Method of reclaiming multilayered film waste

Details Method of reclaiming multilayered film waste Method of reclaiming multilayered film waste

2005-12-30

2009-10-06

Cain, Edward J (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Process of treating scrap or waste product containing solid...

C521S040500, C521S047000, C521S048000, C521S048500

Reexamination Certificate

active

07598297

ABSTRACT:
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.

REFERENCES:
patent: 2003/0125399 (2003-07-01), Zhang et al.

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