Material Handling Glossary
A
A screw-type feeder used to meter small amounts of pelletized additive materials.
Equipment used to add small amounts of colorants or modifiers into the base plastic material during processing.
Used in high-temp drying systems to reduce air temperature to protect downstream components and enhance dryer performance.
A gravimetric blender that meters materials using rotating augers instead of slide gates. Designed for flexibility and handling hard to flow materials and regrind.
B
Reduction in blender throughput due to recipe change or addition of more than 3 components.
Optional software to network up to 100 blenders for remote control and monitoring.
A system designed to unload large bags (super sacks) of raw material like resin or additives into storage or processing equipment.
C
A system that uses compressed plant air and optional membrane filters to remove moisture from materials.
A loss-in-weight blender feeding materials continuously via augers. Ideal for maintaining steady blend ratios in extrusion.
A cyclone-style pre-filter that removes dust and fines before material reaches the main filter.
D
A drying system that recycles low-dew point air through the hopper to dry hygroscopic resin.
A dryer that uses desiccant media to remove internal moisture from hygroscopic materials.
A dryer using a rotating desiccant-coated wheel to continuously dry process air with consistent dew point.
The temperature at which moisture condenses from the air. A critical metric in drying hygroscopic materials.
A precision volumetric feeder that uses a disc to meter pellets, powders, and microbatches. Allows fast material changeovers.
A scalable control setup using remote I/O blocks. Reduces installation time and cost for large systems.
An insulated vessel where heated air flows through plastic resin using the mass flow design to dry it before processing.
F
A specific type of filter (e.g., FC-15, FC-30) used in material conveying systems to trap dust and fines.
The housing that holds filters in conveying systems to protect blowers and maintain air quality.
G
A blending method where materials are weighed as they are added into a single hopper. Typically referred to as gravimetric.
A batch-style blender that uses augers and gravimetric weighing for metering materials. Effective for custom hard to flow materials and regrind.
A machine that measures materials by weight before blending. It ensures precise component proportions.
H
A dryer for non-hygroscopic materials that uses heated ambient air to remove surface moisture.
L
A control type where wiring runs from a central panel to each system device. Lower hardware cost, higher install cost.
A continuous blending method where each material is weighed as it is dispensed. Offers high throughput and consistent results.
M
A movable bin used for storing and transferring material between locations in a facility.
P
Industrial digital computer used to control machinery. Allen Bradley and Siemens are common brands.
A component that cools incoming hot air to protect dryers operating below 150°F set point.
A valve that controls the blend of two material sources during conveying (e.g., virgin and regrind).
R
Auger system designed for difficult-to-feed materials, often with a screw feeders and an agitated hopper.
Feature that stores predefined blend ratios/settings (e.g., up to 100 recipes on the BD Blender Series).
System capability to observe and control equipment from another location, often via Ethernet.
S
A conveying unit that integrates the vacuum motor and receiver into one assembly. Ideal for loading small process throughput applications.
A large outdoor or indoor container used for high-volume, long-term bulk storage of resin or regrind.
A volumetric feeder using one auger to meter pelletized or free-flowing regrind at a consistent rate.
A gravimetric blender using sliding gates to weigh and dispense materials sequentially. Best for free-flowing pellets and regrind.
Containers that hold raw materials (virgin, regrind, additives) before they are dosed into the blender.
T
A conveying component that connects vacuum lines to bins or silos. Available in single or dual tube configurations.
V
A flexible central conveying control platform with local I/O and touchscreen display for managing pumps and stations.
A component in vacuum conveying systems that holds conveyed material until it's released to a hopper or bin.
A machine that feeds material based on volume, usually less precise than gravimetric methods.