Products Produced by Layer Film Blowing Machines

With the continuous development of plastic processing technology, layer film blowing machines play a significant role in modern manufacturing. Thanks to their unique multi-layer co-extrusion technology, they can combine different plastic materials with various properties together, thus producing plastic products with diverse functions and characteristics. These products are widely used in numerous fields, meeting people's needs in daily life, industrial production, agricultural development, packaging, and many other aspects. Not only do these products possess excellent physical properties, but they also demonstrate advantages in terms of environmental protection and cost-effectiveness, providing strong support for the progress and development of various industries.

I. Products in the Packaging Industry
(I) Food Packaging
Layer film blowing machines can produce multi-layer films for food packaging, such as the commonly seen bags for potato chips, biscuits, and the casings for sausages. By using materials with good barrier properties, like ethylene-vinyl alcohol copolymer (EVOH), as the middle layer, they can effectively block the intrusion of oxygen, water vapor, and odors, preventing food from oxidizing, getting damp, or having off-flavors, and thus extending the shelf life and freshness period of food. Meanwhile, the outer layer is made of materials with good abrasion resistance and printability, such as polypropylene (PP), which is convenient for package design and logo printing. The inner layer uses materials that meet food contact safety standards, like polyethylene (PE), to directly contact the food and ensure food safety. This multi-layer structure of the film provides comprehensive protection for food, ensuring its stable quality during transportation, storage, and sales.
Additionally, for some foods that need to be refrigerated or frozen, such as ice cream and frozen dumplings, the films produced by layer film blowing machines with good cold resistance can adapt to low-temperature environments, preventing the films from becoming brittle and breaking at low temperatures and ensuring the integrity and sealability of the packaging.

(II) Packaging for Daily Necessities
In the packaging of daily necessities, layer film blowing machines are also widely applied. For example, the packaging bags for shampoo, body wash, cosmetics, and other products usually adopt multi-layer co-extruded films. These films can combine materials with high barrier properties, flexibility, and good heat sealing performance. They can not only prevent product leakage and volatilization but also display a good appearance on the shelves to attract consumers' attention. Moreover, by adjusting the proportion and characteristics of each layer of materials, the lightweight design of packaging bags can be achieved, reducing material costs and minimizing the impact on the environment.
For the packaging of some electronic products, such as mobile phones and tablets, the anti-static films produced by layer film blowing machines can effectively prevent static electricity from damaging electronic components, protecting the performance and quality of products during transportation and storage. These anti-static films usually have anti-static agents added to the materials or use plastic materials with anti-static properties as the inner layer, providing a safe and reliable packaging solution for electronic products.

II. Products in the Agricultural Field
(I) Agricultural Films
The agricultural films produced by layer film blowing machines play an important role in agricultural production. Multi-layer co-extruded agricultural films can integrate multiple functions such as heat preservation, light transmission, anti-aging, and anti-fogging. For example, by using materials with good heat preservation properties, like ethylene-vinyl acetate copolymer (EVA), as the inner layer, the soil temperature can be increased to promote the growth of crops. The outer layer adopts materials with strong anti-aging and weather resistance, such as low-density polyethylene (LDPE), to extend the service life of agricultural films, reduce the frequency of replacement, and lower agricultural production costs. Meanwhile, agricultural films with anti-fogging agents added can prevent fogging on the film surface, ensuring that crops in greenhouses can obtain sufficient light for photosynthesis, which is beneficial to improving the yield and quality of crops.
In addition, some agricultural films with weeding functions can also be produced by layer film blowing machines. These films have weeding components added to the middle layer, and after covering the farmland, the weeding components will be slowly released to inhibit the growth of weeds, reducing the workload of manual weeding and improving agricultural production efficiency.

(II) Agricultural Irrigation Pipes
Layer film blowing machines can also be used to produce pipes for agricultural irrigation. These pipes adopt a multi-layer structure. For example, the inner layer is made of non-toxic and corrosion-resistant materials, such as polyvinyl chloride (PVC), to ensure that the water being transported will not be contaminated and can withstand the erosion of chemical substances such as acids and alkalis in the soil. The middle layer can add reinforcing materials, such as glass fibers, to improve the strength and pressure resistance of the pipes, enabling them to withstand the pressure in the irrigation system and prevent rupture and water leakage. The outer layer uses materials with good anti-ultraviolet and weather resistance to protect the pipes from being damaged by natural factors such as sunlight, wind, and rain during long-term outdoor use. This multi-layer structure of irrigation pipes has good comprehensive performance, can meet the requirements of agricultural irrigation for pipes, ensure the stable operation of the irrigation system, and improve the utilization efficiency of water resources.

III. Products in the Industrial Field
(I) Industrial Packaging Films
In the packaging of industrial products, the packaging films produced by layer film blowing machines are of great importance. For example, for some large mechanical equipment, auto parts, and other products, high-strength and puncture-resistant packaging films are needed for protection. By co-extruding high-strength materials, such as nylon (PA), with other materials with flexibility and moisture-proof properties, the produced packaging films can effectively protect products from impacts, scratches, and the influence of humid environments during transportation and storage. The multi-layer structure of these packaging films can also be customized according to the specific needs of products, such as adding a barrier layer to prevent products from rusting or corroding, meeting the packaging requirements of different industrial products.
For some semi-finished products or components of electronic products, the anti-static and moisture-proof packaging films produced by layer film blowing machines can provide good protection. These packaging films can prevent static electricity from damaging electronic components and block the intrusion of external water vapor, ensuring the stable quality and performance of products during the production process and improving the yield rate of qualified products.

(II) Geomembranes
The geomembranes produced by layer film blowing machines are widely used in civil engineering and water conservancy projects. Geomembranes have good anti-seepage, isolation, and protection properties and can be used for anti-seepage treatment in landfill sites, artificial lakes, reservoirs, dams, and other projects. Multi-layer co-extruded geomembranes, by reasonably combining materials with different properties, such as using high-density polyethylene (HDPE) as the main anti-seepage layer and combining it with other auxiliary materials, can improve the anti-seepage performance, tensile strength, and environmental stress cracking resistance of geomembranes. The use of geomembranes can effectively prevent liquid leakage, protect the environment, and ensure the stability and safety of projects, playing an important role in modern infrastructure construction.

IV. Products in the Medical Field
(I) Medical Packaging Materials
The multi-layer co-extruded films produced by layer film blowing machines can be used for packaging medical products, such as disposable medical devices and drug packaging. These films have good barrier properties and can effectively block the intrusion of bacteria, viruses, and other microorganisms, ensuring the sterile state of medical products during storage and transportation. For example, by using materials with high barrier properties, such as polyvinylidene chloride (PVDC), as the middle layer and combining them with inner and outer layer materials that meet medical standards, the produced medical packaging films can meet strict hygiene requirements and ensure the safety and effectiveness of medical products.
In addition, some films used for drug packaging can also have functions such as light shielding and moisture-proofing. By adding corresponding additives or using special materials, they can protect the active ingredients of drugs from being damaged by light and moisture, extending the expiration date of drugs and providing important support for ensuring the quality of drugs.

(II) Wound Dressings
Layer film blowing machines can also be used to produce new types of wound dressings. These wound dressings adopt a multi-layer structure. For example, the inner layer is made of hydrophilic materials that can absorb the exudate from wounds, keep the wounds moist, and promote healing. The middle layer can add antibacterial components to prevent wound infections. The outer layer uses breathable and waterproof materials, which allow the wounds to breathe while preventing external pollution. This multi-layer structure of wound dressings provides a better solution for wound care, improves the speed and quality of wound healing, alleviates patients' pain, and has broad application prospects in the medical field.
In conclusion, layer film blowing machines, relying on their advanced multi-layer co-extrusion technology, can produce diverse products that meet the needs of different industries. These products play important roles in packaging, agriculture, industry, medical, and other fields, providing high-quality materials and solutions for the development of various industries. With the continuous progress and innovation of technology, the application fields of the products produced by layer film blowing machines will continue to expand and deepen, making greater contributions to promoting the sustainable development of various industries.