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US 8,133,929 B2Granted
Method for incorporating long glass fibers into epoxy-based reinforcing resins
AssigneeSika Technology AG
InventorsFrank Hoefflin, Patricia Heidtman, Eric R. Medaris
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Abstract
A structural reinforcing material and method of making the same is disclosed and described. The material is prepared by coating glass reinforcing fibers with a molten epoxy-based composition. The glass fiber reinforced material can then be formed into a preform suitable for injection molding into an expandable sealing baffle.
Claims11
An expandable structural reinforcing material, comprising pellets of coated glass reinforcing fibers, formed by coating glass reinforcing fibers with a molten mixture;
- wherein the molten mixture comprises:
- at least one epoxy resin component, wherein each epoxy resin component is a solid at room temperature;
- at least one of a catalyst and a curing agent;
- and
- a blowing agent;
- and
- wherein the pellets are sized such that the pellets and the glass reinforcing fibers within the pellets have the same length of from 6 mm to 12 mm.
4 more elements
Dependencies are inferred from the claim text.