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CosunPackPackaging Manufacturer

Products

Poly Mailers

Film, padded, paper, and rigid mailer formats for e-commerce shipping and document protection. Every item is custom-manufactured to your specification—request a quote with your size, material, and printing requirements.

Standard Poly Mailer

Standard Poly Mailer

CS-0123
Bubble Poly Mailer

Bubble Poly Mailer

CS-0124
Padded Poly Mailer

Padded Poly Mailer

CS-0125
Expansion Poly Mailer

Expansion Poly Mailer

CS-0126
Clear Poly Mailer

Clear Poly Mailer

CS-0127
Colored Poly Mailer

Colored Poly Mailer

CS-0128
Custom Printed Poly Mailer

Custom Printed Poly Mailer

CS-0129
Kraft Paper Mailer

Kraft Paper Mailer

CS-0130
Compostable Biodegradable Mailer

Compostable Biodegradable Mailer

CS-0131
Recycled Content Mailer

Recycled Content Mailer

CS-0132
Security Poly Mailer

Security Poly Mailer

CS-0133
Return Ready Poly Mailer

Return Ready Poly Mailer

CS-0134
Document Poly Mailer

Document Poly Mailer

CS-0135
Suffocation Warning Mailer

Suffocation Warning Mailer

CS-0136
Garment Poly Bag

Garment Poly Bag

CS-0137
Honeycomb Paper Mailer

Honeycomb Paper Mailer

CS-0138
Tyvek Mailer

Tyvek Mailer

CS-0139
Rigid Stay Flat Mailer

Rigid Stay Flat Mailer

CS-0140
Book Wrap Media Mailer

Book Wrap Media Mailer

CS-0141

Explore Other Categories

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Category FAQ

Poly Mailers — FAQ

What B2B buyers most often ask before specifying poly mailers — answered from industry references.

Standard, bubble, or expansion mailer?
Standard 60–80 µm co-ex film suits soft goods; bubble-lined adds cushioning for fragile-adjacent items; expansion gussets handle bulky knits and multiple-piece orders. Match construction to your catalog mix.

Technical references: Sealed Air / Pregis protective packaging resources

What eco mailer options exist?
Recycled-content mailers with documented PCR %, paper mailers, compostable film certified to EN 13432/BPI, and honeycomb paper wrap as a plastic-free cushioning alternative. Certificates are supplied per program.

Technical references: BPI Compostable Certification Requirements

Can mailers support returns?
Dual-strip return-ready mailers carry a second protected adhesive strip — the customer reseals the same mailer for the return trip. Validate the second seal after the outbound opening cycle, not fresh from the box.

Technical references: ISTA: Getting Started with Design of Transport Packaging

How much print coverage can mailers take?
From a one-color logo to full-bleed CMYK inside-and-out artwork; matte outer films photograph well for social unboxing. Print repeat length is engineered to mailer size.
What about compliance prints and warnings?
Suffocation warnings for US retail-packaged poly bags (CPSC/16 CFR) and carrier requirement marks are printed during conversion rather than labeled after — cheaper and permanent.
How do mailers perform in transit testing?
Seam strength, seal peel, and drop performance on packed samples are checked against your courier profile — soft-goods parcel profiles differ from mixed catalogs. Tyvek alternatives cover tear-critical routes.

Technical references: ISTA: Getting Started with Design of Transport Packaging · DuPont Tyvek Envelopes FAQ

One Partner for Your Complete Packaging

Source packaging from China with one team, from product-led development to delivery. Share your product or idea, component list, quantity, and destination—we will help define the next steps.

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