Views: 0 Author: Site Editor Publish Time: 2025-10-14 Origin: Site
Rubber products are widely used in automobiles, electronics, medical, food, and industrial equipment, and different molding processes will directly affect the appearance, accuracy, cost, and performance of the product. The following is an analysis of three common processes:
1. Compression Molding
Process principle
The mixed rubber raw material is put into the mold cavity, and it flows through high temperature and pressure to fill the mold cavity, and then it is finalized after vulcanization.
Features
Suitable for small and medium batch production
Mold cost is relatively low
Suitable for large size or thick wall parts
Molding takes a long time and requires manual loading and unloading.
application
O-ring, gasket
car shock absorber
thick wall buffer
2. Injection Molding
Process principle
After the rubber raw material is heated and plasticized through the screw, it is injected into the mold at high speed and quickly vulcanized under high pressure.
Features
Suitable for mass production with high degree of automation
Fast molding efficiency and good product consistency
Can produce parts with complex structures and precise dimensions
Mold cost is higher, but unit cost decreases with production volume
application
Precision O-rings and seals
Medical equipment parts
Waterproof plastic parts for electronic products
Small complex parts for automobiles
3. Extrusion Molding
Process principle
The rubber raw material is continuously pushed to the extruder, formed into a continuous cross-sectional shape through a die, and then vulcanized and shaped.
Features
Suitable for long, continuous products
Can be mass produced and highly efficient
Can be combined with secondary processing (cutting, joining, laminating)
Molding accuracy depends on equipment and mold design
application
Rubber tubes, sealing strips, cable sheaths
Car door edge strips, window frame seals
Industrial conveyor belts and sheaths
4. Process comparison list
project | Compression molding | Injection molding | Extrusion molding |
Suitable for output | Small to medium batches | Medium to large quantities | High-volume continuous production |
Mold cost | 低 | 高 | 中 |
Molding efficiency | 慢 | 快 | continuous |
Applicable products | Thick wall parts, gaskets | Precision parts, complex structures | Pipes, strips, sheaths |
degree of automation | 低 | 高 | Middle to high |
Material utilization | 中 | 高 | 高 |
5. How to choose the appropriate process?
Small batch/thick parts/limited mold budget → compression molding
Large batch/high precision/complex structure → Injection molding
Long strip/continuous product/large batch → extrusion molding
6. Our service advantages
Provide compression/injection/extrusion comprehensive rubber molding services
Assist customers in design selection → Prototype → One-stop solution for mass production
With ISO / FDA / RoHS / REACH certification, we can supply food grade, medical grade and industrial grade products.
in conclusion :
The choice of rubber manufacturing process depends not only on product design, but also on output, cost and application scenarios. We can provide the most suitable manufacturing solution based on your needs.
