Patent ID: 9186864
Filing Date: 2015-11-17
Classification: B29C,B32B,E04C,Y10T

Abstract:
1. A composite comprising: a sandwich structure comprising: i. from about 15% to about 65% by weight epoxy resin; ii. is at least 1.5 times the combined thickness of the at least two surface layers; and iii. has a density of from 0.2 to 1.5 gram/cc; wherein sandwich structure has a flexural modulus as measured by ASTM D790/ISO 178 from 200 mPa to 700 mPa; and wherein the at least two surface layers are an internal hollow box section having at least four walls and an external hollow box section having at least four walls corresponding to the internal hollow box section of a matching shape; and wherein the internal hollow box section is located inside of the external hollow box section, and the epoxy foam is embedded between the internal hollow box section and the external hollow box section.