schuimrubber

Schuimrubber is a term used for flexible foams made by expanding polyurethane or other polymers into a cellular structure. It is widely used for padding in furniture, mattresses, automotive seats, packaging and sound or thermal insulation. The foam combines light weight with compressibility and resilience, allowing it to cushion impacts and fill irregular shapes.

Production and composition: Most schuimrubber is polyurethane foam produced from polyols and diisocyanates with blowing agents. The resulting cell structure can be open-cell or closed-cell, and the density and firmness are adjusted by formulation and processing conditions. Viscoelastic foams, often referred to as memory foam, are a denser subset that respond slowly to pressure and heat.

Types and properties: Open-cell foams are soft and breathable, used in upholstery cushions; closed-cell foams provide higher stiffness and better insulation. Polyether- and polyester-based polyurethanes have different durability and recovery characteristics. The foam's density often ranges from low-density upholstery foams to high-density memory foams.

Applications and care: Used in seating, bedding, car interiors, packaging and acoustics. They can be cut, glued, and laminated for custom shapes. Care includes avoiding prolonged sun exposure, cleaning with mild agents, and avoiding sharp objects that could puncture the foam. Many foams used in furniture are treated to meet fire-safety standards.

Environmental aspects: Foam production relies on petrochemicals and generates waste and emissions. Recycling options include grinding into crumb foams for cushioning or composite materials. Some producers are exploring bio-based polyols and closed-loop recycling.