Heat shrink film: How to become an invisible guardian in commodity transportation?

As a thermoplastic film, the biggest feature of heat shrink wrap film is that it can shrink when heated, close to the surface of the commodity, and form a tight package. This body-fitting packaging feature allows heat shrink film to fit tightly to commodities of various shapes, whether it is a regular cube or an irregular artwork, it can be perfectly wrapped. However, the protectiveness of heat shrink film is not limited to this. In practical applications, heat shrink film is often used as inner packaging, combined with the transport packaging hung on the outer packaging, to jointly build a solid line of defense.

This combination of internal and external protection is the key to the role of heat shrink film in commodity transportation. The inner layer of heat shrink film can effectively prevent collision, extrusion and friction of commodities during transportation through its tight fit. This physical protection is particularly important for sensitive commodities such as fragile goods and electronic products. Heat shrink film can also isolate the intrusion of external factors such as dust and moisture, and keep the inside of the commodity dry and clean. This is also crucial for commodities such as food and medicine that require strict control of environmental conditions.

The outer layer of transport packaging provides additional physical strength and buffering capacity. It can not only withstand external force impact during transportation, but also regulate the internal environment, such as temperature and humidity, to a certain extent, to provide more comprehensive protection for the goods. The perfect combination of heat shrink film and transport packaging enables the goods to be fully protected during transportation, greatly reducing the risk of damage and deterioration.

The reason why heat shrink wrap film can become an invisible guardian in the transportation of goods is inseparable from its unique material properties and careful design. From the material point of view, heat shrink film is usually made of thermoplastics such as polyethylene (PE), polypropylene (PP), and polyester (PET). These materials have good flexibility and plasticity, and can shrink quickly and adhere to the surface of the goods when heated. They also have certain strength and wear resistance, and can withstand a certain degree of physical impact and friction.

Some functional additives are often added in the production process of heat shrink wrap film to enhance its performance. For example, adding antistatic agents can reduce the accumulation of static electricity on the surface of the film and prevent the adsorption of dust and impurities; adding flame retardants can improve the flame retardant properties of the film and reduce the risk of fire; adding UV protection agents can protect the goods from damage by ultraviolet rays. The addition of these functional additives makes the heat shrink film more comprehensive and effective in protecting goods.

In terms of design, heat shrink film has also been carefully considered. In order to ensure that the heat shrink film can fit tightly to goods of various shapes, designers usually use advanced molds and cutting technologies to customize production according to the shape and size of the goods. The heat shrink film produced in this way can not only perfectly wrap the goods, but also form a certain tensile force during the shrinking process, further enhancing the fixation and protection of the goods.

The shrinking temperature and shrinkage rate of the heat shrink wrap film are also factors that designers need to focus on. If the shrinking temperature is too high or too low, it will affect the shrinking effect and fit of the heat shrink film; and if the shrinkage rate is too large or too small, it will affect the fixation and protection of the heat shrink film on the goods. Therefore, designers need to reasonably select the parameters such as material, thickness, shrinking temperature and shrinkage rate of the heat shrink film according to the characteristics of the goods and transportation conditions to ensure that it plays the best protection effect during transportation.

The application of heat shrink wrap film in commodity transportation is wide and diverse. The following are some typical application cases:
Electronic product packaging: Electronic products are usually sensitive to collision and static electricity. Heat shrink film can fit tightly to the surface of electronic products to prevent collision and static electricity accumulation during transportation. Heat shrink film can also isolate external factors such as dust and moisture, keeping electronic products clean and dry.
Food packaging: Food needs to be kept fresh and hygienic during transportation. Heat shrink film can isolate external factors such as air and moisture, extending the shelf life of food. Heat shrink film can also prevent food from being squeezed and deformed during transportation, maintaining its integrity and beauty.
Artwork and cultural relic packaging: Artworks and cultural relics usually have unique shapes and values. Heat shrink film can be customized according to the shape of artworks and cultural relics, fit tightly to their surfaces and provide comprehensive protection. Heat shrink film can also isolate external factors such as dust and light, maintaining the original state and value of artworks and cultural relics.
Medical device packaging: Medical devices need to be kept sterile and clean during transportation. Heat shrink film can fit tightly to the surface of medical devices and provide comprehensive physical protection. Heat shrink film can also isolate external factors such as air and microorganisms, maintaining the sterility of medical devices.