Patent ID: 9545739
Date: 2017-01-17
CPC Classifications: B29C,B29K,B29L,B32B

Claim:
1. A process for producing a composite structure comprising a main structure and an external shell connected to the main structure, where the main structure comprises a molded foam obtainable from prefoamed foam particles and the external shell comprises a hollow structure open at one end or at two opposite ends, which comprises in a step a) fusing prefoamed foam particles in a mold by introducing a hot fluid with a temperature of from 105° C. to 180° C. to give a molded foam, and then demolding the molded foam at a mold temperature of from 40° C. to 100° C., in a subsequent step b) cooling, to a temperature of from 5° C. to 39° C., the molded foam removed from the mold, in a subsequent step c) introducing the cooled molded foam through an open end of a hollow structure into said hollow structure, and in a subsequent step d) heat-aging the hollow structure with the molded foam located therein over a period of from 0.5 h to 24 h at a temperature of from 40° C. to 100° C., where a frictional connection is formed between the hollow structure and the molded foam.