Views: 30 Author: Site Editor Publish Time: 2021-02-05 Origin: Site
Rubber materials and rubber molding process technology Introduction !
Molded rubber products manufacturer of precision & custom molded rubber products
CFDPLAS specializes in the design and manufacturing of custom molded rubber and plastic products for our customers worldwide. From concept to finished molded component,CFDPLAS’s team of knowledgeable professionals works to ensure excellence in the product we deliver to our customers.CFDPLAS support customers with product design,material development, prototyping and production of precision molded rubber components.
CFDPLAS Rubber Engineering & Design Support:
CFDPLAS offers full engineering and design support for precision molded rubber and rubber to metal bonded components.
CFDPLAS Rubber Materials, Custom Compounding & Testing:
CFDPLAS develops innovative materials to meet customer's application requirements or improve product performance.
CFDPLAS Rubber Molding Processes Introduction:
Each rubber manufacturing process has unique advantages and disadvantages.
Our team's experience allows us to help customers determine which rubber molding process is the correct process for the application.
• Rubber Injection Molding
• Compression Molding
• Rubber Transfer Molding
• Liquid Injection Silicone Molding
Rubber Compression Molding
CFDPLAS utilizes the rubber compression molding process to produce a range of precision rubber molded components. The benefits of rubber compression molding are realized in a number of areas from low to medium volume applications and for some specialty high volume components.
Products produced from CFDPLAS proprietary compression molding process can be designed to be high precision, low waste, and near flash-less out of the mold.
Our team's experience with rubber compression molding and other rubber manufacturing methods allows us to help our customers determine if compression molding is the correct process for the application.
CFDPLAS Rubber Compression Molding Process Description:
The rubber compression molding process begins with a piece of uncured rubber which has been performed to a controlled weight and shape. This preform is placed directly into the rubber mold cavity prior to mold closure. As the mold is closed, the material is compressed between the plates causing the compound to flow to fills the cavity. The material is held in the mold under high pressure and elevated temperature to activate the cure system in the rubber compound (rubber is vulcanized). The cycle time is established to reach an optimal level of cure. At the end of the cycle, the parts are removed or ejected from the cavities and the next cycle begins.
Advantages of Rubber Compression Molding:
Tooling can be less complex and lower cost to construct
Lower percentage material runner scrape vs. traditional injection or transfer molding
Process is suitable from most elastomers and cure systems
Disadvantages of Compression Molding vs. other rubber molding methods
Labor for preforming material can add cost
Cycle times may be longer
Rubber Compression Molding Steps:
1.) Uncured rubber is preformed to control weight, shape and specification
2.) Rubber preform is placed into the mold cavity
3.) Rubber molded is closed compressing the rubber to fill the mold's cavities
4.) Mold remains closed under pressure and temperature to reach optimal cure
5.) Compressed rubber parts are removed from the mold and the process is ready to begin again
Common rubber materials:
Natural Rubber（NR）,
Neoprene（CR）,
Nitrile Rubber（NRB）,
Butyl Rubber（IIR）,
Fluororubber（FPM）,
EPDM Rubber（EPDM）,
Styrene Butadiene Rubber（SBR）,
Silicone Rubber（SI）.
