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Erik Wallenberg (1915–1999) was a Swedish engineer. He is credited for inventing the Tetra Pak tetrahedron packaging in 1944. ==Career== Wallenberg had initially planned to join the Army as an officer, but fell ill during military training and had to abandon his plans. He was accepted at Karolinska Institutet medical school in Stockholm, but decided to move to Lund and try to enter the medical school at Lund University instead.〔Andersson, Peter and Larsson, Tommy, ''Tetra. Historien om dynastin Rausing'', Stockholm: Norstedts 1998 (ISBN 91-7263-014-0), p. 13〕 In 1943, waiting to get accepted at Lund University, Wallenberg got a job as lab assistant at Åkerlund & Rausing, a local firm manufacturing food packaging. When his manager got drafted in 1944, he became head of the research lab, aged 28. The team had orders from the company owner Ruben Rausing to produce a viable packaging for milk that was cheap enough to compete with the current milk distribution system, based on loose milk sold in reusable glass bottles. The key to this was to use as little packaging material as possible. The research lab had tried and failed a number of different solutions. Finally, reportedly when ill with fever, Wallenberg got the idea of using one single sheet of paper rolled into a cylinder and folded from two different sides, creating a mathematical tetrahedron.〔Andersson, Peter and Larsson, Tommy, ''Tetra. Historien om dynastin Rausing'', Stockholm: Norstedts 1998 (ISBN 91-7263-014-0), p. 18〕 The volume created only needed to be sealed in three places and the packages could be produced in one subsequent sequence from one roll of paper, using a minimum of material, with a minimum of waste.〔(Tetra Pak (Swedish) ) Tekniska Museet, retrieved 6 December 2011〕 After some initial hesitation, Ruben Rausing became convinced that the invention was a good idea and ordered the project to be developed.〔Leander, Lars, ''Tetra Pak. A Vision Becomes Reality. A company history with a difference'', Lund: Tetra Pak International 1996 (ISBN 91-630-4789-6), p. 27f〕 In March 1944 he filed for a patent, and in 1951 Tetra Pak was created as a subsidiary to Åkerlund & Rausing. The tetrahedron package made Tetra Pak one of the world's most successful companies. The package is still sold today under the name of Tetra Classic Aseptic. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Erik Wallenberg」の詳細全文を読む スポンサード リンク
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