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Information about tests

Sealing and welding properties of films, verification and comparison by laboratory sealing press

Production of sealing or welding seams on our laboratory sealing press (Kopp) and testing of the sealing seams with the Zwick tensile testing machine. The seals are made using previously agreed parameters. To create sealing curves individual parameters are varied, e.g. for determining the dependence of the sealing properties on the sealing temperature Ts [° C]. Of course, sealing curves can also determined depending on sealing pressure ps [N/cm] or sealing time ts [s]. Typically, a parameter is varied over 5 equal levels and the results are plotted graphically as a function of the variables (accredited test).

test method:Mechanical/ technological properties
Norms: ASTM F 88/ F 88M (2015)
DIN EN 868-5- D (2019-03)
DIN EN ISO 527-3 (2019-02)
DIN 55529 (2012-09)
DIN EN ISO 527-1 (2019-12)
Needed sample size:approx. 1 m² or 15 DIN A 4 sheets, minimum sample width 100 mm, optimum: film samples over total material width, e.g. approx. 2 linear metres with 0.5 m film width

Standardprüfungen

sealing curve, variation of sealing pressure
Preparing of laboratory sealings by variation of the sealing pressure, sealing temperature and sealing time are held constantly. The seal strength is plotted as a function of the chosen parameter.


sealing graph (as a function of sealing time)
Preparing of laboratory sealings by variation of the sealing time, sealing pressure and sealing temperature are held constantly. The seal strength is plotted as a function of the chosen parameter.


sealing graph (as a function of temperature)
Preparing of laboratory sealing by variation of the sealing temperature, sealing pressure and sealing time are held constantly. The seal strength is plotted as a function of the chosen parameter.


sealing test with fixed parameter setting
One seal sample with fixed parameter setting for sealing pressure, temperature and sealing time is prapared. The seal strength of the sample is determined. This test is useable for for checking fixed specification requirements.




back to overview Mechanical/ technological properties

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Your contact person

Matthias Böhne +49 441 94986-11
matthias.boehne@innoform.de

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