Sprayable skin composition and method of applying
AssigneeIllinois Tool Works Inc.
InventorsWilliam F. Lauersdorf, Kimberly A. Whitley
Life of this patent
Estimating the term…
Abstract
A sprayable skin composition and method of applying the skin composition is provided for use in reinforcing plastic products. The skin composition comprises a mixture of reinforcing wollastonite fibers and a synthetic resin, along with additional additives such as thixotropic agents, accelerators, stabilizers, and an air release agent. The composition is applied by spraying onto a gel coat in a mold and forms a gel within 1 to 3 minutes without the formation of air bubbles.
Claims20
A sprayable skin composition for use in reinforcing plastic products comprising:
- about 15% to about 25% by weight of said sprayable skin composition of wollastonite reinforcing fibers;
- about 50% to about 80% by weight of said sprayable skin composition synthetic polyester resin wherein the synthetic polyester resin is orthophthalic polyester resins, isophthalic polyester resins, or mixtures thereof;
- and
- about 5% to about 15% by weight of said sprayable skin composition of a styrene monomer;
- wherein said sprayable skin composition gels in about 1 to about 3 minutes at ambient temperature after being sprayed onto a gel coated surface without the formation of air bubbles.
A sprayable skin composition for reinforcing products comprising:
- from about 15 to about 25% by weight of said sprayable skin composition of wollastonite;
- from about 50% to about 80% by weight of said sprayable skin composition of a synthetic polyester resin wherein the synthetic polyester resin is orthophthalic polyester resins, isophthalic polyester resins, or mixtures thereof;
- from about 5 to about 15% by weight of said sprayable skin composition of a styrene monomer;
- from about 0 to about 5% by weight of said sprayable skin composition of a thixotropic agent;
- from about 0 to about 5% by weight of said sprayable skin composition of an accelerator;
- and
- from about 0 to about 5% by weight of said sprayable skin composition of an air release additive;
- wherein said sprayable skin composition gels in about 1 to about 3 minutes at ambient temperature after being sprayed onto a gel coated surface without the formation of air bubbles.
A method of applying a sprayable skin composition comprising:
- providing a molding surface;
- applying a gel coat to said molding surface;
- providing a sprayable skin composition comprising about 15% to about 25% by weight of said sprayable skin composition wollastonite reinforcing fibers, about 50% to about 80% by weight of said sprayable skin composition synthetic polyester resin wherein the synthetic polyester resin is orthophthalic polyester resins, isophthalic polyester resins, or mixtures thereof, and about 5% to about 15% by weight of said sprayable skin composition of a styrene monomer;
- applying said sprayable skin composition to said gel coat by spraying, wherein said sprayable skin composition gels within about 1 to about 3 minutes at ambient temperature after application without the formation of air bubbles.
Dependencies are inferred from the claim text.