Plastic Recycling TRIZ Cases

Controlling ash content and molecular weight helps recycled styrene resin maintain extrudability, impact resistance, and molded appearance.

Residual heat from hot ceramsite dehydrates phosphogypsum, passivates harmful substances, and raises building material strength.

Dynamic covalent crosslinks let this thermoset composite retain strength in use while enabling lower-damage carbon fiber recovery during recycling.

Heated fluid in a twin-screw extruder decomposes thermoplastic resin while sensors and backflow suppression keep subcritical or supercritical processing stable.

A water-alcohol-ketone solvent system selectively separates polyamide and polyurethane blends for cleaner recycling and reusable polymers.

A PEG-water washing step removes VOCs and SVOCs from polyolefin particles, cutting odor and preserving recycled material properties.

Selective microwave heating speeds polyester depolymerization while protecting enzyme stability, cutting energy use and preserving other waste components.

Heating a waste suspension in a closed inert system near solvent boiling point enables fast plastic dissolution, safe separation, and solvent recovery.

Adsorbent added during polymer washing captures bleeding ink pigments, preventing recoloration and improving recycled material purity.

Calcium hydroxide catalysis enables lower-temperature polyester textile depolymerization, cutting energy use while preserving natural fiber quality.

Multiple ultrasonic vibrators create cavitation in a cleaning chamber to remove impurities from plastic chips more thoroughly and at lower cost.

Encapsulating modifiers in depolymerized polymer granules improves dispersion in asphalt and other formulations while reducing powder handling hazards.

Mixed plastic is melted on-site into hot-melt adhesive for container sealing, avoiding complex sorting and reducing landfill waste.

A non-petroleum PECA plastic uses controlled polymerization and thermal depolymerization to recover ethyl cyanoacrylate monomer in a closed loop.

Selective solvent washing, dissolution, filtration, and low-boiling poor-solvent precipitation remove impurities while preserving polyester strength and color.

Recovered pulp, absorbent material, and calcium from used paper diapers are combined in resin molding to improve reuse efficiency and cut waste.

Selective phenolic-solvent dissolution and precipitation remove fillers and additives from PBT composites while preserving molecular weight and strength.

Porous silicon carriers hold cellulose nanofibers apart during drying, enabling uniform powder dispersion and stronger resin, rubber, and CFRP mixes.

Selective solvent extraction and filtration aid remove contaminants and solvent residues from mixed polyolefin waste for drop-in recycled resin.

Supported metal-dioxo catalysts enable solvent-free polyester depolymerization at mild hydrogen pressure, yielding recyclable monomers with fewer oligomers.

A cleavable diacylhydrazine matrix lets FRP keep strength in use, then dissolve in hypochlorous acid to recover reusable fibers.

Blending heterophasic polypropylene with recycled PP-PE and a compatibilizing approach preserves impact and stiffness while lowering VOC and FOG.

Controlled PET-rich particulate waste plastics enable chemical recycling into new material compositions beyond the limits of mechanical recycling.

Multi-stage NIR sorting separates MSW plastics into particulate and film streams to raise purity, reduce manual sorting, and improve recycling yield.

Density-based sorting and electrostatic separation recover high-purity PVC from mixed waste while avoiding heating, solvents, and hazardous waste.

Controlled heating and cooling separate crystalline polymer as solid lumps, enabling high-purity recycling of alicyclic structure-containing polymer.

A titanium-antimony-phosphorus catalyst balances color and polymerization rate in crystallizable polyester made with recycled PET content.

Near-infrared reflection estimates recycled resin flowability, enabling molding conditions to be adjusted for stable quality despite feed variation.

By controlling polycarbonate molecular weight distribution and adding sulfonic acid salt and phosphate ester, this case improves flow and flame retardancy.

Liquid treatment starts matrix degradation during transport, cutting composite recycling time and cost while preserving longer reinforcement fibers.

CNN-enabled smart bins identify resin type, weight, and location to improve plastic waste segregation and route-based recyclable resin sourcing.

Dynamic polymerization plus radical-initiated compounding recycles off-spec copolymers into clear, stiff, impact-resistant pellets for injection molding.

A recycled and virgin bimodal HDPE blend improves ESCR and NCLS while preserving rigidity and melt strength for blow-molded articles.

PET waste is aminolyzed and crosslinked into vitrimer adhesives that keep bond strength while enabling thermal reprocessing and chemical recycling.

A tailored resin blend improves compatibility in recycled EVOH laminates, reducing die drool, fish eyes, and strength loss.

Sequential wetting with a cyclic amide and ionic liquid solvent system dissolves cellulose rapidly while lowering toxicity and energy use.

A two-part crosslinked ink coating stays on polyolefin labels during hot caustic wash, reducing PET flake staining and contamination.

DCM pre-treatment separates non-polyester impurities from waste polyester, improving feedstock purity while reducing energy-intensive recycling cleanup.

Magnetic removal, water washing, and pulverization turn mixed contaminated plastic waste into moldable resin powder with stable properties.

Using cycloalkyl alkyl ether in both dissolution and precipitation cuts solvent separation, lowers energy use, and improves polymer recovery.

Automated image analysis and material testing set virgin-recycled feed ratios to control contamination in recycled plastic film extrusion.

Mixed plastic waste is pulverized and ratio-adjusted to mold stable resin bodies without separating low- and high-melting resins.

A glycidyl compatibilizer and polycarbodiimide help polyester-polyolefin blends improve melt flow, toughness, and recycled PET stability.

EPS and XPS waste is dissolved, decanted, and emulsified into water-based paint, cutting landfill volume and reducing solvent emissions.

Boronic ester metathesis enables elastomers to crosslink and decrosslink in specific solvents, avoiding high-temperature recycling limits.

A compact line separates textile-contaminated rubber, filters it with a gear pump, and mixer-extrudes recycled rubber with lower energy use.

Low-boiling solvent extraction, settling, filtration, and solid media remove color, odor, and cross-contamination from reclaimed polymers.

Controlled 500-800°C depolymerization with short residence time recovers styrene monomers while minimizing dimer, trimer, and side-product carryover.

A separate pressing rod assembly holds tire shape during inflation, cutting lift-cylinder load, leakage risk, and cylinder size.

Depolymerization, filtration, and repolymerization enable recycled polyester film with low-temperature flex resistance and stable continuous stretching.