Self-Seal

Envelope Paper Bag

Our envelope paper bags feature a self-seal adhesive closure for quick and secure packaging. Made from 60-120gsm kraft or white paper, these lightweight mailing bags are the cost-effective solution for shipping letters, documents, small merchandise, and lightweight products. Flat-packed for efficient storage and shipping.

Cost-effective mailing solution — up to 70% cheaper than boxes for small items.

$0.05 - $3.00 / pc

FOB China Port · Price varies by size, material & quantity

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Material60-120gsm Kraft / White Paper
ClosureSelf-Seal Adhesive
MOQ500 - 1,000 pieces
Lead TimeStandard: 10-15 business days | Rush: 7-10 days (+15-20% surcharge)
ShippingSea 20-35 days / Air 5-7 days / Express 3-5 days / Railway 15-25 days
Payment30% deposit, 70% before shipment (T/T, PayPal, L/C)
PortsAny Port in China Available

Supply Chain Certification Support

Quality Assured
FSC materials available upon request
100% Recyclable

Technical Specifications

Feature

Self-Seal Adhesive Closure

Options

Kraft / White / Color

Material

60-120gsm Kraft / White Paper

Durability

Lightweight, up to 2kg capacity

Printing

CMYK, Pantone, Screen

Finishing

Gloss/Matte Lamination, Spot UV

MOQ

500 - 1,000 pieces

Lead Time

10-15 business days

Packaging

Flat-packed, 500-1000pcs/bag

Kraft Paper

60-120gsm natural brown kraft. Durable, eco-friendly, and cost-effective. Perfect for e-commerce and documents.

White Paper

80-120gsm white paper. Clean, professional appearance ideal for retail, corporate, and luxury packaging.

Colored Paper

Custom colors available. Ideal for brand differentiation and seasonal promotions.

Water-Resistant

Water-resistant coating available for moisture protection during shipping.

Standard sizes for common applications. Custom sizes available upon request.

110 x 220mm

DL Envelope — Documents, Letters

162 x 229mm

C5 Envelope — A4 Folded, Photos

229 x 324mm

C4 Envelope — A4 Flat, Catalogs

250 x 350mm

Large — Small Products, Samples

300 x 400mm

XL — Books, Clothing Labels

Custom Size

Tailored to your exact product dimensions

Paper Material Options

Ultra Lightweight

Paper weights from 60-120gsm keep shipping costs low. Perfect for lightweight documents and small items.

Eco-Friendly

Made from recyclable and biodegradable materials. FSC-certified paper available. Reduce your carbon footprint.

Secure Seal

High-tack self-adhesive strip provides tamper-evident closure. Contents stay protected during transit.

Cost Effective

Up to 70% cheaper than boxes for small, lightweight items. Flat-packed for efficient storage and lower freight.

500+ Clients
80+ Countries
10M+ Bags Delivered
24h Response
Quality Assured

Finishing Options

Gloss Lamination

High-shine reflective finish for vibrant colors and moisture resistance.

Matte Lamination

Elegant soft-touch finish with a premium feel and anti-scratch properties.

Spot UV

Highlight your logo or design elements with glossy UV coating contrast.

Foil Stamping

Gold, silver, or custom metallic foil for luxury branding effects.

Production Process

1
Paper Selection

Choose gsm, color & finish

2
Printing

CMYK / Pantone / Screen

3
Die-Cutting

Precision envelope shape

4
Adhesive Strip

Self-seal adhesive applied

5
QC & Pack

Inspection & flat-packed

Why Choose EcoPacki

FeatureEcoPackiOthers
Self-Seal Design Yes (Factory Applied)Often requires manual gluing
Free Plain Samples Yes (shipping applies)Charge for samples
Sample Refund 100% refundableOften not refundable
Response Time 2 hours2-5 business days
Design Consultation Free expert adviceExtra charge or none
MOQ Flexibility From 500 pcsOften 1000+ pcs
Custom Sizes Any size availableLimited standard sizes
Global Shipping 80+ countriesLimited regions

Perfect For

Letters & Mail
Documents
Clothing Labels
Small Gifts
Photos
Books & Catalogs
Jewelry
Eco Brands

Frequently Asked Questions

What materials are available for envelope paper bags?

We offer 60-120gsm kraft paper (natural brown), 80-120gsm white paper, and custom colored papers. Water-resistant coating is available for moisture protection during shipping.

What is the weight capacity of envelope paper bags?

Capacity varies by paper weight and size. Our standard 80gsm envelopes hold up to 500g, while reinforced 120gsm versions can carry up to 2kg. Please specify your product weight for the right recommendation.

How does the self-seal closure work?

The self-seal adhesive strip is factory-applied along the envelope flap. Simply peel off the release liner and press to seal. It provides a tamper-evident, secure closure without the need for moisture or additional tools.

What is the minimum order quantity?

MOQ is 500-1,000 pieces depending on size and material. Sample orders of 10-50 pieces are available for quality inspection before bulk orders.

Can envelope bags be customized with my logo?

Yes! We offer custom printing via CMYK, Pantone, or screen printing. Finishing options include gloss/matte lamination, spot UV, and foil stamping for premium branding.

Are these envelopes eco-friendly?

Yes! Our kraft and white paper envelopes are 100% recyclable and biodegradable. FSC-certified paper is available upon request. We use water-based inks for eco-conscious printing.

What is the production lead time?

Standard production takes 10-15 working days. Sample production is 3-5 days. Rush orders (7-10 days) are available with 15-20% surcharge.

🎁 New Customer Offer

First-time customers get exclusive benefits:

Sample $20-50

Plain sample + shipping applies

5% Off

First bulk order discount

Free Design

Professional dieline assistance

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