What are the purchasing tips for Dalian blown film units?

As a key equipment for plastic film production, the performance of Dalian blown film unit directly affects the quality of products, production efficiency, and enterprise benefits. Therefore, when selecting a blown film unit, it is necessary to consider multiple factors comprehensively in order to choose the equipment that suits one's own needs.

1、 Clear requirements, targeted

Product type and specifications: Firstly, it is necessary to clarify which types of films need to be produced, such as PE, PP, PVC, etc., as well as the specifications for film thickness, width, color, etc. Different materials and specifications have different requirements for the configuration of blown film units. For example, the production of PE film requires the selection of PE special screws, and the production of ultra-thin film requires the selection of high-precision die heads.

Production demand: Determine the required production capacity of blown film units based on the production scale of the enterprise and market demand. The output is usually expressed in the weight of the film produced per hour (kg/h), and it is necessary to choose a unit that can meet one's own production needs to avoid insufficient capacity or waste.

Automation level: Select blown film units with different levels of automation based on the actual situation and budget of the enterprise. A highly automated unit can reduce manual operations, improve production efficiency and product quality, but the price is relatively high.

2、 Focus on core components to ensure performance

Extruder: The extruder is the core component of the blown film unit, responsible for melting and plasticizing plastic raw materials. Attention should be paid to parameters such as the aspect ratio, compression ratio, and rotational speed of the screw, as well as the stability and control accuracy of the heating system.

Mold head: The mold head determines the forming quality and dimensional accuracy of the film. It is necessary to select the appropriate type of die head based on the specifications and materials of the film, such as spiral die head, core rod die head, etc., and pay attention to the machining accuracy and surface smoothness of the die head.

Cooling system: The cooling system affects the crystallinity and transparency of the film. It is necessary to choose a cooling system with high cooling efficiency and uniform air flow, such as air rings, water cooling, etc.

Traction device: The traction device is responsible for pulling the film out of the mold and winding it into a roll. It is necessary to choose traction devices with stable traction speed and precise tension control, such as variable frequency motors, servo motors, etc.

3、 Assess brand strength and select reliable partners

Brand awareness: Choosing a well-known and reputable brand can reduce the risk of equipment failure and provide better after-sales service.

Technical Strength: Understand the manufacturer's research and development capabilities, technical team, and production experience, and choose manufacturers with advanced technology and strong innovation capabilities.

After sales service: A comprehensive after-sales service system is the guarantee for the long-term stable operation of equipment, and it is necessary to understand the manufacturer's service network, response speed, and service content.

4、 Multiple comparisons and cautious decision-making

Comparing prices and services from three different manufacturers: After determining the requirements, multiple inquiries can be made to compare the product configurations, prices, and services of different manufacturers and choose the solution with higher cost-effectiveness.

Field visit: If conditions permit, you can visit the manufacturer for on-site inspection to understand the production process, quality control system, and after-sales service of the equipment.

Reference case: Understanding the manufacturer's past customer cases, especially those that are similar to their own needs, can provide a more intuitive understanding of the equipment's performance and service level.

5、 Other precautions

Energy consumption: Choosing energy-saving and environmentally friendly blown film units can reduce production costs and improve enterprise efficiency.

Convenient operation: Choosing a blown film unit with a user-friendly interface and easy maintenance can improve production efficiency and equipment utilization.

Safety: Select blown film units that meet safety standards and equip them with necessary safety protection devices to ensure the personal safety of operators.

Choosing a blown film unit is a complex system engineering that requires comprehensive consideration of multiple factors. Only by clarifying one's own needs, focusing on core components, examining brand strength, comparing multiple aspects, and making cautious decisions, can one choose a blown film unit that is more suitable for one's own needs and create greater value for the enterprise.

Here are some additional suggestions:

Before purchasing a blown film unit, consult a professional to understand the advantages and disadvantages of different brands and models.

When signing a contract, carefully read the contract terms and clarify the rights and obligations of both parties.

Regular maintenance of the blown film unit can extend the service life of the equipment.