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…

Common uses for waste bags

Heavy Duty Black Sacks 18x29 (x200)

Heavy duty black sacks only work well when the gauge matches the waste being thrown away, because a bag that is also light will fail the moment sharp offcuts, damp waste or awkwardly shaped scraps start to load it up. The smaller 18x29 format suits compact bins and busy back-of-house points, since a close fit assists the sack sit properly instead of slipping down into the container and making emptying harder. Black film also retains mixed waste out of sight, which assists shared work areas see tidier between assortments. A stronger sack with a decent tie-off saves time and reduces messy spillage later.

One Off Joblot of 16 Packs of 20 Flat Top Compostable Biodegradable Bin Liners

Biodegradable bin liners only prove their value when they can handle the rough mix found in a proper bin, not only tidy trial waste. Carton corners, damp food scraps and the scraping load of the rim all work the film in alternative methods, so an even gauge matters far above a glossy roll sample. If the material is also brittle, the liner will split at stress points; if it is also soft, it stretches and loses shape before the bag is full. A clean seam and proper film control make the contrast between a liner that grasps together and one that leaks at the worst moment.

25 Extra Large Woven Polypropylene WPP Sacks Strong Rubble Bags Size 65 XL

Rubble bags need enough size and strength to cope with the rough, awkward waste that comes out of demolition and strip-out work. A woven polypropylene sack in a generous format gives room for broken brick, plaster, mortar dust and timber offcuts without forcing the load into a shape that stresses the seams. The woven structure matters because sharp fragments shift as the bag occupies, and a weak sack will split long before the job is done. Good base sealing and the proper gauge also assist when sacks are tipped, dragged or stacked in a rush. A bag built for site conditions saves time and avoids avoidable spillages.

Trade Waste Sacks

Trade waste sacks only pay their method when the film is tough enough to cope with rough mixed waste without adding needless tare weight. A sack that sees fine on gauge can still fail if the polythene suppliers blend has poor chain distribution or uneven melt flow, because sharp offcuts, damp residue and compacted waste exploit weak spots very quickly. Good production control matters here: consistent seal quality, proper film tension and the proper dart impact performance retain sacks intact through filling, lifting and transport to the compactor. When the spec is judged properly, less splits mean less leakage, less re-bagging and less interruptions on the shop floor.

ROTA Standard Rubbish Bags

Drawstring waste bags save time because the top can be closed quickly without the fiddly twist-and-knot routine that often slows waste assortment. That matters in busy back-of-house areas where bins are emptied repeatedly and waste has to transport fast from workroom to skip or wheelie bin. A simple pull top also leaves less chance of split liners or loose contents spilling when the bag is lifted and carried. The optimal result comes with fairly even film strength through the bag body, so the closure speed is not wasted by a weak gauge that tears below load. A well-manufactured drawstring retains the job tidy and cuts down on avoidable handling trouble.

The Green Sack medium-duty waste sacks black 965 x 737 mm (h x w) 10 kg capacity 200 per box

Refuse sacks manufactured from 100% recycled material can handle daily waste without adding unnecessary packaging cost or additional virgin plastic. A medium-duty sack is often the sensible middle ground in warehouses, stockrooms and back-of-house areas, where light liner film tears also easily nevertheless heavyweight sacks are more film than job. Good gauge control matters because thin spots lead to splits at the gross moment, particularly when mixed waste has sharp corners or damp contents. If the sack is consistent, waste transports out cleanly and staff spend less time dealing with mess.

Bin liners

Plastic bin liners may seem like a tidy method to handle waste, nevertheless they often create more problems than they solve once the bag is full and sent away. Thin plastic can split on sharp scraps, wet waste makes matters worse, and the all load can become awkward to transport without spillage or additional double-bagging. Reusing carrier bags for waste is no better, because they are normally also light for the job and still add to the plastic stream once discarded. A firmer come is to reduce loose plastic at origin and use liners only where the waste route justifies them. That retains handling cleaner and cuts down on disposable material going straight to landfill.

'Where's Samantha?': Guider's 80 steps to freedom clutching black bin bags

Black bin bags need to be specified for proper handling conditions, not only for a tidy appearance on the roll. The low-cost black film has to cope with mixed waste, awkward corners and rough warehouse treatment, so gauge selection and puncture resistance matter as much as colour. Push the material also thin and split bags soon create additional labour, double-bagging and complaints about leaks; make it also heavy and pallet space, transport efficiency and stocking costs all suffer. A superb bag opens properly, settles round the container and survives a knot or seal without tearing, which is why resin selection and film consistency affect the job as much as the finished see.

Black sacks are often used where a wheeled bin is awkward to place or transport, nevertheless the proper issue is not convenience so much as control of volume and handling. A sack system has to match the waste load of a small container without creating additional stops, overfilled rounds or awkward lifting for operatives. The material matters a big offer here, because a thin film with poor puncture resistance can split as soon as wet waste or sharp offcuts settle into it. Once that happens, litter spreads, assortment slows and the all load becomes harder to manage at the depot.

Waste bags need to be robust enough to cope with awkward handling as well as the apparant job of collecting pet waste. A thin film that splits in the hand or along the seam quickly creates a mess and a complaint, so gauge selection and seal quality matter above plenty buyers realise. In a public setting, bags are often grabbed quickly from a dispenser, stuffed into a pocket, then used in inferior weather or in a rush. A well-chosen polythene suppliers bag with decent tear resistance and a tidy roll format reduces waste, cuts nuisance at the point of use, and retains the job straightforward.

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

What people are searching for about waste bags

Heavy duty black sacks need the proper gauge if they are expected to survive the knocks of warehouse and waste-room handling. A 42mu film gives a better margin against splits than a lighter sack, so it stands up more reliably to mixed waste, sharp offcuts, broken strapping, and strange shapes that dig into the film. The additional strength matters when sacks are pulled from a bin, filled hard, lifted by the neck, and tied off below strain, because disadvantage tends to display first at the seams or around the top. Fewer tears mean less spillages and less time wasted clearing up. That retains the waste stream below control and stops a simple disposal job turning into additional labour.

Biodegradable bin liners need to be judged by how they grasp waste, not by the claim on the carton. In a kitchen or back-of-house bin, the film faces wet peelings, small bones, mixed packaging and repeated movement as the bag is lifted and dragged to a larger container. That puts the focus on gauge consistency, seam strength and puncture resistance, because a weak liner soon tears at the base or neck and leaves a mess on the floor. A better specified film retains the load contained without forcing staff to double-bag all.

Rubble bags have to withstand far more abuse than their plain appearance recommends, because garden waste, wet soil, and rough offcuts quickly punish a weak film or poor seam. A bag that is also light may see tidy on the shelf, nevertheless once it is filled with damp debris and dragged across a rough surface, splits soon appear and the load ends up on the ground. Stronger gauge material, decent stitch or heat-seal quality, and a shape that takes weight evenly all assist reduce handling damage. That makes assortment cleaner and lifting less awkward, particularly where spoil is being moved repeatedly across a site.

Purchase of green waste sacks

A waste sack has to cope with rough treatment long before it reaches the client, so strength at the seam matters as much as the body film itself. Damp grass, sharp hedge cuttings and overfilled loads all put strain on the bag, and weak gauge control soon shows up as splits in handling or on the assortment round. A mono-material build gives a cleaner recyclability profile, nevertheless it also assists retain production steadier because the melt behaves more predictably through the converting line. That makes it easier to grasp a consistent micron rating and avoid thin spots that cause failures later. A sack that survives depot handling saves time, waste and complaints in the field.

Rubbish bags stop small waste from turning into floor clutter, and that matters in busy packing and warehouse areas where scraps build up fast. Food residues, slivers of board, pallet wrap offcuts and broken straps are easier to manage when they are gathered in one place instead of left loose on the deck. Bag strength has to suit the sort of waste being thrown in, because thin film can tear on sharp board corners or hard plastic ties. A bag that fails early creates additional cleaning, a poorer working area and more handling damage risk. The proper gauge retains routine tidying below control and makes the waste point far less troublesome.

Refuse sacks matter because loose waste is awkward to handle and more likely to split, spill or cause a mess amid assortment. Bagging household waste before it goes into a wheelie bin or similar container retains the load tidy, makes lifting easier and assists the crew deal with it quickly at the kerbside. Standard-size sacks are a sensible selection because they fit the normal assortment process without bulging or forcing the container open. That reduces the chance of handling damage, unpleasant leakage and delays at the point of pickup.

What makes our Compostable Bin Liners so superb?

Bin liners have to survive proper handling, not only sit in a bin, so the material selection matters as much as the environmental claim. A compostable or plant-based liner requirements enough gauge, stretch and seam strength to grasp mixed household waste without splitting when the sack is lifted, tugged or tied off. If the film is also thin, it tears around sharp edges and damp food waste; if it is also heavy, it becomes awkward and wasteful. Good liners also need proper roll perforations and a consistent seal so filling and disposal stay simple. When the specification is proper, the change in routine is small and the result is cleaner waste handling.

See when your blue bin bags will be delivered in Wokingham borough

Blue bin bags have to survive rough handling in storage and at the kerbside, so the proper job beginnings with the film, not the colour. A bag that sees fine on a roll can still fail if the gauge is uneven, the seal line is weak, or the polythene suppliers blend has been pushed also far towards thinness to save material. In a warehouse, those faults display up as split outers, poor pallet stacking and awkward rolls that do not dispense cleanly. Good production control retains the film consistent enough to transport mixed household waste without spreading tare weight also far. That sort of balance makes the bag efficient without turning it into a weak link in the assortment chain.

Black sacks suit bottle-top assortments because they grasp light, awkward parts together without adding much dead weight of their possess. That matters when loose closures have to be moved, counted and stacked as a warehouse load rather than treated as a token donation. The dark film also conceals the contents, which assists retain the bags tidy on the floor and reduces the chance of casual rummaging. Cheap-looking packaging is not the point here; a sack that cinches well, stands up in a pallet bay and stays intact through a few lifts saves a lot of handling trouble. A sensible fill pattern and decent film gauge make the contrast between a stable consignment and a spillage headache.

About Waste Bags

Waste bags for dangerous material must be chosen with the stop disposal route in mind, not only the type of waste going inside them. In a care setting, a red clinical sack may suit contaminated items, nevertheless it also brings a assortment constraint because only authorised contractours can take that stream away. That means the warehouse, caretaker or facility buyer has to match bag specification to the waste method already in position, or the sacks become an awkward item that cannot legally leave site. A normal waste bag is often the safer option for mixed domestic waste, since it avoids confusion and reduces the risk of gross stock being issued.

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.