metering screw

[′mēd·ə·riŋ ‚skrü]

(mechanical engineering)

An extrusion-type screw feeder or conveyor section used to feed pulverized or doughy material at a constant rate.

References in periodicals archive ?

Work was done in the 1970s with developments such as the zero metering screw in an effort to improve on the standard model.

Part 3: working with color concentrates

The extruder had an L/D = 22 and was equipped with a conventional feeding and metering screw with a channel depth at the metering end of 2 mm.

Temperature gradients in the channels of a single-screw extruder

The vibrator conditions and tends to force feed the bulk material into flights of the metering screw where a close trough radius makes it self-cleaning.

Metalfab, Inc.: dry solids processing equipment: DB1SU and DB1SV sanitary feeders. (2003 Corporate Profiles)

The remainder of this article will cover the precision metering screw insertion method.

Superabsorbent polymer insertion technology: a simple solution

A 4.5-in., square-pitch metering screw with a channel depth of 0.3 in.

New barrel heater/cooler saves 'juice" to run an extruder

The plant already has three lime presses and Robsons are installing a further two, complete with structural works and metering screw conveyors to transfer the dewatered lime cake on to the main conveying system.

Handling Improvements at British Sugar

A single screw extruder was used to study the effect of the metering screw section geometry i.e., the shearing on the pulverization.

Some Aspects of a Plastics Pulverization Technology by Extrusion

4 as melt temperature versus output rates--demonstrate a temperature advantage for the double metering screw. This screw was used to determine the influence of extruder size on melt temperature.

The influence of screw wear on blowmolding processablity

Two screws were employed: (a) a Davis-Standard metering screw without a Maddock mixing head and (b) a Davis-Standard barrier screw with a Maddock mixing head.

Plasticating single-screw extrusion of amorphous polymers: development of a mathematical model and comparison with experiment

For the same blend, using a metering screw, 1.0 mm die exit gap, and 270 [degrees] C temperature results in lamellar morphology.

The development of laminar morphology during extrusion of polymer blends

It is then fed by a metering screw into the two-stage Munchy recycling extruder.

First agglomerate, then reclaim

An objective of this paper is to report the findings on the effect of a single stage metering screw and the melt temperature and pressure variations on the thermal and rheological properties of nylon 66 and acetal materials.

A study of the effect of the extrusion variables and screw design on the thermal and rheological characteristics of acetal and nylon 66