Couch cushions are typically filled with polyurethane foam. This foam comes in different forms depending on its purpose in the cushion.
Understanding Upholstery Foam
Most couch cushions use some form of polyurethane foam. According to the provided reference, polyurethane is made from a combination of polyol and diisocyanate. This combination creates a wide range of foams that are used in many industries, not just furniture. The term "polyurethane foam" itself is a general term which includes a number of different types of foam, from memory foam to high density foam.
Types of Foam Found in Couch Cushions
- Polyurethane Foam: As noted, this is the most common material used. It can be manufactured in various densities and thicknesses.
- High-Density Foam: This is a firmer type, often used for support layers, offering durability and long-lasting shape.
- Low-Density Foam: Used for softer cushioning and padding.
- Memory Foam: A type of polyurethane foam that conforms to body shape. Often used in seat cushions for comfort.
- Fiberfill: Some cushions also include polyester fiberfill. This is often used to wrap the foam, making the cushion softer and more comfortable.
Other Materials
Sometimes, couch cushions might contain other materials:
- Feathers or Down: Although less common now, cushions can still contain feathers or down for a very soft feeling.
- Cotton or other Fabrics: Some cushions may contain cotton or other fabrics as additional fillers.
- Pocketed Coils: In higher end cushions, small springs that offer additional support and shape are sometimes included.
Cushion Construction
The internal construction of a couch cushion can vary, but often includes the following:
- Core Material: The primary support, usually polyurethane foam.
- Wrap: An outer layer of fiberfill, down, or other material for softness.
- Ticking: A protective layer around the core that helps prevent the foam from wearing out the cushion covers.
- Cover Fabric: The outer, decorative layer that you see and sit on.
Why the Variety?
The variety of materials and construction methods allows for different levels of comfort, support, and durability in couch cushions. Manufacturers will often combine different materials to achieve the desired feel and functionality.
