| Type | Specification |
|---|---|
| Material | Low-Density Polyethylene (LDPE) or Co-Extruded Film |
| Outer Finish | Blank Matte or Semi-Gloss Surface – No Printed Elements |
| Available Colors | Solid White, Grey, Black, Kraft Brown, Transparent (Optional) |
| Thickness Range | Standard 2.0 Mil to Heavy-Duty 4.5 Mil – Custom Thickness Available |
| Seal Type | Permanent Self-Adhesive Strip with Tamper-Proof Closure |
| Interior Layer | Opaque Inner Film for Privacy – Optional Dual-Tone Co-Ex |
| Common Sizes | 6×9″, 9×12″, 10×13″, 12×15.5″, 14.5×19″, 19×24″ – Fully Custom Sizes Supported |
| Logo or Branding | Not Printed – But Custom Print Upgrade Available on Request |
| Puncture Resistance | High Tear-Strength for Apparel, Documents, and Soft Goods |
| Moisture Protection | 100% Waterproof Exterior – Sealed Against Humidity and Spills |
| Weight Capacity | Lightweight Items up to 10kg Depending on Mil Strength |
| Bottom Type | Flat Seam or Fold-Over Bottom Seal for Leak-Free Packing |
| Packaging Format | Bulk Stacked in Master Cartons or Bundled Packs (100–1,000 units) |
| Perforation Option | Optional Tear Line for Easy Opening – Add-On Available |
| Custom Size Availability | Yes – Fully Scalable by Width and Length to Fit Product Type |
| Recyclability | LDPE #4 – Fully Recyclable in Polyethylene Waste Streams |
| Quantity Range | 500 Units to 500,000+ Units – Bulk Pricing for High Volumes |
| Certifications | ISO 9001:2015, RoHS, FSC Packaging-Chain Compatible |
| Use Cases | E-commerce Shipping, Subscription Orders, Soft Goods, Retail Apparel |
| Sample Access | Unbranded Blank Samples Available for Fit Testing |
Blank Poly Mailers
Blank Poly Mailers are the perfect choice for brands that want clean, unbranded packaging without compromising on protection. Made from tough, lightweight poly film, they’re ideal for shipping clothing, documents, or soft goods with minimal fuss. The smooth, plain surface works well for applying branded stickers — or we can print your design directly on the bags in bulk. Each mailer includes a peel-and-seal adhesive strip to keep contents secure in transit, without needing extra tape. These are popular with fulfilment teams that prefer neutral packaging but still want the option to brand fast.
At The Product Boxes UK, we don’t just supply. We manufacture every order to your bespoke size and quantity. Whether you’re sending out daily orders or preparing for a major sale, these blank poly bags offer a simple, reliable, and cost-effective solution. Need help with sizing or printing? Our team is always available to support.
Q. What materials are blank poly mailers typically made from?
A. Most blank poly mailers are made of low-density polyethylene (LDPE), which offers tear resistance, water protection, and a smooth surface. Co-extruded versions feature multiple layers for added durability during shipping.
Q. Are plain poly mailers suitable for eCommerce order fulfillment?
A. Yes, these mailers are widely used for shipping apparel, accessories, and soft goods. Their lightweight nature helps reduce postage costs while offering tamper-resistant, secure packaging for online orders.
Q. Can blank mailing bags be used with thermal shipping labels?
A. Absolutely. Blank poly mailers have non-coated, writable or label-friendly surfaces, making them compatible with adhesive shipping labels and thermal printers without smudging or peeling.
Q. Do blank poly mailers come with a self-sealing adhesive?
A. Yes, most blank mailers feature a peel-and-seal adhesive strip that provides a strong, tamper-evident closure. Some also include dual strips for return handling or resealable use.
Q. What are the most common sizes for blank shipping mailers?
A. Common sizes include 6×9″, 10×13″, 12×15.5″, and 14.5×19″. These dimensions cover a wide range of shipping needs from small accessories to bulky apparel orders.
Q. Are blank poly mailers available in colors other than white?
A. Yes, although “blank” often refers to unprinted, these mailers are available in solid colors such as gray, black, pink, or clear. Color options vary by supplier and order quantity.
Q. Can these unbranded mailers be customized later with stickers or stamps?
A. Definitely. Blank mailers offer a clean canvas for DIY branding with stickers, rubber stamps, or printed labels — ideal for small businesses seeking cost-effective custom packaging.
Q. Are poly mailers weatherproof or moisture resistant?
A. Yes, poly mailers are naturally water-resistant and protect contents from rain, dirt, and handling during transit. They’re a reliable choice for shipping soft or non-fragile items.
Q. Is it possible to recycle blank poly mailers after use?
A. Many blank poly mailers are recyclable under code #4 LDPE, though local recycling rules apply. Some brands also offer eco-friendly versions made with post-consumer content.
Q. Do blank mailers provide sufficient privacy for the contents?
A. Yes, standard poly mailers are opaque and thick enough to conceal items inside. This ensures customer privacy, especially when used for mailing clothing or sensitive goods.
Related Products
Corrugated
A fluted box material is created to enhance the strength of the boxes for shipment purposes.
Cardboard
Light in weight and easy to print cardstock material that would be molded into any shape and style.
Kraft
Slightly brown paper-like thin material for packaging created by wood pulp and heaving eco-friendly nature.
Rigid
A thick cardboard box that is high in strength but also luxurious in presentation.
Holographic
An impressive as well as laminated paperboard that emulates a 3d look to colors.
Offset Print
High-quality and low-cost printing option that transfers the image to the box surface in a good resolution.
Digital Print
Digital printing techniques do not require any sort of printing plate as it transfers the image to the surface of the box easily without a plate.
UV Print
Safeguard the printed area from fading and make them more attractive.
Pantone
Utilization of a universally accepted color-matching system for printing the boxes.
Hot Foil Stamping
Print the foil detail by using the hot dies on the surface of the packaging boxes.
Cold Foil Stamping
It is a removable foil stamp that is applied without pressing any hot die or pressure on the boxes.
Blind Embossing
Create the raised area on the box surface by applying the pressure, not the inks.
Blind Debossing
Just like the craving on the box created by using letter plates or letter presses.
Registered Embossing
Create both the texture as well as the depth and endow a 3d effect to the area of the box.
Combination Embossing
Both the design as well as foiling is utilised at the same time to create a more appealing presentation.
Window Patching
Create a plain see-through cut in the box that is covered with a see-through plastic sheet.
Aqueous Coating
Provide tear-free impact to the packaging with a clear and fast-drying water-based coating at the time of printing.
UV Coating
Add protection against the damaging impact of UV sun rays by applying the UV coating to the packaging.
Spot Gloss UV
Annex the glossy effect on the specific areas of the packaging through spot coating.
Soft Touch Coating
Use the soft touch coating to make the darker and dull areas of the packaging velvety and smooth.
Varnish
Provides protection as well as perfect presentation to the printing part of boxes.
Lamination
A very thin plastic film is pasted in the boxes to make them more durable and long-lasting.
Anti-Scratch Lamination
This thin film of plastic is used to endow the scuff as well as scratch resistance to the boxes.