Feb 15, 2019
After the injection molding process, defects can be visible on the produced plastic part.
Causes of the most common defects in injection molding where analyzed and grouped by several German institutes.
Based on this research, solutions for each defect are described and summarized in the software InMold Solver.
With the intraweb based software comes a database that allows to add new defects and solutions.
Today the software is available in its version 1.22, in English, German and Thai, to support setters and quality managers, in order to find fast solutions to eliminate defects on plastic parts.
Quality (image 1): InMold Solver software.
Quality (image 2): InMold Solver graphical user interface.
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Feb 18, 2025
After the mold is built it must be checked whether the cooling system of a mold is sealed and working properly. This test is called Leak tightness test. The temperature control circuit is examined for leaks to ensure that no cooling fluid escapes and that heat transfer remains efficient. Common testing methods include pressure testing with air or water as well as leak detection using specialized test fluids. Leaky temperature control circuits can lead to uneven cooling, increased scrap rates, and production disruptions. Regular leak tightness tests help prevent mold damage and ensure consistent part quality. Especially in high-precision applications, flawless temperature control is crucial for maintaining dimensional accuracy in injection-molded parts.
Quality:
Leak test of a circuit with hand pump
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Nov 16, 2018
During the injection molding process, molten plastic is compelled to fill a feeding system and cavity inside the mold. The melt front shows how molten plastic moves inside the mold over time.
The knowledge about this movement helps to evaluate the filling of the mold.
It shows air traps and weld lines for example.
Quality: The change from one color to the next one shown the
Melt front at one timestep.
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
May 25, 2021
In injection molding, the process of finding the best possible setting on the injection molding machine is called mold sampling.
The aim is to find the parameters that ensure the best possible quality for the molded part and compliance with given dimensions and tolerances
It is important that the setting of the parameters is always reproducible, i.e. controllable. In this context, the documentation of the parameters found therefore has top priority.
Systematic tool sampling ensures an economical process, high-quality parts and a trouble-free series process.
Quality assurance: Documentation of the process parameters via the IMG programme
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Nov 11, 2021
is a short for a parameter that was defined to determine how well and effectively a specific production equipment is used.
OEE means Overall Equipment Effictiveness.
The parameter indicates the maximum possible output in defined production intervals.
This corresponds to the real productivity in percent.
The calculation is made by multiplying the factors availability (A) in percent, the performance (P) in percent, and the quality (Q) of the manufactured parts in percent.
This results in the formula to:
OEE = A * P Q
Example:
Availablility (0,85) x Performance (0,90) x Quality (0,985) = 0,75 OEE by means 75%
A (theoretical value) OEE of 100% means that there is 100% availability of an production equipment in a production.
This means that there are no production failures, a cycle time to speed performance of 100% and also 100% production of good parts.
![Overall Equipment Effectiveness [OEE] in Injection Molding](https://www.plexpert.ca/wp-content/uploads/2021/11/oee_information.png%0A "Overall Equipment Effectiveness [OEE] in Plastic Industry")
Quality Assurance: Formula to calculate the parameter OEE
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Efficiency
Productivity
Utilization
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
