PPSU Medical Injection Molding Products

High heat and impact resistance
PPSU is known for its high heat resistance and excellent hydrolytic stability, making it ideal for hot water accessories and medical devices that undergo repeated steam sterilization. It is also specially formulated for aircraft interiors, complying with strict FAA regulations requiring low heat release, minimal smoke generation, and low toxic gas emissions. In addition, PPSU offers cost benefits for less demanding applications.

Key Features:
– High heat deflection temperature (HDT) of 207°C (405°F)
– Excellent toughness and impact strength
– Excellent long-term hydrolytic stability
– Better chemical resistance than PSU and PEI
– Able to withstand over 1,000 steam sterilization cycles without noticeable loss of performance
– Inherently flame retardant
– Transparent and colorable

Applications:
– Sterilization boxes and trays
– Dental and surgical instruments
– Medical injection molding parts devices
– Aircraft interiors
– Airline catering trolleys
– Hot water accessories

Several considerations are critical when selecting steel for molds used in PPSU production. Since mold temperatures during production are typically between 300°C and 400°C, an effective cooling system must be implemented to maintain mold life. Poor cooling can result in excessive mold temperatures, which can adversely affect its service life.

In addition, PPSU has a lower flowability compared to materials such as ABS or PA. To address this, it is important to avoid using point gates and use larger gates to promote better material flow. Finally, producing PPSU molds requires special screws and nozzles in the injection molding machine because the high temperatures involved can damage standard equipment.