Mailing bags

Buy best value mailing bags now for a professional postage solution and strong, lightweight, waterproof protection.

Mailing bags are…

• Convenient for sending items in the post that require additional protection or are needed to carry a brand.
• Great at keeping package contents safe and dry during traditional mail or courier post.
• Also known as mailers, poly-mailers, plastic envelopes or mailorder bags
• Made from polythene to provide a perfect waterproof coating for your mail - much better than soggy envelopes!
• Very light which means that postage costs stay low
• Strong which means your envelope won’t tear or rip before it reaches its destination
• Similar in appearance to a regular envelope - rectangular and flat - and open in the same way, at one end to allow you to place your package contents inside
• Simple to use, with an adhesive strip running alongside the opening of the bag. Just fill the bag with your postage contents, rip off the covering tape, fold down the flap and your mailing bag is ready to post. Easy peasy!
• A great way to advertise your business. Get your company logo, design or slogan printed on the outside of the mailing bag and impress your customers as their mail lands on their doormat

Advice from the net on reclosable bags

Sealable freezer bags work well when frozen stock requirements protection from air, moisture and odours without taking up much room in the pack. The bag has to close cleanly, because a weak seal can let freezer burn beginning at the corners where cool air acquires in first. Flexible film also requirements enough strength to cope with handling in the freezer and amid picking, particularly when bags are stacked in a carton or moved through the warehouse. Clear film assists staff see contents fast, which speeds stock rotation and reduces the chances of the gross item being issued. A clean, tight seal makes the bag easier to trust on the shop floor and in the home freezer.

packaging supplierble plastic bags work well for loose dry toppings because they retain the occupy contained without taking up much room in the freezer. A crumble topping is a superb example: once manufactured, it can be portioned into a bag, pressed flat, and stored so the material freezes fast and thaws evenly when used straight from the bag. That shape also makes stock easier to stack and count, which is useful when several batches are held at once. The trick is to retain out excess air and close the seal properly, otherwise ice crystals and clumping soon affect the texture. Good bag closure saves waste and retains the topping usable later.

Reclosable poly bags work optimal when small parts need to stay together, visible, and easy to count in storage or on the line. A transparent bag lets fixings, spare components, and mixed kit be checked at a glance, which saves time when select-face stock turns fast or an operatour requirements the proper part without opening all pack. The reclose feature also assists amid partial use, because the contents can be shut back in rather than tipped into a tray or lost in a drawer. That makes the bag useful for sorting, dispatch, and loose-item control where tidy storage matters.

Heavy Duty Grip Seal Bags Gusset Pouch Silver Foil Smell Free Packing Dry Food

Heavy duty grip seal bags are the proper selection when contents need protection from damp, smells and rough handling after packing. A stronger film gives the bag enough body to survive movement on a busy line, rough stacking in storage and repeated picking at dispatch without splitting at the corners. The grip seal itself matters as much as the film, because a poor closure leaves a weak point where product can escape or moisture can creep in. That additional strength reduces leakage, retains stock cleaner on the pallet and cuts the nuisance of rebagging products that should have stayed secure first time.

Integrity Print Ltd transports into the manufacture of medical specimen bags

Specimen bags need a proper leak-resistant seal because the samples inside may be carried across wards, vehicles and laboratory desks before anyone opens them. A weak closure is above a trouble; it can contaminate paperwork, slow down testing and create handling problems for staff sorting through mixed consignments. The better bags retain liquid sealed away from forms and outer packaging, so the sample arrives in a condition that can be checked and processed without delay. That makes the bag a small item with a big role in sample control.

Slidergrip bags suit fast-moving warehouse and packing lines because the sliding closure is easier to seat than a plain press seal. The track gives a more proper close when fingers are cool, gloved, or working at speed, so less bags stop up half shut and leaking bits into a tote or carton. That consistency matters with small hardware, documents, samples, and dry products that need to stay together and clean. It also reduces rework at dispatch and retains secondary packing tidier, which saves time where picking rates are tight.

Zipper transparent ziplite bags with white top plastic

Ziplite bags work well for small parts because the transparent body lets staff check contents at a glance without opening the pack. That cuts a lot of handling at the select-face, where mixed fasteners, clips or sample kits can easily be muddled if they are opened and reclosed also often. The white top strip also has a proper job to transport out, giving a clean area for dates, batch codes or job notes while keeping the slider track aligned. A pack that closes squarely assists stop loose contents from escaping and reduces sorting time later, so the warehouse retains moving without unnecessary delays.

Zip slider bags in jumbo 2.5-gallon form need a film specification that stands up to repeated handling rather than a single tidy occupy-and-close cycle. A tougher polythene suppliers gauge assists the bag resist splits when it is dropped into cases, stacked on a pallet or dragged through a busy packing area, while still staying flexible enough to open cleanly. The closure also has to work with the material, because a slider that snags or slips can slow the line and create nuisance returns later. When the bag, slider rib and seal width are matched properly, the pack behaves far better in storage and transit.

Zip seal bags work well for dried elderflowers because the material is fragile, light and fast to spoil if it selects up moisture. A small shopping pack retains the flowers tidy on shelf and gives a clean sample format, while a 1kg bag is better for repeat use in kitchens or blending lines where the contents may be opened several times. The reclosable seal assists slow down damp air, which matters when fragrance and colour can disappear long before the product sees apparantly damaged. Chosen well, the bag assists freshness without making handling awkward, so the stock stays usable rather than turning stale in store.

Global Grip Seal Bags Market 2018 Professional Survey and Industry Forecast 2025

Grip seal bags are chosen as much for warehouse control as for the product they transport, because the proper format can save time at the select face and cut handling mistakes. Clear grades assist staff confirm contents at a glance, which matters when small parts, samples or mixed lines pass through busy dispatch areas, while write-on panels improve traceability only if the surface will grasp ink without smearing. Gauge selection also shapes performance: also light and the bag can split or puncture, also heavy and it adds unnecessary material and bulk. A well-matched bag retains stock moving cleanly and avoids rework later.

Mailing bag types

A mailing bag is a polythene envelope used to send contents in the post, but the name covers a whole range of different products. Here are just a few of them:

Lightweight economy mailers - the original and (according to many) best mailing bag. A traditional polythene mailer with no bells or whistles - just a strong, waterproof and lightweight envelope that is very reasonably priced and perfect for you to send items to your clients or customers without breaking the bank.

Glossy blue mail order bags - the mailing bag that speaks business, these metallic blue mailers are guaranteed to give your company the edge and impress your customers. Popular with online traders and mail order companies alike, these mailers are strong and professional in appearance without costing the earth.

Extra tough mailing bags - for those occasions where you want a little bit of extra protection to the contents of your post, these heavy duty mailing bags are perfect for withstanding bumps, scrapes and bangs in transit. Don’t mess with the heavy mob - these mailers are strong, tough and ready to rumble!

Vibrant colourful mailing bags - when you want your mail to stand out from the crowd, what do you do? You send it in a radiant, eye-catching coloured mailer! Guaranteed to bring any package to life, these polythene mailers come in a range of vivid colours - including baby pink, eco green and vibrant purple - to brighten up your customers’ day!

High security mailing bags - if your mail requires an extra level of security then a range of high security mailers are available to give you added peace of mind. Extra thick opaque mailers - available in black or white - provide top secret content confidentiality, while tamper-evident mailers that show if someone has been interfering with your delivery.

Print your very own personalised mailing bags

Take your business to the next level with printed mailing bags personalised with your company logo or design.

This is an ideal way to promote your business as your mail is guaranteed to stand out from the crowd and you are reaching the consumer directly in their own home or office.

There are many ways that you can personalise your mailers - a simple logo, distinctive colour scheme or typeface, company catchphrase or advertising slogan, to name but a few - and ensure that your delivery doesn’t get lost in a pile of post, but really stands out from the crowd!

A firm favourite with retailers in the UK and all over the world, printed mailers have proved to strengthen brand identity and increase customer awareness, so make sure you take advantage of a simple way to give your business a boost.

Where to buy mailing bags

Mailing bag manufacturers and suppliers include:

Polythene Mailers
Polythene Mailers are specialists in polythene mailing bags, stocking a huge collection of waterproof mailers in a variety of styles, shapes and sizes and plain or printed with your own design. With free delivery to any UK address, this is the place to go for polythene mailers!
www.polythenemailers.co.uk

Mailing Bags
The UK's online home of mailing bags caters for all of your mailer needs. Check out their huge catalogue of mailing bags in every style from economy mailers to glossy blue mailorder bags. Also features a fantastic size guide so you know exactly what size mailing bag to buy.
www.mailingbags.co.uk

Mail Order Bags
The home of mail order bags - the lightweight, waterproof and tough plastic envelopes that provide the perfect way to send your mail. Select from a huge range from heavy duty postal bags to light jiffy bags.
www.mailorderbags.co.uk

Plastic Mailing Bags
Mailing Bags is a fantastic website selling a huge range of polythene mailers at very competitive prices. Order online from a range of clear and coloured mailers, with free delivery to any UK address.
www.mailingbags.co

Mailing Bag
Another great mailing bag website, which sells a huge range of bags and provides a comprehensive rundown of why mailing bags are the postal bag of choice for online retailers.
www.mailing-bags.co.uk

Buy Mailing Bags
Packed full of information on mailing bags - including a detailed description of each mailing bag type - along with a comprehensive list of where you can buy them, this is a serious mailing bag website.
www.buy-mailing-bags.co.uk

Plastic Envelopes
Discount Plastic Envelopes is a great source of information on mailing bags and plastic envelopes. Whatever type of mailing bag you need you can find out about it here, along with information on ISO envelope standards.
www.discountplasticenvelopes.com

Polythene Mailing Bags
Find out all about polythene mailing bags at this fantastic website, which tells you all about mailers and why you should use them. Also features a section on eco-friendly mailing bags for those people who want to keep an eye on the environment.
www.polythenemailersdirect.co.uk

Courier Bags
This website is the place to go to find out all about postal sacks, courier bags and polythene mailers. Featuring a great in-depth list of each type of polythene mailer to help you choose the right courier sack for you.
www.couriersacks.com

Bubble Mailers
Bubble mailers is home of bubble mailing bags. Featuring all you need to know on the lightweight, bubble-lined mailers used to protect delicate items, along with eco-friendly alternatives. Check it out today.
www.bubblemailers.org.uk

Mailing Envelopes
If you're trying to decide what sort of mailing envelope you need to meet your mailing needs, then Mailing Envelopes is the website for you. A great place to find out the right size of bag along with details on a range of mailing bags.
www.discountmailingenvelopes.com

Poly Mailers
A great website to buy and find out more about polythene mailing bags. Listing details of a range of poly mailers available, helping you choose the perfect bag for you before you buy.
www.polythene-mailers.co.uk

Cheap Mailing Bags
A treasure-trove of information for anyone looking to buy mailing bags. Containing all the information you need to know on any type of mailing bag and how to get the best discount prices, you need go no further than Discount Mailing Bags.
www.discountmailingbags.co.uk

Plastic Mailing Envelopes
Visit this website to find out more about mailing bags and where to buy them. Featuring loads of information on polythene and eco-friendly mailing bags and a range of other polythene packaging.
www.discountmailingenvelopes.co.uk

Plastic Mailing Bag
A great website for any organisation who posts out a range of stock and wants to do so in a professional manner. Mailing Bags Direct lists common applications for mailing bags, so that you pick the right bag for your company.
www.mailingbagsdirect.co.uk

Mail Order Bag
A great website if you're looking to buy, or simply find out more information about, mail order bags. With details of a range of mailers, from blue opaque mail order bags to high impact silver mailers, this site is mailorder bag heaven!
www.mailorder-bags.co.uk

Ten things you didn't know about reclosable bags

Sealable freezer bags are a practical selection when fruit requirements to be frozen without losing also much quality. Loose berries can be spread on a tray first so they freeze separately, which stops them clumping into one solid mass and makes later portioning easier. Once frozen, the fruit can be packed into a bag, squeezed flat to remove excess air, and closed properly so freezer burn is less likely. That matters because dry, air-damaged fruit turns dull and tough, even if it still sees acceptable from outside the bag. A superb seal also assists retain freezer smells out, which improves flavour when the fruit is used months later.

packaging supplierble plastic bags work well for portioning cooked food because they retain small packs tidy, flat and easy to stack in the freezer. For dried products or batch-cooked beans, a superb seal assists slow freezer burn and stops loose bits from spilling amid handling, which matters when stock is being lifted, sorted and rotated through a packed kitchen or store room. The bag gauge requirements enough strength to survive filling, closing and repeated opening without splitting at the seam. That makes these bags a practical secondary pack where convenience and space-saving matter above a rigid container.

What A Novice Needs To Know About Economy Brand Handi-Loc Reclosable Poly Bags (8 In. x 10 In.)?

Reclosable poly bags earn their place in packing lines because they keep safe small products and still enable fast access after the first opening. A useful closure saves time when parts are counted out in stages, samples are checked, or products need to be repacked without wasting a fresh bag each time. This kind of packaging works optimal when the seal closes cleanly and the film has enough strength to survive handling in transit and on the warehouse floor. If the gauge is also light, split corners and weak seals soon display up. A bag that closes properly and stands up to normal use makes daily packing simpler and cuts avoidable waste.

Heavy duty grip seal bags work well when small parts need to be handled above once without the pack giving method. A thicker polythene suppliers gauge gives the seal a steadier bite, so the mouth closes properly each time instead of going wavy or losing grip at the edges. That matters in stores and on production lines, where bags are opened for counting, kitting or partial issue and then closed again for later use. The firmer film also copes better with rubbing inside crates and tote bins, so there is less chance of split seams, spilled contents and wasted time sorting loose components.

Specimen Bags

Biohazard specimen bags need to be specified for the proper conditions of assortment, not only for a list of products description. The bag has to cope with damp swabs, vials, labels and the rough handling that comes from moving through wards, vacutainers cupboards and courier cages, so seal quality matters as much as film gauge. A weak zip or poor weld can turn a tidy consignment into a pollution risk, while a bag with transparent labelling space assists samples stay traceable. Good bags also need enough stiffness for easy filling without splitting at the seams. A sensible specification reduces handling damage and cuts the chance of a rejected sample.

Slidergrip bags are often chosen when a pack requirements to be opened and closed again without losing control of the seal. The slider assists the closure stay aligned, which cuts the chance of a bag being left partly open and picking up dust, crumbs, or damp from busy handling areas. That advantage only grasps if the film has a proper gauge and decent melt flow through the converting process. If the material varies also much, weak spots and crooked seams beginning to appear, and operatours spend time clearing misfeeds instead of packing cleanly. A consistent specification retains the job moving and avoids preventable rejects.

Ziplite bags only work well when the film takes a clean path through the line and grasps its shape below speed. A light gauge may see efficient on a spec sheet, nevertheless if the web snags, wanders or folds badly, the result is stoppages, wasted film and unhappy machine minders. Soft polythene suppliers can curl at the edges and slip amid filling, particularly where cartons are being packed fast, so the proper test is how steadily it runs. A balanced building gives enough body for smooth feeding without turning the bag into a heavier item than necessary, which retains production moving at a sensible pace.

Hefty One Zip Slider Bags, Freezer, 1qt, 2.5 mil, Clear, 35/Box, 9 Box/Carton (R82235CT)

Zip slider bags in freezer grades suit chilled stock because they give a solid mix of protection and easy handling. A film around 2.5 mil has enough stiffness to cope with folded corners, tight carton packing and the knocks that happen in transit, without turning each bag into unnecessary additional plastic. The slider closure assists where cool conditions make fingers clumsy, since a firm close is easier to achieve than a plain press seal. That means less split seams, less spill risk and less time spent checking whether all bag has been shut properly on the packing line.

Zip seal bags work optimal when the closure is robust enough to keep safe the contents as well as grasp the pack shut. A decent zip retains smells in, stops light handling from spreading product, and gives better control than a loose fold or open-top bag when products are stored, picked, or packed for dispatch. The film gauge matters because thin material can feel flimsy and distort the seal, while a well-manufactured profile gives a cleaner close and less failures on the line. That is why the bag suits products that need both tidy presentation and proper containment.

Grip seal bags matter most when the closure works all time, not when the material sees tidy on a spec sheet. A small drift in film gauge, slip, or seal profile can turn a cost-effective bag into a nuisance at the select-face, where staff want fast opening, proper reclosing, and no fiddly failures on small parts or consumables. Good converting retains the strip aligned, the mouth square, and the bag stable enough for tidy case packing and sensible pallet builds. When those tolerances slip, secondary packing rises and handling damage follows. That is why buyers often value consistency above a marginal saving on resin weight.

Research & Resources

For more information on mailing bags and the different types available, plus details of how poly mailers are manufactured, please visit:

Goldstork: A free directory listing the best of the web, featuring carefully selected information on and websites specialising in mailing bags.

PlasticBags.uk.com: Free online directory specialising in polythene packaging. Contains useful articles and other resources, including a list of top mailing bags websites.

PackagingKnowledge: Read detailed information about mailing bags on this in-depth website dedicated to polythene packaging.