Invention Grant
- Patent Title: Method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine
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Application No.: US16914799Application Date: 2020-06-29
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Publication No.: US11352749B2Publication Date: 2022-06-07
- Inventor: Jouni Matula , Jari Mäkinen , Jussi Matula
- Applicant: WETEND TECHNOLOGIES OY , VALMET TECHNOLOGIES OY
- Applicant Address: FI Savonlinna; FI Espoo
- Assignee: WETEND TECHNOLOGIES OY,VALMET TECHNOLOGIES OY
- Current Assignee: WETEND TECHNOLOGIES OY,VALMET TECHNOLOGIES OY
- Current Assignee Address: FI Savonlinna; FI Espoo
- Agency: Nixon & Vanderhye P.C.
- Priority: EP19183236 20190628
- Main IPC: D21F1/02
- IPC: D21F1/02 ; B01F5/04 ; D21B1/34 ; D21H21/10
Abstract:
A method of and an arrangement for adding a chemical to an approach flow system of a fiber web machine by mixing of a retention chemical to a fibrous stock flowing in an approach flow system of a fiber web machine by a mixer (200) between the attenuator (16) and the headbox (18).
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