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PTFE Tape As Release Layer in FRP Hot Press Curing

Views: 0     Author: Site Editor     Publish Time: 2026-05-08      Origin: Site

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Jiangsu Aokai New Materials, a source manufacturer of PTFE high-temperature adhesive tape, gives you a professional introduction. In the hot press curing process of Fiberglass Reinforced Plastic (FRP), PTFE high-temperature adhesive tape serves as an excellent release layer. Thanks to its outstanding non-stick demolding performance and extremely high reusable service life with proper maintenance, it has become a mainstream solution in the industry.

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It should be noted that the reusable times of the tape are closely related to product type, process parameters and daily maintenance.

Its core demolding mechanism lies in the extremely low surface energy of the PTFE coating (only about 18 mN/m), which makes it difficult for molten resin to wet the contact surface. The actual reusable times in practical application mainly depend on the following factors:

 

Influencing Factor Category

Key Control Points & Recommendations

Temperature Control

The continuous working temperature of the tape shall not exceed 260°C (short-term peak temperature shall not exceed 300°C). Long-term operation at extreme high temperature will accelerate the aging and wear of PTFE.

Pressure & Mechanical Stress

Adopt tape models with high-strength fiberglass cloth substrate and tear resistance, which can effectively withstand high pressure and tensile force during mold opening and closing, avoiding premature scrapping caused by tape damage.

Chemical Compatibility

PTFE itself features excellent chemical stability, while the key lies in the selection of adhesive. For long-term contact with strong acid, alkali or organic solvents, adhesives with better chemical resistance such as silicone or perfluorinated adhesive must be selected to prevent peeling caused by adhesive failure.

Cleaning & Maintenance

After each demolding, promptly remove residual resin debris and contaminants on the surface with non-corrosive solvents such as alcohol. A clean surface is the key to maintaining its non-stick property.

Based on the above factors, the estimated service life under different working conditions is as follows:

· Severe Working Conditions (Temperature>200°C, high pressure, frequent use): 10 ~ 200 times

· Conventional Working Conditions (Moderate temperature, stable pressure, careful maintenance): 200 ~ 500 times

· Ideal/Mild Working Conditions (Low pressure, temperature<150°C, intermittent use): More than 500 times

To achieve a higher reuse rate of PTFE high-temperature adhesive tape, let the tape stand for 24 hours after pasting, and record its actual service times. It is recommended to replace the tape when it reaches 80% of its expected service life.

The above information is provided by Jiangsu Aokai New Materials Technology Co., Ltd.

If you want to have an in-depth understanding of detailed parameters, application scenarios and customized solutions for our full range of products including PTFE high-temperature cloth, PTFE high-temperature adhesive tape, PTFE high-temperature mesh belt, seamless fusing machine belt, single-sided PTFE coated cloth, high-temperature resistant conveyor belt and high-temperature resistant fiberglass cloth, please contact us via the following ways:

· Service Hotline:Mr. Guo: +86 18944819998  Mr. Liu: +86 13705266308

We always adhere to the service philosophy of professionalism and integrity, and wholeheartedly provide you with one-stop solutions and considerate services!

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Jiangsu Aokai New Material
AoKai PTFE is professional PTFE Coated Fiberglass Fabric Manufacturers and suppliers in China, specialized in providing PTFE Adhesive Tape, PTFE Conveyor Belt, PTFE Mesh Belt. To buy or wholesale PTFE coated fiberglass fabric products. Numerous width, thickness, colors are available customized.

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