What kind of glue to glue bags from cellophane. Connection methods without glue and solvent. Two-component acrylate adhesive for bonding polyethylene

How to glue plastic wrap? This seemingly simple question constantly puzzles many summer residents and gardeners. After all, if you first decided to build yourself a greenhouse, you will have two options - to purchase a ready-made one (the pleasure is not cheap) or to glue the film of the required width.

To facilitate your searches, here's a quick guide on how to glue polyethylene film.

First you need to purchase polyethylene in the required amount, at the same time take with a margin, since you need to overlap. Is there plastic wrap?

This means that you have very few tools left, namely: an iron, sheets of paper and preferably two assistants, plus a table or other flat surface.

The welding of the film is carried out according to the following scheme: take the film and overlap the edges to be glued (the width of the overlap should be equal to the width of the used iron with a margin of 5 centimeters).

The prepared paper (you can use a regular newspaper folded in half) is laid slightly wider than the overlap.

We take two small segments and use the "stick-on" method to select optimal temperature, at which the welding of the polyethylene film will be carried out

If this is not done, then when gluing large pieces of film, it can become unusable, melting due to too high an iron temperature or an exceeded holding time.

After selecting the temperature on the table, we make gluing, it is advisable to have two assistants who will not only move the glued film evenly, but also level the finished overlap.

Note to everyone who will glue the plastic wrap - the paper should not be removed immediately from the hot film, in order to avoid tearing.

Let it pause a little and then shoot.

In conclusion, we note that plastic wrap for greenhouses is very easy to stick together at home.

However, if you need to cover a large greenhouse, then look in hardware stores for a special machine for gluing polyethylene and it will become much easier for you to work.

How to glue plastic wrap? This seemingly simple question constantly puzzles many summer residents and gardeners. After all, if you first decided to build yourself a greenhouse, you will have two options - to purchase a ready-made one (the pleasure is not cheap) or to glue the film of the required width.

To facilitate your searches, here's a quick guide on how to how to glue the film made of polyethylene. To begin with, you need to purchase polyethylene in the required amount, while taking it with a margin, since you need to overlap. Is there plastic wrap? This means that you have very few tools left, namely: an iron, sheets of paper and preferably two assistants, plus a table or other flat surface.

Film welding is made according to the following scheme: take the film and overlap the edges to be glued (the width of the overlap should be equal to the width of the iron used with a margin of 5 centimeters). The prepared paper (you can use a regular newspaper folded in half) is laid slightly wider than the overlap. We take two small segments and, using the "stick-on" method, select the optimal temperature at which plastic film welding(if this is not done, then when gluing large pieces of film, it may become unusable, melting due to too high an iron temperature or an exceeded holding time). After selecting the temperature on the table, we make gluing, it is advisable to have two assistants who will not only move the glued film evenly, but also level the finished overlap.

Note to everyone who will glue the plastic wrap - the paper should not be removed immediately from the hot film, in order to avoid tearing. Let it pause a little and then shoot.

In conclusion, note that plastic film for greenhouses It sticks together at home very easily, but if you need to cover a large greenhouse, then look in hardware stores for a special machine for gluing polyethylene and it will become much easier for you to work.

Yet

Film welding is one of the work steps that can sometimes be necessary. For many types of work, pieces of polyethylene film must be tightly connected together. Most often this is necessary for the construction of a greenhouse, greenhouse, installation of vapor barrier during construction.

For some activities, it is necessary to provide a tight connection to the material in order to obtain a product. When gluing polyethylene using scotch tape or adhesives, high-quality sealed joints will not be obtained, therefore, if necessary, to ensure a strong connection, welding is used.

There are many ways to weld polyethylene film. The operation itself is the bonding of layers of material by heating, creating a temperature convenient for melting. When the layers are compressed, a weld is formed.

Welding of polyethylene is as follows: When heated, the layers change their structure, join at the molecular level, and after cooling, a strong seam is formed.

To glue the plastic wrap, the layers must be well cleaned - for any contamination strength characteristics are much reduced.

Foreign impurities pass into the melted mass, which violate the molecular structure in the seams.

For a high-quality connection with high strength, it is necessary to observe following conditions:

when welding the film, its pieces must be homogeneous, belonging to the same batch;
surfaces must be clean;
temperature regime when working, choose the right one - with insufficient heating, the strength deteriorates, with excessive heating, the joint and the pre-seam area are deformed;
when heating, ensure sufficient compression.

In order to join the PVC foil properly, it is impossible to re-weld the edges of the material. If you need to perform such an operation, first cut off the damaged edges.

As in the implementation construction operations, and for household needs, the following connection methods can be used:

welding with a soldering iron equipped special nozzles- at the same time he acts as homemade apparatus for welding;
joining when heated, melting the film with an iron;
the required temperature of the layers is achieved using a burner;
industrial equipment is used to heat the seam.

You can try to warm up the film with a hairdryer, then tightly connect the surfaces intended for gluing to each other, or it is better to put it under the press.

Film welding with a soldering iron

How to glue plastic wrap with a soldering iron? This method can be safely attributed to the most common - the tool is easily accessible, it allows you to get a good result, and with a little refinement of the soldering iron, the effect can be improved.

It should be borne in mind that without modification it will not always be possible to make a tight connection - the joints may be uneven, the material spreads.

So you can glue the greenhouse film or make a canvas for other needs. Only with very small amounts of work can we recommend using a PVC connection with a soldering iron. After a little refinement, it turns into a convenient and easy-to-use tool.

Iron as a welding heater

How to glue the film using an iron - the simplest household appliance that is in every home? Everything is very simple - the work consists in melting the polyethylene and creating joints using a heated iron soleplate.

Improvised welding machine from the iron allows you to connect large areas of film... In this case, the seams can be made with a certain width. All modern irons have a thermostat that allows you to adjust the heating temperature.

Before gluing the film, ensure comfortable spot for work - a smooth wooden surface is best.
The film is laid with an overlap, upper layer covered with fluoroplastic or paper, the sole of the iron is pressed and led along the welding line.
Empirically the clamping speed, force are determined, the temperature is selected.

Professional tools for welding

To connect the film at home, you can make a variety of tools with your own hands, but they are suitable only for performing small-scale work. If large-scale production is required - commercial activities, the creation of a greenhouse or greenhouses - the use of these devices has the greatest effect. No adhesive has the same ability.

The welding process is faster, professional devices allow you to set the desired pressure parameters, the speed of advancement along the weld, and temperature.

Most professional devices there are tensioning and driving roller elements that pull the film from optimal speed, which has a beneficial effect on the quality of the seam.

This problem is often faced by owners of summer cottages, greenhouses, home craftsmen, and even car owners. After failures, people start looking for information on a topic. Is it possible to glue polyethylene at all? In the article you will find the answer to this question.

Polyethylene and its properties

Polyethylene is a very common material with many excellent properties. It is used for insulation, for packaging, for protection against moisture, is an excellent electrical insulator, absorbs the most dangerous type of radiation - neutrons and therefore is used in protection against them, is completely chemically resistant. This latter sometimes turns from dignity to disadvantage. How to glue polyethylene? Bonding is a chemical and a bit electrical process, oddly enough. The molecules of the substances to be glued are attracted to each other by the unevenness of their electric charges.

That is, there must be such a glue in nature (and on the market) that adheres well to polyethylene, and when hardened, firmly holds the glued parts. So, the problem is that it is very difficult to glue polyethylene. Its molecules are electrically very "balanced", hence the extraordinary chemical resistance of the material. And unwillingness to stick to anything. However, the industry has found a way to glue polyethylene. True, not all of this is suitable for the home, but some may come in handy. Here suitable ways, selected by the resulting strength rating:

Welding polyethylene
Weicon Easy-Mix PE-PP glue
Epoxy adhesive plus oxidizer

Welding polyethylene

The strongest seam is obtained when welding polyethylene. If done correctly. The fact is that polyethylene is molded hot, usually under very high pressure, which reaches hundreds of kilograms per square centimeter. And when it is reheated at atmospheric pressure until melting, it tends to shrink, a little, but this is enough to make it difficult to weld. Two types of welding can be distinguished: welding of film and welding of thick polyethylene (canisters, pipes, etc.)

For welding the film, heated objects or a special apparatus for gluing polyethylene, more precisely, welding, are used. It works like this: both layers of film are pulled along a heated wedge, and then immediately welded with a pair of compressed rollers. At correct selection temperature and pressure of the rollers, an excellent result is obtained - complete tightness of the seam.

But with a little practice, you can learn to glue polyethylene, even with an electric soldering iron or an iron through paper, so as not to spoil its sole. The clean edges of the film are laid on top of each other and lead through the paper with the edge of the sole of the heated iron.

A soldering iron with a clean tip, when turned on through a voltage regulator, will weld the seam even better without the need for paper. You can also make a clamp on the sting with a small, conveniently shaped metal nozzle. Then the sting can be used for its intended purpose, and the polyethylene will not be stained with solder or carbon deposits from the flux.

Bonding thick polyethylene is more difficult and requires a lot of skill. Most The best way heating: a gas portable burner (it is convenient to work with it), or a hairdryer with a nozzle for a narrow stream of + 250 ° С.

The procedure can be as follows:

Clean and dry surfaces thoroughly before welding.
Prepare a polyethylene joint filler. It is best to take a narrow piece of the same material.
Heat the edges of the seam before melting, let them “settle” a little. But do not get carried away with this process.
Start adding the additive (see item 2), fusing it evenly on both sides of the seam to a thickness equal to the material.
Allow the seam to cool completely.

The same method is applicable when deciding how to glue polyethylene foam. The surface of the foamed polyethylene is not very conducive to adhesion, and it is better to weld it carefully.

For another way to weld thick polyethylene, see the video:

Bonding with filled acrylate adhesive

The best adhesive is Weicon Easy-Mix PE-PP. It is specially designed for materials with poor adhesion. Most liquids "stick" very poorly to polyethylene, and are simply squeezed out of the contact area.

But in this glue there is an additive of tiny glass balls, which prevents the glue from leaving the place of gluing, forming a gap required thickness... Therefore, the gluing surface is sufficient and the glue, when solidified, bonds the surfaces firmly. It's hard to find better than gluing polyethylene.

The surfaces must be thoroughly degreased and dried before gluing. Glue can only be fed from the mixer of the branded packaging. The best temperature for work is +21 ... + 23 ° С. Liquid glue lasts no more than 2-3 minutes. After applying a layer, you must immediately dock the surfaces. Complete readiness of the seam (the greatest mechanical strength) for polyethylene will be achieved in a few hours (4-5 according to the experience of working with glue). Exposure of the glue line is carried out at a temperature from +15 to +70 degrees.

Epoxy bonding

This is the most available method, if we talk specifically about gluing, not welding. Before gluing the polyethylene, you need to prepare the surfaces.

Epoxy glue is not a glue for gluing polyethylene, but, nevertheless, phenol-formaldehyde resin has very decent adhesion to the surface of polyethylene. In this case, you need to proceed as follows:

Coarse the surfaces with emery cloth, then degrease and dry.
Treat both surfaces with a 15-25% solution of chromic anhydride or 20-30% potassium dichromate. (Caution, caustic substances and dangerous carcinogens!) You can take another strong oxidizing agent: a strong solution of potassium permanganate. It is not much inferior in efficiency, but much safer. After processing, dry the surfaces again.
Prepare epoxy glue according to the instructions.
Apply a thin layer of glue to both surfaces and join together.
Keep at a temperature of +30 ... + 45 ° C for several hours, but it is better to keep it for a day until cooked.

Conclusion

In case of high strength requirements, of course, welding should be preferred. If the welding is still accompanied by keeping the seam warm at about seventy degrees V for several hours with slow cooling, then the seam will have slight brittleness. The sharp cooling of the joint makes it brittle, especially in cold conditions.

Acrylate glue with a filler does not require mechanical surface preparation, except for unconditional cleaning and degreasing, which must always be done before gluing. You can even try experimenting with other acrylate adhesives by adding an additive in the form of crushed chalk or cement. It is possible that it will be possible to obtain a high-quality and very inexpensive recipe.

Epoxy adhesive is the most difficult to use, and the strength is not the highest. But as a last resort, and this may be the way out.

Many materials cannot be connected with metal fasteners, especially for elastic polymers. Everyone who has encountered this procedure knows how difficult it is to find good glue for polyethylene. Most products have a very smooth surface, which gives it poor adhesion. So you really need to find quality material who will be able to overcome this obstacle and on long years will adhere the polymer to the selected surface.

The composition of the glue

To combine composite materials with a complex structure of chemical bonds, a substance with big amount polyatomic elements. Adhesive for polyethylene and polypropylene is made on the basis of methyl methacrylate. This is a complex ester compound of methacrylic acid, which in its pure form cannot exist under normal conditions, since it has negative temperature melting. To obtain an adhesive, xylene, complex organic and inorganic acids, chromic anhydride and other additives are added to the composition.

If you need to combine with polyethylene, then the easiest way is to use heat treatment. This method is very reliable, as it allows you to create a continuous continuous seam, which will no longer be possible to break without rough intervention. But such processing will lead to deformation of the edges of the processed products, which is not permissible in every case. Therefore, special glue is in great demand in the modern market. Many different materials are made from composite materials. decorative elements that must be secured without compromising their integrity.

The polymer compound is marketed as a fairly thick paste. The kit also includes a special substance, the so-called activator. When added to the composition, the glue very quickly acquires the desired consistency and becomes ready for use. There is no time to waste after diluting the mixture as the pot life is very short. On the one hand, this allows products to quickly stick together, but on the other hand, it requires maximum efficiency and coordination of actions from the employee.

The procedure for gluing elements

Working with glue is very simple, it does not require deep knowledge in the construction industry and many years of experience. All technological procedures are quite capable of being handled by beginners. To connect polymers or glue them to another surface, you need to carry out the following sequence of operations:

Clean and degrease surfaces. Many manufacturers claim that their products can be used on untreated surfaces, but should not be trusted. In any case, preparation will take only a few minutes, but a positive result of the operation after that will be guaranteed.
Further on the processed materials can be applied glue for gluing polyethylene. It will harden in only 2-3 minutes, so immediately after application, you need to fix the elements to be connected in the desired position.
After completing the previous operation, you need to leave the processed products at rest for at least a few hours. This time is enough for the glue to finally solidify and adhere to the details.

As you can see, the procedure is not much different from working with standard office glue. The only thing to note is that all work must be carried out with protective gloves. Some of the ingredients in the adhesive can cause irritation and allergic reactions on open areas skin. In case of contact with eyes, rinse immediately with plenty of running water and consult a doctor.

Also, do not allow the substance to enter food. It is necessary to store when room temperature out of the reach of children and pets. It will be much more convenient to work with glue if you purchase a special gun for this. It is charged with ready-made cartridges and allows you to evenly distribute the substance over the surface and strictly observe the required dosage. But it is worth buying such a unit only if a large amount of work is planned. For local repairs, its acquisition will be absolutely inexpedient from an economic point of view.

Specifications

The technical characteristics of the product have been designed in such a way that it can be maximum reliability perform the functions assigned to it. Adhesive for expanded polyethylene has the following operating parameters:

- the proportion of miscibility adhesive / activator = 10/1;
- the density of the working mixture is 1.07 grams per cubic centimeter;
- a layer of glue required for the connection - 0.2-1 millimeter;
- tensile strength under normal conditions - 13 megapascals;
- maximum expansion at elastic deformation - 5.3%;
- resistance to temperature effects - up to +80 degrees Celsius;
- service life is several years under normal operating conditions.

The substance has the best properties at an ambient temperature of +35 degrees Celsius. It is not afraid of moisture and direct exposure to water, is highly flammable and burns out quickly at high temperatures. The shelf life after opening the package is no more than six months. When storing, it is worth considering the fire hazard and not keeping the glue near sources of open fire.

It is necessary to purchase material in a specialized store in order to avoid falling into a possible fake.

Polyethylene - has long been known and popular in household material, unpretentious and inexpensive. Many are faced with the need to glue polyethylene, for example, when arranging a greenhouse. It is worth noting that this material is difficult to bond, but, nevertheless, this can be done with the help of special adhesives.

So, to the question, what kind of glue will tightly glue polyethylene, experts answer - these are BF-2 and BF-4 adhesives, as well as glacial acetic acid, xylene and trichlorethylene. You can purchase these formulations in specialized stores.

What glue to glue polyethylene

What glue to use for gluing polyethylene - composition

The easiest way is to purchase structural adhesive in the store, which contains methyl acrylate. Its properties provide fast softening of polyethylene and its further adhesion. The glue also contains inorganic and organic acids and xylene, chromium anhydride and various additives.

The advantage of using a mixture is that no additional processing of the material is required. However, glue for polyethylene is quite toxic, so it is recommended to carry out work on outdoors... The glue acquires its best properties at a temperature of + 35C, it is not afraid of moisture, but it is highly flammable. It is better to buy it in specialized stores so as not to run into a fake.

If there is a need to combine polyethylene with polyethylene, it is more convenient and easier to resort to heat treatment.

This technique allows you to obtain a strong, inseparable seam. Among the disadvantages of the method, it is worth noting the deformation of the edges of the product.

On sale are mixtures for combining polymers, similar in consistency to a thick paste. The kit includes an activator. After adding it to polyethylene glue, it acquires the required consistency, and it can be used in the near future.

We glue polyethylene - step-by-step instructions

To glue polyethylene, no special knowledge and skills are required. Even beginners will cope with the task at home.

The order of work is as follows:

Clean the surface and degrease it. Some manufacturers claim that this step is optional, but experts still recommend taking a few minutes and in no case skipping it.
Apply glue to the treated material. It will take only a few minutes to solidify, so the parts need to be attached to each other, without delay.
Leave the glued polyethylene elements for several hours until the glue has completely set.

In general, this algorithm is similar to working with any glue. However, it is worth taking care of the use of protective gloves, since the glue can cause allergic reactions and is quite toxic.

It is more convenient to apply the adhesive using glue gun that can be charged with ready-made cartridges. The mixture of them is distributed evenly, so it is easy to achieve the desired dosage. If you are planning a large amount of work, this unit is worth the investment.

VIDEO ON TOPIC

How to glue foamed polyethylene

Foamed polyethylene has a porous structure, therefore it provides high-quality heat, steam and waterproofing.

Due to its low price, ease of operation and installation, it is actively used in construction. The most popular brands are Izolon, Vilatherm, Energoflex, Polifom, Temaflex.

If the need arose glue the foam insulation, experts recommend two-component adhesives based on methyl acrylate. Such compositions are distinguished by high adhesion and are suitable for working with polyvinyl chloride, polyethylene, polypropylene. An example is the well-known Easy-Mix PE-PP adhesive from WEICON.

Usually, in order to achieve high results in gluing foamed polyethylene, the following procedures are additionally required:

surface treatment sandblasting or grinding,
physical treatment, such as thermal fire,
chemical treatment (usually the fluorination method is used).

But when using "Easy-Mix PE-PP", you can do without additional preparation and surface treatment due to the "primer" included in the composition, which changes the structure of the materials to be glued, after which they easily adhere.

The use of Easy-Mix PE-PP glue for working with foamed polyethylene both on a production scale and at home allows you to reliably and quickly bond materials, while it is ready to use immediately after opening the package, it is easy to dose and mix, as well as to apply.

The glue has a soft pasty consistency, is not afraid of conditional "aging" and retains its properties for a long time even in open areas.