COMPOSITE MATERIAL SEPARATION AND RECOVERY METHOD

• Main Author: TOKIMUNE AKIRA
• Format: Patent
• Language: English
• Published: 03.02.2014
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

PROBLEM TO BE SOLVED: To provide a composite material separation and recovery method for efficiently separating and recovering a composite material such as a laminate film of metal foil with less energy.SOLUTION: A composite material separation and recovery method for separating and recovering two or more types of thin-film materials from a composite material prepared by stacking the two or more types of thin-film materials selected from a thin-film material group consisting of various synthetic resin films, a synthetic resin sheet and metal foil via adhesives, includes at least: a crushing step of crushing the composite material into small pieces to obtain a crushed object; a thin-film material peeling step of bringing a permeable peeling agent solution into contact with the crushed object and peeling off the thin-film materials composing the composite material from each other to obtain a crushed mixture of the thin-film materials; and a separation and recovery step of separating the crushed mixture of the thin-film materials into a plurality of thin-film materials through separation processing based on a plurality of gravity separation operations using a plurality of gravity separation liquids different in specific gravity and recovering them.