The document is a technical bulletin from 3M do Brasil presenting the 3M™ Spray Adhesive 76. It describes the product as a lightweight, portable aerosol adhesive that delivers a fast initial tack and a long open‑time, without creating a mist. Detailed physical‑chemical characteristics are listed (amber‑clear color, 13 % solids, acetone/hydrocarbon solvent base, density 0.78 g/cm³, temperature resistance up to 85 °C, coverage ≈2.8 m² per can). The bulletin provides reference adhesion test results (psi) for a range of substrates after a 10‑minute open time and 21‑day ambient aging, as well as static‑peel (inches) data at temperatures from 25 °C to 80 °C after 7‑day aging. Practical application instructions cover surface preparation, spray technique, open‑time, pressure, and nozzle‑clog prevention. Storage recommendations (15‑25 °C, 24‑month shelf‑life) and safety precautions (flammable solvents, ventilation, temperature limits) are outlined. The document ends with a legal disclaimer limiting 3M’s liability and providing contact information for the Industrial Tapes and Adhesives division.
Topics
Portable Spray Adhesive Overview and Intended Use
Introduces Spray Adhesive 76 as a lightweight, aerosol‑delivered adhesive designed for applications requiring a portable, non‑mist spray and a long open‑time.
Physical and Chemical Product Characteristics
Lists key specifications: amber‑clear color, fine syrup consistency, synthetic resin/elastomer base, ≥13 % solids, acetone/hydrocarbon solvents, density 0.78 g/cm³, coverage ≈2.8 m² per can, temperature resistance up to 85 °C.
Adhesion Performance Across Common Substrates
Presents reference peel‑force data (psi) for substrates such as canvas, steel, PVC, polyester, glass, butyl, neoprene, polypropylene, polyethylene, nylon, polycarbonate, and phenolic after 10 min open time and 21‑day ambient aging.
Static‑Peel Resistance at Elevated Temperatures
Shows static‑peel measurements (inches) for the same substrates after 7‑day aging, tested at 25 °C, 50 °C, 60 °C, 70 °C, and 80 °C, highlighting temperature‑dependent performance.
Application Procedure and Best‑Practice Guidelines
Step‑by‑step instructions for surface preparation, spray distance (10‑20 cm), actuator operation, solvent evaporation time, open‑time, pressure, and nozzle‑clog mitigation.
Storage, Shelf‑Life, and Safety Precautions
Specifies storage temperature range (15‑25 °C), 24‑month shelf‑life, flammable solvent handling, ventilation requirements, and temperature limits for the pressurised can.