganic additive is for adjusting the reinforcing properties of the sealant composition, and may be selected from the group consisting of carbon black, silica, calcium carbonate, calcium silicate, magnesium oxide, aluminum oxide, barium sulfate, talc, mica, and mixtures thereof. there is.
- the inorganic additive may be included in an amount of 10 parts by weight to 100 parts by weight, preferably 30 parts by weight to 60 parts by weight, based on 100 parts by weight of the rubber component.
- the sealant composition may further include an additive selected from the group consisting of a vulcanization agent, a vulcanization accelerator, a vulcanization accelerator, an adhesive, and mixtures thereof.
- the vulcanizing agent aids crosslinking of the sealant composition and may be included in an amount of 1 to 20 parts by weight, preferably 5 to 10 parts by weight, based on 100 parts by weight of the rubber component.
- sulfur-based vulcanizing agents As the vulcanizing agent, sulfur-based vulcanizing agents, organic peroxides, bismaleimides, benzoquinone derivatives, phenolic vulcanizing agents, and metal oxide oxides such as magnesium oxide can be used.
- sulfur-based vulcanizing agent inorganic vulcanizing agents such as powdered sulfur (S), insoluble sulfur (S), precipitated sulfur (S), and colloidal sulfur may be used.
- Vulcanization accelerators for accelerating vulcanization include sulfenamide-based, thiazole-based, thiuram-based, thiourea-based, guanidine-based, dithiocarbamic acid-based, aldehyde-amine-based, aldehyde-ammonia-based, imidazoline-based, xanthate-based And any one selected from the group consisting of combinations thereof may be used.
- the vulcanization accelerator may be included in an amount of 0 to 10 parts by weight, preferably 3 to 5 parts by weight, based on 100 parts by weight of the rubber component.
- the vulcanization accelerator is a compounding agent used in combination with a vulcanization accelerator to completely promote its effect, and zinc oxide and stearic acid may be used together.
- zinc oxide and stearic acid may be used together, they may be used in amounts of 1 to 5 parts by weight and 0.5 parts to 3 parts by weight based on 100 parts by weight of the rubber component, respectively, to serve as an appropriate vulcanization accelerator.
- adhesives for improving the adhesion of the sealant composition include natural resins such as phenolic resins, rosin resins, or terpene resins, petroleum resins, coal tar, or alkyl phenolic resins.
- a synthetic resin type may be used.
- the adhesive may be included in an amount of 0 to 10 parts by weight, preferably 3 to 5 parts by weight, based on 100 parts by weight of the rubber component.
- the sound absorbing material layer 3 is for reducing resonant noise generated in the inner space of the tire 1, and the sound absorbing material layer 3 may have a sheet shape extending in the circumferential direction of the tire 1. That is, the sound absorbing material layer 3 may extend along the circumferential direction of the tire 1 in a sheet shape, and both ends may meet each other to form a ring shape like the tire 1 .
- the sound absorbing material layer 3 has a thickness of 20 mm to 60 mm, more specifically 30 mm to 60 mm, and may have a width (width) of 10% to 120% with respect to the tread width of the tire 1. . If the thickness of the sound-absorbing material layer (3) is less than 35 mm, the noise reduction performance may deteriorate, and if it exceeds 60 mm, the sound-absorbing material may be worn away by friction with the rim surface facing the sound-absorbing material inside the tire (1) during driving. can
- the sound absorbing material layer 3 includes a second porous material 31 having open cells and having an average pore size of 1,200 ⁇ m to 2,400 ⁇ m.
- the average pore size of the second porous material 31 is larger than the average pore size of porous materials conventionally used as sound absorbing materials, thereby reducing the specific surface area between the sealant layer 2 and the sound absorbing material layer 3. It improves the flowability of the sealant, and even when foreign matter such as nails penetrates the tire 1 and the sealant layer 2 and reaches the sound absorbing material layer 3, the specific surface area of attachment of the second porous material 31 to the surface of the nail It is possible to prevent the fine pieces of the second porous material 31 from deteriorating the function of the sealant and to maintain the noise reduction performance.
- the average pore size of the second porous material 31 is less than 1,200 ⁇ m, the flowability of the sealant in contact with the surface may deteriorate, and if it exceeds 2,400 ⁇ m, durability of the sound absorbing material during driving may decrease.
- the porous material may be any one selected from the group consisting of porous nonwoven fabric, porous foam, and laminates thereof.
- the porous non-woven fabric may be a polyester-based non-woven fabric or a polystyrene-based non-woven fabric
- the porous foam may be an ether-based polyurethane foam, which is a polyurethane foam made from polyether polyol, or an ester-based polyurethane foam, which is a polyurethane foam made from polyester polyol.
- It can be rubber foam such as foam, polyester polyether polyol-based polyurethane foam, ether/ester polyurethane foam, synthetic resin foam such as polyethylene foam, ethylene propylene rubber foam (EPDM foam), and nitrile rubber foam (NBR foam).
- EPDM foam ethylene propylene rubber foam
- NBR foam nitrile rubber foam
- Polyurethane foam can generally be prepared by urethane reaction of a polyisocyanate compound and a polyhydroxy compound.
- the sound absorbing material layer 3 may further include a third porous material 32 having open cells laminated on the second porous material 31 .
- FIG. 2 is a cut perspective view of a pneumatic tire according to another embodiment of the present invention, showing a case in which a third porous material 32 is further included.
- one side of the second porous material 31 is attached to the inner side of the tire 1 by the sealant layer 2, and the other side of the second porous material 31 is attached to the third porous material. (32) is stacked.
- the third porous material 32 has open cells and has an average pore size of 100 ⁇ m to 1,200 ⁇ m, or more particularly, 300 ⁇ m to 1,000 ⁇ m.
- the average pore size of the third porous material 32 is smaller than the average pore size of the second porous material 31 . Accordingly, the average pore size of the second porous material 31 is relatively larger than that of the third porous material 32, thereby contributing to noise reduction while minimizing interference with the fluidity of the sealant layer 2, and the third porous material 32 ) may have a greater noise reduction performance than the second porous material 31 because the average pore size is relatively smaller than that of the second porous material 31 .
- the second porous material 31 has a density of 25 kg/m 3 to 40 kg/m 3 , a hardness of 10 kgf to 20 kgf, a tensile strength of 0.8 kgf/cm 2 or more, and an elongation of 70% or more.
- the density of the second porous material 31 is less than 25 kg/m 3 , durability may deteriorate, and if it exceeds 40 kg/m 3 , the weight of the sound absorbing material may increase, which may affect tire performance.
- the hardness of the second porous material 31 is less than 10 kgf or greater than 20 kgf, processability may deteriorate.
- the tensile strength of the second porous material 31 is less than 0.8 kgf/cm 2 , durability may be deteriorated, and when the elongation rate of the second porous material 31 is less than 70%, durability may be deteriorated.
- the third porous material 32 may have a density of 20 kg/m 3 to 40 kg/m 3 , a hardness of 10 kgf to 20 kgf, a tensile strength of 0.8 kgf/cm 2 or more, and an elongation of 70% or more. .
- the density of the third porous material 32 is less than 20 kg/m 3 , durability may deteriorate, and if it exceeds 40 kg/m 3 , weight may increase, which may affect tire performance.
- the hardness of the third porous material 32 is less than 10 kgf or greater than 20 kgf, processability may deteriorate.
- the tensile strength of the third porous material 32 is less than 0.8 kgf/cm 2 , durability may be deteriorated, and when the elongation rate of the third porous material 32 is less than 70%, durability may be deteriorated.
- the sound absorbing material layer 3 may further include a first porous material 30 having closed cells between the second porous material 31 and the sealant layer 2 .
- the first porous material 30 has closed cells, the sound absorbing material layer 3 and the sealant layer 2 are separated so that the sealant permeates into the pores of the sound absorbing material layer 3 to block the pores.
- the total thickness of the sound absorbing material layer 3 is 20 mm to 60 mm
- the thickness of the first porous material 30 is 1% to 60% by length of the total thickness of the sound absorbing material layer
- the second porous material 31 The thickness is 30 length% to 90 length% of the total thickness of the sound absorbing material layer
- the thickness of the third porous material 32 may be 10 length% to 70 length% of the total thickness of the sound absorbing material layer.
- the thickness of the first porous material 30 is 2% to 20% by length of the total thickness of the sound absorbing material layer
- the thickness of the second porous material 31 is 30% to 90% by length of the total thickness of the sound absorbing material layer
- the thickness of the third porous material 32 may be 30% to 60% by length of the total thickness of the sound absorbing material layer.
- the thickness of the first porous material 30 is less than 1 length% of the total thickness of the sound absorbing material layer 3, there may be a problem in that the sound absorbing material layer is destroyed during driving due to the thin thickness and the performance of sealing pores is not exhibited.
- the length % is exceeded, there may be a problem in that performance of the second porous material 31 and the third porous material 32 is deteriorated.
- the penetrating nail touches the third porous material 32, and when the nail falls out, the fine sound absorbing material piece is dragged and self-sealing performance , and in the case of 100 length%, noise reduction performance may be lowered than in the case of less than 100 length%.
- the thickness of the third porous material 32 is less than 10 length% of the total thickness of the sound-absorbing material layer 3, there may be a problem with durability of the sound-absorbing material layer during driving, and if it exceeds 70 length%, the performance of the sound-absorbing material layer is not expressed. There may be a problem that doesn't.
- the first porous material 30 to the third porous material 32 can be attached in a variety of ways.
- the second porous material 31 may be attached to the first porous material 30 and the third porous material 32 using an adhesive or a double-sided adhesive tape.
- the first porous material 30 and the third porous material 32 have different average pore sizes or densities, but descriptions of materials and the like are the same as those of the second porous material 31, so repeated descriptions are omitted.
- the present invention molds the sound-absorbing material layer 3 into two layers, and applies a porous material having the same pore size as the conventional one to the upper layer facing the outside of the tire to maintain noise performance and maintain the lower contact with the sealant layer 2.
- the layer increases the pores of the porous material to reduce the specific surface area between the sealant layer 2 and the sound absorbing material layer 3, thereby improving the flowability of the sealant layer 2.
- the specific surface area of the nail surface and the sound absorbing material layer 3 is reduced, so that fine pieces of porous material are formed in the sealant layer.
- the function of (2) cannot be reduced.
- the present invention is a first porous material 30 having closed pores in the sound absorbing material layer 3 in contact with the sealant layer 2 while placing the sound absorbing material layer 3 on a layer below the sealant layer 2 as in the conventional method is attached to prevent the sealant material from entering between the pores of the sound-absorbing material layer 3 during driving of the tire 1, thereby improving the flowability of the sealant layer 2, and nailing the tire 1 to the sealant layer ( 2), a technique for maintaining the function of the existing sealant layer 2 even if it penetrates the first porous material 30 and reaches the second porous material 31 is implemented.
- a first porous material and a second porous material having properties shown in Table 1 below were prepared.
- Second porous material First porous material cell shape - open cell open cell closed cell density kg/m 3 28.8 29.5 35 Hardness (ILD25%) kgf 12.46 17.7 15 tensile strength kgf/cm 2 1.31 0.96 1.5 elongation rate % 248.5 83.29 150 average pore size ⁇ m 750 1850 100
- a sealant composition was prepared by mixing 100 parts by weight of butyl rubber, 400 parts by weight of polyisobutylene, 40 parts by weight of a carbon black additive, and 2 parts by weight of a sulfur-based vulcanizing agent, and applied to the inner surface of a 195/65R15 standard tire After that, a tire was manufactured by attaching a porous material as shown in Table 2 below.
- Comparative Example 1 is a case in which only the sealant layer is included without a sound absorbing material layer
- Comparative Example 2 is a sound absorbing material layer formed by attaching only the third porous material
- Comparative Example 3 is a case in which only the first porous material is attached to the sealant layer.
- the second porous material is adhered under the first porous material using an adhesive
- the third porous material is attached under the second porous material.
- a sound-absorbing material layer is formed by bonding and stacking porous materials using an adhesive.
- Example 1 Compared to Comparative Examples 2 and 3, the sealing effect was improved at room temperature, low temperature and high temperature, and the noise reduction effect was also good.
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Abstract
Description
| 단위 | 제 3 다공성 재료 | 제 2 다공성 재료 | 제 1 다공성 재료 | |
| 셀 형태 | - | 연속 기공(open cell) | 연속 기공(open cell) | 독립 기공(closed cell) |
| 밀도 | kg/m3 | 28.8 | 29.5 | 35 |
| 경도(ILD25%) | kgf | 12.46 | 17.7 | 15 |
| 인장강도 | kgf/cm2 | 1.31 | 0.96 | 1.5 |
| 신장율 | % | 248.5 | 83.29 | 150 |
| 평균 기공 크기 | ㎛ | 750 | 1850 | 100 |
| 제 1 다공성 재료(두께) | 제 2 다공성 재료(두께) | 제 3 다공성 재료(두께) | 흡음재층 전체(두께) | |
| 비교예 1 | - | - | - | - |
| 비교예 2 | - | - | 40 mm | 40 mm |
| 비교예 3 | 40 mm | - | - | 40 mm |
| 실시예 1 | 5 mm | 25 mm | 10 mm | 40 mm |
| 구분 | 조건 | 비교예 1 | 비교예 2 | 비교예 3 | 실시예 1 |
| 실링 효과 |
상온 | 100 % | 0 % | 95 % | 100 % |
| -30 ℃ 저온 | 100 % | 0 % | 80 % | 85 % | |
| 60 ℃ 고온 | 100 % | 0 % | 90 % | 95 % | |
| 소음(dB) | 1.386 | 0.521 | 0.834 | 0.567 | |
| 100% | 38% | 60% | 41% | ||
| 고속 내구 시험 | 부착유지 | 부착유지 | 부착유지 | 부착유지 | |
| 부착 내구 시험 | 부착유지 | 부착유지 | 부착유지 | 부착유지 | |
Claims (3)
- 타이어 내측면에 위치하는 흡음재층, 및상기 타이어 내측면과 상기 흡음재층 사이에 위치하며, 상기 타이어 내측면에 도포된 실란트층을 포함하며,상기 흡음재층은 독립 기공(closed cell)을 가지고 상기 실란트층에 의하여 상기 타이어 내측면에 부착되는 제1 다공성 재료;상기 제1 다공성 재료 위에 적층되고, 연속 기공(open cell)을 갖고, 평균 기공 크기가 1,200 ㎛ 내지 2,400 ㎛이며, 상기 흡음재층 전체 두께의 30 길이% 내지 90 길이%의 두께를 갖는 제2 다공성 재료; 및상기 제2 다공성 재료 위에 적층되며, 연속 기공(open cell)을 가지는 제3 다공성 재료를 포함하는 것을 특징으로 하는 타이어.
- 제1항에 있어서,상기 제3 다공성 재료는 평균 기공 크기가 100 ㎛ 내지 1,200 ㎛인 것인 타이어.
- 제1항에 있어서,상기 제2 다공성 재료는 밀도가 25 kg/m3 내지 40 kg/m3이고, 경도가 10 kgf 내지 20 kgf이고, 인장강도가 0.8 kgf/cm2 이상이고, 신장율이 70 % 이상이며,상기 제3 다공성 재료는 밀도가 20 kg/m3 내지 40 kg/m3이고, 경도가 10 kgf 내지 20 kgf이고, 인장강도가 0.8 kgf/cm2 이상이고, 신장율이 70 % 이상인 것인 타이어.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280082280.8A CN118401382A (zh) | 2021-12-15 | 2022-12-15 | 包括密封胶层及吸音材料层的充气轮胎 |
| US18/718,169 US20250050692A1 (en) | 2021-12-15 | 2022-12-15 | Tire comprising sealant layer and sound-absorbing material layer |
| EP22907983.5A EP4450302A4 (en) | 2021-12-15 | 2022-12-15 | TIRE COMPRISING A SEALING LAYER AND A LAYER OF SOUND-ABSORBING MATERIAL |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2021-0179448 | 2021-12-15 | ||
| KR1020210179448A KR102614701B1 (ko) | 2021-12-15 | 2021-12-15 | 실란트층 및 흡음재층을 포함하는 타이어 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023113516A1 true WO2023113516A1 (ko) | 2023-06-22 |
Family
ID=86773155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2022/020512 Ceased WO2023113516A1 (ko) | 2021-12-15 | 2022-12-15 | 실란트층 및 흡음재층을 포함하는 타이어 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250050692A1 (ko) |
| EP (1) | EP4450302A4 (ko) |
| KR (1) | KR102614701B1 (ko) |
| CN (1) | CN118401382A (ko) |
| WO (1) | WO2023113516A1 (ko) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20250010394A (ko) | 2023-07-12 | 2025-01-21 | 엘지디스플레이 주식회사 | 표시 장치 |
| KR20260000652A (ko) | 2024-06-25 | 2026-01-05 | 금호타이어 주식회사 | 흡음 수단이 구비된 타이어 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010280340A (ja) * | 2009-06-05 | 2010-12-16 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
| US20170015146A1 (en) * | 2014-03-31 | 2017-01-19 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tire |
| KR20200071299A (ko) * | 2018-12-11 | 2020-06-19 | 한국타이어앤테크놀로지 주식회사 | 실란트층 및 흡음재층을 포함하는 타이어 |
| JP2020097289A (ja) * | 2018-12-17 | 2020-06-25 | 株式会社ブリヂストン | 空気入りタイヤ |
| WO2021071847A1 (en) * | 2019-10-10 | 2021-04-15 | Dow Silicones Corporation | Self-sealing tires |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5347555B2 (ja) | 2008-05-09 | 2013-11-20 | 横浜ゴム株式会社 | タイヤ騒音低減装置及びこれを装着した空気入りタイヤ |
| DE102015212484A1 (de) | 2015-07-03 | 2017-01-05 | Continental Reifen Deutschland Gmbh | Fahrzeugluftreifen |
| JP7082027B2 (ja) | 2018-10-16 | 2022-06-07 | Toyo Tire株式会社 | 空気入りタイヤ |
| EP3831621B1 (en) * | 2019-12-04 | 2023-03-01 | The Goodyear Tire & Rubber Company | A pneumatic tire |
| EP3831620B1 (en) * | 2019-12-04 | 2023-04-19 | The Goodyear Tire & Rubber Company | A pneumatic tire |
| JP7532870B2 (ja) * | 2020-04-27 | 2024-08-14 | 住友ゴム工業株式会社 | 空気入りタイヤ |
-
2021
- 2021-12-15 KR KR1020210179448A patent/KR102614701B1/ko active Active
-
2022
- 2022-12-15 CN CN202280082280.8A patent/CN118401382A/zh active Pending
- 2022-12-15 WO PCT/KR2022/020512 patent/WO2023113516A1/ko not_active Ceased
- 2022-12-15 EP EP22907983.5A patent/EP4450302A4/en active Pending
- 2022-12-15 US US18/718,169 patent/US20250050692A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010280340A (ja) * | 2009-06-05 | 2010-12-16 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ |
| US20170015146A1 (en) * | 2014-03-31 | 2017-01-19 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tire |
| KR20200071299A (ko) * | 2018-12-11 | 2020-06-19 | 한국타이어앤테크놀로지 주식회사 | 실란트층 및 흡음재층을 포함하는 타이어 |
| JP2020097289A (ja) * | 2018-12-17 | 2020-06-25 | 株式会社ブリヂストン | 空気入りタイヤ |
| WO2021071847A1 (en) * | 2019-10-10 | 2021-04-15 | Dow Silicones Corporation | Self-sealing tires |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4450302A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4450302A4 (en) | 2025-10-22 |
| EP4450302A1 (en) | 2024-10-23 |
| KR20230090571A (ko) | 2023-06-22 |
| CN118401382A (zh) | 2024-07-26 |
| US20250050692A1 (en) | 2025-02-13 |
| KR102614701B1 (ko) | 2023-12-19 |
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