What material is Automotive Lighting Vent Cap made of - Wuxi Sinceriend New Material Technology Co., Ltd.

1

Common Base Materials

Polypropylene (PP) is the most widely used base material with excellent chemical resistance and good impact toughness.
PP features low density, reducing overall weight of the lighting assembly, and favorable processability for mass production.
Polyethylene (PE), especially HDPE, offers superior moisture resistance and flexibility for a tight fit with the housing.
These materials provide cost-effective solutions while ensuring reliable sealing and air pressure balance.

2

Glass fiber-reinforced polypropylene (GF-PP) significantly improves tensile strength, heat resistance, and dimensional stability.
Ideal for high-temperature regions near the engine due to enhanced performance characteristics.
Composites combining PP with elastomers enhance elasticity and sealing performance.
These materials effectively adapt to thermal expansion and contraction during vehicle operation.

3

Thermoplastic elastomers (TPE) are used where strict dust and water resistance is required.
TPE combines rubber-like elasticity with plastic processability, offering excellent sealing and weather resistance.
For high-end systems, polyamide (PA, nylon) provides high mechanical strength, wear and heat resistance.
PA's relatively high cost limits widespread application but offers premium performance where needed.

4

Growing environmental focus drives use of biodegradable materials like PLA blended with PP.
These materials reduce environmental pollution during disposal while maintaining performance.
Advanced functional materials with antimicrobial properties inhibit bacteria and mold growth.
Such innovations ensure cleanliness and long-term stability of the lighting interior environment.