Film Blowing Machine

Product Overview

Industrial Film Blowing Machines are engineered to convert thermoplastic resin into continuous plastic film through precision extrusion, bubble forming, cooling, collapsing, and winding. The equipment integrates resin feeding, thermal melting, film bubble control, cooling, web handling, and rewinding into a robust, continuous production line.

Depending on the specific machine configuration, this equipment produces diverse film widths, gauges, and structures tailored for packaging, agricultural, industrial, and specialized film-converting applications. Every system is engineered to match the required resin characteristics, target film specifications, and production output targets.

CPP PP Water Cooling Blown Film Machine
This film blowing machine is used to make CPP and PP film with water cooling function, it is widely used to make zipper bag, self sealing bag etc.
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Blowing Machine Inline With Printing Machine
This film blowing machine is used to make LDPE, HDPE, LLDPE film which is widely used to make wrapping film, garbage bag, courier bag, shopping bag etc.
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Mini PE Film Blowing Machine
This film blowing machine is used to make LDPE, HDPE, LLDPE film which is widely used to make wrapping film, garbage bag, courier bag, shopping bag etc.
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Double Head PE Film Blowing Machine
This film blowing machine is used to make LDPE, HDPE, LLDPE film which is widely used to make wrapping film, garbage bag, courier bag, shopping bag etc.
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Mono Layer HDPE LDPE Film Blown Machine
This film blowing machine is used to make LDPE, HDPE, LLDPE film which is widely used to make wrapping film, garbage bag, courier bag, shopping bag etc.
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HDPE LDPE ABA Extruder Machine
This film blowing machine is used to make LDPE, HDPE, LLDPE film which is widely used to make wrapping film, garbage bag, courier bag, shopping bag etc.
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Three Layer Co-extrusion Film Blowing Machine
This blown film machine is used to make LDPE, HDPE, LLDPE film which is widely used in green house film, wrapping film, garbage bag film, courier bag film etc.
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IBC Co-extrusion Blown Film Machine
This blown film machine is used to make LDPE, HDPE, LLDPE film which is widely used in green house film, laundry bag film, garbage bag film, courier bag film etc.
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Working Principle / Production Process

The industrial film blowing process consists of five distinct mechanical stages:

Blowing Machine Inline With Printing Machine

Feeding & Melting: Thermoplastic resin pellets are gravity-fed into the extruder barrel, where a precision screw conveys, compresses, and melts the material through zoned thermal heating and high mechanical shear.

Extrusion & Filtration: The molten polymer passes through a filtration system to remove impurities, establishing steady melt pressure before entering the annular die head.

Film Bubble Formation: The polymer melt is extruded upward through the die gap to form a continuous tubular profile. Compressed air is injected through the center of the die to inflate the melt into a precisely controlled film bubble.

Cooling & Bubble Stabilization: Symmetrical cooling air is directed around the film bubble via dual-lip air rings to lower the melt temperature, crystallize the polymer structure, and stabilize the bubble along the frost line height.

Collapsing & Winding: The cooled bubble passes through the collapsing frame and nip roll section, flattening the tube into a continuous web before it is wound into uniform mill rolls via tension-controlled winders.

Key Features

Continuous Heavy-Duty Production: Seamlessly integrates extrusion, bubble formation, cooling, collapsing, and winding into an uninterrupted manufacturing workflow.

Optimized Extrusion Stability: Precision-engineered screw and barrel assemblies deliver consistent resin melting and uniform material flow.

Controlled Bubble Geometry: Advanced die head designs and high-efficiency cooling air rings maintain uniform bubble stability and thickness distribution.

Zoned Thermal Regulation: Multi-zone barrel heating controls maintain precise processing temperatures tailored to specific thermoplastic polymers.

Reliable Web Handling & Winding

Engineered collapsing frames and automatic tension winders ensure wrinkle-free, uniform roll formation.

Flexible Configuration Options

Machine components and operating parameters are tailored to specific resin types, output targets, and final product applications.

Centralized HMI Control

Integrated control systems allow operators to monitor and fine-tune critical extrusion and take-off parameters in real time.

Technical Specifications

Technical specifications vary according to the selected machine model and engineering configuration. Typical parameters evaluated during project review include:

Parameter	Specification Range / Basis
Machine Model	Tailored to project requirements
Screw Diameter	Configured per model specifications
Screw L/D Ratio	Optimized per polymer processing needs
Lay-flat Film Width	Configured per model specifications
Film Thickness Range	Configured per model specifications
Max. Extrusion Output	Configured per model specifications
Main Motor Power	Configured per model specifications
Total Connected Power	Calculated per system configuration
Die Head Size	Selected per film width and resin type
Winding Configuration	Surface, centerline, or dual-station winder

Compatible Materials

Our film blowing machines are configured to process a wide range of thermoplastic resins through specialized extrusion systems, screw designs, and die configurations:

LDPE (Low-Density Polyethylene): Suitable for flexible films requiring high clarity and elongation.
High-Density Polyethylene (HDPE): Suitable for films requiring high stiffness, tensile strength, and moisture barrier properties.
LLDPE (Linear Low-Density Polyethylene): Suitable for high-strength films requiring superior puncture resistance and tensile toughness.
PP (Polypropylene): Suitable for applications requiring specific tensile strength, clarity, or thermal resistance.
Recycled & Specialty Resins: Accommodated when extrusion systems, venting, and feeding configurations are specifically matched to the material grade.

Actual material processing ranges are verified during the machine configuration and trial testing phase.

Applications

Our film blowing lines produce tubular and flat plastic films for diverse industrial converting sectors:

Flexible Packaging

Food packaging pouches, industrial liners, general-purpose bags, and converted film products.

Agricultural Films

Greenhouse cover films, silage bags, and mulch films (configured with specialized additives).

Industrial Packaging

Heavy-duty transport sacks, shrink wrap sheets, and protective industrial interleaving films.

Shopping & Courier Bags

High-strength films utilized as raw stock for high-speed bag-making machinery.

Laminating Substrates

Base film rolls prepared for downstream printing, coating, and multi-ply lamination.

General Converting

Continuous film rolls supplied for various downstream slitting and packaging operations.

Machine Configuration & Customization

Film blowing lines are modularly configured to align with specific plant layouts and production objectives:

☆Extruder and barrier screw design

☆Die head size and annular gap configuration

☆Single-layer or multi-layer co-extrusion setups (such as monolayer, ABC, or ABA structures)

☆Advanced cooling systems and internal bubble cooling (IBC) integration

☆Take-up towers, oscillating nip units, and guiding systems

☆Surface or centerline automatic tension-controlled winders

☆Gravimetric batch blenders, auto-loaders, and hydraulic screen changers

Manufacturing & Quality Control

With decades of heavy industrial machinery manufacturing expertise, our production facilities maintain strict engineering standards across printing, laminating, film extrusion, and converting equipment lines.

In-House Machining & Assembly

Experienced engineering teams oversee precision component machining, mechanical alignment, and electrical panel integration.

Pre-Shipment Verification

Every film blowing machine undergoes rigorous operational dry runs and system integration checks before crating to ensure compliance with engineering specifications.

Installation & Technical Support

We provide comprehensive engineering services to support global installation and startup:

Technical Documentation

Detailed manuals including electrical schematics, pneumatic diagrams, control architectures, and recommended spare parts lists.

On-Site Commissioning

Experienced technical engineers are available for overseas installation supervision, mechanical leveling, utility hookup guidance, and operator training.

Ongoing After-Sales Support

Remote diagnostic capabilities and guaranteed access to critical replacement parts minimize operational downtime.

Frequently Asked Questions

Q: What thermoplastic materials can your film blowing machines process?

A: Processing compatibility depends on the specific extrusion system and screw configuration. Standard systems process LDPE, HDPE, LLDPE, and PP. Post-consumer recycled (PCR) resins or biodegradable compounds can also be processed when the barrel venting, screw compression, and feeding systems are engineered accordingly.

Q: How do I select the right film blowing machine model for my plant?

A: Machine selection is dictated by your raw material grade, required film width, target thickness, hourly output requirements, film layer structure (monolayer vs. multilayer), and the final application. Providing these details allows our engineering team to propose an optimized configuration.

Q: Can a single machine produce multiple film widths and thicknesses?

A: Yes, within an optimized operating window determined by the extruder output, die gap, cooling capacity, and take-up mechanics. Specific size transition limits should be reviewed based on your target product specifications.

Q: Are the film blowing lines customizable for specific factory layouts?

A: Yes. Tower heights, extruder orientations, control panel placements, and auxiliary equipment layouts can be engineered to accommodate your facility's ceiling clearance and floor space constraints.

Q: What information is required to receive an accurate technical quotation?

A: To formulate a precise technical proposal, please provide your resin type, target film width, thickness range, hourly output goal, film structure (monolayer/multilayer), and any specific downstream requirements.

Q: What technical support is provided for international machine installation?

A: We provide comprehensive documentation and offer on-site engineering support for mechanical installation, system commissioning, and initial startup training to ensure a smooth transition into commercial production.

With abundant experience, we are one of the most professional film blowing machine manufacturers and suppliers in China. Please rest assured to wholesale high quality film blowing machine at competitive price from our factory. If you have any enquiry about cooperation, please feel free to email us.

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