Set the temperature, pressure, speed, back pressure, melt motor speed is too high to cause decomposition, or pressure, speed is too low, injection time, insufficient pressure, low back pressure, due to the lack of high pressure and insufficient density can not be melted Silver streaks appear in the ... read more
Silver pattern of injection moulded products, including surface bubbles and internal pores. The main cause of defects is the interference of gases (mainly water vapor, decomposition gas, solvent gas, air). The specific reasons are as follows: 1.Machine side: (1) The barrel, the screw wears or the ru... read more
The main reasons and solutions for the uneven color of injection moulded products are as follows: (1) The colorant is poorly diffused, and this often causes a pattern to appear near the gate. (2) The plastic or colorant has poor thermal stability. To stabilize the color tone of the part, it is neces... read more
Melting, silver, cracked polystyrene, transparent parts of plexiglass, sometimes through the light can see some sparkling filament-like silver. These silver streaks are also known as spots or cracks. This is because the stress in the vertical direction of the tensile stress is generated, and the wei... read more
Crystalline plastics shrink more strongly than amorphous plastics. When processing, the amount of material should be increased appropriately, or a replacement agent should be added to the plastic to accelerate crystallization and reduce shrinkage and depression. Processing: (1) The temperature of th... read more
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