Compression Molding Press--A hydraulic press designed exclusively for compression molding, the most widely used production method for molded rubber products. Compression molding is ideal for low to medium volumes and can be used for a largest variety of part sizes and materials, including high cost materials and applications that demand extreme hardness. It is a very efficient, low waste method that offers the simplest process, lowest investment and greatest flexibility. Compression molding generally results in lower amounts of scrap. It does not consume excess rubber in the runner of an injection mold, or in the pot of a transfer mold.
In the molding process, generally preheated material is placed
in an open, heated mold cavity. The mold is closed with a top force or plug
member, pressure is applied to force the material into contact with all mold
areas, and heat and pressure are maintained until the molding material has
cured. Contact a TMP representative to learn more about our compression molding machines.
Transfer Molding Press--A hydraulic press designed for transfer molding, an automated operation that combines the compression and injection-molding processes. Transfer molding allows the molding of intricate parts while providing highly accurate dimensional control for low to medium production volume requirements. The cycle times are generally longer than injection molding, however they can be very cost competitive.
A transfer molding press can also reduce the cure time by heating the material before it reaches the mold. The material can be and is forced into a closed mold by means of a hydraulically operated plunger, or by using the compressive force of the press in combination with a tooling with an internal transfer pot.
The transfer molding press was developed to facilitate the molding of intricate products with small deep holes or numerous metal inserts. It is ideal for insert molding because the tool is closed prior to the material being transfer, which limits the amount of shift with the insert parts. Learn more about TMP's transfer molding press.
Composite Molding Press--A hydraulic press that molds two or more materials in the same cavity, in the same shot, with a combination of transfer and compression molding.
Lamination Press--A laminating machine used to bond two or more thin sheets of material together by means of physical pressure. Lamination presses are used in the manufacture of printed circuit boards and plastic cards such as credit cards.
C-Frame Hydraulic Press--A C-Frame hydraulic press, also known as a c-style hydraulic press, or a gap frame hydraulic press has a frame configuration that resembles a “C." The C-frame hydraulic press is designed to have a minimal footprint on the shop floor. Other advantages of C-frame hydraulic press construction include an increased open work area, which increases accessibility. C-frame hydraulic presses are used to form a wide range of materials, including rubber, plastics, and composites.
H-Frame Hydraulic Press--Commonly known as a 4 column hydraulic press, an H-Frame hydraulic press has a construction style that resembles the letter H. An H-frame hydraulic press can typically field multiple press applications simultaneously. TMP manufactures a complete H-frame hydraulic press line from 3-200 tons, serving the rubber, plastics, composite, and printed circuit board markets.
Platen Press--A hydraulic press designed with platens, the flat steel or cast iron plates that apply heat and pressure to a mold. Platens have a certain footprint depending on the capacity/tonnage of the hydraulic press.
Post Press--This basic hydraulic press design utilizes four corner posts to support and guide the press platens and bolster assembly during the forming process.
Slab Side Hydraulic Press or Straight Side Hydraulic Press--Typically this style of hydraulic press uses solid side construction to guide press and platen operation in larger applications. Slab style construction keeps press components properly aligned, within specified tolerances, and minimizes deflection.
Bench or Laboratory Hydraulic Press--A smaller sized hydraulic press suitable for research and development, prototyping, or laboratory use.
Vacuum Press--A hydraulic press with vacuum enclosed platen working areas to remove air, gas vapors, and fumes during the forming process. A vacuum style hydraulic press ensures consistent material flows, as well as precise control over temperature and pressure.
Window Frame Hydraulic Press--A hydraulic press with a large open feed area, or window, designed especially for larger dies, or where access to work area is important. A window style hydraulic press offers minimal deflection and optimal crosshead parallelism.
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