Custom rubber molding is the ability to create a design and have it manufactured on the spot by a rubber molding manufacturer. Customized designs are better for certain companies that require unique designs for their needs and new products. There are many other ways to create custom products, but not all methods are best for all uses.
Rubber molding is beneficial because it offers a variety of services to the user. For injection molding, the costs of custom rubber molding is lower than some other forms of rubber manufacturing. In large volume runs, injection rubber molding is the ideal choice.
When using custom rubber molding, the run time of the process is reduced. This will save both time and money for large volume rubber runs. Machines using the latest molding technology have a variety of automation capabilities that reduces the cost of custom molding even lower. Using a material like liquid silicone rubber creates precision, tight tolerance parts. It is possible to create products with a variety of finishes and textures when using rubber molding.
Some of the industries that can benefit from custom molding include:
Medical: Custom devices, blood analysis machines, surgical instruments.
Electronics: Electrical connector inserts, EMI shielding, high performance seals and gaskets.
Aerospace: Cable boots, vibration isolators, power supply gaskets, keypads
Industrial: oil and gas components, fluid pumps, customized buttons and vibration absorbers.
There is no end to the types of products you can manufacture for an affordable price using the techniques of custom molded rubber manufacturing.
Rubber molding is one of many processes by which raw rubber materials are shaped into useful products. The kinds of products that rubber molding processes can create distinguish molding from extrusion, cell casting and all other rubber shaping processes. Because molded products are processed in an enclosed mold cavity as opposed to through a die, molded rubber can be processed into much more complex and irregular shapes.
Rubber molding is the process by which raw rubber is melted and formed in a mold. It is the method of choice in the creation of many different kinds of complex rubber products. For example, rubber seals and rubber diaphragms, which prevent seepage of liquids or gasses, must be precisely designed in order to fit the equipment in which they are installed. The same is true for rubber grommets and rubber washers, both of which must be precisely designed, because they are used to protect equipment. Extrusion can produce seals, diaphragms, grommets and washers, but an extruded seal or grommet's construction is limited to detail in two axes. This means that an extruder can produce three-dimensional shapes, but it only has design control over the X and Y axes (the rubber product grows in the Z axis as rubber passes through the extrusion die). For this reason, extrusion is more appropriate for the production of simple rubber sheets, rubber baseboards and other long or thin rubber products. Because rubber molding processes use enclosed molding cavities instead of open dies, molding allows for design control over all three axes. Natural rubber as well as synthetic rubbers like neoprene, silicone rubber, liquid silicone rubber, EPDM and foam rubber can all be molded.
Image Provided by Jet Rubber Company
Image Provided by Timco Rubber Products, Inc.
Image Provided by RD rubber Technology Corporation
Image Provided by Da/Pro Rubber, Inc.
Rubber Molding Terms
- A rubber compound's
capability to withstand mechanically caused deterioration.
- A test made to replicate in a short period of time the breakdown resulting from normal working conditions.
- A substance that increases the speed of vulcanization when used in small quantities in conjunction with vulcanizing agents.
- A compound used to increase the effectiveness of an accelerator, small amounts at a time.
- Tendency of rubber to cling or bond to any surface it contacts.
- The continuance of vulcanization, even after the energy source has been taken away.
- Depressions and marks on the surface of rubber, caused by air trapped during the molding process.
- Uses steam under pressure to vulcanize rubber products.
- A defect in the molding process, where the rubber near the parting line sinks below the surface and the parting line ends up ragged and torn.
- The result of a mixing operation.
- Rubber compound that fills a mold.
- A discoloration of rubber, caused by a liquid or solid migrating towards the surface.
- The necessary force to start the sliding between a rubber seal and its mating surface.
- The development of a powdery residue on a rubber surface as a result of surface breakdown.
- Small cracks on the surface of rubber, usually from environmental damage.
- The permanent deformation of rubber after removing the compression.
- Rubber that is able to conduct electricity.
- A chemical bond between polymer chains.
- The date of completion of the molding process for a rubber product.
- Any of a variety of processes for waste edge removal from molded rubber parts.
- The application of force used to evenly disperse various compounds through rubber.
- An instrument that measures the hardness of rubber.
- Applying powder to rubber to prevent adhesion to something else.
- A seal necessary for the prevention of leaks beyond parts that are in relative motion.
- A characteristic of rubber, describing its tendency to return to its initial shape after warping.
- Extension of rubber when exposed to stress.
- A machine that forces rubber through a hole that shapes it into the finished product.
- The wearing out of elastomers after repeated deformations.
- The flexing capability of a material with no permanent deformation or breakage.
- Capability of uncured rubber to move in the mold and runner system in the molding procedure.
- Rubber processed on a rubber mill that has a much greater viscosity than liquid silicone rubber.
- The process of mechanical energy changing to heat in rubber under strain.
- A material that rubber is chemically or physically bonded to during the molding process.
- Slow recovery rate of rubber after stress.
- The softening of raw rubber by mechanical and atmospheric forces.
- A chemical compound that is able to endure polymerization.
- A defect that occurs when the rubber does not completely fill out the mold.
- A line on the surface of rubber resulting from where the two halves of the mold met.
- A material that is used to quicken the softening of rubber compounds under heat or mechanical action.
- An insoluble compound that gives rubber its color.
- The degree to which rubber will retain deformation.
- Chemical reaction in which one or more simple materials are transformed into complex materials that have different properties from the originals.
- A substance that is added to rubber to increase its resistance to the harms of the vulcanization process.
- The result when rubber vulcanizes too quickly.
- Extra material that leaks from the mold as it closes.
- The term for the uniting of two parts of vulcanized rubber to make a whole.
- A thermo-setting reaction that involves the use of pressure and heat, and results in highly increased elasticity and strength of materials like rubber.