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Cleanroom Door Systems Comparison
High Performance for Sterile Production Environments  

florida cleanroom systems 033    Cleanroom doors systems, whether metal, fiberglass or stainless steel form the first line of contamination control and pressurization control to minimize particulate intrusion or bioburden buildup. They must meet the task and perform locking and sealing repeatedly with low maintenance requirements while designed with profiles and edges that minimize gaps or crevices for minimal cleaning and wipe down.

    Quality cleanroom door systems have several constructions and designs that should be taken into consideration when selecting a cleanroom modular system or aftermarket door products.    

   Gasketing of door systems is the a line of defense against pressure loss and cross contamination between cleanroom zones. Cleanroom doors should be fully gasketed on all four sides with either an anti-microbial PVC or closed cell EDPM gasket material. The installation of the gasket material should be of mechanically fastened means and not reliant on adhesive backing material which will not hold up to repeated chemical wash downs. Doors should have minimum surface mounted hardware and if possible hardware should be of an anti-microbial material or coating. Hardware must preform flawlessly to assure door performance.  

   Sterility of cleanroom processes can be compromised by contact with door surfaces and may require the addition of automatic operators to assist in entry and egress. Doors must have minimum gaps or joints to assure cleanability and minimum maintenance requirements. Glazing systems should not allow cleaning agents to be retained in gasketing channels where pooling of any nature may harbor bioburden. Any areas on door systems that may be considered as particulate entrapment areas will constantly release particulates entrapped upon door operation.    

   Door composition and construction materials should always be of a non corrosive material or sufficiently coated with a protective coating that will withstand years of operation. Fiberglass reinforced plastics(FRP) are one door construction material that will withstand impact, can be anti-microbial treated and will require minimum maintenance. Metal doors of steel or aluminum rely on anodizing or enamel or epoxy coatings and must have a liberal use of stainless or copper kick plates, push plates, and hardware to avoid any wear on high contact surfaces from penetrating the coating. Once any coating is penetrated on a metal door system corrosion and release of particulates can begin immediately. Door integrity, appearance,  and operation should be checked on a regularly scheduled cleanroom maintenance inspection.   

   Replacement parts inventories of critical door components should be maintained the same as a critical parts inventory for other cleanroom equipment. Cleanroom doors are the most utilized and possibility the one item of any modular cleanroom system that will be constantly operated by cleanroom personnel. No matter how robust the hardware or installation failures will always happen. Door hardware is most susceptible to damage with process equipment relocation, cleanroom cart movements, and repeated shock from kicking or slamming due to pressurization. Failure of a door to latch or seal correctly must be remedied almost immediately to not compromise processes or pressurization of the cleanroom zone.  

   Consistency of door systems installed for a cleanroom environment can substantially reduce replacement parts inventories. Whether sliding, swing, bi-parting, or rotational operation utilizing the same style and manufacturer for all cleanroom doors will result in minimum maintenance and knowledge required for repair. All doors should have width and height dimensions to allow for process equipment or carts to be passed through with adequate clearances of the door and frame members.    


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Cleanroom Door Systems Comparison:
                               

Fiberglass(FRP)                        Metal
  • Anti-Microbial
  • Color Impregnated
  • Seamless Construction
  • Non Corrosive
  • Chemically Resistant
  • Impact Resistant
  • Light Weight Construction
  • Fire Rated up to 2 Hours
  • Sound Deadening
  • Welded Seams
  • High Security
  • Specialty Coatings
  • High Durability
  • Energy Efficient

Swing                                      Sliding
  • Initial Cost
  • Positive Gasketing
  • Minimal Hardware
  • Minimal Maintenance
  • Hi Speed
  • Minimal Clearances
  • 7' to 16' Widths
  • Single, Bi-parting, Telescoping
 
Manual                                    Automatic
  • Initial Cost
  • Maintenance
  • Security
  • Sterile Operation
  • Cross Contamination
  • Operational Widths

   Cleanroom door systems comparisons will differ greatly in non sterile or sterile cleanroom applications. The need for automatic operation may be required by sterile environments and the need to mitigate any cross contamination between cleanroom zones.  

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