Raw material of safety shoes outsoles
One of the most important parts of safety shoe is its outsole. The safety shoes outsoles should be of high quality because of its presence in industrial environments. For this reason, the raw materials of the safety shoe are generally consisted of polyurethane and thermo-polyurethane rubber for special environments. To ensure the quality of the polyurethane materials before the injection, it is first heated in an oven for one day, and then the penetration, bending and abrasion tests are applied to them. The penetration test is done daily by the experts at the beginning of the injection. In this test, the start and end of the foaming of the measured material are measured and then the amount of penetration is determined.
If the penetration test is successfully performed, the outsoles are injected separately and the flexural strength test is performed for thirty thousand bends. Imanpa guarantees its outsoles for one year, given the quality and assurance of used materials and tests.
Imanpa safety shoes toe cap
Safety shoes toe cap is one of the most important factors in safety shoes. According to world standards, the safety resistance should be 200 jules. Toe caps not withstanding 200 juts are known as a security toe caps. As the first manufacturer of composite toe caps, Imanpa has been able to take some big steps in the industry with the approval of the Ministry of Labor Research Center. In addition to lightness and resistance to 200 jules, they are also electrical and thermal insulated.
The advantage of toe cap’s thermal insulation for the southern areas of the country that experience hot summers is more obvious since it prevents the toes from heat.
Imanpa safety shoes vamp
The main attributes of shoes are their strength and hardness. To this end, the use of natural quality leather is inevitable. Generally, the safety shoes are usually made of natural leather for toe caps, and artificial leather for collars. The quality of leather is measured on a daily basis from ready to cut leather.
First, the thickness of the leather is measured to be between 1.8 and 2 mm, and then a stretch test is performed on the leather. After assuring the quality of the raw materials, the various parts of the vamp are cut in the cutting section with some blades made for each model and size and then sent into the vamp sewing section.
Injection of safety footwear outsole and its attachment to the vamp
The injection stage is one of the most important stages in the production of safety footwear. If the amount of polyurethane material applied to the mold is slightly decreased or increased, or the temperature of the material changes due to the heat and coldness of the environment, the probability of breaking the outsole significantly increases. Injection of outsole is carried out in two steps. First, polyurethane with 40 to 45 percent density is injected in the form of a shock, and in the second stage, polyurethane with 55 to 60 percent density is injected, which has anti-abrasion and anti-cut properties.
For environments with specific characteristics, TPU and rubber are used instead of the second phase of polyurethane injection. Also on request, a metal plate is used to prevent the insertion of sharp objects into the shoes at the injection stage. Prepared shoes are daily tested for the adhesion of outsole and vamp in order to measure the amount of the adhesion.