Title:
LAYERED FILM AND LAYERED FILM SEPARATION AND RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2021/090690
Kind Code:
A1
Abstract:
The invention relates to a layered film comprising a resin film, a printed layer printed with a printing ink, and a resin layer containing polyvinyl alcohol provided therebetween and to a layered film separation and recovery method comprising a step 1 of immersing the layered film in water at 20 to 50°C and a step 2 of recovering the separated film. The invention provides a layered film and layered film separation and recovery method which enable a layered film to be separated and removed by water alone during the process of processing composite waste and separating the same into components for recovery.
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Inventors:
SENTE YASUHIRO (JP)
NAGATA YOSHITOMO (JP)
OHARA SHIN-ICHI (JP)
IWANAMI HIDEOKI (JP)
NAGATA YOSHITOMO (JP)
OHARA SHIN-ICHI (JP)
IWANAMI HIDEOKI (JP)
Application Number:
PCT/JP2020/039642
Publication Date:
May 14, 2021
Filing Date:
October 22, 2020
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
B32B27/30
Foreign References:
| JPH1185034A | 1999-03-30 | |||
| JP2009279781A | 2009-12-03 | |||
| JP3074000U | 2000-12-15 |
Attorney, Agent or Firm:
OGAWA Shinji (JP)
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