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An empirical investigation into the influence of sealing crimp geometry and process settings on the seal integrity of traditional and biopolymer packaging materials


Reference:

Matthews, J., Hicks, B., Mullineux, G., Leslie, J., Goodwin, J., Ogg, A. and Campbell, A., 2013. An empirical investigation into the influence of sealing crimp geometry and process settings on the seal integrity of traditional and biopolymer packaging materials. Packaging Technology and Science, 26 (6), pp. 355-371.

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    Official URL:

    http://dx.doi.org/10.1002/pts.1991

    Abstract

    This paper presents the results of investigations to determine how process settings and crimp geometry affect the seal strength and integrity of traditional polyolefin and biopolymer flexible packaging materials. The results show agreement with previous studies where temperature and dwell time are found to be the dominant factors for both polyolefin and biopolymer films. Pressure and crimp geometry are shown to be secondary factors in the process, up to the point of squeezing the film into molecular contact. In general it is shown that biopolymers exhibit similar sealing characteristics to more traditional films. In respect of the sealing crimp geometry it is shown that the crimp pitch has little or no effect on sealing integrity for films with gauges between 25µm and 40µm. But, for the same gauge material, crimp angles greater than 80° offer the greatest potential to gain higher seal strengths. It is further shown that with the cellulose and PLA films tested, a higher seal strength can be produced with crimp pitches of 2mm and lower. Also presented are some more general implications for guiding the selection of sealing crimp geometry and their usage with biopolymers.

    Details

    Item Type Articles
    CreatorsMatthews, J., Hicks, B., Mullineux, G., Leslie, J., Goodwin, J., Ogg, A. and Campbell, A.
    DOI10.1002/pts.1991
    DepartmentsFaculty of Engineering & Design > Mechanical Engineering
    Publisher StatementMatthews_PTaS_2012.pdf: This is the pre-peer reviewed version of the following article: This is the pre-peer reviewed version of the following article: Matthews, J, Hicks, B, Mullineux, G, Leslie, J, Goodwin, J, Ogg, A & Campbell, A 2013, 'An empirical investigation into the influence of sealing crimp geometry and process settings on the seal integrity of traditional and biopolymer packaging materials' Packaging Technology and Science, vol 26, no. 6, pp. 355-371, which has been published in final form at, which has been published in final form at http://dx.doi.org/10.1002/pts.1991
    RefereedYes
    StatusPublished
    ID Code31010

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