The rice and rice weevil is the loss factor feature, which are the dielectric materials that apply the electric field to the heat. The higher loss factor is the easier dielectric material that can be affected by dielectric heating. Consideration of the dielectric materials, the loss factor is greater than 0.02 [12]. Sometimes when the temperature is varied, the loss factor of some products can be increased. The permittivity is denoted by the symbol of ε , which is the ability of a dielectric material to be polarized. Dividing the permittivity by the permittivity of free space "ε" _"0" "=8.85×" 〖"10" 〗^"-12" F/m resulted in the relative permittivity (dielectric constant) ε ' .