Contaminants And Wiping Theory-Considerations for contaminant

Contaminants And Wiping Theory-Considerations for contaminant removal

l Cleanroom contaminants

l Sources of contamination

l Particle adhesion mechanisms

l Contaminant removal methods

l Considerations for contaminant removal

l Choosing the right tools and methods

l Myesde Cleanroom Wipes

Considerations for contaminant removal

l Wiper Material Selection

v Materials

v man-made

v natural fibers

v Combinations

       polyester               cotton                knit                  

                    woven                                      non-woven

l What Material To Use?

v Sealed-edge polyester knit is optimal

1 = best 

3 = worst 

l Type of Edges

v cold-cut 

v heat-cut 

v laser-cut 

v 

Sealed boarder (Ultrasonic)

         Cold cut              heat-cut

       laser-cut            Sealed boarder 

No sealing method is perfect!

There are many characteristics of wiping and mopping products that affect their ability to clean a surface.

v Particle entrapment  

v Surface contact  

v Solubilization of residues  

v Sorbency  

v Product cleanliness

v Contaminant redeposition  

v Cleaning solutions/solvents  

Wiper Structures

Open- cell Urethane Foam                                   Knitted Polyester Monofilament                                      Woven Plain wipes

Nonwoven Polyester/cellulose Staple Fiber    Nonwoven Polyester Monofilament

v Particles

v Fibers

v NVR

v Ion

v Sorbency

v Sorbency Rate

v Wicking Rate

v FTIR

v Basis Weight

v Thickness

l Wiper cleanliness  

v Wiper cleanliness is critical to minimizing deposition of new contaminants onto surfaces during wiping

v There is no such thing as a contaminant-free wiper

v Wipers made of synthetic fibers are generally much cleaner than wipers made of natural fibers

If you have any interested in or want to get more details,

pls just contact me anytime!

Ms.julia

Tel/whatsapp/wechat: +86 18101547855

Email: licui@cldzcl.com