China's automobile industry started in the 1950s, while the automobile decoration industry started in the 1980s. It started with the introduction of localization by Shanghai Santana, FAW-Volkswagen JETTA, and Wuhan Citroën Beverly. The localization projects for the decorative parts of these imported models are also mainly for civilian and general industrial plastic plants, carpet factories, textile factories, adhesive chemical plants, coating chemical plants, and some predecessor factories such as: Shanghai Yanfeng Machine Mould Factory (now Yanfeng Visteon), Shanghai Automobile Carpet Factory, Shandong Wendeng Automobile Carpet Factory, SAIC Motor, Changchun FAW Interior Parts Factory (now Fawer Johnson), Yangzhou Second Plastic Factory, etc. However, this industry developed very rapidly. From 1990 to 2000, the automotive decoration industry blossomed all over the country. A large number of state-owned backbone enterprises and a larger number of small and medium private enterprises have emerged. For example: Shanghai Yanfeng Visteon, Ningbo Huaxiang, Johnson/Lear everywhere, Taiwan Quanxing Sub-factory, Wuhan Yunhe, Changshu Automotive Interior Material Factory, Yantai China Resources, FAW Fawer Johnson, etc.

(4) More engineers jumped from parts factory to main engine factory than from main engine factory to parts factory。

(1) Product structure, materials, standards, and equipment of the dashboard

Professional features of automobile dashboards, interior and exterior trims, dashboard production process:

Skin heating→Skin molding→The skin is put into the lower foaming mold and the skeleton is placed on the upper foaming mold→Pour the PU mixture in proportion and quantitatively (100:42-50)→Clamping and foaming (mold temperature 25-45 ℃)→ After about 7-10 minutes, the mold is opened and the parts are taken, and then the auxiliary work is to cut the edges, make holes, and install some accessories.

Technical requirements for dashboard assembly:

Instrument panel slush plastic skin + PU foam + skeleton

Similar to a type structure, the difference is that the skin is made of PVC powder and slush molding machine. Higher cost, generally used in high-end cars, such as Audi A6.

Modified PP injection molding for dashboard

Other types of dashboard structure:

FRP (including hand lay-up, SMC, long glass fiber casting and molding), ABS plastic + spray paint, sheet metal stamping, etc., are not mainstream or low-grade, and tend to be eliminated. I won't talk about it here.

The positions of the two side defrost openings are usually used to calculate the area on the side windows that needs to be defrosted by using the eye ellipse and the position of the rearview mirror during the general layout. Then roughly calculate the location of the defrost port based on this area and the direction of the wind. 

(1) Product structure, materials, standards and equipment of steering wheel

a. PU self-skin foaming + skeleton molding

This is the current mainstream production process. After the foaming is completed, there is a dense skin on the surface. The skin thickness is 2-3mm, the density is 600-1200kg/m3; the elongation at break is 100-120%; the tearing strength is 4-8.5N/m2;

●Forming equipment: PU foaming machine

●The production process is similar to the dashboard, so I won’t talk more about it. The most important thing is to pay attention to the temperature of the raw materials, the ratio, the uniform mixing, the uniform mold temperature, the selection of the release agent, the quality and variety of the mold skin.

PP or ABS injection molding rigid steering wheel

a. Economical door trim panel: PVC artificial leather + fiberboard

This kind of door panel is still widely used in cheap cars. A set of 4 door inner panels for a pickup truck costs 130 yuan. Adopt high frequency heat sealing machine to compound. Fiberboard requires waterproofing. Water absorption: ≤ 30%

●Molding substrate + adhesive + fabric, and sound-absorbing and heat-insulating materials can be attached to the back.

The production process of carpets and front wall insulation pads is similar to that of ceilings, and they are also pressed by a press and mold. The carpets currently supplied generally have EVA and PE back coatings, which are melted during thermo-compression molding and bonded with the waste spinning felt. There is also a high-grade molded carpet, which is treated with "back foaming process"

The structure of the cover insulation pad is relatively simple, generally a three-layer structure, with about 50-80g/m2 PET non-woven fabric on both sides, and resin glass wool in the middle layer.

China's automobile industry started in the 1950s, while the automobile decoration industry started in the 1980s. It started with the introduction of localization by Shanghai Santana, FAW-Volkswagen JETTA, and Wuhan Citroën Beverly. The localization projects for the decorative parts of these imported models are also mainly for civilian and general industrial plastic plants, carpet factories, textile factories, adhesive chemical plants, coating chemical plants, and some predecessor factories such as: Shanghai Yanfeng Machine Mould Factory (now Yanfeng Visteon), Shanghai Automobile Carpet Factory, Shandong Wendeng Automobile Carpet Factory, SAIC Motor, Changchun FAW Interior Parts Factory (now Fawer Johnson), Yangzhou Second Plastic Factory, etc. However, this industry developed very rapidly. From 1990 to 2000, the automotive decoration industry blossomed all over the country. A large number of state-owned backbone enterprises and a larger number of small and medium private enterprises have emerged. For example: Shanghai Yanfeng Visteon, Ningbo Huaxiang, Johnson/Lear everywhere, Taiwan Quanxing Sub-factory, Wuhan Yunhe, Changshu Automotive Interior Material Factory, Yantai China Resources, FAW Fawer Johnson, etc.

(4) More engineers jumped from parts factory to main engine factory than from main engine factory to parts factory。

(1) Product structure, materials, standards, and equipment of the dashboard

Professional features of automobile dashboards, interior and exterior trims, dashboard production process:

Skin heating→Skin molding→The skin is put into the lower foaming mold and the skeleton is placed on the upper foaming mold→Pour the PU mixture in proportion and quantitatively (100:42-50)→Clamping and foaming (mold temperature 25-45 ℃)→ After about 7-10 minutes, the mold is opened and the parts are taken, and then the auxiliary work is to cut the edges, make holes, and install some accessories.

Technical requirements for dashboard assembly:

Instrument panel slush plastic skin + PU foam + skeleton

Similar to a type structure, the difference is that the skin is made of PVC powder and slush molding machine. Higher cost, generally used in high-end cars, such as Audi A6.

Modified PP injection molding for dashboard

Other types of dashboard structure:

FRP (including hand lay-up, SMC, long glass fiber casting and molding), ABS plastic + spray paint, sheet metal stamping, etc., are not mainstream or low-grade, and tend to be eliminated. I won't talk about it here.

The positions of the two side defrost openings are usually used to calculate the area on the side windows that needs to be defrosted by using the eye ellipse and the position of the rearview mirror during the general layout. Then roughly calculate the location of the defrost port based on this area and the direction of the wind. 

(1) Product structure, materials, standards and equipment of steering wheel

a. PU self-skin foaming + skeleton molding

This is the current mainstream production process. After the foaming is completed, there is a dense skin on the surface. The skin thickness is 2-3mm, the density is 600-1200kg/m3; the elongation at break is 100-120%; the tearing strength is 4-8.5N/m2;

●Forming equipment: PU foaming machine

●The production process is similar to the dashboard, so I won’t talk more about it. The most important thing is to pay attention to the temperature of the raw materials, the ratio, the uniform mixing, the uniform mold temperature, the selection of the release agent, the quality and variety of the mold skin.

PP or ABS injection molding rigid steering wheel

a. Economical door trim panel: PVC artificial leather + fiberboard

This kind of door panel is still widely used in cheap cars. A set of 4 door inner panels for a pickup truck costs 130 yuan. Adopt high frequency heat sealing machine to compound. Fiberboard requires waterproofing. Water absorption: ≤ 30%

●Molding substrate + adhesive + fabric, and sound-absorbing and heat-insulating materials can be attached to the back.

The production process of carpets and front wall insulation pads is similar to that of ceilings, and they are also pressed by a press and mold. The carpets currently supplied generally have EVA and PE back coatings, which are melted during thermo-compression molding and bonded with the waste spinning felt. There is also a high-grade molded carpet, which is treated with "back foaming process"

The structure of the cover insulation pad is relatively simple, generally a three-layer structure, with about 50-80g/m2 PET non-woven fabric on both sides, and resin glass wool in the middle layer.