Mailing and Shipping Bags: Tamper-Proof Polyethylene Mailers for E-Commerce and Logistics
The explosive growth of online retail has made mailing and shipping bags one of the fastest-expanding segments in flexible packaging. Every parcel that leaves a fulfilment centre, marketplace seller’s workshop, or brand’s direct-to-consumer warehouse needs a poly mailer that protects its contents from moisture, dirt, and handling damage while projecting a professional brand image the moment it arrives on the customer’s doorstep. These bags must survive sorting conveyors, stacking in delivery vans, rain-soaked porches, and the final drop through the letterbox—all without tearing, puncturing, or allowing the contents to shift and sustain damage.
Aydoğan Plastik manufactures polyethylene-based courier mailing bag products engineered for the rigours of modern parcel logistics. Our film extrusion lines produce multi-layer films with the puncture resistance, moisture barrier, and opacity that e-commerce shipping pouch applications demand, while our cutting and sealing capabilities deliver the tamper-evident closures and easy-return features that define contemporary parcel packaging bag design.
Applications Across Shipping and Fulfilment
E-Commerce Direct-to-Consumer
Fashion, beauty, electronics accessories, books, and homeware brands shipping directly to consumers represent the primary market for PE mailing bags. The plastic mailing envelope format—lightweight, flexible, and space-efficient—reduces dimensional weight charges compared to rigid boxes, delivering significant per-parcel shipping cost savings at scale. Our mailers in 50–80 micron thickness accommodate single-garment fashion shipments, multi-item beauty orders, and padded electronics accessories with equal reliability.
For direct-to-consumer brands, the shipping bag is the first physical brand experience the customer encounters. Printed mailers with brand logos, unboxing messages, social media handles, and returns instructions transform a functional logistics item into a brand-building touchpoint. Our up to 8-colour flexo printing delivers the visual impact these branding opportunities demand.
Marketplace and Third-Party Logistics
Marketplace sellers on platforms like Amazon, Trendyol, and Hepsiburada, along with third-party logistics (3PL) providers, consume mailing bags in enormous volumes with strict cost-per-unit targets. Plain unprinted bags in standard sizes serve the volume end of this market, while branded co-packing solutions—where the 3PL ships in the brand owner’s custom-printed mailer—represent a growing premium segment. Our production flexibility handles both high-volume commodity runs and shorter branded campaigns within a single coordinated schedule.
The marketplace logistics ecosystem places unique demands on mailing bag performance: bags must survive automated sortation conveyors where they are pushed, squeezed, and dropped between transfer points; they must accept barcode labels that remain scannable through rain, abrasion, and UV exposure during last-mile delivery; and they must protect contents ranging from a single phone case to a stack of folded textiles without requiring different bag types for each product category. Our multi-layer film structures address all three requirements through optimised puncture resistance, smooth label-compatible outer surfaces, and dimensional flexibility that accommodates varied product shapes.
Document and Catalogue Mailing
Legal documents, insurance papers, bank statements, and product catalogues are mailed in PE bags that provide moisture protection and tamper evidence for sensitive printed materials. These document shipping sleeve applications use thinner gauge films (40–60 microns) with strong adhesive closures that signal any opening attempt. Clear or translucent film options allow address labels and barcodes to be read through the bag by automated sorting equipment, eliminating the need for external labelling in some postal workflows.
Textile and Fashion Logistics
Garment returns are a defining challenge of fashion e-commerce, with return rates often exceeding 30 percent. Our mailing bags incorporate a dual-peel adhesive strip: the first strip seals the outbound shipment, while a second strip—concealed beneath a perforation—enables the customer to reseal the bag for a return shipment without needing additional tape or packaging. This return-ready mailer feature reduces return friction, improves the customer experience, and minimises the environmental waste of double-packaging returns.
Fragile and Padded Shipments
Products requiring impact protection—cosmetics in glass bottles, phone cases, jewellery—can be shipped in bubble-lined or foam-padded PE mailing bags that combine cushioning with the external durability of a standard mailer. Our lamination capabilities bond PE outer films to cushioning inner layers, creating integrated padded mailers that eliminate the need for separate void-fill materials inside the bag.
Technical Specifications
Film Thickness and Material
Mailing and shipping bag films range from 40 to 100 microns. Document mailers use 40–55 microns, standard e-commerce bags 55–75 microns, and heavy-duty or padded mailers 75–100 microns. Our co-extrusion lines produce multi-layer structures with an opaque outer layer for content concealment and branding, a core layer for tensile strength and puncture resistance, and an inner layer that provides a smooth product-contact surface and reliable adhesive-strip bonding.
LDPE provides flexibility and soft hand-feel, while LLDPE blends add the puncture and tear resistance essential for bags that encounter conveyor edges, sorting machinery, and rough handling throughout the delivery chain. Inner/outer colour differentiation—white exterior with grey interior, for example—conceals contents while maintaining a clean, professional outer appearance.
Tamper-Evident Closure
The permanent adhesive closure strip is the primary security feature of mailing bags. Once sealed, any attempt to peel the strip destroys the bag’s opening edge, providing clear visual evidence of tampering. Our adhesive strips use high-tack permanent adhesive formulations that bond reliably to the PE film surface across a wide temperature range—from cold warehouse environments in winter to hot delivery vans in summer. Quality control peel-force testing verifies adhesive performance on every production batch.
Dual-Peel Return Strip
The secondary return-seal strip sits below the primary closure, separated by a perforated tear line. After the customer opens the bag along the perforation, the exposed second strip allows them to reseal the bag for a return shipment. This dual-strip system is rapidly becoming a standard expectation in fashion and lifestyle e-commerce where hassle-free returns drive repeat purchase behaviour and customer loyalty.
Document Pocket
An external clear pocket—a small transparent PE pouch adhered to the bag’s outer surface—holds packing slips, customs declarations, and return labels visible to logistics handlers without opening the bag. Our production lines integrate pocket application into the bag-forming process, ensuring consistent pocket placement and reliable adhesion across high-speed production runs.
Printing and Branding
Up to 8-colour flexo printing transforms plain mailers into branded experiences. Our graphic design team provides mockups showing print placement relative to closure strip, perforation line, and document pocket positions. Lamination adds premium finishes for luxury brand mailers.
Production Process
Our integrated facility manages the complete mailing bag workflow: extrusion, printing, slitting, and cutting with adhesive strip application, perforation, and pocket integration. Every batch passes quality control checks for adhesive peel force, seal strength, and tear resistance. Production waste is recycled via our recycling facility. Products ship from warehousing and shipping. Visit about us or contact us for project consultation.
Frequently Asked Questions
What film thickness is used for mailing bags?
40–55 microns for documents, 55–75 microns for standard e-commerce, and 75–100 microns for heavy-duty or padded mailers.
Is a return-seal strip available?
Yes, dual-peel adhesive systems provide a primary seal for outbound shipping and a secondary strip for customer return resealing.
Can document pockets be added?
Yes, clear external pockets for packing slips and customs documents are integrated during the bag-forming process.
Are the bags tamper-evident?
Yes, permanent adhesive closure strips show visible evidence of any opening attempt, securing contents throughout delivery.
Is printing available?
Yes, up to 8-colour flexo with mockups showing closure strip and pocket positions. Lamination available for premium brands.
What is the minimum order quantity?
Varies by bag size, gauge, and features. Plain commodity bags have lower minimums; branded runs require higher volumes. Contact our team for specifics.