US 5,705,017 A · Method for the production of steel sheet coated with a fluororesin film

Abstract

A method of producing a steel sheet coated with a fluororesin film by heat-fusing the fluororesin film onto a surface of the steel sheet, comprising heating the surface of the steel sheet to a temperature higher by 30-120 degrees C. than a melting point of the fluororesin of the fluororesin film, and contact bonding the fluororesin film onto the steel sheet surface between a pair of rolls, while a surface of a roll facing the fluororesin film, in the pair of rolls, is heated to a temperature lower by 100-210 degrees C. than the melting point of the fluororesin of the fluororesin film.

Claims11

Dependent claims

A method of producing a steel sheet coated with a fluororesin film by heat-fusing the fluororesin film onto a surface of the steel sheet, comprising:

heating the surface of the steel sheet to a temperature higher by 30.degree.-120.degree. C. than a melting point of the fluororesin of said fluororesin film;
and
contact bonding the fluororesin film onto the steel sheet surface between a pair of rolls, while a surface of a roll facing the fluororesin film, in said pair of rolls, is heated to a temperature lower by 100.degree.-210.degree. C. than the melting point of the fluororesin of the fluororesin film.

Dependencies are inferred from the claim text.

Facts

Application

08/549,789Filed 5 Dec 1995

Priority

JP 5-13877010 Jun 1993

Granted

6 Jan 1998

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

B32B 15/08
Comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 15/18
Layered products comprising a layer of metal: comprising iron or steel
B32B 37/04
Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding: characterised by the partial melting of at least one layer
B32B 37/06
Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding: characterised by the heating method

Method for the production of steel sheet coated with a fluororesin film

Life of this patent

Method for the production of steel sheet coated with a fluororesin film

Life of this patent

Abstract

Claims11