Metallized cutlery and tableware and method therefor
View Patent ↗A plastic cutlery item molded from a plastic material, such as polystyrene, having a metallic coating that imparts to this cutlery item the appearance of metal cutlery or silverware. In one embodiment the plastic cutlery or tableware items are molded using injection molding techniques, and subjected to a vacuum metallizing process in an individualized non-contiguous manner, where a thin metallic layer is deposited on at least one of their surfaces. The resultant items simulate the appearance of metal cutlery or tableware. In one embodiment of the invention the plastic cutlery or tableware articles are molded from a clear polystyrene resin and are coated with a thin stainless steel layer through vacuum sputtering deposition on only one of the sides. The abrasion resistance of the metallic coating can be enhanced by subjecting the articles to a post-metallizing holding period or by applying a clear protective overcoat.
1. A metallized plastic food-service item, comprising:
a plastic cutlery article for handling and consuming food, said plastic cutlery article comprising a first portion and a second portion;
a thin metallic coating deposited on said first portion of said plastic cutlery article by a vacuum deposition process, wherein said thin metallic coating is of a sufficient thickness to impart a reflective metal appearance to said first portion of said plastic cutlery article, said thickness being less than 2000 nanometers; and
said second portion of said cutlery article being characterized by absence of said thin metallic coating, and said second portion of said plastic cutlery article retaining its plastic appearance.
2. The metallized plastic food-service item according to claim 1 , wherein said second portion of said plastic cutlery article comprises a handle portion of said plastic cutlery article.
3. The metallized plastic food-service item according to claim 1 , wherein said first portion of said plastic cutlery article comprises a head portion of said plastic cutlery article.
4. The metallized plastic food-service item according to claim 1 , wherein said plastic cutlery article is adapted for placement on a table surface with said first portion displaying said reflective metal appearance and said second portion displaying said plastic appearance.
5. The metallized plastic food-service item according to claim 1 , wherein said plastic cutlery article is one of a fork, a knife, and a spoon.
6. The metallized plastic food-service item according to claim 1 , wherein said plastic cutlery article is produced by injection molding.
7. The metallized plastic food-service item according to claim 1 , wherein at least a portion of said plastic cutlery article is molded from a light-transmitting plastic material.
8. The metallized plastic food-service item according to claim 1 , wherein at least a portion of said plastic cutlery article is molded from a colored plastic material.
9. The metallized plastic food-service item according to claim 1 , wherein said first portion is made from a light transmitting plastic material, and said second portion of said plastic cutlery article is made from a colored plastic material.
10. The metallized plastic food-service item according to claim 1 , wherein said thin metallic coating is less than 1000 nanometers in thickness.
11. The metallized plastic food-service item according to claim 1 , wherein said thin metallic coating is less than 200 nanometers in thickness.
12. The metallized plastic food-service item according to claim 1 , wherein said vacuum deposition process is a sputtering deposition process.
13. The metallized plastic food-service according to claim 1 , wherein said thin metallic coating is stainless steel.
14. The metallized plastic food service item according to claim 1 , wherein said plastic cutlery article is adapted for disposable use.
15. The metallized plastic food service item according to claim 1 , wherein said plastic cutlery article is at least partially composed of polystyrene.