The ABA three-layer film blowing machine is a device that produces multi-layer composite films through a three-layer co-extrusion process. Its core advantage lies in the ability to combine raw materials of different materials and properties (different types of plastic resins, such as polyethylene (PE), polypropylene (PP), and nylon (PA), can be used for the A and B layers). This combination endows the films with diversified properties, making them widely applicable in fields such as packaging, agriculture, industry, and daily necessities. The following are its main uses and typical application scenarios:
I. Packaging Field: Mainstream Application Scenarios
1. Food Packaging
Use: It is used to produce food-grade composite films for packaging various foods, including snack bags, quick-frozen food bags, cling film, and liquid packaging bags.
Performance Advantages:
Multi-layer Functional Combination: The outer layer (Layer A) can be made of high-gloss and high-hardness materials (such as PP) to enhance the appearance. The middle layer (Layer B) utilizes high-toughness materials (such as PE) to improve puncture resistance. The inner layer (Layer A) employs materials with excellent heat-sealing properties (such as LDPE) to ensure a secure seal.
Barrier Optimization: By incorporating layer structures with high-barrier materials like EVOH and PA, the films achieve moisture-proof, anti-oxidation, and oil-resistant properties, thus extending the shelf life of food products.
Typical Products: Potato chip packaging bags, composite films for rice woven bags, and pre-prepared food packaging bags.
2. Industrial Product Packaging
Use: It is applied in manufacturing heavy-duty packaging films, chemical raw material bags, mechanical parts packaging bags, etc.
Performance Advantages:
High Strength and Impact Resistance: Through the combination of PE/HDPE and linear low-density polyethylene (LLDPE), the tensile strength and tear resistance of the films are enhanced, meeting the requirements for packaging heavy objects.
Chemical Resistance: The inner layer can be made of corrosion-resistant materials to prevent the penetration of chemical raw materials.
Typical Products: Inner films for fertilizer bags, anti-rust packaging films for steel, and pallet wrapping films.
3. Daily Necessities Packaging
Use: It is utilized for producing shopping bags, garbage bags, clothing packaging bags, etc.
Performance Advantages:
Low Cost and Flexibility: With PE as the main material, the three-layer co-extrusion process reduces the thickness (e.g., 5 - 15μm), cutting down on raw material consumption while maintaining a soft texture.
Printability: The outer layer can have its surface tension optimized, facilitating the printing of patterns and text (such as supermarket logos and product information).
Typical Products: Supermarket roll bags, household perforated garbage bags, and clothing dust bags.
II. Agricultural Field: Functional Mulch Films and Covering Materials
1. Agricultural Films (Mulch Films, Greenhouse Films)
Use: It produces three-layer composite agricultural films for ground covering (mulch films) or greenhouse covering.
Performance Advantages:
Thermal Insulation and Light Regulation: The middle layer is added with infrared blocking agents (such as ceramic masterbatch) to reduce heat loss. The outer layer is incorporated with anti-ultraviolet (UV) additives to extend weather resistance, while the inner layer is added with anti-fogging agents to prevent condensation from affecting light transmittance.
Anti-aging: The three-layer structure helps disperse ultraviolet damage, increasing the service life (for example, greenhouse films can be used for 1 - 3 years).
Typical Applications: Vegetable planting mulch films, covering films for flower greenhouses, and cold-proof films for fruit trees.
2. Agricultural Packaging
Use: It is used for making grain storage bags, forage silage films, etc.
Performance Advantages:
Puncture Resistance and Sealing: The multi-layer structure enhances the resistance to bites from insects and rodents, and the sealing performance of the inner layer prevents moisture ingress.
Typical Products: Corn silage films, grain storage bags.
III. Special Industrial Uses: Functional Film Production
1. Medical Packaging
Use: It is employed in the production of medical sterilization packaging bags, pharmaceutical composite films (which must comply with GMP standards).
Performance Advantages:
High Barrier and Hygiene: Structures such as PA/PE or PET/PE are adopted to block bacteria, water vapor, and oxygen. The raw materials must be certified by the FDA or relevant pharmacopoeias.
Typical Applications: Sterilization packaging bags for syringes, the inner layer of tablet aluminum-plastic composite films.
2. Electronic/Electrical Packaging
Use: It is used for manufacturing antistatic films, electronic component packaging bags.
Performance Advantages:
Antistatic Function: Conductive masterbatch is added to the middle layer, and the surface resistance is controlled at 10⁶ - 10⁹Ω, preventing static electricity from damaging precision electronic components.
Typical Products: Packaging bags for mobile phone accessories, protective films for PCB circuit boards.
3. Building Materials Packaging
Use: It is applied to produce protective films or packaging bags for building materials products (such as tiles, glass, and plates).
Performance Advantages:
High Wear Resistance and Adhesion: The outer layer is made of high-hardness materials, and the inner layer is added with a low-viscosity adhesive layer, achieving a balance between protection and easy peeling.
Typical Applications: Protective films for tile transportation, temporary protective films for glass curtain wall installation.
