LDPE + HDPE films

Use of LDPE films

LDPE film is used for packaging a wide range of products requiring rigid group packing or perfect protection of individual products from dust, water, etc.

Group packaging – e.g. food packaging (water, milk, flour, etc.)
unit packing – e.g. packaging of printed matter, confectionery
for further production (e.g. bags, sacks)
cut-outs for the transfer of goods on a pallet or in a carton, etc.

TECHNICAL INFORMATION

There are 3 basic designs of LDPE film: flat film, semi-hose and hose. Semi-folds and hoses can be produced with folds (tabs).
LDPE film is produced by blowing from a melt of branched (high pressure, low density) polyethylene (PE). The production of pure granulate produces a clean transparent shrink film suitable for packaging subject to strict hygienic conditions.
The shrink film is heated by flowing warm air (above 120°C) in a so-called shrink tunnel. After softening, the heat causes the film to shrink and it follows the approximate shape of the packaged item. The subsequent cooling stiffens the foil in the achieved shape and forms a fixing package.

FEATURES

transparent, odourless
impermeable to water, almost impermeable to air humidity
high chemical resistance
heat resistance: -50°C to +85°C
good electrical insulation properties
health protection

CHARACTERISTICS OF FOILS

Slippery x non-slippery – films can be produced in slippery or non-slippery finishes. The slippery finish is suitable e.g. for a bag product or for a plant where there is a requirement for the films to slide over each other. Conversely, non-slip film is suitable for group packing, which is stacked on a pallet so that the film does not slide over each other and the goods do not fall apart on the pallet.

Antistatic – the film contains an antistatic agent that will rid it of excess electrostatic charge.

Full surface microperforation – the film can be secured by full surface microperforation. This treatment is suitable for packaging goods that we want to get rid of excess moisture or, on the contrary, require a constant supply of moisture.

UV filter – a film with a protective filter against UV rays. This type of film is used in cases of prolonged storage in outdoor areas where goods are exposed to sunlight. Thanks to the protective filter, the film retains its original properties during the entire storage period and thus ensures perfect protection of the goods. The film is supplied as standard with a 6-month and, at the customer’s request, with 9, 12, 15 and 18-month guaranteed treatment.

Colour – the standard film comes in a transparent finish; at the customer’s request the film can be produced in a different colour. The degree of transparency of the film depends on the percentage of dye added. Opaque films can be produced from a thickness of 30 my. Coloured films are mainly used in operations where sunlight or visibility of the pallet contents is undesirable.

Printing – the film can be printed with single or multi-colour printing (e.g. recycling signs, company logo, etc.).