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Introduction to the application form of heat shrinkable film
摘要：The packaging of sealed packaging is similar to shortened film packaging. The film wraps the tray around the tray, and then two hot grippers heat seal the films at both ends together. This is the application mode of surrounding film, and thus more packaging modes are carried out.
1. Sealed packaging
This kind of packaging is similar to shortened film packaging. The film wraps the tray around the tray, and then two hot grippers heat seal the films at both ends together. This is the application mode of surrounding film, and thus more packaging modes are carried out.
2. Full width packaging
This kind of packaging requires that the packaging film is wide enough to cover the tray, and the shape of the tray is regular, so it has its advantages in application, and the appropriate film thickness is 17 ~ 35 μ m.
3. Manual packaging
This kind of packaging is a very simple one of the packaging around the film machine. The film is installed on a rack or held by hand, transformed by the tray or wound around the tray. Mainly used in the new packaging after the damaged wrapped pallet, and popular pallet packaging. The packaging speed is slow, and the appropriate film thickness is 15 ~ 20 μ m.
4. Packaging of stretch film machine
This is a very common mechanical packaging method, which is rotated by the support or the film around the support, and the film is fixed on the support and can be moved up and down. This kind of packing can be very big, about 15 ~ 18 plates per hour. The appropriate film thickness is about 15 ~ 25 μ m.
5. Horizontal mechanical packaging
Different from other packaging, it turns around articles by film, which is suitable for long goods packaging, such as carpet, plate, fiberboard, special-shaped materials, etc.
6. Packaging of paper drum
This is one of the new uses of wrapping film, which is better than wrapping with wrapping film in old paper drum packaging. The suitable film thickness is 30 ~ 120 μ m.
7. Packaging of small items
This is a new packaging method of shrink film, which can not only reduce data consumption, but also reduce the storage space of pallets. In foreign countries, this packaging began to be introduced in 1984. Only one year later, many such packaging appeared in the market. This packaging method has great potential. Suitable film thickness 15 ~ 30 μ m.
8. Packaging of pipes and cables
This is an example of the use of the surrounding film machine in a special field. The packaging equipment is installed at the end of the production line. The fully active stretching film can not only replace the tape to bind the data, but also have a maintenance effect. The combined thickness is 15 ~ 30 μ m.
9. Stretching mode of pallet mechanism packaging
The packaging of stretch film machine must be stretched. The stretching methods of pallet mechanical packaging include direct stretching and pre stretching. There are two kinds of pre stretching, one is roll pre stretching and the other is electric stretching. Direct stretching is to complete the stretching between the tray and the film. This method has low stretching ratio (about 15% ~ 20%). If the stretching ratio exceeds 55% ~ 60%, it exceeds the original bending point of the film, the film width is reduced, the puncture function is also lost, and the film is easy to break. And at 60% tensile rate, the tensile force is still large. For light goods, it can deform the goods.
Pre stretching is done by two rollers. The two rollers pre stretched by the roller are connected together by the gear unit. The stretching ratio can differ according to the gear ratio. The tension occurs by the rotary table. Because the stretching occurs in a short interval and the friction between the roller and the film is large, the film width does not shrink, and the original puncture function of the film also persists. In practice, there is no stretching attack when wrapping, and the fracture caused by sharp edges or corners is reduced. This pre stretching can improve the stretching ratio to 110%.
The stretching mechanism of electric pre stretching is the same as that of roller pre stretching. The difference is that the two rollers are driven by electricity, and the stretching has nothing to do with the transformation of tray. Therefore, it has stronger compliance. Light, heavy and irregular goods are suitable. Because the tension is low during packaging, the pre stretching ratio of this method is as high as 300%, which greatly saves data and reduces cost. Suitable film thickness 15 ~ 24 μ m.
This kind of packaging is similar to shortened film packaging. The film wraps the tray around the tray, and then two hot grippers heat seal the films at both ends together. This is the application mode of surrounding film, and thus more packaging modes are carried out.
2. Full width packaging
This kind of packaging requires that the packaging film is wide enough to cover the tray, and the shape of the tray is regular, so it has its advantages in application, and the appropriate film thickness is 17 ~ 35 μ m.
3. Manual packaging
This kind of packaging is a very simple one of the packaging around the film machine. The film is installed on a rack or held by hand, transformed by the tray or wound around the tray. Mainly used in the new packaging after the damaged wrapped pallet, and popular pallet packaging. The packaging speed is slow, and the appropriate film thickness is 15 ~ 20 μ m.
4. Packaging of stretch film machine
This is a very common mechanical packaging method, which is rotated by the support or the film around the support, and the film is fixed on the support and can be moved up and down. This kind of packing can be very big, about 15 ~ 18 plates per hour. The appropriate film thickness is about 15 ~ 25 μ m.
5. Horizontal mechanical packaging
Different from other packaging, it turns around articles by film, which is suitable for long goods packaging, such as carpet, plate, fiberboard, special-shaped materials, etc.
6. Packaging of paper drum
This is one of the new uses of wrapping film, which is better than wrapping with wrapping film in old paper drum packaging. The suitable film thickness is 30 ~ 120 μ m.
7. Packaging of small items
This is a new packaging method of shrink film, which can not only reduce data consumption, but also reduce the storage space of pallets. In foreign countries, this packaging began to be introduced in 1984. Only one year later, many such packaging appeared in the market. This packaging method has great potential. Suitable film thickness 15 ~ 30 μ m.
8. Packaging of pipes and cables
This is an example of the use of the surrounding film machine in a special field. The packaging equipment is installed at the end of the production line. The fully active stretching film can not only replace the tape to bind the data, but also have a maintenance effect. The combined thickness is 15 ~ 30 μ m.
9. Stretching mode of pallet mechanism packaging
The packaging of stretch film machine must be stretched. The stretching methods of pallet mechanical packaging include direct stretching and pre stretching. There are two kinds of pre stretching, one is roll pre stretching and the other is electric stretching. Direct stretching is to complete the stretching between the tray and the film. This method has low stretching ratio (about 15% ~ 20%). If the stretching ratio exceeds 55% ~ 60%, it exceeds the original bending point of the film, the film width is reduced, the puncture function is also lost, and the film is easy to break. And at 60% tensile rate, the tensile force is still large. For light goods, it can deform the goods.
Pre stretching is done by two rollers. The two rollers pre stretched by the roller are connected together by the gear unit. The stretching ratio can differ according to the gear ratio. The tension occurs by the rotary table. Because the stretching occurs in a short interval and the friction between the roller and the film is large, the film width does not shrink, and the original puncture function of the film also persists. In practice, there is no stretching attack when wrapping, and the fracture caused by sharp edges or corners is reduced. This pre stretching can improve the stretching ratio to 110%.
The stretching mechanism of electric pre stretching is the same as that of roller pre stretching. The difference is that the two rollers are driven by electricity, and the stretching has nothing to do with the transformation of tray. Therefore, it has stronger compliance. Light, heavy and irregular goods are suitable. Because the tension is low during packaging, the pre stretching ratio of this method is as high as 300%, which greatly saves data and reduces cost. Suitable film thickness 15 ~ 24 μ m.
