+49 441 94986-0

Examinationmethods



Heavy metals / metals
Elements according to the Packaging Directive 94/62 / EC (lead, cadmium, total chromium, mercury), EDQM Publication: Metals and alloys in food contact materials or metals in accordance with Annex II to Regulation (EU) No 10/2011





Damage analysis/examination of complaints
In many cases, it is not immediately obvious which kind of tests are necessary and reasonable for clarification. Furthermore, test results which are available in short time are often helpful for further decisions. Our “diagnostic concept” provides the agreement of a limited budget (normally 700,- up to 1.000,- Euro) for the screening and evaluation of information already available as well as the realisation and assessment of first tests according to an agreed schedule. The result is a more detailed view of the damage, possible solutions and indications for additional and reasonable investigations and researches are given. You will receive first reliable test results and an appropriate documentation of the current situation at short notice and at a fixed price. Information on the frequency of damage, time of detection, technical information such as material structure or test results already known are helpful for a successful processing as experience has shown. If available, please send us reference samples, data sheets, specifications.





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).





Microtome section/ cross-sectional image
Cross section of films, moulded forms, sealed seams etc., thickness determination of visible layers included,with reflected or transmitted light microscope (accredited test method).





Haze/transparency
Method for quantification of the optical properties of transparent or translucent materials (not coulored opaque or metallized). The test method describes the hazing of a film caused by light scattering. A low haze value characterizes a low turbidity equivalent to a good visibility of details of filling goods or labels lying behind or under the film. By increasing the haze value, the "frosted glass effect" increases, i.e. details such as labels are ultimately only recognisable when in direct contact with the film surface. ASTM D 1003 = calibration without compensation port, DIN ISO 13468 = calibration with compensation port. The measured values differ slightly, but the measurements are basically carried out according to the same principle.





Oxygen transmission rate (OTR) of plastic films, laminates, coated papers, Alufoils, etc.
Coulombmetric (oxygen specific) carrier gas method Method (Ametek/ Mocon). Usually deviating from the standard as a double determination



News & blog

26Apr2024 Die geheimnisvolle Reise einer  Schwarzwälder Kirschtorte

Und was das mit Lebensmittelverpackungen und Flexpack zu tun hat. Es war einmal eine Schwarzwälder Kirschtorte, die aus mehreren kunstvoll geschichteten Schichten bestand. Jede Schicht erzählte ihre eigene Geschichte: Der dunkle Biskuitboden flüsterte von schokoladigen Abenteuern, die...

24Apr2024 So fördern zunächst ungeliebte EU-Richtlinien Innovatione

Hallo, ich bin der neue Easy Opening Verschluss - dein Held auf dem Getränkekarton! Daran hat die EU nicht gedacht, als sie mir vorschrieb, auf der Verpackung zu leben. Bleib an meiner Seite, ich zeige dir die Welt der Getränke neu! Hey, ich bin's, der brandneue Verschluss, der nie von deiner...

Show all news



Events

Show all events