## Solving a Static Electricity Problem when Applying Labels

A company was applying labels to their plastic containers.  The labels were 4” (10cm) wide by 9” (23cm) long in size with a protective backing.  The backing material had to be removed prior to applying the label to a 9” (23cm) tall container.  With their label applicator, the label would wrap around the container.  They started to see misalignment and wrinkles in the labels when they were applied.  For the nonconforming parts, they had to remove the label and clean the surface to reapply another label.  This was time-consuming and a pain in the neck.  Since winter is here in the Northern Hemisphere, the drier air makes static very easy to create and will cause issues.  They contacted EXAIR to ask about our Gen4 Static Eliminators.

With non-conductive materials like plastic and paper, static is easily generated; especially during cooler weather.  Static can be in a negative state or a positive state depending on the type of material.  With opposite charges, things are attracted to each other and will “stick” like magnets.  For similar charges, they will repel each other.  The higher the static charge, the stronger the force.  Static is generated from rubbing, hitting, and peeling which can cause electrons to be stripped from a surface.  For the customer above, the peeling away of the backing from the label caused the negative electrons to build on one surface.  And with the containers shifting, bumping and moving along the conveyor; static was also being generated.  Since like charges repel each other, the labels were not able to stay aligned and were creating bubbles on the surface.

When it comes to removing static, EXAIR is a leader in this market.  We have a large product line of different types of Static Eliminators.  Our design generates both positive and negative ions to remove any type of static charge up to 20 feet (6m) away.  In this application, I wanted to target two areas where static is present; the labels and the containers.  Since we could get close proximity to the label and the containers, I recommended using the Gen4 Ionizing Bars.  With a quick static decay rate, we can remove the static right before applying the label.  For this application, I recommended the model 8006 6” Gen4 Ionizing Bar and two model 8009 9” Gen4 Ionizing Bars.

EXAIR’s power supplies are what gives the Gen4 Ionizing Bars energy to create ions.  EXAIR offers two models of Gen4 Power Supplies; model 7960 which can power up to two Static Eliminator products and model 7961,  which can power up to four Static Eliminator products.  Since the Gen4 Ionizing Bars were mounted in the same area, the model 7961 Gen4 Power Supply was used to run three Ion Bars at once.  This helps to save money as they did not need to buy multiple power supplies.

Together, it was very easy to mount and start using.  The model 8006 was mounted right after the backing was removed from the label.  One model 8009 was positioned in the front of the container; and the second model 8009 was positioned in the back of the container.  Now they were able to remove all the static before the label was placed on the container.

EXAIR stocks lengths from 3” (76mm) up to 108” (2743mm), and we can ship a solution the same day.  When you are losing time and working hours due to static buildup like the company above, the Gen4 Static Eliminators can resolve it quickly and easily.

If you are having problems with static in alignment, jamming, contamination, or shocking staff; you can contact an Application Engineer at EXAIR.  The Gen4 Static Eliminators can remove the static and keep your process running smoothly.

John Ball
Application Engineer

Email: johnball@exair.com

## Conveyance Testing? We Can Do That!

Over the past month I have spoken with many customers who all had a similar concern.  Will the Line Vac actually convey my product?  Generally, the Application Engineer team can pool our experience together and get a pretty good feeling on if the product will be able to be conveyed the needed vertical and horizontal distance.  We can even give some estimates on what rate of transfer for the product.

In some cases though, the customer prefers to have some hard evidence to showcase to their leadership that the product will work and fill the need they have.  In those cases, as long as the product does not present a disposal hazard or respiratory hazard then we can probably take a small sample and do some testing then provide images, and possibly even some video.

We may not be able to set up the exact product path that your system will require, we can generally convey a simple vertical with some horizontal.  The list below gives just a few examples of the products we have tested:

• paper scrap
• medicine tablets
• ground rubber
• dry ice
• seasoning/spices
• die cut scraps
• steel shot
• tumbling media
• candy bars (These were delicious, please send more!)
• nutraceuticals
• plastic caps
• plastic parts
• packing peanuts
• coffee beans
• bolts
• springs
• Doo Hickeys (okay, maybe my daughters made me watch Little Mermaid recently.)
• sand
• nuts/seeds

The list could go on and on.  The point is, if you are questionable on how well a Line Vac would work with your product, don’t let that deter you from reaching out to us and speaking with an Application Engineer.   We’ve done lots of product testing, and we will all share our experiences with you.  Also, we have conveyed a Cincinnati-Style Chili 3-way.  You can see that in the archives under Will It Launch.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF