Clerical glue: composition and application

Clay became a companion of human life for a very long time. The first glue, according to archaeologists, appeared 9.5 thousand years before our era. It was made from various components of animal origin. Bones and tendons, fish scales and natural resins were the main constituents of the adhesive mass. Stationery glue has become the most common, as used by the population from small to large.

Creation of glue

Brew from natural materials and animal wastes our ancestors used up to the 20th century.

When science began to develop rapidly, people had increased knowledge about the quality and properties of materials and substances, artificial substances began to appear to create glue. The first to receive a patent for invented glue was the chemist Leo Bakeland. This happened in 1901. And in 1909, according to his patents, they began to produce phenol-formaldehyde glues with electrical conductivity. Clay stationery appeared in the late thirties - early 40s of the last century.

Now high-tech equipment is used for the production of glue. The process is increasingly automated. At a modern factory, they can perform the full process, from the production of a bottle to the labeling of labels on it.

Modern market

Every year, the chemical industry produces more than 100 million stationery glue packs.

Turnover sales for the year is estimated at a minimum of $ 10 million. Producers say that the demand for clerical glue does not increase, but is at a stable level. The form in which the product is advancing is changing. There are new types of pencils, stickers and tapes with high adhesive characteristics. The highest quality products are produced by such countries as South Korea, Russia, Malaysia and Germany.

Purpose of the glue

The main goal of any adhesive is the combination of two surfaces. All of them differ in composition and purpose. They have different smell, color, they are drying and not drying out. The clerical glue is used for gluing paper of different density and cardboard. Also it can be used for domestic purposes.

Characteristics of clerical glue:

• Drying.
• Frost-resistant.
• Transparent or white.
• Can be liquid and solid.

The manufacturer must obtain a quality certificate for clerical glue. The composition is tested for toxicity and compliance with environmental requirements.

Types of clerical glue

Glue of a liquid kind happens: silicate and glue PVA clerical.

Characterization of silicate glue allows it to be used also in everyday life. The second name is liquid glass. It is used in the national economy. To work with paper, it is not convenient, it is very spreading. In recent decades, it is used less often.

Clay stationery PVA glues easily paper, cardboard, photo paper. The demand for it is still there, it is more viscous, which makes it possible to control its spreading during application.

Composition of office adhesive

Silicate clerical glue, the composition of which determined its name, is now used more in construction. Its main components are silicate, polysilicates of lithium, sodium and potassium. It happens only in liquid form.

The clerical clerical PVA has a decoding: polyvinyl acetate. It is an aqueous solution of this substance with the addition of a plasticizer and modifying additives. In addition, there is a solid clerical glue. Its composition may differ by the basic substance. This can be polyvinyl acetate (PVA) or polyvinylpyrrolidone (PVP). Glue PVA can be several brands that determine its strength:

1. The universal;

2. super or extra.

For use in office purposes, the first brand is required. Super or extra can be used in furniture production and construction.

Forms of packages

Clay stationery is sold in various forms of packaging. Liquid glue is packaged in bottles of different sizes. The main difference is the shape of the tube and the cap.

Super - the cap is a narrow, elongated, unscrewed cap. The glue is applied to the surface with this cap.

A cap - a brush is used more often in vials with silicate glue.

It is easy to use for liquid consistency glue.

The duck-cap is like a super-cap, only larger, has a wider opening.

Glue - a pencil stationery now is the most common option. It is the most convenient to use. It is applied easily, does not spread, is economical, has excellent adhesive properties.

Glue spray is a new kind of clerical glue that also helps to glue wood, polystyrene and metal.

Use of office glue in everyday life

People have found many more ways to use clerical glue. Technical characteristics allow it to be widely used in everyday life. Let's consider further, as it is possible to use still silicate glue or glue PVA.

Silicate glue or liquid glass is a substance used in construction. The main purpose of use is waterproofing.

Variants of use of silicate glue.

• Add to the paint for facades. Gives firmness.
• Treatment of walls and floors in the bathroom for sealing.
• It is used for waterproofing foundations.
• Add to cements and concretes, obtaining new brand solutions.
• Used to make a special putty, which is covered with water pipes.
• Impregnated fabrics will become strong protective materials.
• Gardeners process the places of pruning of trees and shrubs to protect against harmful bacteria.
• They cover the surface, which must be protected from exposure to ultraviolet light.
• Used for washing dirty dishes and pans.

A recipe for removing carbon deposits from frying pans using silicate glue.

This way our grandmothers and great-grandmothers used. It is necessary to take a metal basin or a large saucepan. In it, pour one tube of silicate glue. Place all frying pans and covers there. This capacity should be put on fire and boiled. Miraculously, all the carbon deposits come off the dishes. After all the dishes should be thoroughly rinsed under running water. There is a similar recipe with the addition of laundry soap and soda ash.

Glue PVA is also well known for builders and furniture makers.

Variants of use of PVA glue.

• Used for furniture assembly.
• Good fixes the carpet to the floor.
• It is reliable when fastening linoleum.
• Used for gluing facing tiles.
• Will be useful when gluing wallpaper.
• Add in the primer and putty, in water-based paint.

PVA glue has gained popularity due to its non-toxicity, fire safety, high adhesive ability and ease of use. They can glue together paper, leather, glass, cloth, plastic, metal.