Plastic Recycling TRIZ Cases

Embedded molecular tags encode material type and recycling instructions, avoiding damaged labels and costly analysis for composite objects.

A water-soluble solvent and inorganic base remove cured or multilayer ink from plastic substrates, improving recycled plastic purity.

Mild acidolysis decomposes polyurethane waste, then acetoacetylated polyol converts degradation compounds into reusable polyol raw materials.

Selective solvent dissolution and vacuum separation recover polypropylene at high yield while cutting solvent discharge and environmental burden.

A glycerin-based complementary colorant helps recycled PET film keep low yellowing, low color difference, and usable strength and shrinkage.

Controlled magnesium, sodium, and phosphorus additives improve recycled PET chip dispersibility to cut pinholes, haze, and virgin PET use.

Ultrasonic sonotrodes, aqueous washing, and water treatment remove silicone from plastic film while preserving recycled plastic quality.

Cross-metathesis cleaves cross-linked DCPD thermosets into low-molecular-weight fragments, improving recyclability without losing backbone utility.

Metal carboxylate hydrate in extrusion depolymerizes polyurethane impurities in waste ABS, preserving surface finish and physical properties.

Transverse cutting separates contaminated cartridge sections so residual sealant can be removed and the plastic housing reused.

Oxidative salts and hydrogen peroxide break down crosslinked SAP into soluble polyacrylic acid under mild conditions for lower-energy recycling.

Phosphine oxide and related agents selectively cleave sulfur crosslinks under shear and heat, reducing odor while preserving rubber properties.

A recycled PET-derived terephthalate blend improves resin absorption, mechanical properties, and migration resistance with low volatility.

Heated screw mixing, roll crushing, and staged separation remove embedded hard particles from bituminous membranes for reusable output.

Controlled solvent dissolution, settling, and filtration remove pigments, odor, and polymer cross-contamination from reclaimed polymers.

Controlled twin-screw extrusion breaks rubber cross-links below 200 °C and low shear, limiting chain shortening and improving reclaimed compound properties.

Dissolving polycarbonate waste, agglomerating impurities, and precipitating resin improves color tone and mechanical properties.

RFID-tagged single-product containers make recovered rubber traceable, storable, and reusable in automated tire mixing cycles.

Closed-loop prewashing and washing enable on-site recycling of soiled plastic films while cutting footprint, fluid use, and odor.

Layering virgin polyethylene outside and PCR resin inside helps rotomolded parts keep smooth surfaces despite recycled resin variability.

Shredding degraded thermoplastic film into spring-like strips and heat-binding them creates usable mesh for cushioning, insulation, and packaging.

Uniform pump pressure across a perforated plate improves hydrogel cutting consistency, reducing uneven drying in SAP production.

An alkylsulfonamide devulcanizing agent enables reuse of vulcanized rubber while preserving scorch time, processability, and tire-part properties.

Surfactant-assisted detachment liquid separates printing layers from plastic laminates while suppressing re-adhesion for cleaner recycling.

CBC chain extension and CoPET alloying keep recycled polyester melt viscosity stable, improve spinning, and preserve yarn properties for textiles.

Independent injection sections and switchable distributors let molders vary virgin and recycled resin ratios while keeping container quality stable.

Intermittent steam activation bonds mixed non-recyclable plastic strips into uniform construction blocks without costly sorting.

Depolymerized polystyrene creates styrenic polymers that improve UV-monomer compatibility and replace styrenated acrylics in stable ink formulations.

Glass fiber, talc, a coupling agent, and an impact modifier help recycled PP/PE achieve structural-grade stiffness and toughness.

A vinylaromatic copolymer enables mixed post-consumer recycled polymers to stay compatible and mechanically useful without costly separation.

Dry hammer-mill, airflow, and electrostatic separation remove paper and aluminum contaminants to recover high-purity polymer pellets.

Segmented twin-screw kneading improves liquid phosphate ester dispersion in polycarbonate pellets, preventing unmelted resin, leakage, and color loss.

Metal-binding groups built into polymer chains enable oxygen-driven fragmentation into smaller biodegradable species while avoiding premature use-phase degradation.

A fluid-tight UV conveyor reactor uses an Archimedes screw to mix and degrade polymers at room temperature for scalable recovery of terephthalic acid and ethylene glycol.

Shear and stretching in a twin-screw kneader disperse 50-70 wt% recycled carbon fibers while preserving composite strength and elasticity.

Sequential metal, optical, screening, shredding, and air separation steps isolate a cleaner 2D polyolefin feed for chemical recycling.

Selective solvents separate polymer layers while limiting colorant dissolution, producing clearer recycled films and reusable solvent.

Blending rPET with a TMCD-based copolyester raises Tg and Tm while improving clarity, stiffness, and durability for engineering uses.

By blending polyester resin, glass fiber, and recycled fishing-net material, this case improves impact strength, rigidity, and heat resistance for lightweight automotive parts.

Sequential magnetic, optical, and aeraulic sorting isolates cleaner 2D polyolefin fractions for chemical recycling.

Dual cooling surfaces create selective precipitation conditions that separate similar polyolefins with higher purity and fewer purification steps.

Nonselective dissolution followed by weak and strong anti-solvent precipitation recovers polycarbonate and ABS or HIPS at high purity and yield.

Acid-catalyzed hydrothermal treatment degrades wool at 160-170°C, enabling cleaner, lower-cost separation and recycling of polyester fibers.

Ball-milling ground thermosets with a catalyst converts rigid crosslinked waste into reprocessable vitrimer networks with tunable properties.

Circulating acid hydrothermal treatment separates cotton from polyester fabric scraps while cutting solvent cost and environmental harm.

Fatty reagents loosen polyolefin chain packing so UPO-secreting fungal mycelium can penetrate and oxidize the plastic with low energy input.

Variable-speed multi-axis washing boosts friction, removes dead angles, and combines washing, conveying, and dehydration in less space.

Circulating bed material transfers heat uniformly in a fluidized pyrolysis reactor, limiting hot spots, side reactions, and product contamination.

Calculated base dosing from total acid number and water-oil ratio keeps LWP purification pH stable while reducing wastewater.

Sparse ester groups let polyolefin-mimic polyester copolymers depolymerize into building blocks with fewer unwanted by-products.