PVA glue for everyday use. PVA glue - technical specifications in simple terms

PVA glue can confidently be called the most popular and universal adhesive composition. It is used by tilers, carpenters, painters, schoolchildren, and office workers. This is a real find for gluing for household and industrial purposes. We invite you to get to know this material better, learn more about its properties, types and applications.

Characteristics of glue - what does it owe to its versatility?

In 1912, polyvinyl acetate was first produced. Its creator is the German scientist Fritz Klatt. A couple of years later, the scientist’s development became widespread and began to be produced commercially. Today, the production of PVA glue per year is more than 1,000,000 tons, without it it is difficult to imagine the life of a craftsman or an ordinary person.

Interpretation of PVA glue - polyvinyl acetate. This is the main active ingredient that is part of the glue. In addition to it, the glue contains other additives that impart plasticity. Thanks to plasticizers and polyvinyl acetate, the adhesive joint is elastic and does not deform when bent, as is often the case with other adhesives. Appearance glue is a thick, creamy mass with a pungent odor of vinyl alcohol. And this is not surprising, because if you delve into the composition of the glue in more detail, it is a solution of polyvinyl acetate in water, plasticizers and special additives. Universal PVA glue has the following characteristics:

• the elasticity of the adhesive seam is comparable to paper;
• the adhesive seam is resistant to frost and bends;
• high degree of adhesion (adhesion) and fixation of the material, inherent in more expensive adhesives;
• the glue does not contain toxic additives, so it can be used both outside and inside the building;
• explosion and fire safe;
• dissolves in organic acids;
• used in rooms with high humidity air up to 80%;

Types of glue - what to use for household and industrial purposes?

PVA glue has found its application in different areas activities. Laying tiles, gluing wallpaper, gluing plastic, cardboard, paper, plywood, use as an additive in the glass industry. To get maximum results when fixing certain materials, let us examine in more detail the varieties of this universal retainer.

Let's start with the simplest thing - PVA stationery glue. This glue is well known to schoolchildren, students and their parents, because it is used for gluing standard things that are used in everyday life: cardboard, paper, photographs. Stationery glue is absolutely safe; if it comes into contact with the skin, it does not cause allergic reactions, so even children can work with it. Among the disadvantages of PVA stationery glue, one can highlight its low resistance to moisture and negative temperatures.

For industrial purposes and repair work PVA construction adhesive is used. The list of main materials that this composition can fix to each other includes: paper, vinyl and fiberglass surfaces. The technical characteristics of construction adhesive allow it to be used as an additive that increases the adhesion of building mixtures (putty, plaster, primer).

Separately, there are specialized construction fixatives, for example, PVA wood glue. It is widely used by carpenters for working with wood and has increased moisture resistance.

PVA-M super glue is designed for working with vapor-permeable materials. Thanks to this composition, the adhesive seam is as strong as possible, and its application does not require compliance certain rules. Craftsmen use this glue to work with ceramic tiles, fixing joints of flooring, leather products, porcelain, fiberboard (chipboard), plywood, glass and wood. PVA-M super glue has increased frost resistance -40°C.

To quickly fix laminate and parquet slabs together, we recommend using Moment PVA glue. It is enough to press the fixed parts of the material together, and the glue instantly sets.

PVA dispersion is an additive to mortars that are used in the printing, footwear, textile and glass industries, as well as in the production of packaging, household chemicals and paint and varnish products. The reason for adding dispersion is to increase the adhesion and strength of the product. PVA glue is also used as a basis for the production of wallpaper glue, which fixes the finishing material to paper based to different surfaces (concrete, plaster, wood, cement).

And if you are at a loss as to which composition is suitable for your material, then it is better to stop at universal PVA glue. It has a wide spectrum of action, which allows:

• glue the fabric to a wooden, metal, glass surface;
• use as an additive for putty, primers and cement mixtures on water based;
• fix the floor covering (carpet, linoleum, tile);
• glue synthetic materials on paper base, cork, vinyl;
• fasten sheets of chipboard, fiberboard, MDF, decorative plastic.

Features of applying the composition and surface preparation

Before applying PVA glue to the surface, it should be thoroughly degreased and free of dust and dirt. Foreign particles and traces of adhesive materials will interfere with adhesion to the surface, and maximum adhesion will not be achieved. In addition to cleanliness, also make sure that the surface is dry. If you apply PVA glue to a flat and smooth surface, sand it with fine-grained sandpaper or a grater. Rough foam gypsum or foam concrete is pre-primed.

We dilute concentrated PVA glue according to the instructions, and also take into account the peculiarities of the materials that we will fix. For example, for fastening fiberboard sheets and plywood glue does not need to be diluted, but for other surfaces, the proportions are always different, indicated by the manufacturer. When applying glue to the wallpaper, carefully level the canvas on the wall with a dry cloth so that no bubbles form on the surface.

When working with flooring, use a notched trowel. It is convenient for them to level the adhesive composition, distributing it in an even layer and removing excess. When joining wood, cardboard and other cellulose materials, coat the joints with a thin layer, press them together for 1 minute, and then place them under a weight. By acting according to this scheme, we obtain the strongest possible connection. The drying time of polyvinyl acetate glue depends on the thickness of the application, but complete polymerization occurs within a day.

Humanity has not yet come up with a more versatile adhesive than PVA. Of course, there are a lot of adhesives, but only PVA has such a wide range of applications. But what lies behind this name - PVA glue, what specifications and it has special features, isn’t it harmful to health?

Polyvinyl acetate - what lies behind this word?

Polyvinyl acetate does not belong to that group of polymers (polyethylene, polystyrene) that are always in the foreground. PVA is content with an inconspicuous, but very important role - we will find it in paints, between glued boards of furniture, on a shiny coating of paper, in concrete or plaster. But not every building material of such popularity will have a centuries-old history - PVA was first produced back in 1912, and a few years later its production was established in industrial scale.

Today, polyvinyl acetate can be found both in a carpenter’s workshop and in a schoolchild’s pencil case. Like more than a hundred years ago, this material is accessible, easy to use and non-toxic, so manufacturers are following the logical path - improving proven polyvinyl acetate and compositions using it. PVA glue is one of these compositions, what is called a dispersion, or, simply put, a solution of polyvinyl acetate.

PVA glue - composition and technical characteristics

Global production of PVA glue exceeds the million-ton mark annually. In its composition, the dominant role is occupied by polyvinyl acetate - 95%, and the remaining 5% remains for all kinds of plasticizers, which give the compositions plasticity and good frost resistance, as well as additives that improve adhesion.

The technical characteristics of universal PVA glue are its low consumption - depending on the type of work, from 100 to 900 grams per square meter. The station wagon dries within 24 hours, withstands 4 freeze-thaw cycles, and is stored, on average, for about six months without changes. PVA solution is not flammable or explosive when used harmful substances does not release into the air.

PVA glue is suitable for gluing most different surfaces. However, by adding certain components to classic PVA, manufacturers have developed special compositions that are effective in various fields of application. For example, they produce specially for wallpapering, which provides adhesion between wooden or concrete wall and paper.

Glue labeled “Super” is applicable on a different scale - it is used to glue not only wallpaper, but also linoleum, and even facing tiles. “Super” glues porcelain, leather, fabric, and provides adhesion to surfaces such as chipboard. Universal adhesive suitable for gluing different combinations surfaces, for example, when you need to connect wood and tiles, cardboard and metal, linoleum and concrete. Joiner's PVA is used for gluing furniture elements into a single frame. This composition is characterized by the fact that when it hardens, it forms a translucent solid layer that tightly adheres to wooden surfaces.

For greater strength, elements lubricated with glue are clamped in a vice for at least several hours, and sometimes for a day.

Construction PVA is a dispersion designed to be added to a wide variety of mortars and compositions. To increase elasticity and durability, it is added to cement and lime mortars, plaster, and primers. Sometimes it is used as a primer, but this solution is only suitable for cheap repairs, for example, in a utility room.

A separate type of PVA also includes homopolymer dispersion, which has the highest adhesive strength. This dispersion is used in textile production, glass and porcelain industries, in the production of materials intended for repair and construction. “Moment” should also be included in a separate category - a type of glue that tends to set quickly in air. Most often, this is used when installing laminate or parquet.

PVA is used in the tobacco industry - it is one of the components of the material from which cigarette filters are made. In the textile industry, emulsions with a low concentration of polyvinyl acetate are used to impregnate fabrics and linens, which are then used for tailoring - this gives them greater wear resistance, density, and elasticity. Water-repellent mixtures are made based on PVA emulsions, which are also used to impregnate fabrics.

PVA has been an element of paint compositions almost since its invention. PVA-containing paints are highly elastic, wear-resistant, and cover surfaces made of stone, concrete, wood, plaster, and metal well. And in combination with plasticizers, such mixtures form a glossy film with increased tensile strength. Even pencils and corks are made using this glue, and the popular children's toy “smart plasticine” is nothing more than polyvinyl acetate with additives from dyes and sodium tetraborate.

It would seem that working with PVA glue couldn’t be easier. The material is non-toxic and harmless to the skin and eyes; you will only need protective equipment from accidental splashes. However, there are nuances in any business, and ignorance of them can significantly ruin your life. Most often, problems arise with paper surfaces that need to be glued together, for example, wallpaper or gluing photographs into a family album. Exists general rule– glue should be applied to a less porous surface, since it absorbs the composition more slowly.

For work you will need (depending on the volume): a roller, a brush or a foam sponge. If the glue needs to be applied pointwise, but there is no special nozzle on the glue container, or it has become unusable, use a regular syringe (without a needle) or a pipette. After use, they can be washed with water and used for other purposes. Apply the adhesive composition from the center to the edges - this way you will less stain the inside with glue. You need to work quickly because the glue on paper dries faster than on other surfaces.

To remove any air bubbles from underneath the surface, place a sheet of wax paper on top and smooth with your hand or a firm roller from the center outward. If the thickness of the surfaces is different, smooth out those that are thinner. For even, strong gluing, the materials should always be pressed against each other, or even better, put under a press or clamped in a vice, as is done when gluing wood. Holding the glued surfaces under pressure will also prevent the materials from deforming.

When gluing paper, a very important factor is the so-called “archival quality” and acid-freeness. Conventional polyvinyl acetate-based glue may turn yellow after a few years - it’s unlikely yellow spots Gluing in places will decorate your family album. There are not many such compositions among PVA-based adhesives; one of them is wallpaper glue. Of course, there is no need to glue photographs like this into an album; among stationery glues there are acid-free and “archival” ones, although they are quite difficult to find.

When gluing, you may encounter this situation - one of the layers begins to bend under the influence of the tension of the second. For example, a thin sheet became soaked and, when drying, contracted, arching more dense sheet, on which it is glued. In this case, the solution is quite simple - glue it on reverse side a thick layer of the same thin sheet that will serve as a counterweight.

When you hear the word “glue” mentioned, the first thing that usually comes to mind is PVA. It is this type of glue that has become the real symbol of this word, all of it has become a universal and irreplaceable type of adhesive for many - it is used both by schoolchildren and children to make crafts, and by carpenters, masons and other builders for use in their field. The secret to the popularity of this glue is very simple - it is quite easy to use, very affordable, and also has no toxic emissions. And all this because the composition of this substance consists of polyvinyl acetate, as well as an aqueous dispersion.

In this article we will take a detailed look at the properties and composition, technical characteristics and other parameters of PVA glue. After reading this article, you will know everything about this legendary adhesive.

PVA composition

Back in 1912, for the first time, the German scientist F. Klatt obtained a substance - polyvinyl acetate, and a few years later, the idea of ​​​​the substance was picked up by another German entrepreneur, starting the production of PVA glue on a large scale. In fact, PVA glue is over 100 years old, and even today, this type of glue remains one of the most popular and widespread.

But, let's return to the substance that is part of PVA. Polyvinyl acetate is present in the adhesive in an amount of 95%. To obtain it, you need to mix in strictly specified quantities substances such as vinalon and synthetic fiber based on so-called polyvinyl alcohol. But the variance is obtained based on the purposes for which it is needed. So, it can consist of plasticizers that will provide plasticity and frost resistance to the film of dried glue. This may also include substances such as:

- d isobutyl phthalate;

- T rickresyl phosphate;

- Eh DOS and other chemicals.

Technical characteristics of PVA

Among the technical characteristics of PVA glue, the following features should be highlighted:

- uh then low glue consumption, which of course depends on the work, but in general it is approximately 100-900 g of glue per 1 sq.m. surfaces;

- To the pouring capacity of PVA is about 450 N/m;

- V The time for complete drying of PVA is up to 24 hours (depending on the surface area and volume of glue);

- With The shelf life of PVA glue is about 6 months (may vary, depending on additional components).

The PVA glue dispersion is absolutely explosion-proof and also fireproof, so the use of this chemical substance is safe. However, when using PVA glue based on plasticizers, a small amount of acetic acid and other chemical elements may be released into the air.

Using PVA at home

Today, PVA is used very widely - for example, it is used in a wide variety of fields of activity. If we take repairs or construction, then PVA is used as a means for wallpapering walls, as well as for laying ceramic tiles. Not infrequently, PVA glue is used for gluing wooden surfaces, so it is used as in carpentry, and in construction. Of course, it is worth remembering that PVA is used in clubs, labor lessons and other extracurricular education activities - in this area, it is, in fact, the only glue used for this (superglue is used a little less).

Well, if we put together the entire range of uses of PVA glue, we get the following picture:

- To PVA glue is used as wallpaper glue, which is used for washable and paper wallpaper with various surfaces;

- y universal PVA, which is used for gluing wooden and cardboard surfaces, leather products, and also included in putties or primers;

- ToPVA lei, which is used for installation floor coverings, as well as surface cladding with ceramic tiles;

- Tostationery PVA, which is used for gluing cardboard and paper, photographs and other objects;

- With carpentry PVA glue, which has high adhesion to wood materials, this glue is very waterproof;

- G homopolymer dispersion of PVA glue, which has a very high adhesive force and is used in the porcelain and glass industries;

- P VA glue, which is used during the installation of parquet or laminate.

PVA construction adhesive

Among the listed types of PVA glue, construction adhesive deserves detailed attention. It is used by both professionals and novice builders and craftsmen. When using this glue, the main and mandatory rule is to degrease the surface before applying the glue. In addition, it is also better to pre-clean the surface of objects from dust and other particles that may interfere with gluing.

This glue is applied with a roller or with a notched trowel, but not with a brush. After gluing the two surfaces, they need to be pressed very firmly together for up to 2-3 minutes. This, in turn, will ensure very good adhesion and further bonding quality.

Among the advantages of this type of PVA glue, it is worth noting affordable price and environmental friendliness. This glue is non-toxic, so when using it there are no restrictions on the worker being in the same room with the glue, or any other restrictions. It is for this reason that this glue is so popular among the population. Let us note that today there is not even a need to invent other types of construction adhesives, since PVA copes with this task very well, plus, it has the ability to be improved, which can be done if necessary.

Tips for working with PVA construction adhesive

So, if you decide to use construction PVA to cover the surface of the walls with wallpaper, for example, you should know how to properly apply the glue. As we said earlier, the glue needs to be applied with a roller or with a notched trowel, but if you don’t have either, you can also use a brush, although in this case the work will be somewhat inconvenient.

Also, you should know that the glue mixture is correctly applied in the direction from the center to the edges of the wallpaper, and not vice versa (although everyone does it in their own way). To increase the adhesive bond, you can press the surfaces not for a short time with strong pressing, but with long pressing and with a little force. Here, you need to proceed from how much time you have for this. To get rid of any air bubbles that form, you need to smooth the wallpaper with a roller or a dry piece of cloth. It’s even better if you do this through a sheet of paper - then the bubbles will come out much faster and new ones will not form.

An aqueous dispersion of polyvinyl acetate with plasticizers and special additives is called PVA glue. This mixture is used for gluing different types surfaces: paper, leather, fabrics, wood, etc.

Types of PVA glue

• Household (wallpaper). Used for gluing paper-based products to cement, plastered or wooden surfaces.
• Building. Used for gluing paper, vinyl and fiberglass wallpaper. PVA M construction adhesive can be added to the primer composition in order to increase the adhesive and technological qualities of dry construction families, putty and plaster compositions.

• Universal (MB). Externally, it is a viscous homogeneous mass of yellowish or white. It is used for gluing fabric or paper to wooden, metal and glass surfaces, and also as a component of primers, putties, and water-based cement compositions. Universal PVA adhesive has technical characteristics that allow you to glue carpet, linoleum, tiles, synthetic wall coverings to a paper base, cork, construction mesh, vinyl and paper wallpaper, etc. The composition can also be used for gluing laminated paper decorative plastic to chipboard, fiberboard, MDF.

• . It can be used to glue products made of vapor-permeable materials in cases where increased demands are placed on the strength of the adhesive seam, but it does not require special gluing technology and the use of processed products.

PVA M super glue is used in ceramic tile cladding, installation of floor coverings, and when working with wood carpentry, chipboard and fiberboard.

• Also, this composition is intended for gluing glass, leather, fabric, porcelain products. Externally, it is a white or yellowish viscous mass without foreign inclusions. The frost resistance of super PVA glue is 6 cycles at -40°C.

• Stationery (K). Designed for gluing cardboard, paper, photographic paper. The disadvantages of this composition include low resistance to negative temperatures and moisture.
• PVA glue extra E. It is used to glue products made from vapor-permeable materials, which do not have special requirements regarding gluing technology and further operation of the products. PVA E extra glue is designed for working with wood, fiberboard, plywood, cardboard, paper, etc. It is used as an additive in putty, plaster, and cement compositions to increase strength. Surfactant glue E is used to work with fiberglass, vinyl, cork and paper wallpaper, serpyanka, construction nets.
• PVA dispersion. It plays the role of an additive for mortars used in the printing textile, glass, shoe industries, in the production of packaging, water-dispersion paints, household chemicals, for gluing paper, cardboard, wood, etc. Adding this dispersion to solutions increases their adhesion, gives the product plasticity and strength.

PVA glue - technical characteristics

• High adhesive ability (must meet the requirements of GOST 18992-80 - 450 N/m).
• Frost resistance of the adhesive joint (more than 4 cycles).
• Shelf life is on average 6 months.
• Low consumption (per 1 m2, depending on the type of work, 100-900 g of composition is required).
• Complete hardening time is 24 hours.
• Fire and explosion safety.
• High elasticity of the adhesive seam.
• Non-toxic.
• Moisture resistance.
• When hardened, it does not become excessively brittle, which makes it possible to work with gaps reaching several millimeters.
• The emulsified component is soluble in organic solvents, acetic acid, the mixture itself is partially soluble in water.

Due to its high versatility and affordable cost, the composition becomes even more popular every year.

For spot application of the dispersion, use a special nozzle or syringe.

The mixture should be applied from the center to the edges.

To increase the strength of the adhesive joint, the treated surfaces should be pressed tightly against each other. Depending on the type of glue, this can be a short-term strong compression or a long-term impact (for example, clamping the material in a vice).

You can get rid of air bubbles under pasted wallpaper by smoothing them with a roller through Blank sheet paper.

If the composition gets on the front surface of the material, remove it using anti-glue.

The speed and quality of gluing surfaces depends on how correctly PVA glue is selected.

Ease of use and versatility make PVA popular in household and professional field. For each type of material, a different type of adhesive has been developed, which provides high degree adhesion. The types of compositions and application methods will be discussed in the article.

Main types of PVA glue

Since the scope of application of PVA is determined by the type of its composition, among the varieties there are:

• household (wallpaper);
• stationery (PVA-K);
• universal (PVA-MB);
• Super glue;
• building.

Glue for household work used for paper and paper-based wallpaper. The properties of the composition make it possible to use it for wallpaper that is glued to plaster-covered walls, concrete or wooden surfaces. The consistency of the composition is a milky-white liquid, which may have beige shade and a faint odor. The composition is non-toxic, so it can be used safely in residential areas. With prolonged use, the glue turns yellow. The composition has a shelf life: the usable adhesive is liquid and homogeneous. PVA with a past expiration date is taken in clumps, which makes it impossible to apply it to the surface. If the glue is expired, then when the composition is squeezed out of the container, a clear liquid will flow first. The seam formed using household PVA can withstand temperature changes down to -40° Celsius.

PVA superglue contains additives that increase its strength after polymerization. The composition can be used when repairing a surface laid with ceramic tiles. There is no point in cooking for several loose elements cement composition, will replace it with PVA superglue, which can firmly fix the tiles to the concrete surface. The substance, like the previous version, can withstand fluctuations down to -40 degrees, so its use is allowed in unheated rooms or on the street.

Area of ​​use

Household glue is not resistant to water, so it is not suitable for rooms with high level humidity. PVA-based emulsions are used in the construction industry. Due to the content of polymerizing particles, the level of adhesion with building materials. Dispersions are used in the production of packaging and household chemicals. PVA is also used in the production of cigarette filters and paints. The textile and footwear industry also could not do without the use of PVA glue. Where it acts as a fixing or strengthening agent for fibers.

Compositions with additives that increase resistance to moisture are marked with the letter D and a number from 1 to 4. The adhesive is used for parts made of solid wood or particle board materials. Is optimal solution for furniture that is installed in kitchens or bathrooms. Fiberboard, chipboard or cork are glued together with a substance with moisture resistance D 3. The color of the consistency is transparent with high viscosity.

Features of universal and construction adhesive

Universal adhesive is used for combined materials. The composition has enhanced adhesive properties, so it is suitable for smooth surfaces. Universal composition it is applied for:

• cardboard;
• glass;
• paper;
• metal;
• carpet;
• serpyanka;
• linoleum.

For a high-quality connection, it is better to use a composition marked “MB”; PVA-M glue is cheaper and has average characteristics. Temperature threshold for universal adhesives raised to -20 degrees.

In construction, PVA is practically not used on its own, but is added to mortars as a plasticizer or amplifier. Indispensable when laying bricks, pouring screed or laying tiles. Construction adhesive has increased frost resistance, so it is used for exterior finishing. The amount of plasticizer or enhancer depends on the type of building mixture and its volume. For construction work suitable glue that is resistant to temperature changes down to -40 degrees.

Composition of PVA glue

PVA glue is made on a water basis. The components included in its composition are in suspension, so you need to shake the container with liquid before use. Polyvinyl acetate - 95% of the total composition. The prefix indicates the polymeric nature of the substance. Five percent of the composition includes solvents, thickeners, and plasticizers. The ratio of components depends on the properties that the glue should have.

Composition of stationery glue PVA and PVA-M

PVA stationery glue is similar in composition to PVA glue for household use. Office glue is available in liquid or solid form. The liquid version comes in tubes or plastic bottles for ease of application to paper. The neck is equipped with a dispenser with an adjustable gap. The hard version of stationery PVA is available in pencil format. To make the pencil easier to move on paper, the composition contains an increased proportion of glycerin, which gives the glue elasticity.

Composition and technical characteristics of PVA construction adhesive

PVA construction adhesive is resistant to moisture, so the five percent share of additives has an increased content of acetone, which is responsible for this indicator. For shorter polymerization time and to give greater strength, crushed glass or porcelain is added.

The advantages of the composition include:

• low consumption;
• high strength index;
• drying speed;
• UV resistance;
• minimal shrinkage;
• fluidity.

PVA consumption depends on the type of work performed. The minimum value is 0.1 kg per 1 m2, at the maximum the consumption reaches 0.9 kg per 1 m2. After polymerization, the adhesive can withstand a pull-out load of 550 N/m, which is sufficient for furniture products and finishing materials. The rate of glue polymerization is affected by the temperature of the parts and air, as well as their humidity. Limitations are imposed by the area of ​​the surfaces to be bonded. The average is 12 hours, it can be increased to 24. The adhesive is resistant to sunlight, which is necessary for areas that are located near windows or within the reach of light. The adhesive can withstand up to six freezing and thawing cycles.

PVA and dry construction mixtures

Dry mixtures that are used in construction consist of three components:

• binder;
• filler;
• chemical additives.

The binder is gypsum, cement or lime. At independent use the binder component does not have the required strength, so filler in the form of sand, expanded clay, screenings, chalk, crushed stone and others is used. Chemical additives are necessary to impart frost resistance, elasticity or water-repellent effect. The additives are based on dried PVA powder, which increases the cost of the mixture. It is cheaper to prepare the solution yourself using construction adhesive. Office, household and carpentry versions of the composition are not suitable, because they contain starch, which prevents Portland cement from gaining strength. For construction purposes, containers of up to thirty liters are produced with a shelf life of six months. The adhesive contains at least 50% polymers.

If necessary, apply construction adhesive to the surface using a roller or plastic spatula with a fine tooth. A plastic spatula is used when gluing linoleum to wooden surface. The glue must be applied to the center of the surface or part, after which it is evenly distributed over the area to be treated. In the absence of a roller, working with a brush is allowed, which complicates the uniform application of PVA.

When using construction PVA as a plasticizer for masonry mortar 5% PVA per weight of binder will be required. In the same ratio, PVA is added to repair mortars used for old screeds. If a composition is being prepared for pouring the main screed indoors, then the glue content can be increased to 20% of the binder. For tile adhesive, PVA is introduced in an amount of 20% of the total mass of the mixture. In plaster cement-sand mixtures, 50 grams of PVA are added for every 10 liters of composition.

Wood glue

A composition based on polyvinyl acetate is used in carpentry, despite the fact that there is a large number of adhesives produced specifically for wood. This is explained by the environmental friendliness of the material, which allows you to work in rooms with poor ventilation without harm to health. The polyvinyl acetate-based joint is resistant to static loads, which is important for furniture products. The price of PVA is lower than that of specialized adhesives.

PVA glue at home

It is not difficult to prepare the composition in a water bath at home. The first step is to prepare a gelatin solution. Ten grams of gelatin are diluted in one hundred milliliters of water for swelling. The resulting solution is placed on water bath and diluted with water until liquid state. The solution is brought to a boil and one hundred grams of white flour is gradually added to it. To prevent lumps from appearing, you will need to constantly stir the ingredients, this takes one hour. After the formation of a homogeneous mixture, thirty grams are added to it ethyl alcohol and five grams of glycerin. It will take another thirty minutes in a water bath to mix completely. You can use the glue after it has cooled. You can clearly see the process in the video below.