Tire, and tire manufacturing method

Patent metadata

Field	Value
Publication number	US-9415636-B2
Application number	US-201113818531-A
Country	US
Kind code	B2
Filing date	Aug 25, 2011
Priority date	Aug 25, 2010
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

Provided is a tire having at least a circular tire frame formed of a thermoplastic resin material, the tire including a reinforcing cord member that forms a reinforcing cord layer on the outer circumference of the tire frame, and the thermoplastic resin material including at least a polyamide-based thermoplastic elastomer.

First claim

The invention claimed is:

1. A tire comprising at least a circular tire frame formed of a thermoplastic resin material, wherein the tire frame has a bead portion contacting a rim that is separately provided with the tire frame,
the tire including a resin coated reinforcing cord member and a tread provided on the circular tire frame in this order, the resin coated reinforcing cord member forming a reinforcing cord layer wherein the resin coated reinforcing cord member is wound around an outer circumferences of the tire frame,
the thermoplastic resin material including at least a polyamide-based thermoplastic elastomer,
the content ratio of the polyamide-based thermoplastic elastomer in the thermoplastic resin material is 50% by mass to 100% by mass with respect to the total amount of the thermoplastic resin material;
the content of the resin material in the reinforcing cord layer is 20 mass % or more relative to the total amount of the materials that constitute the reinforcing cord layer excluding the reinforcing cord; and
the resin coated reinforcing cord member in the reinforcing cord layer is a cord member that is coated with a resin material of the same kind as the thermoplastic resin material that forms the tire frame; and
the tread is formed of a rubber, and the cord member does not directly come in contact with the rubber.

2. The tire according to claim 1 , wherein the resin coated reinforcing cord member is covered by a resin material over 20% or more of the surface.

3. The tire according to claim 1 , wherein the resin material of the resin coated reinforcing cord member is a resin other than vulcanized rubbers.

4. A tire comprising at least a circular tire frame formed of a thermoplastic resin material, wherein the tire frame has a bead portion contacting a rim that is separately provided with the tire frame,
the tire including a resin coated reinforcing cord member and a tread provided on the circular tire frame in this order, the resin coated reinforcing cord member forming a reinforcing cord layer wherein the resin coated reinforcing cord member is wound around an outer circumference of the tire frame,
the thermoplastic resin material including at least a polyamide-based thermoplastic elastomer and an elastomer other than the polyamide-based thermoplastic elastomer,
the total content of the polyamide-based thermoplastic elastomer and the elastomer other than the polyamide-based thermoplastic elastomer in the thermoplastic resin material is 50% by mass to 100% by mass with respect to the total amount of the thermoplastic resin material;
the content of the resin material in the reinforcing cord layer is 20 mass % or more relative to the total amount of the materials that constitute the reinforcing cord layer excluding the reinforcing cord; and
the resin coated reinforcing cord member in the reinforcing cord layer is a cord member that is coated with a resin material of the same kind as the thermoplastic resin material that forms the tire frame; and
the tread is formed of a rubber, and the cord member does not directly come in contact with the rubber.

5. A tire comprising at least a circular tire frame formed of a thermoplastic resin material, wherein the tire frame has a bead portion contacting a rim that is separately provided with the tire frame,
the tire including a resin coated reinforcing cord member and a tread provided on the circular tire frame in this order, the resin coated reinforcing cord member forming a reinforcing cord layer wherein the resin coated reinforcing cord member is wound around an outer circumference of the tire frame,
the thermoplastic resin material including at least a polyamide-based thermoplastic elastomer and a polyester-based thermoplastic elastomer,
the total content of the polyamide-based thermoplastic elastomer and the polyester-based thermoplastic elastomer in the thermoplastic resin material is 50 mass % to 100 mass % with respect to the total mass of the thermoplastic resin material;
the content of the resin material in the reinforcing cord layer is 20 mass % or more relative to the total amount of the materials that constitute the reinforcing cord layer excluding the reinforcing cord; and
the resin coated reinforcing cord member in the reinforcing cord layer is a cord member that is coated with a resin material of the same kind as the thermoplastic resin material that forms the tire frame; and
the tread is formed of a rubber, and the cord member does not directly come in contact with the rubber.

6. A tire comprising at least a circular tire frame formed of a thermoplastic resin material, wherein the tire frame has a bead portion contacting a rim that is separately provided with the tire frame,
the tire including a resin coated reinforcing cord member and a tread provided on the circular tire frame in this order, the resin coated reinforcing cord member forming a reinforcing cord layer wherein the resin coated reinforcing cord member is wound around an outer circumference of the tire frame,
the thermoplastic resin material including at least a polyamide-based thermoplastic elastomer and a rubber,
the total content of the polyamide-based thermoplastic elastomer and the rubber in the thermoplastic resin material is 50 mass % to 100 mass % with respect to the total amount of the thermoplastic resin material;
the content of the resin material in the reinforcing cord layer is 20 mass % or more relative to the total amount of the materials that constitute the reinforcing cord layer excluding the reinforcing cord; and
the resin coated reinforcing cord member in the reinforcing cord layer is a cord member that is coated with a resin material of the same kind as the thermoplastic resin material that forms the tire frame; and
the tread is formed of a rubber, and the cord member does not directly come in contact with the rubber.

Assignees

• Fudemoto Hiroyuki
• Harada Takashi
• Kouno Yoshihide
• Kon Seiji
• Hasegawa Keiichi
• Iizuka Munenori
• Yako Takayuki
• Machida Kunio
• Bridgestone Corp

Inventors

• Fudemoto Hiroyuki
• Harada Takashi
• Kouno Yoshihide
• Kon Seiji
• Hasegawa Keiichi
• Iizuka Munenori
• Yako Takayuki
• Machida Kunio

Classifications

• B29K2019/00

  Use of rubber not provided for in a single one of main groups {B29K2007/00 - B29K2011/00,} as moulding material · CPC title

• B60C5/01

  without substantial cord reinforcement, e.g. cordless tyres, cast tyres · CPC title

• B29D2030/086

  Building the tyre carcass by combining two or more sub-assemblies, e.g. two half-carcasses · CPC title

• B29K2995/0003

  having particular electrical or magnetic properties, e.g. piezoelectric · CPC title

• B29D30/0678

  Injection moulding specially adapted for tyres or parts thereof (injection moulding in general B29C45/00) · CPC title