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US 11,298,725 B2Granted
Sheet manufacturing apparatus
AssigneeSeiko Epson Corporation
InventorYoshiyuki Nagai
Life of this patent
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Abstract
A sheet manufacturing apparatus includes: a second web former that forms a web of defibrated substances obtained by defibrating a raw material containing fibers; and a sheet former that forms a sheet of the web formed by the second web former. The sheet former has a former roller unit and a cleaning unit that has an oil impregnated web for cleaning a roller surface of the former roller unit.
Claims8
A sheet manufacturing apparatus comprising:
- a web former that forms a web of defibrated substances obtained by defibrating a raw material containing fibers;
- and
- a sheet former that forms a sheet of the web formed by the web former, the sheet former including a former roller unit, the former roller unit having
- a pressurizing roller pair that pressurizes and heats the web formed by the web former so as to form a sheet,
- cleaning units each of which has an oil impregnated web and that clean roller surfaces of rollers of the pressurizing roller pair, respectively, and
- downstream scraping blades that remove attached matter on the roller surfaces of the rollers of the pressurizing roller pair, respectively, each of the downstream scraping blades being disposed, in a roller rotating direction of each of the rollers, between a nip portion of the pressurizing roller pair and each of the cleaning units and disposed downstream relative to each of the cleaning units in the roller rotating direction,
- each of the cleaning units cleaning each of the roller surfaces of the rollers, which has passed through the nip portion, on an upstream side of each of the downstream scraping blades in the roller rotating direction.
4 more elements
Dependencies are inferred from the claim text.