| 摘要 |
A covering comprises panels (9, 9') having jointing elements (91, 92) on the side provided with adhesive (96) which may be transformed from a passive to an active state. Independent claims are also included for: (i) a process for the production of panels (100, 100') for coverings or cladding, preferably for floor covering, by application by co-extrusion of an adhesive bead (96) and/or a bead of an adhesive polymer core (961), activated by liquid, preferably water, encased in a sheath (962) of a water-, moisture and/or solvent resistant and impermeable, flexible polymer preferably a synthetic polymer, preferably based on polyvinyl acetate or a biopolymer onto side grooves (92), preferably onto at least one of the side faces (921, 922) and/or the tongues (91), preferably onto at least one of the side faces (911, 912) and (ii) a machine (100) for the application of a core (961) and sheath (962) adhesive bead by co-extrusion via a core nozzle (102) and concentrically arranged ring nozzle (212) onto the groove and/or tongue of a panel. |
