Cross-linked foam having an inner cavity structure, and a manufacturing method for the same

Abstract

A method and device for forming a cross-linked foam and a cross-linked foam are provided. The method includes the steps of preparing at least one foaming material for cross-linked foaming, the foaming material processed to have a plane or three-dimensional shape; forming at least one interfacing pattern on a surface of at least one of the foaming material using at least one interfacing material that prevents chemical and physical interaction between the foaming materials; and forming a cross-linked foam by foaming the foaming material having the interfacing pattern thereon, the cross-linked foam having a foam body and an internally-formed surface.

1 . A cross-linked foam fabricated by a method comprising: 
 preparing at least two foaming materials for a cross-linked foaming, each of the foaming materials processed to have a plane or three-dimensional shape;    forming at least one interfacing pattern on a surface of at least one of the foaming materials using at least one interfacing material that prevents chemical and physical interaction between the foaming materials; and    forming a cross-linked foam by foaming the foaming materials including the foaming material having the interfacing pattern thereon, the cross-linked foam having a foam body and an internally-formed surface.    
   
   
       2 . A cross-linked foam comprising: 
 a foam body; and    at least one inner cavity structure formed inside the foam body,    wherein the foam body and the inner cavity structure are formed simultaneously.    
   
   
       3 . The cross-linked foam according to  claim 2 , wherein the inner cavity structure is connected to at least one surface of the foam body.  
   
   
       4 . The cross-linked foam according to  claim 2 , wherein the foam body includes at least one air passage connected to the inner cavity structure.  
   
   
       5 . The cross-linked foam according to  claim 4 , further comprising a valve at the air passage to control an inflow and an outflow of air and/or moisture.  
   
   
       6 . The cross-linked foam according to  claim 2 , wherein the inner cavity structure is filled with one or more materials that are the same as or different from the foam body.  
   
   
       7 . The cross-linked foam according to  claim 2 , wherein a molded material that is the same material as or a different material from the foam body is inserted into the inner cavity structure.