Low heat conduction extruded sheet

The utility model provides a low heat conduction extruded sheet, belongs to the insulating technology field. Be connected the skeleton between first extruded sheet and the second extruded sheet, first rough layer is connected to first extruded sheet surface, and the second rough layer is connected to second extruded sheet surface, and the constitution is arranged for the vertical retort board to the skeleton, and the surface of second rough layer is hair side, unevenness's geometry. Skeleton or be vertical retort board and horizontal bar board constitution, the surface of first rough layer, the surface of second rough layer is knurling or fluting. The utility model has the advantages that: first rough layer, second rough layer have increased the adhesion ability of wall body heat preservation extruded sheet, make extruded sheet and wall body and outer whitewashing be difficult for droing, reduce the crackle to extruded sheet wall body heat preservation effect has been reached better. Having the skeleton betwe