Sunkaier - Recycled Pulp Paper
Recycling paper into pulp involves breaking down old paper into fibers, removing contaminants, and then using the fibers to make new paper.
A paper recycling mill process line typically involves: collecting waste paper, sorting it, shredding and pulping the paper to break down fibers, de-inking to remove ink, cleaning and screening the pulp, forming the pulp into a sheet on a wire mesh, pressing and drying the paper sheet, and finally, finishing and reeling the recycled paper; with key stages including collection, sorting, pulping, de-inking, cleaning, sheet forming, pressing, drying, and finishing.
The typical recycled paper process includes collecting, sorting, shredding, pulping, cleaning, de-inking, bleaching, and forming.
Collection
Paper and cardboard is collected from homes and businesses, Different types and grades of paper are separated
Shredding
Paper is shredded into small pieces to increase surface area and make it easier to break down
Pulping
Shredded paper is mixed with water and chemicals to create a pulp , The pulp is strained through screens to remove plastic, staples, glue, and other debris
De-inking
The pulp is de-inked to remove ink from the paper fibers, This process uses flotation or chemical methods
Bleaching
The pulp is bleached to create a colorless base material, Bleaching is usually done with oxygen, chlorine dioxide, or hydrogen peroxide
Forming
The pulp is mixed with water and sprayed onto a fast-moving mesh to form a sheet, The sheet is pressed to remove water and then rolled and heated
Uses
Recycled paper is used to make new products including cardboard, newsprints, office paper, labels, bags, and gift cards