What are brown paper bags made of？

Brown paper bags are typically made from kraft paper, a durable and eco-friendly material produced through the kraft process. Here’s a breakdown of their composition:

1. Wood Pulp:

•Sourced from softwood trees like pine or spruce for strength and long fibers.

•Hardwood trees like birch or oak may be used for smoother finishes.

2. Kraft Process:

•The wood pulp undergoes chemical treatment to remove lignin, preserving cellulose fibers, which are essential for strength and flexibility.

3. Additives (Optional):

•Starches or resins may be added to improve water resistance and durability.

•For specific needs, coatings (like PE) or laminations may be applied for moisture resistance.

4. Natural Color:

•The characteristic brown color is due to minimal bleaching, making it more environmentally friendly than white paper.

Brown paper bags are widely appreciated for their recyclability, compostability, and cost-effectiveness, making them a popular choice in sustainable packaging.