Polyurethane foam is an open-cell material commonly used in mattresses and seat cushions. It also is used heavily in the packaging of sensitive products, especially where lower ILD (Indentation Load Deflection) materials are needed. 

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Some applications of this material include:​

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• Case inserts

• Convoluted padding

• Small shipping boxes

• Clam shell inserts

• Form fit packaging

• Static-sensitive electronics

• Acoustic foam