Shanghai Duobang Chemical Co., Ltd. Single-component sponge spray adhesive DA-6100A I. Product Introduction 1. This product is a pure water-based sponge spray adhesive with good initial tack, strong final adhesion, long open time, and excellent high-temperature and water resistance. 2. Product and Process Parameters State: Milky white or light yellow liquid Viscosity: 1000-1200 mPaS Solid content: 55 ±2% Spraying amount: 30-40/m² Spraying distance: about 30cm (Do not use too high air pressure) Open time: 15-20 minutes Final adhesion: 2-4 hours to break Initial setting: After spraying the adhesive, wait for 1-5 minutes before bonding, the adhesion is optimal (the longer the open time, the greater the adhesion) 2cm thick sponge 180° bending does not bounce; high-density board sponge 90° bending does not bounce Heat resistance: 85℃ Water resistance: No degumming after soaking in tap water for 10 days. Uses: Mattress sponge, automotive interior, sofa, luggage, sponge and density board, leather, low-tension sponge, etc. II. Precautions 1. It is recommended to use a 1.8-2.0mm nozzle spray gun 2. Double-sided spraying is required 3. Do not use too much spray adhesive, try to use less, too much will cause slow drying and poor initial positioning 4. If higher heat resistance is required, increase the amount of spray adhesive appropriately 5. It is not recommended to add water to this product, adding water will affect the initial positioning (slow drying). If water is added, only deionized water can be added; 6. If spraying is not carried out for a long time, it is recommended to clean the spray gun in time, and rinse with pure water. 7. The gun should be washed with deionized water, not tap water or well water; III. Spray Adhesive Operation Method 1. Adjust the air and slurry output of the spray gun; adjust the sprayed adhesive layer to be a thin layer, both sponges need to be sprayed with adhesive, it is recommended to adjust the atomization to the minimum or turn it off. 2. After spraying the adhesive, wait 2-3 minutes before bonding for the best effect. After bonding, pressure can be repeated to set the shape, and a bonding pressure should be applied between the sponges. 3. It is recommended to move the sponges 0.5-1 hour after bonding. Processing should be carried out after 2 hours. 4. It is recommended to clean the inside of the spray gun at least twice a week. Due to the excellent water resistance of the product, it can be cleaned by soaking in solvent, soaking for 1-2 hours. IV. Common Problems and Solutions 1. Problem: No glue comes out after spraying for a long time Solution: Clean the spray gun in time and clean the inside of the spray gun regularly; 2. Problem: The sponge does not stick or the adhesion is low immediately after spraying the adhesive Reason: Too much or too little spray adhesive, slow drying due to too humid weather or too low temperature, oil stains or other foreign objects on the sponge, or damp sponge. Solution: Adjust the amount of spray adhesive. Extend the open time appropriately according to the weather conditions before bonding the sponge. Change to clean and dry sponge. 3. Problem: The bonded sponge cannot be reset Suggestion: If a second setting is required, do so before applying pressure.

Water-based automotive interior coating adhesive Excellent bonding performance, excellent heat resistance, water resistance, and aging resistance, a high-performance, versatile environmentally friendly adhesive material. Recommended product: Water-based automotive interior coating adhesive Fast positioning and bonding, high cohesive strength, and high bonding strength Adhesive composite of PVC, PP, ABS, XPE, PU, PET, wood, cloth, paper, etc.; automotive interior coating adhesive (inner door panels, instrument panels, armrests, etc.), automotive interior flocking adhesive (storage boxes, sealing strips, spare tire cover plates, etc.). Can be used for electrostatic flocking on various plastic parts (PVC, ABS, PU...), sponges, and metal parts. Composite bonding of difficult-to-bond substrates such as sponges, fabrics, genuine leather, PU synthetic leather, metal, and rubber. Product features: · Water-based system · Good bonding · Excellent bonding strength to various substrates · Can be used with a curing agent or alone · Excellent low-temperature resistance, wet heat resistance, and aging resistance Product parameters: Appearance Milky white liquid Blue liquid Solid content (%) 50±2 100 Viscosity (mPa·s) 2000~4500 Density (g/m3) 1.13±0.05 Coating finishing type.

Product Introduction 1. This product is a water-based sponge spray adhesive. It features good initial tack, strong final adhesion, long open time, and excellent high-temperature and water resistance. 2. Product and Process Parameters State: Milky white or light yellow liquid Viscosity: 1000-1200 mPaS Solid content: 55 ±2% Spraying amount: 30-40/m² Spraying distance: About 30cm (Do not use too high air pressure) Open time: 15-20 minutes Final adhesion strength: 2-4 hours to break Initial setting: After spraying the adhesive, wait for 1-5 minutes for adhesion, the adhesion is optimal (the longer the open time, the greater the adhesion). 2cm thick sponge can be bent 180° without rebounding; high-density board sponge can be bent 90° without rebounding. Heat resistance: 85℃ Water resistance: No delamination after soaking in tap water for 10 days. Uses: Mattress sponge, automotive interiors, sofas, luggage, sponge and density board, sponge and wood, footwear materials, leather, low-tension sponge, etc. Precautions 1. It is recommended to use a 1.8-2.0mm nozzle spray gun. 2. Double-sided spraying is required. 3. Do not use too much adhesive, try to use less, as too much will cause slow drying and poor initial positioning. 4. If higher heat resistance is required, increase the amount of adhesive appropriately. 5. It is not recommended to add water to this product, as adding water will affect the initial positioning (slow drying). If water is added, only deionized water can be added. 6. If spraying is not carried out for a long time, it is recommended to clean the spray gun in time, simply rinse with pure water. 7. The spray gun should be cleaned with deionized water, not tap water or well water. Spraying Operation Method 1. Adjust the air and adhesive output of the spray gun; adjust the sprayed adhesive layer to be a thin layer, both sponges need to be sprayed, it is recommended to adjust the atomization to the minimum or turn it off. 2. After spraying, wait 2-3 minutes for the best sponge bonding effect. Without pressure after bonding, the shape can be repeatedly set, and a bonding pressure should be applied between the sponges. 3. It is recommended to move the sponges 0.5-1 hour after bonding. Further processing should be carried out after 2 hours. 4. It is recommended to clean the inside of the spray gun at least twice a week. Due to the excellent water resistance of the product, it can be cleaned by soaking in solvent, soaking for 1-2 hours. Common Problems and Solutions 1. Problem: No adhesive comes out after spraying for a long time. Solution: Clean the spray gun in time and regularly clean the inside of the spray gun. 2. Problem: The sponge does not stick or the adhesion is weak immediately after spraying. Reason: Too much or too little adhesive, slow drying due to high humidity or low temperature, oil stains or other foreign objects on the sponge, or damp sponge. Solution: 1. Adjust the amount of adhesive. 2. Extend the open time appropriately according to the weather conditions before bonding the sponge.

◆ Product Features: DA-2668 is a high-viscosity pressure-sensitive adhesive made using the latest aggregation technology and based on a special functional group design. It features high peel strength, high initial tack, and high solids content. It is non-toxic, odorless, and environmentally friendly. The film is clear and transparent, with excellent resistance to heat and moisture. It exhibits superior adhesion to paper, metal, plastics (such as ABS, PVC, PC, FET, PMMA, etc.), and various other materials, especially difficult-to-bond substrates. DA-2668 has a certain degree of self-crosslinking, and after film formation, the crosslinking enhances its cohesion, making it suitable for high-temperature applications. It can be widely used in the bonding of various panels, membrane switches, and nameplates in electronic, electrical, and automotive products. It is also suitable for bonding noise-reducing and shock-absorbing materials such as foam and rubber. ◆ Technical Parameters: The following are typical values based on our product data. This data represents typical experimental values for our existing products. Since product development is ongoing, the company reserves the right to update product information without further notice.

Waterproof Composite Adhesive Model: DA-216 Waterproof composite adhesive, washable, waterproof and non-peeling, available in soft, medium-hard, and extra-hard types. The product exhibits excellent initial adhesion, requires no water dilution, and is ready for direct use. It offers excellent weather resistance (maintains adhesion even under high temperatures and freezing conditions), moderate softness, excellent flexibility, superior water resistance, strong adhesion, and excellent resistance to yellowing and good adhesion. Uses: Bonding foam-based materials, such as fabric-to-fabric, fabric-to-leather; various toy bonding applications, etc. Widely used in clothing, athletic shoes, and automotive seat cushion industries. Main Components: Acrylic butyl ester, acrylic acid, styrene, and other high molecular polymers, additives, and water. Product Appearance: Slightly blue viscous liquid Solid Content (%): 45±2 (adjustable) Viscosity (mPa•s, 25℃): 3000-20000 (adjustable) Density (g/cm3, 23℃): 1.04±0.02 pH Value: 6.5-9 Precautions 1. Do not mix with limewater or organic solvents. 2. Do not mix with other adhesives. 3. This product is a water-based adhesive, contains no organic solvents, is non-toxic, and non-flammable. Storage Conditions: Seal and store at temperatures not lower than 5℃, protect from sunlight. Shelf Life: 1 year. Packaging Specifications: 50kg/barrel, 120kg/barrel.

General Properties: Appearance Milky white gel Solid content (%) ≥ 55.0 Viscosity (mpa.S) (Brookfield,@25) 3000±500 PH 4.5～6.5 Glass transition temperature Tg (°C) -10～ -5 Residual monomer (%) ≤0.5

General Properties: Appearance: Milky white gel; Solid content (%): ≥55.0; Viscosity (mpa.S) (Brookfield,@25): 3000±500; PH: 4.5～6.5; Glass transition temperature Tg (°C): -3～-5; Residual monomer (%): ≤0.5

General Properties: Appearance Milky white gel Solid content (%) ≥ 55.0 Viscosity (mpa.S) (Brookfield,@25) 2500±500 PH 4.5～6.5 Glass transition temperature Tg (°C) -20 ～ -10 Residual monomer (%) ≤0.5

Various models of VAE emulsion, such as DA-102, DA-104, DA-101, and DA-264

Shanghai Duobang Chemical Co., Ltd. produces water-based medical pressure-sensitive adhesives. Made with selected high-quality polymer materials as the main components and using imported formulas, this environmentally friendly and safe medical-grade adhesive boasts good heat-clearing, anti-allergic, antibacterial, detoxifying, and anti-inflammatory effects. It can be directly applied to PE, EVA, band-aids, plasters, PU, and other films and non-woven fabric substrates to produce medical adhesive products with excellent biocompatibility.

Shanghai Duobang Chemical Co., Ltd. produces water-based composite adhesives. Made with high-quality polymer materials as the main component and using imported formulas, these adhesives are environmentally friendly, harmless, and healthy. They exhibit superior comprehensive performance and meet the requirements of various gluing processes such as roller coating, brushing, and scraping. They are suitable for the bonding of various materials such as fabrics, leather, EVA, sponge, and textiles.

Shanghai Duobang Chemical Co., Ltd. produces water-based flocking adhesive, which is made from selected high-quality polymer materials as the main component and developed using imported formulas. It is an environmentally friendly, safe, and healthy adhesive with good water-wash resistance, adhesion strength, and solvent resistance. It gives products good flexibility and feel, and is suitable for the textile, automotive, packaging, toy, decoration, and stationery industries.