Polymer coating formulation and application methods
OwnerJon H. Brasher, James Woodham +2inventors
InventorsJon H. Brasher, James Woodham, Christopher Campbell, Stuart Christmas
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Abstract
A plastisol formulation configured for use in coating substrates and a method for applying the formulation. The inventive formulation has exceptional flexibility over a wide range of temperatures. It is comprised of polyvinyl chloride, a plasticizer, a stabilizer, preferably a pigment, and a UV inhibitor/light stabilizer. The formulation is applied to a substrate and then cured by exposing it to an elevated temperature.
Claims20
A method of applying a polymer formulation to a substrate, comprising:
- (a) providing a liquid plastisol including the following ingredients stated in terms of a percentage by mass,
- (i) between 15% and 50% polyvinyl chloride resins,
- (ii) between 30% and 40% plasticizer,
- (iii) between 2% and 80% stabilizer;
- (b) providing a substrate;
- (c) cooling said liquid plastisol to a first temperature below −15 degrees centigrade;
- (d) heating said substrate to a second temperature that is at least 55 degrees centigrade above said first temperature;
- (c) applying said liquid plastisol to said substrate;
- and
- (e) after said plastisol is applied to said substrate, curing said plastisol at a third temperature that is less than 150 degree centigrade.
A method of applying a polymer formulation to a substrate, comprising:
- (a) providing a liquid plastisol including the following ingredients stated in terms of a percentage by mass,
- (i) between 15% and 50% polyvinyl chloride resins,
- (ii) between 30% and 40% plasticizer,
- (iii) between 2% and 80% stabilizer;
- (b) providing a substrate;
- (c) cooling said liquid plastisol to a first temperature below −15 degrees centigrade;
- (d) heating said substrate to a second temperature that is at least 55 degrees centigrade above said first temperature;
- (c) applying said liquid plastisol to said substrate;
- and
- (e) after said plastisol is applied to said substrate, curing said plastisol at a third temperature that is above said second temperature.
Dependencies are inferred from the claim text.