Factory Custom Pocket Spring For Furniture Sofa Inner Spring Unit Pocket Coil Spring

   Factory Custom Pocket Spring For Furniture Sofa Inner Spring Unit Pocket Coil Spring

                                               Product Descriptions

Inner Spring (The Broader Category)

"Inner Spring" is a more general term. It refers to any support system inside a sofa cushion or mattress

that uses metal coils or springs.

Pocket Spring is a type of Inner Spring system.

Think of it like this:

• Inner Spring is the category (e.g., "Vehicle").

• Pocket Spring is a specific, advanced type within that category (e.g., "Electric Car").

• Other types of inner spring systems include:

  • Bonnell Coils: The oldest type, hourglass-shaped springs connected with helical wires. Common in entry-

  • level furniture and mattresses. They can be noisy and transfer motion easily.

  • Offset Coils: An evolution of Bonnell coils, with a squared-off top and bottom designed to hinge with the

  •  movement of the body. Better than Bonnell but not as isolated as pocket springs.