Kraft paper bags are made with a multi-layer structure, and the inner layers can be customized based on customer requirements. The outer paper can be either natural kraft or white kraft.

For example:
An outer layer of natural kraft laminated with a woven bag, a second layer of aluminum foil, and a third layer of kraft paper.

These bags offer high strength, water and moisture resistance, impact resistance, and ease of handling, making them ideal for packaging small-volume bulk powder or granular materials in heavy-duty applications.