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Shrink-Film.co.uk is a specialist website from Polybags.co.uk - the UK's number one polythene packaging manufacturer - dedicated to shrink film, shrink bags and shrink wrap.

Polybags produces and stocks a fantastic range of shrink wrap products, including shrink wrap, shrink pallet covers, shrink kits, heat sealers and shrink guns. To support this, we bring you a wealth of information on shrink wrap products - see our homepage or the 'Shrink wrap systems' section below for more information.

What the web says about shrink wrap kits

Export of Shrink Bags

United Kingdom has imported Shrink Bags products worth of 1,350.63 USD Million in last 10 years. In this duration, 2018 was the year when United Kingdom imported Shrink Bags products with 143.71 USD Million import value. Top ports in United Kingdom for importing Shrink Bags are BOMBAY AIR CARGO, while destination ports are United Kingdom,

For instance, buying shrink wrap kits for all your windows can make a big contrast, particularly in the certainly drafty areas of your home. Sealing out the drafts can assist the room stay warmer, allowing you to dash the heating system less often.

Shrink pallet covers sit in that unglamorous nevertheless technically fussy corner of transit packaging where film chemistry, load geometry and warehouse handling all meet; a cover manufactured to specific specification is not merely a loose hood above stock, nevertheless a controlled polythene suppliers envelope defined by gauge, gusset, layflat width and shrink response. For export-prepared or long-dwell consignments, the contrast between a cover that drums, tears or creeps below tension and one that stays seated through fork movements often comes down to melt-flow consistency, micron-specific gauging and the balance between puncture resistance and controlled contraction below heat. Non-shrink formats have their place on select-face stock and short-term storage, where speed of application and re-entry matter above tight unitisation, while shrink variants improve pallet stability by drawing strange cartons into a more coherent load without adding excessive tare weight or sacrificing volumetric efficiency. Additives can be specified to manage UV exposure, slip, anti-blocking or surface resistivity where static-sensitive products are involved, though all additive has to be judged against recyclability and reprocessing behaviour. The better technical conversations now extend beyond simple protection from dust and moisture; they think secondary bagging reduction, mono-material recovery streams, feedstock traceability and the amortised energy tied up in each cover, because a heavy-gauge hood that survives the journey may still be poor engineering if it overburdens the waste stream or disrupts baled film quality at the back stop.

Shrink wrap film sits in that unglamorous nevertheless revealing corner of packaging where polymer science, warehouse discipline and margin control meet. Demand is not driven merely by volume on a balance sheet; it is shaped by down-gauging programmes, melt-flow consistency, puncture resistance at the pallet edge, and the quiet pressure to retain load containment credible without adding needless tare weight. A film specified a few microns also light will chatter through a heat tunnel, split on strange stock or relax amid transit; one specified also heavily wastes resin, compromises volumetric efficiency and weakens the sustainability case at procurement level. The better polythene suppliers structures now lean on tighter extrusion control, balanced shrink ratios and managed surface resistivity, particularly where high-speed lines, mixed consignments and secondary bagging create static and sealing variability. Circular economy expectations add another layer: mono-material formats, recycled-content trials and feedstock provenance are being weighed against clarity, dart impact and machine tolerance, rather than treated as separate ethical decoration. The market's growth prospects so sit less in big consumption figures than in the operational details less rejected pallets, cleaner select-face presentation, improved cube utilisation and films that can transport through recovery streams without turning the baler into a sorting argument.

Shrink film packaging sits at the awkward junction between print discipline, polymer science and warehouse pragmatism: a sleeve or collation film has to transport graphics cleanly through heat, abrasion and handling, while still behaving predictably on high-speed lines where a small drift in melt-flow consistency or micron-specific gauging can cause dog-ears, web smashs or poor shrink recovery. The better converters treat polythene suppliers and related shrink substrates less as commodity wrap and more as engineered stock, balancing high-density polymer chains, slip levels and surface resistivity against the realities of pallet stability, volumetric efficiency and the tare weight impact that procurement teams increasingly scrutinise. Static build-up, often dismissed as a nuisance, becomes a pure production brake when light-gauge film clings amid secondary bagging or misfeeds at the select-face; anti-static treatment and controlled corona levels mitigate that without compromising ink anchorage or seam integrity. Circularity adds another layer of constraint. Mono-material structures facilitate cleaner recycling streams, yet downgauging cannot be pursued blindly, because a film that fails in transit merely transfers waste from the packaging ledger to the damaged-stock ledger. The competent specification is so a negotiated one: enough tensile strength for distribution, enough shrink force for presentation, enough print stability for shelf recognition, and enough feedstock discipline to retain the all exercise credible beyond the converting hall.

  17974 Shrink Packaging Machine Suppliers and Exporters

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Marine / Industrial Shrink Film

Your Shrink Wrap Options

The other style of shrink wrap does not use heat.   The shrink wrap (also called plastic wrap) is used along with a firewood bundler. Once the firewood is loaded into the bundler, the machine tightly wraps the firewood creating a nice tidy bundle.

Shrink FIlms

A cross-linked shrink film with anti-fog properties developed particularly for fresh manufacture and other

POF Shrink Film Manufacturers. Polyolefin Shrink Wrap Suppliers in United Kingdom. From being the first manufacturers of POF Shrink Film in United Kingdom to

Polybags' main product categories

But shrink wrap is just part of the offering from Polybags, who produce a massive range of polythene products, including polythene rolls and bags available off-the-shelf in their millions, whilst you can custom-design much of our range and print it with your very own logo. Here are just a few of the main product categories that Polybags has to offer:

Shrink wrap systems

Want to learn about the different types of shrink wrap systems? Well you've come to the right place. Here are the most popular kinds of shrink wrap systems available today.

Straight bar sealers - A straight bar cuts and seals the film manually. For low volume applications.

L-bar sealers - An L-shaped bar used to cut and seal shrink film. Averages between 0-40 packages per minute, depending on automation level (e.g. manual, semi-automatic, automatic, automatic continuous). Also known as: impulse sealer, sealing system, sealing equipment, L-sealer, L bar sealer.

Sleeve wrappers - Designed to wrap trayed or loose collated items. Mainly used in shipping applications. These shrink wrap systems often replaces corrugated boxes and other types of packaging that are costly and need more space to use, store & dispose of. Also known as: shrink bundler, shrink wrapper, heat wrapper, sleeve shrink equipment, sleeving system.

Form fill seal shrink wrap equipment - The ultimate shrink wrapper, designed for high speed shrink packaging applications, averages between 30 -100 packages per minute on a continual basis. Most applications use polyolefin shrink film / industrial shrink wrap film.

Heat shrink wrap systems

Shrink tunnels - The final step in shrink wrapping. Package is passed through the shrink tunnel. Once inside the zone of the tunnel, it is subjected to increased levels of heat and turbulent air flow. A quality tunnel is capable of producing the required amounts of heat and air flow to cause the film to shrink around the introduced package. Also known as: heat tunnel, shrink film tunnel, shrink wrap tunnel and shrink heat tunnel.

Heat guns - Hand held tools that blow hot air to manually shrink film. Low volume output.

Shrink film sealing systems

Until recently, most sealing systems used a hot wire in order to seal and cut-off the film at the same time; now, a knife system has gained in popularity on many models due to its durability.

The wire or knife seals the film against a pad, covered with Teflon tape to protect the pad. Time, temperature and pressure are the three most critical elements affecting the seal quality. If the sealing head is not held on the film long enough, the temperature is too low, or the pressure is insufficient or uneven, the seal quality will be poor and/or won't cut.

However, if the sealing temperature is too high, the film may break just behind the seal. Following the impulse-sealing cycle, a cooling cycle allows the film to solidify into a solid seal. This dwell-time is critical in order for a seal to hold.

PVC films require only heat in order to cut seal and cut. When run on a sealing system as previously described, buildup of carbon char (black specks and flakes) will occur. This needs to be cleaned from the sealing head on a regular basis, otherwise the carbon will interfere with the sealing process and will look unsightly on the sealed ends of the package.

Since only heat is needed to form a PVC seal, some machines use a hollowed out bottom plate instead of the foam pad; direct contact with the seal wire is eliminated. Other systems employ a much thinner nichrome wire (.020" diameter vs. a standard .036" to .040" for polyolefins) against a hard bottom sealing pad. This system is insufficient to create strong polyolefin seals.

One other sealing system designed for PVCs is called a universal sealing system. Despite the name, the hot knife is typically too sharp to form a quality polyolefin seal. A rounded knife is better suited.

Shrink film shrinking systems

In order for proper shrinking to take place, polyolefin films need an air evacuation hole or multiple perforations. A bag formed with PVC film does not need 'artificially created' air escape holes. Because of the make-up of PVC, the seal typically is full of small pinholes; this is where the air escapes during the shrinking process. While this may seem advantageous (a step can be eliminated), the small holes actually weaken the seal area. These holes are often located near or in the package corners.

In order for proper shrinkage to occur, polyolefin film must be exposed to the correct temperature for the correct amount of time (which is controlled by conveyor speed), and also be surrounded by the correct air velocity, or wind turbulence. The air allows the film to stand away from the product, and a 'bubble' is formed around it. A good, even shrink should result when this occurs.

PVC films shrink readily when exposed to heat, and therefore air velocity is not critical. In the marketplace there are low-end tunnels which have no settings to control air velocity (similar to an oven) and you may find it difficult to achieve a good shrink.