Plastic foams contact-bond

Shoe adhesives. CR adhesives are used for the permanent attachment of shoe soles. For difficult-to-bond sole materials (plasticized PVC, EVA foaming soles, thermoplastic rubber, SBR) graft polymer solutions of Neoprene AD-G combined with a polyisocyanate provide a good adhesion. Another major area for CR contact adhesives is the manufacture of leather goods, particularly leather shoe sole bonding and belt lamination. 

Contact Cements. In the household, contact adhesives are used in many areas for gluing and repairing. They are mainly used when larger and heterogeneous items (e.g., wooden materials with decorative laminates) are to be joined, when difficult parts (e.g., veneer strips on the curves and edges of furniture) are to be fixed, or when flexible materials such as rubber or leather (e.g., shoe repair) must be bonded or repaired. Furthermore, contact adhesives can be used to bond materials such as cork, felt, plastics, soft foams, and metals. 

Most contact adhesives contain a solvent and have a formulation tiiat combines a base of synthetic rubber such as polychloroprene or polystyrene-butadiene with reactive phenolic resins and metal oxides. In addition, there are also transparent types based on polyurethane which provide excellent bonding results for soft plastics such as plasticized PVC (used in many household articles). Recently, a solvent-fi-ee generation of contact adhesives, e.g, based on acrylate, has entered the market. This type can be used to bond solvent-sensitive materials such as polystyrene foam. 

The broad spectrum of adhesion displayed by acrylic adhesives make filled acrylics excellent candidates for bonding substrates made of cel-lulosics, leather, fabric, ceramic, foil, plastic, mietal, and various foams. Typical examples include panel and subflooring adhesives, decorative brick mastics, ceramic tile adhesives, carpet adhesives, floor tile adhesives, and contact adhesives. 

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