Hi, I am new in injection molding. I recently got a cable tie mold (cold runner) made from a domestic mold-maker. (32 cavities, 4*300 mm)
But I am having several problems with the mold:
1. When I try to fill the cavity with nylon 6 at high speed low pressure, the cavities doesn’t fills till the end.
2. When I increase the pressure, there is flash at the gate.
I think the clamping force is not a problem as It is being run on a 350 ton machine.
Is there any way to enhance the flowability of the resin so that it fills till the end without flashing as the melt freezes before it reaches the end of cavity?
Any other suggestion would be great?

Thanks and Regards
Abhishek