一. Commonly used materials involved in interior and exterior decoration parts

1. Distribution and function of interior and exterior decorative parts

Distribution: Installed on the body sheet metal, widely distributed inside and outside the body

Function: decoration, function, carrier, safety

Common materials summary: PP, PE, PC, PVC, ABS, PA, PMMA, POM, PF, PU and other composite materials and alloys

2. Material classification and characteristics

Introduction and comparison of commonly used plastic molding methods

Plastic molding processing refers to the process of processing all kinds of polymers manufactured by synthetic resin manufacturers into final plastic products, according to different molding methods of various plastics, can be roughly divided into pressure molding, injection molding, extrusion, blow molding, blister, laminating, lining, foaming and other types.

2. Injection molding process

Process overview:

Injection molding is the injection of molten plastic into

Sealed cavity, cooled and shaped,

After opening the mold, the required plastic product is ejected.

How it Works:

3. Blister molding process

Process overview:

The thermoplastic sheet is heated to its softening point, the sheet is stretched and deformed by vacuum, air pressure, gravity and mechanical force, and then formed in a negative or positive mold, and then cooled, demoulded and trimmed. This processing method is also called vacuum forming or differential pressure forming.

Process schematic diagram:

Advantages and disadvantages of the process:

Advantages: Good surface texture, comfortable feel, good energy absorption, high safety, large freedom of modeling

Disadvantages: the process is complex, the skin is easy to crack, the dimensional stability is poor, and the structural design is difficult

3. Blister molding process - positive molding

Process schematic diagram;

3. Blister Molding Process - Negative Molding (IMG)

3. Blister molding process - no molding

4. Extrusion molding

5. Blow molding