Market Pain Points
1.Bags tear easily
Ordinary films have poor transverse impact resistance. Frequent ripping during sorting or by end customers leads to higher return and replacement costs, as well as brand reputation damage.
2.Custom MOQs are too high
Most factories require 100,000 or even 200,000 pieces for custom printing. New product trials, seasonal campaigns, and smaller brands simply cannot bear the inventory and cash flow pressure.
3.Unreliable lead times
A promised 15 days often turns into 30 days or more – and shipments may still be incomplete. Bag shortages during peak seasons and excess
Why Wholesale Buyers Choose Our Polythene Courier Bags
The root cause of these issues is not that "courier bags are too simple," but that most factories lack material R&D depth and flexible manufacturing capabilities. We rely on end‑to‑end smart manufacturing – from film formulation R&D, co‑extrusion blow molding, high‑speed printing, to bag making and AI‑driven inspection – all under our control.
Against tearing
Our film lab has developed a "cross‑reinforced" PE composite structure. Impact strength in both machine and transverse directions is 2.3 times that of ordinary bags (ASTM D1709 tested). Impact retention at -20°C is ≥92%.
Against high MOQs
Through order consolidation and pre‑coated film inventory in standard colors, custom printed bags are available from as few as 5,000 pieces (up to 5 colors). Variable printing (one bag, one code) is also supported.
Against unreliable lead times
Our MES system tracks every roll of film in real time. Standard orders ship in 7 business days; rush orders in 3 days. Over the past 12 months, our B2B on‑time delivery rate has been 98.7% – and we proactively compensate for delays.
Simply provide your design file or specify dimensions, thickness, and closure type (tear strip, self‑adhesive seal, antistatic, etc.). We handle the rest:
Custom Polythene Courier Bags Made Easy
2‑day sampling
production
quality inspection video
split shipments
Multi‑Dimensional Advantages
Proven performance data
SGS testing confirms: heat seal strength ≥35N/15mm; ASTM D1709 dart drop impact damage rate <0.3%. Suitable for high‑frequency logistics scenarios such as apparel, electronics, and lightweight industrial parts.
Flexible printing & brand empowerment
Gravure cylinder engraving (120 lines/inch fineness) plus digital proofing. Spot color Pantone matching ΔE <1.5. Supports variable QR codes and logistics barcodes – one bag, one code, no additional labeling needed, improving the unboxing experience.
Green compliance options
FDA/LFGB food‑grade raw materials available. Fully biodegradable formulations (ASTM D6400 certified) are in production. Can also incorporate 30% post‑consumer recycled (PCR) content
Delivery guarantee mechanism
All key production procedures are independently completed in our own professional factory, enabling us to fully monitor and strictly control both product quality stability and order delivery lead times in-house.
Find the Right Balance Between Cost and Protection
|
Parameter |
Range / Options |
Application Notes |
|
Thickness |
30–120 microns |
30–50μm: Light-duty – documents, small garments; |
|
60–80μm: General-purpose – daily goods, electronics; |
||
|
90–120μm: Heavy-duty – sharp-edged or heavier items |
||
|
Size |
Width: 10–60 cm; |
Customizable based on product dimensions; non-standard sizes accepted; |
|
Length: 15–80 cm |
Available as perforated roll-film for automatic packaging machines |
|
|
Printing |
No printing |
Supports custom courier label layout, brand logo, warning text, barcode, QR code |
|
monochrome printing |
||
|
color printing |
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|
Bag Style |
Flat bag |
Basic flat bag |
|
Envelope-style with adhesive flap |
Self-seal flap with adhesive strip |
Material Choices That Match Your Packaging Needs
|
Material Type |
Features |
Recommended Applications |
|
LDPE |
High softness, good puncture resistance, strong heat seal |
Items with corners, electronics, garments, multi-piece bundles |
|
HDPE |
Good stiffness, easy opening, crisp feel |
Documents, single garments, scenarios requiring quick opening |
|
Antistatic |
Surface resistance ≤10¹² Ω, prevents dust attraction |
Electronic components, precision instruments, clean-room shipping |
|
Biodegradable |
Meets EN13432 or ASTM D6400 |
Regions with strict environmental regulations, green brand supply chains |
Compare Closure Options Before You Order
|
Closure Type |
Advantages |
Best For |
|
Flat/Plain |
Strong seal, lowest cost, works with heat sealers |
Factory bulk packing, logistics distribution centers |
|
Self-seal (zipper) |
Reusable, no sealing equipment needed |
E-commerce retail, consumer returns and exchanges |
|
Hot-melt adhesive strip |
Peel-and-seal, no equipment needed, high packing efficiency |
Courier stations, warehouse shipping, cross-border small parcels |
|
Laser tear notch |
Easy open without damaging the bag, clean edge |
Premium unboxing experience, retail mail orders |
Customization Services
Size Customization
Non‑standard sizes accepted; MOQ based on specifications.
Perforated roll‑film available for automatic packaging machines
Printing Customization
Courier label printing: recipient info, barcode, QR code, tracking number area.
Brand printing: logo, brand colors, tagline.
Printing methods: gravure (vibrant colors), flexographic (cost‑effective for large volumes)
Production Of New Raw Materials
Made from brand new PE polyethylene raw materials.
With excellent performance and suitable for food processing.
Application Scenarios (Delete any that do not apply)
E-commerce platform shipping
Courier station packing
Warehouse logistics distribution
Cross-border small parcel export
Export & Logistics Information
1. Packaging method
Inner PE moisture barrier bag + outer woven bag or kraft carton; edge protectors available.
2. Container loading estimates:
20‑ft container: approx. 800–1,500 cartons (depends on bag thickness and size).
40‑ft HC container: approx. 1,800–3,000 cartons.
3. Supporting documents
Commercial invoice, packing list, material certificate, REACH/RoHS/FDA compliance declarations, MSDS.
4. Export experience
Products already exported to North America, Europe, Southeast Asia, and the Middle East, familiar with customs clearance requirements for courier packaging in various countries.
Quality Assurance & After‑Sales Support
Warranty period
12 months from shipment date (when stored away from light, in a cool, dry place)
Factory testing per batch
Thickness variation, dimensional tolerance, seal strength, hot‑melt adhesive strip adhesion, print color difference, tensile strength.
After‑sales terms
Free replacement for quality issues caused by manufacturing defects that render the bags unusable.
FAQ
Q: What is the difference between polythene courier bags and ordinary plastic bags?
A: Courier bags are specifically designed for logistics scenarios. They offer better tear resistance, stronger seals, optional hot‑melt adhesive strips for faster packing, support for printed courier label information, and compatibility with automatic packaging equipment.
Q: What is the MOQ? How can I request samples?
A: Standard (unprinted) MOQ: 10,000 pieces. Custom printed MOQ: 20,000 pieces. Samples: We can supply 100–500 pieces as a small trial order. Alternatively, you can pay a sample making fee for formal samples – the fee is then deducted from your bulk order.
Q: How strong is the hot‑melt adhesive strip? Will it open during transit?
A: The hot‑melt strip uses a high‑strength pressure‑sensitive adhesive. Once the release liner is removed and the flap is pressed down, it stays firmly sealed. Simulated transport testing shows no opening after 200 km of rough road vibration. For high‑temperature environments (above 40°C), additional outer packaging is recommended.
Q: Can you print courier label information directly on the bag?
A: Yes. We can print a designated label area on the bag surface where customers can apply their shipping label. We also support variable data printing (e.g., barcodes, serial numbers) – please discuss the printing method and MOQ in advance.
Q: Are the bags suitable for automatic packaging machines?
A: Yes. We supply perforated roll‑film that works with common automatic packaging machines (e.g., horizontal form‑fill‑seal, vertical form‑fill‑seal). Please provide your machine parameters (bag length, bag width, core inner diameter, maximum roll diameter) for proper matching.
Q: Can courier bags be biodegradable? How long does degradation take?
A: Yes. We offer biodegradable materials compliant with EN13432 or ASTM D6400. Under industrial composting conditions, these bags degrade >90% within 90–180 days. Actual degradation time depends on ambient temperature and humidity.
Q: How do I choose the right thickness for my product?
A: Light items (under 1 kg): 30–50μm
Regular items (1–3 kg): 60–80μm
Sharp‑edged or heavier items (over 3 kg): 90–120μm
We can provide samples for actual testing.
Q: How do you guarantee lead times for large orders?
A: Once an order is confirmed, we lock in the production schedule. Custom orders are typically completed within 15–20 days. Rush orders can be expedited to 7–10 days. Split shipments are supported to reduce your inventory pressure.
Q: What are the advantages of bubble‑lined composite bags?
A: Bubble‑lined composite bags combine bubble cushioning with an outer polyethylene layer – offering both impact protection and moisture/dust resistance. They eliminate the need for separate bubble bags and outer bags, improve packing efficiency, and lower overall packaging costs.
Q: Do you support mixed‑batch ordering?
A: Yes. We support mixed sizes within the same material, thickness, and printing process. The MOQ is calculated based on the total quantity – convenient for customers needing multiple specifications.
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