Explain the three aspects of heat shrinkable film.

Heat shrinkable film is a popular film in today's market, not only because of the characteristics of heat shrinkage, but also because of the widespread application in heat shrinkable film. heat shrinkable film products are not only flexible, but also have strong tear resistance. Specifically, it has the following properties:

1, heat shrinkable film has compression fixity:

The products are wrapped and packaged by the retraction force of the heat shrinkable film after stretching, forming a compact and space-free unit whole, so that the product trays are tightly wrapped together, which can prevent the products from being dislocated and moved during transportation, and at the same time, the adjustable stretching force can make the hard products cling to each other and make the soft products compact.

2. Cost saving in heat shrinkable film:

Using heat-shrinkable film for product packaging can reduce the use cost, reduce the labor intensity of workers, and improve the packaging speed and packaging grade, which is also a highlight of heat-shrinkable film produced by heat-shrinkable film manufacturers.

3. The unitization of heat shrinkable film:

This is one of the characteristics of heat shrinkable film. With the winding force and retractility of the heat shrinkable film, the products are tightly and fixedly bundled into a unit, so that the scattered small pieces become a whole.

Heat shrinkable film is made of PVC resin mixed with more than a dozen auxiliary materials and inflated twice. Its characteristics are good transparency, easy shrinkage, freely adjustable shrinkage rate according to users' needs and strong operability. The main uses are as follows:

1. Most of them are used as insulation layers when connecting weak current wires, such as wiring on circuit boards and heat shrinkable tubes after welding; In addition, it is also used in packaging to prevent scratches, such as the outer packaging of aluminum pipes.

2. Beverage label. Now, the ring labels of the whole bottle of drinks are basically heat shrinkable film.

Heat shrinkable film's packaging materials are updated from time to time. In addition to the traditional paper, plastic, glass and metal packaging, people have begun to explore the use of new raw materials to make packaging, and plant raw materials have begun to enter the market. Consumers are fickle creatures. Its purchase habits are constantly difficult to figure out. Even if it looks like a big trend in the future, some people will not care for it for a few weeks.

Some production processes in heat shrinkable film are not complicated. Ordinary production lines are generally composed of a rolling machine, a printing machine, a back coating machine and a cutting machine. The film with a thickness of only 0.3mm to 0.7mm is produced mainly through the direct stirring of the rolling machine, the rotation of the roller and high-temperature rolling. At the same time of production, colors are printed on the front of the film by the printing machine, and a layer of back coating is attached to the back of the film by the back coating machine.

Don't underestimate this back coating, it is an important determination of heat shrinkable film's performance. The back coating is made of special materials and is an affinity agent. It is precisely because of this back coating that the pvc film can be tightly integrated with the medium density board or other boards, and it will not be opened for ten or even fifteen years. However, the problem of ordinary film sticking is that it can't solve the problem of film falling off. Because the whole production process is carried out at high temperature (the temperature in the roller reaches 220 degrees), heat shrinkable film has high light resistance and fire resistance.

Heat shrinkable film has excellent quality assurance, but some people may say that PVC before competition is a chemical product, but it is not comparable to natural materials, which can not eliminate toxicity and odor, and will inevitably cause harm to the environment. This is not the case. This is because the raw materials used to produce heat shrinkable film are specially refined, and all the bad substances are extracted. Therefore, PVC is clean and odorless, and has no irritation to human skin or respiratory system. For those who are allergic to wood and paint, it is appropriate to use furniture or kitchenware packaged in heat shrinkable film. By using heat shrinkable film as decorative film, people can use a lot of MDF, particleboard, plywood and fiberboard, and reduce the amount of wood used, thus reducing the damage to forests and even the environment. From this perspective, heat shrinkable film has made great contributions to the protection of the ecological environment.