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About Rubber Extrusions
Rubber extrusions manufacturers use natural and synthetic
rubber materials to fabricate their products. Rubber is a common material
used in virtually every industrial application. Its resilience makes
it a particularly effective choice for applications involving shock absorption,
sealing and fluid transportation. Although different rubber processing
methods exist, rubber extrusions remain a popular choice for many manufacturers
because of the neat, uniform way extruded rubber products can be produced.
A great variety of shapes can be created by rubber extrusions manufacturers
for any industrial need, including hollow designs that greatly reduce
material cost and create flexible, lightweight products. Rubber materials
are in great demand because of their resilience and flexibility, making
rubber extrusions and molded
rubber well-liked and effective ways to
produce these rubber extrusions materials.
During the rubber extrusions process, rubber material is processed through
an extruder. Rubber extruders consist of two main components: a small
heated drum and a die. Pre-heating of the material is optional, depending
on the result desired. As the material enters the drum, it is softened
through heating and then pressurized through the rotation of a screw.
The pressure pushes the rubber through the die, located at the end of
the extruder. The rubber then emerges from the extruder in a profile
resembling the die shape. As die design possibilities remain nearly limitless,
so does the number of possible rubber extrusions profiles. After being
extruded, the material is cured using various methods that include salt
bath, autoclave, convection, hot air, microwave and mandrel.
Rubber extrusions profiles are used in a wide variety of industries,
including the aerospace, automotive, lighting, appliance, electronics,
construction and medical industries. Basically, rubber extrusions can
be used anywhere, as it is a very versatile product. The following products
represent common rubber goods. Rubber manufacturers produce a wide variety
of rubber molded parts such as rubber grommets, bellow, seals, weatherstripping,
sheeting, pads, boots, bumpers, tubes and bushings. In addition to these
common rubber goods, many manufacturers will fulfill customer requests
for custom extruded profiles so that everyone’s needs are covered.
Some common materials used by rubber extrusion manufacturers include
SBR, neoprene, silicone, EPDM, nitrile, santoprene, viton, natural rubber,
butyl, hypalon and timprene. Some important considerations when thinking
about rubber extrusions are whether the physical and mechanical properties
of the desired material are appropriate for the environment in which
it will be used. Such properties as tensile strength, hardness, aging,
flexibility, permeability and speed of recovery from deflection will
vary in different materials, and need to be weighed against the benefits
and weaknesses that will result from using such materials. Rubber’s
biggest competitor is plastic, but both continue to remain popular in
many industries.
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Types of Rubber Extrusions
- is a variation of the basic extrusion
process, where two separate extruders connect to a single die and
two or more separate
batches of rubber material are mixed by separate screws, and then fed
into the die at the same time. This allows for the convergence of rubber
materials that contain different properties like color and consistency.
- involves performing the
extrusion process without pre-heating. This is best suited to produce
profiles, hoses, cable
and sheaths.
- is rubber that has been melted and forced into a die.
- involves pre-heating the
rubber material before performing the extrusion process.
- have a special design
with many pins protruding from the cylinder wall toward the screw's
center that enhance
the mixing and dispersing of the rubber as it is kneaded between the
screws and
the cylinder. This method can be applied to many rubber compound
formulations for diverse applications.
- absorb vibration and shock.
- are placed between moving parts to absorb vibration.
- are rubber rings inserted into a hole in sheet metal to protect cords or electrical wires from the abrasion.
- is used for a variety of purposes including mats, lining, floor coverings, and stair treads.
- have screws of an original
and unique design. This type is easy to maintain and occupies very
little floor space.
- is used to insulate a building to make heating and cooling more efficient.
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