Method and device for dosing and packaging polysilicon chunks and dosing and packaging unit
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United States of America Patent
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Jan 27, 2015
Issued Date -
N/A
app pub date -
Jan 25, 2012
filing date -
Feb 9, 2011
priority date (Note) -
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Abstract
Disclosed is a method for dosing and packaging polysilicon chunks, wherein a product flow of polysilicon chunks is transported via a feed channel, separated by at least one screen into coarse and fine chunks, weighed and dosed to a target weight by a dosing balance, discharged via a discharge channel and transported to a packaging unit where a first plastic bag is filled with the polysilicon chunks and sealed, the plastic bag containing polysilicon chunks being packaged with a further plastic bag which is formed by a shaper and subsequently welded, wherein the at least one screen and the dosing balance at least partially include a hard metal on their surfaces and the shaper for forming the plastic bag includes a wear-resistant coating. Also disclosed are a dosing unit, a packaging unit and a device for dosing and packaging polysilicon chunks, which contains a dosing unit and a packaging unit.
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