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
Related topics:
Efficiency
Productivity
Utilization
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Dec 9, 2021
In this case, a tolerance to be maintained is described by two parallel planes or straight lines.
These are spaced at the specified distance and are parallel to the specified reference.
A measured value must lie within these planes or straight lines.
For cylindrical moldings, the tolerance zone is formed by a cylinder with the diameter of the specified tolerance value.
The axis of the cylinder needs to be parallel to the reference.
Quality assurance: The axis of the hole must be within a cylinder of 0.01mm.
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Dec 9, 2021
On technical drawings, this tolerance is specified if it is to apply to surfaces that the toleranced surface is to lie between two planes.
These planes are at the specified distance from each other and are perpendicular to the reference.
If cylinder axes are toleranced, they must lie within an imaginary cylinder with the specified diameter.
The axis of the imaginary cylinder is perpendicular to the reference surface.
Quality assurance:
Tolerance zone through two planes at a distance of 0.06mm from the reference surface A
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Sep 10, 2024
This is a modern field of knowledge that refers to the comprehensive analysis and examination of plastics to identify material properties, damage or defects.
Plastics diagnostics includes methods such as microscopy, spectroscopy, thermal analysis and chemical analyses to determine the composition, structure and possible degradation processes of plastics.
It is often used to identify the causes of material failure and to develop solutions to improve material quality.
Plastics diagnostics play a central role in quality assurance, damage analysis and product development.
It makes it possible to make targeted optimizations in material selection and processing.
Potential weak points can be identified at an early stage and extend the service life of plastic products.
Quality:
Molded part with defects that have led to breakage
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Poisson’s ratio
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
