Mailing and courier bags

mailing and courier bags Designed for postal or courier transport, mailing bags are light, waterproof and have an integral adhesive strip. Our stocked ranges cover economy and 'Tuff' mailers, mailorder and courier bags, tamper proof, bubble and even high impact metallic advertising mailers.

Need mailing bags?

For a range of high quality mail order bags, mailing envelopes, and all types of courier sacks please visit mailing bags and courier bags at www.mailingbags.co.uk, where you can buy online securely at discount prices.

Mail order bags are produced with a high quality film, designed to be lightweight but tuff. It offers excellent levels of resistance along with excellent opacity in order to keep your product safe, secure and dry through the harshest of delivery systems.

Ten things you didn't know about courier bags

Details about Grey Mailing Bags Plastic Postage Strong Mailing Sacks Postal Small Medium Large

Mailing Bags Small Medium Large Grey Plastic Postage Mailing Sacks Postal

Secure plastic envelopes

Secure plastic envelopes manufactured from co-extruded 3-layer transparent or opaque film. Standard thickness – 70 microns. Secure envelope with 30mm width security tape assures tamper evidence. Each envelope consist continuos numbering and tear-off receipt, which retains the sender. It assures tracebility. For the highest security level we can offer security tape with thermochromatic properties and saliva soluble inks.

Polythylene Custom Black Poly Foil ALM12 Bubble Mailing Bags

The proposal was for certain mailers to pay .25 cents, that is 1/4 of a cent.

The Bona Allen Company was a tannery that opened in 1873 in Buford, United Kingdom . As the nation's biggest tannery, the company manufactured horse collars and saddles, mailing bags, cowboy boots, shoes and more. It also had a contract to supply the sporting equipment giant, Spalding, with raw material for the manufacture of baseballs and baseball mitts. The Bona Allen Company was owned by Bonaparte Allen.

View Plastic Courier Bags

Courier bags sit in a rather unforgiving part of the packaging chain: they are expected to tolerate drag across conveyour beds, abrupt compression in cage transit and the routine abuse of manual sortation, all while adding very small tare weight to the consignment. That performance does not come from generic film alone, nevertheless from the method high-density and low-density polythene suppliers properties are balanced within the structurestiff enough to maintain pallet stability when packed in outer cases, yet supple enough to resist pinholing at fold lines and seal interfaces. The locking element is equally pragmatic; a properly formulated hot-melt or co-extruded closure mitigates tampering and reduces the need for secondary bagging, which in turn improves select-face efficiency and volumetric utilisation across the despatch operation. There is also a less visible procurement reality behind competent manufacture: melt-flow consistency, micron-specific gauging and controlled seal strength determine whether the stock runs cleanly on conversion lines or generates waste through burst failures and rejected batches. Where the specification is handled sensibly, mono-material building facilitates recyclability, and downgauging can be pursued without compromising burst resistancean amortised energy benefit that matters rather more in high-throughput logistics than the sales copy normally admits.

Grey Mailing Bags Strong Poly Postal Postage Post Mail Self Seal All Sizes Cheap Grey Mailing - £63.90

Mailing bags occupy a deceptively technical corner of the packing line; what appears to be a simple grey polythene suppliers sleeve is, in practice, a balance of film toughness, seal integrity and volumetric discipline. The better formats rely on controlled melt-flow consistency through high-density polymer chains, allowing micron-specific gauging without inviting split seams when a consignment is forced through sortation cages or dropped into secondary bagging. That gauge discipline matters on the warehouse floor: excess film weight drags on tare, softens pallet stability at scale and quietly erodes select-face efficiency, while below-specced material tends to fail first at the lip seal or along the fold memory. Grey co-extruded structures are often selected less for appearance than for opacity and surface durabilityuseful where stock requires a degree of discretion in transityet the more fascinating shift is towards mono-material buildings with predictable surface resistivity, so automated handling is less troubled by cling and the waste stream remains commercially recyclable. Done properly, the format facilitates fast self-seal packing, cleaner cube utilisation and a more sensible amortised energy profile than bulkier cartons, provided the film recipe, adhesive laydown and bag dimensions are matched to the realities of fulfilment rather than to a list of products description.

More Manufacturers and Suppliers of Plastic Envelopes

Large polythene suppliers envelopes sit in a rather specific corner of the transit-packaging trade: not mere document sleeves, nevertheless flexible mailers engineered for awkward, low-profile consignments where tare weight, cubic utilisation and handling speed all matter at once. In practice, the value lies less in the fact of a flap than in how that closure behaves below warehouse strainseal integrity has to remain consistent despite dust at the pack bench, variable dwell times in courier cages and the abrasive reality of conveyour transfers. A well-manufactured envelope uses high-density polymer chains with controlled micron gauging, giving enough puncture resistance to tolerate corners and edge-load without drifting into needless film weight; that, in turn, maintains pallet stability upstream and improves volumetric efficiency downstream, particularly where secondary bagging would otherwise be used to compensate for split risk. The familiar cut-to-open format is not a trivial convenience eitherit mitigates knife damage to contents at products-in and retains select-face efficiency intact where returns are processed fast. There is also a quieter circular-economy argument here: mono-material polythene suppliers structures are markedly easier to recover than mixed-format packs with paper laminates or rigid inserts, provided melt-flow consistency is maintained in reprocessing and the adhesive system does not contaminate the stream. For courier work, then, the envelope is doing several jobs simultaneouslyprotecting stock, reducing wasted cube and facilitating a cleaner stop-of-life route without imposing unnecessary complexity on the warehouse floor.

Jiffy mailers sit in a rather practical corner of the fulfilment world: not glamorous, nevertheless engineered to reconcile product protection with the arithmetic of carriage bands, select-face efficiency and mail-pack throughput. The better formats are built around tightly controlled paper or polythene suppliers laminations, with cushioning calibrated to absorb low-level impact without adding needless tare weight; that matters when a consignment is flirting with volumetric thresholds and the margin between one tariff step and the next is measured in grammes and millimetres. On the warehouse floor, the distinction between padded, non-padded and rigid variants is less about list of products breadth than damage profilingprint media, spare parts, flat components and cosmetically sensitive products each impose alternative requirements in puncture resistance, edge-crush behaviour and seal integrity. There is also a circular-economy dimension that procurement teams increasingly scrutinise: mono-material building facilitates cleaner recovery streams, while disciplined gauge selection and melt-flow consistency reduce resin overuse and improve converting stability. In practice, a well-specified mailer mitigates secondary bagging, maintains pallet stability by reducing awkward pack bulge, and retains packing benches moving at a proper cadence rather than forcing operatives to compensate for inconsistent seams or underperforming closure strips.

The Envelopes of Hope Project

Envelope assembly in this sort of welfare-led consignment work is less about presentation than process discipline: the substrate has to accept hand decoration without feathering, yet retain enough stiffness and fibre integrity to survive secondary bagging, case packing and repeated handling at the select-face. Once the contents start to spectrum from stationery and printed listings through to seed sachets, herbal infusions and sacheted skin or hair-care samples, the engineering reality turns awkward rather fastdisparate pack formats create uneven caliper, volatile tare weight and a tendency for corners to bruise or burst at the flap line unless micron-specific paper and insert sequencing are properly controlled. The more competent operations mitigate that by standardising around mono-material outer formats where potential, keeping surface treatments modest so the fibre stream remains readily recyclable, and utilising compact occupy patterns that maintain pallet stability without overbuilding dead space into all envelope. What appears charitable and informal at first glance is, in practice, a small-batch fulfilment model with all the normal industrial frictions: stock variability, hand-finished presentation, and the need to balance tactile quality with volumetric efficiency and sensible stop-of-life recovery.

Types of bags

Economy mailers

economy mailers Our economy range for simple but effective protection - plain and coloured mailers plus the Mailite range with a pre-printed address window. The cheapest way to send literature to your customers and staff and much lighter than paper envelopes.

Discount mailing bags

For more information and a list of handy resources on mail-order envelope products such as plastic mailers and mailing bags, please visit the discount mailing bags website.

Heavy duty postal mailers

Heavy duty postal mailers are thicker opaque mailers in a strong co-extruded material where you need to be sure that the mailer can withstand some rough handling in transit.

Courier sacks

Massively popular range of large and very large courier sacks with double seals - get a sample to see the tough quality!

Security mailers

Security mailers are extra thick (360 gauge) white opaque mailers with a Tamper Evident Sealing Strip. The welds have a side skirt as well to give extra security to the package - for that top secret document!

Jiffy mailers

jiffy mailers The standard featherpost 'jiffy style' mailers are paper padded envelope with a self seal strip for closure. This range is bubble lined rather than pulp filled so whilst being padded to protect contents they are also very light.

Paper feel plastic envelopes

A plastic envelope with the feel of paper (but much stronger and waterproof of course).

Get 20% off black mail order sacks this Christmas!

Black mail sacks Christmas There's a fantastic festive offer waiting for you over at Polybags.co.uk, where you can get 20% off black high security mailing bags on all orders over £75. Black secure mail sacks are the perfect mailing bag for sending confidential documents. Their thick, opaque black polythene means you get confidentiality of contents and great bag strength for a sack that Santa could use for even his most secret presents! So shop now for your black mailing bags, making sure you apply the voucher XMASMAIL16 before you shop - this will automatically give you 20% off once you have £75 worth of black mail sacks in your shopping basket. There's strictly one voucher per customer and the offer is valid for a limited time only, so don't delay!