Adhesive BF-4

Adhesive BF-4 is a solution of polyvinyl acetals with resole phenol-formaldehyde resins. Adhesives are manufactured in accordance with GOST 12172 and approved process regulations.

Category: Phenol-Formaldehyde Adhesives

Purpose: Aerospace industry

Purpose: Automotive industry

Purpose: Shipbuilding

Purpose: Household use

Technical Specifications
Main purpose and application

Technical Specifications

Film adhesive is supplied in rolls. Film thickness, width, and length in a roll correspond to the values specified in the table.
1. Appearance:
Adhesive film of yellow or light brown color, transparent or slightly matte, free of foreign inclusions and contamination.
2. Mass fraction of volatiles, %, not less than: 2.5
3. Thickness, mm:
0.05±0.02
4. Surface density, g/m²: 35–45
5. Shear strength, MPa (kgf/cm²), not less than:
  • at 20°C - 14.7 (150)
  • at 60°C - 7.4 (75)

Main purpose and application

Aviation and mechanical engineering:
  • Bonding helicopter and aircraft parts (duralumin, stainless steel).
  • Manufacture of magnetic circuits in instrumentation.
Shipbuilding:
  • Repair of units operating in seawater.
Household repair:
Bonding leather, rubber, textiles, plastics.