The 4 core technical advantages of TPU film directly address the pain points of ventilation bags
TPU film (especially polyether type) is the "durable cornerstone" of ventilation bags:
Stable in a wide temperature range: long-term operation at -40℃~120℃, after 50 high and low temperature cycles, the tensile strength attenuation rate is ≤5%, and there will be no low-temperature brittleness or high-temperature deformation;
Anti-fatigue limit: The dynamic fatigue life is more than 100,000 times. Calculated based on ventilation for 1 hour per day and 10 cycles per minute, the service life is more than 8 years;
Hydrolysis and moisture resistance: The molecular structure of polyether TPU can resist the humid environment of the cabin and avoid embrittlement and cracking caused by hydrolysis. This is a core advantage that polyester TPU and PVC cannot match.
2025-12-15
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The 4 core technical advantages of TPU film directly address the pain points of ventilation bags
1. Aging resistance: automotive-grade “longevity gene”, which will not decay after long-term use
TPU film (especially polyether type) is the "durable cornerstone" of ventilation bags:
Stable in a wide temperature range: long-term operation at -40℃~120℃, after 50 high and low temperature cycles, the tensile strength attenuation rate is ≤5%, and there will be no low-temperature brittleness or high-temperature deformation;
Anti-fatigue limit: The dynamic fatigue life is more than 100,000 times. Calculated based on ventilation for 1 hour per day and 10 cycles per minute, the service life is more than 8 years;
Hydrolysis and moisture resistance: The molecular structure of polyether TPU can resist the humid environment of the cabin and avoid embrittlement and cracking caused by hydrolysis. This is a core advantage that polyester TPU and PVC cannot match.
2. Air tightness: the “key guarantee” for efficient ventilation, no air leakage and no noise reduction
The core function of the ventilation bag is "precise air guidance", and the air tightness of the TPU film is called the "industry benchmark":
Low breathability material: It is almost airtight. With the high-frequency heat sealing process, the weld strength can reach more than 85% of the base material, and the air leakage rate is ≤1%, ensuring that all airflow is delivered to the seat surface. According to actual measurements, the seat can be cooled by 6-8°C;
Silent design: Excellent air tightness avoids howling caused by airflow leakage, and the operating noise is ≤35dB, far exceeding the requirements of "silent cockpit".
3. Environmental compliance: OEMs receive a “green light for review” and meet standards without risk
The automotive industry has increasingly stringent environmental requirements for interior parts, and TPU films are inherently “compliant”:
No harmful substances: does not contain phthalates, halogens and other banned substances, and has passed ROHS and REACH certification;
Low odor and low VOCs: odor level ≤3 (in line with PV3900 standards), VOCs emissions are far below the national standard limit, avoiding the trouble of odor in the car;
Recyclable: The thermoplastic properties support recycling and reprocessing, which is in line with the "green manufacturing" trend in the automotive industry and can easily pass the environmental protection audit of the OEM.
4. Customized adaptation: “Flexible response” to all scenarios to meet diverse needs
The “customization capability” of TPU film perfectly adapts to different models and production needs:
Precise thickness control: 0.15-0.25mm mainstream range, which can be adjusted according to the wind pressure of the ventilation system (0.1-0.3MPa), taking into account both strength and ventilation efficiency;
Function customization: supports prefabricated 0.01-0.1mm micropores (pore density 100-1000 pcs/㎡), surface anti-UV coating, anti-adhesion treatment, and is suitable for 3D mesh composite technology;
Color matching: Black, beige and other seat color films can be customized without affecting the aesthetics of the interior.
