With the continuous development of packaging printing, label printing, flexographic printing, gravure printing and digital printing, the performance requirements for printing inks are becoming increasingly higher. In addition to good printability and color performance, inks also need to form stable adhesion on different substrates and meet requirements for water resistance, abrasion resistance, scratch resistance, low odor and low VOC emissions. In practical applications, the final performance of printing ink does not only depend on pigments and additives. The resin system also plays a key role. As the main film-forming and bonding component in ink formulations, resin directly affects pigment wetting, ink transfer, adhesion, film formation, flexibility and final resistance performance. Suitable Viscosity and Printabilit For water-based ink systems, suitable viscosity and flowability are important. If the viscosity is too high, it may affect ink transfer, leveling and printing stability. If the viscosity is too low, it may lead to insufficient coverage, unclear printing edges or uneven ink layers. Therefore, ink binder needs to provide a good balance between film formation, adhesion and formulation stability. Suitable water-based acrylic emulsion or polyurethane dispersion can help maintain good application performance in flexographic printing, gravure printing, paper printing and film printing.Pigment Wetting and Color Development Pigment wetting and dispersion stability are important factors that affect printing quality. If pigments are not well dispersed, problems such as uneven color, poor hiding power, sedimentation and flocculation may occur. In some cases, poor dispersion can also affect storage stability and production performance. A suitable water-based resin can help pigments wet and disperse more evenly, improving color paste stability and color development. For water-based paper inks, flexographic inks, gravure inks and packaging printing inks, a good pigment grinding system helps improve color performance and overall ink stability. Ink Adhesion on Film Substrates PET, PVC, PE, PP, OPP and BOPP films are widely used in labels, flexible packaging, composite packaging and decorative materials. However, these substrates have different surface properties, and some films have relatively low surface energy. When ink is printed directly onto these films, problems such as poor adhesion, ink peeling, scratch failure, poor lamination performance or reduced water resistance may occur. As a result, film ink systems require resin with good substrate wetting, film strength and adhesion performance. Water-based acrylic emulsion and polyurethane dispersion can help improve ink spreading and anchoring on film surfaces, making the printed layer more stable and reducing the risk of ink peeling during rewinding, die-cutting, lamination, transportation and other post-processing steps. Film Formation and Flexibility After drying, printing ink needs to form ...

The demand for environmentally friendly raw materials is reshaping the adhesive, coating, printing, textile and packaging industries. As manufacturers reduce the use of solvent-based systems, water-based polymer materials are receiving more attention in industrial formulation development. Water-based acrylic emulsion is one of the materials benefiting from this trend. It is valued not only for its environmental advantages, but also for its ability to meet different performance requirements in practical production, such as clear appearance, stable film formation, adhesion, water resistance and processing adaptability. In the adhesive market, the shift toward water-based systems is especially clear. Label manufacturers, packaging converters and tape producers are looking for adhesive solutions that can provide reliable bonding while meeting stricter environmental expectations. Acrylic emulsion-based systems can be used in transparent adhesives, label adhesives, pressure sensitive adhesives, packaging adhesives and film lamination applications. The printing and packaging sectors are also increasing their use of water-based materials. With the growth of flexible packaging, film labels and recyclable packaging structures, surface adhesion and coating stability have become more important. Acrylic emulsion can be used in water-based ink systems, printing primers and coating layers to help improve adhesion on paper, BOPP, OPP, PET, PVC and other substrates. In coating applications, water-based acrylic materials are used as film-forming binders to support surface protection, gloss, abrasion resistance and water resistance. For textile applications, acrylic-based binders can be used in textile coating, printing, nonwoven bonding and fabric finishing, helping improve durability and application performance. This wider adoption reflects a broader industry direction: manufacturers are not only looking for materials that can replace solvent-based systems, but also solutions that can improve production stability and final product quality. As a supplier of water-based polymer solutions, Sinograce Chemical provides acrylic emulsion products for adhesives, pressure sensitive adhesives, printing primers, coating binders, water-based ink resins, textile coating binders and packaging coating applications. Product selection can be adjusted according to substrate, process conditions and final performance requirements.

In recent years, the soft packaging, labeling, and decorative film markets have seen rising demands for print quality. Beyond color, clarity, and appearance, factors such as scratch resistance, rub resistance, and post-processing stability have become key concerns for manufacturers. In practice, printing quality is not determined solely by inks and equipment. For polyolefin films like BOPP, PP, OPP, and PE, the condition of the substrate surface can significantly affect ink adhesion and overall print performance. These films are widely used in food packaging, personal care packaging, labels, and decorative films due to their transparency, chemical resistance, and ease of processing. However, their inherently low surface energy and low polarity make it difficult for inks to wet and adhere reliably. As a result, printers may encounter issues such as: Ink peeling during tape testing Poor resistance to rubbing or scratching Ink detachment during rewinding or die-cutting Variability in print quality across different film batches Surface tension degradation during storage Reduced layer stability in subsequent processing These issues not only affect the final product appearance but can also lead to increased rework, material waste, and production adjustments. Corona Treatment Remains Fundamental, but Not Sufficient Corona treatment has long been a standard method to improve polyolefin film printability. By increasing surface energy, it allows inks to spread and adhere more effectively. However, the effectiveness of corona treatment depends on factors such as film formulation, treatment intensity, storage time, and environmental conditions. Its effect may diminish over time, and additives migrating to the surface can further impact ink wetting and adhesion. Consequently, even when using the same ink and process, different film batches may exhibit variable adhesion performance. While adequate for standard printing applications, higher-end projects often require additional surface solutions. Water-Based Print-Receiving Coatings as a Complementary Solution To further improve printability on low-surface-energy films, more manufacturers and printers are turning to print-receptive top coatings. Applied before printing, these coatings form a thin interface layer between the film and the ink after drying, improving ink wetting, spreading, and adhesion. Unlike modifying the ink formulation, top coatings enhance the film surface itself, providing a more stable foundation for printing. This can help minimize performance differences across batches and production setups. Well-chosen top coatings can also enhance the stability of printed layers during rewinding, die-cutting, and transport. Gloss and Matte Requirements Differ As packaging designs become more diverse, different surface aesthetics are needed. Some applications require high transparency and gloss for a vivid printed effect, while others prioritize a matte finish and soft tactile feel. These requirements i...

With the development of building reinforcement materials, external wall insulation systems, and fiberglass mesh self-adhesive tape, manufacturers are placing higher requirements on the flatness, mesh stability, joint positioning, and durability of fiberglass mesh. As a key auxiliary material in fiberglass mesh production, the performance of setting binder emulsion is receiving increasing attention from the industry. Fiberglass mesh is widely used in wall reinforcement, crack prevention systems, fiberglass mesh self-adhesive tape, joint tape, and other building materials. During production and further processing, if the warp and weft yarn intersections are not properly fixed, problems such as mesh deformation, loose edges, yarn shifting, and uneven slitting may occur. These issues can affect product appearance, processing efficiency, and final application performance. To meet this industry demand, water-based self-crosslinking acrylic binder emulsions provide a more stable material solution for fiberglass mesh processing. Through dip coating, the emulsion can be applied to the surface of fiberglass mesh. After drying and film formation, it helps fix the fiberglass intersections, improves the overall structural stability of the mesh, and helps the product maintain better shape during adhesive coating, slitting, winding, and application. Compared with ordinary binder emulsions, modified self-crosslinking emulsions offer improved bonding and positioning performance. They help enhance joint fixation of fiberglass mesh while providing good water resistance, anti-stripping performance, and processing adaptability. These properties make them suitable for fiberglass mesh self-adhesive tape, joint tape, and interior and exterior wall mesh applications. Taking Sinograce Chemical fiberglass mesh setting binder SA-2063 / SA-2064 as an example, this product series can be used in the dip coating and setting process of fiberglass mesh production. It helps improve mesh shape stability, joint positioning performance, and subsequent processing stability, providing a water-based binder solution for different fiberglass mesh specifications. For fiberglass mesh self-adhesive tape, also known as joint tape, the setting effect of the mesh is especially important. Insufficient setting may affect subsequent pressure-sensitive adhesive coating and slitting, leading to uneven mesh openings, loose edges, or unstable winding. A suitable setting binder helps keep the mesh flat and firm, improving processing adaptability in later production steps. In interior and exterior wall mesh applications, products often need to withstand cement mortar, putty layers, and other alkaline environments. Therefore, a setting binder should not only provide basic bonding and positioning performance, but also good water and alkali resistance to support the reinforcement effect of fiberglass mesh during construction and long-term use. At present, the requirements for fiberglass mesh setting binder...