Softwall Cleanroom
Softwall Cleanroom
Softwall cleanrooms, often referred to as clean booths or portable cleanrooms, are built with lightweight materials and advanced air filtration systems to create contamination controlled local spaces with higher cleanliness, providing an adaptable and cost-effective solution for a variety of industries that need cleanroom environment.
Softwall cleanrooms feature easy to assemble, disassemble, and relocate. Whether you’re conducting sensitive manufacturing, assembly, or testing, they always offer the flexibility and performance you need to meet stringent cleanliness requirements.
They adopt soft PVC strips or ESD curtains that provide a clear and protective barrier against airborne particles. Different from traditional cleanroom enclosures, portable cleanrooms are designed for versatility and rapid deployment, making them ideal for dynamic or temporary setups.
As one of leading manufacturers of modular cleanroom in China, KINROM can make a tailored solution of softwall cleanrooms to comply with requirements in variety of industries.
Softwall Cleanroom Features
- Modular Design: Aomar portable cleanrooms are available in a wide range of sizes and configurations to suit your specific needs. The modular design ensures quick installation and the ability to reconfigure or expand as your operations requirements.
- Softwall Enclosure: Durable, flexible PVC strips and ESD curtains create a semi-enclosed workspace while allowing easy access.
- Advanced Air Filtration: Equipped with HEPA or ULPA filters, our portable cleanrooms provide particle removal efficiency that up to 99.99% for ISO Class 5–8 environments. Laminar airflow generated ensure consistent cleanliness throughout the workspace.
- Stable and Durable: Constructed with robust aluminum or stainless steel frames, our cleanrooms are lightweight yet sturdy, ensuring structural integrity and long-term durability.
- High Recycle Rate: All materials are recyclable, which helps to reduce the cost greatly when it is required to be relocated.
- Mobility Options: Optional casters allow for easy mobility, making our portable cleanrooms suitable for facilities that require temporary or repositionable clean zones.
Softwall Cleanroom Specifications
| Model | CB-1500 | CB-2000 | CB-3000 | CB-5000 |
| External Size(mm) W*H*D | 1500*2000*2200 | 2000*3000*2200 | 3000*4000*2200 | 5000*5000*2200 |
| Frame Material | Aluminum Alloy / Stainless Steel / Painted Steel | |||
| HEPA Filter Size(mm) | 610*610*69 | 1220*610*69 | 1220*610*69 | 1220*610*69 |
| Purification Efficiency | 99.995% at 0.3μm | |||
| Air Volume(m³/h) | 4000 | 5040 | 7560 | 12600 |
| Air Speed | 0.2-0.6m/s, Average Speed 0.45m/s | |||
| Noise(db) | ≤65 | |||
| Net Weight(kg) | 320 | 400 | 550 | 800 |
| Customized design for size, material, cleanliness level and other specifications is available, click the button below for asking a tailored solution. | ||||
Softwall Cleanroom Components
1. Main Frame
There are three optional materials: aluminum alloy, stainless steel and painted steel square tube. The frame structure is stable, beautiful, rust-free and dust-free.
2. Air Purification System
Mainly composed of FFUs(Fan Filter Units) and HEPAs. FFU adopts high-quality centrifugal fans with features of long life, low noise, maintenance-free, and stepless speed control. The purification level can reach from Class 100 to Class 100K.
3. Enclosure System
The enclosure system can be optional with PVC strips, ESD curtains or acrylic plates, which have good performance of anti-static, high transparency, dust prevention.
4. Ceiling System
The ceiling system is mainly composed of FFU and cover plate, and sealed by 0.3mm anti-static mesh curtain.
5. Other Accessories
Accessories for connecting square tubes, and other optional accessories like LED lights, anchor bolts, casters.
Softwall Cleanroom-The Complete FAQ Guide
Learn more about the softwall cleanroom with this guide. We prepare some questions and answers for you.
What Is A Softwall Cleanroom?
A softwall cleanroom, often referred to as a clean booth or clean tent, is a localized purification enclosure designed to provide a controlled clean environment within a larger uncontrolled space. It consists of a frame—typically made of aluminum alloy or stainless steel—enclosed with anti-static soft vinyl curtains (such as PVC or transparent strip curtains).
The clean space is maintained by one or more Fan Filter Units (FFUs) installed in the ceiling, which deliver HEPA or ULPA-filtered unidirectional airflow downward. This creates a positive-pressure environment that effectively reduces airborne particles and microbial contamination.
Ideal for applications where full-scale hardwall cleanrooms are not feasible, softwall cleanrooms offer a cost-effective, modular, and quickly deployable solution for processes requiring ISO Class 5 to ISO Class 8 environments. They are commonly used in industries such as pharmaceuticals, electronics assembly, biotechnology, and medical device manufacturing.
Picture 1 Softwall Cleanroom
What Is the Working Principle of A Softwall Cleanroom?
A softwall cleanroom operates on the principle of localized, unidirectional airflow and positive pressure to create and maintain a clean environment within a confined area.
The ambient air is drawn by top-mounted fan filter units (FFUs) and purified by filters that remove particles such as dust and impurities. After the purification, the air is supplied uniformly into the workspace in a vertical laminar flow pattern. Simultaneously, contaminated air within the work area is expelled from the bottom of softwall cleanroom or through the return air system, enabling continuous circulation and purification. This cycle consistently maintains a clean internal environment, achieving cleanliness levels from ISO Class 5 (Class 100) to ISO Class 8 (Class 100,000).
Picture 2 Softwall Cleanroom Working Principle
Its functionality can be broken down into four key mechanisms:
1. Air Filtration & Purification
The heart of the system is the Fan Filter Unit (FFU) mounted on the top frame.
The FFU draws ambient air from the surrounding room through a pre-filter that captures larger particles.
This air is then pushed through a HEPA or ULPA filter that removes 99.97%–99.999% of airborne particles as small as 0.3–0.12 microns.
The filtered clean air is delivered vertically downward into the enclosed space.
2. Unidirectional Downward Airflow
The HEPA/ULPA filters create a laminar (unidirectional) flow of clean air, moving uniformly from top to bottom.
This constant downward flow pushes airborne contaminants toward the floor and away from critical processes or products.
3. Containment via Soft Curtains
The transparent PVC or vinyl curtains enclose the working area, preventing unfiltered air from entering horizontally.
While not hermetically sealed like hardwalls, the curtains serve as a physical barrier to minimize air mixing and external contamination.
4. Positive Pressure & Air Exhaust
The continuous supply of filtered air creates positive pressure inside the booth.
This pressure forces clean air out through small openings or gaps at the bottom of the curtains, preventing unfiltered air from flowing inward. Some designs include return air grilles or openings near the floor to allow air to cycle back into the surrounding room or, in more advanced setups, be partially recirculated through the FFU.
What Are Features of A Softwall Cleanroom?
Softwall cleanrooms offer a flexible and economical solution for localized contamination control. Below are their defining characteristics:
1. Cost-Effectiveness
Significantly lower initial investment compared to hardwall cleanrooms.
Reduced installation and modification costs due to modular design and reusable components.
2. Rapid Deployment & Flexibility
Pre-engineered modules enable quick assembly and disassembly (often within few days).
Relocatable and reconfigurable to change production layouts or R&D needs.
3. Modular & Scalable Design
Components (frames, curtains, FFUs) are standardized and interchangeable.
Supports expansion or downsizing with minimal disruption to ongoing operations.
4. Basic Cleanliness Control
Typically achieves ISO Class 5 to ISO Class 8 cleanliness using HEPA/ULPA-filtered unidirectional airflow.
Effective for isolating specific processes or equipment from particulate contamination.
5. Transparency & Accessibility
Transparent PVC curtains provide visual access to the interior while maintaining separation.
Magnetic or zippered openings allow easy entry/exit without compromising cleanliness.
6. Limited Environmental Control
Relies on external HVAC systems for temperature and humidity regulation.
Less capable of maintaining strict pressure differentials compared to hardwall designs.
7. Space Efficiency
Ideal for creating small-scale clean zones within larger uncontrolled environments (e.g., warehouses, production floors).
Minimal footprint with maximum utilization of available space.
8. Low Maintenance
Smooth surfaces and simple structures facilitate easy cleaning.
Filter replacement and component repairs are straightforward due to modularity.
What Are Key Application Areas of Softwall Cleanrooms?
Softwall cleanrooms are widely adopted across various industries due to their cost-effectiveness, flexibility, and rapid deployment. Below are the primary sectors where they offer ideal localized clean environment solutions:
1. Electronics and Semiconductor Assembly
Applications:
Soldering, assembly, and inspection of printed circuit boards (PCBs)
Production of microelectronic components and hard disk drives
Back-end semiconductor packaging and testing.
2. Medical Device Manufacturing
Applications:
Assembly, packaging, and inspection of non-sterile medical devices (e.g., syringes, catheters, surgical instruments).
Clean assembly of medical equipment.
3. Pharmaceuticals and Biotechnology
Applications:
Weighing, granulation, tableting, coating, and packaging of solid oral dosages.
Filling and packaging of cosmetics and health supplements.
R&D and sample preparation.
4. Industrial Manufacturing and R&D
Applications:
Small-scale R&D, pilot production, and prototyping of precision instruments, optical lenses, lithium batteries, and nanomaterials.
Clean assembly of precision components in aerospace.
5. Food and Health Product Industries
Applications:
Filling and packaging high-end health products, infant formula, and sterile beverages.
Food testing laboratories.
How to Install A Softwall Cleanroom?
Installing a softwall cleanroom is a systematic process. Proper installation is essential to ensure optimal performance and long-term reliability. Below is a general guide to softwall cleanroom installation, along with recommendations from KINROM:
Phase 1: Pre-Installation Preparation
Space Dimensions: Ensure the selected area has sufficient length, width, and height. Allow extra space for equipment access and maintenance.
Floor Condition: The floor must be flat, solid, and clean.
Phase 2: Frame Assembly
1. Start with the base frame. Use a measuring tape to ensure the frame is square by comparing diagonal lengths.
2. Erect vertical columns and connect the top frame. Use a spirit level to ensure the structure is perfectly horizontal and vertical.
3. Tighten all connectors securely to ensure a rigid and stable structure.
Phase 3: FFU & Ceiling Installation
1. Mount each Fan Filter Unit (FFU) into its designated position on the top frame according to the layout diagram.
2. Connect power cables between FFUs. Do not power on at this stage.
3. Install ceiling panels (if applicable) after FFUs are in place.
Phase 4: Enclosure & Accessories
1. Attach anti-static PVC curtains from top to bottom around the frame.
2. Ensure sufficient overlap between curtains. Magnetic strips or embedded tracks are commonly used to ensure a tight seal.
