EVA Emulsion

EVA hot melt adhesive is a solvent-free, water-free, 100% solid fusible polymer. It is solid at room temperature and becomes a liquid adhesive that can flow and has a certain viscosity when heated and melted to a certain degree. It is light brown translucent or white after melting.   EVA hot melt adhesive is mainly made of the following four components: base resin, namely EVA resin, tackifying resin, wax, antioxidant, and a small amount of filler can be added in some occasions to increase the gap filling and reduce costs.   EVA hot melt adhesive has the following characteristics: (1). It has fast curing, low pollution, strong adhesion, and the adhesive layer has certain flexibility, hardness, and toughness; (2). After the adhesive liquid is applied to the adherend and cooled and solidified, the adhesive layer can be heated and melted again to become an adhesive body and then bonded to the adherend, with a certain degree of re-adhesion; (3). When using, just heat and melt the hot melt adhesive into the required liquid state and apply it to the adherend. After pressing, the bonding and curing can be completed within a few seconds, and the hardening, cooling and drying can be achieved within a few minutes.   The type of EVA determines the cohesive strength, flexibility, adhesion to the substrate and processability of the hot melt adhesive. For hot melt adhesive, the following properties of EVA should be paid attention to: molecular weight and its distribution, vinyl acetate (VA) content, crystallinity, softening point, melting point, melt index (MI) and melt viscosity, etc., because these properties directly affect the various properties of hot melt adhesive.   As the melt index of EVA increases, its strength, hardness, softening point and viscosity all decrease regularly; and the more VA content in EVA, the greater the elongation at break and the lower the hardness. In addition, when the VA content exceeds 30%, although the adhesion to polar and various non-porous non-polar substrates is improved, this EVA polymer is incompatible with wax, which is a point to be noted when designing hot melt adhesive formulas. In a formula, it is often necessary to use EVA with different MI or EVA with different VA content to obtain satisfactory comprehensive performance.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

The formulation and production process of vae emulsion waterproofing materials involve a variety of ingredients and steps.   Formulation: The main component of VAE emulsion is vinyl acetate copolymer, which provides adhesiveness, stability and elasticity, as well as emulsifier, defoamer, stabilizer and auxiliary agent. These ingredients help to form a stable emulsion state, increase its adhesion and durability, and depending on the specific application needs, additives such as thickeners and preservatives may be added.   Production process: The production process includes raw material preparation, mixing, heating, emulsification, pH adjustment and adding additives. First of all, the ethylene acetate copolymer and other raw materials are added to the reaction kettle, adding an appropriate amount of water to stir and mix, and then heating to a certain temperature to start the polymerization reaction, adding emulsifier through stirring and high-speed shear to form a stable emulsion, adjust the pH value according to the need, and finally add additives, packaging and sealing.    In addition, there are other ingredients such as polyurethane emulsion, thickener, dispersant, etc., used to improve the bond strength, durability, softness, wrinkle resistance and so on. These ingredients are widely used in different fields such as building materials, textile printing and dyeing, paper industry, coatings industry and adhesives.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.   Related Products: VAE CW 40-705 VAE CW 40-707 VAE CW FH-Ⅱ

The ethylene segment is introduced into the VAE emulsion molecule, which acts as a plasticizer and reduces the glass transition temperature and film-forming temperature, thus giving the VAE emulsion adhesive many excellent properties. 1. It has good initial tack, wet tack and fast curing speed. It can harden the conjunctiva in 5-10 minutes at room temperature. So it is stable in storage. 2. The cured adhesive film is colorless and transparent, flexible and not brittle, with good resilience and an elongation of up to 600%. 3.  Good water resistance, alkali resistance, wear resistance, creep resistance, freeze-thaw resistance. The performance of VAE film will not change even after being soaked in weak alkali and weak acid media for 1 year. 4. Good weather resistance, UV resistance, not easy to oxidize and age. 5. It is non-toxic, odorless and harmless, suitable for hygiene and food purposes. It can be used to produce hygiene materials, such as sanitary napkins, diapers, medical cloths, wipes, surgical caps and other disposable cloths and food packaging. 6. Good compatibility with other water-based adhesives. And it is easy to modify to obtain new properties. 7. Low surface force, suitable for bonding materials with low surface properties, such as PE, PP, PS, etc. 8. It has strong adaptability and excellent adhesion to a variety of materials, especially film products such as PVC, PET, PA, etc. 9. The dry adhesive film after the water has evaporated can be hot-melt sealed at a heat sealing temperature of 82-90°C. 10. It is easy to apply and clean glue, convenient and safe to use.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

  VAE (vinyl acetate-ethylene) emulsion is widely used in the textile industry for various applications. Some of the key applications of VAE emulsion in the textile industry include:   1. Textile binders: VAE emulsions are used as binders in textile printing and finishing processes. They provide excellent adhesion and cohesion properties, allowing the pigments and other additives to adhere to the fabric effectively.   2. Non-woven fabrics: VAE emulsions can be used as binders in the production of non-woven fabrics, such as spunbond, meltblown, and needle-punched fabrics. They enhance the strength, stability, and durability of the non-woven fabrics.   3. Carpet backing: VAE emulsions are commonly used as binders for carpet backing. They provide good adhesion between the carpet fibers and the backing material, ensuring the stability and longevity of the carpet.   4. Textile coatings: VAE emulsions can be applied as coatings on textiles to improve their performance properties. They can enhance the fabric's water repellency, stain resistance, and durability.   5. Textile laminates: VAE emulsions are used in the production of textile laminates. They are applied as adhesive layers between different fabric layers or between fabric and other materials to create laminate structures with desired properties.   6. Textile sizing: VAE emulsions can be used as a component of sizing formulations, which are applied to yarns or fabrics to improve their weaving or knitting performance. The VAE emulsion provides lubrication and film-forming properties, reducing yarn breakage during the weaving or knitting processes.   Overall, VAE emulsions offer versatile properties that make them suitable for various applications in the textile industry, providing enhanced performance, durability, and aesthetics to textile products.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards,

VAE stands for Vinyl Acetate Ethylene, which is a copolymer emulsion used in the manufacturing of paints. VAE emulsion is made through the polymerization of vinyl acetate monomers and ethylene. It is commonly used as a binder in water-based paints and coatings.   In paint formulations, VAE provides several benefits: 1. Adhesion: VAE emulsion exhibits excellent adhesion properties, allowing the paint to bond effectively to various surfaces. 2. Flexibility: VAE-based paints form flexible films that can expand and contract with temperature and moisture changes, reducing the risk of cracking or peeling. 3. Water resistance: VAE emulsion enhances the water resistance of paints, making them more durable and suitable for high-humidity environments. 4. Low odor and low VOC: VAE-based paints typically have low odor and emit fewer volatile organic compounds (VOCs), contributing to improved indoor air quality. 5. Good workability: VAE emulsion provides good flow and leveling characteristics, making it easier to apply and achieve a smooth finish.   Additionally, VAE emulsion can be easily blended with other additives and pigments to achieve desired paint properties and colors. Its versatility and performance make it a popular choice for various paint applications, including interior and exterior coatings, architectural paints, and decorative finishes.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.

Polyvinyl alcohol (PVA) is generally considered safe for use in various applications, but it is still important to follow proper safety precautions. Here are some general safety guidelines for handling polyvinyl alcohol:   1.Personal Protective Equipment (PPE): Wear appropriate PPE, including gloves, safety goggles, and a lab coat or protective clothing, to prevent direct contact with the skin, eyes, or clothing.   2.Ventilation: Work in a well-ventilated area or use local exhaust ventilation to minimize inhalation of dust or vapors.   3.Handling: Handle PVA with care to avoid spills or releases. Follow proper handling procedures and avoid generating dust or aerosols.   4.Storage: Store PVA in a cool, dry, well-ventilated area away from incompatible substances, such as strong acids or oxidizing agents. Follow any specific storage requirements provided by the manufacturer.   5.Fire Safety: PVA is generally non-flammable, but it can burn under certain conditions. Take standard fire precautions and use appropriate fire-extinguishing methods for surrounding materials if a fire occurs.   6.Disposal: Dispose of PVA waste in accordance with applicable local regulations and guidelines. Follow proper waste management practices to prevent environmental contamination.   It's important to note that specific safety precautions may vary depending on the concentration, form (solid, solution, or film), and intended application of polyvinyl alcohol. Always refer to the safety data sheet (SDS) provided by the manufacturer for detailed information and customized instructions regarding the safe handling, storage, and disposal of PVA.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards

Starch-based adhesives and polyvinyl alcohol (PVA) are both commonly used types of adhesives, but they have some differences in their properties and applications.   Starch-based adhesives, as the name suggests, are derived from starch, which is typically sourced from corn, wheat, or other plant materials. These adhesives are natural, renewable, and biodegradable, making them environmentally friendly. Starch-based adhesives are often used in industries such as packaging, woodworking, and paper bonding.   On the other hand, PVA is a synthetic polymer that is water-soluble and known for its adhesive properties. It offers strong bonding strength and good film-forming abilities. PVA adhesives have a wide range of applications, including woodworking, bookbinding, paper packaging, and crafts.   In terms of performance, PVA adhesives generally have higher bonding strength and greater water resistance compared to starch-based adhesives. PVA adhesives also offer better flexibility and can adhere to a variety of materials.   The choice between starch-based adhesives and PVA depends on the specific application requirements and desired properties. Starch-based adhesives are favored for their sustainability and biodegradability, while PVA adhesives are known for their strong adhesion and versatility.     Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards