Stone paper, also known as rock paper, mineral paper, paper from waste marble, or rich mineral paper, is an innovative paper-like material manufactured primarily from calcium carbonate derived from limestone, waste rock, marble, or tile waste. Unlike conventional paper, it does not rely on wood pulp or plant fibers as its primary raw material. Instead, finely ground calcium carbonate is blended with a non-toxic, recyclable high-density polyethylene (HDPE) binder to produce a strong, durable, and versatile material.
Stone paper is recognized for its excellent resistance to water, ultraviolet (UV) exposure, and tearing, making it suitable for a wide range of applications including posters, leaflets, packaging, labels, coatings, and bag products. It also retains its writing capability even under wet conditions, offering advantages over many traditional paper products and serving as an alternative to polypropylene in selected applications.
Production methods have been developed using formulations such as 80% limestone and 20% recycled polyethylene, demonstrating the use of recycled and mineral-based raw materials. The manufacturing process is promoted as environmentally responsible because it eliminates the need for wood pulp and avoids the use of chlorine and acidic chemicals commonly associated with conventional papermaking. The resulting product is described as non-toxic and food-safe while contributing to reduced pollution, lower energy consumption, and improved air, soil, and water quality. These characteristics position stone paper as a sustainable alternative for applications requiring durability, moisture resistance, and environmental performance.
| Particular | Value |
|---|---|
| Plant Capacity | 5 MT/Day |
| Land & Building (2 Acres) | Rs. 1.62 Cr |
| Plant & Machinery | Rs. 12.72 Cr |
| Working Capital for 3 Months | Rs. 1.88 Cr |
| Total Capital Investment | Rs. 16.55 Cr |
| Rate of Return | 17% |
| Break Even Point | 68% |
Stone paper is primarily made from calcium carbonate and a high-density polyethylene (HDPE) binder. Calcium carbonate is obtained from limestone or waste marble, rock, and tile materials that are finely ground into powder. This mineral powder is blended with a recyclable HDPE binder to produce a durable, paper-like material that offers high strength, moisture resistance, and long service life without relying on wood pulp.
Stone paper differs from conventional paper because it is produced without wood pulp. Traditional paper relies on plant fibers, whereas stone paper uses mineral-based raw materials and an HDPE binder. As a result, it provides enhanced water resistance, tear resistance, and UV resistance while reducing dependence on forest resources and avoiding chlorine-based papermaking processes.
Stone paper is used in a variety of printing, packaging, and labeling applications. It can be manufactured into posters, leaflets, bags, labels, coated products, and other specialty printed materials. Its moisture resistance and durability make it suitable for environments where conventional paper may deteriorate or lose performance.
Stone paper is promoted as an environmentally friendly alternative to conventional paper. It eliminates the need for wood pulp, avoids chlorine and acid compounds during production, and utilizes mineral resources including waste stone materials. The manufacturing approach is also described as reducing pollution and energy consumption while producing a non-toxic, food-safe product.
Yes, stone paper can be written on even in wet conditions. Its resistance to moisture helps maintain the integrity of the material where ordinary paper may become damaged. This property makes it useful for outdoor labels, maps, agricultural applications, and other situations where exposure to water is expected.
Stone paper production involves material preparation, compounding, film production, coating, and finishing. Based on the report, the process includes grinding the mineral powder, pelletizing, extrusion, blown film processing, coating, and cutting and finishing operations. These stages convert mineral-based raw materials into finished stone paper products with the desired properties.
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