Static Eliminators Essential To Packaging Operations

I had a headache the other day. Of all the things that can make me grumpy, nothing makes me grumpier than a headache. Luckily, there are over the counter medications that work quite well, and quickly, to boot.  And I had a brand new bottle of them in the cabinet.

When I opened the package and removed the tamper-resistant plastic band on the cap, it stuck to my hand when I went to drop it in the trash can.  This raised my grumpiness just a touch.  I shook my hand to try and get it off, and it fell behind the trash can.  My grumpiness elevated a bit further.  I hit my head (you know, the one I was trying to cure the pain in?) on the counter while bending over to retrieve it.  That activated my grumpiness alarm, which sounds just like mild profanity.  My wife silenced that alarm pretty quickly.

The plastic band stuck to my hand, of course, because it’s made of a non-conductive material, and peeling it from the bottle cap, which is also a non-conductive material, generated a static charge.  As a subject matter expert on the topic of static elimination, I am quite familiar with the phenomenon, the problems it causes, and, more importantly, the numerous ways to apply solutions to those problems:

  • One such solution was related to my problem with the tamper-resistant seal.  A mouthwash manufacturer was actually having trouble getting those seals ONTO the bottles on their packaging line.  The bottle caps themselves had so much static charge on them that they repelled the seal as the machine tried to drop it in place before heat shrinking it.  An Ion Air Jet solved the problem:
Gen4 Ion Air Jet ensures bottle caps & necks are static free for application of tamper resistant seals.
  • Speaking of plastic bottles, the finishing process after extrusion can leave small bits of plastic particulate behind, and static charge can keep them on the bottle.  This was a great fit for an Ion Air Cannon:
Gen4 Ion Air Cannon eliminates static & dust prior to filling bottles.
  • Sometimes, air flow isn’t necessary, like in the case of a film that is eventually made into single-use condiment packages, with a static charge that was high enough to fry the print heads that apply the label text.  An Ionizing Bar protects those print heads:
Initial static charge of almost 17kV (left) is almost completely dissipated by the Ionizing Bar (center) to just 0.04kV (right)

EXAIR Corporation’s Gen4 Static Eliminator product line offers a wide variety of options for total static control.  If you need to get rid of nuisance shocks, clinging dust, tearing, jamming or curling of material, misfeeding sheets or rolls, or any of the numerous other problems that static charge can cause, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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What is a Decibel Level?

Decibel level also known as dBA, is how the industry measures sound intensity’s effect on the human ear and is an important value when discussing noise exposure for employees and operators within manufacturing. Manufacturing personnel can be at risk for hearing damage when exposed to high decibel levels if the proper precautions are not taken. For reference, 0 dBA is the softest level that a person can hear. Normal speaking voices are around 65 dBA. A rock concert can be about 120 dBA.

Sounds that are 85 dBA or above can permanently damage your ears. The more sound pressure a sound has, the less time it takes to cause damage. This damage occurs within a sensitive part of our ear called the cochlea, which contain thousands of hair cells used to allow our brains to detect sounds. For example, a sound at 85 dBA may take as long at 8 hours to cause permanent damage, while a sound at 100 dBA can start damaging hair cells after only 30 minutes of listening.

OSHA Max Noise Exposure Chart

The Center for Disease Control (CDC) estimates that 22 million workers are exposed to potentially damaging noise at work each year. Whether you work near machinery, at a sports venue, on a tarmac, or operate a jackhammer—hearing loss is preventable.

Noise may be a problem in your workplace if you:

  • Hear ringing or humming in your ears when you leave work.
  • Have to shout to be heard by a coworker an arm’s length away.
  • Experience temporary hearing loss when leaving work.

If you need to raise your voice to speak to someone 3 feet away, noise levels might be over 85 decibels. Sound-measuring instruments are available to measure the noise levels in a workspace.

The first step to lowering your sound level is to take a baseline reading of your various processes and devices that are causing the noise. EXAIR’s Sound Level Meter, Model 9104, is an easy to use instrument that provides a digital readout of the sound level. They come with an NIST traceable calibration certificate and will allow you to determine what processes and areas are causing the most trouble.

From there, EXAIR has a wide range of Intelligent Compressed Air Products® that are designed to reduce compressed air consumption as well as sound levels. For noisy blowoffs where you’re currently using an open-ended pipe or a loud commercial air nozzle, EXAIR’s Super Air Nozzles are the ideal solution. Not only can they pay for themselves over a short period of time time due to compressed air savings, but your operators will thank you when they’re able to hear later on in life!

 EXAIR has the tools you need to reduce sound level in your processes. If you’d like to talk to an Application Engineer about any applications that you feel could benefit from a sound reduction, give us a call.

Jordan Shouse
Application Engineer

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What’s So Great About The Gen4 Ion Air Cannon Static Eliminator?

It’s bitter cold this week in southwest Ohio, and one of the consequences of that is dry air in heated indoor areas.  If you’ve walked across a carpeted floor and pet your cat (like I did the other day), you (and your cat) may have experienced a phenomenon known as dissipation of static electricity.

In my defense, Elle The Cat often looks down on me just like she does on Rocky The Dog. Neither of us care.

The relatively low static charge you pick up by shuffling your socks across the rug is pretty small, compared to the charge generated by:

  • High speed rolling & unrolling of plastic film on a shrink wrapper.
  • Plastic pellets traveling through a conveyor system to an injection molding machine.
  • Slitting or trimming of paper, laminates, sheets, etc.
  • Removing protective layers between sheets of delicate materials.

And these can cause issues year-round.  The problems associated with static charge in these situations include:

  • Nuisance shocks to operators.
  • Dust and debris clinging to product finishes and surfaces
  • Product clumping or clinging while in transit.
  • Thin sheets tearing, jamming, folding, or misfeeding.
  • Disruption of sensitive electronic sensors, switches, etc.

EXAIR Corporation has a variety of Static Eliminator Product solutions, depending on the specific needs of a particular application.  To answer the question in the title of this blog, though, the Gen4 Ion Air Cannon is quite versatile, and is often considered alongside our other products.  For example:

  • Gen4 Super Ion Air Knives come in lengths from 3 inches to 9 feet.  If you have a wide web, sheet, or plate to remove static charge from, they’re the best choice, hands down.  For narrower widths, or situations where you have to blow in from the side or at a certain angle due to physical interference, the Gen4 Ion Air Cannon’s small footprint and adjustable mounting bracket provide a great workaround.
  • Gen4 Ion Air Jets generate a focused, concentrated flow of ionized air, for spot cleaning of smaller parts.  Its compact design is ideal for installations in close quarters.  If you have some room, the Gen4 Ion Air Cannon actually uses less compressed air to generate a higher ionized air flow…and it’s quieter, to boot.
  • Gen4 Super Ion Air Wipes are made to blow off and remove static from pipe, cable, extruded shapes, etc.  They come in 2″ or 4″ diameters.  If your product is larger than that, an array of Gen4 Ion Air Cannons can accommodate that.
  • Gen4 Ionizing Points are often installed in ducts to ionize existing air flow.  Arrays of two, three, or four are suitable for ducts up to about 6″ in diameter, depending on the air flow rate.  For larger ducts (or very high flow rates,) Gen4 Ion Air Cannons can be installed to blow into a ‘Y’ connection in duct walls.

Regardless of the nature of the application, if you’ve got a static problem, EXAIR has a solution!

These are just a few of the myriad Static Eliminator applications that EXAIR Corporation has successfully solved over the years.  Many times, the details of the application make one particular product the clear choice.  When there ends up being more than one worth consideration, one of the others is usually the Gen4 Ion Air Cannon.

Again…that’s based on the details of the application, and we’re here to help with that.  If you’ve got a static problem, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Five Things To Know About Single Acting Reciprocating Compressors

With the development of highly efficient air compressors, there’s still a place for the most basic design: the single acting reciprocating compressor.  When the piston moves out of the cylinder, it draws air in, at atmospheric pressure.  When it moves in to the cylinder, it reduces the volume that air occupies, increasing its pressure.  These machines are durable, effective, relatively inexpensive, and pretty easy to maintain.  Here are a few interesting things to know about them:

1. Popularity. Because of the simplicity of their design, they’re the most common air compressor in the 10HP and under sizes.  You can get them from a number of sources, and they’re not going to set you back as much as some other types.
2. Oil free air (part 1) While the most basic design uses oil to lubricate the piston rings in the compression cylinder, oil-less reciprocating compressors have cylinders with very smooth (and hard) bore surfaces, like nickel or chrome plating. A series of guide rings around the whole circumference of the piston prevent metal-to-metal contact, eliminating the need for liquid lubrication in the compression cylinder.
3. Oil free air (part 2) If oil in your compressed air is a problem, an oil-free (as opposed to oil-less) compressor is another option. While an oil-less compressor doesn’t use lubricant for the piston movement, an oil-free compressor’s moving parts are oil lubricated, but that oil is kept away from the compression cylinder(s) with connecting rod(s) so that the oil is confined to the lower moving parts…the crankshaft and bottom ends of the connecting rods, and away from the pistons & compression cylinders.
4. Foundation. Reciprocating machinery, as the name implies, has parts that move back and forth. The sudden reversal of direction of heavy metal pistons & rods, dozens of times a minute, means that their operation is inherently unbalanced. This out-of-balance condition, though, can be absorbed by properly securing the compressor to a properly prepared foundation.
5. Higher pressures. If your facility’s compressed air usage primarily entails pneumatic tools, cylinders, and blow off devices like air guns, the system header pressure is likely maintained at around 100psig. While a one-stage reciprocating compressor is usually rated for discharge pressures up to 125psig, a second stage can increase that to 175psig. Multi-stage compressors are used for applications that require up to 3,000psig compressed air. Examples of these are scuba breathing air, pneumatic excavators, and my personal favorite: ballast tank blowing air, used to surface a submarine.

4-stage reciprocating compressors charge 3,000psig air tanks that are used to rapidly push water from a submarine’s ballast tanks to create positive buoyancy.  Because keeping your ‘diving-to-surfacing’ ratio at 1:1 is important.

At EXAIR Corporation, helping you get the most out of your compressed air system is important to us.  If you’ve got questions about how to do just that, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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