[54] BIODEGRADABLE LAMINATED FILMS FABRICATED FROM PECTIN AND CHITOSAN
[75] Inventor: Peter D. Hoagland, Schwenksville, Pa.
[73] Assignee: The United States of America, as represented by the Secretary of Agriculture, Washington, D.C.
[21] Appl. No.: 08/580,663 [22] Filed: Dec. 29, 1995
[51] Int. CI.6 C08L 5/06; C08L 5/08;
C09D 105/06; C09D 105/08
[52] U.S. CI 428/532; 536/2; 536/20;
106/210; 127/29
[58] Field of Search 428/532, 533,
428/534; 536/123, 2, 102, 20; 524/27, 55, 47; 127/32, 33, 29
[56] References Cited
U.S. PATENT DOCUMENTS
2,542,052 2/1951 Owens et al 18/37
5,089,307 2/1992 Ninomiya et al 428/35.2
5,213,887 5/1993 Huffman 428/323
5,306,550 4/1994 Nishiyama et al 428/288
5,318,780 6/1994 Viegas et al 424/427
5,358,784 10/1994 Hammer et al 428/34.8
5,370,914 12/1994 Hammer et al 428/34.8
5,451,673 9/1995 Fishman et al 536/123
FOREIGN PATENT DOCUMENTS
400484 12/1990 European Pat. Off. .
