TOM Method — 3D Surface Decoration.
Three dimension Overlay Method (TOM) is an advanced thermoforming process that overlays products with decorative, functional, or protective thermoplastic films. It is a proven alternative to painting and chrome plating — delivering superior surface decoration on complex 3D shapes.
What is the TOM method?
TOM (Three dimension Overlay Method) is a vacuum-based thermoforming process that wraps a heated thermoplastic film around a 3D product inside a sealed chamber. The film conforms precisely to the product's surface using atmospheric or compressed air pressure, permanently decorating or protecting it without painting, plating, or adhesives.
Unlike conventional thermoforming where a flat sheet is formed against a mold to create a new part, TOM uses the product itself as the mold. The base product is placed on a table inside a vacuum chamber, and a decoration film is clamped above it. Both halves of the chamber are evacuated, the film is heated by infrared heaters until it softens, and then the table rises to push the product into the film. Atmospheric air (or compressed air for tighter conformity) is released into the upper chamber, pressing the film firmly onto every surface of the product.
The result is a seamless, high-quality surface finish that follows even complex 3D geometries — including undercuts, curves, and textured surfaces. TOM is widely used in automotive, consumer electronics, furniture, medical equipment, and transportation interiors as a cost-effective, environmentally friendly alternative to spray painting and chrome plating.
How does the TOM process work?
The TOM process uses a sealed vacuum chamber with infrared heating to soften a decoration film, then uses atmospheric or compressed air pressure to press the film onto a 3D product — completing the overlay in a single forming cycle.
Product & Film Placement
The base product (substrate) is placed on the table in the lower chamber. The decoration film — printed, textured, or functional — is clamped horizontally between the upper and lower halves of the chamber.
Chamber Sealed & Evacuated
The upper half lowers to seal the chamber. Both the upper and lower halves are evacuated to create a vacuum environment. The film divides the chamber into two isolated pressure zones.
Film Heating
Infrared heaters in the upper chamber heat the decoration film to its softening temperature. The film becomes pliable while remaining suspended horizontally — a slight pressure differential between the two halves counterbalances gravity to prevent sagging.
Product Raised into Film
The table in the lower chamber rises, pushing the product upward into the softened film. The product makes initial contact with the film surface.
Pressure Application (Overlay)
Atmospheric air (or compressed air for tighter conformity) is released into the upper chamber. The pressure differential forces the softened film to wrap tightly around every surface of the product, including curves, undercuts, and textured areas.
Cooling & Removal
The chamber is vented, the upper half rises, and the decorated product is removed. Excess film around the edges is trimmed manually or with a laser trimming machine.
TOM Overlay vs TOM Transfer
TOM supports two decoration modes: Overlay (film remains on the product permanently) and Transfer (film is peeled off, leaving only the decoration layer on the product surface).
| Factor | Overlay | Transfer |
|---|---|---|
| Film After Forming | Remains on product permanently | Peeled off — only decoration layer stays |
| Trimming Required | Yes — excess film trimmed | No — film removed cleanly |
| Surface Protection | Film provides ongoing protection | Hard coating layer can be transferred |
| Typical Finish | Wood grain, carbon fiber, metallic | Chrome-look, decorative patterns |
| Common Applications | Furniture panels, appliance covers | Automotive exterior grilles, trim |
What applications use TOM thermoforming?
TOM is used across automotive, consumer electronics, furniture, medical equipment, and transportation industries as a cost-effective alternative to painting, chrome plating, and manual wrapping.
Automotive Interiors & Exteriors
Dashboard trim, door panels, center consoles, front grilles with chrome-look or wood grain film decoration
Furniture & Interior Design
Bathroom vanity panels, kitchen cabinet fronts, and decorative panels with wood grain, marble, or metallic finishes
Consumer Electronics
Mobile device housings, laptop covers, air conditioner panels, and speaker enclosures with premium surface finishes
Transportation
Bullet train interiors, aircraft cabin panels, and bus interior components with durable, decorative film overlays
Medical Equipment
Nursing care bed components, medical device housings, and equipment panels with hygienic, easy-clean surfaces
Waterproofing & Protection
Using transparent films to waterproof, rustproof, and dustproof products without changing their appearance
Why choose TOM over painting or chrome plating?
No VOC Emissions
Unlike spray painting, TOM uses no solvents or volatile organic compounds — making it environmentally compliant and safer for workers.
Complex 3D Shapes
Film conforms to undercuts, curves, and textured surfaces that are difficult or impossible to paint uniformly.
Consistent Quality
Every part receives identical decoration — no runs, drips, or orange peel that can occur with painting.
Multi-Functional Films
A single film can provide decoration, UV protection, scratch resistance, waterproofing, and anti-fingerprint properties simultaneously.
Lower Cost at Volume
Eliminates paint booths, drying ovens, and multi-coat processes — reducing capital investment and per-part cost.
Rapid Design Changes
Switching from wood grain to carbon fiber or metallic finish requires only a film change — no retooling or paint reformulation.
Need 3D Surface Decoration?
Tell us about your product, substrate material, desired finish, and production volume. Our engineering team will recommend the right TOM thermoforming configuration for your application.