The Poor Glossiness Problem In injection Molding
The products are provided with uneven surface glossiness and are even covered with shades. The causes whereof comprise: […]
Some Suggestions for selecting hot runner system
The injection molding industry generally perceives companies that use hot runner systems as more advanced than companies that use cold runner systems. Often, shops make the decision to use a hot runner without considering a cold runner’s possible cost and quality benefits, or management dictates the decision as part of a cost-savings initiative. [...]
How to evaluate cold runner system in an injection mold
In many cases, the cold runner system is a more viable option. In some applications, it may provide a mold and a process that is capable of producing higher-quality parts. […]
The Overflow And Flash Issue In Injection Molding
During the injection and filling process, the plastic melt enters into the clearance of parting line,clearance of sliding surface of the slide, gap between inserts and holes of ejector pin which are related with mold cavity structure, and overflow thereby occurs […]
How To Solve The Overflow And Flash Issue In Injection Molding
There may be a variety of solutions, especially for some specific situations, but the general solutions include: […]
how to avoid Air Cavitation, Air Bubble and Burn Mark in injection molding
During the process of injection molding, due to the poor exhausting condition of molds, the water vapor in the melt, the air in cavity, the volatile gas from volatile substance in raw materials as well as the material decomposition gas either remain inside the products to form air bubble […]
Optimize molding technics to avoid Air Cavitation, Air Bubble and Burn Mark
As for molding technics. Air bubble or air cavitation may occur in the plastic parts due to improperly-controlled material temperature and mold temperature, overfast injection speed, overlow injection pressure, too large or too small quantity of injection, insufficient dwell, unbalanced or insufficient cooling etc. […]
Injection molding crazing issue
Crazing is silvery white filamentous speckle occurring on the surface or near-surface of injection products along the direction of melt flow. It is resulted from the moving of gas in the resin which is then stored in between the melt and surface wall of cavity and subsequently crushed. […]
Injection molding Solutions for insufficient filling
1 Use plastics with low viscosity and sound fluidity or adjust prescription of plastics and reduce viscosity of melt; 2 Improve barrel temperature, increase injection pressure, raise melt temperature to reduce erection degree, and improve plastication quality; 3 Improve mold temperature and uniformity thereof, raise nozzle temperature and properly set cold-slug well ; 4 Increase [...]
Injection molding problem– Cannot Be Sufficiently Filled
The plastic melt condenses and solidifies before it can smoothly fill in the cavity part far away from the gate or that with thin section, the cavity therefore is insufficiently filled and the shape and structure of the molded products are incomplete, which is intrinsically due to the low fluidity and poor filling capacity of [...]