Paper-Making Machines TRIZ Cases

A stepped humidification duct retains and spirals mist-laden air to evenly moisten the web, improving sheet strength and uniformity.

A bent cover member blocks filtration products from reaching the sieve edge gap, preventing clogging and keeping high-speed separation stable.

An offset exhaust port redirects mist and airflow to humidify the web while keeping fibers out of the water tank to prevent mold and germs.

Characteristic curves let web profiling actuators adapt to wear and changing process conditions while maintaining precise moisture and basis weight control.

Time-series monitoring across wet and dry sections traces web-break causes and enables control changes to prevent shutdowns.

A shared wire and dual furnish setup lets one line switch between foam-formed and wet-laid webs, cutting new line cost and idle capacity.

A thermoplastic shrink tube gives a carbon fiber screen support rod a smooth contact surface, preventing screen damage during paper machine installation.

CD monofilament support yarns fill seam loop spaces to improve seam strength and keep press felt air permeability closer to the non-seam region.

A comb-and-paddle brush cleaner removes residual fibers from the transport belt without damaging the rotary brush, preserving sheet quality.

A soft-covered drive nip with pressure-controlled cavities boosts fabric friction, cutting web-forming tension and machine footprint.

Time-series data from wet and dry paper-machine sections is correlated to detect precursor anomalies and reduce web-break downtime.

Spraying water onto ply surfaces before couching improves inter-ply bond strength while avoiding starch cost in multi-ply paperboard production.

Welded bonds at thread intersections help a woven press felt resist nip-load compaction while preserving permeability.

See how a two-ply press felt uses smaller, denser CD yarns over larger, sparser yarns to balance pressure distribution, marking, and dewatering.

Limited chemical testing in paper production is addressed with AI/ML dosing control that learns process relationships and adjusts additives in real time.

A hybrid former combines fiber orientation and suction dewatering to strengthen multilayer board bonding while retaining bulk.

Movable baffle plates constrain fiber-laden air during forming, producing straight web edges with adjustable width and less trimming waste.

Adjustable lateral walls set air-laid web width directly, reducing trimming waste and process interruptions during flexible production.

An associating layer penetrates and wraps support-layer yarns to strengthen lamination, preserve air permeability, and support faster fibrous-web drying.

This case uses selective welding in a woven press felt to limit thread displacement, preserving permeability and liquid absorption.

A virtual material flow digital twin tracks material attributes to measure energy use and CO2 emissions across paper production.

Analyzing drive data from a speed controller detects web tears instantly, eliminating optical sensor maintenance delays and improving detection accuracy.

A papermaking felt uses spaced joint portions to maintain structural integrity during operation.

Grooved rails and guide bars align the screen in a hinged mould-and-deckle frame, reducing manual effort during hand paper-making.

Front-rear unit layout reduces horizontal length while isolating noise from the defibrating unit to improve maintenance access.

V-shaped cutting forms symmetric leader portions that eliminate flapping and material breakage during roll turn-up operations.

A nonwoven press felt combines polyurethane fibers with other polymers to improve processability and operational readiness.

Segmented mold halves connected via a porous plug enable drainage and easy replacement, reducing maintenance costs for fiber-containing material processing.

A generalized response model uses critical points and continuous functions to represent sheet property profiles in forming machines.

Cellulose ester staple fibers improve water drainage in wet laid paper production.

A twin-wire forming section uses a sleeve roll to dewater fiber webs between wires.

Hydraulic cyclones remove vessel elements from eucalyptus pulp, resolving the trade-off between tissue softness and intrinsic sheet strength.

A sheet manufacturing apparatus arranges processing units in a U-shaped path to reduce overall length and width.

Segmented vacuum chambers with inclined nozzles reduce transfer distance and slipping, resolving stability versus cost trade-offs.

Automated sensor control adjusts ragger rope speed based on detected surface contours, preventing jamming from fluctuating contaminant loads.

A single sensor system alternates between measuring web tension and caliper across a moving paper roll.

A closed-loop system identifies cross-directional alignment deviations using actuator response monitoring during normal operation.

Segmenting the base fabric into three layers allows pin insertion through bottom and middle sections, eliminating loose ends that reduce seam life.

Perpendicular airflow from an airfoil stabilizes tissue webs during high-speed transport, reducing flutter and fiber breakage between drying and winding zones.

A control system estimates wet end paper properties to maintain dry end targets without scanner data.

Segmented frames and shutters isolate weighing sensors from airflow interference, improving measurement accuracy in sheet manufacturing.

Mushroom-shaped cellulose elements replace plastics to improve environmental compatibility while maintaining structural integrity.

A fiber web control system adjusts production parameters to maintain target caliper values across parent rolls.

Segmented vacuum chambers build cumulative holding force, preventing strip slipping and instability at high conveying speeds.

Primary and secondary dispensing modules eliminate loop box constraints to prevent jams and maintain production continuity during high speed turn up.

Passive stabilizing element prevents web instability and tears without vacuum energy or dust accumulation.