1. Three-side sealed bags

Structural features: heat-sealed on both sides and bottom, open at the top, flat shape.

Core advantages: low cost, high production efficiency, easy stacking and transportation.

Applicable products: solid food (such as cookies, nuts, candies), lightweight packaging.

Cautions: Weak sealing, not suitable for high-fat or easily oxidized food.

2. Four-side sealing bag

Structural features: heat-sealed on all four sides, three-dimensional, open at the top.

Core advantages: good compression resistance, large printing area, suitable for brand promotion.

Applicable products: High-end snacks, gift packages (e.g. coffee beans, groceries), products that need to be opened and closed several times (e.g. nut bags with zipper).

3. Standing Pouch (Vertical Pouch)

Structural features: Stand-alone bottom, often with zipper or nozzle.

Core Advantage: Outstanding shelf display, easy to access multiple times, leak-proof.

Applicable products:

Liquid/semi-fluid: sauces, jellies, beverages;

Food products that need to be displayed upright: pet wet food, instant coffee.

4. Eight side seal bag

Structural features: four bottom seals + four side seals, square and three-dimensional, five-sided printing.

Core advantages: strong impact resistance, high-end texture, high shelf appeal.

Applicable products: chocolate, health products, high-end gift boxes (such as three squirrels and other brands commonly used).

5. Suction nozzle bag

Structural features: Suction nozzle is designed on the top of the bag body, partially matched with self-standing bottom.

Core advantages: easy to pour liquid/powder, portable, suitable for quantitative use.

Applicable products: liquid drinks (such as juice), powder (such as milk powder), seasonings.

6. Shaped bag

Structural features: non-standard customized shapes (e.g. animal shape, trapezoid, hexagon).

Core advantage: differentiated design eye-catching, strengthen the brand memory point.

Applicable products: children's snacks, holiday limited models, net red explosive products (such as cartoon shaped candy bags).