Very narrow tubing for items such as light tubes - supplied extremely well protected in either corrugated cardboard or boxes to avoid any damage in transit
Mid range stocked sizes - the weight of each roll in kg is the same as the width of the roll in inches - the 8" wide stock reel therefore weighs 8kg
Wide sheeting is often termed Builders Rolls and is used to cover large areas in decorating and building environments as well as acting as a very good waterproof membrane.
Polythene tubing
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Layflat tubing
Continuous tube of polyethylene on a roll. Layflat tubing is ideal for packaging long 'difficult to wrap' items. Insert into tubing and cut to required length then heat sealed, tied, stapled or taped shut both ends to create made-to-measure bags.
How layflat tubing is made?
The layflat tubing or poly tubing is made using the blown film process.
The blown film process is the method by which the vast majority of all polythene products are manufactured.
Polythene granules are fed into an extruder. As the granules are transported down the extruder screw, they are continuously heated and eventually become molten.
The melt passes through a narrow slit forming a tube which is extruded vertically until it can be clamped at the top nip rollers, which continuously pull the tube from the die.
Once clamped the tube is inflated to create the desired width, the speed of the nip rolls determines the film thickness. The film is air cooled to set the film dimensions.
The tube is then collapsed prior to the nips to form a layflat tube to a set width and thickness. The flat film is passed through path rollers to a floor mounted winder.
Remember:
Lay Flat Tubing (LFT) is the most basic blown film product - formed by collapsing and flattening the bubble / tube. All other blown film products are derived from the layflat.
Gusseted layflat tubing (GLFT) is formed by using a pair of wooden (or metal triangles) to alter the shape of the bubble as it passes through the collapsing frame.