Manufacturing & Industry

Plastics

In plastics production most defects appear on transparent or translucent surfaces, a difficult problem class for standard imaging.

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Problems we address in this sector

01Defect detection on transparent and translucent surfaces
02Modelling how injection and extrusion parameters affect quality
03Material classification in recycling streams
04Objective measurement of colour and tone deviation

Where it gets difficult

In injection moulding and extrusion, many defects form not on the surface but at the edge or in the geometry of the part: flash, short shots, flow lines, sink marks. On transparent parts a defect becomes visible only under special lighting such as backlight or polarised light.

Quality usually depends on machine parameters. Keeping the inspection record together with mould temperature, pressure and cycle time lets you find the cause of a defect, not just sort the part out.

Approaches we apply

Frequently asked questions

Is defect detection possible on transparent parts?

Yes, but not with standard lighting. A setup in which the defect separates in the image (backlight, polarisation or angled light) is tested during feasibility.

Does the model need retraining when the mould changes?

The model is adapted to the new part geometry. This is fine-tuning with a small number of samples; once the process is defined, a mould change is not a long project.

Can it connect to machine data?

Yes. Inspection decisions can be stored in the same record as machine parameters, which shows which parameter change a rise in defect rate started with.