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Laminar Flow Pass Box: Essential for Contamination Control in Food Production Facilities

Created on 01.04
Food production and packaging facilities require uncompromising standards for material transfer to maintain product safety and prevent cross-contamination. Guangzhou Cleanroom Construction Co., Ltd. provides advanced B-grade laminar flow pass-through windows specifically engineered to meet the stringent hygiene and operational demands of modern food processing environments.
Sterilization chamber with pressure gauge and digital controls.

Core Technology & Operational Principle

Our laminar flow pass-through window solves the critical challenge of cross-contamination in food-grade cleanrooms. The device generates a vertical unidirectional laminar airflow (LAF) through a top-mounted H14 HEPA filter, creating a stable ISO 5 (B-grade) clean environment within the transfer chamber.
When personnel place items inside, the adjustable, uniform airflow of 0.38-0.57 m/s effectively removes surface particles. Furthermore, the integrated UV sterilization system provides auxiliary decontamination. This dual-action process ensures all items entering the clean zone meet strict hygiene protocols while consistently maintaining stable cleanroom pressure differentials.

Key Performance Specifications & Industry Advantages

Parameter
Technical Specification
Industry Advantage for Food Facilities
Cleanliness Class
B Grade (ISO 5)
Fully complies with GMP and HACCP requirements for high-risk food processing zones.
Filtration System
G4 Pre-filter + H14 HEPA (99.9995% @ 0.3µm)
Provides absolute protection against airborne microbes, allergens, and particulates, ensuring product purity and shelf life.
Construction Material
304 Stainless Steel Double Wall
Seamless, rounded corners enable easy cleaning and sanitization, resisting corrosion from food acids and cleaning agents.
Airflow Design
Vertical Laminar Flow, Top-Supply/Bottom-Return
Ensures uniform airflow with no dead zones, eliminating particle and microbial accumulation.
Control & Safety
Fan Control, UV Lamp, Electronic Interlock
Prevents simultaneous door opening, maintaining pressure and containing contaminants.

Design Highlights for Enhanced Food Processing Workflow

Intelligent Control & Safety: The electronic door interlock system prevents both doors from opening simultaneously, preserving critical pressure differentials. The digital pressure gauge offers real-time filter status monitoring, while the UV sterilization function operates on a separate control for flexible decontamination cycles.
Superior Structural Design: The unit is constructed with a robust double-layer 304 stainless steel shell featuring internal radiused corners to eliminate hygiene dead zones. The high-efficiency airflow diffuser plate guarantees even air distribution, and the reinforced bottom perforated plate offers excellent load-bearing capacity and unobstructed air return.
Energy Efficiency & Ergonomics: The adjustable wind speed function allows facilities to reduce energy consumption by over 30% during low-activity periods. The unit operates at a low noise level (<65 dB), and the integrated LED lighting ensures clear visibility of all transferred items.

Critical Applications in Food Processing & Packaging

  • Transfer of Raw Ingredients: 
  • Packaging Material Introduction: 
  • Tool & Equipment Pass-Through: 
  • Waste & Byproduct Removal: 
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