zipper high speed door

High speed roll up doors are extensively used in industrial, commercial, and agricultural settings due to their rapid operation, automatic sensing, energy-saving features, and reliable sealing properties. These doors are designed to provide airtightness, dustproofing, temperature and humidity control, making them ideal for various applications. Among the key factors affecting the sealing performance of high-speed roll-up doors are the sealing structures used, which typically include rubber, brush, and zipper seals. In this article, we will explore these sealing methods and their effectiveness in achieving airtightness and pressure difference resistance.

High Speed Roll Up Doors

Sealing Effects of Different Sealing Methods

All three sealing methods, namely rubber, brush, and zipper, possess dustproof, mosquito-proof, and insect-proof properties. However, their sealing effectiveness may vary. In terms of sealing effect, brush seals are the weakest, followed by zipper seals, and C-type occlusal rubber seals are the strongest.

Achieving Airtightness and Pressure Difference Resistance

When it comes to achieving airtightness and pressure difference resistance, zipper seals and C-type occlusal rubber seals are the most effective options. These sealing methods are particularly suitable for applications where clean buffer zones and dust-free airlock rooms are required, and where there is a need to maintain a certain positive or negative pressure difference between the interior and exterior environments. Weak sealing performance can result in issues such as the door curtain running out of the guide rail or the purification system needing to constantly blow air to maintain an internal pressure closed loop.

High Speed Roll Up Doors

Suitability for Different Industries

Zipper and rubber-sealed fast roll-up doors are particularly suitable for industries with high cleanliness requirements, such as the pharmaceutical and food industries where compliance with Good Manufacturing Practices (GMP) and other cleanliness standards is essential. On the other hand, brush fast doors are suitable for more common workshop passages, and customers can choose the appropriate sealing method based on the cleanliness requirements of their specific workshop.

High Speed Roll Up Doors


In summary, the sealing structures of high-speed roll-up doors play a critical role in achieving airtightness, dustproofing, and pressure difference resistance. Zipper and C-type occlusal rubber seals are recommended for applications where strong sealing performance is required, particularly in industries with high cleanliness standards. Understanding the differences between these sealing methods and selecting the appropriate one for your specific application can help improve energy efficiency, maintain clean environments, and enhance overall performance of high-speed roll-up doors.

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