| Abstract [eng] |
(PP) is one of the most popular synthetic textiles. It is a synthetic polymer for the production of textile products. It is widely used because of its cheap production expenditures, universal utilization, easy recycling, and good mechanical features. In addition, polypropylene is flexible and firm, but in a low temperature it can become very fragile. Polypropylene is not resistant to aging – features deteriorate, it decomposes from light exposure, dampness, and warmth. PP materials are commonly used in various spheres: agriculture, chemistry, food industry, manufacturing, and others that may require firm and reliable packaging; initial and secondary carpet production, secondary fabrics, geotextile, cable and rope production. Thanks to their durability, light weight and usage simplicity, they are popularly used for pre-packing and transporting such goods as: flour, sugar, composite forage, grains and seeds, fertilizer, manufacturing materials, wood granules, second-hand clothes, cement. Three different drawing ratio (A-6,002, B-6,502, and C-6,869) polypropylene tape yarn were used for the research. In the centre of the analysis is tape yarn drawing ratios influence on their structure and stretch characteristics. The width, thickness and weight of PP tape yarn was measured, additionally, the statistical calculations were made: calculation of mean, absolute error, relative error, and variation coefficient. The stretch test was carried out until the absolute yarn breakage. Experimental results were analyzed in detail. After the analysis of PP tape yarn, it was concluded, that the yarn and product weight, as well as the strength features, were dependant on the drawing ratio. The features of textile products that were made from polypropylene (affected by mechanical forces and environmental factors) get worse, the elasticity contracts, the level of fragility and breakage rises, rigidity appears. Because of these factors, products tend to lose firmness, and there is a higher chance of cracking and tearing. To achieve precision, three different drawing ratios were used for the polypropylene tape yarn strength feature test. Tests showed that on the lowest drawing ration (A-6,002), polypropylene tape yarn is the thickest, widest, heaviest, and has the biggest height density, but from the perspective of consumption, it is a big flaw. The conducted conclusion is that for consumption purposes it is best to use the biggest drawing ratio yarn (C- 6,869). The achieved results are important from the scientific and economical perspective: we can predict the economically significant indicators, and reach an objective that the usage of products made out of polypropylene yarn would be even more diverse, and the mean of production- more economical. |
