Two designs of fruit protection bags (Knife handle and Flat-mouth) and their application in fruits

People's requirements for fruits have shifted to high quality and pollution-free (the so-called green fruit).

The price of pollution-free fruit in themarket is significantly higher than that of ordinary fruit, and the key to producing pollution-free fruit lies in whether the fruit bagging technology is applied.

If you are engaged in fruit cultivation or fruit packaging industry, then a suitable mango protection paper bag machine is an indispensable tool.

The special paper bags produced by these machines can protect fruits from pests and diseases and bad weather, thereby improving the quality and market value of fruits.

In this article, we will explore two common mango bag designs - knife handle bags and flat-mouth bags - introduce these two designs, their efficiencydifferences, cost impact, and why the knife handle bag design is generally more suitable for commercial mango cultivation.

Design 1: 

Knife handle fruit bag (wire seal)

Structural features:

- Bag opening protrudes from the knife handle design

- Wire built into the knife handle

- No extra wire in the bag body

Bag advantages

✔ 30-50% faster bagging - Workers can quickly rotate and fix the wire.

✔ Reusable - Some fruit farmers carefully remove the bag and reuse it.

✔ Larger effective bagging size - Metal wire embedded in the handle to make full use of the bag.

✔ Excellent wind resistance - The handle wire is tightly sealed to prevent loosening.

✔ Reduce fruit damage - The bag is not easy to tear when the fruit expands.

✔ Better insect resistance - Forms a complete seal to prevent insects from entering.

Best use

- Large commercial farms.

- Areas with strong winds (e.g. coastal areas)

- High-quality export fruits (requiring additional protection)

Applicable fruits:

Mango (medium and large varieties): such as Kate mango, Golden mango, etc.

Grapefruit: Larger fruits that require a secure seal.

Guava: Fruits with high insect protection requirements.

Papaya: Fruits with large volume changes during growth.

Apple/Pear (high-end market)**: Temperate fruits that require delicate protection.

Advantage analysis:

- Sealing efficiency increased by 40-60%.

- Effective use size is 15-20% larger than flat bags.

- Bag breakage rate is less than 2%.

- Especially suitable for production areas with high labor costs.

How the machine makes knife handle wire bags:

1. Paper feeding - the machine rolls up waterproof paper or wax paper.

2. Threading - thin wire is automatically threaded along the bag handle.

3. Folding seal → seam reinforcement for durability.

4. Counting and bundling - bags can be stacked for easy packaging.

Best-selling regions: India, Mexico, Philippines (typhoon-prone areas)

---

Design 2: 

Flat-mouth fruit bag (with wire below the bag mouth)

Structural features:

- Straight bag mouth design

- Wire located 1-2cm below the bag mouth

- Simpler structure

Bag advantages

✔ Lower material cost (lower unit cost)

✔ Easier to put in fruit for the first time.

✖ Smaller effective size - Wire position reduces available space after bag is sealed.

✖ Higher risk of tearing - Fruit expansion compresses bag position.

✖ Slower to use - Wire position needs to be carefully positioned.

Best use

- Small farms and organic growers.

- Regions with strict ecological regulations (EU, Japan)

- Adequate labor (workers tie bags manually)

Applicable fruits:

Lychee/Longan: Small tropical fruits.

Citrus (small and medium fruit): Such as sugar oranges, navel oranges.

Peach/Nectarine: Fruits with a short growth cycle.

Kiwi: Varieties that require good ventilation.

Cherries: Protection for ultra-small fruits.

Advantage analysis:

- Single bag cost is 5-8% lower.

- Suitable for orchards with a high degree of mechanization.

- High technical requirements for workers.

- Good performance in low wind speed areas.

How the machine makes flat-mouth fruit bags:

1. Roll paper - Load standard or biodegradable paper.

2. Fold and glue - Make simple opening patterns.

3. Custom size - Adjustable to different fruit sizes.

4. Counting and bundling - Bags are stacked and output for easy packaging.

Best-selling areas: Thailand, Australia (organic market)

---

Conclusion

Whether you need a Knife handle or flat-mouth fruit bag, the mango protection paper bag machine can produce it efficiently.

Choosing the right paper bag design according to the fruit type can maximize the protection of your fruit, 

improve market competitiveness and increase profits.

---  

Call to Action:  

Looking for a custom fruit bag machine solution? [Contact us]Get expert advice on which 

fruit protection packaging technology is best for your needs!