Quoting
Get a quote for tooling and the first batch production.
DFM
DFM report will be provided for production confirmation if needed.
Toolmaking
You get free samples per part for your approval.
Production
Your parts go into production after samples are approved.
Quality Control
We use the sample to verify future orders and provide QC checks.
Delivery
What is Compression Molding?
Compression molding is a method of forming plastic or rubber in a closed cavity by heating and hot pressing. It is a good choice for manufacturing large pieces, and low-to-medium quantities production with competitive tooling price.
The molding pressure of the compression molding process is higher than other process methods, and it belongs to high-pressure molding. We utilize hydraulic presses that can control the pressure, and high-strength, high-precision, and high-temperature resistant metal molds to guarantee the quality of molded products. Using the compression molding process, we can guarantee high-efficiency production, and ensure accurate products, and smooth surfaces.
Compression Molding Size Chart
| Description | Metric | Inch |
|---|---|---|
| Length | 3000 | 118 |
| Width | 2500 | 98.4 |
| Height | 2000 | 78.7 |
Compression Molding Materials
In addition to the general materials listed below, Zhongde can also modify the materials according to the special needs of customers. Our professional engineers will adjust the raw material formula to meet the unique conditions of use.
A wide range of rubber materials can be processed by compression molding are listed below:
| NR | CR | FFKM |
| NBR | VMQ | EPDM |
| SBR | FVMQ | IR |
| HNBR | FKM | IIR |
Thermoset plastics and Thermoplastics are two types of material most often used for compression molding. Common types of thermoplastics are UHMWPE, PTFE.
| UHMWPE | PTFE |
TPE compression molding materials are listed below:
| TPE | TPU |
| TPV | TPR |
Compression Molding Surface Finishing
Compression molding surface finish is critical to a successful part design and it is used for aesthetic and functional reasons in injection molded parts for engineering products. The surface finish improves the look and the feel of a product as the perceived value and quality of the product increase with a suitable surface finish.
Different grades of surface finishing chart.
| Name | Description | Link | |
 | Glossy | A-grade finishes are made using a diamond buffing process and yield shiny and glossy surfaces on injection molded parts. | Get A Quote |
 | Semi-glossy | B-grade finishes use grit sandpaper to produce parts with a slightly rougher finish than grade A parts. Custom molded plastic parts that undergo B-grade finishing have a matte surface texture. | Get A Quote |
 | Matte | C-grade finishes use grit sanding stones to produce a rough, uneven surface. Injection plastic parts that undergo C-grade finishing have a matte surface texture. | Get A Quote |
 | Textured | D-grade finishes use grit and dry glass beads or oxide to produce a very rough textured finish. Depending on the type of material used, products can have a satin or dull finish. | Get A Quote |
Our Quality Promise
Zhongde is committed to providing quality products that meet or exceed the needs of our customers through continuous improvement.
Strictly follow the confirmed drawings or samples to produce. If there is any deviation, our company will replenish to our customers to make up for the loss.
Compression Moulding Fundamentals
Custom Compression Molding Process
Compression molding is a tried-and-true method of manufacturing simple pieces. The process starts with giving the amount of uncured material placed into a mold cavity, which is then closed and heated. When the parts have cured, they are removed from the mold.
What is compression molding used for?
Compression moulding is a composite manufacturing process normally used to produce composite components in high production volume, generally used to make larger flat or moderately curved part.
What are advantages of compression molding services?
There are five advantages of compression molding services.
- Less mold structure with competitive tooling price.
- Evenly heated mold cavity with good dimensional stability.
- Little material waste suitable to work with expensive material.
- Available for forming large flat products.
- More than hundreds of colors to choose from.
Why would you choose compression moulding over injection molding?
Compression molding provides a low tool maintenance that makes it easier to run higher volumes with less downtime. It is an ideal process for high volume, simple shape production. Compression molding is also less post printing challenges, and minimal material waste.
What products are made by compression moulding
Compression molding is a process of molding in which a feeding material is placed into an open, heated mold cavity. Many products can be produced by compression molding, such as rubber gasket, handles, automotive parts and many other large size products.
Why Choose Zhongde As A Compression Molding Company
Zhongde, a reputable company providing customized compression molding service, include both plastic and rubber.
Compression Molding Parts
FAQs of Compression Molding Services
What is the service life of the mold?
Generally speaking, one set of molds can produce millions of products, and we will provide mold maintenance and repair services. If the upper limit of mold usage is reached, we will reopen a set of molds for free.
Where is the tooling when my injection mold is done?
As a one-stop rubber and plastic injection molding manufacturer, we will make the tooling by ourselves. As long as you continue to run parts in our facility, we will keep the molds for you and make any necessary repairs or refurbishments at our cost for the life of your mold.
What are types of compression molding?
There are two types of compression molding process, i.e., cold compression and hot compression moldings.
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