Compression molding polyurethane is a manufacturing process. In this process, polyurethane materials are placed in a mold cavity. Pressure and heat are then applied. This causes the polyurethane to flow and take the shape of the mold, creating polyurethane products with various shapes and properties.
Polyurethane and Silicone rubber Compression Molding Manufacturers
Our compression molding services include molding with polyurethane and silicone rubber. Polyurethane compression molding is more suitable for producing parts with larger cross-sectional dimensions, thick walls, high surface finish requirements, and loose dimensional tolerance requirements.
The cost of compression molding molds is lower than injection molding molds, but higher than open casting molds, it very cost-efficient for small batch orders and does not require secondary processing.
1.Compression Molding Process
Put the liquid polyurethane poured into the preheated mold. Through the mold, apply certain pressure and temperature to compress the materials in the mold, make a chemical reaction occur and cure in mold, so as to obtain the products with the desired shape and size.
Compared with other polyurethane molding processes, compression molding usually takes longer production time. The time needed for the reaction of liquid polyurethane and its complete curing can extend the overall production time. Moreover, the amount of waste generated by the compression molding process is higher, and this kind of waste is non-recyclable, which may increase the total cost of producing each part.
2. Compression Molding Polyurethane
If your parts have a large cross-sectional area, complex structure, low requirements for dimensional accuracy, a small quantity demand, and a long cycle time, then polyurethane compression molding is definitely the right choice for your project.
We provide professional compression molding services, customized production, and can meet the diverse needs of your project parts.
3. Silicone Compression Moulding
Silicone compression molding is a process where unvulcanized LSR material is put into the cavity of each half of the mold. Then, the mold is assembled, placed in a heated compression press, and vulcanized through a compression molding process to make parts.
We have produced silicone wheels, silicone parts and compression molded parts for OEM customer. We can provide silicone to metal bond. Silicone rubber rollers is used for hot stamp, heat transfer, and heat seal applications.
Case of Compression Molded Polyurethane
1. Polyurethane seal gasket
Polyurethane seals can effectively prevent liquids or gases from leaking from the sealed area, maintaining the pressure, stability and tightness of the medium in the system. They are used for sealing various types of machinery, pipes, valves, pumps and other equipment.
2. Polyurethane bushing
Polyurethane bushes are widely used in the machinery manufacturing industry and the construction field. They can reduce friction and wear, provide a good shock absorption effect, and enhance the stability and load-bearing capacity of components.
3. Silicone Rubber Roller
Silicone rubber rollers can offer good flexibility and elasticity, as well as resistance to wear, aging and chemical corrosion. This helps reduce damage to items during the transmission process. Silicone rubber rollers are often used in the printing industry, the electronics industry, the food processing industry and other working environments that require high temperature resistance.
FAQ for Compression Molding Polyurethane
1. What are the advantages of compression molded polyurethane?
Polyurethane compression molding is ideal choice for parts with relatively simple or flat contours and larger or heavier sizes. No secondary processing is required, and the mold cost is relatively low.
2. What sizes of compression molded polyurethane products can you customize?
We can customize various complex shapes and sizes according to your drawing, as long as you provide detailed specifications.
3. How long is the production cycle of compression molded polyurethane?
The production cycle of compression molding is relatively long, and it specifically depends on the complexity of the product and the quantity of the order.
4. How is the cost of compression molded polyurethane calculated?
The cost of compression molding mainly depends on the size, shape, quantity of the product, as well as the type and quality of the materials used.
5. Can you provided the sample?
Before bulk production, we can provide samples for you so that you can evaluate whether the product meets your requirements.
6. How durable are the compression molded polyurethane products?
It depends on the specific usage environment and working conditions. But generally speaking, polyurethane has good durability.
