RESEARCH REGARDING THE PARTS CUTTING QUALITY FROM FOOTWEAR UPPERS COMPOSITION AND THE QUANTITY OF WASTES OBTAINED

Abstract

This paper highlights the importance of cutting of flexible parts that are part of the upper assembly of a footwear product, so that we should take into account both the quality of cut parts and the amount of waste produced during cutting.With regard to the quality of the parts being cut, it is useful to consider the directions of the minimum stretch of the hide, as well as the defective areas of the hide that should be avoided. An important role is played by the quality and condition of the blades, cutting hubs, adjusting the machine and last but not least the worker’s qualification. The amount of waste resulting from cutting should be as small as possible, because only in this way we can insure a good usage index of the hide, as well as a reduced consumption norm.To highlight these aspects we considered two models of footwear for women. We have to calculate the amount of waste resulting from cutting. We will make practical and theoretical arrangements so as to obtain an arrangement factor as high as possible, which can exceed 70%. Can be concluded that the quality of the cut parts is particularly good as it is obtained with a smaller amount of waste. To ensure an optimal cutting it is recommended to have highly skilled workers so that they conform to the rule of cutting, according to which the parts are arranged so that the maximum stress direction coincides with the minimum stretch of material.

Keywords

• Quality
• Cutting
• Leather
• Defect
• Model