Bone glue in most variations is an appropriate base based on organic components. They allow you to effectively connect elements made of wood, cardboard, hardboard and other similar materials. The connection itself is characterized by maximum strength, even when the structure is destroyed, it can be seen that it is not the adhesive layer that is deformed, but the adjacent layers of wood or analogues. The mixture in question includes safe organic components that are allowed to be used for arranging educational institutions and children's rooms.
Types of bone glue
Several basic types are used to prepare the reference composition, which differ in their main components:
- Mezdra option.
- Fish composition.
- Pure bone glue.
The latest version is the most common, the composition is obtained from the bone waste of animals. The most valuable specimens are granules obtained from the horns. The set includes collagen, gelatin and cysteine, which have excellent viscosity, able to firmly glue wood and similar materials.
Mezdrovy analogue is made from waste from the leather industry. In fact, the bulk of the material consists ofsubcutaneous tissue cut during dressing. Oligopeptides and genuine leather scraps are often added to the composition of this glue. Issue - scales, tiles, powder.
Fish bone glue is prepared from bones, heads, scales, viscera, fins. This substance is the most expensive, while it was often used for icon painting and other works that require maximum care and accuracy. A composition is produced for fastening dissimilar parts, produced in the form of granules or flakes. Consider the features of all variations, as well as the features of their operation.
Wood furniture with PVA
PVA glue can be noted separately. It is completely synthetic, while being safe, like its protein variations. Its use at the legislative level is allowed in preschool institutions.
Benefits:
- Excellent parameters for joining wood, cardboard, paper.
- High elasticity.
- Moisture resistant.
- Excellent adhesion of treated surfaces.
- Transparency after drying.
Cooking
Bone joiner's glue is mainly sold in dry form. The mass is brown or yellow granules of small size, sometimes this material is presented in the form of small plates. The quality of the composition can be determined visually? The cleaner and lighter the material, the better the product. The cooking process is also very important. For example, a tile needs to be crushed to a state of crumbs, and then used in a straight line.appointment. The preparation of bone glue is divided into the following steps:
- Soaking. Powder or granules are poured with cold, pre-boiled water. Liquid from the tap can adversely affect the quality of the finished mass. Fill the container so that all the elements of the adhesive composition are covered. Soaking is considered correct if the substance becomes soft and gelatinous. The soaking process takes from 4 to 12 hours, depending on the amount of product being processed.
- Cooking. Swollen glue should be boiled for about 15 minutes in a steam bath. Maintain the temperature regime of about 60-80 degrees. The result should be a homogeneous liquid mixture without lumps. It is important not to heat the mass over an open fire and not bring it to a boil. Otherwise, the protein from which the granules are made will begin to deform, while the adhesive ability will decrease. After a thin film forms on the surface, the adhesive mixture is ready.
Features
The readiness of bone glue for wood can be checked in another way. A stick is raised above the composition, with which the substance was stirred. If the agent flows down in drops, the process is not completed, the full readiness is indicated by the flow of the mass in a monotonous stream.
For cooking natural glue, a special device is used - a glue bottle. It consists of two vessels of different sizes, one of which is inserted into the other. A large container is filled with water, and the second tank contains the resulting glue. At the next stagea small vessel is placed in a large tank, put on fire. The optimal material for making oilcloths is copper.
Recommendations
You can make your own gluten glue. To do this, you need to take two containers of different sizes. The outer shell may well serve as a tin can. Inside it, insert a tin can fixed on a wire.
You can improve the quality of the adhesive composition by adding various fixatives. This will allow the use of glue for fastening not only wooden surfaces, but also other analogues.
Among the components used, the most popular along with efficiency are the following materials:
- Olifa. About 10 grams of linseed oil or 40 granules of natural drying oil are added to the composition. This component allows you to increase the resistance of the working seam to moisture.
- Glycerin. An equally effective component makes it possible to use glue when processing leather surfaces. It is added at the rate of two teaspoons per liter of the finished substance.
- Chalk powder coupled with wood ash. After sifting this mixture, add it in a small amount. Paste improves putty properties,
- Phenol, ammonia, borax. These components are an excellent antiseptic that prevents the formation of fungus and mold.
Storage
Natural protein-based adhesives have their own characteristics. Users who usesimilar formulations for the first time, some features should be considered.
Among them:
- Adding boiled water. This is necessary if you want to make the mass thinner, or extend the cooking time of the composition.
- Optimum operating temperature ranges from 30 to 70 degrees Celsius in mode. After that, the finished adhesive mass retains its properties for two hours (subject to an ambient temperature of 20-25 degrees). Then the composition begins to cool, and its properties are lost.
- Ready wood glue is not subject to long-term storage. Within a day, it loses its properties. In this regard, for its use it is necessary to use as many granules as required for a particular operation. On the third day, the composition begins to decompose and smell unpleasant, due to its protein base. Glue is applied in layers no thicker than 0.2 mm. A thicker layer simply won't set properly.
Operation
An analogue for gluing wood furniture can be casein glue. It consists of sodium fluoride, kerosene, copper sulfate and slaked lime. This compound is not used as often as it has a short shelf life and a tendency to dry out, discolor and shrink.
Working with wood glue is somewhat different from using synthetic analogues (for example, PVA (polyvinyl chloride analogue), which is also used for gluing cardboard and wood).
Cooking
The work algorithm can be deduced as follows:
- The glue is prepared according to the above method, with precise control of the cooking temperature.
- All bonding surfaces must be dry and clean. The moisture limit for wood is no more than 10 percent (veneer is half as much).
- The adhesive mass is applied with a bast or bristle brush on both surfaces, the thickness of the seam is 0.1-0.2 mm.
- You need to wait three minutes. This will allow the adhesives to hold securely and not squeeze out when joining the parts.
- After fixing the elements, you will need to grind them together.
- It is advisable to tie the parts to be processed with twine or squeeze with a clamp.
- Full use of the product is allowed no earlier than after six hours of exposure.
Conclusions
All these types of wood glue are environmentally safe. Construction operations are best performed with a mezdrovy option or PVA. These substances have excellent setting parameters and affordable cost. For the restoration and gluing of delicate and thin surfaces, glue from fish raw materials is suitable.
Main selection criteria for wood glue:
- The lighter and more transparent the granules or tiles, the better the raw materials used.
- The most expensive and best glue comes from fish waste. It meets the highest standards. Used for restoration work and bonding delicate surfaces.
- Bone andMezdrovo composition is used for normal repairs.
