What are the advantages and disadvantages of traditional processing technology and new processing technology for automobile interior (dashboard, door panel, steering wheel, etc.)? )?

Main varieties and applications of automobile plastic parts

(1) dashboard

Dashboard: The dashboard currently used can be divided into hard dashboard and soft dashboard.

Light and small trucks generally use hard instrument panels, and PPO, ABS/PC and modified PP materials are used for one-time injection molding. This instrument panel has the advantages of large size, no skin, high surface quality, moisture resistance and good rigidity. Because of multi-point injection molding, it is easy to form flow marks and weld marks, and it is generally necessary to spray paint.

Door inner panel

The structure of traditional automobile door inner panel is mainly composed of skeleton, foam material and skin. Taking Audi car as an example, the frame of the door inner panel is injection-molded by ABS, and then the knitted polyester skin lined with PUR foam material is vacuum-molded on the frame to form a whole. The integral door inner panel made of ABS and PP by injection molding is a revolution in the manufacturing process of door panels in recent years. Using thermoplastic elastomer TPO instead of PVC to manufacture door inner panel skin has become the main development direction. In addition, new materials such as color plastic injection molding integral door inner panel and natural fiber reinforced PP door inner panel have also begun to appear.

seat

Polymer materials on car seats mainly include skin, skeleton and cushion. The skin material can be PVC artificial leather, various chemical fiber textiles, genuine leather, artificial leather, etc. The development direction will be multi-functional composite fiber textiles such as antistatic, sweat-proof and odor-proof. The skeleton material can be GMT material instead of steel material. Foaming cushioning material is made of soft and high elastic PUR molded foam, and there is no other material to replace it for the time being. Considering the comfort of the seat, the density and hardness of the cushion can be changed. For example, the cushion on the backrest of Audi A6 car is made of natural fiber impregnated material, which is characterized by good air permeability. At present, the development direction of chairs is to consider the convenience of disassembly, easy recycling of materials and cost reduction in design.

carpet

The material requirements of car carpet vary greatly according to the level of car models. Most cars use composite molding pads, while trucks, light vehicles and cars with lower grades generally use rubber pads. The appearance of the product should be uniform in color, pattern, luster and feel, and the product should be flat, and there should be no defects such as bubbles and impurities on the visible surface that damage the appearance and performance. At present, carpets made of antibacterial polyester materials tend to be used.