Choose a metal conveyor belt when the line runs hot (ovens, fryers, dryers), runs cold with strong airflow (spiral and tunnel freezers), carries heavy or sharp-edged products, or has to follow a turning or self-stacking spiral path. A plastic modular belt is often chosen for ambient or chilled conveying of lighter packaged products, and for lines whose frame, supports and sprockets were designed for plastic modules from the start.
In most projects the machine has already made the decision. Changing belt type is only worth considering when the drive, supports and take-up on that machine are designed for the new belt.
What actually decides metal or plastic?
| Question | Metal belt | Plastic modular belt |
|---|---|---|
| How hot or cold is the process? | Used in baking, frying, drying and freezing lines; the wire material is chosen for the temperature range | Each resin has its own rated range — check the belt maker’s data before running hot or very cold |
| Does air or heat need to pass through? | Open mesh lets air, steam and oil pass; open area is set by pitch and wire size | Open area depends on the module design; many designs are more closed |
| How heavy is the product? | Suits heavy, dense or sharp-edged loads when wire, rod and edge are sized for them | Suits lighter loads within the module’s rated strength |
| Does the belt turn or stack? | Spiral, turning and self-stacking belts are built for this path | Turning plastic belts exist, but the machine must be designed for them |
| How is it cleaned? | Open structure is easy to inspect; stainless grade is chosen for the cleaning chemicals | Hinge and pin areas need attention during cleaning |
| How is it driven? | Sprockets, drums or chain edges matched to the belt pitch | Plastic sprockets matched to the module pitch |
| How is damage repaired? | Damaged sections can be cut out and a matched section joined in | Damaged modules are replaced |
Food applications are possible with both types. An application name is not a food-contact approval: material, cleaning method and the end user’s requirements still have to be checked for each project.
Should a replacement keep the belt type your machine was built for?
If you are replacing a worn belt, the safest path is usually the same belt type, matched to the existing drive and frame. Switching from plastic to metal, or the other way round, can mean new sprockets, new supports, a different tension set-up and a new check of the turning path. That is an engineering change, not a simple swap.
Where does JBL Mesh Belt fit?
JBL Mesh Belt works on metal conveyor belts and sprockets: Spiral Freezer Belt, Self-Stacking Belt, Flat Wire Belt, Eye Link Belt, chain-driven, balanced weave, Z-type ladder, side-driven, plate link, biscuit and compound weave belts, and Sprockets. If your line is designed for a plastic modular belt and should stay that way, we will tell you so rather than push a metal belt onto it.
What should you send for a belt review?
- The machine type: spiral freezer, tunnel freezer, oven, fryer, cooler, washer or another conveyor
- Belt width and overall length, or the conveyor size
- Photos of the current belt: the edge, the drive side and a close-up of the mesh or modules
- The product conveyed, the working temperature and how the line is cleaned
- Your drawing, if you have one
Missing some of these? Send what you have — we will tell you exactly what else is needed.
Metal vs plastic conveyor belt: FAQ
Can I replace a plastic belt with a metal belt on the same conveyor?
Sometimes. It depends on whether the sprockets, supports and take-up can carry a metal belt and whether the turning path suits it. Send photos of the drive and the frame and we will check it before any quotation.
Is stainless steel always the better choice for food lines?
Not automatically. The right material depends on the temperature, the product and the cleaning chemicals. A food application does not by itself mean a food-contact approval for every material or belt.
Which belt type is easier to clean?
Open metal mesh is easy to see through and inspect. Plastic modular belts need attention at the hinges and pins. In both cases the cleaning method should be part of the belt review.
Do I need new sprockets if I change belt type?
Usually yes. The sprocket must match the belt pitch and engagement, so a change of belt type normally means a change of drive components.
What does a metal belt cost compared with plastic?
It depends on the belt type, size, material and quantity. Price, quantity and lead time are confirmed in writing in each quotation.
Send your belt details
Send your belt details — a photo of the old belt is enough to start.
