Kraft paper bags are non‑toxic, odorless, and pollution‑free, boasting high strength and excellent environmental performance, making them one of the most popular eco‑friendly packaging materials worldwide. Made from kraft paper, these bags are widely used; at supermarkets, department stores, shoe shops, clothing boutiques, and other retail outlets, customers are typically provided with kraft paper bags to conveniently carry their purchases. As an environmentally friendly packaging option, kraft paper bags come in a wide variety of styles.

Kraft paper bags are made from all‑wood pulp paper and come in white and yellow varieties. A polypropylene (PP) coating can be applied to the surface for water resistance. Bag strength can be customized from one to six layers according to customer requirements, with printing and bag-making integrated into a single process. Opening and bottom‑sealing options include heat sealing, paper sealing, and glue‑down sealing.

Kraft paper bags can be classified into different types based on their material and design.

1: Based on material, they can be classified as follows: a. Pure kraft paper bags; b. Paper–aluminum composite kraft paper bags (kraft paper laminated with aluminum foil); c. Woven‑bag‑reinforced kraft paper bags (typically larger in size).

2: Based on bag type, they can be classified as follows: a. Three-side-seal kraft paper bags; b. Side-pleat kraft paper bags; c. Stand-up kraft paper bags; d. Zipper kraft paper bags; e. Stand-up zipper kraft paper bags.
3: Based on the bag’s external shape, they can be classified as follows: a. Valve bags; b. Square-bottom bags; c. Seamed-bottom bags; d. Heat-sealed bags; e. Heat-sealed square-bottom bags.

Currently, the most common types on the market are these. As a packaging manufacturer, our primary products are paper‑plastic composite bags, used for packaging snacks, tea, rice, and other food items, offering excellent waterproof, moisture‑proof, and airtight performance.