PFM SCREEN's Polyester Spiral Mesh Belts feature a fully seamless spiral loop structure — flat ribbon monofilament coils interleaved and connected by straight rods, with no seam or weak point anywhere in the belt. Available in polyester (continuous 150°C, heat-set to 200°C) and PPS (continuous 240°C, heat-set to 290°C), with FDA/EC food-contact certification and BPA-free materials. 12 standard configurations cover small, medium, and large loop pitches with air permeability from 4,480 to 10,000 m³/m²h. Widths from 10 cm to 10 m; any circumference. Connecting rod options include round wire, flat wire (maximum open area), and conductive carbon wire (UV printer anti-static applications). Every belt is factory heat-set before delivery. Request your custom specification within 24 hours.
Description
PFM Screen's Polyester Spiral Mesh Belts are engineered from flat ribbon monofilament coils assembled into a completely seamless spiral loop structure. Each pair of adjacent coils is interleaved finger-to-finger and locked together by a straight connecting rod — producing a continuous open-mesh surface with no seam, no woven join, and no weak point across the entire belt width. This unique seamless construction ensures uniform air permeability at every point on the belt, eliminating the seam bulge, uneven airflow, and product marking that affect conventional woven conveyor belts.
Available in polyester (PET) for continuous operation at 150°C and PPS (polyphenylene sulfide) for continuous operation at 240°C, with FDA and EC food-contact certification and BPA-free materials. 12 standard models cover small, medium, and large loop configurations with yarn diameters from 0.5 mm to 1.2 mm, air permeability from 4,480 to 10,000 m³/m²h, and custom widths from 10 cm to 10 m in any circumference.
 Polyester (PET) ● Heat-set to 200°C — continuous use at 150°C ● FDA / EC food-contact certified, BPA-free ● Excellent dimensional stability under continuous tension ● Ideal for food drying, nonwoven forming, UV printing |  PPS (Polyphenylene Sulfide) — High-Temp & Chemical Resistance ● Heat-set to 290°C — continuous use at 240°C ● Superior resistance to acids, alkalis, and organic solvents ● Alkali-resistant PA variant: model PA90110A2 ● Ideal for high-temp industrial dryers and chemical filtration |
The spiral mesh belt's defining advantage is its completely seamless loop — no join, no seam, and no weak point anywhere in the belt. Glued edge treatment reinforces the belt perimeter for tracking stability and extended service life.
 No Seam — Continuous Spiral Loop 100% uniform airflow, zero seam bulge, no product marking — identical belt surface at every point |  Glued Edge — Reinforced Perimeter Durable edge seal for lateral tracking stability and extended perimeter service life |
Every PFM Screen spiral mesh belt undergoes controlled heat-setting before shipment — up to 200°C for polyester and up to 290°C for PPS. This process delivers four critical performance advantages:
01 Locks Dimensions Thermally stabilises belt width and circumference — resists stretch and shrinkage under continuous operating tension | 02 Flat Surface Improves surface flatness and geometric accuracy — ensures even product contact and consistent air distribution | 03 Stronger Fibre Enhances mechanical properties of the monofilament — higher abrasion resistance and longer fatigue life under repeated flexing | 04 Extended Life Significantly reduces belt replacement frequency in continuous production environments — lower total cost of ownership |
12 Standard Models Small, medium, and large loop configurations in polyester and PPS monofilament | 240°C Max. Continuous Temp. (PPS) Heat-set to 290°C — for high-temperature dryers, gypsum lines, and chemical filtration | 10 m Max. Custom Belt Width Manufactured to any width from 10 cm to 10 m and to any required circumference |
0.5 – 1.2 mm Yarn Diameter Range Fine small-loop models to heavy-duty large-loop configurations | 10,000 m³/m²h Max. Air Permeability Model 6890B5 with conductive carbon wire rod — highest open area in the range | 2,600 N/cm Max. Belt Strength Large loop model 120130A1 — highest tensile strength in the range |
Need a Custom Polyester Spiral Mesh Belt? Tell us your loop size, material, belt width, circumference, and working temperature — our engineers will confirm the exact configuration and quotation within 24 hours. WhatsApp: +86 153 6967 9157Email: polyestermesh@pfmscreen.com |
Feature
Fully Seamless Spiral Loop Structure Flat ribbon monofilament coils interleaved finger-to-finger and locked by straight connecting rods — producing a 100% seamless belt with no join, no seam, and no weak point. Uniform air permeability across the full belt width. Eliminates the seam bulge, uneven airflow, and product marking that affect conventional woven conveyor belts. | Material: Polyester (PET) or PPS Polyester (PET) for standard applications — continuous 150°C, FDA/EC food-grade certified, BPA-free. PPS (polyphenylene sulfide) for high-temperature or chemically aggressive environments — continuous 240°C, excellent resistance to acids, alkalis, and organic solvents. Material is specified at time of order. |
Connecting Rod Options Three rod configurations available: (1) Standard round monofilament wire for all loop sizes and general applications; (2) Flat wire rod — higher open area and air permeability (6890B3: 9,000 m³/m²h; 6890B4: 8,000 m³/m²h); (3) Conductive carbon wire rod (6890B5: 10,000 m³/m²h) — dissipates static charge for UV printer and ESD-sensitive applications. | Custom Width, Any Circumference & Glued Edge Manufactured to any width from 100 mm to 10,000 mm and to any required circumference. Glued (sealed) edge treatment applied for perimeter reinforcement and lateral tracking stability. Field repair is straightforward — damaged sections require only rod removal and replacement without specialist tools or full belt replacement. |
| Comparison Point | Polyester Spiral Mesh Belt | Traditional Woven Belt |
|---|---|---|
| Seam Construction | Completely Seamless | Has Seam Joint |
| Airflow Uniformity | 100% Uniform Across Belt | Reduced at Seam Zone |
| Product Marking Risk | None | Visible at Seam |
| Field Repair | Simple Rod Replacement | Requires Re-Weaving |
| Max. Air Permeability | Up to 10,000 m³/m²h | Lower |
| Custom Width | 10 cm to 10 m | Limited by Loom Width |
FDA/EC Food-Grade Certified Polyester variants comply with FDA 21 CFR (USA) and EC 1935/2004 (Europe). BPA-free. Suitable for direct food contact in drying, washing, and filtration | 2,600 N/cm Max. Belt Strength Large loop model 120130A1 — high tensile strength for heavy-duty drying, wood panel, and industrial filtration under sustained tension | 10,000 m³/m²h Max. Airflow Model 6890B5 conductive carbon wire rod — maximum open area for high-throughput through-air drying and anti-static UV printing |
Non-Stick Smooth Surface Round monofilament coil surface resists product adhesion and releases residues easily. Reduces cleaning frequency and supports HACCP hygiene compliance in food processing environments | Chemical & Moisture Resistance PET resists common industrial chemicals, steam, and moisture. PPS offers superior resistance to acids, alkalis, and solvents at elevated temperatures — suitable for chemical filtration environments | Dimensional Stability Factory heat-setting locks belt dimensions under operating tension. Resists stretch, shrinkage, and distortion — maintaining tracking accuracy and uniform airflow throughout belt service life |
Have a Specific Technical Requirement? Our engineers can advise on the optimal loop size, yarn diameter, material, connecting rod type, and edge treatment for your process. Contact us for a free technical consultation. WhatsApp: +86 153 6967 9157Email: polyestermesh@pfmscreen.com |
Application
PFM Screen's polyester spiral mesh belts serve six major industries. The seamless open-mesh structure delivers uniform airflow for drying and forming, a clean non-stick surface for food contact applications, and the chemical and thermal durability required for industrial filtration and building material production lines.
Food Processing & Drying ● Pasta drying and pasteurization conveyors ● Fruit and vegetable washing and draining ● Dairy filtration and whey drainage ● Seafood transport and handling lines ● Equipment: Proctor, Andritz, Stork, Klingenburg, Frigoscandia | Nonwoven Fabric Production ● Through-air bonding (hot-air) forming belt ● Spunbond and meltblown production lines ● Hydroentanglement (spunlace) forming ● Wetlaid and airlaid nonwoven forming ● Equipment: Reifenhäuser, Oerlikon Neumag, Andritz, Dilo, Perfojet |
Wood Industry ● Veneer drying conveyor belt ● MDF and particle board forming lines ● Steam pre-heater spiral belt ● Wood chip ventilation dryers ● Equipment: Siempelkamp, Dieffenbacher, Binos, Metso, Hymmen | Building Materials ● Gypsum plasterboard drying conveyor ● Fiber cement and mineral board forming ● Mineral wool and glass wool thermal drying ● Equipment: Knauf, Saint-Gobain, Bison, Grenzebach |
UV Flatbed Printer Conveyor Belt ● Substrate transport in UV flatbed printing systems ● Anti-static model 6890B5 (carbon wire rod) — dissipates static charge, prevents sheet displacement and print registration errors ● Flat seamless mesh surface maintains substrate position accuracy on rigid and flexible materials ● Equipment: Roland, Mimaki, Agfa Jeti, Durst, Fujifilm Uvistar, EFI Vutek | Industrial Filtration ● Sludge dewatering and wastewater treatment ● Industrial liquid filtration and solid separation ● PPS alkali-resistant model PA90110A2 for chemical filtration at elevated temperatures ● Equipment: Andritz, Alfa Laval, Komline-Sanderson, Ashbrook Simon-Hartley |
 Nonwoven forming line application |  Industrial dryer conveyor application |  UV flatbed printer conveyor application |
Industries & Applications Served by PFM Screen Spiral Mesh Belts Food DryingPasta PasteurizationVegetable WashingDairy FiltrationSeafood HandlingNonwoven FormingHot-Air BondingSpunlace / SpunbondVeneer DryingMDF Board FormingGypsum PlasterboardUV Printer ConveyorAnti-Static BeltSludge DewateringChemical FiltrationPPS High-Temp Processing |
Tell Us Your Machine Type and Application Share your machine brand, required belt width, circumference, and working temperature — our engineers will match the correct loop size, material, and rod configuration and respond within 24 hours. WhatsApp: +86 153 6967 9157Email: polyestermesh@pfmscreen.com |
Specifications
12 standard models covering small, medium, and large loop configurations. Loop size determines mesh opening, air permeability, and belt strength. Use this guide to identify the right starting point, then refer to the full specification table below. Custom loop sizes, materials, and rod configurations are available on request.
| If Your Requirement Is... | Loop Size | Recommended Model(s) |
|---|---|---|
| Fine mesh for UV printer or precision filtration | Small | 5080A1 — 4,480 m³/m²h, 0.5 mm yarn |
| General food drying, nonwoven forming, standard filtration | Medium | 6890A1, 6890B1, 6890B2 — 5,760–7,750 m³/m²h |
| Maximum air permeability (flat wire rod) | Medium | 6890B3 (flat wire, 9,000 m³/m²h) · 6890B4 (flat wire, 8,000 m³/m²h) |
| Anti-static / UV printer / ESD-safe application | Medium | 6890B5 — Conductive Carbon Wire Rod, 10,000 m³/m²h |
| Heavy-duty industrial drying, high belt strength | Large | 9090A1, 90110A1, 10090A1, 120130A1 |
| Chemical resistance at high temperature (PPS material) | Large | PA90110A2 — Alkali-Resistant PPS, continuous use at 240°C |
12 standard models. All specifications subject to confirmation at time of order. Yarn diameter range: 0.5 mm to 1.2 mm. Belt strength range: 1,800 to 2,600 N/cm. Custom loop sizes, materials, and connecting rod configurations available on request.
| Loop Size | Model No. | Loop Width (mm) | Filament Diameter (mm) | Strength (N/cm) | Weight (kg/m²) | Thickness (mm) | Air Perm. (m³/m²h) | CFM (127Pa) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Spiral Ring | Conn. Wire | Filler Spec. | ||||||||
| Small | 5080A1 | 5.2 | 0.5 | 0.8 | 0.60×3 | 1,800 | 1.5 | 2.1 | 4,480 | 280 |
| Medium | 6890A1 | 8.0 | 0.68 | 0.9 | 0.80×4 | 2,000 | 2.0 | 2.45 | 6,080 | 380 |
| Medium | 6890B1 | 7.15 | 0.68 | 0.9 | 0.90×3 | 2,000 | 1.9 | 2.45 | 5,760 | 360 |
| Medium | 6890B2 | 7.15 | 0.68 | 0.9 | 0.80×3 | 2,000 | 1.85 | 2.45 | 7,750 | 484 |
| Medium | 6890B3 | 7.15 | 0.68 | 0.9 | Flat Wire 2.1×0.80 | 2,000 | 1.8 | 2.45 | 9,000 | 563 |
| Medium | 6890B4 | 7.15 | 0.68 | 0.9 | Flat Wire 2.1×0.88 | 2,000 | 1.85 | 2.45 | 8,000 | 500 |
| Medium | 6890B5 | 7.15 | 0.68 | 0.9 | Conductive Carbon Wire | 2,000 | 1.6 | 2.45 | 10,000 | 625 |
| Large | 9090A1 | 8.0 | 0.9 | 0.9 | 0.90×3 | 2,300 | 2.3 | 3.03 | 7,500 | 468 |
| Large | 90110A1 | 10.0 | 0.9 | 1.1 | 1.0×4 | 2,000 | 2.4 | 3.15 | 6,240 | 390 |
| Large (PPS) | PA90110A2 | 10.0 | 0.9 | 1.1 | 1.2×3 | 2,000 | 2.25 | 3.15 | 6,240 | 390 |
| Large | 10090A1 | 8.0 | 1.0 | 0.9 | 1.0×3 | 2,000 | 2.5 | 3.6 | 5,000 | 315 |
| Large | 120130A1 | Contact* | 1.2 | 1.2 | 1.3 / 1.2×3 | 2,600 | 2.85 | 4.3 | 7,500 | 468 |
* 120130A1 loop width — contact PFM Screen to confirm exact spiral loop pitch for this model. PA90110A2 is manufactured from alkali-resistant PPS material (max. continuous temp. 240°C). All specifications subject to confirmation at time of order. Custom yarn diameters, loop sizes, and connecting rod configurations available on request.
Don't See the Model You Need? Send us your required loop size, belt width, circumference, working temperature, and machine brand — we will match the correct model or manufacture a custom spiral mesh belt to your exact specification within 24 hours. WhatsApp: +86 153 6967 9157Email: polyestermesh@pfmscreen.com |
Q1: What is the difference between a polyester spiral mesh belt and a woven mesh conveyor belt? A spiral mesh belt is built from flat ribbon monofilament coils that are interleaved together and locked by straight connecting rods — creating a belt that is inherently seamless across its full length and width. A woven belt is made by interlacing warp and weft yarns, then joining the two cut ends to form a loop, which creates a seam. The spiral mesh belt has no seam anywhere, giving it perfectly uniform air permeability, no seam bulge, and no risk of product marking at the join point. It is also easier to repair in the field: a damaged section requires only rod removal and replacement rather than re-weaving. |
Q2: What are the temperature limits for polyester and PPS spiral mesh belts? Polyester (PET) spiral mesh belts are factory heat-set at up to 200°C and are rated for continuous operation at 150°C. PPS (polyphenylene sulfide) spiral mesh belts are heat-set at up to 290°C and withstand continuous operation at 240°C. For applications above 150°C — such as high-temperature through-air dryers, gypsum plasterboard drying conveyors, or chemical filtration lines — the PPS material option (e.g. model PA90110A2) should be specified at time of order. |
Q3: Are polyester spiral mesh belts safe for direct food contact? Yes. PFM Screen's polyester spiral mesh belts comply with FDA 21 CFR (USA) and EU EC 1935/2004 (Europe) food-contact regulations and are manufactured from BPA-free monofilament. The smooth round monofilament surface does not harbour bacteria, is non-absorbent, and withstands CIP and high-pressure wash-down cleaning required under HACCP food safety programmes. These belts are used in pasta drying and pasteurisation, fruit and vegetable washing, dairy filtration, seafood handling, and ready-to-eat produce processing lines worldwide. |
Q4: How do I choose between small, medium, and large loop spiral mesh belts? Loop size determines mesh opening, air permeability, and belt strength. Small loops (5080A1: 5.2 mm pitch, 0.5 mm yarn, 4,480 m³/m²h) give the finest mesh and lowest open area — best for UV printer substrate transport and fine filtration. Medium loops (6890 series: 7–8 mm pitch, 0.68 mm yarn, 5,760–10,000 m³/m²h depending on rod type) balance airflow and strength — the most common choice for food drying and nonwoven forming. Large loops (9090–120130 series, 0.9–1.2 mm yarn, 2,000–2,600 N/cm strength) provide the highest belt strength for heavy-duty industrial drying, wood panel lines, and high-tension filtration. If you are unsure, send us your machine type and application — we will recommend the correct model. |
Q5: What connecting rod options are available and how do they affect belt performance? Three connecting rod types are available. Standard round monofilament rod (0.80–1.20 mm diameter) is the default option suitable for most drying, filtration, and conveying applications. Flat wire rod (models 6890B3 and 6890B4) uses a flat rectangular cross-section wire that increases the open area of the belt — model 6890B3 achieves 9,000 m³/m²h and 6890B4 achieves 8,000 m³/m²h, both higher than the standard round-rod models. Conductive carbon wire rod (model 6890B5) dissipates electrostatic charge during operation, achieving 10,000 m³/m²h and making it the preferred choice for UV flatbed printer conveyors and ESD-sensitive production environments. The rod type is specified at time of order. |
Q6: Can polyester spiral mesh belts be used as conveyor belts for UV flatbed printers? Yes — this is an established application for PFM Screen spiral mesh belts. The small loop 5080A1 and the medium loop 6890B5 conductive carbon wire model are both used in UV flatbed printing lines. The seamless flat mesh surface maintains print registration accuracy on both rigid and flexible substrates. The 6890B5 model is specifically recommended where electrostatic charge buildup would otherwise cause sheet displacement or printing defects — the conductive carbon connecting rod dissipates static continuously during belt operation. Please specify your machine brand and bed width when enquiring so we can confirm the correct belt width and configuration. |
Q7: Can spiral mesh belts be manufactured to custom widths and lengths? Yes. PFM Screen manufactures spiral mesh belts to any width from 100 mm (10 cm) to 10,000 mm (10 m) and to any required belt circumference. There are no minimum order quantity restrictions for custom widths. Glued edge treatment is applied to any specified perimeter width for durability and tracking stability. To obtain a quotation, provide: loop size or model number, material (polyester or PPS), connecting rod type, belt width, belt circumference, and machine brand. Quotations are returned within 24 hours. |
Q8: Why does heat-setting matter and how does it affect spiral mesh belt service life? Heat-setting is a controlled thermal treatment applied to every finished belt before shipment. The belt is held at a precise elevated temperature (up to 200°C for polyester, up to 290°C for PPS) under controlled tension, which thermally stabilises the crystalline structure of the monofilament polymer chains. The practical result: the belt resists stretch and shrinkage under continuous conveying tension, maintains a flat and even surface throughout its operating life, and retains its open-area geometry without progressive distortion. Non-heat-set belts tend to narrow in width and elongate under tension, causing tracking problems, uneven airflow, and premature edge wear. Heat-setting significantly extends service life and reduces belt replacement frequency in continuous production environments. |
Ready to Order? Get Your Custom Quote Within 24 Hours PFM Screen has manufactured polyester spiral mesh belts for over 30 years. Send us your loop size, material, belt width, circumference, and machine type — receive a confirmed specification and pricing within one business day. WhatsApp: +86 153 6967 9157Email: polyestermesh@pfmscreen.com |
