Invention Grant
- Patent Title: Method and apparatus for precipitating solvent out of the process air in spunbond production
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Application No.: US17260716Application Date: 2019-07-17
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Publication No.: US11976397B2Publication Date: 2024-05-07
- Inventor: Ibrahim Sagerer-Foric
- Applicant: LENZING AKTIENGESELLSCHAFT
- Applicant Address: AT Lenzing
- Assignee: LENZING AKTIENGESELLSCHAFT
- Current Assignee: LENZING AKTIENGESELLSCHAFT
- Current Assignee Address: AT Lenzing
- Agency: Venable LLP
- Priority: EP 183887 2018.07.17
- International Application: PCT/EP2019/069239 2019.07.17
- International Announcement: WO2020/016296A 2020.01.23
- Date entered country: 2021-01-15
- Main IPC: B01D37/00
- IPC: B01D37/00 ; D01D5/096 ; D01D7/00 ; D01F2/00 ; D04H3/013 ; D04H3/02 ; D04H3/03 ; D04H3/033 ; D04H3/16 ; F26B5/04 ; F26B13/10 ; F26B13/30

Abstract:
A device for laying down filaments (3) into a spundbond fabric (8), dehumidifying the spundbond fabric (8) and sucking off the process air loaded with solvents and coagulants, including a conveyor device (7) for transporting the spundbond fabric (8) in a transport direction, wherein the conveyor device (7) has a deposition surface (6) for the filament (3), wherein the conveyor device (7) at least in the region of the deposition surface (6) is permeable for gases and liquids, wherein underneath the deposition surface (6) of the conveyor device (7) there is provided a primary dehumidifying device (9), wherein there is arranged at least one upper suction device (10, 11) upstream and/or downstream and/or laterally of the deposition surface (6).
Public/Granted literature
- US20210292949A1 METHOD AND APPARATUS FOR PRECIPITATING SOLVENT OUT OF THE PROCESS AIR IN SPUNBOND PRODUCTION Public/Granted day:2021-09-23
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