Plastics articles such as bottles with visual effect
View Patent ↗Plastic articles, and in particular polycarbonate articles, provide an appealing aesthetic look in the form of a colored glow at locations defined by cuts and/or protrusions in the surface of the article as a result of incorporation of a photoluminescent material in the polycarbonate from which the article is formed. The cuts and/or protrusions define a graphic image, for example one or more letters (i.e., an initial or name), an abstract design, a drawing or a trademark or logo. Ambient light entering the plastic body results in luminescence from the photoluminescent material which is conducted as a result of internal reflectance within the plastic body to the edges of the cuts in the bodies surface.
1. An article, wherein the article is a bottle comprising an annular portion comprising a molded body formed from a plastic composition comprising a plastic having an index of refraction of at least 1.4 and a fluorescent dye, wherein the annular portion has a graphic image formed as cuts or protrusions, or both, in the plastic composition on a surface of the molded body thereof to provide a luminescent visual effect in the shape of the graphic image as a result of the fluorescent dye that is part of the plastic composition.
2. The article of claim 1 , wherein the fluorescent dye is an organic fluorescent dye.
3. The article of claim 2 , wherein the fluorescent dye is included at a concentration of 1% or less by weight of the plastic.
4. The article of claim 3 , wherein the fluorescent dye provides a blue or violet visual effect and the fluorescent dye is included at a concentration of 0.5 to 0.001% by weight.
5. The article of claim 4 , wherein the fluorescent dye is included at a concentration of 0.3 to 0.1% by weight.
6. The article of claim 4 , wherein the fluorescent dye is included at a concentration of 0.1% to 0.005% by weight.
7. The article of claim 3 , wherein the fluorescent dye provides a red, orange or green visual effect and the fluorescent dye is included at a concentration of less than 0.0005% by weight.
8. The article of claim 7 , wherein the fluorescent dye is included at a concentration of 0.0001% to 0.0003% by weight.
9. The article of claim 2 , wherein the fluorescent dye is selected from the group consisting of perylene derivatives, anthracene derivatives, indigoid and thioindigoid derivatives, imidazole derivatives, naphtalimide derivatives, xanthenes, thioxanthenes, coumarins, rhodamines, (2,5-bis[5-tert-butyl-2-benzoxazolyl]thiophene) and derivatives thereof.
10. The article of claim 9 , wherein the fluorescent dye is included at a concentration of 1% or less by weight of the plastic.
11. The article of claim 2 , wherein the fluorescent dye has a quantum yield of 0.7 or greater.
12. The article of claim 2 , wherein the graphic images is formed from cuts having a depth of from 0.5 to 3 mm or protrusions having a height of from 0.5 to 5 mm or combinations thereof.
13. The article of claim 1 , wherein the article is a bottle having a bottom portion and a sealable top portion.
14. The article of claim 1 , wherein the plastic is polycarbonate.
15. The article of claim 14 , wherein the fluorescent dye has a quantum yield of 0.9 or greater.
16. The article of claim 14 , wherein the fluorescent dye is an organic fluorescent dye.
17. The article of claim 16 , wherein the fluorescent dye is included at a concentration of 1% or less by weight of the polycarbonate.
18. The article of claim 17 , wherein the fluorescent dye provides a blue or violet visual effect and the fluorescent dye is included at a concentration of 0.5 to 0.001% by weight.
19. The article of claim 18 , wherein the fluorescent dye is included at a concentration of 0.3 to 0.1% by weight.
20. The article of claim 18 , wherein the fluorescent dye is included at a concentration of 0.1 to 0.005% by weight.
21. The article of claim 17 , wherein the fluorescent dye provides a red, orange or green visual effect and the fluorescent dye is included at a concentration of less than 0.0005% by weight.
22. The article of claim 21 , wherein the fluorescent dye is included at a concentration of 0.0001% to 0.0003% by weight.
23. The article of claim 16 , wherein the fluorescent dye is selected from the group consisting of perylene derivatives, anthracene derivatives, indigoid and thioindigoid derivatives, imidazole derivatives, naphtalimide derivatives, xanthenes, thioxanthenes, coumarins, rhodamines, (2,5-bis[5-tert-butyl-2-benzoxazolyl]thiophene) and derivatives thereof.
24. The article of claim 23 , wherein the fluorescent dye is included at a concentration of 1% or less by weight of the polycarbonate.
25. The article of claim 1 , wherein article is a bottle and the bottle has an integrally-molded handle.
26. The article of claim 1 , wherein the plastic is a polycarbonate.
27. The article of claim 26 , wherein the fluorescent dye is selected from the group consisting of perylene derivatives, anthracene derivatives, indigoid and thioindigoid derivatives, imidazole derivatives, naphtalimide derivatives, xanthenes, thioxanthenes, coumarins, rhodamines, (2,5-bis[5-tert-butyl-2-benzoxazolyl]thiophene) and derivatives thereof.
28. The article of claim 27 , wherein the fluorescent dye included in the article is included at a concentration of 1% or less by weight of the plastic.
29. The article of claim 27 , wherein the fluorescent dye in the article provides a blue or violet visual effect and the fluorescent dye is included at a concentration of 0.5 to 0.001% by weight.
30. The article of claim 29 , wherein the fluorescent dye in the article is included at a concentration of 0.3 to 0.1% by weight.
31. The article of claim 29 , wherein the fluorescent dye in the article is included at a concentration of 0.1 to 0.005% by weight.
32. The article of claim 27 , wherein the fluorescent dye in the article provides a red, orange or green visual effect and the fluorescent dye is included at a concentration of less than 0.0005% by weight.
33. The article of claim 32 , wherein the fluorescent dye in the article is included at a concentration of 0.0001% to 0.0003% by weight.
34. The article of claim 1 , wherein the graphic image is formed from cuts having a depth of from 0.5 to 3 mm or protrusions having a height of from 0.5 to 5 mm or combinations thereof.
35. The article of claim 1 , wherein the fluorescent dye has a quantum yield of 0.7 or greater.
36. The article of claim 35 , wherein the fluorescent dye has a quantum yield of 0.9 or greater.
37. The article of claim 1 , wherein graphic image includes cuts in the plastic composition extending into the surface of the molded body.
38. The article of claim 2 , wherein the graphic images includes cuts in the plastic composition having a depth of from 0.5 to 3 mm.
39. The article of claim 1 , wherein the graphic images includes cuts in the plastic composition having a depth of from 0.5 to 3 mm.