Browsing by Author "Sobhy, Prof. Dr. Nahed " supervisor ""

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    Time Waste Management in Polyethylene Terephthalate (PET) Plastic Preform Production
    (MSA university Faculty of Engineering, 2021) Gamal Mohamed " 137543 ", Youssef; Reda Ahmed " 145479 ", Ahmed; Ahmed " supervisor ", Dr. Sameh; Sobhy, Prof. Dr. Nahed " supervisor "
    In Medcoplast Co. factory in Egypt founded in the late 1960s that started by only producing simple plastic droppers, nowadays Medcoplast Co. have twelve identical all electrical hot-runner plastic injection molding machines for production of plastic preforms and packaging products with 25% of market share in Egypt and even market shares in northern African countries such as Algeria. The main production in facility is PET-Plastic Preforms. A high exchange & refurbishment time of molds (718 min) occur leading to a lower capacity of production, direct time & money losses, while Single Minute Exchange of Die (SMED) is considered a major lean manufacturing tool & one of the most used techniques to tackle mold exchange operation management & time reduction of them. In this project, Implementation of the basic steps of SMED technique separation of activities led exchange to be reduced by 34% (244 min reduction) including recommendations made regarding operators, inspection approach and material handling. In addition, aiming for standardization and visualization of operation, a quarterly update-able Stream Map has been developed presenting Mold exchange activities flow, assigned operator and cycle times, to facilitate operation on both supervision and operators as a present supporting tool and as guide for future operation improvements, estimating to accumulate at least an extra 7% to the reduction. Any reduction of mold exchange cycle time would directly translate into money & products saved ( ≈ 90,000 - 110,000 preforms for each hour ) as a result of exchange time reduction.