Patent ID: 8323447
Filing Date: 2012-12-04
Classification: B32B,B44C,E04F,G10K,Y10T

Abstract:
1. A process for the manufacturing of a decorative laminate, which laminate comprises an uppermost and lower visible surface, the uppermost surface comprising a decorative and abrasion resistant thermosetting laminate layer; a dampening foil between the decorative and abrasion resistant thermosetting laminate layer; the dampening foil having a thickness in the range of 0.1-0.7 mm consisting of expanded, physically cross-linked polyolefin with closed cells and a density in the range 150-400kg/m 2 , and containing a non-metallic conductive material providing better than 500Ωcm; said non-metallic conductive material being at least one selected from the group consisting of carbon black and carbon fiber; and a carrying core; wherein an upper side of the core faces the abrasion resistant thermosetting laminate and that a lower side of the core faces the lower visible surface; wherein the lower visible surface consists of a balance layer, said balance layer having the purpose of preventing warping of said decorative laminate and at the same time having the purpose of acoustic dampening, said balance layer consisting of an expanded polymer and 2-30% cellulose; said polymer comprising a polyethylene; said balance layer having an unloaded density in the range of 500-950 kg/m 3 and an unloaded thickness in the range of 0.5-5 mm; the balance layer, the dampening foil and said thermosetting laminate are joined with said fiber board core by pressing the thermosetting laminate layer, the dampening foil, the core and the balance layer with a bonding agent under heat and pressure to form the decorative laminate, and the achieved decorative laminate is thereafter cut into panels and provided with edges intended for joining.