The comparison of gram weight of bare fabric and wool fabric usually refers to the gram weight of fabric in the state of bare fabric and wool fabric of the same material. Among the fabrics of the same material, the weight of the fabric in the light embryo state is lighter than that in the blank state, because the surface in the light embryo state has been polished to remove the roughness of the surface and reduce the quality of the surface, so the weight will be lighter than that in the blank state.
It should be noted that gram weight is not the only criterion to measure the quality of cloth, but also factors such as density, strength, flatness and air permeability of cloth need to be considered. In the actual selection of cloth, it is necessary to select the appropriate processing state and material according to the specific use and demand to meet the use requirements.