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.

Introduction to Qianwei PUR Hot Melt Adhesive PUR (Polyurethane Reactive), also known as moisture-curing reactive polyurethane hot melt adhesive in Chinese. The main components are isocyanate-terminated polyurethane prepolymers, with polar and chemically active urethane (-NHCOO-) or isocyanate (-NCO) groups in the molecular structure. It exhibits excellent adhesion to materials such as wood, metal, glass, rubber, plastic, leather, fabric, and paper. Qianwei's PUR composite adhesive technology is mature and remains a superior adhesive in many fields. The Qianwei PUR hot melt adhesive involves both physical and chemical reactions during use: the physical reaction is similar to ordinary hot melt adhesives, exhibiting thermoplastic and cold-setting properties. It is applied in a high-temperature fluid state, and quickly crystallizes and sets upon cooling during bonding; the chemical reaction involves cross-linking of the reactive groups of Qianwei PUR with active hydrogen in the material to form polyurethane polymers within a few hours to a few days after bonding. The cured Qianwei PUR hot melt adhesive is a polyurethane rubber, with significantly better bonding strength, solvent resistance, paint resistance, heat resistance, and hydrolysis resistance than EVA hot melt adhesives, water-based, or solvent-based adhesives. PUR hot melt adhesive is 100% active ingredient, without any water or solvent volatilization, meeting the highest environmental protection standards for adhesives and is considered the greenest option. Advantages of Qianwei PUR Hot Melt Adhesive Contains no organic solvents, 100% solid content, environmentally friendly; Moisture curing, no drying process, fast and energy-efficient; Excellent initial strength, with crosslinking and curing function, resulting in even higher final bonding strength; Excellent heat resistance, water resistance, chemical resistance, and durability; Single-component type, easy for industrial automation and mechanized operation, high production efficiency PUR - Adhesive Material Types Mainly used for leather composite, fabric composite, and footwear composite.

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.