Eco-Friendly Custom Printed Packaging Square Bottom Courier Bag Stand-Up Paper Mailers

Product Specifications of the Paper Mailers

Product Name: Square Bottom Courier Bag Paper Mailers
Material Options: White Kraft Paper / Brown Kraft Paper
Width Range: 170-540mm
Recommended Grammage: 150-250g/m²
Side Grip Range: 60-250mm
Printing Options: 3-7 colors (double-sided)
Tube Length Range: 210-640mm
Outer Printing: Customizable
Sealing Options: Glueless/Single Glue/Double Glue/Easy-Tear Line (4-in-1)

Why Choose Our Eco-Friendly Courier Bags Paper Mailers?

With China entering the era of “100 billion parcels” annually, the environmental impact of packaging waste has become critical. Since June 1, 2025, revised national courier regulations mandate greener packaging solutions, promoting biodegradable and reusable materials.
As an industry leader in sustainable packaging, we proudly present our Square Bottom Courier Bag – an innovative solution that combines environmental responsibility with superior functionality.

Key Features & Advantages

✔ Stand-up Design – Spacious interior for easy loading and secure sealing
✔ Four Sealing Options – Glueless/single glue/double glue/easy-tear line configurations
✔ Integrated Adhesive Strip – Strong bonding for secure package protection
✔ Easy-Tear Opening – Red tear strip for tool-free, convenient opening
✔ Waterproof Coating – Enhanced protection against moisture
✔ Full Customization – Available in various sizes and printing options

Rigorous Quality Testing

1. Load Capacity Tests
Static Load: 5kg sandbag for 4 hours – no damage
Dynamic Test: 3,900 lift cycles – no failure

2. Temperature Resistance
-20°C for 2 hours – Seals remain intact
70°C for 2 hours – No adhesive failure or fiber damage

Applications

E-commerce shipping
Local deliveries
Community group purchases
Retail & supermarkets
Pharmaceutical products
Food delivery
Privacy-sensitive items

Customization Process

1）Consultation – Contact our specialists
2）Quotation – Receive competitive pricing
3）Design Service – Free custom design
4）Solution Finalization – Confirm specifications
5）Order Placement – Secure transaction
6）Production – Precision manufacturing
7）Quality Inspection – Rigorous testing
8）Delivery – Worldwide shipping

Our Manufacturing Strength

Annual Production Capacity:
2.7 billion eco-friendly paper bags
9.5 billion food packaging units
2 billion non-woven bags
200 million m² labels & receipts

Certifications & Recognition

ISO 9001, 14001, 22000, 45001 certified
BRC-IOP & FSC-COC certified

Global Presence

13 subsidiaries worldwide serving 200+ countries across:
Asia-Pacific
North America
Europe
Japan

FAQ

1. What temperature range can the adhesive withstand?
A: Our sealant passes -20°C to 70°C tests (suitable for European winters/summers).

2. Can you add a die-cut window to display contents?
A: Yes! Custom window shapes & positions available.

3. How many hot-melt glue lines can be added?
A: Options: No glue / Single glue / Double glue + tear strip (paper or plastic).

4. Can the tear strip be paper or plastic?
A: Both options available.

5. How can we reduce costs?
A: We optimize paper weight, size & material for cost efficiency.

6. How is weight testing done for handle-free bags?
A: We attach a temporary handle for static/dynamic load tests.

7. What’s the weight capacity for different bag styles?
A: Share your requirements—we’ll recommend the best paper strength.

8. Do you provide instructional videos?
A: Yes! Contact us for demo videos.