General Overview of Stone paper production line

Stone Paper (also known as rock paper, paper from waste marble, mineral paper, or rich mineral paper) is a paper-like product manufactured from calcium carbonate bonded with high-density polyethylene (HDPE).

Stone paper is a term that describes a number of different formulas for making paper that have one key ingredient in common: calcium carbonate (waste stone rock, marble and tiles) rather than tree fibre.

Stone paper, true to its name, is made primarily of calcium carbonate, one of the most common substances on the planet. It is durable, oil and tear resistant, and waterproof which makes it perfect for packaging.

Compared with Traditional Paper (wood pulp paper), Stone Paper has many competitive advantages.

Eco-friendly：Per ton Stone Paper can save 20 trees, save 7480 gallons clean watrer, save 6 millions BTU energy, reduce 236 pounds carbon emissions, reduce 42 pounds liquid waste discharge, reduce 167 pounds solid waste discharge.

Less production cost： At least reduce 30% production cost, compared with Traditional Paper.

Waterproof：Can be used as waterproof materials, such as outdoors maps, cement bags...

Recyclable：After converted into pellets, it can be used again.

Applications

· books, journals, maps

· posters, banners

· tags and labels

· bags

underwater notepads

Main Components of Stone paper production line

1. Granules Making Line

In the high temperature and high pressure process environment, calcium carbonate powder, macromolecule materials and a variety of process auxiliaries are fully mixed and milled, and then extruded by screwing.

2. Film Casting line

The granules manufactured by the granulating machine are transported to the machine. After heating and strong pushing of the screw, the temperature of the raw material is raised and together with the molten PE material to be extruded into a "T" type die to form a three-layer composite sheet material, stretched by a casting roller and adjust the thickness of the product by controlling the speed, and then cooled and shaped by the cooling wheel set, and then flatten, visually inspect, thickness test,and static elimination, then cut off the ear materials and wind up the finished paper.

3. Surface Handling Line(Optional)

The paper is actually usable if it’s not being printed. Some packaging applications use raw stone paper for example. But if it needs to be decorated, the surface must be coated to make it receptive to printing inks.

This last step is where the double surface handling takes place, turning the raw material into paper and board series, named accordingly as RPD and RBD.

Company Profile

Nanjing Sumino Precision Machinery Co., Ltd. is a high-tech enterprise integrating scientific research, production and sales. It has always adhered to the business philosophy of integrity, equality, and customer benefits. In order to better improve the quality of equipment, it has entered a more professional and standardized Production track. We have established independent research and development technologies for seven categories of equipment including plastic sheet material, casting, bi-stretching, non-woven non-woven meltblown cloth, laminating film composite, recycled granulation environmental protection recycling system and coating machine manufacturing system. The center and production department provide a full set of professional technical solutions to meet the special needs of each customer. Among them, the biaxially oriented film manufacturing system includes: BOPP biaxially oriented film manufacturing system, PVC biaxially oriented shrink film production line, PET biaxially oriented film production line, BOPA biaxially oriented film production line, BOPA biaxially oriented film production line, etc.

Company Address: No. 11, Kaifeng Road, Moling Street, Jiangning District, Nanjing City, Jiangsu Province