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  • 1. Axelsson, Frida
    et al.
    Ölmén, Henrik
    Effektivisering och förbättring av produktionslinje2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The thesis is done at Kvibille dairy and includes the design of a packing line for blue cheese.

    Today ́s line has a maximum production capacity of two tons per day, based on the fact that there are three employees at the line. The production includes three separateflavors to be packaged. The line has a high degree of manual labor and is considereddifficult to handle and not very ergonomic according to the staff on the production line. The goal for this thesis is to improve the ergonomic aspects of the line and if possible reduce the need for personnel without adventuring the production capacity.

    To find what improvements can be made on the line, a preliminary and background study was made. These studies include interviews, observations in the form of a Rapid Plant Assessment, time measurements and simulations. The study showed that the personnel felt some stress during the line and that the flow stops at several stations which impede the flow. The advantage is that the line is flexible and all the stationsin the line are oriented in the right order.

    After all the facts were collected and it was determined what was needed for the line, the search for suppliers began. What was needed was an adjustable table and fatigue mats to improve working conditions. Automation was also investigated to minimize the stress on the staff. The automation idea was later replaced with manually controlled aids and semi-automatic machines because it was considered more cost effective. To streamline the line, automatic scales with label applicators wereinvestigated and alternative packaging methods. These methods involved replacing the material on the foil so that the need for plastic wrapping is eliminated.

    The result was to replace the tables for height adjustable workbenches and introduce a vacuum lift to improve ergonomics on the line. The aluminum foil is replaced by a more durable wax laminated foil called DanaPhane with an integrated name label in the foil, eliminating the need for plastic foil and separate labels. Because the need for these is eliminated, environmental impact is minimized in terms of material utilization and transports. The elimination also means fewer operations, which reduces the need for additional staff. To further streamline the production, an automated scale and weight labeling for each cheese was introduced.

  • 2. Hansen, Hansen
    et al.
    Ölmén, Henrik
    Equipment changeover reduction of a production line2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The growing competition for manufacturing companies is placing increased demand on fulfilling customer requirements with as high quality as possible as quick as possible. To meet the tougher competition, it is common that companies implement various tools and methods such as Lean Manufacturing, Continuous Improvement and Single Minute Exchange of Dies (SMED). Implementing these helps to reduce the risk of production failures while increasing efficiency thus increasing profit.  This thesis brings up the implementation of a tool within Lean Manufacturing called SMED to a production line with the aim to increase the machine availability through reduction of the equipment changeover.  The thesis is a qualitative case study where the authors use interviews, observation and time measurement to gather relevant data which are then analysed for the goal of this thesis which is to reduce the complete equipment changeover time of the production line in Ämnesverkstaden. All the relevant data which was collected resulted in an implementation of a SMED mind-set and an instruction manual with a complementary list of necessary changes.  The authors believe that this study can provide useful information and knowledge when introducing SMED as well as an approach the operators can use in the future to help reduce the equipment changeover.

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