Granted Patent B2

US 12,317,973 · App. 17/468,926 · Granted Jun 3, 2025

Inventors: Sophie Napoli (Neuchâtel, CH); Nicolas François (Neuchâtel, CH)

Assignee: The Swatch Group Research and Development Ltd

A44C5/00G04B19/32G04B37/22

Abstract

Claims (25)

1. A timepiece component comprising a phosphorescent multilayer structure comprising a front layer with a transparent or translucent polymer matrix comprising an elastomer matrix, and comprising phosphorescent pigments and a reflective underlying layer,

wherein at least some of the phosphorescent pigments are on an outermost side of the timepiece component, the outermost side facing away from the reflective underlying layer,

wherein the timepiece component forms a watch bracelet,

wherein the front layer is arranged along an entire length of the bracelet, and

wherein the phosphorescent pigments are evenly distributed throughout the front layer.

2. The timepiece component according to claim 1 , wherein the underlying layer comprises a polymer matrix charged with a reflective pigment.

3. The timepiece component according to claim 2 wherein the reflective pigment comprises titanium oxide.

4. The timepiece component according to claim 2 , wherein the polymer matrix of the underlying layer is compatible with the polymer matrix of the front layer.

5. The timepiece component according to claim 4 , wherein the front layer and the underlying layer comprise a fluoroelastomer.

6. The timepiece component according to claim 1 , wherein the front layer has a thickness comprised between 0.03 mm and 1 mm.

7. The timepiece component according to claim 1 , wherein the elastomer matrix includes a material having an elastic modulus less than 100 MPa.

8. The timepiece component according to claim 1 , wherein the front layer and the reflective underlying layer adhere to each other without using an adhesive.

9. A timepiece component comprising a phosphorescent multilayer structure ( 3 ) comprising a front layer ( 1 ) with a transparent or translucent polymer matrix and comprising phosphorescent pigments and a reflective underlying layer ( 2 ),

wherein the front layer ( 1 ) comprises an elastomer matrix, and

wherein the underlying layer ( 2 ) comprises a polymer matrix charged with a reflective pigment.

10. A timepiece component comprising a phosphorescent multilayer structure comprising a front layer with a transparent or translucent polymer matrix comprising an elastomer matrix, and comprising phosphorescent pigments and a reflective underlying layer,

wherein at least some of the phosphorescent pigments are on an outermost side of the timepiece component, the outermost side facing away from the reflective underlying layer,

wherein the front layer and the underlying layer comprise a fluoroelastomers,

wherein the underlying layer comprises a polymer matrix charged with a reflective pigment, and the reflective pigment comprises titanium oxide,

wherein the timepiece component forms a watch bracelet,

wherein the polymer matrix of the underlying layer is compatible with the polymer matrix of the front layer,

wherein the front layer is arranged along an entire length of the bracelet,

wherein the phosphorescent pigments are evenly distributed throughout the front layer,

wherein the front layer has a thickness comprised between 0.03 mm and 1 mm, and

wherein the elastomer matrix includes a material having an elastic modulus less than 100 MPa.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (33)