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Design Guide for rPET Thermoformed Point of Sale Display Trays in electronics and electrical: Draft, Radii and Draw Ratio

2026-10-02 Plastic News 0 views

Thermoforming rewards designs that respect how a heated sheet stretches. These rules prevent most tooling rework and most thickness complaints.

Everything here can be checked on a real sample before you commit to a production order.

Product Overview

This category covers a family of products rather than a single item. In practice a buyer defines thermoformed point of sale display trays by three things: the base resin, the format or dimension, and the performance or certification level it has to meet. Typical options in this category include gauge 0.50 to 2.00 mm; multi tier and stepped designs; stackable for transport. Materials most often specified are Polyethylene Terephthalate, Polystyrene, Polyvinyl Chloride, Polypropylene, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.

In the electronics and electrical sector the decision is usually driven by ESD protection and dimensional accuracy, with cleanliness as a secondary requirement. Typical end uses include device inserts, accessory blisters, battery packs.

Key Material Properties

These figures are typical for commercial grades and should be confirmed against the supplier's certificate for your specific lot.

MaterialDensityTensile strengthService temperature
Polyvinyl Chloride1.38-1.45 g/cm³40-55 MPa-10°C to 60°C
Polypropylene0.90-0.91 g/cm³25-40 MPa-10°C to 100°C
Recycled PET1.35-1.40 g/cm³45-65 MPa-40°C to 70°C

Recycled PET is frequently the default selection here: Food-grade rPET requires a recognised recycling process plus solid-state polycondensation.

Design Rules for Thermoformed Parts

Apply these points before the tool is cut; after that every change costs tooling and time.

  • Design uniform wall thickness by avoiding abrupt depth changes in the same cavity.
  • Make corner radii at least equal to the sheet thickness; sharp corners are where holes start.
  • Add ribs, steps or kiss-offs instead of increasing overall gauge to gain stiffness.
  • Use a draft angle of at least 3 degrees per side so the part releases without vacuum locks.
  • Leave a flat sealing flange of at least 6 mm when the pack has to be heat sealed or lidded.
  • Keep the draw ratio moderate: deep cavities thin the sheet and force you to start with a thicker gauge.

Send these rules to your designer together with the sheet gauge and the target cycle time; most tooling modifications come from ignoring draft and corner radii.

Common Grades and Variants

  • Polystyrene based: rigid and glossy
  • Polyvinyl Chloride based: inherently flame retardant
  • Recycled PET based: lower carbon footprint than virgin resin
  • Polyethylene Terephthalate based: excellent barrier to CO2 and moisture

Beyond the base resin, most suppliers offer UV stabilised, food contact, flame retardant, anti-static and recycled content versions of the same product. Ask which additive package is included, because it is often the difference between a part that lasts three years and one that lasts ten.

Processing and Finishing Options

Processing method drives both cost and performance, so it should be fixed early in the design.

  • Pressure forming
  • Printing
  • Die cutting
  • Assembly

Secondary operations such as printing, welding, machining and assembly are often cheaper to do in the same factory, and they reduce the risk of mismatch between components.

How to Specify Thermoformed point of sale display trays Correctly

Work through these points in order and most specification mistakes disappear.

  1. validate print adhesion and abrasion
  2. use one colour reference for the whole campaign
  3. confirm the display location and lighting conditions
  4. design for flat packing to cut freight
  5. check stack strength for the loaded display

Send this list to your supplier with the drawing and you will receive comparable quotations from every factory you contact.

Frequently Asked Questions

How long does tooling and sampling take?

A new tool typically takes 25 to 45 days depending on cavity count and complexity, followed by T1 samples within one week. Existing tools can usually start production within 10 to 15 days of order confirmation.

How do you control colour consistency?

Colour is controlled with a masterbatch reference approved by the customer, and every production lot is checked against the approved sample under standard lighting before shipment.

What packing and shipping options are available?

Standard packing is export cartons on fumigation-free pallets, with custom labelling, barcode and retail packing available. We also handle consolidated containers and door to door delivery.

Can you produce thermoformed point of sale display trays in Recycled PET?

Yes. {mat1} is one of our regular materials for this item, and we can supply virgin, modified and certified grades with full traceability. Material certificates and test reports are issued per batch.

Do you offer samples?

Yes. Standard samples are normally free of charge and shipped within three working days; custom samples are charged at cost and credited against the first production order.

Conclusion

If you are planning a new electronics and electrical project, send us your drawing, annual volume and target properties, and we will come back with a material proposal, a tooling plan and a budget quotation.

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