Preparation method of recyclable and reusable stone paper

Abstract

The invention discloses a preparation method of recyclable and reusable stone paper. A composition of the stone paper comprises 60 to 85wt% of natural inorganic mineral powder, 15 to 40wt% of polypropylene and 1 to 5wt% of an auxiliary agent. Continuous calendaring molding method is employed for preparation of the stone paper. It is unnecessary for the composition to be processed into a granular master batch. The composition is directly delivered into calendaring paper-making equipment, and the calendaring paper-making equipment comprises a raw material automatic dosing machine, an automatic mixing and stirring machine, a mixing and tabletting machine, a high density nipping machine, a five-wheel calendaring molding machine and a cooling and setting machine. The stone paper can be recycled for regeneration after utilization; only polypropylene, which accounts for a small portion of the stone paper, is lost after combustion; high temperature, black smoke and toxic gas are not generated; natural inorganic mineral, which accounts for a large portion of the stone paper, is left after combustion, is capable of returning to the soil and to the nature, and is friendly to the environment.

Description

[0001] This application is a divisional application, the original application number is: 201010276851.0, the application date is: September 9, 2010, the title of the invention is: manufacturing method of recyclable stone paper, the applicants are: Huang Junteng, Huang Junming. technical field [0002] The invention relates to a manufacturing method of environmentally friendly paper, in particular to a manufacturing method of recyclable stone paper. Background technique [0003] At present, a variety of synthetic papers have been invented in the world. Among them, the single-layer and multi-layer synthetic papers made of polypropylene as the main component material and inorganic mineral powder as the filler are all made of traditional plastic film products. Manufactured by formula; and in the process of single-layer or multi-layer co-extrusion, the forming die is made of a sheet with a straight die structure, and the two sides of the surface of the sheet are stretched longitud...

AI Technical Summary

Problems solved by technology

[0005] In view of the problems in the prior art, the purpose of the present invention is to provide a method for producing recyclable stone paper, so as to solve the problem that the conventional synthetic paper made of polypropylene plastic cannot be used in a short period of time if it is discarded outdoors. It is oxidized and decomposed in the natural environment within a short period of time, failing to reduce secondary pollution; and the cost of synthetic paper made is much higher than that of wood pulp paper.

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