In automobile manufacturing, Hot Melt or Solvent-Based adhesives have numerous purposes, such as applications in the trunk, roof linings, seat assembly, filter manufacturing, mounting brackets, emblems, trims and assembly boding.
To meet the requirements of automotive market, adhesives must have good adhesion to a variety of substrates such as leather, plastic, metal & non-woven, good processability, excellent heat resistance (Softening Point /SAFT) for be prepared for direct exposure to the sun and excellent holding power (Static Shear).
Currently the adhesives for the automotive segment are formulated mainly with polyolefin, EVA & polyurethane polymers; based on technological compliance and facing market trends, Dynasol Group has developed a new Styrene-Butadiene Copolymer that, due to its macro and microstructural characteristics, is capable of generating adhesives with excellent processability at medium-low temperatures (≈140°C), good adhesion properties, developing excellent resistance to temperature (Softening Point >120°C) and high cohesion properties without the need for chemical crosslinking, thus guaranteeing an adhesive with high resistance and durability.
An important point to consider is that for the manufacture of Solvent-Based adhesives, it is possible to use solvents listed in the VOC list exemptions, thus obtaining an adhesive safe for the end user and environmentally friendly.
Co-author(s): Jessica Nolasco Santiago