Stretch wrap
Stretch film is an umbrella term for elastic films which can be extremely stretched without breaking.
We extend these films within its elastic range, they have an elastic restoring force.
Some of these films are also liable under severe strain successive still good, which is exploited for various applications. This adhesive force on itself, the most multi-layered films is achieved by formulating sticky polymers, or by mixing migrierendem sticky, highly viscous polyisobutylene, in film production ( = extrusion) in the foil surface layer.
Cling film
In the supermarket, they are used for the packaging of meat and vegetables in trays and bowls. In the household are used cling wrap to cover bowls and for wrapping food.
Cling films based on PVC have the advantage that droplet formation is avoided and no condensation forms on the film due to their polarity. In the supermarket this antifog property of the film is very much appreciated, otherwise the unit of packaging, water fogging ( drops) can be unsightly.
Cling films are produced on the basis of polyethylene. PE as a non-polar plastic has no Antifogeigenschaft.
Silage film
The expert talks of agri- stretch film with the help of preserved animal feed are produced by lactic acid fermentation. The good elasticity and adhesion of the film allows this crucial air-tight packaging of the silage. The film thickness is 25 microns, the roll widths will be 500 mm or 750 mm, depending on the silage stretch machine used.
Loading units fuse film
These films are an indispensable part of the modern logistics in the transport of palletized load units. They are primarily:
Insufficient charging unit fuse may lead to the fact that due to the acceleration and deceleration during transport the goods " independent" does and can lead to injury or damage to goods over addition. A dimensionally stable charging unit is therefore a prerequisite for a successful load securing. A VDI guideline deals with this topic in more detail.
Pallet stretch film
Also winding stretch, packaging stretch film called, are manufactured in a variety of thicknesses and widths. Typical film thicknesses are between 12-35 microns at a web width of 500 mm.
Depending on the range of daily volume, the range is backed up manually with hand or by machine with stretch film machine stretch film wrapping machines ( = stretch wrapper, stretch machines, stretch wrapping lines ).
To use this get a maximum of 20 kg roles that are processed on semi - automatic and fully automatic stretch wrapping lines. In the beverage industry fully automatic stretch wrapping lines are usually an integral part of the bottling plant.
Stretch winders are available in different designs and price ranges, semi - or fully automatic, for the horizontal and vertical Palettentumwicklung, the experts call " stretchwrapping ".
Stretch film in roll widths 100-250 mm is used for bundling long transport goods.
Perforated ( macro-perforated ) stretch film is used for securing palletized where air circulation is required ( plants, cardboard has yet to dry it in the autoclave sterilized canning ).
A more exotic applications is the area of bondage, but also the protection of luggage at airports.
With a consumption of 1.5 million tons per year in Europe, it is in stretch film to a mass product of European film industry, with a significant share of the total LLDPE consumption.
Stretch hood film
Stretch hoods also stretch Hoods, (like pallets with refrigerators, bricks, etc.) come in uniformly sized loading units used. You are pulled over grippers charge and the pallet where it firmly rests after the release of cargo and pallet and so establishes the charger fuse.