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US 2012/0135147 A1Published application
High build low temperature exotherm extrudable material
AssigneeIllinois Tool Works Inc.
InventorsHelena Twardowska, Cameron Giffen, Louis Paul Schaefer, Randall Lake
Life of this patent
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Abstract
A high build tooling compound suited for plug building by extrusion process with conventional FRP dispensing equipment is described. The material is based on urethane hybrid and unsaturated polyester resin mixture with additives to provide low shrinkage and low exotherm. The formulation allows building a desired part thicknesses from 0.5 to 3 inches in one application. Methods of making a plug are also described.
Claims20
A high build tooling compound comprising:
- a urethane unsaturated polyester hybrid resin;
- a low reactivity unsaturated polyester resin;
- and
- optionally one or more of monomer, acrylic resin, activators, inhibitors, fumed silica, fiber glass, microspheres, or catalyst.
1 more element
A method of making a plug comprising
- providing a substrate;
- placing a layer of resin and glass on the substrate;
- applying a layer of a high build tooling compound on the layer of resin and glass, the high build tooling compound comprising:
- a urethane unsaturated polyester hybrid resin;
- a low reactivity unsaturated polyester resin;
- and
- optionally one or more of monomer, acrylic resin, activators, inhibitors, fumed silica, fiber glass, microspheres, or catalyst curing the layer of the high build tooling compound;
- machining the layer of the high build tooling compound;
- and
- applying a primer to the machined layer of the high build tooling compound.
7 more elements
Dependencies are inferred from the claim text.