Fig 2 shows absolute values of surfaceenergy for solid materials and the surfacetension of many plastics including polyethylene and polypropylene is often insufficient for bonding or printing.
Wettability depends on one specific property of the surface: surfaceenergy, often referred to as surfacetension.
润湿性依赖于某一特定财产的表面：表面能量，通常称为表面张力。
3
The higher the surfaceenergy of the solid substrate in relation to the surfacetension of the liquid, the better its wettability, and the smaller the contact Angle.