• THE TRUMP CNC MILL USED TO MAKE ALL OF OUR PRODUCT MOLDS

    A TRUMP CNC milling machine is a machine tool used to machine our product molds. Milling machines can perform a vast number of operations, from simple (e.g., slot and keyway cutting, planing, drilling) to complex (e.g., contouring, die sinking). Cutting fluid is often pumped to the cutting site to cool and lubricate the cut and to wash away the resulting swarf. Most CNC milling machines (also called machining centers) are computer controlled vertical mills with the ability to move the spindle vertically along the Z-axis. Mold or die are the common terms used to describe the tooling used to produce plastic parts in molding.

    Since molds have been expensive to manufacture, they were usually only used in mass production where thousands of parts were being produced. Typical molds are constructed from hardened steel, pre-hardened steel, aluminum, and/or beryllium-copper alloy. Our steel molds cost more to construct, but their longer lifespan will offset the higher initial cost over a higher number of parts made before wearing out.
  • REED PLASTIC EJECTION MOLDING MACHINES

    Injection molding machines consist of a material hopper, an injection ram or screw-type plunger, and a heating unit. They are also known as presses, they hold the molds in which the components are shaped.
  • VIRGIN HIGH DENSITY POLYETHYLENE (HDPE) USED FOR CONSISTENT COLOR AND STRUCTURAL INTEGRITY

    We are a green company and support the recycling of plastics. When we have recycled plastic they are regrinded and put back in to our resin and reused for certain products such as our stackable rebar/panel chair.

    High Density Polyethylene HDPE is defined by a density of greater or equal to 0.941 g/cm3. HDPE has a low degree of branching and thus stronger intermolecular forces and tensile strength. HDPE can be produced by chromium/silica catalysts, Ziegler-Natta catalysts or metallocene catalysts. The lack of branching is ensured by an appropriate choice of catalyst (for example, chromium catalysts or Ziegler-Natta catalysts) and reaction conditions. HDPE is used in for all of our mesh chairs, rebar chairs and panel guards. Low Density Polyethylene LDPE is defined by a density range of 0.910–0.940 g/cm3. LDPE has a high degree of short and long chain branching, which means that the chains do not pack into the crystal structure as well. It has, therefore, less strong intermolecular forces as the instantaneous-dipole induced-dipole attraction is less this results in a lower tensile strength and increased ductility. LDPE is used for our split sheathing (Debonding tube).



  • LOADING THE HOPPER OF THE REED PLASTIC INJECTION MACHINE

    The sequence of events during the injection mould of a plastic part is called the injection molding cycle. With injection molding, granular plastic is fed by gravity from a hopper into a heated barrel. As the granules are slowly moved forward by a screw-type plunger, the plastic is forced into a heated chamber, where it is melted. When the mould closes the polymer is injected of into the mold cavity.

    The sequence of events during the injection mould of a plastic part is called the injection molding cycle. With injection molding, granular plastic is fed by gravity from a hopper into a heated barrel. As the granules are slowly moved forward by a screw-type plunger, the plastic is forced into a heated chamber, where it is melted. When the mould closes the polymer is injected of into the mold cavity. Once the cavity is filled, a holding pressure is maintained to compensate for material shrinkage. In the next step, the screw turns, feeding the next shot to the front screw. This causes the screw to retract as the next shot is prepared. Once the part is sufficiently cool, the mould opens and the part is ejected.
  • REBAR CHAIRS IN MOLD

    When the mould closes the polymer is injected of into the mold cavity. Once the cavity is filled, a holding pressure is maintained to compensate for material shrinkage. In the next step, the screw turns, feeding the next shot to the front screw. This causes the screw to retract as the next shot is prepared. Once the part is sufficiently cool, the mould opens and the part is ejected.
  • REBAR CHAIRS EXITING THE REED INJECTION MACHINE

    Once the part is sufficiently cool, the mold opens and the part is ejected. The precast concrete rebar support chairs are ejected on to a conveyer belt. The Chairs are sorted from material that needs to be regrinded and prepared for packaging.
  • PRECAST FORM READY FOR CONCRETE POUR

    Precast concrete form, photo courtesy of Prestress Concrete in Newton Kansas. Craig’s Construction Specialties standard mesh chairs are used to hold the wire mesh at the designated height during the concrete the curing process.
  • COMPLETED PRECAST CONCRETE STRUCTURE

    Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and lifted into place. In contrast, standard concrete is poured into site-specific forms and cured on site. Precast concrete provides total solutions for entire buildings, including floors, walls, stairs and elevator shafts. Offering outstanding speed of construction and incredible durability, precast constructed buildings are engineered to last for generations to come.