Packaging method for polycrystalline silicon, double-packaging method for polycrystalline silicon, and producing method of raw material for monocrystalline silicon

Abstract

This packaging method for polycrystalline silicon is for reducing contamination by surface organic impurities, in particular surface carbon impurities. After a packaging bag is filled with polycrystalline silicon, a portion of the packaging bag on the opening part side relative to a filled part where the polycrystalline silicon is filled and on the filled part side relative to a planned heat-seal part where the packaging bag will be heat-sealed is clamped by clamping rods such that no gas flows into the filled part, the planned heat-seal part is heat-sealed by sealing rods on both sides while clamped by the clamping rods, and the clamping rods are removed after the heat-sealing.

Dependencies are inferred from the claim text.