Welcome to polydirect.co.uk your place to find how to make your own custom sized bags using shrink sheeting and layflat tubing. We also provide direct links to the best shopping pages from the best polyethylene and polythene UK manufacturers for both making shrink film and shrink bags and for making bags from Layflat tubing (LFT).
Quick link: UK Manufacturers Layflat Tubing shopping page.
LFT (Layflat Tubing) is a continuous tube of polyethylene on a roll. Layflat tubing is ideal for packaging long and 'difficult to wrap' items. Insert the item to be packaged into the plastic tubing and cut it to the required length then heat seal, tie, staple or tape shut both ends to create good protective made-to-measure bags.
Quick link: UK Manufacturers Shrink Sheeting shopping page.
Below is some information on what shrink film is, how it is made and what types of shrink film is available.
Shrink film comes in two basic varieties: single-wound (flat) and centerfold.
Shrink tubing is also commonly used for shrink wrapping. It is essentially the same as centerfold shrink film, except that the non-folded side is sealed to create a tube.
Shrink bags are again very similar to shrink film. They are sealed on three sides to form a bag to place the product in.
More information on shrink wrap films at www.packagingknowledge.com
Shrink wrap films are the most popular and inexpensive materials used for packing. Nowadays, shrink wrap films are available in a variety of models and sizes. Commonly used types include polyethylene shrink film, PVC shrink film and polyolefin shrink wrap. They pack products such as boxes, tapes, CDs, food, DVDs, videocassettes, jewelry boxes, photographs and frames.
PVC shrink films are used for packing non-perishable items. This type of film will shrink at low heat. Though PVC shrink film is approved by Food and Drug Administration (FDA) for food packing, it has a pungent odor.
Poly shrink wrap film is a combination of polyethylene and polyethylene. It is more transparent and smoother than PVC shrink film. It usually requires high temperatures to shrink but also works well with one step shrink wrap machines. Polyolefin shrink wrap films are more commonly used for packing food products. Polyolefin shrink wrap films are available in different forms such as low-temp polyolefin, anti-fog polyolefin and pre-perforated polyolefin.
A general purpose shrink film, the polyethylene shrink film is well known for its versatile nature. It can also withstand bad climatic conditions. So it is used to wrap large items such as boats and cars during the winter. Polyethylene shrink films mostly come with UVI protection to avoid damages caused by ultraviolet rays. EVA (Ethyl Vinyl Acetate) is added with polyethylene shrink films to keep them soft and flexible in winter. This heavy duty shrink film is available in eye-catching colours and attractive prints.
All types of shrink wrap films come primarily in two varieties, single-wound and centerfold. In centerfold shrink wrap films, the products are tucked in between the fold of the films, and then the edges are sealed. But in single-wound shrink wrap film, one layer of film is wound around a core. This kind of shrink wrap film is widely used for packing automatic equipment. The centerfold shrink wrap film is meant for semiautomatic and manual shrink packaging.
Shrink films are available in different widths and gauges, mostly in 60, 75, and 100 gauges, with a width above 10 inches. Generally, prices depend on the length, width, and qualities such as the shine and clarity. PVC shrink films are the cheapest of the lot. Shrink films can be availed from any of the local outlets or online stores specialising in the same. The main advantage of online stores is that they provide a wide array of options.