All can liners are manufactured using blown-film extrusion equipment. In this manufacturing process, Polyethylene resin pellets are mixed with color concentrates and additives. They are then piped into the extruders, which in turn mixes and melts the resin formula. The mixture is then forced, under pressure, through a die and blown into a large bubble with a uniform gauge (thickness).
Located downstream from the extruder, finishing equipment flattens the bubble and heat-seals the bottoms to the specified length of the finished bag. The poly stream is perforated, pulled apart to create separate bags, then folded. Trash bags are individually folded and packed in high-quality, dispenser packaging.
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Polyethylene film at polypropylene film manufacturers is typically much less expensive, and high-density polyethylene can provide vast financial savings for high-quantity delivery because of its decreased weight. The lightweight nature of polypropylene packaging additionally contributes to low delivery costs, even though the cloth itself is greater expensive.
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