|
Information Page Links:
Featured Dip Coating Manufacturers
About Dip Coating
Dip Molded Plastic Terms
Dip Coating Associations
Dip Molded Plastic Resources
Trade Shows
Featured Dip Molded Plastic Articles
More Articles
|
|
Dip Molded Plastic Terms
– A test that determines the ease
of removing air bubbles from plastisol.
– Used mostly with
rotary dip molding machines. The advantage of this system is that it
raises the amount of operator positions for reloading and unloading without
taking the racks offline, and also permits extra positions for cooling
and priming metal parts for coating preparation or for automatically
lubricating mandrels.
– An irregularity on the surface of fused plastisol, caused
by the contamination of water, air or solvents.
– A high temperature
air mover that raises turbulence and heat transfer to the mandrel or
tool in the preheat oven, also used in
the cure oven to accelerate curing and lower heat stratification.
– A measure of the viscosity of plastisol.
– A device in the dip tank that completely stops
the flow of plastisol over the weir during the dip cycle. Its use requires
synchronization with the dip tank agitation and recirculation pump cycle.
– Removal of trapped air from plastisol by using a vacuum
during mixing or later in the process.
– The uppermost edge of the dipped plastic coating.
– A material that upon being stretched to twice its length
at room temperature will immediately snap back into place.
– A measure of how far fused plastisol can be stretched
without breaking.
– Added materials used to reduce costs or modify the finished
product.
– When plastisol becomes immobile after its liquid has
been absorbed by the resin.
– When plastisol travels out of fused or partially-fused
vinyl film.
– Forms the internal
shape of a dip molded part, made of steel, aluminum or other alloys. Multiple
mandrels are usually mounted to a bar that is placed into a master rack
or mounted directly on the arm of a machine.
– A frame of aluminum or steel with pins or indentations
symmetrically positioned for retaining adapter bars. Typically, the designs
of master racks are for specific dip molding machines and can be used
with many similar bars of tooling.
– A plastisol into
which solvent has been added.
– Used for multiple dips or several colors
or grades in a constant process. The two-axis design removes preheated
racks of parts or tools from the machine by using the vertical axis,
and then moves the parts laterally to any of up to four dip tanks.
– Overhead dip stations use this J-shaped gripper to grab
the rack of tools to be dip coated. Typically these are used in pairs.
– Solids with low melting points or liquids with high
boiling points that are used to give flexibility to PVC resins.
– A liquid substance made of a blend of polyvinyl chloride
(PVC) resins and liquid plasticizers. It is a thermoplastic that can
be used to produce coatings or moldings through a heat process.
– Uses programmed positions, speeds and dwell
times to alter the dip speeds of a tool or mandrel. This is for controlling
the drip and the thickness, and may be used with traditional moving tank
designs or with overhead dip systems.
– Small particles of PVC that are mixed with
plasticizer to form plastisol.
– A measure of the viscosity of plastisol.
– Dark specks in fused plastisol of burnt resin caused by
overheating.
– An electric heater in most cure ovens that is typically
mica insulated. Airflow over these heaters moves the heat from the strip
heater to the plastic coating to be cured.
– An agent that is used in plastisol to reduce its viscosity
and enhance air release.
– An electric heater with a high surface temperature,
typically in the preheat section of the machine. Air flow as well as
infrared radiation over the elements moves the heat to the mandrel or
tool to be coated.
– The tendency of plastisol to become more viscous
while in storage.
|
|
