In automotive ventilation and air conditioning systems, most components are manufactured using black plastic because they are not visible to passengers. The choice of material depends on the specific function, with engineering plastics and composite materials commonly used. For example, a two-part venting sheet may be made from glass fiber-reinforced polypropylene (PP), combined with an injection-molded thermoplastic polyurethane (TPU) or ethylene propylene diene monomer (EPDM) sealing strip. These materials are chosen for their durability, flexibility, and resistance to environmental factors.
However, when it comes to recycling, the presence of rubber components like EPDM seals can create significant challenges. During the shredding process in a granulator, the rubber strips are typically removed through friction. The resulting dust is then separated from the shredded material using electrostatic methods. This allows for a high concentration of PP to be recovered, making the recycling process more efficient. Notably, the black color of the components and their EPDM seals does not interfere with this process, as the separation techniques are designed to handle such variations.
As the automotive industry continues to focus on sustainability and reducing waste, improving the recyclability of these components becomes increasingly important. By refining the separation and processing methods, manufacturers can enhance the value of recycled materials and support a more circular economy. This not only reduces environmental impact but also helps lower production costs in the long run. Ongoing research into better material compatibility and recycling technologies will play a key role in achieving these goals.
High speed shutter door is a rapid operating, anti-crash shutter door for indoor application . The most advantage of this door is that the opening/closing  speed can reach to 0.6-1.8m/s, really fast action a lot than tranditional rollling shutter door. short opening and closing times reduce cooling loss, avoid airflow and enable a smooth operating procedure. They can also be designed in larger dimensions for the mining and aircraft industries.
High speed door can be easily installed, economical,quiet and efficient with electromechanical drive.
This door quickly though in/out open gate, ideal for warehouses,factories, hangars use, widths can be from 2m to 20 meters.
The material of this door are variety: PVC curtain to keep the insdie clean, heavy duty aluminum door with wind-resisitant function can wrok in heavy windy weather, and also the freezer door can be used in cold warehouse or somewhere like that.
Including models are:PVC High Speed Door, Aluminum Spiral High Speed Door, Self-Recovery repair door, Cold Storage Room Fast Door.
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PVC High Speed Door,Aluminum High Speed Door,Spiral High Speed Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hongfadoor.com