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How to Choose PS / HIPS Thermoformed Food Trays for food and beverage: A Practical Buyer's Guide

2026-10-02 Plastic News 0 views

Choosing the right thermoformed food trays for food and beverage applications is rarely about the cheapest unit price. It is about sheet material, gauge, tooling and validation matching the way the pack or part is used.

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 food 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 MAP and vacuum lidding options; barrier EVOH/PE structures; 1 to 8 compartment layouts. Materials most often specified are Polyethylene Terephthalate, Polystyrene, Recycled PET, Polypropylene, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.

In the food and beverage sector the decision is usually driven by food contact compliance and migration limits, with seal integrity as a secondary requirement. Typical end uses include fresh produce punnets, dairy tubs, bakery inserts.

Key Material Properties

Typical values for a general purpose grade are listed below; filled, stabilised and speciality compounds will differ.

MaterialDensityTensile strengthService temperature
Polystyrene1.04-1.06 g/cm³30-50 MPa-20°C to 70°C
Polylactic Acid1.24 g/cm³50-60 MPaup to 55°C (HDT)
Recycled PET1.35-1.40 g/cm³45-65 MPa-40°C to 70°C

Polystyrene is frequently the default selection here: HIPS is the default thermoforming sheet for food packaging and appliance liners.

Selection Criteria for food and beverage Projects

  • seal integrity – seal integrity matters because it affects unit cost.
  • barrier performance – barrier performance matters because it affects unit cost.
  • food contact compliance – food contact compliance matters because it affects warranty claims.
  • temperature resistance – temperature resistance matters because it affects assembly.
  • migration limits – migration limits matters because it affects compliance.

Common Grades and Variants

  • Recycled PET based: lower carbon footprint than virgin resin
  • Polyethylene Terephthalate based: excellent barrier to CO2 and moisture
  • Polystyrene based: rigid and glossy
  • Polypropylene based: lowest density among commodity plastics

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.

  • Lidding and map sealing
  • Plug assist forming
  • Thermoforming
  • Die cutting

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 food trays Correctly

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

  1. check the seal integrity at the packing line speed
  2. specify top load for stacked pallets
  3. validate freezer performance if the product is frozen
  4. confirm the migration test for the actual food type
  5. confirm the recycled content is food grade

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.

What is the minimum order quantity for thermoformed food trays?

For standard sizes and colours the minimum is usually one pallet or one production run; for custom tooling the economic minimum depends on the tooling cost amortised over the expected volume. Send us your annual volume and we will calculate the break even point.

Can you produce thermoformed food trays in Polystyrene?

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.

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.

Conclusion

If you are planning a new food and beverage 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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