The gun for polyurethane foam - a tool that is very useful in any repair or construction. This device is necessary not only to save time, but also more economical use of foam. Significantly increases the accuracy of the application, which again leads to savings. Let's talk with you about how to use a foam gun. This is not difficult at all, but some rules must be followed.
Some general information
Installation of plastic windows, door frames and much more requires laying foam. Manually applying it is quite problematic for a number of reasons, but using special equipment, you can save time and effort. Today, various guns for applying foam are sold, some of them are structurally different. But we can say that only foam cylinders differ significantly from each other. Nevertheless, most of the more or less high-quality pistols fit any produced cylinder. Before using the gun for mounting foam, you must take care of your own safety. It is advisable to wear special gloves and glasses, although many do without it. Also, before starting work, you must shake the container well.
Foam gun device
Let us briefly consider what elements this tool consists of. The design of the gun is very simple, and there are no complex nodes. The nozzle should be 5 times smaller in diameter than the tube. This is necessary to ensure optimal pressure and the possibility of applying a thin layer of foam. There is also a tube itself, often called the barrel. A rather important part is the adapter, which is also an adapter. It acts as a connector between the gun and the foam cylinder. The design also provides for the adjustment screw, which allows you to control the foam output. It is advisable to buy models that have a nut for attaching the barrel to the handle. If you remove it, then access to the rod will appear, so it can be cleaned without any problems. There are also a trigger and a pen. The last element in priority should be aluminum and fairly durable. As you can see, the gun device for polyurethane foam is quite simple. Let's go further.
About loading a gun
There is a protective cap on the bottle. Before use, it must be removed, after which it is possible to screw the cylinder into the gun holder. However, you must understand that during the execution of the work the cylinder must be in an inverted state, that is, its holder will be at the bottom and the adapter at the top. Accordingly, the gun turns over so that the handle is at the bottom. During winding with one hand you need to hold the gun, and with the second rotational movements insert the balloon into the holder. To obtain a homogeneous composition of the mixture contained in the container, the bottle must be shaken well. It is better to shake it in the inverted position, that is, the handle of the gun should be at the top. About 15 agitations will be enough. Well, now you can figure out how to use a gun for polyurethane foam. As noted above, there is nothing complicated.
About laying foam
Now I would like to consider the general principles of work not so much with a gun as with a mounting foam, since this stage is quite important. Before starting work, wet the treated surfaces. This is necessary so that the swelling of the foam occurs faster and better, and the composition is completely homogeneous. The nozzle is directed towards the seam. The trigger must be pulled gently and without jerking. So the quality of the foam at the exit will be higher, and the risk of breaking the trigger is less. The gap must be filled from bottom to top. In this case, the nozzle needs to be done as if zigzags. Using the adjusting screw, you can increase or decrease the amount of foam supplied to the barrel. It depends on the depth and thickness of the weld being processed.
Do not forget that during operation, the gun under the mounting foam along with the cylinder must be shaken periodically. If the gap to be machined is too deep, use a special adapter that slides over the gun barrel.
Foam gun: cylinder change instructions
This is a fairly simple manipulation that does not require any preliminary preparation. Naturally, in the process, the amount of foam in the cylinder decreases. After the resource has been completely used up, it is necessary to replace the cylinder with a new one. This is done as follows.
The gun barrel goes into the bin. By pressing the trigger, it is necessary to remove the remaining foam from the barrel. After that, the gun is turned upside down, and the cylinder is twisted by rotational movements. The mounting location must be cleaned with a special fluid and immediately install a new cylinder. How is its installation, we have already figured out. Now the foam gun is ready to go.
What to do at the end of work
After you have finished, you need to tighten the adjusting screw fully. If a certain amount of mounting foam is still left in the cylinder, and the next use will be soon (no more than 1 month), then it makes no sense to remove the cylinder. Moreover, it is highly recommended that you leave it in the gun. So the foam will be under constant pressure, which prevents it from drying out. Before completion, the tip must be thoroughly cleaned with a special fluid. This will prevent the drying of the foam, therefore, the next use will be much easier, since no preliminary cleaning is required. If the cylinder is empty, but there is no new one, then the old one is removed and the gun is cleaned. In principle, the gun is used for polyurethane foam. The instruction does not end there, there are still a few important details.
Briefly about cleaning
Many generally forget about this procedure, considering it unnecessary and meaningless. But this is somewhat wrong. The fact is that if the mounting foam hardens all over the trunk, then removing it from there will be problematic, and it will take a lot of time. That is why immediately after finishing work, it is necessary to clean the tool. To do this, the barrel outlet is rotated to the position "away". After that, the foam bottle is unscrewed, and a cleaning agent is inserted into the holder. Next, you need to press the lever until the barrel is completely filled with cleaning agent. It is necessary to wait about 10-15 minutes, after which the fluid is removed, and the barrel is repeatedly washed. When you remove the cleaning fluid bottle, pull the trigger to remove any remaining cleaning agent. Tighten the adjusting screw all the way. In principle, this is all that can be told about how to use a gun for polyurethane foam. Now let's look at tools from well-known manufacturers.
Hilti polyurethane foam gun
The company is engaged in the manufacture and sale of professional models. For example, Hilti CF-DS 1 is very popular among professionals and in everyday life. This gun will cost 2500 rubles. In return, you get an ergonomic design, a durable product, and high build quality in general. The anatomical handle has a non-slip coating and lies well in the hand. The trigger is large enough and designed for two fingers, which increases the convenience of work. In addition, the gun for Hilti CF-DS 1 polyurethane foam has a fuse. It blocks the trigger from being accidentally pulled during transport or when the tool falls. The weight of the gun is only 480 grams, therefore, working with it, the operator will not get tired.
Conclusion
If you want to buy an inexpensive tool, then pay attention to the gun for the Bison polyurethane foam. This is a fairly high-quality tool, most models have a lightweight body, which allows for better and more accurate work, as the operator’s hand will be less tired. In general, the products are made of steel and are quite strong and airtight. That, in principle, is all that can be told on this topic. If you are looking for the best gun for polyurethane foam, then give preference to popular manufacturers. It should be understood that there are other good options, cheaper and more affordable. Today, many domestic companies supply good and fairly cheap guns for polyurethane foam. You already know how to use them, and the technique will come with experience.