04,27,2026 20 views
TR90（PA12 transparent nylon)It is a good material with high transparency, high toughness, and light weight, widely used in fields such as eyeglass frames, sports equipment, automotive transparent parts, medical catheters, etc. But those who have actually done it know that it has several headaches. Unom has launched the TR90 dedicated injection molding machine to address these pain points. Below are four parts to explain clearly.
PART 1
Why does TR90 have to use a dedicated aircraft?
TR90 (PA12) is a highly transparent, food grade, and ultra tough nylon widely used in fields such as eyeglass frames, sports equipment, automotive transparent parts, medical catheters, and food packaging.
Must be dried:Dry at 85 ℃ for 4-8 hours, with a moisture content of less than 0.1%, otherwise it will turn white, froth, and have silver lines.
Narrow temperature range:240-275 ℃, the temperature control of ordinary machines is inaccurate, which can easily cause yellowing or degradation.
High exhaust requirements:Transparent parts are most sensitive to gases, and ordinary machines have insufficient exhaust, resulting in foggy products.
Low yield rate:If there is any problem in the drying, temperature control, or exhaust process, it is a pile of waste.
PART 2
Five core upgrades for the Yunom TR90 aircraft
Dry free direct firing:
raw materialNo need for pre drying, moisture content ≤ 0.2% can also be directly produced. provincedryerSave electricity and time.
High transparency without white mist:
Customized large aspect ratio exhaust screw+dedicated material barrel, multi-stage forced exhaust, moisture and gas do not enter the mold. The product is transparent, free of white mist, silver lines, and bubbles.
Precise temperature control:
The entire machine has 6 independent temperature controls, with a temperature difference of ± 1 ℃, perfectly matching the narrow temperature range of TR90 (230-275 ℃), and long-term production without yellowing or degradation.
Specialized screw barrel:
In response to the low viscosity and easy corrosion characteristics of PA12, a dual alloy barrel and fully rigid screw are used, with low shear and high mixing, making it more durable.
Stable mass production:
Shorten the molding cycle by 15-20% and achieve a yield rate of over 98%; No drying, low energy consumption, and minimal waste, reducing overall costs by over 25%.
PART 3
Applicable products and industries
Optical transparent components: eyeglass frames, sunglasses, lens frames
Automotive field: dashboard transparent cover, lamp seat, interior parts
Medical and health: food grade containers, transparent packaging
Sports equipment: goggles, sports helmets, transparent accessories
