Managing Your Glue Usage in Packaging
Hot melt adhesive is not cheap and you may notice that the prices are only going up. What purchasing agents might not know, is that a lot of packaging lines are using more glue than is actually needed. There are a few simple ways to manage your actual glue usage and help cut costs to manage your budget.
Nozzle Diameter
The first step in managing your glue usage, is knowing the diameter nozzle tip you are using in your packaging lines, and understanding why you are purchasing that size. A lot of times, our sales reps will get calls from customers that want to buy larger size nozzle tips because their line operators are saying there is not enough glue being released on the cartons. Obviously, as you increase your nozzle tip diameter, the more glue you are going to use overall and increase your yearly costs for adhesive. This can also cause several other issues, such as potential sealing issues if the hot adhesive does not have enough time to dry as it moves along the cartoner. If your line operators are asking for larger diameter nozzles, question them as to why.
Evaluate Set-up
If your line operators are stating that the glue is not keeping the packaging closed, which is why they need larger nozzles, evaluate your setup. Check the distance your gun applicator is to your carton and at what temperature you are heating your adhesive. If the adhesive is not hot enough and your gun is too far away from the application site, the adhesive could be cooling before it even hits the carton which is why it is not creating a tight seal. Simply increasing your heating temperature or moving your gun applicator closer to the end application site could solve this issue. You could also be putting down too much glue already. If you have a high-speed packaging line, and put down too much glue, the speed will not allow time for the large amount of glue to dry.
Change Your Filters
Another simple solution to managing your glue usage, is to check both your tank and gun filters. If your nozzles are clogging frequently, causing the line operators to buy larger diameter nozzles, they may be clogging due to char. Char is a typical occurrence in hot melt packaging, but the transfer of most char can be prevented by regularly changing your tank and gun filters. These filters will extend the life of both your modules and nozzles.
For more information or tips on how to increase your packaging line efficiency and lower your costs, call a Universal Systems representative at (561) 272-5442 or email us at sales@ussefl.com.
Melt Rate vs. Pump Rate
When purchasing a hot melt adhesive system, it is important to know your desired melt rate and pump rate. It is also important to understand the difference.
All Universal Systems SE ProBilt™ tanks are equipped with a 14:1 ratio pneumatic pump assembly. Pneumatic pumps are most common and have a maximum pump rate of 75 lbs. per hour. No matter what the tank capacity is, whether it is 12 lb., 15 ob., or 20 lb., the pump will max out at 75 lbs. If you need to pump more adhesive then that per hour, you will need to transition to a gear pump system with a larger tank capacity.
The melt rate is the rate at which the tank will melt the adhesive you put into the reservoir. This is where the tank capacity comes into play. Before moving forward with any hot melt adhesive system, first you need to understand how many pounds you need to melt per hour. The melt rate is dependent on how many hoses and gun applicators you are running and how many boxes are sealed per minute on your packaging line. The most common tank capacity is the 20 lb. (10 Liter) ProBilt™ 20, with a melt rate of 23 lbs. per hour. If you are only running one line with one hose and gun applicator, then you may only need the 15 lb. (7 Liter) Probilt™ 15 which melts 18 lbs. per hour.
A common misconception is that the on-demand autofill system, the ProBilt™ Phoenix, will have a larger melt rate and pump rate. That is incorrect. The tank capacity on any auto fill system is the same as a regular tank such as the ProBilt™ 20. However, the advantage to the auto fill is that the line operators will not have to watch the adhesive level in the tank as closely. The vacuum system connected to the tank will sense when the adhesive level is low and automatically fill the tank. This helps eliminate dry running and pumps will last longer. However, the pump rate on this system will still max out at 75 lbs. per hour.
For additional information about melt rate and pump rate on all of our ProBilt™ tanks, please call (561) 272-5442 or email sales@ussefl.com.
From Leaves and Baskets to Hot Melt and High Speed Packaging
People have been packaging products for thousands of years. From the time the earliest humans stepped out to go on a long hunt, it was necessary to wrap food for the journey in something – be it leaves or grass – in order to keep the food from spoiling. As time progressed, new innovations allowed new foods to be packaged for transportation. And innovations were made to package non-food items, as well. Packaging allows for the easy transport of anything and everything that people produce.
But fast-forward a few thousand years. People no longer produce things on a small scale. Even when an entire year’s worth of a harvest was required to be packaged for transport across the country, it did not compare to the production capacity of the twentieth century. New manufacturing technology has made it possible to produce thousands of pieces of a product in a single day. Anyone who has walked into a big-box store or supermarket has experienced firsthand the overwhelming mass production that is possible with modern techniques.
With high-speed production comes the need for high-speed packaging. This is not something that can be accomplished by hand, and requires specialized machines and technology for the process. An important part of high-speed packaging is hot melt equipment. Since hot melt is literally what holds the packaging in an industrial world together.
Hot melt glue has the ability to rapidly cool and bond materials, which allows manufacturers to quickly seal and secure products. Companies across all industries know if items are not properly packaged and available to ship immediately after production, they will lose money. Humans continue to build on the idea of wrapping things in leaves and putting items in a containers for transport. The key to continued progress is incorporating new technologies as well as adapting to the needs of an ever changing global market.