In a busy bakery, cookie dough travels through a 260°C tunnel oven directly on the conveyor belt – no greasing, no sticking, no scraping. In a candy factory, hot nougat cools and cuts on a moving surface without stringy residue. In a frozen food plant, dough for egg tart shells glides across a belt at -70°C without embrittlement.
The material making all this possible is PTFE high-temperature fabric – also known as PTFE-coated fiberglass cloth. It combines non-stick release, extreme temperature tolerance (-70°C to 260°C), FDA compliance, and easy cleaning.
Aokai PTFE has supplied PTFE fabric for food conveyor belts across baking, confectionery, meat processing, and packaging. This article covers six major application categories and why PTFE outperforms alternatives.
Bakery & Pastry Production – Most Common Application
PTFE fabric is widely installed inside tunnel ovens, proofing cabinets, and cooling lines.
Application
Why PTFE Works
Biscuit, cookie, bread conveying
Raw dough placed directly on PTFE belts into ovens; baked goods detach automatically. No oil brushing needed; no residual scraps.
Demolding for mooncakes, cakes, waffles
PTFE solid or mesh belts deliver perfect release for high-sugar, sticky pastries; preserve intact product shape.
Pizza crust & egg tart shell continuous forming
Seamless endless PTFE belts provide continuous heat resistance up to 260°C for stable long-run operation.
Key benefit: Eliminates need for parchment paper or oil spraying on belts – reduces consumable costs and cleaning time.
Aokai PTFE produces seamless endless PTFE belts for bakery ovens up to 260°C. Our belts are FDA-compliant and available with or without edge reinforcement for tracking control.
Fried, Roasted & Pan-Fried Food Processing
Belts in these applications endure high heat, grease, oils, and sticky sauces.
Application
Why PTFE Works
Oil-draining conveyors for fried food (chicken fillets, French fries, donuts)
Oil-proof and non-stick to batter – residue rinses off with water easily
No adhesion of skin or sauce – greatly reduces cleaning workload
Microwave extrusion & puffing equipment
PTFE fabric does not absorb microwave energy, stays heat-resistant and non-stick – ideal for prawn crackers, popcorn, puff snacks
Key benefit: Reduces oil absorption into the belt (compared to fabric belts) – extends belt life and lowers oil contamination in product.
Conveyance for Candy & Extra-Sticky Materials
Candy and chocolate tend to stick together before cooling. PTFE fabric brings prominent advantages.
Application
Why PTFE Works
Cooling conveyors for nougat, gummy candy, milk candy
Syrupy candy mass cools, cuts, and transfers on PTFE surface without stringing or sticking
Mesh belts for chocolate enrobing
Transport coated chocolates into cooling tunnels; breathable mesh leaves minimal chocolate residue (easy to reclaim)
Key benefit: Eliminates product waste from sticking – in high-value candy production, this can save thousands of dollars per year.
Drying, Freezing & Dehydration Processing
Application
Why PTFE Works
Dryers for fruits, vegetables, herbal medicines
High-air-permeability PTFE mesh enables strong hot air penetration – perfect for multi-layer continuous drying machines
Pre-freezing feeding conveyors
Freezable dough (egg tart shells, paratha, steamed bun dough) runs on belts; non-sticky to flour and remains flexible at -70°C without embrittlement
Key benefit: PTFE mesh belts allow airflow from both sides – critical for uniform drying and freezing. Solid belts are also available for products requiring full support.
Food Packaging & Heat Sealing Processes
Thinner PTFE fabric or PTFE adhesive tape is used here as a non-stick spacer.
Application
Why PTFE Works
Conveyor belts for heat shrink wrapping machines
Allows smooth passing of wrapping film through heating zones without adhesion to ink or adhesive on shrink film
Liner strips for continuous sealers and vacuum packers
Sandwiched between heating block and packaging bags – stops molten residue from contaminating sealing bars, prolongs machine life
Key benefit: Prevents melted plastic from building up on sealing bars – reduces downtime for cleaning and prevents defective seals.
Roller Wrapping & Guide Strip Fabrication
Wrapping drive/idler rollers of food processing lines with PTFE high-temperature fabric prevents sugar powder and grease buildup that causes belt deviation or slipping.
Application
How It Works
Roller wrapping
PTFE fabric wrapped around rollers prevents sticky residues from accumulating – eliminates belt tracking issues caused by uneven roller diameter
Guide strips
Fabric fabricated into backside guide strips for conveyor tracking correction
Key benefit: Improves belt alignment, reduces edge wear, and prevents costly belt damage from mis-tracking.
Safe for direct food contact – meets regulatory requirements
Easy cleaning
Residue rinses off with water – reduces sanitation labor and chemical use
Mesh belt option
Allows airflow for drying, freezing, and even coating
Seamless endless construction
No splice marks on product – uniform baking/cooling
In summary, PTFE high-temperature fabric is a versatile, proven solution for food conveyor belts across the industry. From 260°C tunnel ovens to -70°C freezing tunnels, from sticky candy to oily fried chicken, PTFE delivers reliable non-stick release, easy cleaning, and long service life. Its FDA compliance and heat/cold tolerance make it the preferred choice for food processing lines worldwide.
When selecting PTFE fabric for your food conveyor application, consider belt construction (solid vs. mesh), thickness, edge finishing, and whether seamless endless is required. For high-abrasion applications (e.g., conveying baked goods with rough bottoms), a heavier-grade PTFE fabric with thicker coating may be specified.
Need a PTFE conveyor belt for your food line? Aokai PTFE offers a full range of PTFE fabrics – solid, mesh, seamless endless, with or without edge reinforcement. Contact us with your product type, temperature range, and belt dimensions for a recommendation.
