Ultraclean surface treatment device
AssigneeRippey Corporation
InventorKristan G. Bahten
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Abstract
The present invention provides a novel porous polymeric device (101) (103) (105) (107) (109) (111) (113), e.g., an ultraclean brush. The device includes an elongated foam member (101, 103), which has an outer surface for removing residual particles from a surface of a substrate. Among other features, the elongated foam member includes a polyvinyl alcohol bearing compound, where the elongated foam member has a calcium ion impurity concentration of less than about 1 part per million. Accordingly, the present device is much cleaner than conventional devices.
Claims20
An out of the box ultraclean brush, said ultraclean brush device comprising:
- an elongated porous polymeric member comprising an outer surface for removing residual particles from a surface of a substrate;
- wherein said elongated porous member comprises a polyvinyl alcohol bearing compound, said elongated porous member having a calcium ion impurity concentration of less than about 0.05 part per million, and said elongated porous member having a sodium impurity concentration of less than about 0.10 part per million, and said elongated porous member having a sulfate impurity concentration of less than about 0.20 part per million;
- wherein said elongated porous member being substantially free from any loose portions of said porous polymeric member greater than about 0.5 micron in size.
An out of the box surface treatment device, said device comprising:
- a porous polymeric member comprising an outer surface for removing residual particles from a surface of a substrate;
- wherein said porous polymeric member comprises a polyvinyl alcohol bearing compound, said porous polymeric member having a calcium ion impurity concentration of less than about 0.05 part per million, said porous polymeric member having a sodium concentration of less than about 0.1 part per million, and said porous member having a sulfate impurity concentration of less than about 0.20 part per million, said porous polymeric member being substantially free from loose portions of said porous polymeric member greater than about 0.5 micron in size.
Dependencies are inferred from the claim text.