Find dip molders including dip molded plastics, custom dip molded plastics, plastic plugs and more. From dip coating, plastic caps, plastic coating to dip molded plastic products, you will find the dip molder you need. Use the time-saving Request for Quote tool to submit your inquiry to all the dip molding services and companies you select.
At U.S. Plastic Coatings, we offer a wide range of capabilities in dip molded plastics. We offer plastic coatings, plastic dip coating, plastic closures and much more. Call us today for more information on our quality products and services with delivery in one week or less.
Caplugs and Niagara combine to offer one of the largest selections of dip molded plastic product protection in the industry. Choose from hundreds of caps, plugs, grips and other protective parts. For customized solutions, our engineers will create a part for even the most unusual application.
Tomcat Industries is a manufacturer of PVC and plastic products such as plastic caps, handle grips, tubes, hose and valve protectors and covers. We proudly offer PVC dip coating and spray coating services. We carry fishing weights and wholesale diving supplies. Check our website for details!
Carlisle Plastics is a dip molded plastics manufacturer offering end caps, plastisol paint masks, thread protectors, tube closures, protective caps and decorative caps. We provide a wide selection of standard sizes and colors. Custom colors as well as nonstandard shapes and sizes are a specialty.
Founded in 2001, Auberst strives to be a leading distributor of all types of plastic, metal and corrugated containers. We also offer items such as plastic caps, plastic plugs and dispensing caps. Our large network of manufacturers can ship directly. See why our motto is “simply the best”.
Dip molders plastic is any plastic molded part made from
the dip molding process. Dip molder manufacturers use a thermal process that
involves the preheating, dipping and post-heating of metal molds. Generally,
automatic dip molders machines perform this process. High-precision is involved
in plastic dip molding because the inside of the part is an exact negative
of the mold, with the same surface texture of the mold. The outside dimensions
are also controllable. Using precisely controlled ovens, dip speeds, dip times
and withdraw speeds provides a range of wall thicknesses. Dip molded plastic
is useful in many different industries, including medical, artistic, automotive,
appliances, aviation, construction, electronics and sporting goods. This process
produces many items, such as colored plastic
caps, plugs, grips and handles.
It is also used to coat products like fryer basket handles, tool handles and
outdoor furniture.
Plastisol is the most common plastic compound that is used in plastic dip
coating and with dip molders. It is a liquid at room temperature, but once it is heated,
it becomes solid and never changes its state again. Plastisol is very good
to work with because of its viscous properties and long shelf life. Dip molder
manufacturers can make Plastisol in many different colors, surface qualities
and thicknesses. It survives in radically different environments. Other less
common dip molders that are used in the dip
molding process are latex, neoprene
and urethane.
When dip molder manufacturers use plastic, the first step is the heating of
metal molds that have the internal dimensions of the desired part. The dip
molder is then immersed or “dipped” in a tank of liquid plastisol.
The heat in the molders are attracted to the cool plastisol and gels the material
around the mold, forming the part. The mold is then removed and taken to the
curing ovens where the plastisol material is fused. Lastly, the molded part
is cooled, typically in water, and then stripped from the mold and packed for
shipment or secondary operations. The other basic method, plastic dip coating,
also called vinyl coating, is slightly different, in that it produces a hard
coating over an already made plastic product, but follows basically the same
process. In this method, an item, heated or unheated, is dipped in the plastisol,
which gels around it. The item is then heated, and when it fuses, the coating
is complete.
Dip molding is an effective alternative to other plastic processes. The expense
for dip molding is lower than other processes since most dip molders are uncomplicated
and inexpensive. The automation of the process makes it competitive with other
dip molders processes since it reduces labor costs. Dip
molding produces plastisol
end caps and covers a wide variety of detailed shapes and a multitude of colors.
Thermoplastic coatings supply decorative, functional and multipurpose covers.
Overall, dip molders and coating is an attractive and innovative industry.
Dip Molders and Dip Molder
Image Provided By Caplugs
Cast molding involves
dispensing plastisol into a mold, placing it in an oven and then heating
it so the plastisol fuses into the finished part. This process is capable
of producing multi-colored parts.
Cold dip coating
is used mostly for thin coatings of plastisol. In this process, the
object is dipped in plastisol without preheating, and then placed in
a heated chamber.
Dip coating is the process of submersing an object in a tank full of coating material.
Dip molding is a thermal process by which metal molds are dipped and coated.
Hot dip coating
is the process in which an object is heated, dipped in plastisol and
then placed in a heated chamber where fusion takes place.
Plastic caps are plastic covers formed through the process of dip molding.
Plastic plugs are plastic caps formed through the process of dip molding.
Rotational molding
is a method that involves placing a limited amount of plastisol in a
mold and then rotating it as heating takes place so the liquid is equally
distributed. This is used to create hollow products.
Saturation coating
is the method of completely immersing an object in liquid plastisol
and then letting it gel so that the object is totally covered.
Dip Molders Terms
Air Release – A test that determines the ease
of removing air bubbles from plastisol.
Automatic Rack Transfer System (ARTS) Station – 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.
Blister – An irregularity on the surface of fused plastisol, caused
by the contamination of water, air or solvents.
Blower – 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.
Brookfield Viscosity – A measure of the viscosity of plastisol.
Closeable Dam – 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.
Deaeration – Removal of trapped air from plastisol by using a vacuum
during mixing or later in the process.
Dip Line – The uppermost edge of the dipped plastic coating.
Elastomer – A material that upon being stretched to twice its length
at room temperature will immediately snap back into place.
Elongation – A measure of how far fused plastisol can be stretched
without breaking.
Fillers – Added materials used to reduce costs or modify the finished
product.
Gelatin – When plastisol becomes immobile after its liquid has
been absorbed by the resin.
Leaching – When plastisol travels out of fused or partially-fused
vinyl film.
Mandrel – 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.
Master Rack – 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.
Organosol – A plastisol into
which solvent has been added.
Overhead Dip Station – 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.
Pawl – Overhead dip stations use this J-shaped gripper to grab
the rack of tools to be dip coated. Typically these are used in pairs.
Plasticizers – Solids with low melting points or liquids with high
boiling points that are used to give flexibility to PVC resins.
Plastisol – 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.
Profile Dripping – 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.
PVC Dispersion Resin – Small particles of PVC that are mixed with
plasticizer to form plastisol.
Severs Viscosity – A measure of the viscosity of plastisol.
Specks – Dark specks in fused plastisol of burnt resin caused by
overheating.
Strip Heater – 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.
Surfactant – An agent that is used in plastisol to reduce its viscosity
and enhance air release.
Tubular Heater – 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.
Viscosity Aging – The tendency of plastisol to become more viscous
while in storage.
