A recycling method of multilayer packaging film waste

• Main Authors: KIM, MYEONG JUN, LEE, YOUNG CHUI, LEE, HYUNG CHAN
• Format: Patent
• Language: English; French; German
• Published: 26.07.2006
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; DISPOSAL OF SOLID WASTE; GENERAL PROCESSES OF COMPOUNDING; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECLAMATION OF CONTAMINED SOIL SOIL; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

Disclosed is a method of reclaiming a multilayered film which comprises a plastic layer including polyester (PET), polypropylene (PP), and polyethylene (PE) as main components, and an aluminum layer. The method comprises selective dissolution of aluminum, separation using a difference in specific gravity, selective extrusion using a difference in melting point, and selective dissolution using an organic solvent.