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PTFE high-temperature cloth tape, also known as Teflon fiberglass cloth tape, is a high-performance composite industrial adhesive tape. It uses woven fiberglass fabric as the base material. The fabric is impregnated and sintered with PTFE (Polytetrafluoroethylene) dispersion on one or both sides, then coated with high-temperature-resistant silicone pressure-sensitive adhesive, followed by high-temperature curing, slitting and rewinding.
This product combines the high tensile strength and dimensional stability of fiberglass with the heat-resistance, non-stick and chemical-resistant properties of PTFE. Together with the high-temperature adhesive layer, it overcomes the weaknesses of pure PTFE film tape such as low strength and easy tearing. It is a key consumable for high-temperature, non-stick, insulating and corrosion-resistant industrial working conditions.
Main production process: fiberglass grey fabric pretreatment (degreasing and setting) → PTFE dispersion impregnation → high temperature sintering and curing → surface corona treatment → high temperature silicone adhesive coating → secondary curing → precision slitting → inspection and packaging. Precise temperature control ensures uniform coating, stable adhesion and consistent performance for both mass standard production and custom-made orders.
2. Physical and Chemical Properties
| Category | Description |
| Temperature Resistance | Continuous service temperature: -73 ℃ to 260 ℃; short term intermittent peak temperature up to 316 ℃. No brittleness or deformation at low temperature; no melting or adhesive failure at high temperature. Covers most industrial high temperature processes. |
| Non stick Property | Surface friction coefficient: 0.05-0.1. Extremely low surface friction, hardly adheres to resin, glue, plastics, oil and other sticky media. Excellent release and peel performance for easy cleaning. |
| Chemical Resistance | Outstanding chemical stability at room and elevated temperature. Resists strong acids, strong alkalis, most organic solvents and oils. Only attacked by molten alkali metals and elemental fluorine. Stable within pH 0-14 in long-term service. |
| Mechanical Properties | Fiberglass reinforcement provides high tensile strength, good toughness and tear resistance. Excellent dimensional stability; no cracking after bending or wrapping. Suitable for curved surfaces and rollers, far superior to pure PTFE film tape. |
| Electrical Performance | Good insulation, dielectric strength and arc-resistance. Anti-static modified grades are available for electronics applications. |
| Weathering and Ageing Resistance | Resists UV light, moisture and harsh industrial environments. No powdering, cracking or performance loss after long-term use, much longer service life than ordinary industrial tapes |
| Safety | Food-grade versions are non-toxic and odour-free, complying with food-contact standards. The material is flame-retardant and does not support combustion. |
| Re-usability | Balanced adhesion: firm bonding and clean peel-off without residue. Can be reused many times to reduce consumable cost. |
3. Typical Application Fields
| Industry | Main Applications and Functions |
| Packaging Heat-sealing | Protection for heat-sealer bars and hot-knives; anti-stick lining for rollers and conveyor belts of packaging machines. Prevents film sticking during heat sealing, improves seal quality and reduces cleaning frequency. |
| Food Processing | Anti-stick protection for baking moulds, hot-press equipment and filling lines. Serves as isolating layer for food heat-sealing equipment. Non-toxic and hygienic for food production. |
| Electronics & Electrical | High-temperature insulation for PCBs, high-temperature bundling of electronic components and wire harnesses; high-temperature masking for SMT processes; arc-resistance insulation for motors and electrical devices. |
| Machinery Manufacturing | Anti-stick and wear-resistant lining for industrial rollers, conveyor belts and moulds; gap sealing and thermal insulation on high-temperature machine parts, extending component service life. |
| Chemical Industry | Surface protection of equipment, anti-corrosion isolation for pipes and release layer for chemical moulds under acidic, alkaline and organic-solvent conditions, acting as a temporary chemical barrier. |
| Textile Printing & Dyeing | Protection for sizing rollers and heat-setting equipment in printing and dyeing lines. Prevents yarn and fabric adhesion and ensures finished textile quality. |
| General Industry | High-temperature component fixing, outdoor weather-resistant protection, release assistance for precision moulds and other general purpose high-temperature non-stick, insulation and isolation tasks. |
The following table lists common grades, dimensions and matching principles to help customers make an initial selection according to operating temperature, anti stick requirements and application conditions. Custom specifications are available for special working conditions.
4.1 Standard Grades and Specifications
| Model | Thickness (mm) | Temperature Grade | Adhesive Type | Recommended Application |
| PTFE-0.13 | 0.13 | Continuous 260 ℃, short-term 300 ℃ | High-temp silicone adhesive | Thin-layer lamination, electronic insulation, precision heat sealing and small-size mould release. |
| PTFE-0.18 | 0.18 | Continuous 260 ℃, short-term 316 ℃ | High-temp silicone adhesive | General-purpose grade for packaging heat sealing, food-processing equipment and ordinary mechanical protection. |
| PTFE-0.25 | 0.25 | Continuous 280 ℃, short-term 320 ℃ | Heavy-duty high-temp adhesive | High wear resistance, frequent-cycle and high-temperature heavy-load equipment protection. |
| PTFE-0.30 | 0.30 | Continuous 300 ℃, short-term 330 ℃ | High-strength high-temp adhesive | Extreme-temperature, heavy-wear and heavy-duty industrial conditions. |
| Anti-static Grade | 0.18 / 0.25 | Continuous 260 ℃ | Anti-static high-temp adhesive | Precision electronics production, ESD-controlled workshops and flammable-explosive environments. |
| Food-contact Grade | 0.18 / 0.25 | Continuous 260 ℃ | Food-grade silicone adhesive | Food processing, baking and filling applications with direct or indirect food contact. |
Standard widths: 10 mm, 20 mm, 30 mm, 50 mm, 100 mm, 200 mm, 300 mm, 500 mm. Standard roll lengths: 10 m, 20 m, 36 m (standard industrial roll). Custom widths, lengths and die-cut shapes can be produced to match equipment dimensions.
Long-term operating temperature above 260 ℃: prefer grades of 0.25 mm or thicker for higher heat resistance and longer wear life.
Release and non-stick applications: select standard or food-grade grades with complete, smooth PTFE surface coating to minimise material residue.
ESD-sensitive electronics: use dedicated anti-static modified grades to avoid electrostatic hazards.
Precision thin-profile bonding: choose the 0.13 mm thin grade for flat, wrinkle-free lamination on precision equipment.
5.1.1 Substrate preparation: thoroughly clean the target surface before lamination. The surface must be dry, free of oil, dust and loose contaminants. Wet or dirty surfaces greatly reduce adhesion and service life.
5.1.2 Lamination procedure: peel off the release liner and apply the tape evenly onto the surface. Press firmly to expel trapped air and eliminate bubbles and wrinkles. When applying on curved surfaces or rollers, lay the tape gently; avoid over-stretching, which may break the adhesive layer, deform the fabric and reduce adhesion.
5.1.3 Curing time: after application, allow the tape to rest at room temperature for 10-20 minutes so the adhesive can fully bond before exposure to high-temperature operation. This improves long-term adhesion stability.
5.1.4 Cutting: use sharp cutting tools to obtain clean edges and prevent fraying for precise fitting.
5.2.1 Cleaning: after the equipment has cooled down, wipe the tape surface with clean water or a mild neutral detergent to remove oil and dust. Never use steel wool or sharp scrapers that can damage the PTFE non-stick coating.
5.2.2 Periodic inspection: for high-frequency production equipment, inspect the tape weekly for edge lifting, surface abrasion, adhesive residue or coating damage. Take timely corrective action when defects appear.
5.2.3 Replacement criteria: replace the tape when non-stick performance declines, frequent material sticking occurs, the adhesive ages or the fabric tears. Timely replacement protects production quality.
5.2.4 Storage: keep unused rolls sealed in a cool, dry and ventilated warehouse at 5-30 ℃. Avoid direct sunlight, high-temperature exposure and damp conditions. Shelf life is 12 months under proper storage.
Do not use in contact with molten alkali metals or elemental fluorine. Do not exceed the maximum service temperature or over-stretch the tape during installation. Do not apply onto rough, rusty or uncleaned substrates.
Driven by automation, precision manufacturing and green industrial upgrading, PTFE high-temperature cloth tape is evolving from general purpose products toward high-end customisation, multi-function integration, environmental-friendliness and extended service life. The main trends are listed below.
6.1 Multi-functional composite grades: single-function non-stick, heat-resistant tapes are being replaced by integrated products combining anti-static, flame-retardant, ultra-wear-resistant and super-hydrophobic properties to satisfy special requirements of new-energy, semiconductor and other high-end industries.
6.2 Preision manufacturing upgrade: low-end coarse production processes are being phased out. High-precision coating, uniform sintering and intelligent quality inspection reduce thickness tolerance and improve consistency of coating and adhesive performance to meet the demands of high-speed automatic production lines.
6.3 Eco-friendly formulation: solvent-free and low-VOC adhesive systems are increasingly adopted. Food-grade and medical-safe grades account for a growing share, meeting stricter industrial environmental and safety regulations for food, medical and precision manufacturing sectors.
6.4 Longer service life and lower total cost: improvements in base-fabric modification, PTFE coating and adhesive chemistry increase wear, ageing and high-temperature resistance. Fewer change-outs reduce overall operating costs for manufacturers.
6.5 Customisation becomes mainstream: personalised products with special dimensions and targeted performance are developed for emerging industries such as new energy, photovoltaic, lithium-ion batteries and semiconductors, continuously expanding application boundaries.
Traditionally, PTFE high-temperature cloth tape was mainly used in packaging, food and general machinery. New fast-growing sectors are opening large new markets.
7.1 New-energy industry: thermal-insulation and anti-stick protection for lithium-battery production equipment; release layers for photovoltaic lamination; high-temperature component protection for wind-power and energy-storage equipment. It is a critical process consumable in precision new-energy manufacturing.
7.2 Semiconductor and precision electronics: high-temperature masking for chip packaging, insulation protection for PCB processing and anti-static thermal shielding for precision electronics, offering low-particle, high-insulation performance for clean-room production.
7.3 Medical industry: food and medical-safe grades are used for high-temperature disinfection protection of medical equipment and release layers for medical consumable manufacturing, satisfying non-toxic and high-temperature sterilisation requirements.
7.4 High-end smart manufacturing: high-temperature conveyor-belt protection on automatic production lines, release layers for precision moulds and thermal shielding for robotic components in smart factories, matching high-speed, high-precision and high-stability production.
7.5 Outdoor special engineering: weather-resistant, anti-corrosion and thermal-insulation protection for photovoltaic power stations, outdoor industrial facilities and rail-transit high-temperature parts, taking advantage of excellent outdoor ageing resistance.
Meanwhile, overseas demand keeps rising. Cost-effective domestic PTFE high-temperature cloth tape is gradually replacing imported products and being exported to Southeast Asia, Europe, the Americas and other regions, with continuously expanding market volume.
PTFE high-temperature cloth tape is a high-performance composite industrial consumable integrating wide-range temperature resistance, non-stick surface, chemical resistance, electrical insulation, wear resistance and weatherability. Its fiberglass-reinforced PTFE structure overcomes the limitations of conventional tapes. It serves as an essential auxiliary material to improve production efficiency in traditional industries including packaging, food, electronics, machinery and chemicals, and also supports emerging high-tech sectors such as new energy, semiconductors and smart manufacturing.
With continuous process optimisation and rising demand from emerging industries, PTFE high-temperature cloth tape is transforming from a general-purpose industrial consumable into a high-end functional material. In the future, the industry will keep moving toward multi-function composites, premium quality, greener production and application-oriented customisation to match the trends of automated, precise and sustainable manufacturing.
Thanks to its unmatched comprehensive performance, PTFE high-temperature cloth tape will continue to deepen its presence in traditional markets and expand into new high-value fields, maintaining steady growth as an indispensable high-performance base material for modern industry.
