Dec 3, 2018
The temperature of the injection molding machine is controlled during the complete cycle.
As the cooling system is always active, the length of the cooling time is not clearly defined.
During the filling, the melt moists the cavity only partly.
This is the reason for the definition of the cooling time from the end of injection until ejection.
That means, the cooling time equals the packing time (green line) plus the residual cooling time (blue line in the time-pressure-diagram).
Jan 9, 2019
Even when the mold halves are exactly centered on top of each other, core shift might happen.
Especially long, thin cores are pushed away due to unbalanced filling.
The unbalanced injection of the melt leads to a one-sided pressure on the core.
The movement results in changing wall thickness in the part.
In the area of reduced wall thickness, the filling is more difficult than in the are with higher wall thickness.
Weaknesses, given by to the changed wall thickness, lead to problems during the usage of the part.
A balanced flow around the core and a hold on both sides of it helps to reduce the risk of core shift.
Nov 4, 2021
is the name of a company that was founded 1995 to develop innovative simulation applications under the name of Moldex3D.
With highly educated software engineers, a clear vision and their own material laboratories, the company is now the leading supplier of true 3D injection molding software.
With more than 11 offices and a large network of re-seller plastic simulation is brought to the door step of the plastic industry all over the world.
CoreTech headquarter in Taiwan (Photo credit:
CoreTech)
Related topics:
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Mar 19, 2026
This term refers to a special network cable in which the transmit and receive wires are cross-wired within the connector. This crossover wiring allows two similar network devices to be connected directly without the need for an intermediate switch or hub. In industrial plastics processing systems, such a cable may be used for direct communication between controllers, machines, or diagnostic equipment. The RJ45 connectors follow the standard used for Ethernet networks and support high-speed data transmission. This enables efficient exchange of machine parameters, process data, and diagnostic information between devices.
Automation technology: Cross-wired
RJ45 cables are usually marked separately.
Related topics:
Ethernet
Machine control
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Dec 3, 2018
The injection molding process contains different stages:
After the injection time (1), the packing time (2) and residual cooling time (3) follow.
The cycle will be completed with the mold movement (open, eject and closing) (4).
When all stages passed one time it is called a cycle and the process starts again.
