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Adhesives based on Neoprene polychloroprene in both aqueous and solvent forms have a long, successful history for contact adhesives, lamination, foam bonding and pressure sensitive applications.
Contact adhesives can be used for furniture, kitchen cabinets, custom display cabinets, interior and exterior panels and partitions, footwear, automotive trim, roofing membrane attachment, and a
wide variety of related applications where quick, high strength permanent bonds are needed. In contact adhesives Neoprene offers "auto adhesion." Auto adhesion means that the substrates are coated with adhesive,
allowed to dry, then combined under light to moderate pressure. This results in an instant bond. The bond strength of the assembled components can undergo additional finishing operations without additional
clamping or fixturing. The hot strength (or heat resistance) of the assembled component is good to very good, depending on the adhesive formulation. In many cases the hot strength is sufficient to permit post
forming of thermoplastic substrates without the adhesive excessively softening or releasing due to the temperature of the thermoplastic component. Contact adhesives can also be formulated to provide long open,
or bonding time before the adhesive coated substrates are combined. This enables assembly operations to pre-coat or stage the preparation of substrates prior to bonding.
Another important application is for laminating aluminum foil to flexible substrates, typically kraft paper. In this case, the adhesive is applied at high speed lines onto one of the substrates and immediately combined under nip rolls. End usage for these laminates is for food packaging, heating and air conditioning facings, paper board can linings, and related applications requiring either decorative or barrier properties.
Neoprene is also useful as a pressure sensitive adhesive. Neoprene offers the convenience of a pressure sensitive application combined with good hot strength.
Adhesives based on Neoprene are available as either solvent or aqueous compositions. They can be low viscosity sprayable and roll coatable, intermediate viscosity brushable, or have high viscosity mastic-like consistencies. Through compounding, the adhesive can be adjusted to meet the application characteristics need for fast, efficient product assembly. |
