Structured Manufacturing Data (2026)

Plastic Film Blowing Machine

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Plastic Film Blowing Machine used in the Manufacture of Plastic Products sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Plastic Film Blowing Machine is characterized by the integration of Extruder Barrel and Annular Die. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Industrial machine that produces plastic film by extruding molten polymer through a circular die and inflating it into a bubble.

View Full Specifications Explore Manufacturing Sources

Product Specifications

Technical details and manufacturing context for Plastic Film Blowing Machine

Definition
A plastic film blowing machine is a continuous extrusion system that manufactures thin plastic films used in packaging, agriculture, and industrial applications. It operates by melting plastic resin pellets, forcing the molten polymer through an annular die to form a tube, then inflating it with air to create a thin-walled bubble that is cooled and collapsed into flat film. This equipment is essential in B2B supply chains for producing flexible packaging materials, greenhouse covers, and protective wraps at high volumes with consistent thickness control. Manufacturers rely on these machines to convert raw plastic resins into value-added film products for downstream packaging converters and industrial users.
Working Principle
Plastic resin is melted in an extruder, forced through a circular die to form a tube, inflated with air to stretch and thin the material, then cooled and collapsed into flat film rolls.
Common Materials
Carbon Steel, Stainless Steel, Chrome-plated Components, Industrial-grade Electrical Components
Technical Parameters
  • Maximum film width output (mm) Customizable
  • Maximum extrusion output rate (kg/h) Customizable
Components / BOM
  • Extruder Barrel Part
    Houses the screw and provides heating zones for polymer melting
    Material: Nitrided Steel
  • Annular Die
    Forms molten polymer into a continuous tube for inflation
    Material: Hardened Tool Steel
  • Air Ring
    Provides controlled air flow to cool and stabilize the film bubble
    Material: Aluminum Alloy
  • Nip Rolls
    Collapses the cooled bubble into flat film and provides tension control
    Material: Rubber-coated Steel
  • Winder
    Winds the finished film into rolls for storage and transport
    Material: Carbon Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Plastic Film Blowing Machine.

Blown Film Machine Film Blowing Extruder Plastic Film Extrusion Line high output plastic film blowing machine industrial bubble film extruder equipment automatic plastic film winder machine stainless steel film blowing production line customizable thickness plastic film machine

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 10-40 MPa (die head pressure)
flow rate: 50-500 kg/hr (extruder capacity)
temperature: 150-300°C (polymer dependent)
blow up ratio: 1.5:1 to 4:1 (bubble expansion ratio)
film thickness range: 10-200 microns
Media Compatibility
✓ LDPE (Low-Density Polyethylene) ✓ LLDPE (Linear Low-Density Polyethylene) ✓ HDPE (High-Density Polyethylene)
Unsuitable: Highly abrasive filled polymers (e.g., glass fiber reinforced compounds)
Sizing Data Required
  • Required film width (layflat width in mm)
  • Target production rate (kg/hr)
  • Desired film thickness (microns)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Die Lip Buildup and Contamination
Cause: Accumulation of degraded polymer residues, additives, or contaminants on the die lip, often due to improper material handling, inadequate purging procedures, or thermal degradation from prolonged exposure to high temperatures, leading to flow disruptions and film defects.
Gearbox Bearing Fatigue and Misalignment
Cause: Progressive wear or sudden failure of bearings in the extruder or winder gearbox, primarily caused by improper alignment during installation, excessive mechanical loads from torque variations, inadequate lubrication, or contamination from external particles, resulting in vibration, noise, and eventual seizure.
Maintenance Indicators
  • Irregular or pulsating bubble formation with visible thickness variations or instability in the film bubble, indicating potential die issues, temperature inconsistencies, or air ring malfunctions.
  • Unusual grinding, knocking, or high-pitched whining noises from the extruder or gearbox areas, accompanied by increased vibration levels, suggesting bearing wear, misalignment, or lubrication failures.
Engineering Tips
  • Implement a rigorous preventive maintenance schedule for the air ring and cooling system, including regular cleaning of air passages and calibration of airflow to ensure consistent cooling, which stabilizes the bubble and reduces stress on the film, extending die and equipment life.
  • Establish a strict material handling and purging protocol using appropriate purging compounds between material changes or during shutdowns to prevent polymer degradation and residue buildup in the extruder and die, minimizing contamination-related failures and maintaining film quality.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems CE Marking - Machinery Directive 2006/42/EC ASTM D1921 - Standard Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
Manufacturing Precision
  • Die Gap Uniformity: +/-0.005mm across circumference
  • Screw Barrel Straightness: 0.02mm per meter length
Quality Inspection
  • Film Thickness Uniformity Test using laser micrometers
  • Material Melt Flow Index (MFI) Analysis for polymer consistency

Factories Producing Plastic Film Blowing Machine

Manufacturer profiles with relevant production capability in China

Add your factory

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Frequently Asked Questions

What materials can be processed with this plastic film blowing machine?

This machine processes various thermoplastic polymers including LDPE, HDPE, PP, and PVC to produce plastic films for packaging, agricultural, and industrial applications.

How does the bubble diameter affect film production?

Bubble diameter determines the final film width after collapsing. Our machines offer adjustable bubble control systems to produce films from narrow to wide widths with consistent thickness distribution.

What maintenance is required for the extruder barrel and screw?

Regular cleaning after material changes, periodic inspection for wear (especially with abrasive materials), and proper temperature control maintenance ensure optimal extrusion performance and longevity.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Manufacture of Plastic Products.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Request Manufacturing Insight for Plastic Film Blowing Machine

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for Plastic Film Blowing Machine.

Your business information is used only to process this request.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Thank you! Your message has been sent. We'll respond within 1–3 business days.

Need to Manufacture Plastic Film Blowing Machine?

Compare manufacturer profiles with relevant product and process capability.

Create Manufacturer Profile Contact Us
Previous Product
Injection Molding Machine
Next Product
Polycarbonate Injection Molded Lens Housing