Plastic Recycling TRIZ Cases

UV-excited delayed luminescence and predictive sensing sort plastic types and colors with high accuracy while reducing waste and energy use.

Hydroxyl fatty acid ester improves resin flowability while maintaining shock resistance.

Porous carbon compatibilizer, pre-crystallization, and solid-state polymerization improve mixed PET blend recycling.

Dichloromethane treatment filters dyes, dirt, and foreign polymers before recycling, reducing downstream purification and waste.

This case combines post-industrial recycled and virgin polymer in extruded film to retain strength, sealability, and printability.

A polypropylene resin blend balances recycled content with consistent expansion, closed cells, and improved molded-bead appearance.

Direct scrap overlap and resin curing reduce composite waste while retaining strength.

This case uses calcium hydroxide at 80–240°C to recycle polyester into reusable molecules while protecting cotton and other natural fibers.

Melt-mixed polycarbonate blends balance scratch resistance, impact strength, thermal resistance, recycled content, and high melt flow.

Demetra oxidizes and depolymerizes untreated polyethylene in a few hours, avoiding aggressive pre-treatment and reducing energy demands.

This masterbatch embeds enzymes or microorganisms in a carrier to support polymer degradation through industrial plastic processing.

A polycarbonate blend with aromatic polyester and inorganic filler balances strength, moldability, and resistance to thermal deformation.

This case combines catalytic aminolysis with water hydrolysis to recover amines and polyols without high-pressure hydrolysis equipment.

One-step catalyst processing improves hue and properties in recycled polyester elastomers.

This case replaces costly dissolution or monomer decomposition with solvent swelling to recover polymer fine particles.

This case uses fungal metabolites to partially depolymerize polymers, supporting mixed-material recycling without sterile conditions.

This case uses formula (I) stabilizers such as cysteine to preserve polylactide molecular weight and viscosity during melt processing.

Controlled screw kneading recycles polyolefin-rich laminates without layer separation, while antioxidants and low pressure limit burning.

Self-crosslinking acrylic and polyurethane inks resist dissolution, preventing staining during recycled PET flake processing.

Pre-heating solid polyurethane articles and mixing them with toluene diisocyanate supports continuous liquid pre-polymer production.

Controlled magnesium, sodium, and phosphorus compounds limit aggregation in high-recycled-content PET film, reducing pinholes and haze.

Controlled screw speed and ejection pressure recycle polyolefin laminates without separating their individual layers.

A recycled and virgin PET chip blend balances film processability, breaking strength, elongation, and thermal shrinkage.

Glycerin-based colorants reduce yellowing in recycled PET film while retaining strength.

HFIPA and DCM dissolve waste polyester so filtration removes impurities before solidification and solvent reuse.

Reactive extrusion tunes rPET viscosity to 0.5–0.7 dL/g for transparent, stable, shatter-resistant thin-wall containers.

This purification approach combines fluid cleaning with controlled abrasion to reduce surface contamination and broaden recycled plastic use.

This case uses solvent extraction and centrifugation to recover polyurethane from mixed fabrics for recycled elastic fiber production.

Multi-stage size reduction and adhesive nebulization restore mechanical resistance in recycled fiber-reinforced polymers.

High M.F.I. recycled polystyrene processed via controlled extrusion parameters reduces raw material costs while maintaining low heat conductivity.

A repaired plastic product uses a second plastic material with infrared visible particles in welding segments to restore structural integrity.

Peroxide-induced chemical reactions eliminate gel structures in polyethylene recyclates, resolving the trade-off between purity and mechanical strength.

An olefin mixture of ethylene-alpha olefin interpolymer and propylene elastomer improves recycled polymer mechanical properties.

Microwave irradiation selectively cleaves carbon-sulfur bonds in vulcanized rubber, overcoming low devulcanization rates and non-selective degradation.

A liquid acrylic syrup formulation with controlled viscosity enables homogeneous fiber impregnation in composite manufacturing processes.

A cutting device uses a rod-shaped blade body with multiple peripheral edges to extend operational life through sequential edge usage.

Water-mediated hydrolysis extracts polyols from polyurethane waste, eliminating explosion hazards and dark coloration caused by peroxide initiators.

Calcium stearate protects brominated flame retardants from zinc stearate induced decomposition during thermal processing.

Disulfide and imine bonds in a composite chain extender raise hot-pressing repair efficiency of thermosetting polyurethane from 59% to 97%.

Ultraviolet light cures prepreg sheets in an inline mold assembly, eliminating slow thermal cycles and manual ply placement.

A building drum adjusts its diameter via an axial drive mechanism to process multiple tire specifications.

A liquid carrier stabilizes biological entities within polymer matrices, preventing enzyme denaturation during extrusion.

A polymeric composition combines post-consumer recycled polycarbonate with renewably sourced polycarbonate and recycled carbon fibers.

Cooling doubled rubber panels to -20°C reduces adhesion forces, allowing easy separation and preventing material waste during conveyor belt production.

A method for catalyzed hydrolytic depolymerization of poly(alpha-hydroxy acid) using water as the sole reactant and solvent.

Virgin polypropylene homopolymer stabilizes recycled polyolefin blends, resolving the trade-off between sustainability and mechanical consistency.

Fatty acid ester emulsions remove contaminants from recyclable plastic at low temperatures, eliminating energy-intensive heating and flammable solvents.

A two-stage screw extrusion process recycles post-consumer nylon fabrics, reducing impurity impact on product performance and dyeing quality.

A curable rubber composition incorporates a reactive surfactant to form covalent links with the polymer matrix.

Subcritical water hydrolyzes fluorosulfonyl groups into sulfo groups, eliminating waste liquid from conventional alkali and acid treatments.