---
title: "Plastic Film Blowing Machine"
industry: "Manufacture of Plastic Products"
verification_protocol:
  urn: "URN:CNFX:ME:PLASTIC_FILM_BLOWING_MACHINE"
  data_integrity_hash: "4924d3c78470ac93fa89a502ca8d4fc6"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:PLASTIC_FILM_BLOWING_MACHINE"
  data_source_uri: "https://cnfx.com/llms/industry/plastic-products-manufacturing/product/plastic-film-blowing-machine.md"
  official_resource_url: "https://cnfx.com/industry/plastic-products-manufacturing/product/plastic-film-blowing-machine"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "0.5-25.0 MPa (melt pressure), 180-280°C (melt temperature), 0.8-1.2 m/s (haul-off speed)"
    unit: "mm"
  secondary_spec:
    status: "config-dependent"
    typical_range: "0.5-25.0 MPa (melt pressure), 180-280°C (melt temperature), 0.8-1.2 m/s (haul-off speed)"
    unit: "kg/h"
engineering_limits:
  max_safe_operating_point:
    value: 28.0
    unit: "MPa"
    consequence: "Die lip rupture occurs due to hoop stress exceeding HDPE yield strength (26-33 MPa) at 280°C; polymer crystallization at sub-170°C increases viscosity by 300% causing flow instability; bubble instability at &gt;1.5 m/s results from Reynolds number exceeding 2300 in annular flow"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Polymer degradation at 300°C producing volatile compounds"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate melt thermocouple with PID control maintaining ±2°C tolerance"
  - node_2:
      trigger: "Die lip contamination accumulating 0.1mm particulate layer"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement ultrasonic cleaning system operating at 40kHz with 15-minute cycles"
bom_nodes:
  extruder-barrel:
    type: "component"
    urn: "URN:CNFX:ME:EXTRUDER_BARREL"
    interface_type: "physical-logic-coupled"
  annular-die:
    type: "part"
    urn: "URN:CNFX:ME:ANNULAR_DIE"
    interface_type: "physical-logic-coupled"
  air-ring:
    type: "part"
    urn: "URN:CNFX:ME:AIR_RING"
    interface_type: "physical-logic-coupled"
  nip-rolls:
    type: "part"
    urn: "URN:CNFX:ME:NIP_ROLLS"
    interface_type: "physical-logic-coupled"
  winder:
    type: "part"
    urn: "URN:CNFX:ME:WINDER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - MACHINERY DIRECTIVE 2006/42/EC"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/plastic-products-manufacturing/product/plastic-film-blowing-machine.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "48c0779c8ea5d214b41699f33f90cb8fc8a538ad4b2dd925abf10409730ad12e"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Plastic Film Blowing Machine

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

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-25.0 MPa (melt pressure), 180-280°C (melt temperature), 0.8-1.2 m/s (haul-off speed)**. Failure boundary: **Melt pressure exceeding 28.0 MPa causes die lip rupture, melt temperature below 170°C initiates polymer crystallization, haul-off speed above 1.5 m/s induces bubble instability**, Mechanism: **Die lip rupture occurs due to hoop stress exceeding HDPE yield strength (26-33 MPa) at 280°C; polymer crystallization at sub-170°C increases viscosity by 300% causing flow instability; bubble instability at &gt;1.5 m/s results from Reynolds number exceeding 2300 in annular flow**.

### 2.1 Analytical Physics Model
Governed by the **LMTD Logarithmic Mean Temperature Difference**:

> **Primary Equation**: $Q = U \cdot A \cdot \Delta T_{lm}$  
> **Engineering Impact**: Sizing validation for pasteurization and cooling tunnels.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| U | Heat Transfer Coeff | Engineering Constant |
| A | Area | Engineering Constant |
| \Delta T_{lm} | LMTD | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Polymer degradation at 300°C producing volatile compounds | 8 | Bubble rupture from internal pressure drop | Integrate melt thermocouple with PID control maintaining ±2°C tolerance |
| Die lip contamination accumulating 0.1mm particulate layer | 8 | Film thickness variation exceeding ±5% specification | Implement ultrasonic cleaning system operating at 40kHz with 15-minute cycles |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| primary_spec | Config-dependent | mm | Verified |
| secondary_spec | Config-dependent | kg/h | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Annular Die](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/annular-die.md) `(Standalone System)`
- [Air Ring](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/air-ring.md) `(Standalone System)`
- [Nip Rolls](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/nip-rolls.md) `(Standalone System)`
- [Winder](https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/winder.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Extruder**, **Air Ring Cooling System**, **Winder/Rewinder**  
**Downstream Applications**: Plastic Shopping Bags, Agricultural Greenhouse Film, Food Packaging Film  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials can be processed with this plastic film blowing machine?
**A**: This machine processes various thermoplastic polymers including LDPE, HDPE, PP, and PVC to produce plastic films for packaging, agricultural, and industrial applications.

### Q: How does the bubble diameter affect film production?
**A**: 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.

### Q: What maintenance is required for the extruder barrel and screw?
**A**: Regular cleaning after material changes, periodic inspection for wear (especially with abrasive materials), and proper temperature control maintenance ensure optimal extrusion performance and longevity.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - MACHINERY DIRECTIVE 2006/42/EC

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Plastic Film Blowing Machine](https://cnfx.com/industry/plastic-products-manufacturing/product/plastic-film-blowing-machine)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: PLASTIC_FILM_BLOWING_MACHINE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 087379ec
