REGENERATION AND UTILIZATION OF POLYOLEFIN RESIN-COATED PAPER USED AS BASE OF PHOTOGRAPHIC PRINTING PAPER

Title:

REGENERATION AND UTILIZATION OF POLYOLEFIN RESIN-COATED PAPER USED AS BASE OF PHOTOGRAPHIC PRINTING PAPER

Document Type and Number:

Japanese Patent JPH02259179

Kind Code:

A

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%.

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Inventors:

KAMIGAKI YASUNOBU
MIURA ISAO
TATSUKI SHOJI

Application Number:

JP8062589A

Publication Date:

October 19, 1990

Filing Date:

March 30, 1989

Export Citation:

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Assignee:

MITSUBISHI PAPER MILLS LTD

International Classes:

G03C1/775; D21B1/32; (IPC1-7): D21B1/32; G03C1/775

Domestic Patent References:

JPS4739702A
JPS4887105A	1973-11-16
JPS5840556A	1983-03-09

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