Mailing bags
Mailing-Bags.co.uk is a division of Polybags specialised in mailing packaging. Our range includes polythene mailers, courier sacks, postal boxes and padded envelopes. We also offer biodegradable mailorder bags and bio envelopes.
Mailing bags are manufactured having in mind what needs to be posted. Mailers can provide more than just safely transporting packages, from protection of goods with bubble mailers to promoting a company with custom printed polythene mailers.
Here we introduce a few popular choices for mailing bags, all available in different sizes and colours and we hope that you find the right mailer for you needs:
Economy mailers
Perhaps the most popular choice for economy mailers is the clear polythene mailing bags, made from strong polythene ideal for when posting large quantities of leaflets ,magazines, newsletters or any other kind of mailing in which clear packaging may be preferable. Economy mailing bags are very secure as this type of plastic wont tear easily. They may also be ordered with a self-seal strip or, for an even more economic mailing bag, just heat seal. Address labels can be attached or, if you prefer, you could use mailing bags with write on panels for addressing your packaging. If the type of mailing is confidential or if mailing a different type of product in which clear plastic mail bags might not work then we can also provide all the same features of a clear polythene mailer on a opaque mailing bag. We can offer many other options for mailing bags, available in coloured or plain plastic, so we are sure that you will find the right economy mailer for your needs.
Mailorder bags
Mailorder bags are used almost every day by companies to deliver online orders or to send brochures and marketing material. Mailorder bags are ideal for this type of posting as they are strong, tamper proof and water resistant, ensuring whatever is being mailed arrive safely and in the same condition as when it was posted.
Mailing sacks and Security mailers
Also known as courier sacks, mailing sacks are heavy duty postal bags designed to protect and delivery of products anywhere in the world. Mailing sacks are manufactured from strong co-extruded material, usually lined with bubble film or foam, to ensure the mailing bag can withstand transport and handling without damaging its contents. Security mailers are produced as a tamper evident, opaque black mailing sack made from strong and thick polythene to provide strong tear resistance and keeping its contents confidential.
Postal boxes and rigid mailers
Polythene mailers are good for when the material being posted is flexible if, however, you need to post a rigid item or don't want to crease important documents then rigid mailers can offer all a mailing bag can plus it wont bend or crease.
Jiffy bags and bubble mailers
An alternative to the more expensive postal boxes and rigid mailers is the padded envelope, commonly known as a 'Jiffy Style' envelope. Padded envelopes are manufactured with an inner layer of bubble wrap to protect against damage when posting fragile items. such as DVDs and Blue-Rays.
Biodegradable mailing bags
If you worry about the environment and believe polythene film is not the best choice, you will be pleased to know that we can also manufacture environmentally-friendly alternatives to polythene mailers without loosing any of the benefits and features of the plastic mailing bags. Biodegradable mailing bags are produce with a high performance, high clarity recyclable film and they are generally used to post brochures, magazines and catalogues. Bio mailers also offer substantial savings in postage as they are lighter than paper but waterproof and strong. Bags can be supplied as plain bags or with white write on panels and are available in a variety of standard stock sizes. These eco-friendly alternatives are definitely the way to go if you have any environmental concerns about the use of polythene mailers.
Coloured dispatch bags
If clear mailing bags don't match your style requirements or the standard blue mailorder bags wont pronounce the colours of you company then we can also offer a range of brightly coloured dispatch bags. Mailorder bags are available in baby pink, eco green, vibrant purple or the famous, best-seller glossy blue. If none of our standard colours don't go with your style please get us to call you as we can custom manufacture them for you, and if would like an extra personal touch we can also add your company's logo to your dispatch bags.
Custom mailing bags
Custom printed mailing bags could show a company's postal address, for business reply for instance, or have a printed postage impression, good for when you’re sending large quantities of mail. Companies could also have logos and sales messages printed on the mailing bag. Customisation does not only cover colours and printing, it also includes custom 'address viewing windows'.
Standard mailing bags and their properties:
- Clear polythene mailers and Economy mailers:
- Clear plastic front panel, allows for good visibility of contents.
- Expose catalogs and promotional mailing items.
- White plastic backing for labeling and postage.
- Optional pre-printed address window
- Mailing sacks and Security mailers:
- Easy opening perforated tear-strip .
- Lightweight, saves on postage.
- High strength seams allow over-stuffing.
- Ink, stamps and labels adhere easily.
- Water resistant.
- Tamper resistant.
- Tough, tear-proof polythene envelopes.
- Color Polythene Mailers or Opauqe Mail order bags:
- Your product will be opened immediately with these high gloss mailers.
- Attractive waterproof envelopes make mailing and promotions stand out.
- Long-side opening has peel-and-seal strip to make closure easy.
- Bubble mailers and padded envelopes:
- Tear proof and water resistant mailer ideal to protect delicate items.
- Bubble lining cushions and protects the insides.
- Smooth surface perfect for handwriting or labeling.
- Super lightweight mailers. Save on postage to nearly pay for the mailing bag.
What the internet says about mailing bags
Economy mailers earn their place when low-cost despatch matters above display, because they reduce spend on secondary packing without adding much weight to the consignment. The challenge is to retain the sheet or film light while still giving enough resistance to tears, scuffs, and corner crush in the mailing system. If the gauge is also thin, returns and complaints soon eat into the saving; if it is also heavy, the cost advantage disappears and postage can rise as well. A superb mailer balances material usage, seal quality, and easy packing on the line, which retains throughput moving and waste below control.
Details about Black Mailing Courier Bags Mixed Sizes 161x240, 250x350, 350x500 and 425
Courier bags in mixed sizes work optimal when the pack matches the job, because the proper earn comes from reducing slack, movement, and the need for additional outer packaging. A 161 bag suits small garments or documents, while the larger 250x350, 350x500, and 425 options cope better with bulkier consignments and flatter packing plans. In dispatch, that spectrum assists staff select the nearest fit instead of overfilling a smaller bag or wasting material on a bag that is also big. Black polythene suppliers also gives a tidy, opaque stop that conceals the contents and stays practical in handling. Good size control retains bagging quicker and cutbacks on damage and wasted film follow naturally.
Mail order bags sit in a less glamorous corner of the packaging trade, yet the engineering brief is unusually exacting: the film has to withstand conveyour abrasion, corner impact and the casual brutality of reverse logistics while contributing as small as potential to tare weight. That is why the better formats tend to rely on carefully balanced co-extruded polythene suppliers structures, where high-density polymer content lends puncture resistance and stiffness, and lower-density layers maintain seal integrity and controlled flex at the fold lines. Micron-specific gauging matters here; also light and pallet stability suffers once consignments are stacked in mixed loads, also heavy and volumetric efficiency is quietly eroded across thousands of selects. The more competent designs also address warehouse-floor irritants that rarely make it into sales copysurface resistivity can be tuned to mitigate static cling on automated packing benches, peel-and-seal strips need consistent stickiness despite dusting from corrugated stock, and secondary bagging has to be avoided unless there is a pure pollution risk. The more fascinating shift, though, is not merely in transit performance nevertheless in stop-of-life logic: mono-material buildings facilitate cleaner recyclability than mixed laminates, and when melt-flow consistency is preserved in the recovered feedstock, the amortised energy profile becomes rather more attractive than plenty think. In practice, the optimal mail order bags are not innovative in any theatrical sense; they are simply engineered to retain the select-face moving, keep safe the consignment through a messy distribution chain, and return to the waste stream with less material confusion than the sectour has historically tolerated.
Blue polythene suppliers Mailers
polythene suppliers mailers of this type are engineered less as a simple outer wrap and more as a controlled barrier system for package fulfilment; the toughness comes from high-density polymer chains and disciplined micron-specific gauging, which together resist puncture from boxed corners, folded hardware and the normal abrasion picked up in conveyour handling. The extended lip is not a cosmetic flourishit improves pack-line cadence by giving operatives a cleaner presentation edge amid loading, while the permanent self-seal strip removes the variability associated with taping and secondary bagging, tightening pack consistency across a consignment dash. On the warehouse floor that translates into better select-face efficiency, less reworks at despatch and more stable palletisation because excess flap bulk is reduced. There is also a less apparant materials angle: where the mailer is specified as a mono-material polythene suppliers structure, recyclability is materially simpler than for mixed-format packs, provided the melt-flow consistency is maintained through conversion and the adhesive zone does not compromise the recovery stream. The result is a format that mitigates tare weight impact and assists volumetric efficiency without surrendering the surface durability needed for modern package networks.
Ted Cruz's Iowa Mailers Are More Fraudulent Than Everyone Thinks
Mailers can be weak evidence if the scoring behind them does not match proper client data, and the same problem appears in packaging when the gross pack spec is matched to the gross job. A printed mailer that claims to target a person precisely only works if the data is clean and the assumptions are sound; otherwise it becomes a part of paper with no practical value. That is much the same as picking the gross size, board grade, or film gauge for a dispatch dash and then wondering why damage or waste rises. Good mailers rely on proper information, tight control, and a transparent link between the message and the receiver, or the all effort sees clever on the surface nevertheless fails in use.
Be the first to review “4″ x 6″ Grey Mailing Bags Packs” Cancel reply
Dark grey, opaque mailing bags do above obscure contents; they reduce opportunistic inspection while keeping the packline brisk, which matters when consignment velocity and select-face efficiency are below pressure. The 4 x 6 format sits neatly in the hand and on the bench, limiting dead air and improving volumetric efficiency in secondary bagging operations, while the peel-and-seal strip removes the faff of tape, hot-melt or repeat handling. In practice, that means less touchpoints, cleaner closure integrity and less labour drift across the dispatch floor. The polythene suppliers structure, when specified with consistent gauge and decent melt-flow stability, also retains tare weight down without sacrificing enough stiffness to upset pallet stacking or cartonisationan unremarked nevertheless useful advantage where stock has to transport through a mono-material stream and into a recycling route without elaborate sorting.
BUBBLE ENVELOPE JIFFY BAGS
Bubble envelope jiffy bags sit in that awkward nevertheless commercially useful space between letter-mail and full cartonage; a padded C5, C5+ or C4+ format with peel-and-seal closure gives dispatch teams a tidy reply where secondary bagging would otherwise become cumbersome. The engineering lies in the laminate rather than the label: a deliberately controlled bubble profile distributes point loads across the face of the envelope, while the outer polythene suppliers skins are gauged to balance puncture resistance against tare weight and volumetric efficiency. That matters in select-face operations, where repeat handling exposes corners, clasps and hard inserts to scuffing; a bag that maintains seal integrity through transit reduces the need for rework, repacking and the sort of stock loss that tends to display up only after products have already left the despatch bay. In circular-economy terms, mono-material building and reduced material input can ease recycling pathways, provided the sealing layer and printed coverage have been specified with the stop-of-life route in mind.
Large Bubble Mailers
Large bubble mailers in metallic teal and pink sit in a curious middle ground between presentation pack and workhorse consignment sleeve; the visual stop does above grasp the light, because a metallised outer film can assist stiffen the face of the pouch while the bubble layer inside provides the cushioning needed to mitigate transit abrasion and corner crush. In operational terms, that combination improves select-face clarity and speeds secondary bagging, particularly where mixed stock is handled in dense runs rather than tidy shopping-facing multiples. The lighter tare weight also assists volumetric efficiency, which matters when pallet stability and cubic yield are being managed against transport tolerances. A mono-material route remains preferable where recovery is being considered, yet even in this decorative guise the underlying engineering is plainly aimed at reducing damage claims rather than merely dressing a package.
Fine-art consignments tend to expose the shortcomings of normal transit packaging with unique clarity; abrasion at the corners, static select-up on coated surfaces, and needless tare weight all become material risks once the package enters a multi-touch carrier network. In practice, biodegradable mailers mitigate part of that burden by attaching low-gauge weight with enough puncture resistance to withstand secondary bagging, sortation belts and palletised hand-offs, while avoiding the volumetric penalty associated with heavier board formats. The worthwhile detail sits in the polymer engineering rather than the label: film draw, seal integrity and melt-flow consistency determine whether a mailer remains dimensionally stable below fluctuating depot temperatures, and whether the contents stay isolated from transit dust and moisture ingress. Where the structure is mono-material or close enough to maintain recoverable waste streams, the packaging case becomes less about token optics and more about feedstock discipline, simplified stop-of-life handling and lower amortised energy across repeated packing runs. For operations concerned with select-face efficiency, stock holding and claims exposure, that balance between protective performance and controlled environmental burden is generally the point.
Padded Mailers Market - Global Industry Analysis and Opportunity Assessment, our telephone
Demand for padded mailers is optimal read not simply as a rise in unit volumes, nevertheless as a reflection of how fulfilment operations have re-engineered the package itself. Where stock profiles have shifted towards smaller, higher-frequency consignments, the appeal of a lightweight padded format becomes fairly apparant: low tare weight maintains carrier thresholds, while the envelope geometry improves volumetric efficiency on both inbound pallet loads and outbound sortation. That commercial logic only grasps, nevertheless, if the substrate behaves predictably below warehouse strain. Bubble-lined and fibre-lined buildings must balance puncture resistance with seal integrity; gauge tolerance by even a few microns can alter machineability on automated packing lines, and poor surface slip can slow select-face efficiency at scale. There is also the less glamorous matter of secondary bagging, which operatours increasingly search for to remove where the mailer itself can absorb abrasion and minour impact without product marking. Market demand, then, is being shaped by above e-commerce arithmetic it is tied to material science and handling economics, from melt-flow consistency in the extrusion of polythene suppliers films to the circular-economy pressure for mono-material recyclability, lower adhesive pollution, and packaging formats whose amortised energy profile stands up to scrutiny above very big production runs.
Get 20% off black secure mailing bags this festive season
If you're looking for mailing bags, there's a fantastic festive offer over at our parent site Polybags.co.uk this Christmas. They are giving 20% off all orders on black secure mail sacks over £75. If you need top content confidentiality in your mailing bags then this is the bag for you.
Just apply voucher XMASMAIL16 and you'll get five strong opaque black mailing sacks for the price of four when you spend over £75. The offer is applied automatically to your basket. Please note there's strictly one voucher per customer and it's a limited time offer, so if you want to make the most of this Christmas bonus, then don't delay.
