Buying Guide
How to Spec Thermoformed Tray Wall Thickness for Retail Food
Buyer guide to thermoformed tray wall thickness for retail food: material, draw depth, thickness targets, seal flanges, nesting, food-contact docs, and RFQ fields for China thermoformers.
Quick answer
Specify thermoformed trays by material, cavity drawing, minimum wall thickness in critical zones, flange design, and sealing/lidding needs—not by a tray photo. Deep draws thin corners; thickness must be measured where the pack fails, not only on the flange.
Start from the fill and seal
State product weight, sealing film or lid type, and whether trays see MAP, hot fill, or chilled distribution. Seal flanges need flatness as much as cavity walls need thickness.
Lock material and thickness
Name PET, PETG, PP, or other grade, sheet gauge, and minimum corner/wall thickness targets. Ask how thickness is measured and sampled in production.
Design for nesting and denesting
Retail lines need consistent nesting without locked stacks. Draft, ribs, and stacking lugs affect both thickness distribution and packing labor.
Validate food-contact and transit
Require declarations for the intended food contact and test crush/denest with real lids. Approve production tools, not only prototype molds.
RFQ
Cavity CAD; material; sheet gauge
Min wall/corner thickness; flange flatness
Lid/seal method; food-contact docs
Nesting trial; tooling ownership; monthly volume
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