Title:
THERMOPLASTIC POLYURETHANE FILAMENT FOR FDM-TYPE 3D PRINTERS
Document Type and Number:
WIPO Patent Application WO/2020/060095
Kind Code:
A1
Abstract:
The present invention presents a thermoplastic polyurethane filament for FDM-type 3D printers, in which, when manufacturing a thermoplastic filament for FDM-type 3D printers, a thermoplastic polyurethane composition is blended with nanosilica having a primary particle size of 100 nm or less and including hydrophobic functional groups on the surface thereof, and thus, the spray amount of the thermoplastic polyurethane filament melt-extruded via nozzles is always kept constant regardless of a change in the temperature of printer nozzles during a 3D printing operation, thereby enhancing the dimensional stability and precision of molded products during 3D melt lamination. Also, when the thermoplastic polyurethane filament melt-sprayed via the printer nozzles is sprayed onto a printer output plate and melt-laminated, the cooling rate of the thermoplastic polyurethane filament is increased to prevent laminated layers from collapsing.
Inventors:
PARK HEEDAE (KR)
Application Number:
PCT/KR2019/011672
Publication Date:
March 26, 2020
Filing Date:
September 10, 2019
Export Citation:
Assignee:
PARK HEEDAE (KR)
International Classes:
D01F6/70; B29C64/118; C08G18/34; C08J5/00; C08K3/36; C08L75/04; D01D5/08; D01F1/10
Domestic Patent References:
| WO2015120430A1 | 2015-08-13 | |||
| WO2017161120A1 | 2017-09-21 |
Foreign References:
| US20170327704A1 | 2017-11-16 | |||
| KR20180039546A | 2018-04-18 | |||
| CN106751906A | 2017-05-31 |
Attorney, Agent or Firm:
LEE, Joongseop (KR)
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