String-Tie Professional PP Envelope
LAEN01AL
String and Washer Envelope, PP Tie-Closure Document Bag, Professional Portfolio Envelope
The String-Tie Professional PP Envelope is a premium solution designed for secure document organization and high-end presentation. The classic string-and-washer (string-and-button) mechanism ensures that contents remain firmly in place, providing a reliable seal that prevents documents from slipping out during transport. Manufactured from high-impact polypropylene, this envelope offers excellent water resistance and structural stability, making it a preferred choice for corporate offices, law firms, and academic institutions.
â—Ź Versatile Orientations & Privacy Options
To accommodate diverse filing habits, we offer this series in both horizontal and vertical (top-loading) formats. Users can choose high-clarity transparent PP for quick content identification or opaque professional colors to safeguard confidential reports and sensitive data. Its lightweight yet durable construction provides a protective shield for A4 documents, certificates, and stationery, transforming bulk paper piles into a sleek, portable portfolio.
â—Ź ISO-Certified OEM / ODM Excellence
With over 40 years of expertise and a team of 300+ professionals, YES (Dura & Fancy) specializes in scalable OEM and ODM services. Our facilities operate under ISO 9001/14001 certifications, ensuring that every batch meets rigorous AQL-based quality inspections. We support extensive customization, including bespoke sizes, unique surface textures, and advanced branding techniques such as silk-screen printing, offset printing, and hot stamping, helping global distributors build a cohesive and professional stationery line.
Vertical PP Envelope with Dual-Pocket Design
The Vertical PP Envelope with Dual-Pocket Design is engineered for users who require structured categorization and rapid access. This model consists of a secure string-and-button main compartment paired with an additional full-sized front pocket.
This two-compartment construction allows for the smart separation of materials—for example, storing primary contracts in the secured main section while keeping frequently accessed pamphlets or business cards in the outer pocket for instant retrieval. The top-loading vertical design ensures smooth insertion and retrieval within briefcases or backpacks. Made from recyclable PP, this version is an ideal choice for training materials, seminars, and professional project distribution where keeping different document types clearly separated is essential.
Key Features:
• String-and-Washer Closure: Provides a secure, classic, and reusable seal.
• Dual-Pocket Efficiency: Categorize documents easily within a single folder.
• Professional Branding: Supports custom printing to enhance corporate identity at events or meetings.
Specification
- Size: 312 Ă— 226 mm (A4 Compatible)
- Structure: Single or Double Pocket options; String-and-Button closure.
- Material: 100% Recyclable, Heavy-Duty Polypropylene (PP).
- Orientation: Available in Vertical (Top-loading) and Horizontal formats.
Packing
- 60PCS/Inner Box.
- 240PCS/Outer Carton.
- Approx. 1.38 CUFT.
- MOQ: Flexible based on printing and customization requirements.
- Pro-tip for Event & Seminar Organizers: The classic string-tie closure provides an eco-friendly, reusable alternative to single-use adhesive envelopes. Recommending this model for university welcome kits or corporate trade show packages increases brand retention, as attendees consistently reuse durable PP envelopes long after the event ends.
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How can we implement eco-friendly document organization solutions that strengthen corporate brand identity across our entire office operations?
YES's String-Tie Professional PP Envelope delivers ISO 14001 certified sustainability combined with extensive customization options—enabling your procurement team to create branded, reusable document solutions that reflect corporate values while reducing environmental impact. Our flexible OEM/ODM services support custom sizing, silk-screen printing, and hot stamping, transforming standard filing into a strategic branding tool that clients and employees will reuse for years.
Backed by YES's over 40 years of manufacturing expertise and ISO 9001/14001 certifications, this product exemplifies scalable OEM and ODM excellence with rigorous AQL-based quality inspections. The envelope supports extensive customization including bespoke sizes, unique surface textures, and advanced branding techniques such as silk-screen printing, offset printing, and hot stamping—enabling global distributors and corporate buyers to build cohesive, professional stationery lines. With flexible MOQ based on printing and customization requirements, the String-Tie Professional PP Envelope is an eco-friendly alternative to single-use adhesive envelopes, making it ideal for university welcome kits, corporate trade show packages, training materials, and professional project distribution where document security and brand retention are paramount.






