1, PVC book film
This kind of stretch film it's light resistance, aging resistance is better, and has a better tear resistance, can breathe, is a clean, colorless, transparent film, therefore, can be made with polyvinyl chloride resin ink printing. It is suitable for packaging bags, book covers, etc.
2, polyethylene film
This type of stretch film it is a colorless, tasteless, odorless, translucent non-toxic insulating material, a large number of bags used as packaging, food bags, but also to make a variety of containers.
3, polyester film
This kind of stretch film it is a colorless, transparent, moisture resistance, airtight, soft, strong, acid and alkali oil ester and solvent resistance, high and low temperature are not afraid of the material, so can be used for packaging and composite materials.
4, polystyrene film
This type of stretch film it is a soft and tough film, clean, colorless and transparent, does not contain plasticizer, the film layer will always be soft, freeze-resistant, storage does not age.
5, polypropylene film
This type of stretch film it has a good gloss and very good transparency, resistance to heat, acid and alkali, solvents, friction, tear resistance, breathable, below 160 ℃ can not be heat-sealed.
6, polyethylene film
This kind of stretch film it's molecular basically does not carry polar groups, is a non-polar printing polymer, polypropylene molecules, each structural unit contains a methyl, which points to a kind of weakly polar groups, basically belongs to the nonpolar polymers, therefore, they are relatively poor affinity for the ink, so in the printing of the printing to be processed before printing in order to Get satisfactory prints.
7, nylon film
This type of stretch film is stronger than polyethylene film, odorless, non-toxic, impermeable to bacteria, oil-resistant, ester-resistant, resistant to boiling water and most solvents, generally used for loading, abrasion-resistant packaging, as well as steaming packaging (reheat of food), which does not require surface treatment can be printed.
The range of uses of stretch film
1, sealed packaging
This packaging is similar to shrink wrap packaging, the film around the pallet to the pallet all wrapped up, and then two heat grips to the two ends of the film heat seal together. This is the earliest form of stretch film used, and more forms of packaging have developed from this.
2, full-width packaging
This packaging requirements for packaging film wide enough to cover the pallet, the shape of the pallet is regular, so the use of it, suitable for film thickness of 17 ~ 35μm.
3, hand-packed
This packaging is the simplest type of packaging in the stretch film machine, the film is mounted on a shelf or by hand, by the pallet rotation or film around the Pallet turn. Mainly used in the packaged pallet after the breakage of the repackaging, and ordinary pallet packaging. This packaging is slow, suitable for film thickness of 15 to 20μm.
4, stretch film machine packaging
This is one of the most common and most extensive form of mechanical packaging, by the pallet rotation or film rotation around the pallet, the film is fixed in the bracket can be moved up and down. This packaging capacity is very large, about 15 to 18 trays per hour. Suitable for film thickness of about 15 ~ 25μm.
5, horizontal mechanical packaging
Unlike other packaging, by the film around the items, suitable for long goods packaging, such as carpets, plates, fiberboard, shaped materials, etc..
6, paper tube packaging
This is one of the latest uses of stretch film, better than the old-fashioned paper tube packaging with stretch film packaging. Suitable film thickness of 30 ~ 120μm.
7, small items of packaging
This is the latest form of stretch film packaging, not only to reduce material consumption, but also reduce the pallet storage space, in foreign countries, this packaging was first introduced in 1984, just one year later, the market has appeared in a number of such packages, this form of packaging has great potential. Suitable for film thickness of 15 ~ 30μm.
8, tube and cable packaging
This is an example of stretch film machine in special areas of application, packaging equipment installed at the end of the production line, fully automatic stretch film can be used both instead of banding the material bundled, but also play a protective role. The applicable thickness is 15 to 30μm.
9, pallet institutional packaging of the form of stretch
Stretch film machine packaging are subject to stretching, pallet mechanical packaging of the form of stretching direct stretching and pre-stretching.