Method and apparatus for drying of fibrous webs
OwnerDan Clarahan, Ron Gropp +2inventors
InventorsDan Clarahan, Ron Gropp, Frances Ropp, Paul Arnold
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Abstract
A machine and process for production of wet formed fibrous webs, in which the web is formed from a suspension on a fabric and subjected to a final drying process such as a Yankee dryer roll, while further subjecting the Web to an intermediate drying on a high-heat-transfer roll, with or without hood, before the final drying process. The intermediate dryer roll has a solid, gas-impermeable surface, and a localized heat source directly heats the dryer to a higher temperature than in the final drying process.
Claims27
Machine for production of fibrous webs with a forming section in which the web is formed on a fabric, and with at least one rotatable dryer which is located after the forming section, wherein the improvement comprises that the dryer has a solid surface and at least one heat source to heat the dryer, provided on the inside and or outside of the dryer.
Process for production of a wet formed web, in which the web is formed from a suspension on a fabric and subjected to a final drying process such as a Yankee dryer roll, wherein the improvement comprises subjecting the web to an intermediate drying on a high-heat-transfer roll, with or without hood, before the final drying process.
Dependencies are inferred from the claim text.