The secondary throwing of hard packaging belongs to non integrated filling packaging, where the forming of packaging materials and the filling of material bodies are two independent processes that do not affect each other. Its advantages are high flexibility and rich combination forms.

The facial mask cup toss is named because it is often paired with the sleep facial mask. Different from the blister one-piece packaging, the facial mask cup needs to be assembled after throwing and filling, which also makes its shape more variable, and its use more interesting and ritual.