Title:
METHOD FOR PRODUCING RESIN FILM
Document Type and Number:
Japanese Patent JP2023018563
Kind Code:
A
Abstract:
To provide a method for producing a resin film having a specific gravity of less than 1 from a film label.SOLUTION: The method for producing a resin film comprises the following steps: preparing, as a starting material, at least either a film label that comprises an ink layer and a resin layer or a resin bottle to which the film label is fitted; recovering a thermoplastic resin having a specific gravity of less than 1 from the starting material; and obtaining a resin film having a specific gravity of less than 1 by means of extrusion molding from feedstock containing the recovered thermoplastic resin. The step of recovering a thermoplastic resin having a specific gravity of less than 1 comprises the following steps: dividing the starting material or the resin layer into individual pieces; separating the ink layer from the film label or each piece of the film label, thereby obtaining the resin layer or pieces of the resin layer from which the ink layer has been removed; and subjecting the starting material, the resin layer or the pieces thereof to gravity separation, thereby recovering the starting material, the resin layer or the pieces thereof having a specific gravity of less than 1.SELECTED DRAWING: Figure 1
Inventors:
TAKAICHI HAYATO
Application Number:
JP2021122777A
Publication Date:
February 08, 2023
Filing Date:
July 27, 2021
Export Citation:
Assignee:
GUNZE KK
International Classes:
B29B17/02
Attorney, Agent or Firm:
Kenji Tachibana
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