Skived PTFE virgin film: unique fibrillar microporous structure and excellent performance

As a special form of PTFE material, skived PTFE virgin film has demonstrated extraordinary waterproof and breathable properties with its unique fibrillar microporous structure and extremely high porosity, bringing revolutionary changes to many fields.

The preparation process of skived PTFE virgin film is a complex process that combines precision machining and polymer material science. Through special turning technology, PTFE blocks are processed into extremely thin membranes. During this process, PTFE molecular chains are oriented under the action of mechanical force to form a unique fibrillar structure. This structure not only gives the film extremely high mechanical strength, but more importantly, it creates a highly ordered and interconnected microporous network. The diameter of these micropores is extremely small, usually at the nanometer to micrometer level, but they can be arranged in a delicate way, allowing air molecules to shuttle freely between them, while liquids and larger particles are effectively blocked out.

The porosity is as high as 85%, which is one of the most striking characteristics of skived PTFE virgin film. This data means that more than 85% of the total volume of the film is made up of these tiny pores. Such a high porosity not only greatly improves the air permeability of the film, but also gives it excellent lightweight characteristics, which is undoubtedly a huge advantage for application scenarios that require both high strength and low weight.

It is the existence of these micropores that makes the original polytetrafluoroethylene film from turning show excellent performance in waterproof and breathable. The water vapor molecules in the air, because their size is much smaller than the diameter of the micropores, can pass through the film smoothly to achieve effective breathability. However, liquids such as rainwater and oil, as well as particles such as dust and bacteria, are effectively blocked by the microporous structure on the surface of the film due to their large volume, thus ensuring the dryness and cleanliness of the interior. This characteristic of "only allowing air to circulate and preventing liquids and particles from passing through" makes the original polytetrafluoroethylene film from turning widely used in many fields such as outdoor clothing, medical protection, building waterproofing, and electronic packaging.

In the field of outdoor clothing, waterproof and breathable fabrics made from skived polytetrafluoroethylene virgin film can keep the wearer dry and comfortable in adverse weather conditions, preventing rainwater from penetrating and ensuring the timely discharge of sweat, greatly improving the comfort and safety of outdoor activities. In terms of medical protection, the film is used to manufacture surgical gowns, protective clothing, etc., effectively isolating microorganisms such as viruses and bacteria, while ensuring smooth breathing for medical staff, providing strong support for epidemic prevention and control. In addition, in the field of building waterproofing and electronic packaging, skived polytetrafluoroethylene virgin film provides a solid guarantee for the long-term protection of buildings and the reliable operation of electronic products with its excellent waterproof breathability and chemical stability.