Claims
- 1. An expanded polystyrene foam article comprising:
- virgin expanded polystyrene foam beads;
- and pieces of used expanded polystyrene foam fused with said virgin expanded polystyrene foam beads, said used expanded polystyrene foam being placed in direct contact with pentane gas prior to production of said expanded polystyrene foam article, said direct contact between said pentane gas and said used expanded polystyrene foam enabling said used expanded polystyrene foam to physically fuse with said virgin expanded polystyrene foam beads in said article.
- 2. An expanded polystyrene foam article comprising:
- virgin expanded polystyrene foam beads;
- and pieces of used expanded polystyrene foam fused with said virgin expanded polystyrene foam beads, said used expanded polystyrene foam being placed in direct contact with pentane gas prior to production of said expanded polystyrene foam article, said direct contact between said pentane gas and said used expanded polystyrene foam enabling said used expanded polystyrene foam to physically fuse with said virgin expanded polystyrene foam beads in said article, said article comprising not less than about 50 percent by weight said used expanded polystyrene foam.
CROSS REFERENCE TO RELATED APPLICATIONS
This is a divisional of copending application Ser. No. 07/724,006 filed on Jul. 1, 1991, now U.S. Pat. No. 5,217,660.
US Referenced Citations (16)
Foreign Referenced Citations (2)
Number |
Date |
Country |
50-107084 |
Aug 1975 |
JPX |
884896 |
Dec 1961 |
GBX |
Non-Patent Literature Citations (3)
Entry |
Article entitled "Germany to Implement Tough Recycling Law", Plastic News (Apr. 29, 1991). |
Promotional literature from Arco Chemical Company-Beaver Valley Plant involving polystyrene foam. |
Modern Plastics Encyclopedia, vol. 49, No. 10A (1972-1973), pp. 97-98, 271-272, 296, and 314-315. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
724006 |
Jul 1991 |
|