US12280582 - Reformable epoxy resin for composites

This patent describes a method for creating a composite structure that includes rigid layers and reformable epoxy resin layers, allowing for the formation of non-planar shapes through heating and molding. The process involves applying the epoxy resin to a planar composite, which can be reshaped multiple times after cooling below its glass transition temperature.

Claim 1

1. A method comprising: (i) forming a substantially planar composite structure having at least two layers; (ii) applying a reformable epoxy resin adhesive material onto one or more of the at least two layers; (iii) optionally cutting the composite structure to a desired shape; (iv) heating the substantially planar composite structure in a mold to form a non-planar composite structure; wherein the reformable epoxy resin adhesive material falls below its glass transition temperature upon exposure to ambient temperature; after the reformable epoxy resin adhesive material falls below its glass transition temperature, it can be heated multiple times above its glass transition temperature for molding into the non-planar composite structure; and at least one of the at least two layers is a wood material. (i) forming a substantially planar composite structure having at least two layers; (ii) applying a reformable epoxy resin adhesive material onto one or more of the at least two layers; (iii) optionally cutting the composite structure to a desired shape; (iv) heating the substantially planar composite structure in a mold to form a non-planar composite structure; wherein the reformable epoxy resin adhesive material falls below its glass transition temperature upon exposure to ambient temperature; after the reformable epoxy resin adhesive material falls below its glass transition temperature, it can be heated multiple times above its glass transition temperature for molding into the non-planar composite structure; and at least one of the at least two layers is a wood material.

Google Patents

https://patents.google.com/patent/US12280582

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12280582