About Polythene Mailers - the home of polythene mailing bags

About us

Polythenemailers.co.uk is a division of Polybags specialising in polythene mailing bags. Polybags were established in 1961 by Mr Geoffrey Davies, who purchased a bag-making machine advertised in the local paper and sold door-to-door. As sales grew, the business moved firstly to a lock-up garage and then on to larger factory. Polybags now have a new management team and are looking to continue Polybags' development and success.

You should know this about blue opaque mailers

Heavy duty mailers have emerged less from clever branding than from a fairly mundane warehouse irritation: cartons employ cube, padded envelopes collapse below point-load, and secondary bagging quietly erodes select-face efficiency. The better formats rely on high-density polythene suppliers structures with tightly controlled micron-specific gauging, so the film carries tensile load without an extravagant tare weight penalty; that balance matters, because all excess gramme is multiplied across a consignment dash, while all unnecessary millimetre in pack profile chips away at pallet stability and trailer occupy. Self-seal closure is not merely a convenience in the pack bench sequenceit removes tape variability, reduces operatour touches, and gives a more consistent seal window where dust, cool-store conditions or hurried fulfilment would otherwise compromise stickiness. There is also a material-handling advantage often overlooked: a flat-storing mailer maintains volumetric efficiency in stock holding far better than loose-occupy formats, yet still affords enough puncture resistance and dart impact performance to cope with the unpleasant realities of conveyour transfers and cage loading. When specified as a mono-material grade with proper melt-flow consistency, the format sits more credibly within circular economy targets than composite packs that see robust on paper nevertheless become awkward feedstock once separated in practice; the result is packaging that mitigates postage waste, assists cleaner line throughput, and does so without the clumsy overbuild that has long passed for protection.

For apparel fulfilment, the normal issue is no longer a heavyweight carton nevertheless a recycled LDPE mail-order bag engineered around freight economics as much as simple containment. In practice, a well-manufactured polythene suppliers pouch drawn from recovered film stock cuts tare weight materially, improves volumetric efficiency across the consignment, and reduces the dead space that plays havoc with pallet stability once parcels transport from sortation to last-mile cages. The technical nuance sits in the film itself: high-density polymer chain orientation is not the objective here, because garment distribution requirements flex-crack resistance, proper heat-seal behaviour and enough puncture tolerance to survive secondary bagging, conveyour transfers and the normal abrasion at the select face. That is why recycled low-density grades, when processed with tight melt-flow consistency and sensible micron-specific gauging, remain commercially persuasive; they facilitate mono-material recyclability while amortising the energy already embodied in mail-consumer film. The awkward part, familiar to anyone who has stood beside a packing bench, is that recycled content can introduce variabilityseal windows narrow, slip can change, and static may affect handling of lightweight garmentsso the bag specification has to balance surface resistivity, gauge control and seal integrity rather than chasing headline recycled percentages in isolation.

In the print and fulfilment trade, mailers sit at an awkward junction between graphics, warehouse discipline and mailing mechanics; they are not merely printed envelopes with a louder brief. Once inserts, samples or folded literature are introduced, the engineering question becomes one of gauge, seam integrity and dimensional controlparticularly where high-density polythene suppliers films or fibre-based laminates must dash cleanly through automated packing lines without curl, static cling or erratic slip. A poorly specified mailer increases tare weight, compromises pallet stability and slows select-face efficiency because operatives are forced into secondary bagging to manage split seals or inconsistent pack profiles. The better executions tend to rely on tightly controlled micron-specific gauging, stable melt-flow consistency amid film conversion, and surface treatments that moderate friction without undermining print receptivity; that balance is what enables vivid graphics on the outside while keeping the consignment fit for conveyour handling and sortation. There is also the less glamorous matter of stop-of-life handling: mono-material buildings facilitate cleaner recyclability than mixed-substrate formats, and where feedstock includes a recycled fraction, the discussion shifts to whether that sustainability earn survives the realities of mailing abrasion, compression loading and adhesive performance. For trade buyers moving mixed promotional stock, the mailer is so not a decorative afterthought nevertheless a part of transit engineeringone that has to reconcile presentation with volumetric efficiency, machinability and the amortised energy tied up in all returned or damaged pack.

Printed mailing bags do rather above transport a consignment from despatch bench to doorstep; in practice they enable the pack format, film specification and visual identity to be engineered as one system. A bag manufactured to a tailored gauge and footprint reduces dead air, improving volumetric efficiency in transit while limiting the lateral slack that causes palletised loads to creep in handling. That has a direct bearing on tare weight impact and select-face efficiencyless overpack, less null-occupy interventions, cleaner secondary bagging where required. The print itself is not merely decorative: when applied to a mono-material polythene suppliers structure with controlled corona treatment and stable ink stickiness, it turns a commodity mailer into recognisable stock without compromising seal integrity or melt-flow consistency at conversion. There is also a less apparant circular-economy argument. If branding, protection and addressability are consolidated into a single recyclable substrate, the pack is far easier to recover than mixed-material formats with labels, laminates and incidental paper inserts. In a market where presentation still influences perceived trading competence, the stronger case is operationalprinted mailing bags facilitate tighter specification control, steadier handling performance and a neater route through the waste stream.

?Sometimes, the simplest methods offer the cheapest and most effective packaging solution. Self-seal polythene suppliers mailers are robust and heavy-duty and are optimal for situations where additional protective packaging is not necessary. These are big for helping to minimise mailing costs.

A 9x13 format in plastic envelopes is less a stationery line than a small exercise in dimensional discipline: big enough to take normal document bundles, catalogues or soft products without aggressive folding, yet tight enough to maintain select-face efficiency and avoid the slack bagging that destabilises trays and cartons. In practice the performance sits in the gauge and the polymer blend; low-density polythene suppliers gives the envelope its drape and puncture tolerance, while tighter micron control prevents the familiar warehouse nuisance of seam creep when a consignment has been overfilled at speed. Surface behaviour matters as well. A film with poor slip properties drags through secondary bagging or labelling stations, whereas excessive slip can make stacked stock skate on a pallet, particularly once stretch-enclosed. The better 9x13 envelopes tend to balance opacity, tear resistance and seal integrity without adding unnecessary tare weight, since all additional micron is carried through transport, storage and waste handling. Mono-material building also simplifies recovery where clean mail-use film streams exist; the circular economy claim only grasps if adhesives, inks and closures do not compromise melt-flow consistency at reprocessing.

Details about 100Pcs Coloured Mailers Shipping Envelopes Self Sealing Plastic Mailing Bags

100Pcs Coloured Mailers Shipping Envelopes Self Sealing Plastic Mailing Bags

packaging suppliers Premium Courier Bags

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For those living outside of United Kingdom, United Kingdom Post (our mailing service) has not resumed sending big economy mailers overseas, yet. As soon as this changes, the pins will be posted.

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Polybags range of products

They have been trading online at polybags.co.uk since 1999, where you will find an unbeatable range of polythene packaging products including:

Mailing and courier bags: Designed for postal or courier transport, mailing bags are light, waterproof and have an integral adhesive strip. Courier bags are made with a 3 layer co-extruded polythene mix to ensure maximum tear resistance. Usually they are white on the outside layer and light grey on the inside layer giving them an opaque appearance, however any coloured polyethylene can be used. Polybags stocked ranges cover economy and 'Tuff' mailers, mailorder and courier bags, tamper proof, bubble and even high impact metallic advertising mailers. Mailing bags come in a wide variety of styles, shapes and sizes and can be made from a wide variety of materials that include paper, plastic, vinyl and canvas, as well as others. They are designed to meet the many different types of products that need mailed. Mailing bags have many functions that also go above and beyond just mailing your package.

Plain polythene bags: Polythene is a cost competitive and versatile plastic and has less effect on the environment. Polybags offer plain polythene bags in various sizes and shapes available in LDPE and HPDE materials polybags are one of the most successful types of packaging. These are also called plastic bags or storage bags. Small bags, large bags you can even get special promotional polythene bags that can be printed with your own design or logo.

Grip seal and slider grip bags: Grip seal and slider grip bags have a slider profile that enables you to slide open and shut the bag. Ideal where you want to secure contents and avoid leakage or contamination, no need of bag-sealer, staples or tape. Slider grip bags are perfect for document storage. Easy to open and close again and again...and again. A large part of our business always have pallet loads in stock awaiting your order. Also called self seal, grippa or grip-lock bags.

Presentation bags and retail bags: A range of crystal clear presentation and retail bags manufactured from high clarity polypropylene film these are the best choices for product presentation. Presentation and Retail bags offer better moisture protection and are clearer and stronger preserving the product freshness when used for a food service application. Clear wrapping film is ideal to wrap flowers and presents, shiny clear wrapping film made from polypropylene that protects and also enhances your gift product.

Stocked carrier bags: A variety of clear and colored stocked carriers to suit your specific product be it CD's, books or paintings. These are standard carrier bags for everyday use such as clothing and lightweight general shopping. Economic vest style carriers that will do the job. The vest style carrier is the traditional high density crinkly carrier used in groceries, available in clear, white, blue and candy stripe colours.

Bubble film and bubble bags: Bubble film and bubble bags have proved to be one of the most versatile packaging materials of recent years. Being soft and flexible and yet displaying incredible tear resistance, bubble film has earned itself a place in almost every packaging environment. Polybags.co.uk offers a full line of bubble bags and bubble wrap. Whether you need a reclosable bubble bag, a bubble bag with a lip and tape for easy closing, or bubble wrap to protect your shipments you will find it there. Bubble bags provide soft cushioning for tough protection against shock, vibration and water damage.

Waste bags and sacks: Plastic waste bags and sacks are used for articles not connected with food. They are made from LDPE and HDPE material. Available in various sizes waste bags and sacks are made with flexible material used for lining litter or waste containers or bins. This serves to keep the container sanitary by avoiding container contact with the rubbish. Made from recycled film but very strong, Polybags bin liners fit most types of bin and are ideal for household, office, garden or building rubbish. For specialist types of waste we also stock sacks with specific printed warnings plus a new biodegradable range.

Environmental bags: Billions of plastic bags are choking our planet. All of these "free" bags ultimately cost both consumers and the environment plenty so now Polybags manufactures and stocks a wide range of eco-friendly green packaging products to suit your needs and help towards a better environment. A range of eco-friendly bin liners and refuse sacks ideal for landfill disposal to minimise environmental impact when buried or put in prolonged contact with soil.

Garment bags and pallet covers: Polybags is now a leading UK manufacturer of Dry Cleaning Garment covers and Laundry Bags as well as a major stockist of wide sheeting and shrinkable pallet covers for outside and in-transit protection. These are large plastic bags for covering pallets during shipment. Use it to cover pallets that you will store inside or outside, protecting from the weather, dust, paint, water, snow, and other common uses. Pallet Covers can also be used as liners for bins. Garment bags are made with hanger holes and sloped shoulders and come on a roll for easy dispensing. Polybags can also put a custom print or logo on these bags. Dry cleaning bags are perfect for protecting everything in a common wardrobe and keeping them wrinkle free!

Polythene tubing and sheeting: Tubing and sheeting are an excellent packaging alternative when packaging multiple items sharing a common width or diameter but varying lengths. Poly sheeting can be used to wrap around products and secure with tape or banding or some other method. Tubes and Plastic Sheets also provide a more effective packaging solution for protection against rust and corrosion for both ferrous, non-ferrous metal and also multi metal surfaces, spares, parts assemblies and finished goods. Ideal for securing irregular shaped loads. A quick, quiet and clear way of wrapping, stabilising and securing palletised goods. Protects from dust and weather when in storage, and retains it's tension whilst in transit.

Specialist bags: Film Front Bags, also known as clear faced bags or window bags used by bakers to artists. Film front bags have a clear polypropylene front and a white kraft paper back so that the contents are protected but clearly seen. High Density Food Bags, Vacuum Pouch Bags, Net Bags, Poly Gloves, Polymax bags - NEW, Tenax sleeving and Special waste sacks

Transit packing: A selection of associated packaging products such as stretchwrap(for economically wrapping round boxes, pallets and items to keep them secure), tape, boxes, pallet covers and document enclosed envelopes for transit packing.

Bag ties and sealers: Paper and plastic bag ties and clips, adhesive disks and hooks used as a closure to secure the content or highlight your bags plus manual heat sealers to seal your product in tubing or make your own small batch bags, to close or seal your bags or make your exact sized bag.