In the world of packaging materials, there is a product that seems ordinary yet (contains enormous energy) — stretch film. With its unique properties and wide-ranging applications, it plays an indispensable role in numerous fields.  

Stretch film, also known as stretch wrap, is typically extremely thin. Some high-performance stretch films are even only 8 microns thick, equivalent to one-tenth the diameter of an adult male's hair. However, this film as thin as cicada wings boasts astonishing strength and flexibility. A high-performance stretch film composed of 56 layers of nanoscale materials exhibits excellent puncture and tear resistance: a pen tip can hardly pierce it, and even an adult cannot snap it by sitting on it.  

Such powerful properties have enabled stretch film to find wide application in various fields. In the logistics and warehousing industry, it serves as the "intimate guardian" of goods. Thanks to its good stretchability and self-adhesion, stretch film can tightly wrap goods and fix them firmly on pallets, effectively preventing displacement or scattering during handling and transportation, thus greatly reducing the risk of goods damage. Meanwhile, stretch film also has functions such as dust-proof, oil-proof, moisture-proof, and waterproof, providing all-round protection for goods during storage and transportation. Whether electronic products, mechanical equipment, or food and beverages, daily necessities, and other commodities, they can all safely reach their destinations wrapped in stretch film.  

In high-tech industries such as new energy, chemical fiber, and chips, stretch film also plays a key role. For precision electronic chips and optical components, the softness and high cleanliness of stretch film can avoid scratches or contamination during packaging, ensuring product performance and quality. In chemical fiber production, stretch film can be used to wind chemical fiber bundles, ensuring they are neat and orderly for subsequent processing. In the new energy field, such as during the production and transportation of batteries, the insulation and protective properties of stretch film can effectively safeguard battery safety and prevent issues like short circuits.  

With the continuous enhancement of environmental awareness, the research and development of stretch film is also moving towards a more green and sustainable direction. Some enterprises have begun to use biodegradable materials to produce eco-friendly stretch film. While meeting packaging performance requirements, this new type of stretch film can gradually decompose in the natural environment, reducing plastic pollution and easing the burden on the earth's ecological environment. This not only conforms to the national environmental policy orientation but also caters to the market demand for green packaging materials.  

To continuously improve the performance and quality of stretch film, enterprises have increased R&D investment and actively cooperated with scientific research institutions. For example, Ningbo Hongyan Packaging Materials Co., Ltd. has collaborated with industrial chain "giants" such as ExxonMobil Chemical, Dow Chemical, and Sinopec to overcome challenges in raw material formulations, ensuring excellent product quality from the source. Meanwhile, the company has also joined hands with scientific research institutions like Zhejiang University Ningbo Institute of Technology and Ningbo University of Technology to carry out joint technological R&D. Through the deep integration of industry, university, and research, stretch film can exhibit diversified properties according to different customers' application needs. It can wrap products more tightly while becoming thinner ("slimming"), and it has excellent tear resistance and ductility at high stretch ratios, providing customers with differentiated solutions.  

In terms of production equipment, domestic enterprises have also made remarkable breakthroughs. Ningbo Hongyan Packaging Materials Co., Ltd. has successively developed a 7-layer cast film production line with a production speed of 800 meters per minute and a 56-layer nano-film production line with a production speed of 1,050 meters per minute. The birth of these domestic first sets of equipment has filled the gap in domestic technology in this field, greatly improving production efficiency and product quality, injecting strong impetus into the development of the stretch film industry.  

Today, the market influence of stretch film continues to expand. Its products not only sell well in the domestic market but also are exported to more than 30 countries and regions such as the United States, Australia, Japan, Germany, and Poland, accounting for one-third of the global market share. Many well-known domestic and foreign brands, including JD.com, Foxconn, BOE, Walmart, Aux, and Coca-Cola, have become loyal users of stretch film.  

Looking to the future, as (all industries) continue to increase their performance requirements for packaging materials and environmental standards become increasingly strict, stretch film will continue to advance through innovation. On the one hand, R&D personnel will further explore new materials and production processes to continuously enhance the performance of stretch film, such as improving its tensile strength, puncture resistance, and weather resistance, to meet the packaging needs of more complex environments and high-end products. On the other hand, green environmental protection will become an important development direction for stretch film, and degradable and recyclable stretch film products will gradually become the market mainstream. At the same time, with the development of intelligent technology, stretch films with intelligent monitoring functions are also expected to emerge, bringing new changes to the packaging industry.  

Stretch film, this seemingly unremarkable film, is playing an increasingly important role in the packaging field and even the entire industrial chain with its unique charm and the power of continuous innovation, contributing to the development of various industries.