Product Video
Custom Envelope Bag - Paper Bag with Adhesive Seal
Custom Envelope Bag — Adhesive Seal & Foldable Paper Bag Our Custom Envelope Bags feature a secure adhesive seal closure and convenient fold-flat design. Made from 300-500gsm grey chipboard or corrugated material, these flat-packed bags reduce freight costs significantly. Perfect for documents, cards, invitations, and small retail items. Custom logo printing available. Why Brands Choose Envelope Bags: ✓ Adhesive Seal Closure — Secure and easy to open/reseal ✓ Fold-Flat Design — Flat-packed to save storage and shipping costs ✓ Multiple Materials — Grey chipboard or corrugated options available ✓ Versatile Applications — Documents, cards, invitations, small retail items ✓ Custom Logo Printing — Brand your envelope bags with offset/flexo printing Ideal for document storage, greeting cards, invitations, retail packaging, and e-commerce shipping of flat items.
Versatile envelope bag design offers flat-packed shipping with adhesive seal closure, perfect for documents and small items.
Customized Pricing
FOB China Port ? Price varies by size, material & quantity
Get your quote in 24 hours + Free design consultation
Supply Chain Certification Support
Technical Specifications
Material
Grey Chipboard / Corrugated 300-500gsm
Structure
Foldable / Collapsible Display
MOQ
Flexible MOQ
Shipping
Flat-packed for lower freight costs
Printing
CMYK, Pantone, Screen (200 LPI)
Finishing
Lamination, Foil, Spot UV
Lead Time
12-18 business days
Price Range
Customized per specification
Gloss Lamination
High-shine reflective finish for vibrant colors and premium look.
Matte Lamination
Soft-touch elegant finish with anti-scratch properties.
Foil Stamping
Gold, silver, or metallic foil for luxury branding effects.
Embossing
Raised patterns for tactile premium feel and brand texture.
Spot UV
Highlight specific areas with glossy UV coating contrast.
Soft-Touch
Velvety texture for ultra-premium unboxing experience.
Quick reference for commonly requested sizes. Custom sizes available upon request.
Customized
Cosmetics, Jewelry, Small Gifts
Customized
Smartphone Cases, Accessories
Customized
Tablets, Books, Clothing
Customized
Electronics, Multiple Items
Customized
Heavy Items, Bulk Products
Customized
Premium Gifts, Large Items
Common Mistakes to Avoid
Wrong Material Weight
Key Consideration: Too thin = collapses under product weight. Too thick = hard to fold.
Tip: Specify 300-500gsm based on product weight and bin height.
Incorrect Fold Score
Key Consideration: Improper scoring causes cracking or uneven folds.
Tip: Request test folds before bulk production.
No Reinforced Base
Key Consideration: fold-flat boxes have weight limits when assembled.
Tip: Specify product weight for reinforced corner option.
Storage in Humid Conditions
Key Consideration: Flat storage in damp conditions may affect adhesive.
Tip: Store in dry environment, consider moisture-resistant coating.
Pricing
Packaging Collections
Material Selection Guide
Choose the right materials for your packaging needs
📦Base Board (9 Options)
| Category | Available Materials |
|---|---|
| Paperboard | Corrugated Board / Greyboard / White Board / Black Board / Kraft Board / White-lined Chipboard / White-top Chipboard / Honeycomb Board / MDF Board |
🎨Surface Paper (15 Options)
| Category | Available Materials |
|---|---|
| Paper | Coated Paper / Offset Paper / Kraft Paper / Metallic Paper (Gold/Silver) / Pearl Paper / Touch Paper / Leatherette Paper / Art Paper / Cotton Rag Paper / Recycled Paper / Aluminum Foil Paper / Tracing Paper / Copy Paper / Glassine Paper / Holographic Paper |
🧵Surface Material (15 Options)
| Category | Available Materials |
|---|---|
| Fabric & Leather | Flannel / Leather / PU Leather / Genuine Leather / Vegan Leather / Linen / Canvas / Cotton Cloth / Silk / Non-woven Fabric / Oxford Cloth / Nylon / Polyester / Suede |
🛡️Interior Lining & Cushioning (25 Options)
| Category | Available Materials |
|---|---|
| Foam & Plastic | EVA Foam / Sponge / Pearl Cotton (EPE) / EPS Foam / XPS Foam / PU Foam / Molded Pulp / Blister Packaging (PVC / PET) / Plastic Tray |
| Paper-based | Greyboard Insert / Cardstock Insert / Folded Paper Insert / Corrugated Divider / Corrugated Roll / Honeycomb Board Insert |
| Fabric | Velvet Lining / Flannel Lining / Non-woven Bag |
| Bags & Fillers | OPP Bag / PE Bag / Cotton Bag / Linen Bag / Air Bubble Film / Air Column / Inflatable Bag / Paper Crinkle Fill |
💡 Need help customizing?
Need help customizing the material combinations for your specific product? Just share your product type and use case — I'll recommend the best pairing.
Finishing Options
Production Process
Factory Production Video
Shipping & Packaging
200 units per carton. Reinforced packaging ensures safe international delivery.
Supply Chain Capabilities
Daily Capacity
50,000+ pieces per day. Scale production to meet your demands.
Clients Served
500+ B2B clients worldwide. Trusted by global brands.
Global Export
Exported to 80+ countries. Reliable international shipping.
24/7 Support
2-hour response guaranteed. Dedicated account manager.
Why Choose EcoPacki
See how EcoPacki stands out from other packaging suppliers.
| Feature | EcoPacki | Others |
|---|---|---|
| fold-flat Design | Yes (Space Saving) | Fixed shape only |
| Free Plain Samples | Yes (shipping applies) | Charge for samples |
| Sample Refund | 100% refundable | Often not refundable |
| Response Time | 24 hours | 2-5 business days |
| Design Consultation | Free expert advice | Extra charge or none |
| Quality Assurance | Quality Assured | Varies significantly |
| MOQ Flexibility | From 200+ pcs | Often 1000+ pcs |
| Global Shipping | 80+ countries | Limited regions |
Perfect For
Frequently Asked Questions
What is your return/exchange policy?
Quality inspection is conducted upon receipt. Claims must be submitted within 7 days of receiving goods. Defective products are eligible for free replacements. Please provide photos and order details when filing a claim.
What materials are used for envelope bags?
Envelope bags are made from grey chipboard or corrugated board 300-500gsm with various finishing options. The foldable design with adhesive seal provides secure closure. Perfect for documents, cards, and lightweight products.
What is the weight capacity of envelope bags?
Envelope bags are designed for lightweight products like documents, cards, and small items. For heavier items, specify reinforced base or double-wall construction.
How does the envelope bag assembly work?
Envelope bags come flat-packed and fold easily. Simply fold and peel the adhesive seal to close. No glue or tape required. Efficient for high-volume packaging.
What are the advantages of envelope bag design?
Envelope bags offer flat shipping with foldable design for lower freight costs. The adhesive seal provides quick secure closure. Perfect for documents and small items.
What printing and finishing options are available?
We offer offset printing, flexographic printing, embossing/debossing, foil stamping (gold/silver), spot UV, and soft-touch lamination for premium appearance.
What is the minimum order quantity?
MOQ is Flexible for standard sizes. Sample orders are available for quality verification.
Can envelope bags be customized with logos?
Yes, we offer custom logo printing via offset or flexographic printing. Embossing, debossing, and foil stamping are available for premium branding effects.
What industries use envelope bags?
Envelope bags are popular for documents, cards, invitations, small retail items, e-commerce shipping, and any product requiring flat-packed paper packaging.
Are envelope bags eco-friendly?
Yes, we use recyclable cardstocks and water-based inks. FSC-compliant materials are available upon request. Biodegradable foam alternatives are available.
What is the production lead time?
Standard production takes 15-20 working days. Sample production is 5-7 days. Rush orders (8-10 days) are available with 20% surcharge.
🎁 New Customer Offer
First-time customers get exclusive benefits:
Sample Available
Contact for details
Bulk Discount
Special pricing for first order
Free Dieline
+ Design artwork suggestions
Quality Control Process
Every order goes through our rigorous 5-step quality inspection
Raw Material Test
Paper weight, thickness, burst strength
Printing Check
Color accuracy, registration, coverage
Die-Cut Inspection
Dimensions, clean cuts, proper scoring
Assembly Test
Easy fold, secure closure, structural integrity
Final Packaging
Bundle count, carton protection, labeling
From inquiry to delivery — your complete ordering timeline
→ Quote within 24h
& dieline approval
sample (3-5 days)
15-20 working days
Balance & ship
Total timeline: ~4-7 weeks (sea freight) | ~3-4 weeks (air freight)