The Working Principle of the PE Film Blowing Machine

PE film blowing machines are well-known to many manufacturers and film producers, but at the same time, many are not familiar with its working principles and film-making technology. Many manufacturers struggle to master the technique when using PE film blowing machines to produce PE films. The blown films often lack stability, and even when high-quality PE raw materials are used, the resulting PE films frequently have uneven transparency, elasticity, and thickness. These issues are influenced by factors such as temperature, wind force, and flow rate during the blowing process.

PE Film Blowing Working Principle

The PE blown film process includes heating, traction, and winding. The heating process is divided into five zones. The first three zones are heating zones (preheating) with gradually increasing temperatures, crucial for controlling the temperature accurately. If the temperature is too low, the material doesn't extrude well, and if too high, it may modify or deform. Taking an 80 film-blowing machine as an example, the first zone is set at a lower temperature of approximately 170°C, with the next two zones being higher. The fourth zone (three-way zone) is also a heating zone and contains a filter screen, which filters out impurities from the raw materials before entering the fifth zone. The filter screen mesh size determines the transparency and smoothness of the blown PE film. A finer mesh (smaller holes) results in smoother films but may cause raw material retention.

The fifth zone is the extrusion zone, which is critically important. Temperature and flow rate must be strictly controlled. The entire heating process should be adjusted according to the extrusion conditions, as both excessively high and low temperatures affect film formation. The fifth zone is equipped with a blower to speed up film formation. Uneven film thickness must be adjusted using the die head screws.

In the traction zone, an air pump is used to blow air through the die head, making the film stretch upwards in a straight line to control its size. Then, the film passes through a film stabilizer for "film stabilization". By adjusting the main machine’s and the traction speed, the film thickness can be controlled (the faster the main machine's speed, the faster the feed rate, resulting in thicker film; conversely, slower speed produces thinner film). This is the most crucial step.

Factors Affecting PE Blown Film Machine Price

Understanding the costs associated with PE film blowing machines is crucial for any manufacturer. Several factors influence the price of a PE film blowing machine:

• Machine Specifications: The size, capacity, and technical specifications of the machine play significant roles in determining its price. Larger machines with higher output capacities typically cost more than smaller, less powerful ones.
  

• Technology and Features: Advanced features such as automatic thickness control, digital monitoring systems, and energy-efficient components can drive up the price. However, these features often result in long-term savings and improved product quality.
  

• Material Quality: The manufacturing quality and durability of the machine's materials affect the overall price. Machines made with high-grade steel and superior components tend to have higher upfront costs but offer longer lifespans and better performance.
  

• Brand Reputation: Renowned brands like Guolian are known for their quality and reliability. While their prices may be higher, the investment usually means fewer breakdowns, better support, and higher resale value.
  

Why Choose Guolian for Your PE Blown Film Needs

Choosing the right brand is critical to maximizing your investment in a PE film blowing machine. Guolian enjoys a strong reputation in the industry for the following reasons:

• Innovative Technology: Guolian consistently invests in R&D, bringing cutting-edge technology and features to its machines. This ensures manufacturers stay competitive by efficiently producing high-quality films.
  

• Durability and Reliability: Guolian machines are built to be durable, capable of withstanding rigorous production schedules. This reduces downtime and maintenance costs, contributing to overall operational efficiency.
  

• Comprehensive Support: Guolian offers exceptional customer support, from installation and training to ongoing technical assistance. This ensures you can fully utilize your PE blown film machine and swiftly address any issues.

• Cost-Effective Solutions: While Guolian models may have higher initial prices, their efficiency, reliability, and low maintenance requirements often result in lower total cost of ownership.

Understanding the working principles of PE film blowing machines is the first step in optimizing your production process. The choice of machine and brand significantly impacts your operational efficiency and product quality. Factors such as machine specifications, technology, material quality, and brand reputation play crucial roles in determining the price of a PE film blowing machine. By choosing a trusted brand like Guolian, you benefit from advanced technology, reliability, and comprehensive support—ultimately making a smarter investment in your manufacturing capabilities.

By mastering these core concepts, you can make informed decisions to ensure your operations run smoothly and efficiently while producing top-quality polyethylene films.