Process analysis and identification of possible options to ensure an optimized material processing in a textile conveyor belt production
Kukkasniemi, Tiina (2018)
2018
Konetekniikka
Teknisten tieteiden tiedekunta - Faculty of Engineering Sciences
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Hyväksymispäivämäärä
2018-12-05
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201811212686
https://urn.fi/URN:NBN:fi:tty-201811212686
Tiivistelmä
This thesis deals with improving the material processing chain in a company producing textile conveyor belts. The aim of the research was to find out how the process related scrap could be reduced and the set target for the reduction was 20 %.
The literature review focuses on relevant topics of production development concerning this thesis, Lean manufacturing, production quality and inventory control are viewed. The structure, raw materials and the production process of textile conveyor belts are also examined. A present state analysis was made in the case company, to point out the most important factors concerning material consumption. The analysis included the separate production process steps and the used raw materials and their purchase possi-bilities concerning dimensions. The information was collected by means of interviews, check sheets and from documentations and databases.
The scrap edge cut away during the production process was found to be the largest in-dividual scrap source and it was taken as the main optimization target. The amount of scrap edge can be reduced by adjusting the used fabric raw materials. This could be performed by either purchasing narrower fabrics or by cutting the fabrics to suitable width in the case company. There have also been carried out a few big investments recently, and their influence on material usage possibilities were studied. Investments make it possible to use generally narrower fabrics and cut-to-size fabrics with certain products. With using the cut-to-size fabrics the occurrence of scrap edge could be total-ly avoided and the scrap reduction potential is highest.
Based on the alternative scenarios presented in the work the process related scrap can be reduced by 15 % to 45 %. So, the initially set target is reachable.
The literature review focuses on relevant topics of production development concerning this thesis, Lean manufacturing, production quality and inventory control are viewed. The structure, raw materials and the production process of textile conveyor belts are also examined. A present state analysis was made in the case company, to point out the most important factors concerning material consumption. The analysis included the separate production process steps and the used raw materials and their purchase possi-bilities concerning dimensions. The information was collected by means of interviews, check sheets and from documentations and databases.
The scrap edge cut away during the production process was found to be the largest in-dividual scrap source and it was taken as the main optimization target. The amount of scrap edge can be reduced by adjusting the used fabric raw materials. This could be performed by either purchasing narrower fabrics or by cutting the fabrics to suitable width in the case company. There have also been carried out a few big investments recently, and their influence on material usage possibilities were studied. Investments make it possible to use generally narrower fabrics and cut-to-size fabrics with certain products. With using the cut-to-size fabrics the occurrence of scrap edge could be total-ly avoided and the scrap reduction potential is highest.
Based on the alternative scenarios presented in the work the process related scrap can be reduced by 15 % to 45 %. So, the initially set target is reachable.