Low heat conduction coating with high resin fluidity
Unprecedented rainbow-colored hard thin-film coating most appropriate for resin molding
This shows overwhelmingly low thermal conductivity with remarkably better fluidity of resin than raised die temperature.
Improved fluidity or transcription is expected for molding products with microscopic shape for optical system that requires severe molding conditions.
Injection pressure is decreased by excellent fluidity effects.
Dies or parts for resin molding (of prism sheet or molding dies with microscopic shape)
New technology for improvement of resin molding
The surfaces of the spiral flow molds are variously coated and each flow length of resin is measured by injection molding in the cavity.
Evaluation method of resin fluidity
The spiral flow molds
- Spiral width: 10 mm; Spiral thickness: 1 mm
- Material: Starbucks + Ni-P
- Surface coating: Uncoated (Ni-P), DLC, and SPAT Coat
- Injection machine: J180ELIII-UPS(made by The Japan Steel Works Ltd.)
- Resin specifications:
(1) ZEONOR 1060R (ZEON CORPORATION)
(2) Polycarbonate LC1500 (Idemitsu Petrochemical)
- Molding conditions
Injection pressure Injection rate (1)ZEONOR 175MPa 770cc/s (2)Polycarbonate 175MPa 157cc/s
Comparing the cases of mold temperature change and Coating using the case "Uncoated surface at mold temperature of 80°C" as a benchmark,
The fluidity with SPAT Coat was remarkably better than the raised mold temperature