The glue stick was invented by German specialists of the famous Henkel concern in 1969.
The convenience of the invention was quickly appreciated by customers, as a result of which it brought great success to the company. In that year alone, more than a billion sticky pencils were sold in 121 countries. Since then, consumers have received a quick and clean way of bonding. More than forty years have passed, but office glue and pencil along with pens, pencils, paper clips and other
stationery takes an honorable place. This is facilitated by ease of use, economy, mobility and product efficiency.
Adhesive pencil refers to solid types of adhesives. It is designed for gluing cardboard, photographs, paper, textiles. Plastic case-stick is very convenient to use. Its design can be fun, catchy, vibrant and austere. The sealed cap is easily closed in one motion with a characteristic click and resists drying of the glue and evaporation of moisture. The unscrewing mechanism of the rod, located at the base, allows you to seamlessly twist and unscrew the glue column.
Advantages of glue are obvious:
- dries quickly;
- easily washed off hands;
- glues evenly and reliably;
- does not get dirty;
- leaves no residue;
- does not deform the glued surfaces;
- does not crumble;
- consumed sparingly;
- soluble in water.
Due to its chemical properties, an adhesive pencil displaces clerical silicate glue.
Glue stick is applied neatly and evenly with a thin layer, without spreading beyond the adhesive surface. The consistency of the stick allows you to apply both a narrow line and a wide one, across the entire width of the diameter of the rod. The adhesive properties of the glue stick appear half a minute after the application of gluten, which allows you to fix the detected errors in the process of fastening documents in time. High-quality glue should not contain lumps and clots, otherwise, when glued, the paper will moisten and get a sloppy appearance, and the core itself may turn into a viscous substance.
Glue stick. Structure
All adhesive pencils are made on the basis of a non-toxic biopolymer of polyvinylpyrrolidone (PVP) or a solid and colorless substance - polyvinyl acetate (PVA), which are used as thickeners. They glue the same way, but glue with PVP composition retains adhesive properties for longer. As a moisturizer, the composition contains natural glycerin,
providing a long life of the product and improving the properties of glue. It allows you to easily apply glue with a thin layer, minimizing its consumption.
Adhesive pencil does not contain solvents or artificial colors. It is absolutely safe for human health. Optimum concentration of adhesives ensures fast and strong bonding of materials. At the same time, the paper is impregnated evenly and does not get wet. A pigment of red or blue color is added to the colored glue stick , which disappears after the adhesive layer dries. It is clearly visible on paper and helps to apply the product accurately and accurately.