Porous PTFE Film

Low density porous ptfe film – also known as "expanded PTFE" (ePTFE) is made from pure PTFE film that has been expanded (stretched) under specific and tightly controlled conditions to achieve low dielectric constant and high tensile strength. In coaxial cable designs, the low dielectric constant and dissipation factor contribute to lower signal loss (insertion loss or attenuation).

The low dielectric constant also contributes for higher velocity of propagation. In addition, the nature of the ePTFE allows for greater flexibility on the cable construction. The high mechanical properties help cable manufacturers to improve efficiency in their production process, by enabling faster wrapping speeds. As a binder tape in cable bundles, its low weight and excellent conform ability adds minimal mass and volume to the cable construction.

Porous PTFE Film: The Future of Membrane Technology

As industries continue to demand higher performance from their equipment and products, researchers are turning to new and innovative materials to meet these requirements. One such material is Porous PTFE Film, a type of fluoropolymer with unique qualities that make it ideal for use in a wide range of applications.

Porous PTFE Film is a highly porous material with a controlled pore structure. The pores are typically small, ranging from 0.05 to 20 microns in size, and evenly distributed throughout the film. This pore structure allows for precise control of the permeability and selectivity of the membrane, making it an effective tool for separation, filtration, and purification.

Among the most significant benefits of Porous PTFE Film is its chemical resistance. The material is virtually inert and can withstand exposure to a vast range of corrosive chemicals, including acids, bases, and solvents. It is also stable at high temperatures, making it ideal for use in applications that require thermal stability and durability.

Another advantage of Porous PTFE Film is its high permeability. As a result of its unique pore structure, the material allows for the rapid passage of gases and liquids, making it well-suited for use in filtration and separation processes. Additionally, the material's high porosity and low surface tension allow for easy cleaning and low fouling characteristics.

Applications for Porous PTFE Film are varied and include use in the food and beverage, pharmaceutical, and semiconductor industries. In food and beverage production, Porous PTFE Film is used to remove impurities from liquids such as wine and beer. In the pharmaceutical industry, it is used in the production of drugs and vaccines, while in the semiconductor industry, Porous PTFE Film helps to maintain the purity of wafer processing.

● PTFE(Polytetrafluorethylene)

● Expanded, natural or white

● Thickness:0.051mm - 0.254mm

● Width: 4mm -200mm

● Standard density: 0.5g/cm3-0.9g/cm3

● High temperature and chemical resistance

● Flammability resistivity

● High porosity results in superior dielectric properties

● High tensile strengths that support fast wrapping speeds

● Long joint free lengths

● RoHS and REAH compliant

● Wire and cable insulation for extreme chemical and thermal environments

● Binder tape in cable constructions and wire harnesses

● Dielectric material in coaxial cables

● Convoluted hose constructions

● And more

FAQ：

Customer: How long will it take to make sample?

Foreverseal: It takes around 7 days to arrange samples

Customer: What width of ptfe film do you have?

Foreverseal: 4mm to 200mm, it is customized.

Customer: What is the joint free lengths of ptfe film?

Foreverseal: Above 200m