Material Handling Glossary

A

Abrasion Package

A wear-resistant upgrade to extend the life of parts handling abrasive materials.

Additive Auger Feeder

A screw-type feeder used to meter small amounts of pelletized additive materials.

Additive Feeder

Equipment used to add small amounts of colorants or modifiers into the base plastic material during processing.

AF Series

Volumetric auger feeders used to add small amounts of material to a process

After-Cooler

Used in high-temp drying systems to reduce air temperature to protect downstream components and enhance dryer performance.

Auger Batch Blender

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

Blending Rate Reduction

Reduction in blender throughput due to recipe change or addition of more than 3 components.

BlendTrac Software, Known Previously as A3 Software

Optional software to network up to 100 blenders for remote control and monitoring.

Bulk Bag Unloader

A system designed to unload large bags (super sacks) of raw material like resin or additives into storage or processing equipment.


C

Clam Shell Design

A hinged machine body that opens fully for cleaning and service.

Compressed Air Dryer

A system that uses compressed plant air and optional membrane filters to remove moisture from materials.

Continuous Auger Blender

A loss-in-weight blender feeding materials continuously via augers. Ideal for maintaining steady blend ratios in extrusion.

Cyclonic Pre-filter

A cyclone-style pre-filter that removes dust and fines before material reaches the main filter.


D

Dehumidified Air Dryer

A drying system that recycles low-dew point air through the hopper to dry hygroscopic resin.

Desiccant Dryer

A dryer that uses desiccant media to remove internal moisture from hygroscopic materials.

Desiccant Wheel Dryer

A dryer using a rotating desiccant-coated wheel to continuously dry process air with consistent dew point.

Dew Point

The temperature at which moisture condenses from the air. A critical metric in drying hygroscopic materials.

Digital Doser

A precision volumetric feeder that uses a disc to meter pellets, powders, and microbatches. Allows fast material changeovers.

Disc Feeder

Precision feeder using rotating discs, ideal for micro-pellets and finer material.

Distributed I/O Control

A scalable control setup using remote I/O blocks. Reduces installation time and cost for large systems.

Drying Hopper

An insulated vessel where heated air flows through plastic resin using the mass flow design to dry it before processing.


F

Face-Mounted Bearings

Bearings mounted externally for easier maintenance and alignment.

FC Style Filter

A specific type of filter (e.g., FC-15, FC-30) used in material conveying systems to trap dust and fines.

Filter Chamber

The housing that holds filters in conveying systems to protect blowers and maintain air quality.


G

Gain in Weight

A blending method where materials are weighed as they are added into a single hopper. Typically referred to as gravimetric.

Gaylord Tilter

A mechanical table that tilts Gaylord boxes for easier emptying of material.

Gravimetric Auger Batch Blender

A batch-style blender that uses augers and gravimetric weighing for metering materials. Effective for custom hard to flow materials and regrind.

Gravimetric Blender

A machine that measures materials by weight before blending. It ensures precise component proportions.


H

Hot Air Dryer

A dryer for non-hygroscopic materials that uses heated ambient air to remove surface moisture.


L

Local I/O Control

A control type where wiring runs from a central panel to each system device. Lower hardware cost, higher install cost.

Loss in Weight

A continuous blending method where each material is weighed as it is dispensed. Offers high throughput and consistent results.


M

Metering Slide Gates

Valves that control the flow of materials from hoppers into the weigh hopper.

Micro850 PLC

A modern Allen Bradley controller used to replace older MicroLogix systems.

Mixer Slide Gate

A valve that releases the weighed batch into the mixing chamber.

Mixing Chamber

The area where all ingredients are combined into a homogenous mixture.

Mobile Storage Hopper

A movable bin used for storing and transferring material between locations in a facility.


P

Piston-Assist

Hydraulic or pneumatic assist to open machine covers.

PLC (Programmable Logic Controller)

Industrial digital computer used to control machinery. Allen Bradley and Siemens are common brands.

Powder Hopper Loader

A loader designed specifically for handling and conveying powder materials.

Pre-Cooler

A component that cools incoming hot air to protect dryers operating below 150°F set point.

Proportioning Valve

A valve that controls the blend of two material sources during conveying (e.g., virgin and regrind).


Q

Quick-Set Mode

A control mode that allows entering blend ratios in percentages or part values.


R

RAM Feeder (Regrind Auger Metering)

Auger system designed for difficult-to-feed materials, often with a screw feeders and an agitated hopper.

Recipe Storage

Feature that stores predefined blend ratios/settings (e.g., up to 100 recipes on the BD Blender Series).

Regeneration Cycle

The process of removing moisture from desiccant to restore its drying ability.

Remote Monitoring

System capability to observe and control equipment from another location, often via Ethernet.

Residence Time

The time resin remains in the drying hopper, ensuring complete moisture removal.

Rotary Airlock

A valve that controls material flow while maintaining air pressure.


S

Self-Contained Loader

A conveying unit that integrates the vacuum motor and receiver into one assembly. Ideal for loading small process throughput applications.

Sequencing Valve

Controls flow of air/vacuum in a manifold.

Sight-Glass Loader

A self-contained loader with a clear viewing window to monitor material flow.

Silo

A large outdoor or indoor container used for high-volume, long-term bulk storage of resin or regrind.

Single Auger Feeder

A volumetric feeder using one auger to meter pelletized or free-flowing regrind at a consistent rate.

Slide Gate Batch Blender

A gravimetric blender using sliding gates to weigh and dispense materials sequentially. Best for free-flowing pellets and regrind.

Supply Hoppers

Containers that hold raw materials (virgin, regrind, additives) before they are dosed into the blender.

Surge Bin

A storage vessel used to hold material for use in production.


T

Take Off Box

A conveying component that connects vacuum lines to bins or silos. Available in single or dual tube configurations.

Tool-Free Access

Design that allows maintenance without special tools.

Touchscreen HMI

Interface allowing operators to control and monitor blending processes.


V

VacTrac-Plus

A flexible central conveying control platform with local I/O and touchscreen display for managing pumps and stations.

Vacuum Pump

A compact, self-contained pump system for conveying plastic materials via vacuum.

Vacuum Receiver

A component in vacuum conveying systems that holds conveyed material until it's released to a hopper or bin.

Volumetric Feeder

A machine that feeds material based on volume, usually less precise than gravimetric methods.


W

Weigh Hopper

The scale-based component in gravimetric systems that weighs each material before mixing.


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