The Secret to Non-Peeling Labels: How Adhesives Determine Label Lifespan In everyday packaging, label peeling is a common yet troublesome problem – not only affecting product appearance but also potentially raising consumer doubts about quality. But have you ever considered that a crucial science lies behind this: adhesives? Adhesives: The "Invisible Guardians" of Labels Adhesives are more than just bonding agents; they are the precise bridge between the label and the packaging. An excellent adhesive formula needs to balance multiple characteristics: ▷ Initial tack: Ensuring immediate label adhesion ▷ Final tack: Maintaining firmness over time ▷ Environmental adaptability: Coping with temperature and humidity changes ▷ Substrate compatibility: Compatible with different packaging materials Sinograce Chemical's Scientific Solutions At Sinograce Chemical, we understand that every product has its unique "temperament." 1. Material Science Analysis: We conduct surface energy analysis of common packaging materials (plastics, glass, metals, etc.) and develop specialized adhesive systems for different materials. 2. Environmental Simulation Testing: Through rigorous temperature and humidity cycling tests, freezing tests, and aging tests, we ensure that labels remain intact in various extreme environments. 3. Application Scenario Adaptation: We adjust the flexibility and durability of the adhesive for different application scenarios, such as refrigerated foods, daily chemical products, and outdoor equipment. Labels may be small, but the science behind them is significant. Choosing Sinograce Chemical means choosing a scientific dedication to detail. Let your products always maintain a perfect image, starting with a non-peeling label. In the highly competitive retail market, every detail of product packaging influences consumer purchasing decisions. A peeling label can make your product look lackluster on the shelf. Today, we will delve into the technology behind adhesive formulas, revealing how to make labels "stick" under various challenges. Limitations of Traditional Adhesives Traditional adhesives often use a "one-size-fits-all" formula, making them unable to cope with: ▷ Tension on curved bottle surfaces ▷ Shrinkage in refrigerated environments ▷ Vibrations during long-distance transportation ▷ Temperature and humidity fluctuations due to seasonal changes We don't believe in "universal adhesives," only in precise matching: 1. Smart Responsive Adhesives For applications with significant temperature variations, we use temperature-responsive polymer adhesives. These adhesives maintain flexibility at low temperatures and increase cohesive strength at high temperatures, perfectly adapting to the entire process from cold chain to retail shelves. 2. Microstructure Bonding Technology To address different usage environments and bonding surfaces, we prioritize adhesives with a microstructure bonding layer. This structure significantly increases the contact points ...

Let's learn about the characteristics of water-based acrylic emulsion! 1. Excellent Adhesion The polymer structure of water-based acrylic emulsion facilitates the flow and wetting of molecular chains on the substrate surface, resulting in close contact between the coating and the substrate molecules, achieving high adhesion. 2. High Pigment and Filler Loading Capacity, Significantly Reducing Costs Water-based acrylic emulsion has excellent filling properties, and the total solid content of the coating formula can reach 60%. The ratio of resin to filler can reach 1:2, significantly reducing the cost of water-based wood paint formulations and application. 3. Zero VOC, Safe and Environmentally Friendly Water-based acrylic emulsion itself does not contain VOCs and can form a film at room temperature without the need for film-forming additives. Coatings using this formulation can have zero VOC content. 4. Excellent Water Resistance Water-based acrylic emulsion does not contain the surfactants used in ordinary acrylic emulsions and has specially designed hydrophobic groups. Therefore, water-based acrylic emulsion has excellent moisture resistance, preventing water molecules from penetrating the substrate after the paint film dries, achieving waterproof and moisture-proof effects. 5. Excellent Weather Resistance The molecular structure of water-based acrylic emulsion uses UV-stable monomer structures, and the emulsion is specially designed to allow TIO2 to be fully and evenly dispersed in the emulsion, reducing the impact of ultraviolet rays on the emulsion and effectively protecting the substrate. 6. Excellent Pigment Dispersibility Water-based acrylic emulsion has good compatibility with various water-based color pastes, maximizing the function of fillers and pigments, resulting in vibrant coating colors. Room 1013, Building A5, Financial Port Center, Yangzijiang Road, Baohe District, Hefei City， Anhui province, China Factory Address: Feidong County Industrial Park, Hefei City, Anhui Province, China +86 0551 63459511 sales@sinogracechem.com vivisinograce@outlook.com +8615755193346 http://www.sinogracechem.com

Polyurethane materials are a general term for a class of macromolecular compounds that have urethane structures in their molecular structure. They are usually prepared by the polyaddition reaction of diisocyanates and polyols. Polyurethane polymers possess both polar functional groups that allow for physical cross-linking and non-polar and flexible chain segments. When used properly, these polar functional groups can also undergo further chemical cross-linking. These molecular characteristics give polyurethane materials high strength, toughness, and solvent resistance. As a high-strength, weather-resistant, and highly adhesive material, polyurethane has been widely used in the coatings field. Based on the type of isocyanate used to prepare the polyurethane, polyurethane emulsions and corresponding paints can be divided into two main categories: aliphatic and aromatic. Aliphatic paint films have excellent weather resistance and anti-yellowing properties; aromatic water-based polyurethanes are mostly used for interior decorative paints. According to the size of the particles obtained during polymerization, there are two types: polyurethane emulsions and polyurethane dispersions. Water-based polyurethane dispersions use a unique process to disperse polyurethane particles in water, thus achieving film formation with water as the carrier. Similar to other emulsion film-forming mechanisms, the film-forming effect depends on the ability of the polymer molecules to interpenetrate between the particles. To increase penetration, on the one hand, the polyurethane molecular chains must be sufficiently flexible and have good fluidity; on the other hand, the emulsion particles should be as small as possible to increase the contact area between the particles and reduce the movement distance of the polymer molecules. Water-based polyurethane dispersions usually have nano-sized particles, appearing translucent or even completely transparent, and are one of the best water-based paint base materials. Water-based polyurethane dispersions are sometimes called nano-emulsions to distinguish them from ordinary emulsions, which have a white appearance. Room 1013, Building A5, Financial Port Center, Yangzijiang Road, Baohe District, Hefei City， Anhui province, China +86 0551 63459511 sales@sinogracechem.com vivisinograce@outlook.com +8615755193346 http://www.sinogracechem.com

Characteristics of Acrylic Polyurethane Topcoat Acrylic polyurethane paint, formed by the reaction of hydroxyl-containing acrylic ester and aliphatic polyisocyanate such as HDI trimer, has a paint film with excellent hardness and flexibility, and good chemical resistance. Its outstanding weather resistance, high gloss, good drying properties, and fast surface drying without dust adhesion make it the preferred topcoat in heavy-duty anti-corrosion coating systems. Due to its high hardness and excellent surface gloss, it is also used as polyurethane enamel and acrylic polyurethane enamel. Among polyurethane coatings and even all types of coatings, two-component solvent-based polyurethane coatings have excellent performance and therefore account for a large proportion. Among them, two-component acrylic polyurethane coatings are a new type of coating developed in recent years. Because their macromolecular structure contains both urethane chain segments and acrylic carbon-carbon long chain segments, they combine the advantages of both types of coatings. Durability: Acrylic polyurethane topcoats have very good durability, especially in terms0 of yellowing resistance. In a dry environment, they can withstand temperatures up to 120°C, but some aging and yellowing may occur. If long-term color retention is required, the maximum operating temperature for equipment and pipelines is recommended not to exceed 80°C. Applying too thick a coat can lead to blistering or poor film formation, affecting its performance. Chemical Resistance: Acrylic polyurethane topcoats have good resistance to chemicals, crude oil, gasoline, and general solvents, but their chemical resistance is not as good as polyester polyurethane topcoats. Paint Film Hardness: The hardness of acrylic polyurethane topcoats is not as good as epoxy topcoats, so epoxy topcoats can be used in areas such as ship decks or walkways. In the early stages of curing, acrylic topcoats are quite flexible and thermoplastic. Therefore, adhesion testing on newly applied topcoats may show relatively poor results. Adhesion will improve over the following weeks. This is mainly due to the product being applied at low temperatures or applied too thickly, or it could also be due to the primer being applied too thickly, allowing solvents to remain and react with isocyanates, such as certain epoxy primers containing butanol solvents Temperature resistance: Acrylic polyurethane paint loses its gloss quickly in high humidity and high-temperature environments. Low temperature and high humidity environments, as well as condensation or rainwater on the surface immediately after application, can lead to discoloration, loss of gloss, and blistering of the paint film.