US 12,280,582 B2
Reformable epoxy resin for composites
Sylvain Gleyal, West Bloomfield, MI (US); Craig Chmielewski, Shelby Township, MI (US); Brandon Madaus, Shelby Township, MI (US); and Alejandro Gutierrez, Romeo, MI (US)
Assigned to ZEPHYROS, INC, Romeo, MI (US)
Filed by Zephyros, Inc., Romeo, MI (US)
Filed on Feb. 22, 2023, as Appl. No. 18/112,899.
Application 18/112,899 is a division of application No. 14/826,345, filed on Aug. 14, 2015, abandoned.
Claims priority of provisional application 62/037,199, filed on Aug. 14, 2014.
Prior Publication US 2023/0211578 A1, Jul. 6, 2023
Int. Cl. B29C 43/18 (2006.01); B29C 70/00 (2006.01); B29C 70/30 (2006.01); B32B 7/12 (2006.01); B32B 21/04 (2006.01); B32B 21/08 (2006.01); B32B 27/08 (2006.01); B32B 37/02 (2006.01); B32B 37/10 (2006.01); B32B 37/12 (2006.01); B29K 63/00 (2006.01); F41H 1/08 (2006.01); F41H 5/08 (2006.01)
CPC B32B 7/12 (2013.01) [B29C 43/18 (2013.01); B29C 70/003 (2021.05); B29C 70/30 (2013.01); B32B 21/04 (2013.01); B32B 21/042 (2013.01); B32B 21/08 (2013.01); B32B 27/08 (2013.01); B32B 37/02 (2013.01); B32B 37/10 (2013.01); B32B 37/1207 (2013.01); B32B 37/1284 (2013.01); B29K 2063/00 (2013.01); B32B 2250/02 (2013.01); B32B 2260/046 (2013.01); B32B 2307/738 (2013.01); B32B 2307/75 (2013.01); B32B 2363/00 (2013.01); B32B 2479/00 (2013.01); B32B 2605/00 (2013.01); B32B 2605/18 (2013.01); F41H 1/08 (2013.01); F41H 5/08 (2013.01)] 20 Claims
 
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.