PRODUCTION OF ACRYLIC HOLLOW FIBER

PRODUCTION OF ACRYLIC HOLLOW FIBER

PURPOSE:To obtain an acrylic hollow fiber having excellent bulkiness, compressive elasticity, water retentivity and heat insulating characteristic by setting the discharge angle of a raw liquid for spinning at 20-40 deg. relative to a nozzle plane and spinning draft ratio at 0.9-1.5. CONSTITUTION:Th...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KODERA YOSHINOBU, KUNISHIGE TSUNEO, OCHI MITSUTOSHI
Format: Patent
Sprache:eng
Schlagworte:
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PURPOSE:To obtain an acrylic hollow fiber having excellent bulkiness, compressive elasticity, water retentivity and heat insulating characteristic by setting the discharge angle of a raw liquid for spinning at 20-40 deg. relative to a nozzle plane and spinning draft ratio at 0.9-1.5. CONSTITUTION:The copolymer contg. 50-97wt% acrylonitrile is dissolved in an org. solvent such as DMF, DMA or DMSO to prepare the raw liquid for spinning. The shape of the spinning orifice is made into a triangular shape and the discharge angle is required to be set at 20-40 deg. relative to the nozzle plane. The raw liquid is wet spun at 0.9-1.5 spinning draft ratio into a solidifying bath of an aq. solvent soln. of an acrylonitrile copolymer contg. >=55wt% water. The spun fiber is in succession subjected to stretching, drying and relaxation treatment.