In an all-electric injection molding machine, all of the clamping, injection, plasticizing and ejector movements are driven directly by servo motors;…
Read definition →Clamping force is the force that holds the mold halves closed against the pressure of the melt trying to open the mold during injection; it is…
Read definition →Plasticizing capacity is the amount of material the screw can melt and homogenize in one hour; it is given in kg/h and is usually measured with…
Read definition →Projected area is the area that the part and runner system cover when viewed perpendicular to the mold parting plane. It is not the real surface area…
Read definition →A servo-hydraulic injection molding machine drives the hydraulic pump with a servo motor instead of a fixed-speed asynchronous motor. The pump turns…
Read definition →The shot weight should stay between 20% and 80% of the maximum melt volume the screw can accumulate in front of it. Below 20% the material waits a…
Read definition →A two-platen injection molding machine removes the rear platen and toggle linkage of the classic three-platen toggle design and generates the…
Read definition →Angel hair is material formed when granulate in a vacuum conveying line rubs at high speed against the pipe wall, and especially the elbows, melts…
Read definition →A central material conveying system is a closed-loop conveying system that automatically feeds all the injection molding machines in a plant from…
Read definition →The dew point is the temperature at which the moisture carried by air begins to condense, and it is a measure of how dry the air is: the lower the…
Read definition →A dry air dryer is a closed-loop dryer that first passes the air through a molecular sieve (desiccant) bed to remove its moisture, then heats it and…
Read definition →False air is air entering a vacuum conveying line at points other than the material inlet — loose couplings, a cracked hose, a poorly seated…
Read definition →A hopper loader is a device that draws granulate by vacuum from a bag, octabin or dryer and automatically fills the hopper of the injection molding…
Read definition →A hygroscopic plastic is a material that draws the moisture in the air into the granule; the moisture is held not on the surface but between the…
Read definition →Regrind is material obtained by grinding runners, flash and defective parts in a granulator and reused by mixing it into new raw material at a…
Read definition →Gravimetric dosing is a dosing method that blends each component by weighing it according to its weight, not its volume. A load cell measures each…
Read definition →Masterbatch is a pigment or additive mixed at high concentration into a carrier polymer and formed into granulate. It is usually dosed into the base…
Read definition →Volumetric dosing is a method that measures the additive not by its weight but by its volume — by the speed of the dosing screw, the rotation of a…
Read definition →A magnetic separator is equipment that uses a permanent magnet to capture iron-bearing (ferromagnetic) metal particles in the material flow and…
Read definition →Mold shrinkage is the percentage by which the part's dimension, measured 16 hours after it leaves the mold, is smaller than the mold cavity dimension…
Read definition →A mold temperature control unit is a device that keeps the mold temperature constant at the set value by circulating water or oil through the mold's…
Read definition →Mold tilting is the operation of safely turning a mold from the vertical to the horizontal position, or the reverse, for maintenance and cleaning; in…
Read definition →Quick mold clamping is the general name for systems that secure the mold to the machine platens with a magnetic platen or hydraulic clamps instead of…
Read definition →Cascade injection is a filling technique that opens and closes the valve-gate nozzles of a hot runner in sequence, based on time or screw position.…
Read definition →Cavity pressure is the pressure the melt actually reaches inside the mold cavity; it is not the same as the injection pressure on the machine screen.…
Read definition →A hot runner is a mold system that keeps the runner channels carrying the melt from the machine nozzle to the cavity continuously at melt temperature…
Read definition →Back pressure is the resistance applied against the screw retracting during plasticizing; it compresses and homogenizes the melt, improves color…
Read definition →Cycle time is the total time from one mold closing to the next mold closing for a part: the sum of the closing, injection, holding, cooling,…
Read definition →MuCell is a foam injection molding process in which nitrogen or carbon dioxide is dosed into the melt as a supercritical fluid during plasticizing…
Read definition →EUROMAP is the family of technical standards published by the European association of plastics and rubber machinery manufacturers; it defines the…
Read definition →OPC UA is an open communication protocol that allows industrial devices to communicate independently of the manufacturer, securely and with a…
Read definition →The glossary explains the concept; an on-site review determines which equipment fits your line. Calculators, the troubleshooting guide and technical support under one roof.