A conditioning process using a mechanical or vacuum-assisted procedure to open the closed cells of a high resilience slabstock or molded FPF.
                                                            
                                                     
                        
                                                
                        
                        
                            Usually a mechanical or vacuum-assisted procedure to open the closed cells of a high resilience slabstock or molded foam.
                                                            
                                                     
                        
                                                
                        
                        
                            A procedure, typically mechanical- or vacuum-assisted, in which the closed cells of a high resilience slab stock or molded foam are opened.