What are the methods of hot-pressing sealing in heat shrinkable film?

Heat shrinkable film hot-pressing sealing method, let's take a look:

1. Heat the two contact surfaces of heat shrinkable film to make it in a melting shape, and then increase the pressure to make the contact surfaces become integrated, which can play a series of effects such as packaging and aesthetics.

2. Temperature is a factor that affects the sealing effect. If the temperature is too high, it will easily lead to the deformation of the contact surface and affect the appearance. If the temperature is too low, it will easily lead to problems such as lax sealing.

3. heat shrinkable film manufacturers tell you that resistance heating and pulse heating are two commonly used methods for hot sealing, as well as special wave heating and high-frequency current.

Heat shrinkable film used it in industrial packaging from the beginning of industrial production, and later used heat shrinkable film in food packaging. Heat shrinkable film uses the energy that the film is stretched longitudinally or transversely in a high elastic state to be stored in the film, and uses the memory effect of thermoplastics on the shape before biaxial or unidirectional stretching to restore the shape before stretching when it meets heat again to achieve the packaging purpose.

Heat shrinkable film is a good film packaging material, which has the following advantages:

Excellent anti-theft and dustproof; Close to the appearance of goods, it can be applied to the packaging of goods of various shapes, and the contents of the packaging are universal; A variety of commodities can be packaged in a heat-shrinkable packaging bag, which prevents the loss of individual small commodities and is convenient for customers to carry; Good transparency allows customers to directly see the packaged goods, which is convenient for customers to choose goods; By choosing different resins and formulas, heat shrinkable films with different mechanical strength and functions can be produced, which can be used not only for inner packaging with low strength and light weight of goods, but also for transportation packaging (outer packaging) of mechanical products and building materials for containers with good strength requirements.

Heat shrinkable film set label is a new label printed on plastic film or plastic pipe, which mainly includes common heat shrinkable film types such as PE, PVC and PET, and has the following characteristics:

1. When heat shrinkable film sets of labels are labeled, there is no need to use adhesive, and the same transparency as glass can be obtained;

2. The heat shrinkable film sleeve is close to the goods, with compact packaging and can display the shape of the goods, so it is suitable for irregular goods that are difficult to package;

3. The printing of heat shrinkable film sets of labels belongs to film printing, which can protect the imprint and the label performance is good;

4. heat shrinkable film sets of labels can provide 360 multi-angle decoration for packaging containers, and can print product descriptions and other commodity information on the labels, so that consumers can understand the performance of products without opening the packaging;

5, heat shrinkable film sets of labels are easy to process, the packaging is sealed, pollution-proof, and the protection of goods is good;

Heat-shrinkable printing film is mainly used for winding and packaging products and goods, which can make the packaged goods more stable and stable. It is also the case that this product has been widely used in various industries, especially in the building materials industry. So, have you considered how to store the unused products?

Besides being used as shrink labels, heat-shrinkable printed films are also used in the outer packaging of daily commodities. Because it can not only protect the packaged goods from impact, rain-proof, moisture-proof and rust-proof, but also make the products win users with beautifully printed outer packaging, and at the same time, it can well show the good image of the manufacturers. More and more packaging manufacturers use printed shrink film instead of conservative transparent film. Because printing shrink film can improve the appearance grade of products, is conducive to product advertising, and can make trademarks have a deep impression on consumers.