Designed with a 700 mm die/air ring configuration, the 700 mm High-Speed Polyethylene Film Blowing Machine converts HDPE and LDPE resin into continuous tubular film through extrusion, air cooling, traction and winding. It is suitable for producing film for shopping bags, T-shirt bags, garbage bags and general packaging. The extrusion system, die configuration and winding arrangement can be selected according to the required film dimensions, material grade and production target. Optional equipment supports different film processing and downstream converting requirements.
Key Advantages
Output Capacity: A maximum rated extrusion output of 60 kg/h provides a starting point for production planning. Actual output depends on resin grade, film thickness, film width and operating conditions.
Film Consistency: Controlled extrusion temperature, die settings and take-up speed help maintain consistent film dimensions during production.
Winding Options: Winding configurations can be selected according to finished roll dimensions, handling requirements and downstream bag-making processes.
Production Flexibility: Optional feeding, surface treatment and winding equipment allow the machine configuration to match specific production requirements.
Applications
Shopping Bag Film: Suitable for polyethylene film used in retail shopping bags. Film dimensions and material properties should match bag size and converting requirements.
T-Shirt Bag Film: Processes film for vest-style carrier bags. Resin grade, thickness and sealing requirements determine the appropriate film specification.
Garbage Bag Film: Suitable for household and commercial garbage bag production. Film thickness and material selection can be matched to bag dimensions and intended use.
General Packaging Film: Processes compatible polyethylene film for general packaging applications. Confirm material compatibility and required film properties before selecting the production configuration.
Technical Specifications
|
Parameter |
Specification |
|
Machine Type |
High-Speed Film Blowing Machine |
|
Applicable Materials |
HDPE, LDPE |
|
Die / Air Ring Size |
700 mm |
|
Film Width (Lay-flat) |
200–600 mm |
|
Film Thickness |
0.009–0.20 mm |
|
Maximum Extrusion Output |
60 kg/h |
|
Screw Diameter |
45 mm |
|
Screw L/D Ratio |
30:1 |
|
Cooling Fan Power |
3 kW |
|
Traction Speed |
10–100 m/min |
|
Traction Motor Power |
1.5 kW |
|
Overall Dimensions |
4000 × 2300 × 4500 mm |
Film Production and Process Control
Extrusion: The screw and barrel melt and convey polyethylene resin to the die head. Resin properties, temperature settings and screw configuration affect melt stability and output.
Film Forming: The 700 mm die head forms the molten polymer into a tubular film bubble. Die configuration and cooling airflow must suit the selected resin and required film dimensions.
Traction and Winding: The traction unit draws the film through the line before winding. Take-up speed, tension and winding settings influence roll consistency and the film's suitability for subsequent processing.
Material and Product Selection
Resin Grade: HDPE and LDPE have different processing characteristics. Confirm the resin grade and any material blends before finalizing the extrusion and die configuration.
Film Dimensions: Specify the required lay-flat width (within the 200–600 mm range), thickness range and finished roll dimensions to ensure proper matching with the 700 mm machine configuration.
Production Target: Provide the target output in kilograms per hour and expected operating schedule. Production estimates should account for material properties, film dimensions and process conditions.
Downstream Requirements: For bag-making applications, confirm roll width, roll diameter, winding direction and required film properties. This information helps align film production with the converting process.
Optional Equipment and Customization
Rotary Die Head: Available for applications requiring die rotation. Confirm compatibility with the selected machine configuration.
Double Winder: Provides an alternative winding arrangement based on production and roll-handling requirements.
Automatic Roller Change: Can be specified for production lines requiring automated roll changing.
Corona Treatment: Available for film requiring surface treatment before printing or bonding. The required treatment level depends on the intended process.
Screen Changer: Can be included according to melt filtration requirements and the selected extrusion configuration.
Automatic Loader: Supports resin feeding and reduces manual material handling during production.
Installation and Production Planning
Electrical Supply: Confirm voltage, frequency, phase and total installed power before installation. The final electrical specification must match the factory power supply.
Installation Space: Allow room for the extrusion unit, film tower, winding section, auxiliary equipment and operator access. Confirm the machine layout and dimensions before preparing the installation area.
Production Line Integration: When connecting the machine to a bag-making line, confirm film dimensions, roll specifications, output requirements and material handling arrangements.
Frequently Asked Questions
Q: Which materials can the machine process?
A: The listed configuration supports HDPE and LDPE. Other resin grades or blends require technical confirmation.
Q: What is the relationship between the 700 mm designation and the film width?
A: The 700 mm designation refers to the machine's die/air ring size, which efficiently processes lay-flat film widths ranging from 200 to 600 mm.
Q: What is the maximum extrusion output?
A: The listed maximum extrusion output is 60 kg/h. Actual output varies with resin grade, film dimensions and operating conditions.
Q: Can the machine be customized?
A: Yes. Options may include a rotary die head, double winder, automatic roller change, corona treatment, screen changer and automatic loader, subject to configuration confirmation.
Q: What information is required for a quotation?
A: Provide the resin grade, film width, thickness range, target output, finished roll dimensions, factory power supply and required optional equipment.
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