How to glue wood to wood? The choice of glue and the rules for its use. The best carpentry adhesives for wood - what kind and for what Wood glue is waterproof

Specialists working with wood are well aware that one cannot do without a high-quality adhesive composition, neither in the manufacture of furniture, nor in small repair work Oh.

Can be used like good old recipes adhesives for wood, and purchase modern mixtures that act quickly and efficiently and are actively used in production.

The choice of adhesive depends on the task at hand. Some options will help connect the parts together, others fix the wooden product, others are suitable for processing joints and protecting against moisture.

Modern adhesive mixtures are distinguished by heat and moisture resistance, rapid hardening, durability and strength of the connection.

Types of adhesives for wood - how to glue

Consider the most popular types of wood glue.

Joiner's glue. It is traditionally made from animal bones and skins. Adhesive properties are attached to the protein included in its composition. Until relatively recently, wood glue was actively used in the furniture industry and woodworking. Today it is rarely used, except for hand veneering. It is sold in the form of granules or grains, which must be dissolved in water using a special glue cooker. Jelly-like glue is also available and is liquefied directly in a glue pot or in a container placed in hot water.
Animal Based Blends safe, non-toxic, give a solid adhesive seam, amenable to grinding and re-softening. Worthy of attention and moisture resistant wood glue casein. It holds wood well, as well as paper, leather, various fabrics. Casein powder is mixed with water until the consistency of liquid sour cream is obtained. Then it is applied to the parts and left for five minutes. Next, the parts are tightly compressed. It can leave marks, so use it carefully.
Hot glue. To use hot melt, presented in the form of cylindrical sticks, you need a hot-melt gun. The composition is convenient, quickly hardens, therefore it is actively used for the manufacture of templates and models. Also in stores are adhesives in the form of thin sheets. They are placed between the base and the veneer and heated with an iron.
PVA wood glue. PVA is available, inexpensive and convenient option. An aqueous PVA emulsion hardens due to the evaporation of moisture or its absorption by a tree. The non-toxic composition is perfect for simple repairs at home. The shelf life is almost unlimited if stored at room temperature. Semi-plastic PVA is characterized by a tendency to "creep", but this property usually manifests itself when increased load. Standard PVA is not resistant to moisture, however, manufacturers offer waterproof solutions for outdoor work. Yellow PVA with a thick consistency is more resistant to moisture and heat than white, and is easy to sand.
Urea-formaldehyde adhesive. It is considered a waterproof composition that fills cavities well, hardens quickly. Available as a powder to be mixed with water and then applied to both surfaces. Some adhesives are made and shipped with a hardener that is applied to one part and a mixture of powder and water to the other. The connected parts are additionally fixed for grasping with a clamp. When working, be sure to use goggles and gloves, provide access to fresh air.
Resorcinol adhesive. This option is resistant to various weather conditions, such as sun and moisture. It is a two-component, consists of a hardener and resorcinol-formaldehyde resin. Some types of the mixture are sold immediately in liquid form, or one of the components has a powder composition. The glue, after hardening, gives a brown seam, which will be noticeable when working with light wood. For faster solidification, a temperature of at least 15C is required.

Wood gluing technology - blanks and parts

Surface preparation

For successful gluing of wood, it is necessary to thoroughly clean the surfaces, degrease them, make them smooth and even. The presence of roughness will not help to obtain a better seam, so they try to get rid of them.

Adhesive technology

Usually the mixture is applied evenly thin layer for both details. Two-component options are applied differently - a hardener is applied to one part, a second resin, and then the parts are combined to start the reaction.
Most often, it cannot do without clamping parts, for example, using clamps. As a result of close contact, excess glue is squeezed out, and while it has not hardened, they can be carefully removed with a damp cloth.
If a contact adhesive is used, the parts will bond immediately after joining. Some types allow for some time to correct the position of the parts before setting.
Also, depending on the technology and method of bonding wooden parts they are divided into two groups - cold and hot gluing.

Cold bonding of wood

This method of gluing does not involve heating the mixture. For work you will need:

glue,
clamp,
wimes,
special clamps.

Clamps are cold pressing equipment, indispensable in gluing parts from timber, frame, panel. Cold bonding involves the use of compounds based on PVAD. Due water base glue is quickly absorbed into the wood and gives reliable connection. Hardens in an average of 15-25 minutes, then requires holding under pressure for an hour.

VIDEO

Hot bonding of wood

This technique convenient for gluing thin sheets, involves heating the adhesive with electricity or steam. After heating, it hardens in 30-40 seconds.

Presses for gluing wood are divided into:

inclined, horizontal, vertical depending on the location of the shield,
electromechanical, manual, hydraulic, pneumatic, depending on the type of drive,
positional and pass-through type based on the mode of operation,
steam, electric, HDTV, water, depending on the type of heating.

Glue is applied to the parts in advance, then placed in hot gluing presses. Pressing takes up to 5 minutes, and the complete solidification of the adhesive occurs already outside the pressing equipment.

Thus, for high-quality and reliable connecting wood parts with glue today you can use both inexpensive PVA, which are suitable for home use, and professional types from well-known manufacturers. The latter provide a strong and durable connection of parts in industrial scale, facilitate the work of craftsmen in the manufacture of furniture and other structures made of wood.

One of the most controversial materials, about which even experts do not have an unambiguous opinion, isglue for wood: which is better, more reliable and easier to use? The question is very interesting, requiring knowledge of the features and properties different types glue.

In contact with

What is it needed for

Wood glue is used everywhere and constantly. Everyone at least once in their life glued some wooden parts, repaired broken things or pieces of furniture.wood gluingproduced by slightly different methods than the connection, for example, rubber or plastic products . It is not required to perform standard operations: applying the composition, drying for about 10-15 minutes and pressing the parts strongly against each other.

Wood requires a different approach, which is due to the structure of the material, the individual properties of each species. It requires a different adhesive composition that can be absorbed into the material and create a strong film. Many formulations have now been created, from old-fashioned traditional carpentry adhesives to the most modern synthetic formulations. Question,how to glue a tree, not at all simple.

Varieties

Materials for gluing wood have different composition and appointment.

Some of them are universal, the connection of wooden parts for them is just one of the many uses.

Others are intended only for gluing wood and have no other uses.

Choosing how to glue wood to wood, you should decide on the type of composition and its properties, which should be discussed separately:

PVA

One of the most common compositions familiar to everyone since school days. Polyvinyl acetate dispersion, as this composition is correctly called, can be used to glue paper, wood and other materials. The main condition is the ability of the bonded material to absorb moisture. It has the appearance of a milky white thick liquid. When dry it becomes transparent. Mostly, PVA glue is used for gluing wood , since it is very convenient for this. Its features:

is issued in a ready-to-use form;
dries fairly quickly;
does not stain the gluing, the glue squeezed out when compressing the parts can be removed without consequences;
diluted with water, the adhesive that has fallen on a clean surface is easily washed off or wiped off with a damp cloth.

There are different brands of PVA glue designed for construction works, universal or carpentry compositions. Setting time - about 20 minutes (depending on the brand), complete drying - 24 hours.

Attention!If PVA glue was stored in unheated room and frozen, then after thawing it can not be used.

Epoxy

it two-component composition, consisting of epoxy resin and hardener. Being mixed in desired proportion, the material solidifies into a solid solid mass.

The curing process of the composition is purely chemical in nature, so the presence of air is not required for this.

It is noteworthy that epoxy adhesive not intended exclusively for wood , it can glue a variety of materials that do not have chemical contradictions with the adhesive components.

For him, the correct dosage of the components during mixing is important: if there is too much hardener, the mixture “boils”, bubbles and quickly turns into a solid foam mass. With a lack of hardener, the mass does not gain the desired strength. Freeze time at different brands can vary from several minutes to one day, most often - several hours.

bf

Glue BF in wide use appeared in the late 70s and early 80s of the last century. It was considered to be the most versatile and reliable composition, capable of tightly connecting anything. In fact, this is not the case, the material has a lot of restrictions or conditions for use.Designed for bonding metals with non-metals, plastics and other materials.Wood is not exactly absent from this list, but it is far from the first place. However, if neededwood glue, waterproof and frost resistant, then the brands BF-2 or BF-4 fully correspond to this definition. The gluing technology is quite inconvenient: the need to apply an adhesive layer, dry it “to the touch” and compress the parts for a while to gain strength of the adhesive layer.

Heat resistant compounds

Wood according to your technical properties is not subject to heat treatment. Therefore, specialized adhesive thermal compositions for gluing wooden products simply do not exist., but some types of heat-resistant compounds can be used for these purposes.

Exist different kinds such compositions. These can be synthetic mixtures, various modified varieties of epoxy glue.

This group can include special material, produced in the form of rods, which is applied with a glue gun. Melted up liquid state the material is applied to the surface to be glued and pressed tightly against the second part. This method is simple and convenient, but requires the constant purchase of adhesive rods and connection to the mains.

carpentry

Joiner's (glutinous) adhesives are one of the oldest groups, used in ancient times. Nowadayswood gluemainly used for restoration antique furniture or acoustic repair musical instruments. The reason for this limited use is the difficulty of working with wood adhesives, which are sold dry and require preparation for use.

Joiner's adhesives are of several types:

bone;
mezdrovy;
sturgeon.

The first two are made from horn plates or animal skins, the last one is made from leather. sturgeon fish. It is believed that the bone composition is better than the skin, and it is very difficult to find sturgeon, it is used mainly by violin or guitar makers.

Important!The main feature of wood glue is reversibility. The adhesive can be soaked in hot water, taken apart for repair and reconnected without damaging the material of the part.

Syndeticone

Syndeticoneglue for gluing wood to wood- a modification of wood glue, invented in 1878.

Since then, this composition has been widely used for a long time, but today its use is almost complete.

It is noteworthy that the name of the glue does not indicate any initial composition, it is only a reference to the original name of the glue - "Syndeticon", as the inventor called it.

The composition includes the following components:

wood glue;
sugar;
slaked lime.

It takes about a day to make it, which also became the reason for the refusal to use it.

Polyurethane

Polyurethane adhesive for wooddiffers in high working qualities and high cost. The composition is suitable for gluing wet wood, can be used both indoors and outdoors. The glue foams when dry, filling possible cavities and stopping moisture or cold from accessing them. The glue joint can be operated at temperatures from -30° to + 100°, in addition, polyurethane is the bestwaterproof glue for wood.

casein

Another very old natural composition. Its main component is casein, a milk protein obtained from low-fat cottage cheese. It is produced in the form of granules from brown to white color- the higher the quality, the lighter the granules.

The material is truly universal - in addition to gluing wood, it is used in manufacturing, painting, and printing.

Traditionally used as an environmentally friendly glue for furniture high class. At the same time, the surfaces to be glued must be protected from getting glue on the front parts of the parts, since it is quickly and deeply absorbed, leaving dark spots. In addition, the material is hygroscopic and can deteriorate: become moldy, there is a possibility of insects. It must be stored in a tightly closed container.

Pasty

Pasty adhesives are used to connect poorly profiled parts. Thick material fills small voids like putty, sealing the seam and stopping moisture, cold or other undesirable influences. Usually gluing wood is not among the main specializations of such compositions, but for uneven surfaces this choice is fully justified.

Basic properties

good glue for wood must have a number of specific qualities:

strength;
resistance to water;
good adhesion to any type of wood;
non-toxic composition;
versatility of use;
high drying rate;
the composition must be sold in a ready-to-use form;

Many of these properties modern formulations, for example,wood glue "Joiner". Most traditional adhesive compositions, for all their merits, require too long and laborious preparation, which makes the work inconvenient and reduces productivity.

When choosing glue for wood, you should pay attention to some points:

If gluing is done forever, then it is best to use some kind of synthetic irreversible composition. To connect parts that can later be disassembled, for example, musical instruments, it is better to choose traditional types - bone, casein and the like.
Do not use casein glue to glue light wood. The seams will darken, the work will look sloppy. The best choice- glue "Joiner", which, when dried, becomes approximately the same color as the wood.
When buying PVA glue, pay attention to its consistency. If there is a stratification of the material into more liquid and thick fractions, then the adhesive was frozen during storage or transportation. Such material cannot be used, it has lost its qualities.

Homemade composition recipes

Some traditional views glue can be prepared independently, at home:

Casein glue is made from fat-free cottage cheese, which is soaked in soda solution and washed under running water. Then the mass is dried to the state of a dry powder, which is diluted with water immediately before use.
Sometimes an ordinary paste helps to get out of the situation. It is brewed from flour (6 tablespoons per 1 liter of water) by adding an aqueous solution of flour to boiling water. The mixture is brought to a boil, cooled and used for its intended purpose.
Carpentry glue is made in a water bath: in a container in a container with hot water heated on a stovetop. Ready wood glue has a liquid and fluid consistency, is used asfurniture glue for wood.

Important!Wood glue has a sharp, stale smell, sometimes even too sharp. Before you cook it, you should consider whether to use the finished composition.

General rules for gluing

Each type of glue has its own specific uses. The general rules include the need to clean and dry the surfaces to be glued, pre-dry assembly without glue to check the accuracy of the fit. If the parts cannot be pressed together with a little hand force, then you need to postpone gluing and fit them better. The connected parts are pressed and fixed with clamps until the glue dries completely (usually it is recommended to withstand them for 24 hours).

The use of glue to join wood pieces is old-fashioned but quite efficient technology. Modern synthetic compounds are able to repeatedly increase the strength and stability of the connection, ensuring high-quality service of the glued parts.

Very often, during a variety of repairs at home or on personal plot may face the need for high-quality bonding of various wooden elements between themselves. Or with a more complex problem - the need to glue wooden elements with other materials. The age-old question arises - how can this be done, and what glue is the best better fit to solve this problem?

Moreover, presented in modern market the variety of adhesive compositions of the most different price categories introduces the buyer into additional confusion - after all, you want to do everything reliably, without overpaying "for the brand". So in fact, such a diverse assortment only makes it difficult to choose.

So before you go shopping building materials, you need to thoroughly study the main characteristics of various adhesive compositions, decide what exactly you need to glue, clearly limit your financial capabilities in resolving this issue and understand what you will need to purchase. Because, you yourself perfectly understand, any seller is interested in selling you the most expensive product - and if you yourself understand what you need, then the probability of losing money on overpayment will be much less.

Assortment of different types of glue

Varieties of glue and the main characteristics of the chemical composition

The characteristics that mainly determine the purpose for which glue is used include the following:

Drying period - the time that must pass from the moment the adhesive applied to the surface of the two elements hardens and it will be possible to make sure that the parts are firmly connected and do not stick.
Adhesion density is a value determined by the force that must be applied in order to detach two glued surfaces.
Moisture resistance - is determined by the level of humidity at which the adhesive begins to lose its properties.

In the vast majority of cases, when working with wood, the following types of glue are used:

glue BF;
epoxy adhesive;
casein glue;
hot glue for wood (resistant to high temperatures);
polyurethane glue for wood;
polyvinyl acetate glue (PVA);
syndeticone glue;
glue "Moment" (a variety intended for wood);

One of the most reliable compounds, but it is very toxic. Poisonous even its evaporation, which occurs when heated.

The main criteria according to which the adhesive composition is evaluated

Two things are of the greatest importance when choosing an adhesive - this is its chemical composition and quality (which, in turn, is determined by the three characteristics mentioned above). Great importance also has the nature of the work being done. You must admit that it is one thing to glue furniture that will be inside the room all the time, a completely different moment is the implementation facade works or gluing any elements that are constantly on the street. In the second option, it is clear that the glue will need to be much more stable.

Bonding required increased strength, resistant to high humidity and the action of light, and in addition - immunity to various adverse factors of biological origin.
What is more interesting is that it is necessary to take into account not only the nature of the work performed and the place of their implementation, but also what types of wood will need to be glued together. This is due to the fact that it is important when choosing an adhesive composition that the moment whether elements consisting of the same type of wood or of different ones will be glued together.

Thus, PVA glue is applied to the prepared adhesive surface. It is the application of a thin strip that allows you to connect even the most small parts. However, in this way it will be possible to glue only wood with wood.

That is, the main goal for any adhesive composition is the formation of an inseparable connection of parts. The chemical basis of any adhesive is a binder or adhesive component, and in addition - a solvent or accumulator. In that case, if technological process provides for instant hardening, it will be necessary to include a special crystalloid hardener in the adhesive. And if it is necessary to preserve the properties of the adhesive for a certain amount of time, a stabilizer is needed. There are some types of glue, which include plasticizers - thanks to this, the adhesive becomes resistant to action. low temperatures and high humidity. In principle, on each package of glue its composition is indicated and finding the right composition, clearly understanding what you need and what each component gives, will not be difficult.

In this case, the turner violates safety regulations - he is going to work with a highly toxic compound and did not even bother to wear gloves. This can lead to burns or allergic dermatitis.

Below will be presented the characteristics of the physico-chemical composition of the most commonly used adhesive mixtures.

PVA (polyvinyl acetate adhesive)

Everyone who has ever worked with wood remembers this container - PVA has been used for more than 100 years and does not lose its relevance.

Ideal for reliable bonding of parts made of all types of wood. It is completely non-toxic, harmless to health. It can be applied to the surface to be bonded, regardless of its configuration, in addition - this composition is characterized by long period storage, designed for maximum load up to 60 kg per 1 cm².

Technical characteristics of PVA glue: in the vast majority of cases it is used for gluing furniture, various parts from any kind of wood. The only drawback of this glue is that it has a low moisture resistance index. That is, with its help it will not be possible to glue wooden surfaces that are on the street. In addition, the use of PVA is not recommended if it is necessary to glue wood with any other materials.

Preparation of the adhesive surface - in this case, the surface of glass and wood will be glued using a special adhesive BF-2

Glue from the BF series specially designed for wood

This composition, unlike PVA glue, allows you to reliably connect not only elements of wood of various species, but also glue wood with other materials - glass, plastic. To connect wood and metal, it is necessary to use BF glue of the BF-4 and BF-2 series. It should be noted that BF-2, which has good resistance to high humidity and temperature, is best used for internal works, and BF-4 - for outdoor.

In order to be able to glue this part, it will still need to be processed with a special abrasive tool.

However, in order to achieve a truly reliable connection when using this adhesive, a certain method of its use must be followed.

Glue is applied in several layers:

the first layer (otherwise referred to as the primer) must be allowed to dry for one hour at room temperature or 15 minutes in special thermal ovens;
and the second (final) layer, applied already on the dried first layer, will take only a few minutes to harden.

After that, the glued elements are connected to each other, allowing the glue to dry and harden completely. The gluing of wood, made in this case, is able to withstand high loads - it will be similar to fusion.

In this case, the glue was not chosen correctly - excessive pressure was applied to the joint, and the glued surface simply could not stand it.

Glue thermostatic wood of various species - a reliable and expensive option for gluing wood

As it becomes clear from the name itself, the use of this adhesive is indicated in cases where it is necessary to carry out work in conditions of elevated air temperature. Its application is carried out only with the help of special "guns" that provide a thin stream of glue.

Another important advantage of this technique is the ability to glue even the smallest wooden products. This adhesive composition hardens in just a few seconds. Bonding wood with this composition is one of the most reliable.

In this case, wood parts are to be glued, and every mm of this part is important. So the machining is done on a lathe

General rules that must be observed when gluing together both wooden elements and wood with other materials

Regardless of which type of adhesive is used, these rules will be the same in all cases and following them guarantees a high-quality, reliable connection of surfaces:

Pay attention to this craft - in this case, the connection of rounded parts was made using heat-resistant glue. It is very difficult to do this due to the small area of contact surfaces

Adhesive that is suitable both for joining wooden surfaces and for joining glass and wood. Moisture resistant, used for outdoor

But this is a special mounting adhesive. It is suitable not only for bonding wood and glass, but also stone, iron and organic glass. Hardens very quickly, not susceptible to moisture, resistant to high temperatures

Conclusion

At right choice glue and fulfilling all the requirements for carrying out these works, it becomes possible to obtain strength indicators at the place of gluing higher than the wood itself. In principle, this can be done even when using the simplest PVA.

So there is no point in acquiring any special compositions - any surfaces can be securely connected using the simplest glue, which is always on sale at affordable price. It is only necessary to understand what exactly needs to be glued and to observe safety measures during work aimed at connecting the spirit of surfaces through an adhesive composition.

There are more and more different options for gluing wood species on the modern market. Thus, the question arises - how to choose the right glue for wood? To accurately answer it, it is necessary, first of all, to determine the type of surfaces themselves that we will glue, and the purpose of the glue itself. In this article we will try to tell you how to properly glue wood to wood and other materials.

What kind of glue to glue the tree, which one is better?

Exist various options similar glue:

- PVA glue for wood.

We all know a white, translucent adhesive that instantly "seizes" the surfaces of all types of materials to be glued. We have known him since school, when at the lessons of fine arts the teacher suggested using PVA.

Why PVA? It is one of the few "fast" adhesives that bond surfaces within twenty minutes. At the same time, if we are talking about gluing wood species, a completely similar glue hardens within a day. Accordingly, during the day the surfaces will be firmly glued, and it will be possible to create various types of loads.

- BF series.

There are various options for BF glue, each of them has its own number. The most popular are BF-2, BF-4, BF-6. If reach certain temperature- up to 80 degrees - you can accelerate the "setting" up to fifteen minutes, and at normal room temperature, such a substance will firmly glue the tree in an hour.

- "moment" for a tree.

Glue "moment" is the most common brand of adhesive for various tasks related to construction. But we are wondering - which glue is best for wood? In accordance with our request, the manufacturers of "moment" produced a special substance, "moment" glue for wood. They can glue absolutely any surface.

If our task is to answer the question: what glue is better to glue a tree to a tree, then the “moment” answers both it and other questions related to gluing wood with any other material.

- heat-resistant adhesive.

It is most popular for those types of work, including carpentry, where the wood is exposed to various thermal effects. It does not collapse and does not stick surfaces even at high temperatures.

In this case, many are puzzled: with what glue to glue the tree if it will be subsequently exposed? The answer to this question is heat resistant adhesive. Unlike similar ones, it does not crumble and does not collapse itself, and does not destroy the structure of glued surfaces during thermal exposure.

- casein glue

This glue, unlike the previous one, has the purpose of waterproof glue. That is, the treated surfaces may be exposed to a large number moisture along with high temperature. Among the known adhesives, this one is one of the most popular, it completely hardens within 20 hours, and the "seizure" occurs in 8 hours.

- joiner's glue

Joiner's glue is a solution designed for gluing and joining various items from wood or plywood, fiberboard. To create this glue, two types of compositions are used: mezdrovy and bone. The first type is considered to be the most effective, and the seams obtained as a result of its use become as strong and durable as possible. In this case, much depends on the observance of the technology for the preparation of glue.

When gluing surfaces with this solution, it must be applied to the main surface once, and to the end surfaces twice. After applying and gluing, the surfaces of the products to be glued should be firmly pressed against each other only after a few minutes, then the wood glue will not come out. In order for the seam to be the most even and durable, the thickness of the adhesive should not exceed 0.1 - 0.15 mm.

- epoxy adhesive

Epoxy glue has gained great popularity, because, in addition to wood, it can glue any known materials, it can perfectly smooth the surface, and quickly fills any cavities. When the mixture dries, it simultaneously acquires the ability to insulate electricity and is immune to many chemically aggressive substances, it is not affected by fat, oils, surfactants.

As a rule, modern epoxy adhesive is a two-component mixture consisting of resin and hardener. Many compositions of such glue do not require heating, so it is enough to simply apply them to the surface and glue it. It can be used to create numerous

Compound
Mezdrovy
Isinglass
Bone
casein
moisture resistant
How to prepare a mixture
Titebond
Moment
Titanium
Selection rules

Joiner's glue is intended for joining parts made of paper, cardboard, wooden planks, bars, hardboard. The material is inexpensive, safe, has a natural composition.

Compound

The basis of wood glue, the main agent is animal protein.

According to the type of raw material there is glue:

mezdrovy,
fish,
bone,
casein,
polyvinyl acetate (PVA),
moisture resistant.

For carpentry, all types are used.

Mezdrovy

The main active ingredient is obtained by processing the skin of animals. Protein - subcutaneous layer without fatty tissue. It contains oligopeptides. They contain cysteine, which forms bridges-ligaments for reliable connection of parts.

Mezdrovy joiner's glue is produced in the form of:

powder,
tiles,
scales.

Isinglass

For the production of fish glue, fins, scales, and swim bladders are used. It turns out a solution suitable for gluing identical and dissimilar surfaces. The only drawback is the high price. Produce glue in the form of dry scales and granules.

Bone

Made from animal bones. The composition contains:

collagen,
gelatin,
cysteine.

These substances are viscous, reliably glue the surfaces of wooden products. The price of the material is low. You should choose transparent formulations: they are better than crude, cloudy, with impurities.

casein

Includes:

casein,
kerosene,
blue vitriol,
sodium fluoride,
hydrated lime.

Flaws:

Significant shrinkage in volume.
Changing the color of bonded surfaces.
The short shelf life of the prepared solution is several hours.

Holds wood parts well.

Raw materials for the preparation of casein adhesive solution available as a dry powder.

PVA

PVA glue is used in carpentry and other areas. The solution is sold ready-made.

Characteristics:

elasticity,
secure grip,
transparent layer,
stability of the finished seam.

PVA adhesives differ in properties. Some are water-resistant, quick-drying.

moisture resistant

A waterproof mortar for gluing wood can be prepared from slaked lime and freshly curdled cottage cheese. The components are mixed in certain proportions to a working consistency.

How to prepare a mixture

To prepare the working material, ready-made grain, dry powders, tiles, granules are taken. They are carefully crushed, bred warm water according to instructions. Waiting for the active components to swell. Then use. Store in a hermetically sealed container. All formulations, except for casein, retain sticky properties for several days.

The cooking method is written in the instructions on the package.. At different manufacturers mixtures may differ in composition. Consistency matters. In the description of a specific adhesive, the required amount of water is indicated. It is designed to obtain a mixture of a certain viscosity. If you need more to work liquid material, the liquid is added in small portions, each time the paste is thoroughly mixed.

Before gluing the surfaces to each other, they are cleaned and degreased. Then a thin layer of the solution is applied to one of the parts, the planes are pressed. To increase the effect, a load is installed on top, it does not allow the workpieces to disperse. Bonding occurs in 2-3 hours, drying - in 2-3 days. The exact terms and conditions are specified in technical specifications each composition.

Modern adhesives based on synthetic

Often used ready-made adhesives industrial production: Titebond, "Moment", "Titan".

Titebond (from 200 rubles, 0.296 liters)

Adhesive for wood Titebond American company Franklin International is used in the manufacture of plywood furniture, floor coverings made of wood, in the finishing works wooden products. The composition includes synthetic and natural polymers without solvents. This allows you to get excellent adhesion of surfaces without damaging them.

Titebond II Premium Carpentry Adhesive is a high quality replacement for traditional wood and paper bonding compounds. It is used in the production of door and window blocks, frames, furniture assembly. This is a composition with high level moisture resistance, can be used for outdoor work, assembling external door and window fillings, attaching decorations to a wooden facade.

Bonding strength reaches the strength of wood. The connection remains intact for many years.

Moment (from 300 rubles)

Joiner's glue "Moment Super PVA D3" manufactured by Henkel has a Soviet analogue - DF51 / 15V. This is a good waterproof adhesive used for gluing paper, cardboard, plywood, and other materials of wood origin.

PVA waterproof is added as a plasticizing agent in concrete solutions to increase the plasticity and water resistance of the working mass, the finished stone. Connection with cement mortar increases adhesion to the surface covered with a coupler or a tile.

The letter D in the name indicates the degree of resistance of the material to water, 3 - enough level. 4 - more high class, it is applied for special works, expensive.

Titanium (from 200 rubles for 500 ml)

Glue "Titan" is universal, reliably glues:

plastics,
glass,
paper,
wood.

It is often used for the manufacture of various wooden products.

"Titanium Universal" is a quick-drying adhesive suitable for work with wooden surfaces. It quickly gains strength, reliably connects surfaces without damage, and becomes transparent.

Adhesive mastic is suitable for finishing works, bonding wooden beams, boards, sockets.

Liquid nails are also compatible with wood and can be used for finishing and decorative elements.

Selection rules

Necessary:

Take into account the scope and specifics of work. When processing a large amount of wood, it is better to give preference to powder semi-finished products because of their low price.
Pay attention to the characteristics, select the solution according to physical properties.
Find the right consistency glue.
Carefully read the information on the label, get acquainted with product reviews.

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