Sealing & resealing bags

Buy from an extensive range of sealable and resealable bags, including grip seal bags, zip seal bags and self-seal bags.

Sealing and resealing bags are...

• Reusable polythene bags that can be opened and closed
• Designed for multiple use - open and close as many time as you like!
• Bags that can be sealed by a variety of means, including self-seal bags

Self-seal bags are...

• Manufactured with an integral sealing strip, located along the bag opening, to allow for easy opening and closure
• Also known as minigrip bags, mini-grip bags, gripper bags, grippa bags and resealable bags
• Ideal for securing bag contents and avoiding leakage or contamination
• Available in a variety styles to suit a range of uses, from storage bags to carrier bags
• Available in clear polythene with or without labels - to make a note of bag contents and help retrieval
• Available in variety of coloured opaque polythene - e.g. red, green, blue or black - to help with item storage and colour-coded retrieval
• Also available in more specialist polythene, from heavy duty grip seal bags to anti-static grip seal bags
• Sometimes referred to as zip seal bags. However…

Other people's thoughts on polythene bags

Mailing bags need to be matched to the item and the journey, not only chosen for low material use. A thin film may see tidy and retain carriage weight down, nevertheless if the gauge is also light or the seal line is weak, sorting belts and stacking at depot level soon expose the problem. Corners, edges and awkward shapes put additional strain on the film, so a tougher polythene suppliers, kraft-lined or polypropylene bag often gives safer protection without moving up to a carton. That selection assists products reach despatch intact and avoids the cost of damaged returns.

Carrier bags perform well only when the material, thickness and shape are chosen for the job, because a bag that sees simple can still fail below load if the film gauge or handle design is off. A stiffer high-density polythene suppliers version often stacks neatly and carries less dead weight through the supply chain, while a more flexible low-density blend normally copes better when boxes scrape against it or the load has sharp edges. The proper test is not appearance nevertheless how the bag behaves on the shop floor and in transit. A sensible specification assists prevent split handles, wasted stock and awkward complaints at the counter.

Plastic bags used as primary industrial packaging can drop outside normal retail restrictions when they are filled at origin and stay inside the production chain rather than appearing as counter stock. That matters because the bag is part of the process, not a shopper-facing carrier, so its job is to keep safe product, retain pollution down and make handling easier amid storage and dispatch. Warehouse teams still need to control where these bags proceed, because once the same format turns up loose at a counter or complimentary issue point, the exemption no longer makes sense. Clear identification on the print assists trace the pack back through the supply chain and reduces confusion at products-in. Tight control at origin is what retains the exemption workable.

Polybags: transparent poly bags

packaging supplierble transparent poly bags give packers a straightforward method to retain small products visible while protecting them from dust and handling labels. The transparent film lets a picker or shop worker check the contents without opening the pack, which saves time on the floor and cuts the risk of mixed stock. The reseal strip adds a second use, so the contents stay tidy after opening and can be handled again without loose parts spilling out. That makes them useful for spare components, stationery, garments, and other items that need tidy presentation and fast access. A well-manufactured bag with the proper gauge also reduces split seams and avoids wasted rebagging.

Clear polythene suppliers bags assist maintain control where products need to remain visible nevertheless protected amid handling and storage. The transparent film lets warehouse staff check count, orientation and product condition without breaking the pack, which reduces unnecessary opening and repacking on the floor. That matters when items are fragile, awkward or easy to scuff, because all additional touch raises the risk of damage or pollution. A uniform gauge and a clean seal also give the bag enough grip on the contents to retain them proper. The result is less waste, quicker receipt checks and less avoidable errours in the dispatch chain.

Poly bags

Moisture-resistant poly bags assist retain products stable when humidity is part of the journey, particularly in warehouses, vans, and damp storage areas where condensation can quickly spoil a clean pack. Film selection matters because a bag that sees fine on the bench may still let in enough moisture to affect paper labels, rust-prone components, or any product that does not like damp handling. The proper bag also protects the appearance of the pack, which matters when products sit in stock for a while before being picked. A modest upgrade in bag spec can prevent a lot of avoidable waste and rework.

Shop > polythene suppliers PRODUCTS > polythene suppliers Bags

polythene suppliers bags normally sit at the core of stock control because they transport through a warehouse faster and more predictably than more specialised formats. Their gauge is generally proper, the film behaves in a familiar method on the fill line, and pallet building is simpler when the pack style does not transport additional properties. That makes them a superb baseline for select-face planning and consignment flow, particularly where high-volume orders have to be turned round without slowing dispatch. When a line runs smoothly, the stock record tends to follow the process rather than fight it, which retains the bread-and-butter item easy to handle.

polythene suppliers sacks are a poor selection for storing freshly dug second early potatoes because the film traps moisture and encourages sweating. Once the potatoes have been lifted and allowed to dry, they still transport field moisture on the skin, and a sealed plastic sack retains that dampness close to the crop. That quickly creates a soft, humid environment where rot can spread through a consignment. Paper or hessian enables the crop to breathe and sheds surplus moisture far better. For short-term holding in a dry, ventilated store, breathable packaging gives a safer result and reduces losses before the potatoes reach the packhouse or kitchen.

Medium duty layflat tubing gives a packing line a tough, flexible method to make robust polythene suppliers bags to the proper size. The material stands up well to rubbing, snagging and rough handling, so it suits products that would damage thinner film or normal bags. Because the bag length is cut only when needed, waste is reduced and awkward oversised sacks are avoided. That also assists when packing mixed consignments, where one fixed bag size would leave also much slack or force poor sealing. A clean cut and a proper seal turn the roll stock into a tidy, proper bag that protects the contents without slowing the job down.

Coloured polythene suppliers bags are often treated as plain secondary packaging, yet their pigment and gauge can have a direct effect on how they perform in storage and handling. A lighter film normally bends and stretches more easily, while a thicker extrusion gives better resistance to snagging, splitting and rough picking at the warehouse face. That matters when bags are moved in bulk, because tidy stacking retains stock rotation simpler and reduces damage amid dispatch. Colour also assists operatours identify product lines quickly, which cuts mix-ups when several bag sizes are sitting on the same pallet. The practical point is simple: a bag that sees normal on paper can save time and losses if the specification matches the job.

Zip seal bags are…

• Manufactured with a metal zip fastener or zip seal, making them…
• A more premium bag than a grip seal bag
• Used for storing important documents, such as art portfolios or school project work
• Ideal for use as a wallet for conference delegates or for exhibition attendees
• Also known as zip bags, ziplite bags or zipper bags

Sealable, resealable and self-sealable - there's more than one way to seal a bag

Sealable bags

Any plastic bag that can be sealed shut can be described as a sealable bag.

The sealing process can be carried out by any means, including a bag tie or clip (e.g. a sandwich bag with a twist tie), an adhesive strip, either external (e.g. sealing any bag with cellotape) or internal (e.g. as with a mailing bag), an internal self-seal strip (e.g. as with a minigrip bag) or by heat sealing with an external sealer (e.g. as with vacuum bags).

So any plastic bag that is designed with a seal can be called a sealable bag. However, not all sealable bags can be called resealable bags.

Resealable bags

Only bags where the seal can be reused can be classified as resealable bags. Some bags, such as mailing bags, feature a single-use seal that can't be reused without tearing open the bag itself and thus rendering it useless. Mailing bags are a very convenient way of sending post - thanks to their integral adhesive seal - but, because their seal is strong enough to keep the mail contents secude until the bag is cut or ripped open by the recipient, then a mailing bag is not a resealable bag, although it is a sealable bag.

Self-seal bags

Not every sealable bag be called a self-seal bag. This monicker is reserved only for bags that can be sealed closed without using any external sealing accessory - including adhesive tape, clips or bag ties - and without the use of a heat sealer to melt the polythene and seal the bag.

The most popular types of resealable bags are grip seal bags. These bags, which are sometimes known as mini-grip bags, gripper bags or grippa bags, feature an integral seal that runs along the top of the bag.

The seal contains a male (single) and female (double) ridge of plastic on opposite sides of the bag opening. When the seal is squeezed gently between thumb and forefinger, the male ridge fits snuggly into the female ridges to close the bag. This seal protects the contents of the bag from moisture, dirt and other external contaminants.

It can be used over and over again, which means the grip seal bag is a sealable bag, a self-seal bag and a resealable bag.

This handy bag is available in a huge range of sizes, made from clear, coloured or black polythene, with or without labels to make handy notes on the bag and with specialist options including antistatic bags - to keep electrical components safe - and specimen bags with accompanying record cards - perfect for hospitals, doctors' surgeries and police stations.

Methods of sealing plastic bags

The most common ways of sealing a polythene bag are by:

Sealing the bag with ties or clips. Fasten any bag shut with a plastic clip or twist shut with a tie. A popular method of sealing food bags for domestic use (e.g. clip a packet of frozen peas shut before placing in freezer, twist a sandwich bag closed for a packed lunch etc.)

Sealing the bag with a built-in adhesive flap. Some bags such as mailing bags are manufactured with a flap opening, where the flap contains a built-in adhesive strip attached along its length. Simply remove the cover from the adhesive and press the flap down to seal.

Sealing the bag with a built-in grip or zip seal. A range of bags are available with an integral strip that seals shut either by squeezing the seal together (grip seal) or pulling closed (zip seal). Very handy for regular use as they can be used over and over, these bags also provide great protection from moisture, dirt etc.

Sealing the bag with a heat sealer. If you really want to seal your bag shut tight this is the method for you. A heat sealer will bond two pieces of plastic when placed together in the sealer and the sealer is closed shut. A one-time seal, this method of sealing bags is popular for vacuum packing food.

Where to buy sealing and resealing bags

Resealable bag manufacturers and suppliers include:

Ziplock Bags
The home of ziplock bags online, this website features everything you need on ziplock, zipper, ziplite, grip seal and all self-seal bags. With a huge range of products at great prices and free delivery within the UK, this is the number one ziplock website out there.
www.ziplockbags.co.uk

Self Seal Bags
Specialists in self-seal bags, this website stocks a huge range of resealable bags from grip seal to mini grip and ziplock to ziplite. Packed with loads of useful information to help you choose the right bag for you, with free delivery to UK addresses.
www.self-seal-bags.co.uk

Plastic Self Seal Bags
Discount Self Seal Bags is the place to go to get resealable plastic bags at discount prices. Also features loads of useful information on self-seal bags, including a handy buying guide to make sure you pick the right sort of resealable bag for you.
www.discountselfsealbags.co.uk

Minigrip Bags
A website loaded with information on minigrip bags - aka grippa bags - and all types of self-sealing bags, with list of the best places to buy them online. Features a useful guide to anti-static self-seal bags, what they are used for and how they work.
www.minigrip-bags.co.uk

Zip Seal Bags
Zip Seal Bags contains loads of great information on zip seal bags and other types of self-seal polythene bags and eco-friendly alternatives. It also features a handy list of online zip seal bag retailers.
www.zipsealbags.co.uk

Antistatic Bags
Antistatic bags is the number one website dedicated to antistatic bags. Containing a wealth of information on antistatic packaging and how it works, along with details of where to buy it at the best possible prices.
www.antistatic-bags.co.uk

Resealable Bags
Resealable-Bags is a division of Polybags Ltd, the UK's number one polythene manufacturer, that specialises in resealable bags. Offering an unrivalled range of resealable bags and other polythene packaging at the best prices online.
www.resealable-bags.co.uk

Some common views on polythene bags

Mailing Bags

Printed mailing bags work optimal when they are treated as a light nevertheless proper outer pack, not only a cost-effective wrapper. A superb print can transport dispatch details, branding, and return information without adding labels or additional inserts, which saves time at packing stations and retains the package easy to identify. The bag still has to do the hard work, though. If the film gauge is also low, seams can fail below rough handling; if it is also heavy, material cost rises without improving performance. A secure seal assists also, because it reduces the risk of tampering and retains the package intact through sortation and delivery.

A small charge has changed carrier bag use more effectively than most shop-floor reminders, because even a cost-effective item stops feeling complimentary once it appears on the receipt. That has cut the number leaving tills and eased pressure on stores, where bag stock once took up space and was awkward to manage as a fat, low-value line. Fewer bags also mean less emergency top-ups from distribution, which saves vehicle space for products that matter more. The result is a calmer flow of stock and a simpler ordering pattern for branch teams.

Most countries are taking the threat of plastic pollution seriously. According to a Polybags, 127 countries had implemented a few type of policy regulating plastic bags by July 2018.

Plastic bags are often treated as a simple checkout item, yet even a small charge can change how people handle them and how much waste reaches the home and the waste stream. When a bag is left complimentary, it is easy for it to be taken without view, used once, and dropped into normal waste or blown away if the contents are light. A modest levy tends to push shoppers towards reusing bags or refusing extras, which reduces giveaway volume and cuts handling, storage, and disposal pressure at store level. That kind of measure works optimal when paired with transparent recycling routes, because a charge alone does not fix the material problem.

Clear poly bags in the 8-inch spectrum suit light retail and secondary packing because they grasp small items neatly without adding much weight or bulk. That makes them a practical selection for greeting cards, printed packs and mixed assortments that need to stay together nevertheless still be easy to handle. The size is big enough to give protection and retain products contained, yet not so generous that additional air and film take up needless room in cartons or on pallets. In packing areas, that balance assists retain loads tidier and reduces wasted storage space, which matters when throughput is tight.

Stronghold Clear polythene suppliers Bags

Clear polythene suppliers bags work optimal when the film gauge matches the handling they will face on the packing bench and in transit. A 100 gauge specification often gives a sensible middle ground: light enough to open quickly, nevertheless robust enough to cope with normal filling, sorting and stacking without tearing at the seal or the fold. Go also thin and the bag can snag on sharp edges or split amid routine use; proceed also heavy and it becomes stiff, slowing the line and making loading more awkward. A well-chosen gauge retains packers moving and reduces waste from rejects.

Colored Poly Bags

Poly bags work optimal when the grade, thickness and closure match the product being packed. For apparel, a coloured bag can lift presentation and assist with fast sorting on the packing line, while a self-adhesive flap gives a tidy stop without additional fasteners. Where garments need a small protection in transit, a bubble-lined or reclosable style can reduce scuffing and retain returns or exchanges easier to handle. The proper point is that the pouch has to suit the item and the job, not only see tidy on the shelf. A poor match wastes labour and can create handling damage before the package even leaves dispatch.

polythene suppliers bags cause trouble because their lightness makes them awkward in proper retail operations, even before waste rules enter the picture. They take up more space than they appear to, flap about in stockrooms, and can slow down picking when loose sacks drift across a tidy bay or acquire mixed into other packaging. Once used, they are easily contaminated by receipts, labels, food residue or normal waste, which knocks them out of clean recycling streams and leaves staff with a mess that is harder to sort than it sees. The practical reply is better control of issue, storage and return routes, not pretending the film will disappear on its possess. A bag that is managed properly is still a material asset; one that is left to wander becomes a waste problem.

Bare root hedging requirements proper containment straight after lifting, because fine roots dry out quickly and lose value before planting even starts. Black polythene suppliers sacks assist by shutting out light, reducing moisture loss and keeping the root ball protected amid loading, storage and onward transport. The normal should be fresh stock from the ground, packed without delay and moved through the supply chain with care, not left exposed on a yard or in the back of a lorry. That retains the plants in saleable condition and avoids avoidable losses from desiccation or bruising.

Soft products transport better in robust polythene suppliers bags than in cartons when the product requirements to stay compact and protected. Bedding, towels and soft toys do not have rigid edges, so a bag can mould around the shape and remove wasted space that a box would leave behind. That brings proper benefits in packing speed, pallet fill and freight use, because loose air is not being shipped around the country. A well-chosen gauge also assists resist splits and scuffing amid handling. Used properly, this sort of secondary packing retains soft items tidy and easier to stack without carrying unnecessary board weight.

Send enquiry to Business Advantages of Coloured polythene suppliers Bags

Coloured polythene suppliers bags are chosen as much for handling performance as for appearance, and the film grade makes a noticeable contrast once they reach the warehouse floor. A higher-density material gives a firmer bag with tighter gauge control, which assists when pallet layers need to stay compact and predictable in transit. Softer blends can cope better with awkward shapes and repeated handling, nevertheless they may stretch more and lose tidy stacking if the load is rough. Colour is not only a dressing selection either, because pigment can alter opacity, slip and seal response. If the gross balance is specified, bags become harder to open, slower to pack and more likely to create waste on the line.

Research & Resources

For plenty more information on sealing and resealing bags, including the manufacturing process, types of self-seal bags available and their many uses, please visit:

PlasticBags.uk.com: Browse through a huge range of self seal bags websites or, if you are a manufacturer, list your products for free on this online directory specialising in self seal bags and other plastic packaging.

PackagingKnowledge: The UK packaging industry's number one website contains huge amounts of information and in-depth articles on self seal bags.

Goldstork: This free online directory features specially selected information and hand-picked features on a range of self seal bags and resealable bags.

What is static electricity?

Every object in the world - ourselves included - is made of atoms, which are in turn made of protons, neutrons and electrons. While neutrons have no charge, protons are positively charged and electrons are negatively charged.

In normal circumstances, the number of protons and electrons in an atom balance each other out, meaning that atoms have no charge. However, when two items rub together or separate, the electrons contained within these items can move from atom to atom or even from item to item, thus giving the atoms a positive or negative charge.

If the items involved in this situation are made from a material that does not conduct electricity - an insulator - then this charge can not move. The result is static electricity.

How do antistatic self-seal bags work?

If any static electricity comes into contact with an antistatic self-seal bag, rather than pass through the bag and risk damaging the electrical components inside the bag, the electricity passes around the bag and dissipates before it can make contact with the components, thus removing the possibility of damage.