In the daily operation of food ambient warehouses, the selection of high speed rolling doors needs to balance multiple requirements such as thermal insulation, durability, safety, and application scenarios. Combining the characteristic comparison between hard spiral high speed doors and PVC high speed doors, the detailed analysis is as follows:
1. Thermal Insulation and Sealing Performance
Thermal Insulation: Adopts a structure of 40mm thick double-layer aluminum alloy door panels + middle polyurethane foam layer. Its thermal insulation performance is significantly better than that of PVC high speed doors (single-layer 0.8-1.2mm PVC material).
The polyurethane foam layer can effectively block external temperature conduction, reduce the exchange of hot and cold air, and is more suitable for food storage environments that require stable temperature control.
Sealing: Through rubber strip sealing and tight fitting of aluminum alloy profiles, it has better dustproof, insect-proof, and sound insulation effects, which can prevent food contamination by dust or odors.
The PVC door curtain is generally 0.8-1.2mm thick (single-layer). It is suitable for workshops that do not require thermal insulation or cold preservation. In addition, the double-row brushes inside the track can isolate dust and insects, but its overall temperature insulation effect is weaker than spiral high speed doors.
Conclusion: Spiral high speed doors have more advantages in thermal insulation and sealing performance, especially suitable for food storage scenarios sensitive to temperature and humidity.
The double-layer aluminum alloy door panels have strong impact resistance. Equipped with protective measures such as safety light curtains and airbag rebound devices, it can effectively prevent forklift collisions or personnel straying into the door area, ensuring higher safety.
The material is corrosion-resistant and flame-retardant (grade B2), with a long service life, making it suitable for high-frequency use environments.
It also has safety protection functions, such as infrared photoelectric sensors and safety airbag at the bottom. However, the PVC material is relatively soft, resulting in weak wind resistance, impact resistance, and poor anti-theft performance. It is more suitable for indoor workshop partitions.
Conclusion: Spiral high speed doors are more suitable for the complex operating environment of food warehouses in terms of safety protection and durability.
Suitable for outdoor areas or regions with large temperature differences (such as cold storage, equipment hoisting ports). Its thermal insulation, windproof, and dustproof functions can cope with complex climate conditions.
Some models support horizontal lying lifting, which reduces space occupation and is suitable for warehouse passages with frequent forklift entry and exit.
More suitable for indoor environments (such as internal partitions of workshops). Its lightweight design has low space requirements, and customized transparent windows can be added to improve lighting and visibility.
Conclusion: For food ambient warehouses close to outdoor areas or requiring frequent connection with transportation equipment, spiral high speed doors are better; if the area is an independent indoor space, PVC high speed doors can also meet basic needs.
II. Comprehensive Recommendations
Priority Selection: Spiral High Speed Door
