How to bend a pvc panel at the corners. How to bend a polypropylene pipe at home and avoid deformation. Conditions under which it is possible to clad walls with plastic using glue

Quite often when doing construction works when the owner makes overhaul, they face many problems that need to be solved using available tools. For example, it is often necessary to give a plastic product a curved shape. Of course, you can go to the store and buy a finished product, but the search for the most suitable product is often delayed. Below we will try to figure out how to bend plastic at home.

The very concept of "plastics" unites a large number of natural or synthetic polymers that can easily deform and change shape when heated. After the material hardens, it will again become solid. We will use this property of plastic when answering the question of how plastic can be bent.

You can bend plastic in several ways. The best of them, which allows not to break the material and create a bend at the required angle, is using a molding machine.

To bend plastic, you will need:

• molding machine;

• VAL board;

• silicone;

• industrial dryer.

Detailed instructions on how to bend plastic

If you need to bend polystyrene, you can prepare several fixtures. Make a mandrel from MDF (Fiberboard). Assemble the mold and, depending on the width and length of the plastic part, adjust it to the appropriate size. Go over the surface with sandpaper so that there are no distortions left.

Prepare the shell for the silicone plastic part on the molding machine. It will be required to fix the flat workpiece on the mandrel and preserve its surface from scratches and chips.

Insert the plastic part into the shell, then fix it in the MDF mandrel and put it on the molding machine. After the unit warms up and the plastic begins to settle on the mandrel, taking the required shape, you need to wait 5-7 minutes. Carefully remove the part from the machine while wearing a glove. Then put it on metal surface to cool down the material. Then remove the mandrel.

Bend plastic pipe much easier. Take an industrial hair dryer or a gas burner, turn it on and aim at the place where you are going to make a fold. Distance from heating device to the surface of the part must be at least 5 cm.

Rotate the pipes without stopping, otherwise it may catch fire. Heat it up until the material is soft, then bend it. Hold the pipe in this position for a while to allow the plastic to harden.

Plastic slopes for PVC foam windows or walls, you can bend to the required angle by making frequent cuts along the radius. Then, having created the necessary shape, fix them with special glue. Thus, you will make a part with bends and extensions.

I haven't posted here in a while! And you can find a lot of good reasons for this ... And the main reason is that he was doing what they say on the radio - the wrong "format"! And now, not in my opinion, but out of necessity, I started repairing the bathroom. Previously, repairs were made in 2005, this date is solely in order to understand what was then available from available technologies and materials. I think some ideas are still relevant today! For this reason, I decided to post several articles, so to speak, in reverse order, i.e. during parsing...

This first article is devoted to the issue of bending plastic panels when sheathing rooms in the corners. I think that this issue may be well known to many, but there will also be those who simply did not think about such an option for resolving the issue, but went exclusively through the path that our industry offers and bought various corners provided for these purposes. In my opinion, the option I proposed, firstly, will save money (do not buy corners), secondly, it looks more aesthetically pleasing, and thirdly, it allows you to maintain the integrity of the structure. Maybe someone else can come up with positive traits I think these are enough!

And so, let's take a look plastic panel! (for demonstration I used clippings, fragments - in short, garbage)

To create an internal corner, it is enough to simply make a cut along the entire length of the panel from the "wrong side" of the required segment, which will further form the corner. The cut can be made with a simple construction knife. The panel is cut quite easily and simply.

As practice has shown, although a simple cut is enough, it is still better in a pair to completely “select material” from this segment - as in the photo below. This is due to the fact that when bent, the edges of the cut plastic can interfere with each other ... !!! Not required, but highly recommended!

You need to bend carefully, with smooth movements, gradually along the entire length so that the panel is in this place didn't break. A fairly large angle can be achieved.

For outer corner, you need to "select material", no longer from one segment. This is due to the fact that the cut edges are superimposed here and they begin to abut and do not allow the panel to bend.

If you do everything right slowly and carefully, then you can achieve these results !!!

EXTERIOR ANGLE

OUTSIDE CORNER

Attention, a smooth and good angle will turn out if the walls that you sheathe / paste over with panels also display normal angles !!!

Agree, it’s quite tedious to finish the walls with plastic on a pre-built metal and wooden frame. In addition, this method of wall decoration reduces the volume of the room. And although we are talking about some 3-4cm on each side, they still significantly make the room smaller. There are other disadvantages frame method wall cladding with plastic - PVC panels are not able to pass moisture and its vapors, as a result of which dampness, rotting and, as a result, the appearance of fungus form behind such a false wall. alternative frame technology wall cladding with plastic is the installation of panels on glue - this method is devoid of almost all the disadvantages described above. We will deal with it in the most detailed way.

Conditions under which it is possible to clad walls with plastic using glue

Yes, you heard right. Not every wall can be pasted over with plastic PVC panels. There are not so many conditions under which plastic is able to adhere well to the surface to be lined, but their failure to comply will lead to a waste of money and time.

Firstly, it is the evenness of the walls. We are not talking about an ideal surface that does not have the slightest curvature - permissible drops, pits and bumps should not exceed 5 mm. If there are more, then the plastic will either not stick or break in places of large depressions.

Secondly, the quality of the surface. It's no secret that no glue will stick to a dusty, dirty and greasy surface. Therefore, before proceeding with the gluing of plastic panels, the walls must be cleaned with high quality - wash off the whitewash with water, remove dust with a primer, and clean the grease with detergents.

What glue to choose for plastic PVC panels

In principle, wall cladding with plastic can be carried out using different adhesive compositions - some craftsmen use hot-melt adhesive for this purpose, which is applied with a special gun, others resort to contact adhesive such as “liquid nails”, and still others use it for PVC mounting panels mounting foam without the ability to expand.

In principle, all of the above adhesive compositions cope with the tasks assigned to them by almost 100%, but some of them have their drawbacks. In particular, we are talking about hot glue. The fact is that plastic has a considerable coefficient of thermal expansion - the use of a rigidly fixing adhesive that deprives the panels of a small free play leads to a gradual lagging of the panels from the walls. This does not happen immediately, but in the next couple of years, hot melt adhesive will show its failure to hold the panels for a long time and reliably.

It is for this reason that it is better to install plastic on walls with liquid nails or non-expanding polyurethane sealant.

This type of adhesive has sufficient plasticity so that during the cooling and heating cycles of the plastic, it does not come off the surface. It is this adhesive for PVC panels that most craftsmen who value their reputation use.

The technology of mounting PVC panels on glue

The process of cladding walls with plastic using glue, as in principle, that's all Finishing work starts with good surface preparation. As mentioned above, it is cleaned of dust, dirt and grease, after which it is abundantly primed. This approach to business is a common truth for every master who respects his work.

Additional work may need to be done before cleaning and priming the walls. It's all about the approach of the builders of the past era to their work - most of the corners of rooms such as the bathroom and the bathroom were made rounded. They will have to be slightly trimmed with a puncher. If this is not possible for any reason, then you will have to repeat the turns of the walls with an accuracy of a millimeter.

Do you know how to bend a plastic panel along its entire length without breaking it? You certainly won’t need to warm it with a powerful hair dryer - the back side of the panel is cut between the stiffeners and gently bent. Thus, you can make almost any internal and even outer corner. When forming the outer corners, one slot will not be enough - you will have to cut an oblique segment one and a half to two stiffeners wide. In principle, if the walls and corners are even, then you can abandon this idea, preferring the factory corner joints. In the case of wall angles larger than 90˚, you can't imagine better than bending the panel.

Okay, now let's get down to business, and first we will prepare the starting strip, which will cultivate the connection of plastic with the floor. You can do without it, but only if your plans include the installation of skirting boards. The same applies to the ceiling - if you plan to install a plastic suspension system, then you can refuse to install the starting profile under the ceiling.

Now the panel itself. It is cut in accordance with the height of the room, its back side is cleaned of dust with a damp cloth. Only then can glue be applied to it. Depending on the curvature of the walls, the adhesive can be applied in several ways. If the walls can be called ideal, then the application of the adhesive composition is carried out in strips along the perimeter and in the middle of the strip, but if the walls have curvature, then it is better to apply the glue pointwise, in large drops. This approach to business will guarantee that even in the depressions the panel will stick to the wall surface with high quality.

The greased panel with glue is applied to the wall. If we are talking about using liquid nails, then it taps and comes off - such glue needs to be weathered a little (5-7 minutes), this will make it more rigid and will not allow the panel to lag behind the wall until the glue is completely dry. With polyurethane sealant, such numbers do not work - in the process of hardening of this glue, the plastic strip will have to be periodically pressed against the surface to be lined. So whatever one may say, but better than liquid nails for gluing plastic pvc panels are hard to find.

Here is the answer to the question of how to fix plastic to the wall with glue. It is in this way that their adhesive installation is performed. And finally a little advice regarding the formation of external and internal corners. To be honest, there is no point in bothering with them and using factory connections. Most best option- veneer them with ordinary plastic corners that do not have grooves for inserting panels into them. They are simply glued onto transparent silicone, and its excess is removed with a damp cloth. Depending on the curvature of the corners, you can choose the width of such inserts in the range from 20 to 50 mm.

PVC pipes are used more and more often as a starting material for the manufacture of various crafts and homemade products. Sometimes masters give them an ornate curved shape and the final work after application finish coat even trimmed do not resemble the original material. In this master class, we will demonstrate this technique to you.

materials
To bend a PVC pipe you will need:
the pipe itself;
strong tape;
sand;
funnel;
metal container;
gas or electric stove;
protective gloves;
knife or scissors;
saw or hacksaw, as well as sandpaper.
In addition, you will need a pipe bender. In this case, a piece of plywood with dowels planted in the thickness was used.
Step 1. Usually, pipe bending is used gas-burner, but with its help it is possible to give the pipe only a slight bend and only in a small area.
It is difficult to work out significant segments of such material in this way. It takes a lot of time, moreover, pipes often bend during work, which does not look aesthetically pleasing.
To bend the pipe, as you see in the photo of the final work, it needs to be evenly heated from the inside. For this difficult operation we use sand. So the first thing you need to do is cut off pvc pipes a piece of the required length and clean the edges of the cut.
Step 2. One end of the pipe must be sealed with tape. The tape should completely cover the hole.
With the help of a funnel, sand must be poured into the pipe. Take it so much that the pipe is completely filled with it.
Having measured the required amount of sand, pour it into a metal bowl and warm it up well. The sand must be hot.
Put on protective gloves on your hands. Using the same funnel, pour the prepared sand back into the pipe.
Cover the other end of the pipe with tape. This is necessary so that the sand does not spill out during work.
Leave the pipe like this for a couple of minutes. During this time, it will warm up from the inside. The material will become soft and pliable.
While the sand is still hot, you can shape the cut piece of pipe into the desired curve or shape. After that, remove the tape and pour the sand back.
When completely cool, the pipe will hold the shape you gave it.