Single-Plate Screen Changer for Film Blowing Production Line
The single-plate screen changer is a low-cost, simplified melt filtration device suitable for small-to-medium capacity PE/PP film blowing production lines handling clean raw materials or intermittent production. Below are its core application points, selection specifications, installation and maintenance procedures, and process optimization solutions.
I. Applicable Scenarios and Core Value
1. Production Line Compatibility Features
|
Production Line Type |
Specific Parameters |
Reason for Compatibility |
|
Small-scale experimental film blowing line |
Capacity ≤50kg/h, raw material is virgin material (no recycled material) |
Simple structure, low cost, meets small-batch experimental needs |
|
Civilian Film Batch Production Line |
Capacity 50-150kg/h, raw material impurity content ≤0.5% |
Low screen change frequency; controlled impact on output during downtime for screen changes |
|
Low-End Packaging Film Production Line |
e.g., garbage bags, inner liner bags with minimal film surface quality requirements |
No need for high-cost automatic screen changers, reducing equipment investment |
2. Core Functions
Impurity Filtration: Intercepts minor carbon particles and unplasticized granules in raw materials, preventing bubble holes and black spots while boosting film appearance pass rate (from 85% to over 92%).
Die Protection: Prevents hard contaminants from entering die channels, mitigating lip wear and extending die lifespan.
Simplified Operation: Compact design with minimal installation space, ideal for retrofitting older blown film lines.
For production lines primarily using virgin material with capacity ≤150kg/h and low sensitivity to downtime, prioritize single-plate screen changers. For lines with recycled material ≥30% by weight, capacity ≥200kg/h, and a focus on continuous production, upgrade to dual-station hydraulic screen changers.
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