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Express Document Envelope
Express Document Envelope
Express Document Envelope
Express Document Envelope
Express Document Envelope
Express Document Envelope
Express Document Envelope
Express Document Envelope

Express Document Envelope

This express document envelope is a purpose-built paper packaging solution designed exclusively for logistics scenarios. Ideal for shipping contracts, invoices, tenders, certificates, drawings and other critical documents, it combines the writing convenience of a paper envelope with the protective strength of a courier bag.

Made of high-strength kraft paper, the bag is tear-resistant, durable and rigid, offering excellent compression and impact resistance. It features a tamper-evident pressure-sensitive adhesive strip that seals securely once pressed after peeling, preventing unauthorized access or tampering. The smooth surface allows direct application and scanning of shipping labels.

Compared to traditional envelopes, it is thicker, more secure and better suited for sorting and long-distance transit. Unlike plastic mailers, its paper construction delivers a professional appearance and meets compliance requirements for invoice and official document shipments.

Our Advantages

Document Protection

Document Protection

High-strength kraft paper resists pressure and drops, keeping documents flat during transit.
Tamper-Evident

Tamper-Evident

Destructive seal leaves permanent marks. Recipients can instantly spot unauthorized opening.
Professional Brand Image

Professional Brand Image

The clean, crisp look of premium paper enhances your brand’s perceived quality and reliability.
Reliable Supply Chain

Reliable Supply Chain

Consistent material quality and high production capacity for large-scale wholesale orders.

Primary Functions

Secure Document Mailing – Ideal for contracts, invoices, bids, and ID documents. The high-strength bag protects documents from bending and contamination during sorting and transit.

Tamper-Proof & Privacy Protection – Destructive pressure-sensitive adhesive seal leaves permanent marks once opened, preventing document tampering or prying.

Courier Label Ready – Smooth bag surface supports direct application of shipping labels and barcode scanning, compatible with major courier systems.

Information Writing – Bag surface allows handwritten sender/recipient info. Select models feature a transparent window to display recipient details.

Business Image Display – Kraft paper bag with custom corporate logo printing conveys a professional and reliable brand image.

Compliant Mailing – Paper envelope meets regulatory requirements for tax invoices, official documents, and government correspondence.

Usage Notes

Store in a cool, dry place away from moisture and direct sunlight to prevent paper from becoming damp or deformed.

This product is designed for documents. Do not load overly thick or heavy items.

Before sealing, ensure all documents are correct. Once sealed, the bag cannot be opened without damage.

After use, dispose of as recyclable waste.

Product Specifications

Material

High-Grade Virgin Cardboard

Color

Standard White / Kraft Brown / Custom Colors

Closure

Peel & Seal Pressure Sensitive Adhesive

Printing

Offset / Silkscreen Printing (Up to Full Color)

Weight

300gsm - 450gsm (Depending on size)

FAQ

Q. Is the cardboard rigid enough to prevent the mailer from bending during international transit? 

Yes. We use high-density virgin paperboard (300gsm-450gsm) that provides industrial-grade stiffness. These mailers are specifically designed to "Stay-Flat," protecting certificates, photos, and legal documents from creasing or folding under normal shipping conditions.

Q. What is the typical lead time for bulk wholesale orders with custom logos?

For standard wholesale orders, we ship within 7-10 days. For custom printed orders, the lead time is typically 15-20 days depending on the quantity and complexity of the design. We also offer expedited options for urgent requirements.

Service Warranty Policy​

Quality Commitment

Quality Commitment

Free replenishment if damage rate exceeds 0.5%
After-Sales Response

After-Sales Response

Quality issues will be addressed within 24 hours.

Environmental Protection Certification

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