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Design Guide for rPET Thermoformed Point of Sale Display Trays in cosmetics and personal care: 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.

Use it as a working checklist when you write your next enquiry.

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 printed graphics and logo embossing; stackable for transport; counter and shelf formats. Materials most often specified are Recycled PET, Polyvinyl Chloride, Polypropylene, Polyethylene Terephthalate, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.

In the cosmetics and personal care sector the decision is usually driven by product compatibility and optical clarity, with print quality as a secondary requirement. Typical end uses include travel size packs, razor packs, gift set inserts.

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
Recycled PET1.35-1.40 g/cm³45-65 MPa-40°C to 70°C
Polypropylene0.90-0.91 g/cm³25-40 MPa-10°C to 100°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

Thermoforming rewards designs that respect how the sheet stretches. These rules prevent most tooling rework.

  • Design uniform wall thickness by avoiding abrupt depth changes in the same cavity.
  • Avoid undercuts unless the tool has moving sections, which adds cost to every cycle.
  • Leave a flat sealing flange of at least 6 mm when the pack has to be heat sealed or lidded.
  • Make corner radii at least equal to the sheet thickness; sharp corners are where holes start.
  • Use a draft angle of at least 3 degrees per side so the part releases without vacuum locks.
  • Confirm the trim method early: steel rule die, CNC router or press tool each have different tolerances.

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

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

Each step below has its own control points, and skipping one of them is where most defects start.

  • Assembly
  • Vacuum forming
  • Pressure forming
  • Printing

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

Use this checklist when comparing two or three supplier quotations.

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

Which certifications can you provide?

We can provide ISO 9001 quality system documentation, material certificates, RoHS and REACH statements, and where applicable food contact, flame retardancy or drinking water approvals. Tell us your target market and we will match the document set.

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.

What tolerance can be achieved?

Standard production tolerance follows the relevant ISO or DIN tolerance class for the process; tighter tolerances are possible after machining or grinding, but they add cost. Define the tolerance only on the functional dimensions.

Conclusion

Our team supplies thermoformed point of sale display trays to cosmetics and personal care customers worldwide, with samples, material certificates and full inspection reports available before mass production.

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