Polyester resin film laminated steel sheet for drawn and ironed can
First Claim
1. A polyester resin film laminated steel sheet or strip for a drawn and ironed can, one side of which is to be used for the inside of said drawn and ironed can and the opposite side of which is to be used for the outside of said can,said one side being laminated to form a triple layer consisting of:
- an uppermost layer of copolyester resin film having a thickness of 10 to 50 μ
m, a softening temperature of 170 to 235°
C., a melting temperature of 190 to 250°
C., an elongation at break of 150 to 500%, strength at break of 3 to 18 kg/mm2, and a degree of orientation between 0 to 0.100,an intermediate layer of hydrated chromium oxide anda lowermost layer of tin, andsaid opposite side being covered with a layer of tin.
1 Assignment
0 Petitions
Accused Products
Abstract
A polyester resin film laminated steel sheet for a drawn and ironed can which comprises laminating a copolyester resin film prepared by processing according to a known method on the one side of a steel sheet covered with at least hydrated chromium oxide to be employed for the inside of the drawn and ironed can and plating tin on the other side of the steel sheet to be employed for the outside of the drawn and ironed can.
By using this polyester resin film laminated steel sheet, a drawn and ironed can having an excellent corrosion resistance with respect to the packed contents such as carbonated beverages and fruit juices is easily produced. Furthermore, this drawn and ironed can can be used without an inner lacquer coating after forming.
21 Citations
5 Claims
-
1. A polyester resin film laminated steel sheet or strip for a drawn and ironed can, one side of which is to be used for the inside of said drawn and ironed can and the opposite side of which is to be used for the outside of said can,
said one side being laminated to form a triple layer consisting of: -
an uppermost layer of copolyester resin film having a thickness of 10 to 50 μ
m, a softening temperature of 170 to 235°
C., a melting temperature of 190 to 250°
C., an elongation at break of 150 to 500%, strength at break of 3 to 18 kg/mm2, and a degree of orientation between 0 to 0.100,an intermediate layer of hydrated chromium oxide and a lowermost layer of tin, and said opposite side being covered with a layer of tin. - View Dependent Claims (2, 3, 4, 5)
-
Specification