Compression molding process – Advantages and disadvantages

Application:

1. The method is equally applicable to both thermosetting polymers and thermoplastic polymers.

composites.

2. A wide spectrum of applications ranging from kitchen products to automobiles, toys, electrical items and aircraft parts.

3. Typical products include automobile dashboards, roofs, lifeguard gates, battery trays, fenders, hoods, bumpers, spoilers, air deflectors, furniture, kitchen bowls and trays, tableware, buttons, containers large, recreational vehicle body panels, medical equipment (ultrasound equipment).

Advantages of the Compression Molding Process

1. The production rate is high as the mold cycle time is a few minutes.

2. Good surface finish with different texture and style can be achieved.

3. High part uniformity is achieved with the compression molding process.

4. Good flexibility in part design is possible.

5. Extra features such as inserts, protrusions and accessories can be molded during processing.

6. Raw material waste is minimal.

7. Maintenance cost is low.

8. Residual stresses are absent or negligible in the molded component.

9. The twist and shrinkage of the product are reduced, so the dimensional accuracy is good.

Disadvantages of the compression molding process

1. Due to expensive machines and parts, the initial capital investment associated with compression molding is high.

2. The process is suitable for high volume production. It is not economical for making a small number of parts or for prototyping applications.

3. It is a laborious process.

4. Sometimes secondary processing (trimming, machining) of the product is required after compression molding.

5. Sometimes there are irregular parting lines.

6. There is limitation on the depth of the mold.