Primary process: Deep Drawing. The full route, materials, tolerances and design tips for a thermos liner, with an indicative cost.
Deep DrawingPrimary process
Sheet formingFamily
7Route steps
+/-0.2mmTypical tol.
A thermos liner is primarily made by Deep Drawing. Deep drawing pushes a sheet blank into a die with a punch to form a seamless cup or box far deeper than the sheet is thick. Below is the full route to make a thermos liner, the materials it suits, the tolerances to expect and the main design points. The route is free, from the finder.
Step by step
How a thermos liner is made
The usual route, raw material to finished part. The amber step is where the thermos liner gets its basic shape.
Material
Select the sheet grade and gauge for the thermos liner.
Blanking
Cut the flat blank, by laser for low volume or a blanking die at scale.
Tooling Low (laser) to high (die) Tolerance ±0.05 to 0.3mm Lead days to weeks
Deep Drawing
Form the blank into the thermos liner.
Tooling High (die set) Tolerance ±0.1 to 0.5mm Lead 10 to 20 weeks
Secondary features
Punch or drill the holes and cut-outs the part needs.
Tooling None Tolerance ±0.05 to 0.2mm Lead hours to days
Joining
Spot weld, fasten or bond into the assembly where the thermos liner is more than one piece.
Tooling Medium Tolerance joint Lead immediate
Finish
Deburr the edges and powder coat or plate for protection and colour.
Tooling Low Tolerance adds 0.05 to 0.2mm Lead days
Inspection
Check formed dimensions, hole positions and flatness.
Need the real cost for a thermos liner? The free route above is yours. Unlock the full dossier to quote and source it.
Where this process typically lands. Tighter is possible with extra operations like grinding, at higher cost.
Materials
Materials for a thermos liner
Grade
Why it suits this
Deep-draw steel (DC04/DC06)
High formability
Aluminium 1100/3003
Soft, draws well
Stainless 304 DDQ
Corrosion
Design
Design tips
General pointers. The full design-for-manufacturing list for a thermos liner is in the dossier.
Draw ratio too aggressive.Add a draw stage or relax depth.
Sharp corner radii.Increase radii.
Cost
What a thermos liner should cost
Cups, cans, enclosures at high volume; expensive multi-stage tooling, cheap per part once running.
PER-PART COST vs VOLUME
Per-part cost drops as volume spreads tooling and setup over more parts. The exact figures for a thermos liner at your volume, in your currency, are in the dossier.
MODEL EST.
$0.83 to 1.8per part at 1,000 off
A rough ballpark only. The dossier gives should-cost at your exact volume and currency, with the full breakdown.
GET THE FULL DOSSIER
Everything you need to quote and source it
The free route above is yours. To actually put a number on a thermos liner and buy it well:
Should-cost at your exact volume in 12 currencies, with the material, processing, tooling and overhead breakdown
Who to source from, typical MOQ and lead time, and the exact RFQ checklist to send
A quote checker that tells you if a supplier quote is fair, and the red flags to watch
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A thermos liner is primarily made by deep drawing. The route is: Material; Blanking; Deep Drawing; Secondary features; Joining; Finish; Inspection.
What does a thermos liner cost?
It depends on size, tolerance and volume. As a rough ballpark it starts around $0.83 to 1.8 per part at 1,000 off and falls with quantity. The dossier gives should-cost at your exact volume and currency. A model estimate, not a quote.
What material is a thermos liner made from?
Common choices are Deep-draw steel (DC04/DC06); Aluminium 1100/3003; Stainless 304 DDQ.
What is the main process for a thermos liner?
Deep Drawing. Cans, sinks, pots, battery cans and pressure housings in volume.
See the exact route and should-cost for your part
The free finder maps your part to its process and full route. Pro adds should-cost at your volume, sourcing and an RFQ draft.
