Paper Recycling TRIZ Cases

See how oxygen gas scouring replaces mechanical shive removal to increase non-wood fiber bright

See how time-of-flight sensing replaces infrared and capacitive sensors to enable reliable touc

A controllable stopper regulates fiber raw material flow to keep supply uniform, prevent over-feed, and shrink dry sheet equipment.

Electric charge sensing adjusts defibration blade speed to limit fiber clumping and keep dry-formed sheets uniform in thickness.

Varying through-hole density across upstream and downstream screens evens airflow and pressure, improving fiber defibration consistency.

A tapered nozzle boosts air speed to peel defibrated fiber from rotating mesh, improving collection without larger blowers or higher power.

A conical basket screen with external flexible rotor vanes improves deflaking while cutting power use, wear, and impurity buildup.

Impeller-driven vortical flow moves fiber material through defibering and deflaking stages to cut plugging and raise pulper throughput.

A hardened layer on screen cylinder slot surfaces resists abrasive wear, preserving slot width, separation efficiency, and pulp screening throughput.

A hardened layer on screen cylinder slot surfaces limits abrasive wear, holds slot width, and sustains pulp separation efficiency over time.

Weight-based control adjusts mesh rotation to keep foreign matter removal uniform despite raw material supply variation.

Cantilevered rotor vanes on a basket screen improve pulp de-flaking while cutting power use, wear, and impurity buildup.

A flow rectifying member guides airflow near the discharge port to prevent refined product buildup while preserving refining quality and throughput.

Taller dispersion teeth and an outer refining section let one plate segment control refining energy while maintaining consistent fiber dispersion.

A vertical variable-width paper holding mechanism cuts shredder footprint and removes staples before they reach the core.

Localized hardening of profiled-bar slot surfaces limits abrasive wear, preserving slot width and separation efficiency during pulp screening.

An interlocked exterior and sealing cover closes the paper storage insertion port, limiting scattering and maintaining humidity during dry recycling.

Larger inlet openings process waste paper bales while conveyor bars and a labyrinth seal limit leakage and wear at the rotating drum interface.

This case removes non-cellulosic foreign matter from used textiles, supporting paper production with less reliance on fresh fibers.

Two angled optical sensor rows collect distance data to determine paper web thickness without complex alignment.

Multi-stage bleaching converts residual peroxide into peracetic acid to increase pulp brightness while reducing chemical consumption and fiber damage.

Collapsible bin tunnel sides retract to minimize truck box intrusion, resolving the contradiction between loading depth and payload capacity.

Segmenting the process into two stages removes interfering surfactants, restoring bubble hydrophobicity and improving ink removal selectivity.

A pulping system uses two secondary pulpers in series to continuously screen and defibre reject fractions from the main pulper.

Segmenting the grinding surface into exposed and non-exposed areas reduces idle power consumption while maintaining throughput in fiber refiners.

A pulper perforated plate uses variable hole diameters to separate fibers from mixed waste paper materials efficiently.

Ammonium fatty acid salts control excessive foam during flotation deinking, resolving the trade-off between high ink removal efficiency and low fibre recovery.

Coagulant and flocculating agents aggregate low molecular weight starch in recycled pulp to improve fibre retention.

Horizontal compression of intact bound bales reduces machine footprint and labor requirements compared to traditional top-loading multi-cycle processes.

An end-mounted lifting mechanism emptins bins into a longitudinal container, resolving setup time and space constraints while protecting contents.

An angled security structure resolves the trade-off between easy disposal and secure attachment, preventing unauthorized document retrieval.

Radio beacon positioning and fill sensors enable adaptive emptying schedules, preventing unauthorized bin movement and document exposure.

Composite polymer flocculants maintain extended chains and form stable flocs despite elevated conductivity and cationic demand interference.

A sheet manufacturing apparatus adjusts conveyor speed, sieve mesh size, and classifier settings to produce diverse material characteristics.

A composite cationic polymer composition enhances floc formation and stability through electrostatic interactions between polymer chains.

A horizontal pulper system uses gravity to separate impurities from recycled material without vertical conveyors.

Acetic acid pretreatment weakens cellulose fibers in recycled paper, enabling shear forces to separate nanofibrils with virgin-like quality.

Segmented compartments separate dry paper from moist waste, preventing floor contamination while allowing moisture evaporation to inhibit mould growth.

Compression devices smooth surface irregularities on fiber webs, allowing non-contact optical sensors to measure thickness accurately despite rough surfaces.

Industrial two-layer fabric places binding yarn between upper side warps to stabilize surface design and maintain dehydration routes.

Post-consumer waste paper receives entity-specific tagging before pulping to maintain material identity through de-inking and forming stages.

A recycled cellulose pulp composition incorporating ultrafine cellulose ester staple fibers to enable wet laid product processing.

A conveyor winch pulls plait from a pulper and feeds it directly to a shredder, eliminating hazardous intermediate cutting steps.

Separate coarse crushing portions process edge surplus from sheet cutting, reducing apparatus volume by eliminating dedicated pulpers.

A recirculation conduit regulates moisture content by returning organic pulp to the processing chamber, preventing sieve clogging from varying product humidity.

A two-stage pulverizing apparatus processes paper powder using controlled blade gaps and high peripheral speeds to achieve fine particle sizes.

Adding cellulose ester staple fibers to recycled pulp increases freeness and air permeability, resolving slow water drainage issues during wet-laid processing.

Liquid supply lowers fiber tensile strength to 60% or less, reducing energy consumption during cellulose separation.

Neutral pH magnesium silicate deinking removes chromophoric generation without caustic-induced yellowing, preserving fiber tensile strength.

Molded cellulose equipment filters fiber-rich wastewater streams to separate solids from liquid effluent.

Replacing mechanical gears with magnetic torque eliminates transmission complexity while enabling precise speed control of the processing vessel.