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公开(公告)号：US20240375438A1
公开(公告)日：2024-11-14
申请号：US18656559
申请日：2024-05-06
Applicant: NOKIAN RENKAAT OYJ
Inventor： Noora KEMPPAINEN , Jouko ILOMÄKI , Alexandra SHAKUN
Abstract: A pneumatic tyre contains a structure wherein a thermally adaptive underlayer is positioned beneath a tread layer. The thermally adaptive underlayer is based on a polymer system selected to contain elastomers with distinct glass transition temperatures sufficiently far apart and which exhibit low miscibility towards each other. Due to the tyre construction and the thermally adaptive underlayer, while driving a vehicle, performance characteristics of the pneumatic tyre adapt to the driving conditions on the road based on the temperature experienced by the thermally adaptive underlayer. This may be of particularly relevant during colder seasons, such as for a winter tyre, wherein the thermally adaptive underlayer may be used for an improved tread layer and for a studded pneumatic tyre, wherein the composition and thickness of the thermally adaptive underlayer may be used to control the dynamic impact of the stud on a driving surface, when the tyre is in motion.
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公开(公告)号：US20240375457A1
公开(公告)日：2024-11-14
申请号：US18657589
申请日：2024-05-07
Applicant: NOKIAN RENKAAT OYJ
Inventor： Mikko LIUKKULA , Lauri HEIKKINEN , Aappo LAITILA , Noora KEMPPAINEN , Alexandra SHAKUN , Jouko ILOMÄKI , Jarkko KULMALA
Abstract: A tyre (200) includes a tread (210) and multiple studs (100) in the tread (210) such that at least pins (110) of the studs (100) are exposed on the tread (210). The tyre (200) is configured such that a load index (LI) of the tyre (200) as defined in The European Tyre and Rim Technical Organization Standards Manual (2023) table G.7 is from eighty-six to one hundred sixteen (from 86 to 116). The tyre (200) is further configured such that a road wear of the tyre (200) as measured according to the standard SFS7503:2022:en is less than the value calculatable by the polynomial formula −0.000139×LI2+0.0431×LI−1.90.
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公开(公告)号：US20240375452A1
公开(公告)日：2024-11-14
申请号：US18657518
申请日：2024-05-07
Applicant: Nokian Renkaat Oyj
Inventor： Mikko LIUKKULA , Jouko ILOMÄKI , Lauri HEIKKINEN , Noora KEMPPAINEN , Aappo LAITILA , Alexandra SHAKUN
Abstract: The invention relates to a method for manufacturing a studded pneumatic tire for a vehicle, the tire comprising studs, at least one ply, at least one metal belt, a cap layer forming at least part of a running surface of the studded pneumatic tire, an underlayer made of a first rubber compound, and an intermediate layer made of a second rubber compound, the intermediate layer being arranged, at least partially, between the underlayer and the cap layer, wherein the method comprises steps of forming an annular belt comprising a metal belt, the underlayer, the intermediate layer, and the cap layer, then arranging the annular belt onto an annular carcass comprising the at least one ply to form a preform, vulcanizing the preform, and installing studs. The invention further relates to a studded pneumatic tire for a vehicle.
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公开(公告)号：US20240375439A1
公开(公告)日：2024-11-14
申请号：US18657676
申请日：2024-05-07
Applicant: NOKIAN RENKAAT OYJ
Inventor： Mikko LIUKKULA , Jouko ILOMÄKI , Lauri HEIKKINEN , Noora KEMPPAINEN , Aappo LAITILA , Alexandra SHAKUN
Abstract: A pneumatic tyre contains a structure wherein a thermally adaptive underlayer is positioned beneath a tread layer and an intermediate layer. The thermally adaptive underlayer is based on a polymer system that containing elastomers with distinct glass transition temperatures sufficiently far apart which exhibit low miscibility towards each other. Due to the tyre construction and the thermally adaptive underlayer, while driving a vehicle, the performance characteristics of the pneumatic tyre adapt to the driving conditions on the road based on the temperature experienced by the thermally adaptive underlayer. This is of particular relevance for a winter tyre, wherein the thermally adaptive underlayer may be used to design an improved tread layer and for a studded pneumatic tyre, wherein the composition and thickness of the thermally adaptive underlayer may control dynamic impact of the stud on a driving surface, when the tyre is in motion.
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