Title:
【発明の名称】金属および合金からペイント、ラッカーおよびその他コーティングの除去方法
Document Type and Number:
Japanese Patent JPH09500420
Kind Code:
A
Abstract:
This invention relates to novel methods for removing paint, lacquers and other coatings from metal and alloy materials, in particular metallic cans. One method of the present invention involves a combination of steps including: (i) a pre-treatment step to alter the structure of the paint, lacquer or other coating, such pre-treatment preferably involving heat, making the coating more amenable to biostripping; and (ii) contacting the metal or alloy material with a bacterial culture capable of removing said coating. In an alternative method the combination of steps includes: (i) a heat treatment step to alter the structure of the paint, lacquer or other coating; and (ii) an abrasive treatment involving contacting the heat treated coated metal or alloy material in step (i) with a similarly heated material and/or with an untreated and/or uncoated like metal or alloy material, wherein the contact is caused by rolling in a rolling reactor. The abrasion step makes the paint, lacquer or coating of the metal or alloy in step (2) amenable to stripping with a fluid which fluid is either present in the rolling reactor or is jet sprayed onto the heat treated and abraded coated metal or alloy material. The removed paint, lacquer or other coating, and/or the liquid used to remove the coating is treated with orgamisms such as bacteria, capable of degrading said coating, before subsequent disposal.
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Inventors:
Macquarister, Peter, James
Roy, Ian
Hoffman, Warwick, Arthur
View part, Susan, Merrill
Roy, Ian
Hoffman, Warwick, Arthur
View part, Susan, Merrill
Application Number:
JP50421395A
Publication Date:
January 14, 1997
Filing Date:
July 15, 1994
Export Citation:
Assignee:
Technological Resources Proprietary Limited
International Classes:
C12N1/14; B08B7/00; B09B3/00; B09B5/00; B44D3/16; C09D9/02; C12N1/20; C12P1/02; C12S9/00; C22B1/00; C23G5/00; C12R1/82; (IPC1-7): C23G5/00; B09B3/00; B09B5/00; C09D9/02
Attorney, Agent or Firm:
Shinji Kouji (4 outside)