Three Mainly Rubber Molding Process

When we talking about rubber moldings or Custom Rubber Molding,there're mainly three types :

First:
Compression Molding: A original production method for molded rubber. 
It is ideal for low to medium volumes and a useful molding process for forming bulky parts, gaskets, seals and O-rings. It is a widely used, efficient, economical production method for many products particularly low production volumes of medium to large parts, materials with a high cost and applications that demand extreme hardness. 
The process involves compressing preformed rubber in a mold with a press. 
During the compression process, rubber is forced into the mold cavity to form the final product.
Advantage by producing rubber products by compression molding :
-Tooling savings
-Short vulcaninzed time
-Easy to process stiff, high durometer materials,say rubber bellows,viton FKM gaskets
-Least amount of raw material waste
o ringsrubber spacerrubber grommetssilicone washer
compression molded epdm rubberanti-vibration dampers;rubber mount;custom rubber mounting;rubber bufferglass rubber corners sealrubber gasket
Second :
Rubber Injection Molding : An ideal process for forming high volume production, large quantities of small to medium size parts, complex inserts, close dimensional tolerances, insert molding and components that require uniformity. 
Rubber injection molding is particularly suited for products similar to the grommets,complex rubber bush,feet,Rubber Corrugated Sleeve,dust covers.
The process of rapidly forcing an exact amount of rubber from a tube/cylinder into a closed, heated mold. 
This process provides economical advantages including:
-Short molding cycle
-Lower unit cost
-High dimensional tolerances
-Absence of flash
-Little scrap/waste
nitrile rubber bottle stopperrubber dust coversilicone rubber diaphragmrubber corrugated sleeve

Third:
-Rubber Transfer Molding :A method combines the advantages of injection molding with the ease of compression rubber molding.
The process of transfer molding involves pushing unvulcanized rubber through sprues into a heated mold. 
Rubber is placed in a chamber at the top of the mold then placed in a press.
During the transfer process, rubber is forced through the mold to prevent trapped air while forming the final product.
Transfer molding offers several advantages over other methods by providing:
-Shorter production cycles
-Maintains closer dimensional tolerances than compression molding
-Provides uniformity
-Fast mold setup
rubber transfer moldingrubber transfer molding

rubber transfer moldingrubber transfer molding gasket sealings.jpg