Talking about 9 forms of heat shrinkable film packaging

1.
Sealed packaging This packaging is similar to shortened film packaging
.

The film wraps around the tray, then two heat grippers heat seal the film at both ends together
.

This is the early application of wrapping film, and there are many packaging methods
.

2.
Full-width packaging This type of packaging requires that the width of the packaging film is sufficient to cover the tray and the shape of the tray, so it has its application
.

The appropriate film thickness is 17-35 μm
.

3.
Hand wrapping This wrapping is wrap around film machine wrapping* a simple one, the film is mounted on a shelf or hand-held, and the tray is bypassed by the tray or the film
.

Mainly used for new packaging and popular pallet packaging after the packaged pallet is damaged
.

The packaging speed is slow, and the appropriate film thickness is 15-20 μm
.

4.
Stretch film machine packaging This is a common general mechanical packaging method.
The film is fixed on the bracket and can be moved up and down by the rotation of the support or the rotation of the film around the support
.

This pack is very large, about 15 to 18 trays per hour
.

The suitable film thickness is about 15-25 μm
.

5.
The horizontal mechanical packaging is different from other packaging, and the film is rotated around the item, which is suitable for the packaging of long goods such as carpets, boards, fiberboards, and special-shaped materials
.

6.
The packaging of the paper tube is one of the new uses of the wrapping film, which is better than the wrapping film for the old paper tube packaging
.

The appropriate film thickness is 30 to 120 μm
.

7.
Packing small items This is a new packaging method of heat shrinkable film, which can not only reduce data consumption, but also reduce the storage space of pallets
.

In foreign countries, this kind of packaging began to appear in 1984
.

Just a year later, there are many such packages on the market with huge potential
.

The appropriate film thickness is 15 to 30 μm
.

8.
Packaging pipes and cables This is an example of the use of wrapping film machines in the special field.
The packaging equipment is installed at the end of the production line, and the fully automatic stretch film can not only replace the tape to bind the data, but also play a maintenance role
.

The shared thickness is 15 to 30 μm
.

9.
The packaging of the stretch mode stretch film machine packaged by the pallet mechanism must be stretched by stretching
.

The stretching methods of pallet mechanical packaging include direct stretching and pre-stretching
.

There are two kinds of pre-stretching, one is roller pre-stretching and the other is electric stretching
.

Direct stretching is done between the tray and the film
.

This method has a low stretch rate (about 15% to 20% if the stretch rate exceeds 55%) to 60%, which exceeds the original yield point of the film, the film width is reduced, the puncture function is also lost, and the film is easily broken.

.

And at 60% stretch rate, the pulling force is still very large, and for light goods, it can deform the goods
.