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  • Technical infographic showing powder deaeration, permeability, density recovery, air retention, flushing, surging, and feeder instability after filling.
    6 June 2026

    Powder Deaeration: Flushing, Surging, and Air Retention

    Powder instability after conveying, filling, or transfer is often treated as [...]

    Know How

  • Real-time particle characterization system linking inline powder sensors, process data, and hybrid models for powder process control.
    6 June 2026

    Real-Time Particle Characterization and Process Control

    Real-time particle characterization is moving powder processing from delayed laboratory checks toward [...]

    Feature Article

  • Industrial pneumatic conveying receiver with stainless steel pipework and hopper used for fine powder fluidization.
    30 May 2026

    Fine Powder Fluidization in Pneumatic Conveying and Discharge Control

    Fine powder fluidization can support controlled pneumatic conveying, especially in dense phase [...]

    Feature Article

  • Powder operating window diagram showing a stable powder operating zone surrounded by six process boundaries: consolidation and wall friction, aeration and permeability, humidity and caking, wetting and agglomerates, segregation after transfer, and temperature and time history.
    30 May 2026

    Powder Operating Window: Why a Good Powder Fails in the Wrong Process

    A powder operating window defines the process conditions in which a [...]

    Insights

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Flow & bulk behaviour

FlowabilitySegregationDustinessCakingElectrostatic EffectsMoisture SensitivityShearCohesionPermeabilityPacking Density

Particle & surface behaviour

AgglomerationAttritionAbrasionWearAdhesionSurface EnergyDispersionRheologyPorosityThermal PropertiesParticle Size Distribution

Processing & handling

Mixing TechnologyHoppersConveyingCompactionCoatingSilo StorageEncapsulation TechniquesSpray DryingMilling

Characterization & analysis

Bulk Solids CharacterizationParticle Size TestingAnalytical Techniques and MethodsChemical Composition AnalysisMicroscopy

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Feature Articles, Insights, and Know How are editorial formats within PTI publications. They are not separate technical destinations.

Feature Articles

Long-form technical analysis built around a defined engineering question, comparison, mechanism, process, or application.

Insights

Focused interpretation of a study, method comparison, process result, standard, or emerging technical development.

Know How

Practical technical guides that go deeper into measurement, interpretation, equipment, and powder-behavior decisions.

Feature Articles

Long-form technical analysis

Recent Feature Articles examine a defined engineering question in greater depth, connecting mechanisms, measurements, process context, and interpretation where the subject requires it.

  • Industrial spice milling and blending line with airborne powder and spice bowls, showing how hidden additives in food supply chains can enter during upstream processing.
    27 December 2025

    The Hidden Additives in Food Supply Chains Consumers Never See

    Hidden additives in food supply chains often enter as processing aids at [...]

    Feature Article

  • Winter powder quality control sampling graphite to prevent flow issues during the Christmas rush
    20 December 2025

    Graphite Under the Tree

    In the Holiday rush, winter humidity shifts and faster throughput can break [...]

    Feature Article

  • Triboelectric charging in powders at a pneumatic conveying transfer point, showing fine powder flow near grounded stainless steel piping and an electrostatic field sensor.
    13 December 2025

    Triboelectric Charging in Powders: The science, failure modes, and industrial controls

    Triboelectric charging forms when powders contact and separate, creating a shifting charge [...]

    Feature Article

  • Smart powder processing in additive manufacturing shown as a metal powder bed fusion machine with active laser and sensor data overlay.
    6 December 2025

    Additive Manufacturing Integration and the Rise of Smart Powder Processing

    Smart powder processing in additive manufacturing links engineered powders, real-time sensor data, [...]

    Feature Article

Insights

Focused technical interpretation

Recent Insights examine a study, method, process result, standard, or emerging technical development in a tighter editorial format.

  • Welding fumes in powder plants captured at the arc with local exhaust ventilation during maintenance welding.
    3 January 2026

    Welding Fumes in Powder Plants: The Hidden Contamination Risk During Maintenance and Hot Work

    Welding fumes in powder plants now sit in a tighter EU compliance [...]

    Insights

  • Powder permeability dosing instability in a hopper feeding a loss in weight feeder.
    27 December 2025

    Powder Permeability, The Hidden Cause of Dosing Instability

    Powder permeability dosing instability often starts with trapped air. Low permeability traps [...]

    Insights

  • EU plastic pellet loss regulation, spill containment and vacuum recovery at a pellet transfer point in a bulk handling area.
    20 December 2025

    EU Plastic Pellet Loss Regulation: Bulk Plant Compliance

    EU plastic pellet loss regulation (EU) 2025/2365 makes spill prevention and documented [...]

    Insights

  • Engineer in a powder processing plant reviewing a tablet that visualizes control banding for powders near a ventilated big bag discharge station.
    13 December 2025

    Control banding for powders: making incomplete data actionable

    Control banding for powders turns incomplete hazard data into a clear exposure [...]

    Insights

Know How

Practical technical guidance

Recent Know How publications focus on practical measurement, method selection, interpretation, equipment, and technically useful working guidance.

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The complete PTI publication catalogue

Browse all published PTI content, newest first. Use the subject index above when you know the technical topic, or the structured PTI hubs when you want a guided route through a problem, property, measurement, process area, or industry.

  • Square hero showing a powder segregation test with two bottles filled via funnels, one fast and one slow, each cored for top-middle-bottom sampling.
    4 October 2025

    Powder Segregation Test: The 20 Minute Bottle Method

    Most blend failures start with segregation during transfer. Run a 20 minute [...]

    Insights

  • Square hero illustrating powder creep mechanisms: granular creep in a hopper and diffusion creep in a tensile frame.
    4 October 2025

    Powder and Granular Creep: Mechanisms, Testing, and Control

    Powder creep mechanisms occur in various ways; powders creep in bins. Sintered [...]

    Feature Article

  • Laboratory ring shear tester and FT4 powder rheometer measuring powder flow test methods.
    1 October 2025

    Selecting and Comparing Powder Flow Test Methods (including PDF guides)

    No single flow test defines powder behaviour completely. Each method measures different [...]

    Know How

  • Three Petri dishes with metal, ceramic, and polymer powders, plus a spatula pouring metallic powder, illustrating powder testing circular economy.
    27 September 2025

    Powder Technologies Within Circular Systems

    The relevance of powder testing for circular economy powder usage. Circular production [...]

    Feature Article

  • Square hero image illustrating hidden charge peaks in powder flows with localized hotspots.
    27 September 2025

    Hidden Charge Peaks in Powder Flows: Measure What is missed

    Do not accept a safe net charge as proof of safety. Find [...]

    Insights

  • AI-assisted material characterization: laser diffraction setup analyzes a powder stream with a camera and PSD histogram on a lab monitor.
    20 September 2025

    Material Characterization with AI-Assisted Analytics

    AI-assisted material characterization speeds testing, strengthens models, and improves inline control. Labs [...]

    Feature Article

  • Catalytic hot spots in powders shown by a lab setup with a Karl Fischer titrator, a weigh boat of powder, and a microbalance on a clean bench.
    20 September 2025

    Catalytic Hot Spots in Powders: Small Regions, Big Consequences

    Catalytic hot spots in powders often determine stability. Detect them early with [...]

    Insights

  • Close-up macro view showing moisture droplets condensing on fine powder particles, illustrating moisture risk in powder formulations.
    13 September 2025

    Moisture as a Formulation Risk: Beyond Standard Hygroscopicity Testing

    Moisture risk in powder formulations extends beyond mass uptake. Water reshapes surfaces, [...]

    Insights

  • Deep-sea particle dynamics for powder engineering: marine snow with diatom chains sinking.
    13 September 2025

    Deep-Sea Particle Dynamics, Through a Powder Lens

    vDeep-sea particle dynamics show powder engineering mechanics in powder dynamics. Deep trenches [...]

    Feature Article

  • Cobalt exposure limits powder manufacturing worker in PPE with respirator, dusted with cobalt powder.
    6 September 2025

    Cobalt Exposure Limits in Powder Manufacturing: Five Steps to EU Compliance

    Cobalt exposure limits in powder manufacturing are tightening. Plants must act now [...]

    Insights

  • Scientist applying slurry of lithium powders to foil electrode in lab, demonstrating lithium powders energy density research.
    6 September 2025

    Atomic Fundamentals and the Density–Energy Link

    Lithium’s atomic-scale behavior drives energy density in batteries. Powders are not passive [...]

    Feature Article

  • Ancient powder technologies illustrated by a Tang dynasty alchemist grinding early gunpowder ingredients.
    30 August 2025

    Ancient Powder Technologies: Metallurgy, Pigments, and Gunpowder Before Western Reinvention

    Ancient civilizations mastered powder processing long before modern science. What we call [...]

    Feature Article

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