Product Model:
Runhuabang calcium carbonate powder in papermaking industry enhancing paper properties promoting resource conservation and meeting global demand for high quality paper products supporting packaging
Product Description
For the coating industry, active light calcium carbonate powder contributes to better opacity, brightness, and dispersion. It reduces production costs while maintaining or even improving the coating's performance, such as its resistance to weathering and abrasion.
In paper manufacturing, this powder is used to increase paper opacity, whiteness, and bulk. It also improves printability, allowing for sharper and more vibrant images on paper products.
In the rubber industry, active light calcium carbonate powder reinforces rubber compounds, enhancing their mechanical strength, tear resistance, and dimensional stability. It plays a crucial role in producing high-quality rubber products like tires, hoses, and seals. Overall, active light calcium carbonate powder is an indispensable material driving innovation and efficiency in multiple industrial applications.
Product Parameters
| Cas No. | 471-34-1 |
| Place of Origin | China |
| Color | White |
| Shape | Powder |
| Purity | 95-99% |
| Grade | Industrial Grade/feed grade |
| Package | 5-25kg/bag，customized package |
| MOQ | 1kg |
Calcium Carbonate Powder serves as an essential and irreplaceable filler as well as coating pigment in papermaking industry, widely applied across entire production chain of paper products to comprehensively improve quality and performance. Papermaking industry, which caters to global demands for diverse paper types from daily writing to high-end printing, constantly seeks materials that can simultaneously enhance paper strength, brightness, and smoothness while cutting down production costs, and calcium carbonate powder stands out as a versatile solution that fulfills all these critical criteria effectively and consistently. As a filler, calcium carbonate powder is precisely added to pulp during key stages of papermaking process, and its fine particles evenly disperse to fill tiny gaps between cellulose fibers. This filling action not only increases paper density significantly but also optimizes fiber bonding structure, making paper thicker and more substantial with better bulk. Such improvements are particularly vital for producing printing and writing paper, as they ensure paper does not easily penetrate ink during writing or printing and maintains flatness without warping after absorbing moisture.
Brightness of paper is a core factor directly affecting its quality and market competitiveness, especially for paper used in high-end printing such as brochures, posters and packaging boxes. Calcium Carbonate Powder boasts natural high brightness derived from its mineral structure, and when added to pulp in appropriate proportions, it significantly elevates overall brightness of paper without causing color distortion. This outstanding characteristic greatly reduces reliance on large amounts of chemical brighteners, which are not only expensive and increase production costs but also may release harmful substances during production and degradation, posing risks to water bodies and soil. Smoothness of paper is another key performance indicator enhanced by calcium carbonate powder, and this advantage is most prominent in coated paper production. Coated paper, widely used in high-quality printing like fashion magazines, art catalogs and product catalogs, takes calcium carbonate powder as main coating pigment due to its excellent covering ability. During coating process, the coating layer mixed with calcium carbonate powder is evenly applied to surface of base paper, and its fine particles fill in all surface irregularities and tiny pores of base paper, forming an extremely smooth and uniform surface. This smooth surface enables better ink absorption and ink layering, ensuring printed patterns and texts have clear edges, vivid colors and high definition, thus improving overall print quality remarkably.
Resource conservation and environmental protection have become major concerns driving transformation of papermaking industry, and calcium carbonate powder contributes significantly to these goals in multiple practical ways. Cellulose fibers, main raw material for papermaking, are mainly derived from wood. Although wood is a renewable resource, large-scale logging may lead to deforestation and ecological imbalance, and its regeneration cycle is relatively long, making it a limited resource in short term. By adding calcium carbonate powder as filler, amount of cellulose fibers needed per unit weight of paper can be reduced by 10% to 30% depending on paper type—for example, cultural paper can have higher addition ratio while thin tissue paper needs lower ratio. This fiber reduction not only directly saves massive wood resources but also cuts down energy consumption and water usage during pulping process. Statistics show that every 10% reduction in fiber usage can reduce water consumption by about 8% and energy consumption by about 6% in pulping stage. Additionally, calcium carbonate powder is abundant in nature and its mining and processing costs are relatively low compared to cellulose fibers. Replacing part of fibers with it can significantly lower overall production costs of paper products, enhancing market competitiveness of papermaking enterprises in fierce global competition.
Packaging and printing sectors are two major downstream consumers of paper products, and calcium carbonate powder plays a crucial tailored role in meeting their specific and strict requirements. Packaging paper, especially corrugated paper and carton board used for transportation packaging, needs excellent strength and stiffness to protect internal contents from collision and extrusion during long-distance transportation and storage. Calcium carbonate powder enhances tensile strength and ring crush strength of packaging paper by improving fiber bonding and reducing internal voids, making packaging boxes more durable and less likely to deform even when stacked with heavy loads. For printing sector, different printing methods such as offset printing, gravure printing and digital printing have different requirements for paper properties. Printing paper containing calcium carbonate powder has appropriate porosity and surface tension, which ensures good ink receptivity—ink can quickly adhere to paper surface without spreading or blurring. Meanwhile, the smooth surface formed by calcium carbonate powder allows ink to be transferred evenly, ensuring clear and consistent printing effects. With rapid growth of e-commerce industry in recent years, demand for packaging paper has surged globally. The application of calcium carbonate powder has enabled papermaking industry to increase production efficiency while ensuring quality, effectively meeting this explosive market demand.
Papermaking industry is undergoing profound transformation driven by digital technology, and calcium carbonate powder has demonstrated excellent adaptability to both digital and traditional papermaking processes, becoming a stable support for industry upgrading. Traditional papermaking processes such as Fourdrinier and cylinder machines have long relied on calcium carbonate powder as core filler and coating pigment. In Fourdrinier machines, calcium carbonate powder is added to pulp before it is formed into paper web, and its uniform dispersion helps maintain stable paper formation. In cylinder machines, which are suitable for producing thick paper, calcium carbonate powder enhances paper thickness and stiffness to meet product requirements. For digital papermaking processes, which pursue higher precision, faster speed and more consistent paper properties, calcium carbonate powder with strictly controlled particle size and distribution is used. For instance, digital printing paper requires calcium carbonate powder with narrow particle size distribution (D50 between 2 and 5 micrometers) to ensure stable surface resistance and ink absorption, avoiding printing defects such as color difference and spot. Moreover, research and development in papermaking industry are increasingly focused on producing more environmentally friendly paper products, and calcium carbonate powder, as a natural, non-toxic and biodegradable mineral material, perfectly aligns with this green trend. Future applications of calcium carbonate powder in papermaking industry may extend to development of more specialized paper products, such as water-resistant food packaging paper (by combining with waterproof agents) and flame-retardant paper (by synergizing with flame retardants), further expanding its important role in industry.
