SUBJECT

Flowability

Publications on powder flow, flowability testing, cohesive behavior, and the material and process factors that influence reliable handling and discharge.

PUBLICATIONS

Browse publications

Explore PTI articles, Insights, Know How, and technical publications related to this subject.

  • Fine particles between larger powder particles showing how fines in powder behavior affect surface area, contact points, and restricted air paths.
    23 May 2026

    Fines in Powder Behavior: Why Small Amounts Matter

    Fines in powder behavior matter because fine particles add surface area, contact [...]

    Insights

  • Metal powder feedstock quality assessment in an additive manufacturing lab with fine metal powder, powder bed fusion equipment, and microscopy inspection
    16 May 2026

    Metal Powder Feedstock Quality in Additive Manufacturing: From Particle Behavior to Part Performance

    Metal powder feedstock quality has a direct effect on print stability and [...]

    Feature Article

  • Sieve blinding in powder screening showing near-size wedging, fine-particle coating, agglomeration, and bed overload on a vibrating sieve.
    2 May 2026

    Sieve Blinding: Why Powder Screens Fail Before the Particle Size Spec Does and How to Solve it

    Sieve blinding does more than reduce screening capacity. It changes the [...]

    Insights

  • Acoustic emission for flow blockage prediction sensor mounted near the lower cone outlet of a powder hopper
    18 April 2026

    Acoustic Emission for Flow Blockage Prediction

    Acoustic emission for flow blockage prediction captures high-frequency stress waves generated by [...]

    Feature Article

  • Powder flowability technical illustration comparing normal hopper discharge with arching and pulsing caused by poor venting and unstable flow.
    16 April 2026

    Powder Flowability: Factors and Measurement Techniques

    Powder flowability is not one fixed property. A powder can look free-flowing [...]

    Insights

  • Powder segregation diagnosis during hopper filling showing coarse and fine fractions separating in an industrial powder transfer process
    11 April 2026

    Powder Segregation Diagnosis During Mixing, Conveying, and Filling

    Powder segregation diagnosis starts by locating where the blend loses uniformity. Some [...]

    Feature Article

  • FIBC discharge problems technical illustration showing how the liner-spout interface can cause unstable discharge, dust release, and residual heel in a bulk bag emptying station.
    11 April 2026

    Why FIBC Discharge Problems Often Start at the Liner-Spout Interface

    FIBC discharge problems are often blamed on the powder being discharged too [...]

    Insights

  • Free-flowing powder arching at a stainless steel hopper outlet in an industrial plant, showing blocked discharge and powder buildup during troubleshooting
    4 April 2026

    Diagnosing and Solving Free-Flowing Powder Arching and Blockage in Hoppers

    Free-flowing powders can form stable arches and block hoppers because standard “free-flow” [...]

    Feature Article

  • Wall friction and hopper geometry shown in two stainless steel powder hoppers comparing mass flow and funnel flow
    21 March 2026

    Wall Friction and Hopper Geometry: Why Some Bins Mass Flow and Others Funnel Flow

    Mass flow requires hopper walls that are steep and smooth enough for [...]

    Feature Article

  • Technical illustration showing how bulk powder behavior changes between weak and strong internal contact networks in a powder bed.
    21 March 2026

    Why Bulk Powder Behavior Depends on Contact Networks, Not Just Particle Size

    Bulk powder behavior is not controlled by particle size alone. In many [...]

    Insights

  • Free-flowing powder arching in hoppers shown as a stable powder bridge above a stainless steel outlet in an industrial processing system
    14 March 2026

    Why Free-Flowing Powders Still Arch in Hoppers, and How to Diagnose the Real Cause

    A powder can look easy to handle in a funnel test and [...]

    Feature Article

  • Technical illustration comparing normal powder discharge with restart failure after a short shutdown in a hopper and screw feeder
    14 March 2026

    Why Powder Flow Often Fails After a Short Shutdown in Hoppers and Feeders

    Powder flow after a short shutdown often fails because the resting powder [...]

    Insights