Decorative tire and method for producing same

Patent metadata

Field	Value
Publication number	US-9415638-B2
Application number	US-201314371390-A
Country	US
Kind code	B2
Filing date	Jan 11, 2013
Priority date	Jan 12, 2012
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

Provided is a decorative tire in which an ink composition including a colorant is directly applied onto the tire surface in order to improve the degree of flexibility in design. This decorative tire has a decorative printed layer formed on the tire surface, the decorative printed layer being a cured film of an active-energy-ray-curable ink composition including a colorant. The ink composition includes a monofunctional monomer having a glass transition point of −30° C. or lower, and a polyfunctional monomer having a glass transition point of 0° C. or lower. Preferably, the ink composition further includes a monofunctional monomer having an alicyclic structure with a glass transition point between 0-110° C. inclusive. Preferably, a surface protection layer that protects the surface of the decorative printed layer is formed on the surface of the decorative printed layer. Also, preferably, a primer layer is formed between the tire surface and the decorative printed layer.

First claim

The invention claimed is:

1. A decorative tire having a decorative print layer formed on a tire surface, the decorative print layer being a cured film of an active-energy-ray-curable ink composition containing a coloring material,
wherein the active-energy-ray-curable ink composition contains active-energy-ray-polymerizable monomers and an active-energy-ray polymerization initiator, and
the ink composition contains, as the active-energy-ray-polymerizable monomers,
a monomer A): a monofunctional monomer having a glass transition point of −30° C. or lower,
a monomer B): a polyfunctional monomer having a glass transition point of 0° C. or lower,
wherein a primer layer is formed between the tire surface and the decorative print layer, and
a thickness of the primer layer is 25 μm to 100 μm.

2. The decorative tire according to claim 1 , wherein the ink composition further contains, as the active-energy-ray-polymerizable monomers,
a monomer C): a monofunctional monomer having an alicyclic structure having a glass transition point of from 0° C. to 110° C.

3. The decorative tire according to claim 1 , wherein when the active-energy-ray-curable ink composition is formed on a rubber base material having an elastic modulus of 1.0 Mpa to 1.5 MPa at the time of 100% elongation when a specimen of JIS number 3 is prepared to be subjected to a tensile test according to JIS K6251, as a cured film having a thickness of 10 μm, and the cured film-formed base material having the cured film formed thereon is used as a specimen of dumbbell-shaped number 6 (JIS K6251-5) to perform a tensile test according to the method of JIS K7161 at 25° C. and at a tensile rate of 100 mm/min, the decorative print layer formed on the tire surface has a cured film fracture point elongation, at which the cured film undergoes cracking, of 200% or more.

4. The decorative tire according to claim 1 , wherein a thickness of the decorative print layer is 1 μm to 100 μm.

5. The decorative tire according to claim 1 , wherein a surface protective layer that protects a surface of the decorative print layer is formed on the surface of the decorative print layer.

6. The decorative tire according to claim 5 , wherein the surface protective layer is a cured film produced by applying a silicone-modified (meth)acrylic emulsion and drying the silicone-modified (meth)acrylic emulsion, and a thickness of the surface protective layer is 1 μm to 100 μm.

7. The decorative tire according to claim 1 , wherein the decorative print layer is formed by an inkjet method.

8. A method for producing the decorative tire according to claim 1 , the method comprising forming the decorative print layer by an inkjet method.

9. The decorative tire according to claim 2 , wherein when the active-energy-ray-curable ink composition is formed on a rubber base material having an elastic modulus of 1.0 Mpa to 1.5 MPa at the time of 100% elongation when a specimen of JIS number 3 is prepared to be subjected to a tensile test according to JIS K6251, as a cured film having a thickness of 10 μm, and the cured film-formed base material having the cured film formed thereon is used as a specimen of dumbbell-shaped number 6 (JIS K6251-5) to perform a tensile test according to the method of JIS K7161 at 25° C. and at a tensile rate of 100 mm/min, the decorative print layer formed on the tire surface has a cured film fracture point elongation, at which the cured film undergoes cracking, of 200% or more.

10. The decorative tire according to claim 2 , wherein a thickness of the decorative print layer is 1 μm to 100 μm.

11. The decorative tire according to claim 3 , wherein a thickness of the decorative print layer is 1 μm to 100 μm.

12. The decorative tire according to claim 2 , wherein a surface protective layer that protects a surface of the decorative print layer is formed on the surface of the decorative print layer.

13. The decorative tire according to claim 3 , wherein a surface protective layer that protects a surface of the decorative print layer is formed on the surface of the decorative print layer.

14. The decorative tire according to claim 4 , wherein a surface protective layer that protects a surface of the decorative print layer is formed on the surface of the decorative print layer.

15. The decorative tire according to claim 4 , wherein the decorative print layer is formed by an inkjet method.

16. The decorative tire according to claim 2 , wherein the decorative print layer is formed by an inkjet method.

Assignees

• Dnp Fine Chemicals Co Ltd
• Bridgestone Corp

Inventors

• Saito Yasuma
• Furutaka Toshio
• Sugita Yukio
• Nakamura Yuki
• Torisu Kojiro
• Hajikano Akihiko

Classifications

• G01N3/08

  by applying steady tensile or compressive forces (G01N3/28 takes precedence) · CPC title

• B41M5/0064

  on plastics, horn, rubber, or other organic polymers · CPC title

• Y10T428/24802

  Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] · CPC title

• C09D11/30

  Inkjet printing inks · CPC title

• C09D133/04

  Homopolymers or copolymers of esters {(C09D143/04 takes precedence)} · CPC title