Realistic Product Expectations: How long should your hot glue machinery last?
When evaluating equipment, it is important to understand life expectancy. Life expectancy of equipment is dependent on several key factors, including but not limited to, daily usage, preventative maintenance, and daily operation. This goes for equipment in packaging lines as well. The reason why most glue systems get termed “End of Life” is not because they have stopped working and are not fixable, but because they either look to be not fixable or no one knows how to fix them properly. Whether your technicians do not fully understand the equipment, or the equipment has not been maintained and may look bad, that does not mean it is time to EOL your hot glue system. The question of “How long should my melter last?” can vary based on your company’s maintenance schedule.
With correct preventative maintenance and usage of the system, your hot melt tank can last decades. However, that doesn’t always happen. Preventative maintenance is rarely practiced and when it is, the components that are being replaced are often reinstalled incorrectly. Potentially worsening the problem and creating even more issues. That is why it is important to inquire with the OEM or request installation instructions with each component. Educating yourself about the equipment you are running is key to maximum runtime on your packaging line.
That being said, failing to follow installation instructions on equipment does not mean that equipment will not work. It will most likely run for a short time until it then fails again. For example, if you were to install the pump shifter incorrectly, without the fork on the correct placement of the shaft, the shifter will still shift, but it will shorten the pump stroke and over time it will stop up. Same thing goes for installing at the correct In/lbs torque. There are specific instructions that come along with every shifter specifying the exact In/lbs torque requirements, which is usually not followed. The shifter will still run, but the air pressure over time will cause potential issues in the seals and how the shifter shifts.
Regarding hot melt systems components, such as hoses and guns, the number of hours you run the system will help you to determine the EOL for those components. In almost every case the hose and gun will run for years without losing their ability to hold heat. The problem you will run into with guns will be clogging which is also preventable by running and regularly changing in-line filters.
If you think that your hot melt equipment is at its end of life, please call or email a Universal Systems SE technician and we will help you understand what products you need to get back up and running at full capacity.
Hands On Hot Melt Machinery vs. Remote Access Equipment
The hot melt industry has been changing over the years and most recently has made a push for remote access machinery, or even Bluetooth enabled equipment. At Universal Systems, we believe in the old school “hands on” approach to high speed packaging. Having a human component to troubleshoot and catch issues before they even start, in our opinion, is the only way to effectively manage your manufacturing systems. However, some of our competitors are moving toward human-less systems, where one person can manage the line from afar. With the equipment telling the person what they need and when they need it. There are pros and cons to each.
Here are the reasons why we feel like the “hands on” approach to line operators is still important.
Experience
Real time on the spot decision making based on experience will always be irreplaceable.
Troubleshooting
If something were to happen on the line, a line operator can real-time troubleshoot and fix the issue faster and more efficiently than a computer.
Eyes on the Problem
Putting your eyes on the actual problem helps you to better understand what the issue is and how to fix it. Reading an error code or getting an alert that you then must spend time researching is not always the best solution. If you can see why the line is down, then you have a better chance of getting it fixed and back up and running quickly.
Makeshift Fixes
Not that we are a proponent of makeshift fixes, sometimes it is necessary. With someone on the line, they can quickly switch out a filter or unclog a nozzle without there being much downtime. If you are working remotely, you would then have to call down to someone on the floor to make the switch, which could take more time than your operation can afford.
Overall, while computers and technology can be helpful and advance the industry, nothing can effectively replace a valuable line operator with experience and the ability to think on their feet. The same goes for technical support. It is invaluable to be able to work with a company who can offer you real-time technical support. At Universal Systems, you can always speak to someone who can help. We don’t send you through teleprompts or force you to send an email that may or may not get answered in a timely manner. We pride ourselves in our response times and helping our customers who are on the floor and putting in the work to get their equipment running at maximum capacity. For any technical support or customer services give us a call at (561) 272-5442 or email sales@ussefl.com.
The Lost Art of Troubleshooting
Troubleshooting is most definitely a lost art. In today’s throwaway society, we have lost touch with our ability to fix things ourselves. That is true in all aspects of business and most definitely prevalent in the packaging world.
For us, in the hot melt application industry, we have seen it get progressively worse over the last few years. Ever since the pandemic, it seems that most hot melt manufacturers no longer stand behind their equipment and help with troubleshooting. Industry giants, like Nordson, want you to buy new machines, they don’t want you to fix what you already have. Here at Universal Systems, that is the exact opposite of our company culture. We are here to help, we believe in our equipment, and that the art of troubleshooting isn’t something that should be lost forever.
That being said, troubleshooting a pump not running doesn’t mean hitting it with a wrench until it moves. There is an art to it. Using deductive thinking to pinpoint the cause of the issue versus just replacing each piece until it starts working again. For example, your line is running a multi-module gun, and the last module on the line isn’t getting glue. In order to figure out where the real issue lies you first need to make sure all of your key points are met. First, is your glue heated to the correct temperature? What is the consistency of the glue out of the first module in the gun versus the second, etc.? If the gun isn’t heated to temperature, your glue’s viscosity may not be correct to run through the manifold to all modules. Second, have you checked your in-line filters? There could be a clog in the filter not allowing enough glue to flow into the gun to get to all modules. There could also be a clog in manifold itself. Once you eliminate all potential variables, you will be able to deduct what your actual problem may be.
Training on equipment is also very important in practicing the art of troubleshooting. If you have line operators that understand how your equipment works, they will be better equipped to troubleshoot potential issues. If your line operators or floor managers are not fully versed with your equipment, you should be able to call the equipment manufacturer to go through troubleshooting steps with you. At Universal Systems, we pride ourselves in our customer service and ability to walk any customer through troubleshooting. If you have a manufacturer, like Nordson, that will not take that time with you, maybe it’s time for a change to USSE.
How Dirty Air Impacts Your Pneumatic Systems
Pneumatic hot melt systems are run by air in both the pump and the applicator guns. One of the most important ways to ensure the longest run time out of any pneumatic system is to make sure that the air is clean and dry. That can be easier said than done. Most all packaging facilities have oil, water, or debris in their air. That is just the way it is. Some factories will install air cleaning systems and then add lubricators to lines to ensure that other equipment that requires oil runs smoothly. But even with the most expensive and elaborate air filtration system, there will always be some type of substance that gets by and can lead to issues in the pneumatic pumps of hot melt units. The simplest solution is to install an oil removal filter regulator to the air line running to the pump.
Oily air is our most commonly found issue inside facilities that have pumps stop up. The reason is because the shifters are manufactured with very specific tolerance clearance between the shifter spool and sleeve. This design is a necessity in order to get the pump to shift. Too much clearance and the air will just blow by the spool, never building up enough air pressure to pump. Too little clearance and the shifter will jam. That being said, if you have oily air or dirty air being run through the shifter, over time, that will cause a film to build up inside the shifter and cause a jam. Depending on the amount of oil or dirt in your air, and the number of hours the systems is run for, will determine how long this will take to happen. However, if you feel like your facility air is questionable, we suggest that you use the oil-removal filter regulator to prevent any shifter stop ups.
Another pump issue that can be caused by dirty or oily air is that it can get into the air motor and damage the rulon seals. The seals need to be tight to snuggly move up and down the air motor and if they get damaged by oil or dirt, that can lead to your pump not efficiently pumping. These seals can be replaced over time and should be checked every 2,000 hours.
Universal Systems offers pump rebuild kits for the seals, as well as sells the shifter valves in case you ever run into a pump issue caused by dirty, oily air. For more information on our pump rebuilding services, or for any technical support you might need, please call (561) 272-5542 or email sales@ussefl.com.
Under Pressure: How changing air pressure impacts your hot glue lines
Universal Systems manufactures pneumatic hot melt systems, which means that our equipment operates via air pressure. It is important to understand how air pressure can put stress on equipment and why the correct pressure points are essential to run a consistent, well-maintained hot melt system.
The way that a pneumatic hot melt system works is that an airline goes into the pump, to move the pump shifter, air motor and pump piston up and down to pump the glue from the tank, through the manifold, through the hoses, into the guns and onto the boxes. There is also going to be another air line into the guns to get the module pistons to open, apply the glue, and in some cases there will be an additional air line the air to close the pistons.
Let’s start with the air pressure to the pump. The air pressure to the pump is very important and should always be set between 20 psi – 40 psi, with an ideal setting in the middle at 30 psi. If your technician thinks the pump is running too fast and lowers the psi to under 20, then the pump might not have enough pressure to move the shifter. In most cases, a pump will run at as low as 18 psi. If your technician comes to you and states that the pump was running too slow, so they increased the air pressure to over 40 psi, that could cause damage to the seals inside the pump’s air motor. It is important to note that if the air pressure on the pump is set to 40 and the pump is still not pumping efficiently, then there is another issue at hand. Most likely there is dirty air inside the shifter or a clog in the tank filter. The air pressure should never be increased to fix other issues stopping up your pump.
The second air pressure point in your hot melt system is at the applicator gun. The air going into the gun should be set at a minimum of 60 psi. In most cases, 60 is the perfect setting for the guns. If your technician tells you they need to set the psi higher to get the guns to fire, then there is a clog in the in-line filter and that filter should be replaced. If the psi to the guns is anything higher than 80, you could blow a seal on the module and have issues with application.
If you have any questions about air pressure, please call us at (561) 272-5442 or email sales@ussefl.com.
Cold Weather Impacts Your Hot Glue
Most facilities are located in parts of the US impacted by the cold weather months. As the weather gets colder, so does the interior of the factories where most packaging lines operate. It seems like common sense that as the environment around your hot melt system gets colder, so will your hot glue unless you increase the temperature. Below are a few key factors to realizing you need to up your temperature.
Hot Melt Consistency
Hot melt consistency is the number one problem in most high-speed packaging lines during the winter months. This includes not only the consistency of the glue within the heated reservoir, but also the consistency of the glue to stay at temperature as it travels down that line. Just because your glue looks viscous inside the pot, doesn’t mean it is holding the same viscosity throughout the travel process. If your glue looks stringy or your guns are not firing consistently, then you most likely have a glue temperature problem. Try increasing the temperature of the tank, hoses and guns by 15 degrees. Please note that your hoses and guns should already be set 15 degrees higher than your tank. A minor adjustment like this will not char your glue, but should help keep it consistently viscous throughout the travel process.
Locate Cold Joints
Another important task would be to inspect your system setup for any cold joints. A cold joint would be any unnecessary extensions that you have added throughout the adhesive application process. Most cold joints are found on older machines that use larger sized extensions and filter housings. The more cold joints on the system, the more inconsistent the glue will heat and stay heated throughout the entire application process. If you cannot eliminate cold joints, increasing the temperature settings of the tank, hoses and guns will be helpful.
Location of your Line
One of the most important things to look at is where your packaging line is located within your facility. Most melters are located at the end of the line, which leaves them close to an exterior wall, door or window. The cold temperature outside could be impacting, not only the viscosity of your glue, but the heating time of your glue and its adhesion ability. Every time your line operator opens the fill door on the hot melt tank, the external air hits the existing glue and cools it off. Even if the lid on your tank is only open for a few minutes, that could impact not only the current glue in the tank reservoir, but the glue you are adding to the tank. If your glue pellets are colder than normal, it will take a longer amount of time to heat them. Since you cannot move the line, increasing the set temperature of your tank, hoses and guns will help eliminate glue inconsistency during the winter months.
If you have any questions about how to reduce the impact of winter weather on your hot melt system, please reach out to a technical rep at sales@ussefl.com.
Universal Systems Plug & Play Machinery
With what some industry professionals are calling “The Great Resignation” driving the packaging industry, it is so important to have equipment that is easy to use and operate. Recent studies report that the labor shortages in the packaging industry are due to employees not returning to work after Covid-induced shutdowns, as well as the increase in quit rates with most new employees not lasting longer than a month. Food industry production lines are reportedly standing idle because of lack of staffing where processors specifically pinpointed high retirement rates. This is a hard reality for many CPGs, and consumers are seeing this direct result in our local grocery and retail stores.
With over 40 years of experience in the hot melt packaging industry, Universal Systems is here to help. We have worked with hundreds of new maintenance managers and plant managers to help them learn about the equipment they are running. Whether they are running a competitor tank with our USSE components or our ProBilt system, we have the skills and knowledge of both old and new equipment to help relieve some of the stress that many companies may be feeling due to the loss of their most experienced workers.
Many CPGs also cite a lack of skilled labor capable of operating and troubleshooting complex packaging machinery. This is why Universal Systems’ line of ProBilt equipment is the perfect match for these end users. Our ProBilt equipment is in fact plug and play, with the easiest controls in the industry and the most flexibility by offering up to a 4-hose capability on all tanks. While many of our overseas manufactured competitors spent the last five years releasing “upgraded” equipment, they have lacked the foresight to see that they have ultimately overcomplicated the machinery for end user operators. Universal Systems’ ProBilt tanks have not changed much in the last 20 years. We have continued to manufacture our easy to program Accuscan control board and standardized components that we have prided ourselves on. Here at Universal Systems, we believe in quality, longevity and sustainability. Our products have proved time and time again that they work hard, for a long time, and without much training needed.
In addition, CPGs have been requesting more online videos and tutorials to help them train their new workforce on the machinery in their packaging lines. Universal Systems has listened to this call and we offer videos online on how to set melter temperature, as well as how the setback functionality on our tanks work.
We are here to support all of our customers, both old and new, as they navigate through their workforce troubles. By stocking over 10,000 items, we also help keep our customers up and running so you don’t have to wait out long lead times for standard operating equipment.
For more information about Universal Systems and our line of ProBilt products, please reach out to sales@ussefl.com or call (561) 272-5442.
Best Practices to Ease Supply Chain Burdens
It is no secret that everyone is experience supply chain issues this year. While there may be no end in sight, Universal Systems can only try and help ease the burdens on our end users. Below are a few of the best practices that we have implemented that we can recommend for our customers.
Keep an Open Line of Communication
With several of our competitors experiencing supply chain issues due to their overseas manufacturing and shipping issues in the current cultural climate, Universal Systems, being a USA manufacturer has received a lot of new business from large end users of hot melt equipment who would normally be buying from the big-name brand manufacturers. With the new influx of business, we have been open and honest with customers as to what we stock and what we make custom. If a new customer who is used to buying from Nordson calls and asks us lead time on standard stock items, we are happy to communicate that we can ship same day. However, if they have a custom gun or hose, we are honest regarding lead time and ship dates, normally 3-5 business days.
Plan Ahead
It is so important for companies to try and plan ahead with their inventory. While we realize this may be hard for many buyers due to lack of budget or their inability to get “out of the weeds” from being so far behind during Covid lockdowns, it is the only way to ensure there is no downtime on your packaging lines. Universal Systems offers all of our customers a preventative maintenance schedule and inventory recommendation list, so that you know what to keep on the shelf based on the equipment you are running.
Try New Products
Many of us get stuck in our ways and don’t realize there are other options out there that might improve our operations or way of doing business. Now that some large brand name companies, who have spent years manufacturing overseas, are feeling the crunch of no inventory due to low supply chain, many packagers should see this as an opportunity to work with Universal Systems. We have been manufacturing hot melt equipment in the USA for over 40 years and are well versed in packaging line needs and set ups. We manufacture most of the same products as our largest competitors and stock over 10,000 items at all times.
Think Outside the Box
With over 40 years of experience in packaging equipment, Universal Systems’ technicians are most skilled in thinking outside of the box. Whether it is troubleshooting an issue with an old machine that has been around since the dawn of day, or setting up a new line configuration, sometimes the most common answers don’t always work. We urge our customers to keep an open mind and work with us to figure out the best solutions to your packaging needs.
For more information about Universal Systems’ ProBilt line or products please reach out to sales@ussefl.com or call (561) 272-5442.
Mini Modules and Gun Applicators
Several Years ago, Nordson® introduced the MBII gun applicators and modules. Initially, the small module and applicator manifold was made for packaging lines that were designed with little room for glue application. Then, they started offering them in a low-profile design for case sealers. Over time, Nordson® started using MBII guns and modules as standard equipment on all of their packaging line set ups. Why? Even though it is not clear the need for the MBII in most standard application setups that have room for an H200, the price surely made it a much more profitable product in Nordson’s® arsenal. The MBII is more than double the price of a standard H200 module and gun applicator.
The key question to ask is, when do you need to use a MBII applicator versus a standard H200 applicator? Like we mentioned earlier, a MBII applicator is essential on packaging lines that have about half the space to fit an applicator than typical lines. Not only is the manifold about half the length and height of a standard H200 gun, the modules measure a mere 1” x 2” in size. Additionally, MBII applicators have the filter built into the manifold. This is a space saver because it eliminates the need for the in-line filter assembly off of the back of a standard gun into a hose. This allows for the MBII gun to attach directly to the hose and still be able to filter out all of the char and debris travelling through the hose and into the manifold. MBII guns also are air open, air close systems, so you can only run them if you have your line set up with two air lines running to the gun. MBII modules do still fit all of the standard H200 nozzle tips. So, even though you cannot use your standard H200 module on the MBII manifold, you can use all of your current stock nozzles.
If your new packaging line comes in with a MBII system installed, our recommendation is to measure the space where the applicator is mounted. If you have room for a standard H200 applicator and in-line filter assembly, you can always switch to a standard H200 set up. The only thing you will need to change out is the gun, filter assembly and solenoid. This will save you thousands of dollars in the future…but only if it fits.
For more information about the mini modules and applicators manufactured by Universal Systems SE, please visit https://www.ussefl.com/products/applicator-gun-heads/h201t-guns/#1544128561143-eeff57c6-9818.
How to Determine Heated Hose Length for Your Packaging Line
One of the most important things to consider when setting up your packaging line is the best length hose that you should use for both the top and bottom applications. While most maintenance managers think the longer the better, that is not always the case. Heated hoses should be treated with care to ensure durability and run time. At Universal Systems SE we recommend that you map out where the tank will be situated and then where the guns will be mounted. When setting up the top applicator line, make sure to account for hose mounting brackets and try not to make too many turns. The hose line should run as direct as possible to the applicators. We recommend that the hose mounts be hanging mounts for top applications. This will cause no kinks or damage to the exterior hose casing and ensure the long run life of the hose.
When setting up the bottom line, the hose should be mounted down the side of the packaging machine itself. You can use hanging mounts here as well. Make sure not to lay or run the hose on the floor. Also, do not coil the hose under the tank. If you have any leftover hose that you need to coil…your hose is too long. Running the hose on the ground and coiling the heated hose could cause a plethora of issues such as power shortages, heating issues or tripping hazards, all dangerous to your employees. Make sure to keep the area around the tank and hoses clean and hazard free.
The most common hose lengths sold are 6’, 8’, 10’ and 12’. However, Universal Systems does manufacture 2’, 4’, 16’, 20’ and 24’ hoses that we stock. Our biggest piece of advice is to take your time measuring and setting up the mounting brackets. This will ensure that your hoses will last longer and your packaging line will be as efficient as possible.
For more information on our USSE heated hoses, call a sales rep today at (561) 272-5442 or email sales@ussefl.com.