Title:
【発明の名称】写真印画紙用支持体であるポリオレフィン樹脂被覆紙の再生利用方法
Document Type and Number:
Japanese Patent JP2662438
Kind Code:
B2
Abstract:
PURPOSE:To regenerate a coated paper for a base of a photographic printing paper at a low cost by peeling polyolefin resin with an alkaline liquid, etc., and adding the separated pure pulp component to a virgin pulp component. CONSTITUTION:A coated paper produced by compounding natural pulp with a polyolefin resin (e.g. polypropylene) is immersed into an alkaline liquid such as sodium hydroxide to peel the polyolefin resin. The peeled resin is separated with a pulper to leave a pure pulp component, which is added to a virgin pulp preferably at a ratio of <=30%.
Inventors:
KAMIGAKI YASUNOBU
MIURA ISAO
TATSUKI SHOJI
MIURA ISAO
TATSUKI SHOJI
Application Number:
JP8062589A
Publication Date:
October 15, 1997
Filing Date:
March 30, 1989
Export Citation:
Assignee:
MITSUBISHI SEISHI KK
International Classes:
G03C1/775; D21B1/32; (IPC1-7): D21B1/32
Domestic Patent References:
| JP4739702A | ||||
| JP4887105A | ||||
| JP5840556A |