Press Section TRIZ Cases

See how inverting water application timing—applying water to the non-contact surface while the

Adaptive roller-speed control uses material state and position feedback to keep sheet transport stable despite motor disturbance.

A press felt with dense MD threads and less nonwoven material improves nip dewatering, raising tissue dry content for higher-speed production.

Optimized MD thread diameter and density strengthen the seam felt, improving dewatering and extending forming felt life in tissue machines.

A polycarbonate-diol polyurethane layer suppresses local strength variation in shoe press belts, improving wear and fatigue durability.

Trapezoidal rectifying plates in the sheet feed pipe suppress swirling airflow, improving fiber distribution and sheet quality consistency.

A thermoplastic elastomer copolymer layer with textile reinforcement improves shoe press cover chemical, abrasion, crack, and swelling resistance.

An idling gear and one-way clutch fold the web tip to increase thickness, preventing heating-roller adhesion, buckling, and paper jams.

A two-stage press uses pre-solidification and an extended high-peak-pressure nip to raise dry content while limiting energy use and web crushing.

A tuned line-load ratio in an extended press nip improves fibrous web dewatering while limiting web crushing, energy use, and CO2 footprint.

Variable suction-hole density across downstream ducts keeps the web stable on the belt while easing release into sheet forming.

A PPDI polyurethane press jacket uses MCDEA and MBOEA crosslinking to avoid mixer clogging and casting defects while preserving wear resistance.

A movable steam box rotates away from the paper path for self-cleaning and inspection, preventing debris contamination during cleaning cycles.

Solid lubricant particles on the belt inner surface cut shoe press friction while improving wet fiber web dewatering in paper and tissue machines.

A motor rotates a detachable container to discharge powdered and granular material, simplifying dry-process sheet production with fibers.

An offset pattern of through and blind holes enlarges suction-roll open area while reducing plugging and preserving land distance.

A motor rotates a detachable container to discharge powdered and granular material for fiber mixing, simplifying sheet-manufacturing supply.

A branched-alkylene polycarbonate diol in the polyurethane layer limits strength variation and supports durable shoe press belts.

A transfer belt supports high-speed web movement after staged shoe pressing, balancing smoothing, dewatering, and web strength.

This case uses bio-based polyols and selected crosslinkers in polyurethane to reduce petroleum use while preserving casing durability.

A roll covering uses perfluoropolyether additives to lower surface energy and prevent dirt adhesion on press section rolls.

Polycaprolactone-polycarbonate polyol prepolymer enables thick bubble-free polymer layers in a single coating pass.

Dynamic shoe press positioning resolves drying energy versus machine size trade-offs by enabling flexible tissue grade production.

Ground polyurethane coatings with micro-textures resolve aquaplaning risks by enabling efficient water drainage while maintaining reliable paper web contact.

A thermal spray coating on roll bands protects fibrous sheet processing machinery from wear and marking visibility.

Electronic sensors on a sensing roll detect nip pressure variations during continuous operation, replacing mechanical methods that require stopping production.

Embedding flat reinforcing threads in a polymer layer increases service life by resisting local overloads from foreign objects.

Segmented eccentric ferrules simplify manufacturing and enhance safety by eliminating loose rotating masses during turning.

Heated rollers compress humidified fiber webs to form strong sheets, eliminating resin usage while maintaining mechanical strength.

Multiple inlet segments distribute lubricant uniformly along the sealing strip, reducing wear and minimizing usage.

Polyurethane endless belt conveys fibrous web to textured fabric via suction roll, enabling reliable transfer at high speed differences without web damage.

Internal grooves on the transfer belt lower peak pressure and extend service life in fibrous web production.

A sheet manufacturing apparatus uses moisture and pressure to form hydrogen bonds between fibers, eliminating the need for resin binders.

A roll cover employs a two-stage curing process with reactive diisocyanates to enhance wear resistance while minimizing residual stresses.

Calcium bicarbonate reacts with fiber walls during refining to prevent rewetting and boost press dewatering performance without new equipment.

Continuous monitoring of suction roll contamination via fluid flow measurement eliminates unnecessary cleaning cycles and reduces maintenance costs.

A shoe press belt embeds a reinforcing fiber substrate in a heat-cured polyure laminate to enhance mechanical durability.

Curing a specific isocyanate compound in the felt-side resin layer improves crack resistance and land edge deficiency under high pressure.

A mechanical stop halts the closing movement of an extended nip press roll assembly to constrain maximum pressure.

Embedding a reinforcing fiber substrate in polyurethane layers cured with a mixed agent improves crack resistance and fatigue performance.

Axially movable roll head supported on a ferrule with radial indexing means resolves slow assembly and jamming issues in eccentric shoe press rolls.

Optimizing hard segment arrangement in a polyurethane press jacket via aliphatic amines resolves flexibility versus stability trade-offs.

An asymmetric pressing roller arrangement positions the upper roller downstream to leverage gravity and prevent paper stagnation at the nip portion.

Polyether polycarbonate diol strengthens polyurethane shoe press belts by enhancing material homogeneity.