University of Twente Student Theses


Towards Greener Film Packs: Film pack redesign to enable battery replacement.

Brinck, Ivo ten (2013) Towards Greener Film Packs: Film pack redesign to enable battery replacement.

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Abstract:The Bachelor Assignment of Industrial design aims to give the student a first taste of the real world of technical design. The student is obliged to work on this assignment at the assigning company for at least three months. The bachelor assignment is a test of competence for the student. After completing the assignment it must be clear that the student has met the standard of education the University of Twente sets for their students. In this case the company is Impossible b.v. Impossible produces film packs for use in Polaroid camera’s. Currently the company is also working on new camera’s which will be able to use the same film packs. Though these film packs are very similar they do not contain a battery. Therefore, they are not suitable for the old Polaroid camera’s. Packs for Polaroid camera’s however are suitable for the new Impossible camera’s. The film packs Impossible produces consist out of eight photo frames, a dark slide which shields the photo frames from light, the photo frames, a spring, a battery and a pouch/cardstock (which holds the battery). A film pack is 90 mm wide, 111 mm long and has a height of16 mm. The battery still contains a lot of power after one film pack has been processed. Nevertheless many customers discard the film pack as a whole. The request posed by Impossible is to redesign the film pack in a way that the battery at the least will be removable. This would make it easier to recycle the battery. However this would be a significant environmental improvement over the current design. Impossible requested the battery to be interchangeable between film packs. To reach interchange ability the box, the pouch and the battery itself must be adjusted. In the current packs the battery is glued to a sheet of cardboard which is needed for the assembly. This is rather impractical if the battery has to be removable. Because of this the cardboard sheet must be changed to make it hold the battery during assembly and in the camera, but also be able to release the battery when the cartridge is empty. Obviously both the cardboard sheet and the box must be altered. In short: a hole must be made in the box in order to enable the battery to pass through. To find the optimal position, shape and size of this opening several drawings have been made. In consultation with the plant manager at Impossible Enschede a number of sketches were selected to be worked out in detail in 3D software. Besides that a number of physical modifications were made by changing the current boxes to make them appear like the conceptual designs as much as possible. Based on the data derived from these initial concepts further design iterations have been made in the 3D software and 3D-prints have been made to actually hold and feel the physical concepts. In order assure that the designs can actually be mass produced the most promising designs have been analyzed in Moldflow Adviser. This program helps to analyze the ability to produce an object through injection moulding. Using data from the injection moulding analysis, more adjustments have been made to the designs.
Item Type:Essay (Bachelor)
Faculty:ET: Engineering Technology
Subject:20 art studies
Programme:Industrial Design BSc (56955)
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